5 genotype C = Family Cohesion from the FES *** ^1 STEP 4. The fourth step is to identify one or more polymoφhisms associated with each gene. These can be single base pair restriction fragment length polymoφhisms (RFLPs), or dinucleotide, trinucleotide, or other repeat polymoφhisms, such as well as variable tandem repeats, or any other marker of a gene locus. Such polymoφhisms and methods of detection may be readily available in previously published or unpublished bodies of work, as previously described above for identifying candidate genes, in addition to the polymoφhisms disclosed herein. Alternatively, if a gene is suspected of contributing to a polygenic trait of interest, but no polymoφhism is currently available for use in the MAA technique after a review of the literature and genetic databases, one may perform genetic assays to determine polymoφhisms in a gene that may be used in the MAA technique. Such assays are commonly used and described in the literature', in addition to the techniques described herein. Methods for genetic screening to accurately detect mutations in genomic DNA, cDNA or RNA samples may be employed, depending on the specific situation.
The present invention concerns the detection, diagnosis, prognosis and treatment of RDS diseases, and the detection, diagnosis, and prognosis of polygenic traits using the MAA technique. Markers of alleles that contribute additively or subtractively to a polygentic trait, in the form of nucleic acid sequences isolated from an individual, and methods of identifying and detecting new markers to be used in MAA assays, are disclosed.
These markers are indicators of a polygenic trait being assayed, and are diagnostic of the potential for an individual to exhibit a particular trait. Those skilled in the art will realize that the nucleic acid sequences disclosed herein, as well as those available through public databases, such as found at the National Center for Biotechnology Information, the published scientific literature, may be used in the MAN technique, and thus will find utility in a variety of applications in the detection, diagnosis, prognosis and treatment or RDS or other polygenic traits.
Examples of such applications within the scope of the present invention comprise amplification of one or more markers of a polygenic trait, using specific primers, detection of markers of a polygenic trait, such by hybridization with oligonucleotide or nucleic acid probes, incoφoration of isolated nucleic acids into vectors, and expression of RNA from the vectors. The requirement to test for multiple genes in behavioral disorders and other polygenic traits is feasible and requires no new technology. The polymoφhisms and variants involved are to two types, 1) single base pair changes producing restriction fragment length polymoφhisms (RFLPs), and 2) short tandem repeat polymoφhisms (STRs) [ especially di-and trinucleotide repeats]. The methods for large scale testing for these are different for each type.
Applied Biosystems, a division of Perkin-Elmer Coφoration, has developed a new technology and instrumentation that allows the rapid testing for PCR™ based single pair RFLP type genetic polymoφhisms. This instrument, Applied Biosystems Prism 7200 sequence Detection System (TaqMan) allows for multiple gene testing. This approach uses standard primers to electrophorese the section of DNA containing the restriction endonuclease polymoφhism site. The unique aspect of this technology is that two short oligmers are then designed, one exactly matching one of the alleles, the other matching the other allele. A fluorescent dye is attached to one end of each, and a quenching dye is attached to the other end. If the match is perfect, when the DNA polymerase reaches the hybridized oligmer, it is digested into nucleotides as the polymerase passes. This releasers the quencher and the dye now fluoresces maximally.
However, if the oligmer does not match, instead of the nuclease digestion, the oligomer is pushed off the site and the quenching persists. Dual wavelength reading of the plate allows distinction between 11,12,22 genotypes. The entire process of reading the results on 96 samples requires less than fifteen min and the results are fed into a computer for analysis and storage. This technology, aided by a computerized workstation to set up to PCR™ reactions, allows hundreds of different RFLPs to be examined in one day.
The same computerized workstation used above is used to set up the PCR™ reactions for the STRs. The difference is that for the STRs the primers themselves are labeled with different fluorescent dyes.
The accuracy necessary to identify alleles differing by only two bp is obtained from the Applied Biosystems 373 DNA sequencer which allows the sample labeled with a second dye. Each is detected by laser scanning at a different wavelength. For example, one PCR™ primer is labeled with fluorescent HEX Amidite (Applied Biosystems, Foster City, CA) or other fluorescent dye.
Two μl of the 10 fold diluted PCR™ product is then added to 2.5 μl deionized formamide and 0.5 μl of ROX 500 standard, denatured for 2 min at 92 C and loaded on 6% denaturing polyacrylamide gel in an AB 373 DNA sequencer. The gel is electrophoresed for 5 h at a constant 25W.
The gel is laser scanned and analyzed using the internal ROX 500 standards present in each lane. The peaks are recognized by Genotyper( version 1.1) based on the color fragments sized by base pair length. Historically, a number of different methods have been used to detect point mutations, including denaturing gradient gel electrophoresis ('DGGE'), restriction enzyme polymoφhism analysis, chemical and enzymatic cleavage methods, and others. The more common procedures currently in use include direct sequencing of target regions amplified by PCR™ (see below) and single-strand conformation polymoφhism analysis ('SSCP'). Another method of screening for point mutations is based on RNase cleavage of base pair mismatches in RNA DNA and RNA/RNA heteroduplexes. As used herein, the term 'mismatch' is defined as a region of one or more unpaired or mispaired nucleotides in a double-stranded RNA/RNA, RNA/DNA or DNA/DNA molecule.
This definition thus includes mismatches due to insertion deletion mutations, as well as single and multiple base point mutations. 4,946,773 describes an RNase A mismatch cleavage assay that involves annealing single-stranded DNA or RNA test samples to an RNA probe, and subsequent treatment of the nucleic acid duplexes with RNase A. After the RNase cleavage reaction, the RNase is inactivated by proteolytic digestion and organic extraction, and the cleavage products are denatured by heating and analyzed by electrophoresis on denaturing polyacrylamide gels. For the detection of mismatches, the single-stranded products of the RNase A treatment, electrophoretically separated according to size, are compared to similarly treated control duplexes. Samples containing smaller fragments (cleavage products) not seen in the control duplex are scored as positive. Currently available RNase mismatch cleavage assays, including those performed according to U.S. 4,946,773, require the use of radiolabeled RNA probes.
Myers and Maniatis in U.S. 4,946,773 describe the detection of base pair mismatches using RNase A.
Other investigators have described the use of an E. Coli enzyme, RNase I, in mismatch assays. Because it has broader cleavage specificity than RNase A, RNase I would be a desirable enzyme to employ in the detection of base pair mismatches if components can be found to decrease the extent of non-specific cleavage and increase the frequency of cleavage of mismatches.
The use of RNase I for mismatch detection is described in literature from Promega Biotech. Promega markets a kit containing RNase I that is shown in their literature to cleave three out of four known mismatches, provided the enzyme level is sufficiently high. The RNase protection assay was first used to detect and map the ends of specific mRNA targets in solution. The assay relies on being able to easily generate high specific activity radiolabeled RNA probes complementary to the mRNA of interest by in vitro transcription. Originally, the templates for in vitro transcription were recombinant plasmids containing bacteriophage promoters.
The probes are mixed with total cellular RNA samples to permit hybridization to their complementary targets, then the mixture is treated with RNase to degrade excess unhybridized probe. Also, as originally intended, the RNase used is specific for single-stranded RNA, so that hybridized double-stranded probe is protected from degradation. After inactivation and removal of the RNase, the protected probe (which is proportional in amount to the amount of target mRNA that was present) is recovered and analyzed on a polyacrylamide gel. The RNase Protection assay was adapted for detection of single base mutations. In this type of RNase A mismatch cleavage assay, radiolabeled RNA probes transcribed in vitro from wild-type sequences, are hybridized to complementary target regions derived from test samples. The test target generally comprises DNA (either genomic DNA or DNA amplified by cloning in plasmids or by PCR™), although RNA targets (endogenous mRNA) have occasionally been used.
If single nucleotide (or greater) sequence differences occur between the hybridized probe and target, the resulting disruption in Watson-Crick hydrogen bonding at that position ('mismatch') can be recognized and cleaved in some cases by single-strand specific ribonuclease. To date, RNase A has been used almost exclusively for cleavage of single-base mismatches, although RNase I has recently been shown as useful also for mismatch cleavage. There are recent descriptions of using the MutS protein and other DNA-repair enzymes for detection of single-base mismatches.
Additional methods for detection of nucleic acids, and mutations are described herein. Nucleic Acids As described herein, an aspect of the present disclosure is 29 previously known genes whose allelic polymoφhisms are markers of polygenic traits, including markers for such polygenic traits as ADHD, oppositional defiant disorder, conduct disorder, learning disorders, alcohol, cholesterol, and LDL. In one embodiment, the nucleic acid sequences disclosed herein will find utility as hybridization probes or amplification primers. These nucleic acids may be used, for example, in diagnostic evaluation of tissue samples or employed to clone full length cDNAs or genomic clones corresponding thereto.
In certain embodiments, these probes and primers consist of oligonucleotide fragments. Such fragments should be of sufficient length to provide specific hybridization to a RNA or DNA tissue sample. The sequences typically will be 10-20 nucleotides, but may be longer. Longer sequences, e.g., 40, 50, 100, 500 and even up to full length, are preferred for certain embodiments. Nucleic acid molecules having contiguous stretches of about 10, 15, 17, 20, 30, 40, 50, 60, 75 or 100 or 500 nucleotides from a sequence selected from any gene that may be used in the diagnostic or treatment methods disclosed herein are contemplated.
Molecules that are complementary to the above mentioned sequences and that bind to these sequences under high stringency conditions also are contemplated. These probes will be useful in a variety of hybridization embodiments, such as Southern and Northern blotting.
In some cases, it is contemplated that probes may be used that hybridize to multiple target sequences without compromising their ability to effectively diagnose a polygenic trait. Various probes and primers can be designed around the disclosed nucleotide sequences, or the sequences surrounding a polymoφhism useful as a marker, be it a gene disclosed herein or a gene latter added the set of 29 genes described herein. It is contemplated that other genes may be used to create new sets for examination of different polygenic traits, and the use of any other genes, or preferably gene polymoφhisms, in the MAA technique is encompassed as part of the invention. Primers may be of any length but, typically, are 10-20 bases in length.
By assigning numeric values to a sequence, for example, the first residue is 1, the second residue is 2, etc., an algorithm defining all primers can be proposed: n to n + y where n is an integer from 1 to the last number of the sequence and y is the length of the primer minus one (9 to 19), where n + y does not exceed the last number ofthe sequence. Thus, for a 10-mer, the probes correspond to bases 1 to 10, 2 to 11, 3 to 12. For a 15-mer, the probes correspond to bases 1 to 15, 2 to 16, 3 to 17. For a 20-mer, the probes correspond to bases 1 to 20, 2 to 21, 3 to 22.
In certain embodiments, it is contemplated that multiple probes may be used for hybridization to a single sample. The use of a hybridization probe of between 14 and 100 nucleotides in length allows the formation of a duplex molecule that is both stable and selective. Molecules having complementary sequences over stretches greater than 20 bases in length are generally preferred, in order to increase stability and selectivity ofthe hybrid, and thereby improve the quality and degree of particular hybrid molecules obtained. One will generally prefer to design nucleic acid molecules having stretches of 20 to 30 nucleotides, or even longer where desired. Such fragments may be readily prepared by, for example, directly synthesizing the fragment by chemical means or by introducing selected sequences into recombinant vectors for recombinant production.
Accordingly, the nucleotide sequences of the invention may be used for their ability to selectively form duplex molecules with complementary stretches of genes or RNAs or to provide primers for amplification of DNA or RNA from tissues. Depending on the application envisioned, one will desire to employ varying conditions of hybridization to achieve varying degrees of selectivity of probe towards target sequence. For applications requiring high selectivity, one will typically desire to employ relatively stringent conditions to form the hybrids, e.g., one will select relatively low salt and/or high temperature conditions, such as provided by about 0.02 M to about 0.10 M NaCl at temperatures of about 50°C to about 70°C. Such high stringency conditions tolerate little, if any, mismatch between the probe and the template or target strand, and would be particularly suitable for isolating specific genes or detecting specific mRNA transcripts. It is generally appreciated that conditions can be rendered more stringent by the addition of increasing amounts of formamide. For certain applications, for example, substitution of amino acids by site- directed mutagenesis, it is appreciated that lower stringency conditions are required.
Under these conditions, hybridization may occur even though the sequences of probe and target strand are not perfectly complementary, but are mismatched at one or more positions. Conditions may be rendered less stringent by increasing salt concentration and decreasing temperature. For example, a medium stringency condition could be provided by about 0.1 to 0.25 M NaCl at temperatures of about 37°C to about 55°C, while a low stringency condition could be provided by about 0.15 M to about 0.9 M salt, at temperatures ranging from about 20°C to about 55°C. Thus, hybridization conditions can be readily manipulated, and thus will generally be a method of choice depending on the desired results. In other embodiments, hybridization may be achieved under conditions of, for example, 50 mM Tris-HCl (pH 8.3), 75 mM KCl, 3 mM MgCl 2, 10 mM dithiothreitol, at temperatures between approximately 20°C to about 37°C. Other hybridization conditions utilized could include approximately 10 mM Tris-HCl (pH 8.3), 50 mM KCl, 1.5 μM MgCl 2, at temperatures ranging from approximately 40°C to about 72°C. In certain embodiments, it will be advantageous to employ nucleic acid sequences of the present invention in combination with an appropriate means, such as a label, for determining hybridization.
N wide variety of appropriate indicator means are known in the art, including fluorescent, radioactive, enzymatic or other ligands, such as avidin/biotin, which are capable of being detected. In preferred embodiments, one may desire to employ a fluorescent label or an enzyme tag such as urease, alkaline phosphatase or peroxidase, instead of radioactive or other environmentally undesirable reagents. In the case of enzyme tags, colorimetric indicator substrates are known which can be employed to provide a detection means visible to the human eye or spectrophotometrically, to identify specific hybridization with complementary nucleic acid-containing samples. In general, it is envisioned that the hybridization probes described herein will be useful both as reagents in solution hybridization, as in PCR™, for detection of expression of corresponding genes, as well as in embodiments employing a solid phase.
In embodiments involving a solid phase, the test DΝA (or RΝA) is adsorbed or otherwise affixed to a selected matrix or surface. This fixed, single-stranded nucleic acid is then subjected to hybridization with selected probes under desired conditions. The selected conditions will depend on the particular circumstances based on the particular criteria required (depending, for example, on the G+C content, type of target nucleic acid, source of nucleic acid, size of hybridization probe, etc.). Following washing of the hybridized surface to remove non-specifically bound probe molecules, hybridization is detected, or even quantified, by means ofthe label. Amplification and PCR™.
Nucleic acid used as a template for amplification is isolated from cells contained in the biological sample, according to standard methodologies (Sambrook et al, 1989). The nucleic acid may be genomic DNA or fractionated or whole cell RNA.
Where RNA is used, it may be desired to convert the RNA to a complementary DNA. In one embodiment, the RNA is whole cell RNA and is used directly as the template for amplification.
Pairs of primers that selectively hybridize to nucleic acids corresponding to genes of a polygenic trait are contacted with the isolated nucleic acid under conditions that permit selective hybridization. The term 'primer', as defined herein, is meant to encompass any nucleic acid that is capable of priming the synthesis of a nascent nucleic acid in a template-dependent process. Typically, primers are oligonucleotides from ten to twenty or thirty base pairs in length, but longer sequences can be employed. Primers may be provided in double-stranded or single-stranded form, although the single-stranded form is preferred.
Once hybridized, the nucleic acid:primer complex is contacted with one or more enzymes that facilitate template-dependent nucleic acid synthesis. Multiple rounds of amplification, also referred to as 'cycles,' are conducted until a sufficient amount of amplification product is produced.
Next, the amplification product is detected. In certain applications, the detection may be performed by visual means.
Alternatively, the detection may involve indirect identification of the product via chemiluminescence, radioactive scintigraphy of incoφorated radiolabel or fluorescent label or even via a system using electrical or thermal impulse signals (Affymax technology). A number of template dependent processes are available to amplify the marker sequences present in a given template sample. One of the best known amplification methods is the polymerase chain reaction (referred to as PCR™) which is described in detail in U.S. 4,683,195, 4,683,202 and 4.800,159, each incoφorated herein by reference in entirety. Briefly, in PCR™, two primer sequences are prepared that are complementary to regions on opposite complementary strands of the marker sequence.
An excess of deoxynucleoside triphosphates are added to a reaction mixture along with a DNA polymerase, e.g., Taq polymerase. If the marker sequence is present in a sample, the primers will bind to the marker and the polymerase will cause the primers to be extended along the marker sequence by adding on nucleotides. By raising and lowering the temperature of the reaction mixture, the extended primers will dissociate from the marker to form reaction products, excess primers will bind to the marker and to the reaction products and the process is repeated. A reverse transcriptase PCR™ amplification procedure may be performed in order to quantify the amount of mRNA amplified. Methods of reverse transcribing RNA into cDN A are well known and described in Sambrook et al, 1989. Alternative methods for reverse transcription utilize thermostable, RNA-dependent DNA polymerases.
These methods are described in WO 90/07641, filed December 21, 1990, incoφorated herein by reference. Polymerase chain reaction methodologies are well known in the art.
Gharana Mogudu Hd Mp4 Video Songs Free Download here. Another method for amplification is the ligase chain reaction ('LCR'), disclosed in EPA No. 320 308, incoφorated herein by reference in its entirety. In LCR, two complementary probe pairs are prepared, and in the presence of the target sequence, each pair will bind to opposite complementary strands of the target such that they abut. In the presence of a ligase, the two probe pairs will link to form a single unit. By temperature cycling, as in PCR™, bound ligated units dissociate from the target and then serve as 'target sequences' for ligation of excess probe pairs. Patent 4,883,750 describes a method similar to LCR for binding probe pairs to a target sequence. Qbeta Replicase, described in PCT Application No.
PCT/US87/00880, incoφorated herein by reference, may also be used as still another amplification method in the present invention. In this method, a replicative sequence of RNA that has a region complementary to that of a target is added to a sample in the presence of an RNA polymerase. The polymerase will copy the replicative sequence that can then be detected. An isothermal amplification method, in which restriction endonucleases and ligases are used to achieve the amplification of target molecules that contain nucleotide 5'-[alpha-thio]-triphosphates in one strand of a restriction site may also be useful in the amplification of nucleic acids in the present invention.
Strand Displacement Amplification (SDA) is another method of carrying out isothermal amplification of nucleic acids which involves multiple rounds of strand displacement and synthesis, i.e. Nick translation. A similar method, called Repair Chain Reaction (RCR), involves annealing several probes throughout a region targeted for amplification, followed by a repair reaction in which only two of the four bases are present. The other two bases can be added as biotinylated derivatives for easy detection. A similar approach is used in SDA.
Target specific sequences can also be detected using a cyclic probe reaction (CPR). In CPR, a probe having 3' and 5' sequences of non-specific DNA and a middle sequence of specific RNA is hybridized to DNA that is present in a sample. Upon hybridization, the reaction is treated with RNase H, and the products of the probe identified as distinctive products that are released after digestion.
The original template is annealed to another cycling probe and the reaction is repeated. Still another amplification methods described in GB Application No. 2 202 328, and in PCT Application No. PCT/US89/01025, each of which is incoφorated herein by reference in its entirety, may be used in accordance with the present invention.
In the former application, 'modified' primers are used in a PCR™-like, template- and enzyme-dependent synthesis. The primers may be modified by labeling with a capture moiety (e.g., biotin) and/or a detector moiety (e.g., enzyme). In the latter application, an excess of labeled probes are added to a sample. In the presence of the target sequence, the probe binds and is cleaved catalytically. After cleavage, the target sequence is released intact to be bound by excess probe. Cleavage of the labeled probe signals the presence ofthe target sequence.
Other nucleic acid amplification procedures include transcription-based amplification systems (TAS), including nucleic acid sequence based amplification (NASBA) and 3SR (Gingeras et al, PCT Application WO 88/10315, incoφorated herein by reference). In NASBA, the nucleic acids can be prepared for amplification by standard phenol/chloroform extraction, heat denaturation of a clinical sample, treatment with lysis buffer and minispin columns for isolation of DNA and RNA or guanidinium chloride extraction of RNA. These amplification techniques involve annealing a primer which has target specific sequences. Following polymerization, DNA/RNA hybrids are digested with RNase H while double stranded DNA molecules are heat denatured again. In either case the single stranded DNA is made fully double stranded by addition of second target specific primer, followed by polymerization.
The double-stranded DNA molecules are then multiply transcribed by an RNA polymerase such as T7 or SP6. In an isothermal cyclic reaction, the RNA's are reverse transcribed into single stranded DNA, which is then converted to double stranded DNA, and then transcribed once again with an RNA polymerase such as T7 or SP6. The resulting products, whether truncated or complete, indicate target specific sequences. Davey et al, EPA No. 329 822 (incoφorated herein by reference in its entirety) disclose a nucleic acid amplification process involving cyclically synthesizing single-stranded RNA ('ssRNA'), ssDNA, and double-stranded DNA (dsDNA), which may be used in accordance with the present invention. The ssRNA is a template for a first primer oligonucleotide, which is elongated by reverse transcriptase (RNA-dependent DNA polymerase). The RNA is then removed from the resulting DNA:RNA duplex by the action of ribonuclease H (RNase H, an RNase specific for RNA in duplex with either DNA or RNA).
The resultant ssDNA is a template for a second primer, which also includes the sequences of an RNA polymerase promoter (exemplified by T7 RNA polymerase) 5' to its homology to the template. This primer is then extended by DNA polymerase (exemplified by the large 'Klenow' fragment of E. Coli DNA polymerase I), resulting in a double-stranded DNA ('dsDNA') molecule, having a sequence identical to that of the original RNA between the primers and having additionally, at one end, a promoter sequence. This promoter sequence can be used by the appropriate RNA polymerase to make many RNA copies of the DNA. These copies can then re-enter the cycle leading to very swift amplification. With proper choice of enzymes, this amplification can be done isothermally without addition of enzymes at each cycle.
Because of the cyclical nature of this process, the starting sequence can be chosen to be in the form of either DNA or RNA. Miller et al, PCT Application WO 89/06700 (incoφorated herein by reference in its entirety) disclose a nucleic acid sequence amplification scheme based on the hybridization of a promoter/primer sequence to a target single-stranded DNA ('ssDNA') followed by transcription of many RNA copies of the sequence. This scheme is not cyclic, i.e. New templates are not produced from the resultant RNA transcripts. Other amplification methods include 'RACE' and 'one-sided PCR™' (Frohman, 1990, incoφorated herein by reference). Methods based on ligation of two (or more) oligonucleotides in the presence of nucleic acid having the sequence of the resulting 'di-oligonucleotide', thereby amplifying the di-oligonucleotide, may also be used in the amplification step of the present invention.
Following any amplification, it may be desirable to separate the amplification product from the template and the excess primer for the puφose of determining whether specific amplification has occurred. In one embodiment, amplification products are separated by agarose, agarose-acrylamide or polyacrylamide gel electrophoresis using standard methods (Sambrook et al, 1989). Alternatively, chromatographic techniques may be employed to effect separation. There are many kinds of chromatography which may be used in the present invention: adsoφtion, partition, ion-exchange and molecular sieve, and many specialized techniques for using them including column, paper, thin-layer and gas chromatography. Amplification products must be visualized in order to confirm amplification of the marker sequences. One typical visualization method involves staining of a gel with ethidium bromide and visualization under UV light.
Alternatively, if the amplification products are integrally labeled with radio- or fluorometrically-labeled nucleotides, the amplification products can then be exposed to x-ray film or visualized under the appropriate stimulating spectra, following separation. In one embodiment, visualization is achieved indirectly. Following separation of amplification products, a labeled, nucleic acid probe is brought into contact with the amplified marker sequence. The probe preferably is conjugated to a chromophore but may be radiolabeled. In another embodiment, the probe is conjugated to a binding partner, such as an antibody or biotin, and the other member of the binding pair carries a detectable moiety. In one embodiment, detection is by Southern blotting and hybridization with a labeled probe.
The techniques involved in Southern blotting are well known to those of skill in the art and can be found in many standard books on molecular protocols. See Sambrook et al, 1989. Briefly, amplification products are separated by gel electrophoresis. The gel is then contacted with a membrane, such as nitrocellulose, permitting transfer of the nucleic acid and non-covalent binding. Subsequently, the membrane is incubated with a chromophore-conjugated probe that is capable of hybridizing with a target amplification product.
Detection is by exposure of the membrane to x-ray film or ion-emitting detection devices. One example of the foregoing is described in U.S.
5,279,721, incoφorated by reference herein, which discloses an apparatus and method for the automated electrophoresis and transfer of nucleic acids. The apparatus permits electrophoresis and blotting without external manipulation of the gel and is ideally suited to carrying out methods according to the present invention. All the essential materials and reagents required for detecting gene markers of one or more polygenic traits in a biological sample may be assembled together in a kit. This generally will comprise preselected primers for specific markers. Also included may be enzymes suitable for amplifying nucleic acids including various polymerases (RT, Taq, etc.), deoxynucleotides and buffers to provide the necessary reaction mixture for amplification. Such kits generally will comprise, in suitable means, distinct containers for each individual reagent and enzyme as well as for each marker primer pair. Preferred pairs of primers for amplifying nucleic acids are selected to amplify the sequences specified in SEQ ID NO: l, SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:6, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO:10, SEQ ID NO:l l, SEQ ID NO:12, SEQ ID NO:13, SEQ ID NO:14, SEQ ID NO:15, SEQ ID NO: 16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO: 19, SEQ ID NO:20, SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO:23, SEQ ID NO:24, SEQ ID NO:25, SEQ ID NO:26, SEQ ID NO:27, SEQ ID NO:28.
SEQ ID NO:29. SEQ ID NO:30, SEQ ID NO:31, SEQ ID NO:32, SEQ ID NO:33 and SEQ ID NO:34. In another embodiment, such kits will comprise hybridization probes specific for genes involved in polygenic traits corresponding to the sequences specified in SEQ ID NO:l, SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5, SEQ ID NO:6, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO:10, SEQ ID NO:l 1, SEQ ID NO: 12, SEQ ID NO: 13, SEQ ID NO: 14, SEQ ID NO:15, SEQ ID NO:16, SEQ ID NO: 17, SEQ ID NO: 18, SEQ ID NO:19, SEQ ID NO:20. SEQ ID NO:21, SEQ ID NO:22, SEQ ID NO:23, SEQ ID NO:24, SEQ ID NO:25.
SEQ ID NO:26, SEQ ID NO:27, SEQ ID NO:28, SEQ ID NO:29, SEQ ID NO:30. SEQ ID NO:31, SEQ ID NO:32, SEQ ID NO:33 and SEQ ID NO:34. The inventors contemplate that any primers known to be effective to hybridize to an polymoφhic allele that is suspected of being diagnostic in the methods disclosed herein, particularly the MAN technique, may be used in such a kit. Such kits generally will comprise, in suitable means, distinct containers for each individual reagent and enzyme as well as for each marker hybridization probe.
DΝA segments encoding a specific gene may be introduced into recombinant host cells and employed for expressing a specific structural or regulatory protein. Alternatively, through the application of genetic engineering techniques, subportions or derivatives of selected genes may be employed.
Upstream regions containing regulatory regions such as promoter regions may be isolated and subsequently employed for expression ofthe selected gene. It will be understood that this invention is not limited to the particular probes disclosed herein and particularly is intended to encompass at least nucleic acid sequences that are hybridizable to the disclosed sequences or are functional sequence analogs of these sequences. For example, a partial sequence may be used to identify a structurally-related gene or the full length genomic or cDΝA clone from which it is derived. Those of skill in the art are well aware of the methods for generating cDΝA and genomic libraries which can be used as a target for the above-described probes (Sambrook et al, 1989). For applications in which the nucleic acid segments of the present invention are incoφorated into vectors, such as plasmids, cosmids or viruses, these segments may be combined with other DNA sequences, such as promoters, polyadenylation signals, restriction enzyme sites, multiple cloning sites, other coding segments, and the like, such that their overall length may vary considerably. It is contemplated that a nucleic acid fragment of almost any length may be employed, with the total length preferably being limited by the ease of preparation and use in the intended recombinant DNA protocol. Novel Methodology to Detect multiple Genes in one DNA Sample It is expected that since a number of genes and their polymoφhic loci would be required to diagnose RDS and related behaviors, the inventors propose a Multiple-Gene Screen (GENESCREEN™).
This could utilize novel DNA technology, such as the Gene Chip developed by Affymetrix. In summary, a glass chip is coated with light sensitive chemical compounds. Turnigy Trackstar 80A Turbo Manual.
These chemicals contain light-sensitive protecting groups that prevent the binding of DNA bases to the chip and to each other. When light is shone on the chemicals, however, the protecting groups are inactivated and a chemical coupling reaction can occur. Through the use of 'masks' that allow light to shine on certain regions of the Chip, but not others, DNA bases can be bound to selected areas of the Chip. Each new base that is added has a protecting group attached so that the process can be repeated to couple one base to another.
In this way, a large number of DNA probes of different sequences can be synthesized simultaneously on a single 1 /2-inch chip. It takes only 80 chemical steps to construct any set of up to 400,000 probes that are up to 20 DNA bases long. It is not possible to build as many probes with as many different DNA sequences in a reasonable timeframe utilizing conventional DNA synthesis machines.
These machines build probes in series rather than in the massively parallel manner employed by Affymetrix. In this rapid DNA analysis, sample DNA is first labeled with a fluorescent tag and then added to the probe array on the Chip. If the sample finds a complementary probe on the Chip, it will bind; if it does not find a complementary strand, it will wash off the Chip (segments of DNA that have complementary bases are said themselves to be complementary: the fragments ATTTGCGC (SEQ ID NO:l) will bind, for example to a complementary fragment with the sequence TNAACGCG (SEQ ID ΝO:2). The sequence and location of each probe is known, so the scanner can determine to which probe the sample has bound.
Because the sequence of the probe on the Chip is known, the sequence of the sample DNA is also known, since its sequence will be complementary. The use of gene chips does not require the copying of messenger RNA into cDNAs and can quantitatively detect 1 messenger rNAs and cDNAs.
However, for the analysis proposed in this present invention other methods which depend on DNA machines might be quite adequate for commercialization. For example, Genotying by mass spectrometry is contemplated. As an alternative to using DNA chip technology to genotype many genes at a time, Sequenom (San Diego, CA) has adopted matrix-assisted laser desoφtion/ionization-time-of-flight mass spectrometry (MALDI-TOF) for mass genotyping of single-base pair and short tandem repeat polymoφhisms (Little et al, 1997; Braun, Little, Kδster, 1997; Braun et al, 1997). This is accomplished by the following steps. First, PCR™ amplification of the region of the polymoφhism with biotin attached to one of the primers is conducted (Jurinke et al, 1997). Second, immobilization of the amplified DNA to strepavidin beads occurs (Jurinke et al, 1997) Third, hybridization of a primer adjacent to the polymoφhism site is done (Braun, Little, Kδster, 1997). Fourth, extension with DNA polymerase past the polymoφhic site in the presence of dNTPs and ddNTPs which are not present in the deoxyform form is done.
When suitably designed according to the sequence, this results in the addition of only a few additional bases (Braun, Little, Kδster, 1997). Fifth, the DNA is then processed to remove unused nucleotides and salts. Sixth, the short primer + polymoφhic site is removed by denaturation and transferred to silicon wafers using a piezoelectric pipette (O'Donnell et al, 1997). Seventh, the mass of the primer + polymoφhic site is then determined by delayed extraction MALDI-TOF mass spectrometry (Li et al, 1996; Tang et al, 1995).
Single base pair and tandem repeat variations in sequence are easily determined by their mass. This final step is very rapid, requiring only 5 sec per assay. All of these steps are robotically automated.
This technology has the potential of performing up to 20,000 genotypings per day. This technology is rapid, extremely accurate, and adaptable to any polymoφhism. It has a significant advantage over chip technology in that it is much more accurate, can identify both single base pair and short tandem repeat polymoφhisms, and adding or removing polymoφhisms to be tested can be done in a few sec at trivial cost. Polygene Kit(s)-GeneScreen Testing Kits In terms of the various genes proposed in this application the following Table 2 details the potential gene-disorder kit based on the GENECHIP™ concept. A component of this embodiment is to first genotype the patient and then based on his/her genotype provide the appropriate cocktail. In terms of the D2 anomaly the inventors have developed an appropriate cocktail which is described herein. Table 5 summarizes the uses of compositions of the present invention as improved with specific genotypes.
Tables 6-16 list the preferred components of these compositions that are useful for the treatment of various disorders. Also, see Tables 17-19 for a brief schematic of how certain elements effect reward induced by stimulants (cocaine, etc.), opiates and sedative-hypnotics. TABLE 5 Polygenic Diagnosis and Anti-Craving Compositions: Targeted Prevention and Treatment Selected Composition of RDS Behavior (Targeted Gene (SI)/Alleles Treatment Treated Effect of Treatment Study Type Associated for Improved Response Alcotrol™ Substance Use Disorder Anti-craving, reduced anxiety, DBPC- DI (Increased frequency of Dde — special emphasis on reduced-relapse, reduced against Inpatient homozygosity of the Al allele) sedative-hypnotic abuse medical advice rates (AMA), D 2 (Taq Al, BI, exon ' haplotypes, (i.e. Alcohol, opiates, improved physical and BESS Cl) barbiturates) scores DBPC- DATl VNTR (10/10) Outpatient CNRl (homozygosity VNTR for. Selected Composition of RDS Behavior (Targeted Gene (SI)7AlleIes Treatment Treated Effect of Treatment Study Type Associated for Improved Response DBH - Taql Bl allele Alcotrol™ 2 COMT - 108 Valine allele Continued TDO2 - intron 6 (G→A) and/or (G→T) D 4 VNTR 2 or 7 o Cocotrol™ Substance Use Disorder Same as for Alcotrol™ plus DBPC- D 2 Taql Al, BI, Cl or exon ID — special emphasis on reduction of cocaine dreams.