Polynucletides that control delta-6 desaturase genes and methods for identifying compounds for modulating delta-6 desaturase
First Claim
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1. An isolated polynucleotide segment, comprising a polynucleotide sequence which is selected from the group consisting of:
- (a) a sequence comprising SEQ ID NO;
1;
(b) a sequence comprising SEQ ID NO;
2;
(c) a sequence which is at least 80% homologous with a sequence of any of (a) to (b);
(d) a sequence which is at least 90% homologous with a sequence of any of (a) to (b);
(e) a sequence which is at least 95% homologous with a sequence of any of (a) to (b);
(f) a sequence which is at least 98% homologous with a sequence of any of (a) to (b);
(g) a sequence which is at least 99% homologous with a sequence of any of (a) to (b); and
;
(h) a sequence which hybridizes to any of (a) to (g) under stringent conditions.
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Abstract
The present invention relates to polynucleotides that control desaturase genes and to drug screening assays for identifying pharmaceutially active compounds for use in the treatment of diseases involving abnormal lipid metabolism including diabetic neuropathy, by utilizing fatty acid desaturase enzymes and the genes which encode them as targets for intervention. The drug screening method identifies nucleotides, proteins, compounds and/or other pharmacological agents, which effectively modulate the activity of desaturase enzymes or regulate the level of expression of the desaturase genes.
52 Citations
76 Claims
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1. An isolated polynucleotide segment, comprising a polynucleotide sequence which is selected from the group consisting of:
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(a) a sequence comprising SEQ ID NO;
1;
(b) a sequence comprising SEQ ID NO;
2;
(c) a sequence which is at least 80% homologous with a sequence of any of (a) to (b);
(d) a sequence which is at least 90% homologous with a sequence of any of (a) to (b);
(e) a sequence which is at least 95% homologous with a sequence of any of (a) to (b);
(f) a sequence which is at least 98% homologous with a sequence of any of (a) to (b);
(g) a sequence which is at least 99% homologous with a sequence of any of (a) to (b); and
;
(h) a sequence which hybridizes to any of (a) to (g) under stringent conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 28, 29, 30, 31, 32, 46, 47, 48, 49, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76)
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25. A method for identifying a compound which inhibits or promotes the activity of a polynucleotide, wherein the polynucleotide encodes a mammalian delta-6-desaturase, comprising the steps of:
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(a) selecting a control animal having said polynucleotide and a test animal having said polynucleotide;
(b) treating said test animal using a compound; and
,(c) determining the relative quantity of an expression product of said polynucleotide, as between said control animal and said test animal. - View Dependent Claims (26, 27, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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- 50. A method for diagnosing the presence of or a predisposition for a lipid metabolic disorder in a subject, comprising comparing the polypeptide sequence of a control region of delta-6desaturase from a tissue sample from said subject with the sequence of a wild-type of said delta-6-desaturase, wherein an alteration in the sequence of said subject as compared to said wild-type indicates the presence of or a predisposition to said lipid metabolic disorder.
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54. A method for identifying a compound which inhibits or promotes the activity of control regions of mammalian delta-6- and/or delta-5-desaturases, comprising the steps of:
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(a) selecting one or more host cells comprising said polynucleotides, wherein such host cells are heterogeneous to said polynucleotides;
(b) cloning said host cells and separating said clones into a test group and a control group;
(c) treating said test group using a compound; and
(d) determining the relative quantities of expression products of operably linked polynucleotides to said control regions, as between said test group and said control group. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61)
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Specification