Dana-farber-cancer Institute Inc.

Prasad V Kanteti

Stuart F Schlossman

Christopher E Rudd

Zhaohui Ao

The invention provides isolated nucleic acids molecules, designated Siva nucleic acid molecules, which encode proteins involved in immune cell apoptosis. The invention also provides antisense nucleic acid molecules, recombinant expression vectors containing Siva nucleic acid molecules, host cells into which the expression vectors have been introduced, and nonhuman transgenic animals in which a Siva gene has been introduced or disrupted. The invention still further provides isolated Siva proteins, fusion proteins, antigenic peptides and anti-Siva antibodies. Diagnostic, screening, and therapeutic methods utilizing compositions of the invention are also provided.

Siva genes, novel genes involved in CD27-mediated apoptosis

Disclosed are compositions and methods of blocking T cell signal transduction by introducing into a T cell a peptide comprising a PI 3-kinase-binding-sequence which decreases the association of PI 3-kinase with CD28. Also disclosed are compositions and methods of amplifying T cell activation by introducing into a T cell, a plurality of modified T cell surface proteins, the cytoplasmic tail of which comprises a plurality of copies of a PI 3-kinase-binding-sequence.

Growing community of inventors

Boston, MA, United States of America

Prasad V Kanteti