Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 108, Issue 38, Pages 15972-15977Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1017082108
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Funding
- Cancer Center [CA68485]
- National Institutes of Health (NIH) [AI068149, GM071735, DK020593]
- Institutional Bridge
- Vanderbilt University
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Poly(ADP-ribose) polymerase (PARP)14-a member of the B aggressive lymphoma (BAL) family of macrodomain-containing PARPs-is an ADP ribosyltransferase that interacts with Stat6, enhances induction of certain genes by IL-4, and is expressed in B lymphocytes. We now show that IL-4 enhancement of glycolysis in B cells requires PARP14 and that this process is central to a role of PARP14 in IL-4-induced survival. Thus, enhancements of AMP-activated protein kinase activity restored both IL-4-induced glycolytic activity in Parp14(-/-)B cells and prosurvival signaling by this cytokine. Suppression of apoptosis is central to B-lymphoid oncogenesis, and elevated macro-PARP expression has been correlated with lymphoma aggressiveness. Strikingly, PARP14 deficiency delayed B lymphomagenesis and reversed the block to B-cell maturation driven by the Myc oncogene. Collectively, these findings reveal links between a mammalian ADP ribosyltransferase, cytokine-regulated metabolic activity, and apoptosis; show that PARP14 influences Myc-induced oncogenesis; and suggest that the PARP14-dependent capacity to increase cellular metabolic rates may be an important determinant of lymphoma pathobiology.
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