BCL-XL-interacting protein and use thereof
First Claim
Patent Images
1. An isolated protein complex having a first protein which is BCL-XL or a homologue or derivative or fragment thereof interacting with a second protein which is TCTP or a homologue or derivative or fragment thereof.
1 Assignment
0 Petitions
Accused Products
Abstract
Protein complexes are provided comprising BCL-XL and TCTP. The protein complexes are useful in screening assays for identifying compounds effective in modulating the protein complexes and in treating and/or preventing diseases and disorders associated with BCL-XL and TCTP. In addition, methods for detecting the protein complexes and modulating the functions and activities of the protein complexes or interacting members thereof are also provided.
47 Citations
38 Claims
- 1. An isolated protein complex having a first protein which is BCL-XL or a homologue or derivative or fragment thereof interacting with a second protein which is TCTP or a homologue or derivative or fragment thereof.
-
5. An isolated protein complex comprising a first protein interacting with a second protein, wherein:
-
(a) said first protein is selected from the group consisting of (i) BCL-XL, (ii) a BCL-XL fragment capable of interacting with TCTP, and (iii) a fusion protein containing BCL-XL or said BCL-XL fragment; and
(b) said second protein is selected from the group consisting of (1) TCTP, (2) a TCTP fragment capable of interacting with BCL-XL, and (3) a fusion protein containing TCTP or said TCTP fragment. - View Dependent Claims (6, 9, 10, 18, 35, 37, 38)
-
- 7. A fusion protein having a first polypeptide covalently linked to a second polypeptide, wherein said first polypeptide is BCL-XL or a homologue or fragment thereof, and wherein said second polypeptide is TCTP or a homologue or fragment thereof.
-
11. A method for selecting modulators of an interaction between a first protein and a second protein,
(a) said first protein being selected from the group consisting of (i) BCL-XL, (ii) a BCL-XL homologue having an amino acid sequence at least 90% identical to that of BCL-XL and capable of interacting with TCTP, (iii) a BCL-XL fragment capable of interacting with TCTP, and (iv) a fusion protein containing BCL-XL, said BCL-XL homologue or said BCL-XL fragment; - and
(b) said second protein being selected from the group consisting of (1) TCTP, (2) a TCTP homologue having an amino acid sequence at least 90% identical to that of TCTP and capable of interacting with BCL-XL, (3) a TCTP fragment capable of interacting with BCL-XL, and (4) a fusion protein containing TCTP, said TCTP homologue or said TCTP fragment, said method comprising;
contacting said first protein with said second protein in the presence of a test compound; and
detecting the interaction between said first protein and said second protein. - View Dependent Claims (12, 13, 14, 15, 16, 17, 19)
- and
-
20. A method for selecting modulators of an interaction between a first polypeptide and a second polypeptide, said first polypeptide being BCL-XL or a homologue or fragment thereof and said second polypeptide being TCTP or a homologue or fragment thereof, said method comprising:
-
providing in a host cell a first fusion protein having said first polypeptide, and a second fusion protein having said second polypeptide, wherein a DNA binding domain is fused to one of said first and second polypeptides while a transcription-activating domain is fused to the other of said first and second polypeptides;
providing in said host cell a reporter gene, wherein the transcription of the reporter gene is controlled by the interaction between the first polypeptide and the second polypeptide;
allowing said first and second fusion proteins to interact with each other within said host cell in the presence of a test compound; and
determining the expression of said reporter gene. - View Dependent Claims (21)
-
-
22. A method for selecting a compound capable of interfering with the interaction between a first protein and a second protein, wherein
(a) said first protein is selected from the group consisting of (i) BCL-XL, (ii) a BCL-XL homologue having an amino acid sequence at least 90% identical to that of BCL-XL and capable of interacting with TCTP, (iii) a BCL-XL fragment capable of interacting with TCTP, and (iv) a fusion protein containing BCL-XL, said BCL-XL homologue or said BCL-XL fragment; - and
(b) said second protein is selected from the group consisting of (1) TCTP, (2) a TCTP homologue having an amino acid sequence at least 90% identical to that of TCTP and capable of interacting with BCL-XL, (3) a TCTP fragment capable of interacting with BCL-XL, and (4) a fusion protein containing TCTP, said TCTP homologue or said TCTP fragment, said method comprising;
contacting said first protein with said second protein in the presence of a test compound and detecting the interaction between said first protein and said second protein; and
contacting said first protein with said second protein in the absence of said test compound and detecting the interaction between said first protein and said second protein. - View Dependent Claims (23, 24, 25, 26, 29)
- and
-
27. A composition comprising:
-
a first expression vector having a nucleic acid encoding a first protein; and
a second expression vector having a nucleic acid encoding a second protein, wherein;
(a) said first protein is selected from the group consisting of (i) BCL-XL, (ii) a BCL-XL homologue having an amino acid sequence at least 90% identical to that of BCL-XL and capable of interacting with TCTP, (iii) a BCL-XL fragment capable of interacting with TCTP, and (iv) a fusion protein containing BCL-XL, said BCL-XL homologue or said BCL-XL fragment; and
(b) said second protein is selected from the group consisting of (1) TCTP, (2) a TCTP homologue having an amino acid sequence at least 90% identical to that of TCTP and capable of interacting with BCL-XL, (3) a TCTP fragment capable of interacting with BCL-XL, and (4) a fusion protein containing TCTP, said TCTP homologue or said TCTP fragment.
-
-
28. An expression vector comprising:
-
(a) a first nucleic acid encoding a first protein selected from the group consisting of (i) BCL-XL, (ii) a BCL-XL homologue having an amino acid sequence at least 90% identical to that of BCL-XL and capable of interacting with TCTP, (iii) a BCL-XL fragment capable of interacting with TCTP, and (iv) a fusion protein containing BCL-XL, said BCL-XL homologue or said BCL-XL fragment; and
(b) a second nucleic acid encoding a second protein selected from the group consisting of (1) TCTP, (2) a TCTP homologue having an amino acid sequence at least 90% identical to that of TCTP and capable of interacting with BCL-XL, (3) a TCTP fragment capable of interacting with BCL-XL, and (4) a fusion protein containing TCTP, said TCTP homologue or said TCTP fragment.
-
-
30. A host cell comprising:
-
a first expression cassette having a nucleic acid encoding a first protein; and
a second expression cassette having a nucleic acid encoding a second protein, wherein;
(a) said first protein is selected from the group consisting of (i) BCL-XL, (ii) a BCL-XL homologue having an amino acid sequence at least 90% identical to that of BCL-XL and capable of interacting with TCTP, (iii) a BCL-XL fragment capable of interacting with TCTP, and (iv) a fusion protein containing BCL-XL, said BCL-XL homologue or said BCL-XL fragment; and
(b) said second protein is selected from the group consisting of (1) TCTP, (2) a TCTP homologue having an amino acid sequence at least 90% identical to that of TCTP and capable of interacting with BCL-XL, (3) a TCTP fragment capable of interacting with BCL-XL, and (4) a fusion protein containing TCTP, said TCTP homologue or said TCTP fragment. - View Dependent Claims (31, 32, 33, 34, 36)
-
Specification