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Tetraspanin CD37 Directly Mediates Transduction of Survival and Apoptotic Signals

  • Rosa Lapalombella
  • , Yuh Ying Yeh
  • , Liwen Wang
  • , Asha Ramanunni
  • , Sarwish Rafiq
  • , Shruti Jha
  • , Justin Staubli
  • , David M. Lucas
  • , Rajeswaran Mani
  • , Sarah E.M. Herman
  • , Amy J. Johnson
  • , Arletta Lozanski
  • , Leslie Andritsos
  • , Jeffrey Jones
  • , Joseph M. Flynn
  • , Brian Lannutti
  • , Peter Thompson
  • , Paul Algate
  • , Scott Stromatt
  • , David Jarjoura
  • Xiaokui Mo, Dasheng Wang, Ching Shih Chen, Gerard Lozanski, Nyla A. Heerema, Susheela Tridandapani, Michael A. Freitas, Natarajan Muthusamy, John C. Byrd

Research output: Contribution to journalArticlepeer-review

Abstract

Tetraspanins are commonly believed to act only as "molecular facilitators," with no direct role in signal transduction. We herein demonstrate that upon ligation, CD37, a tetraspanin molecule expressed on mature normal and transformed B cells, becomes tyrosine phosphorylated, associates with proximal signaling molecules, and initiates a cascade of events leading to apoptosis. Moreover, we have identified two tyrosine residues with opposing regulatory functions: one lies in the N-terminal domain of CD37 in a predicted "ITIM-like" motif and mediates SHP1-dependent death, whereas the second lies in a predicted "ITAM motif" in the C-terminal domain of CD37 and counteracts death signals by mediating phosphatidylinositol 3-kinase-dependent survival.

Original languageEnglish (US)
Pages (from-to)694-708
Number of pages15
JournalCancer Cell
Volume21
Issue number5
DOIs
StatePublished - May 25 2012

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cell Biology
  • Cancer Research

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