Product and process for T cell regulation
First Claim
1. An isolated Peptide-L-MHC heterodimer comprising:
- a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class II β
chain and at least a portion of an MHC class II α
chain;
b) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; and
c) a linker comprising an amino acid sequence of at least about 15 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class II α and
β
chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L- MHC heterodimer and said T cell receptor;
wherein said antigenic peptide, linker and at least one of said MHC class II α and
β
chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a product and process for regulating the activity of T cells using major histocompatibility complexes (MHC) stably linked to antigenic peptides. Disclosed is an antigenic peptide covalently linked to a major histocompatibility complex (MHC) protein by a novel linker, thereby enabling the formation of a stable peptide-MHC complex, alone or in combination with additional MHC protein chains, capable of being recognized by a T cell receptor (TCR). Also disclosed is a nucleic molecule having a sequence encoding a Peptide-L-MHC molecule comprising an antigenic peptide joined by a linker to an MHC segment. The invention is additionally directed to formulations comprising an antigenic peptide joined by a linker to an MHC segment anchored in a lipid-containing substrate. Pharmaceutical reagents are also disclosed which contain an antigenic peptide joined by a linker to an MHC segment combined with a suitable carrier that is capable of presenting the Peptide-L-MHC molecule so that it is capable of being recognized by a T cell receptor.
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Citations
57 Claims
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1. An isolated Peptide-L-MHC heterodimer comprising:
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a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class II β
chain and at least a portion of an MHC class II α
chain;b) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; and c) a linker comprising an amino acid sequence of at least about 15 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class II α and
β
chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L- MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class II α and
β
chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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2. An isolated Peptide-L-MHC heterodimer comprising:
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a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class I α
chain and at least a portion of an MHC class I β
2m chain;b) an antigenic peptide comprising from about 8 to about 20 amino acid residues which binds to said peptide binding groove; and c) a linker comprising an amino acid sequence of at least about 8 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class I α and
β
2m chains, facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class I α and
β
2m chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide.
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22. A formulation which suppresses T cell activity comprising a Peptide-L-MHC heterodimer comprising:
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(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class II β
chain and at least a portion of an MHC class II α
chain;(b) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; and (c) a linker comprising an amino acid sequence of at least about 15 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class II α and
β
chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class II α and
β
chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide;wherein said heterodimer is anchored to the plasma membrane of a cell that does not stimulate a T cell response. - View Dependent Claims (24)
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23. A formulation which suppresses T cell activity comprising a Peptide-L-MHC heterodimer comprising:
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(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class I α
chain and at least a portion of an MHC class I β
2m chain;(b) an antigenic peptide comprising from about 8 to about 20 amino acid residues which binds to said peptide binding groove; and (c) a linker comprising an amino acid sequence of at least about 8 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class I α and
β
2m chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class I α and
β
2m chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide;wherein said heterodimer is anchored to the plasma membrane of a cell that does not stimulate a T cell response.
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25. A formulation which stimulates T cell activity comprising a Peptide-L-MHC heterodimer comprising:
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(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class II β
chain and at least a portion of an MHC class II α
chain;(b) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; and (c) a linker comprising an amino acid sequence of at least about 15 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class II α and
β
chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class II α and
β
chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide;wherein said heterodimer is anchored to the plasma membrane of a cell that stimulates a T cell response. - View Dependent Claims (27)
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26. A formulation which stimulates T cell activity comprising a Peptide-L-MHC heterodimer comprising:
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(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class I α
chain and at least a portion of an MHC class I β
2m chain;(b) an antigenic peptide comprising from about 8 to about 20 amino acid residues which binds to said peptide binding groove; and (c) a linker comprising an amino acid sequence of at least about 8 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class I α and
β
2m chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide linker and at least one of said MHC class I α and
β
2m chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide;wherein said heterodimer is anchored to the plasma membrane of a cell that stimulates a T cell response.
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28. A formulation which suppresses T cell activity comprising a Peptide-L-MHC heterodimer comprising:
-
(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class II β
chain and at least a portion of an MHC class II α
chain;(b) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; and (c) a linker comprising an amino acid sequence of at least about 15 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class II α and
β
chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class II α and
β
chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide;wherein said heterodimer is secreted from a cell that produces said heterodimer.
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29. A formulation which suppresses T cell activity comprising a Peptide-L-MHC heterodimer comprising:
-
(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class I α
chain and at least a portion of an MHC class I β
2m chain;(b) an antigenic peptide comprising from about 8 to about 20 amino acid residues which binds to said peptide binding groove; and (c) a linker comprising an amino acid sequence of at least about 8 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class I α and
β
2m chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class I α and
β
2m chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide;wherein said heterodimer is secreted from a cell that produces said heterodimer.
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30. A nucleic acid molecule comprising a sequence encoding a Peptide-L-MHC heterodimer comprising:
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(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class II β
chain and at least a portion of an MHC class II α
chain;(b) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; and (c) a linker comprising an amino acid sequence of at least about 15 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class II α and
β
chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said nucleic acid molecule comprises a nucleic acid sequence encoding a signal segment covalently attached to the N-terminus of said antigenic peptide. - View Dependent Claims (32, 33)
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31. A nucleic acid molecule comprising a sequence encoding a Peptide-L-MHC heterodimer comprising:
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(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class I α
chain and at least a portion of an MHC class I β
2m chain;(b) an antigenic peptide comprising from about 8 to about 20 amino acid residues which binds to said peptide binding groove; and (c) a linker comprising an amino acid sequence of at least about 8 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class I α and
β
2m chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said nucleic acid molecule comprises a nucleic acid sequence encoding a signal segment covalently attached to the N-terminus of said antigenic peptide.
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34. A recombinant cell comprising a recombinant molecule comprising a nucleic acid molecule operatively linked to an expression vector, said nucleic acid molecule comprising a sequence encoding a Peptide-L-MHC heterodimer comprising;
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(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class II β
chain and at least a portion of an MHC class II α
chain;(b) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; and (c) a linker comprising an amino acid sequence of at least about 15 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class II α and
β
chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said nucleic acid molecule comprises a nucleic acid sequence encoding a signal segment covalently attached to the N-terminus of said antigenic peptide. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
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35. A recombinant cell comprising a recombinant molecule comprising a nucleic acid molecule operatively linked to an expression vector, said nucleic acid molecule comprising a sequence encoding a Peptide-L-MHC heterodimer comprising:
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(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class I α
chain and at least a portion of an MHC class I β
2m chain;(b) an antigenic peptide comprising from about 8 to about 20 amino acid residues which binds to said peptide binding groove; and
(c) a linker comprising an amino acid sequence of at least about 8 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class I α and
β
2m chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said nucleic acid molecule comprises a nucleic acid sequence encoding a signal segment covalently attached to the N-terminus of said antigenic peptide.
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43. A pharmaceutical reagent comprising an isolated Peptide-L-MHC heterodimer comprising:
-
(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class II β
chain and at least a portion of an MHC class II α
chain;(b) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; (c) a linker comprising an amino acid sequence of at least about 15 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class II α and
β
chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class II α and
β
chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide. - View Dependent Claims (45, 46, 47, 48, 49)
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44. A pharmaceutical reagent comprising an isolated Peptide-L-MHC heterodimer comprising:
-
(a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class I α
chain and at least a portion of an MHC class I β
2m chain;(b) an antigenic peptide comprising from about 8 to about 20 amino acid residues which binds to said peptide binding groove; and (c) a linker comprising an amino acid sequence of at least about 8 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class I α and
β
2m chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class I α and
β
2m chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide.
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50. A method for producing a Peptide-L-MHC.sub.α
- +β
heterodimer, comprising;a) culturing a cell transformed with at least one nucleic acid molecule comprising a sequence encoding a Peptide-L-MHC.sub.α
+β
heterodimer, comprising;(i) an MHC segment of said heterodimer comprising at least a portion of an MHC class II β
chain and at least a portion of an MHC class II α
chain which form a peptide binding groove;(ii) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; and (iii) a linker comprising an amino acid sequence of at least about 15 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class II α and
β
chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said peptide binding groove form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC.sub.α
+β
heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class II α and
β
chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide;said step of culturing being conducted to produce said Peptide-L-MHC.sub.α
+β
heterodimer; andb) recovering said Peptide-L-MHC.sub.α
+β
heterodimer.
- +β
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51. A method for producing a Peptide-L-MHC.sub.α
- +β
2m heterodimer, comprising;a) culturing a cell transformed with at least one nucleic acid molecule comprising a sequence encoding a Peptide-L-MHC.sub.α
+β
2m heterodimer, comprising;(i) an MHC segment of said heterodimer comprising at least a portion of an MHC class I α
chain and at least a portion of an MHC class I β
2m chain which form a peptide binding groove;(ii) an antigenic peptide comprising from about 8 to about 20 amino acid residues which binds to said peptide binding groove; and (iii) a linker comprising an amino acid sequence of at least about 8 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class I α and
β
2m chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said peptide binding groove form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC.sub.α
+β
2m heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class I α and
β
2m chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide;said step of culturing being conducted to produce said Peptide-L-MHC.sub.α
+β
2m heterodimer; andb) recovering said Peptide-L-MHC.sub.α
+β
2m heterodimer.
- +β
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52. A method for producing a Peptide-L-MHC.sub.α
- +β
heterodimer anchored to the plasma membrane of a cell comprising;a) culturing a cell transformed with at least one nucleic acid molecule having a sequence encoding a Peptide-L-MHC.sub.α
+β
heterodimer comprising;(i) an MHC segment of said heterodimer comprising at least a portion of an MHC class II α
chain protein having at least a portion of a transmembrane domain and a cytoplasmic domain and at least a portion of an MHC class II β
chain having at least a portion of a transmembrane domain and a cytoplasmic domain which form a peptide binding groove;(ii) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; and (iii) a linker comprising an amino acid sequence of at least about 15 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class II α and
β
chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering the interaction of said Peptide-L-MHC.sub.α
+β
heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class II α and
β
chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide;said step of culturing being conducted to produce said Peptide-L-MHC.sub.α
+β
heterodimer anchored to the plasma membrane of said cell; andb) recovering said cell.
- +β
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53. A method for producing a Peptide-L-MHC.sub.α
- +β
2m heterodimer anchored to the plasma membrane of a cell comprising;a) culturing a cell transformed with at least one nucleic acid molecule comprising a sequence encoding a Peptide-L-MHC.sub.α
+β
2m heterodimer comprising;(i) an MHC segment of said heterodimer comprising at least a portion of an MHC class I β
2m protein having at least a portion of a transmembrane domain and a cytoplasmic domain and at least a portion of an MHC class I α
chain having at least a portion of a transmembrane domain and a cytoplasmic domain which form a peptide binding groove;(ii) an antigenic peptide comprising from about 8 to about 20 amino acid residues which binds to said peptide binding groove; and (iii) a linker comprising an amino acid sequence of at least about 8 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class I α and
β
2m chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering the interaction of said Peptide-L-MHC.sub.α
+β
2m heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class I α and
β
2m chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide;said step of culturing being conducted to produce said Peptide-L-MHC.sub.α
+β
2m heterodimer anchored to the plasma membrane of said cell; andb) recovering said cell.
- +β
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54. A method to regulate an immune response comprising administering to an animal an effective amount of an isolated Peptide-L-MHC heterodimer comprising:
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a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class II β
chain and at least a portion of an MHC class II α
chain;b) an antigenic peptide comprising from about 5 to about 40 amino acid residues which binds to said peptide binding groove; and c) a linker comprising an amino acid sequence of at least about 15 amino acid residues, said peptide being covalently linked to the N-terminus of one of said MHC class II α and
β
chains of said MHC segment by said linker, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class II α and
β
chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide. - View Dependent Claims (56, 57)
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55. A method to regulate an immune response comprising administering to an animal an effective amount of an isolated Peptide-L-MHC heterodimer comprising:
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a) an MHC segment of said heterodimer which forms a peptide binding groove, comprising at least a portion of an MHC class I α
chain and at least a portion of an MHC class I β
2m chain;b) an antigenic peptide comprising from about 8 to about 20 amino acid residues which binds to said peptide binding groove; and c) a linker comprising an amino acid sequence of at least about 8 amino acid residues, wherein said peptide is covalently linked by said linker to the N-terminus of one of said MHC class I α and
β
2m chains, said linker facilitating the binding of said peptide to said peptide binding groove such that said peptide and said MHC segment form a conformation that is recognized by a T cell receptor without substantially hindering interaction between said Peptide-L-MHC heterodimer and said T cell receptor;wherein said antigenic peptide, linker and at least one of said MHC class I α and
β
2m chains is encoded by a nucleic acid molecule, said nucleic acid molecule including a nucleic acid sequence encoding a signal segment attached to the N-terminus of said antigenic peptide.
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Specification