CA2452716A1 - Mammalian sweet and amino acid heterodimeric taste receptors - Google Patents

Mammalian sweet and amino acid heterodimeric taste receptors Download PDF

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Publication number
CA2452716A1
CA2452716A1 CA002452716A CA2452716A CA2452716A1 CA 2452716 A1 CA2452716 A1 CA 2452716A1 CA 002452716 A CA002452716 A CA 002452716A CA 2452716 A CA2452716 A CA 2452716A CA 2452716 A1 CA2452716 A1 CA 2452716A1
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Canada
Prior art keywords
polypeptide
receptor
nucleotide sequence
seq
amino acid
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CA002452716A
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French (fr)
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CA2452716C (en
Inventor
Charles S. Zuker
Nicholas J. P. Ryba
Jayaram Chandrashekar
Mark A. Hoon
Gregory A. Nelson
Yifeng Zhang
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US Department of Health and Human Services
University of California
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Individual
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Priority claimed from US09/927,315 external-priority patent/US7402400B2/en
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Publication of CA2452716C publication Critical patent/CA2452716C/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
    • G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
    • G01N33/5076—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics involving cell organelles, e.g. Golgi complex, endoplasmic reticulum
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/705—Receptors; Cell surface antigens; Cell surface determinants

Abstract

The present invention provides isolated nucleic acid and amino acid sequence s of sweet or amino acid taste receptors comprising two heterologous G-protein coupled receptor polypeptides from the T1R family of sensory G-protein coupl ed receptors, antibodies to such receptors, methods of detecting such nucleic acids and receptors, and methods of screening for modulators of sweet and amino acid taste receptors.

Claims (81)

1. An isolated taste receptor comprising a T1R3 polypeptide, wherein the T1R3 polypeptide is encoded by a nucleotide sequence that hybridizes under moderately stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:15, 20, 23, 25, or 30.
2. The isolated receptor of claim 1, wherein the T1R3 polypeptide is encoded by a nucleotide sequence that hybridizes under highly stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID
NO:15, 20, 23, 25, or 30.
3. The isolated receptor of claim 1, wherein the T1R3 polypeptide has an amino acid sequence of SEQ ID NO:15, 20, 23, 25, or 30.
4. The isolated receptor of claim 1, wherein the T1R3 polypeptide is encoded by a nucleotide sequence of SEQ ID NO:14, 19, 22, 24, or 29.
5. The isolated receptor of claim 1, wherein the T1R3 polypeptide is recombinant.
6. A host cell comprising the isolated receptor of claim 5.
7. The isolated receptor of claim 1, wherein the receptor comprises a T1R3 polypeptide and a heterologous polypeptide.
8. The isolated receptor of claim 7, wherein the T1R3 polypeptide and the heterologous polypeptide are non-covalently linked.
9. The isolated receptor of claim 7, wherein the T1R3 polypeptide and the heterologous polypeptide are covalently linked.
10. The isolated receptor of claim 7, wherein the T1R3 polypeptide and the heterologous polypeptide are recombinant.
11. A host cell expressing the recombinant receptor of claim 10.
12. The isolated receptor of claim 7, wherein the heterologous polypeptide is a T1R1 polypeptide that is encoded by a nucleotide sequence that hybridizes under moderately stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:1, 2, 3, or 27.
13. The isolated receptor of claim 7, wherein the heterologous polypeptide is a T1R1 polypeptide that is encoded by a nucleotide sequence that hybridizes under highly stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:1, 2, 3, or 27.
14. The isolated receptor of claim 12, wherein the T1R1 polypeptide has an amino acid sequence of SEQ ID NO:1, 2, 3, or 27.
15. The isolated receptor of claim 12, wherein the T1R1 polypeptide is encoded by a nucleotide sequence of SEQ ID NO:4, 5, 6, or 26.
16. The isolated receptor of claim 12, wherein the receptor binds to amino acid taste ligands.
17. The isolated receptor of claim 16, wherein the taste ligand is selected from the group consisting of cysteine, methionine, arginine, valine, aspartic acid, glutamic acid, lysine, proline, leucine, isoleucine, alanine, asparagine, histidine, phenylalanine, tryptophan, glutamine, serine, threonine, glycine, glutamate, mono-sodium glutamate, and L-AP4.
18. The isolated receptor of claim 12, wherein the T1R3 polypeptide and the T1R1 polypeptide are recombinant.
19. A host cell expressing the recombinant receptor of claim 18.
20. The isolated receptor of claim 7, wherein the heterologous polypeptide is a T1R2 polypeptide that is encoded by a nucleotide sequence that hybridizes under moderately stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:7, 8, or 9.
21. The isolated receptor of claim 7, wherein the heterologous polypeptide is a T1R2 polypeptide is encoded by a nucleotide sequence that hybridizes under highly stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:7, 8, or 9.
22. The isolated receptor of claim 20, wherein the T1R2 polypeptide has an amino acid sequence of SEQ ID NO:7, 8, or 9.
23. The isolated receptor of claim 20, wherein the T1R2 polypeptide is encoded by a nucleotide sequence of SEQ ID NO:10, 11, 12, or 28.
24. The isolated receptor of claim 20, wherein the receptor binds to sweet taste ligands.
25. The isolated receptor of claim 24, wherein the sweet taste ligand is selected from the group consisting of sucrose, fructose, saccharin, acesulfame-K, dulcin, aspartame, cyclamate, and guanidoinoacetic acid 1 and 2 (GA-1 and GA-2).
26. The isolated receptor of claim 20, wherein the receptor binds to D-amino acid taste ligands.
27. The isolated receptor of claim 20, wherein the T1R3 polypeptide and the T1R2 polypeptide are recombinant.
28. A host cell expressing the recombinant receptor of claim 27.
29. The isolated receptor of claim 1, wherein the receptor has G protein coupled receptor activity.
30. The isolated receptor of claim 1, wherein the receptor specifically binds to antibodies raised against SEQ ID NO: 15, 20, 23, 25, or 30.
31. An isolated taste receptor comprising a T1R3 polypeptide and a T1R1 polypeptide, wherein the T1R3 polypeptide is encoded by a nucleotide sequence that hybridizes under highly stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:15, 20, 23, 25 or 30; and wherein the T1R1 polypeptide that is encoded by a nucleotide sequence that hybridizes under moderately stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:1, 2, 3, or 27.
32. An isolated taste receptor comprising a T1R3 polypeptide and a T1R2 polypeptide, wherein the T1R3 polypeptide is encoded by a nucleotide sequence that hybridizes under highly stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:15, 20, 23, 25 or 30; and wherein the T1R2 polypeptide that is encoded by a nucleotide sequence that hybridizes under moderately stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:7, 8, or 9.
33. An antibody that specifically binds to the taste receptor claim 1.
34. The antibody of claim 33, wherein the antibody specifically binds to a taste receptor comprising T1R1 and T1R3.
35. The antibody of claim 34, wherein the T1R1 polypeptide and the T1R3 polypeptide are non-covalently linked.
36. The antibody of claim 34, wherein the T1R1 polypeptide and the T1R3 polypeptide are covalently linked.
37. The antibody of claim 33, wherein the antibody specifically binds to a taste receptor comprising T1R2 and T1R3.
38. The antibody of claim 37, wherein the T1R2 polypeptide and the T1R3 polypeptide are non-covalently linked.
39. The antibody of claim 37, wherein the T1R2 polypeptide and the T1R3 polypeptide are covalently linked.
40. A method of identifying a compound that modulates taste signal transduction in taste cells, the method comprising the steps of (i) contacting the compound with a taste receptor comprising a T1R3 polypeptide, wherein the T1R3 polypeptide is encoded by a nucleotide sequence that hybridizes under moderately stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:15, 20, 23, 25 or 30; and (ii) determining the functional effect of the compound upon the receptor, thereby identifying a compound that modulates taste signal transduction.
41. The method of claim 40, wherein the T1R3 polypeptide is encoded by a nucleotide sequence that hybridizes under highly stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:15, 20, 23, 25, or 30.
42. The method of claim 40, wherein the receptor comprises a T1R3 polypeptide and a heterologous polypeptide.
43. The method of claim 41, wherein the T1R3 polypeptide and the heterologous polypeptide are non-covalently linked.
44. The method of claim 41, wherein the heterologous polypeptide is a T1R1 polypeptide encoded by a nucleotide sequence that hybridizes under moderately stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:1, 2, 3, or 27.
45. The method of claim 41, wherein the heterologous polypeptide is a T1R1 polypeptide encoded by a nucleotide sequence that hybridizes under highly stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ
ID NO:1, 2, 3, or 27.
46. The method of claim 41, wherein the T1R1 polypeptide has an amino acid sequence of SEQ ID NO:1, 2, 3, or 27.
47. The method of claim 41, wherein the heterologous polypeptide is a T1R2 polypeptide encoded by a nucleotide sequence that hybridizes under moderately stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:7, 8, or 9.
48. The method of claim 41, wherein the heterologous polypeptide is a T1R2 polypeptide encoded by a nucleotide sequence that hybridizes under highly stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ
ID NO:7, 8, or 9.
49. The method of claim 41, wherein the T1R2 polypeptide has an amino acid sequence of SEQ ID NO:7, 8, or 9.
50. The method of claim 40, wherein the receptor is recombinant.
51. The method of claim 40, wherein the receptor has G protein coupled receptor activity.
52. The method of claim 40, wherein the functional effect is measured in vitro.
53. The method of claim 52, wherein the functional effect is a physical effect.
54. The method of claim 52, wherein the receptor is linked to a solid phase.
55. The method of claim 52, wherein the functional effect is determined by measuring binding of a compound to the receptor.
56. The method of claim 55, wherein the functional effect is determined by measuring binding of a compound to the extracellular domain of the receptor.
57. The method of claim 40, wherein the receptor is expressed in a cell or cell membrane.
58. The method of claim 57, wherein the functional effect is a physical effect.
59. The method of claim 58, wherein the functional effect is determined by measuring ligand binding to the receptor.
60. The method of claim 59, wherein the functional effect is determined by measuring binding of a compound to the extracellular domain of the receptor.
61. The method of claim 57, wherein the functional effect is a chemical or phenotypic effect.
62. The method of claim 61, wherein the functional effect is determined by measuring changes in intracellular cAMP, IP3, or Ca2+.
63. The method of claim 57, wherein the cell is a mammalian cell.
64. The method of claim 63, wherein the cell is a human cell.
65. A method of identifying a compound that modulates taste signal transduction in taste cells, the method comprising the steps of (i) contacting the compound with cell expressing a taste receptor comprising a T1R3 polypeptide and a T1R2 polypeptide, wherein the T1R3 polypeptide is encoded by a nucleotide sequence that hybridizes under highly stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:15, 20, 23, 25, or 30;
and wherein the T1R2 polypeptide that is encoded by a nucleotide sequence that hybridizes under moderately stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:7, 8, or 9; and (ii) determining the functional effect of the compound upon the receptor, thereby identifying a compound that modulates taste signal transduction.
66. The method of claim 65, wherein the T1R2 polypeptide and the T1R3 polypeptide are non-covalently linked.
67. The method of claim 65, wherein the T1R2 polypeptide and the T1R3 polypeptide are covalently linked.
68. A method of identifying a compound that modulates taste signal transduction in taste cells, the method comprising the steps of (i) contacting the compound with cell expressing a taste receptor comprising a T1R3 polypeptide and a T1R1 polypeptide, wherein the T1R3 polypeptide is encoded by a nucleotide sequence that hybridizes under highly stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:15, 20, 23, 25, or 30;
and wherein the T1R1 polypeptide that is encoded by a nucleotide sequence that hybridizes under moderately stringent hybridization conditions to a nucleotide sequence encoding an amino acid sequence of SEQ ID NO:1, 2, 3, or 27; and (ii) determining the functional effect of the compound upon the receptor, thereby identifying a compound that modulates taste signal transduction.
69. The method of claim 68, wherein the T1R1 polypeptide and the T1R3 polypeptide are non-covalently linked.
70. The method of claim 68, wherein the T1R1 polypeptide and the T1R3 polypeptide are covalently linked.
71. An isolated nucleic acid that hybridizes under moderately stringent conditions to a nucleic acid that encodes an amino acid sequence of SEQ ID
NO:15, 20, 23, 25, or 30.
72. The nucleic acid of claim 71, wherein the nucleic acid hybridizes under highly stringent conditions to a nucleic acid that encodes an amino acid sequence of SEQ ID
NO:15, 20, 23, 25, or 30.
73. The nucleic acid of claim 71, wherein the nucleic acid encodes an amino acid sequence of SEQ ID NO:15, 20, 23, 25, or 30.
74. The nucleic acid of claim 71, wherein the nucleic acid has a nucleotide sequence of SEQ ID NO:14, 19, 22, 24, or 29.
75. An expression vector comprising the nucleic acid of claim 71.
76. A host cell comprising the expression vector of claim 75.
77. An isolated polypeptide encoded by a nucleic acid that hybridizes under moderately stringent conditions to a nucleic acid that encodes an amino acid sequence of SEQ ID NO:15, 20, 23, 25, or 30.
78. The polypeptide of claim 77, wherein the polypeptide is encoded by a nucleic acid that hybridizes under highly stringent conditions to a nucleic acid that encodes an amino acid sequence of SEQ ID NO:15, 20, 23, 25, or 30.
79. The polypeptide of claim 77, wherein the polypeptide is encoded by nucleic acid that encodes an amino acid sequence of SEQ ID NO:15, 20, 23, 25, or 30.
80. The polypeptide of claim 77, wherein the polypeptide is encoded by nucleic acid that has a nucleotide sequence of SEQ ID NO:14, 19, 22, 24, or 29.
81. An antibody that specifically binds to the polypeptide of claim 77.
CA2452716A 2001-07-03 2002-07-03 Mammalian sweet and amino acid heterodimeric taste receptors Expired - Lifetime CA2452716C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US30289801P 2001-07-03 2001-07-03
US60/302,898 2001-07-03
US09/927,315 US7402400B2 (en) 2001-07-03 2001-08-10 Mammalian sweet taste receptors
US09/927,315 2001-08-10
US35892502P 2002-02-22 2002-02-22
US60/358,925 2002-02-22
PCT/US2002/021269 WO2003004992A2 (en) 2001-07-03 2002-07-03 Mammalian sweet and amino acid heterodimeric taste receptors

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Publication Number Publication Date
CA2452716A1 true CA2452716A1 (en) 2003-01-16
CA2452716C CA2452716C (en) 2012-06-26

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EP (1) EP1585954B1 (en)
JP (3) JP2005505262A (en)
AU (2) AU2002320294B2 (en)
CA (1) CA2452716C (en)
WO (1) WO2003004992A2 (en)

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AU2009206153B2 (en) 2012-01-12
AU2009206153A1 (en) 2009-08-27
CA2452716C (en) 2012-06-26
US9347935B2 (en) 2016-05-24
EP1585954B1 (en) 2014-03-26
JP2009077718A (en) 2009-04-16
US20030166137A1 (en) 2003-09-04
WO2003004992A3 (en) 2006-10-05
AU2002320294B2 (en) 2009-01-15
US7588900B2 (en) 2009-09-15
US20140024043A1 (en) 2014-01-23
US20110151483A1 (en) 2011-06-23
US20080318251A1 (en) 2008-12-25
JP2005505262A (en) 2005-02-24
JP2011217752A (en) 2011-11-04
WO2003004992A2 (en) 2003-01-16
EP1585954A4 (en) 2008-01-02
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