PMID- 22751129 OWN - NLM STAT- MEDLINE DCOM- 20130715 LR - 20130516 IS - 1476-5594 (Electronic) IS - 0950-9232 (Linking) VI - 32 IP - 20 DP - 2013 May 16 TI - Overexpression of the anti-apoptotic protein AVEN contributes to increased malignancy in hematopoietic neoplasms. PG - 2586-91 LID - 10.1038/onc.2012.263 [doi] AB - AVEN has been identified as an inhibitor of apoptosis, which binds to the adaptor protein, APAF-1, and thereby prevents apoptosome formation and mitochondrial apoptosis. Recent data have demonstrated high expression levels of AVEN messenger RNA in acute leukemias as well as a positive correlation between AVEN mRNA overexpression and poor prognosis in childhood acute lymphoblastic leukemia. On the basis of these data, we investigated the potential involvement of AVEN in tumorigenesis. First, we confirmed the overexpression of AVEN in T-cell acute lymphoblastic leukemia/lymphoma (T-ALL) patient samples. We then established a transgenic mouse model with T-cell-specific overexpression of AVEN, with which we demonstrated the oncogenic cooperation of AVEN with heterozygous loss of p53. Finally, we used a subcutaneous xenograft mouse model to show that AVEN knockdown in the T-ALL cell lines, MOLT-4 and CCRF-CEM, and in the acute myeloblastic leukemia cell line, Kasumi-1, leads to a halt in tumor growth owing to the increased apoptosis and decreased proliferation of tumor cells. Collectively, our data demonstrate that the anti-apoptotic molecule, AVEN, functions as an oncoprotein in hematopoietic neoplasms. FAU - Eissmann, M AU - Eissmann M AD - Chemotherapeutisches Forschungsinstitut Georg-Speyer-Haus, Frankfurt, Germany. FAU - Melzer, I M AU - Melzer IM FAU - Fernandez, S B M AU - Fernandez SB FAU - Michel, G AU - Michel G FAU - Hrabe de Angelis, M AU - Hrabe de Angelis M FAU - Hoefler, G AU - Hoefler G FAU - Finkenwirth, P AU - Finkenwirth P FAU - Jauch, A AU - Jauch A FAU - Schoell, B AU - Schoell B FAU - Grez, M AU - Grez M FAU - Schmidt, M AU - Schmidt M FAU - Bartholomae, C C AU - Bartholomae CC FAU - Newrzela, S AU - Newrzela S FAU - Haetscher, N AU - Haetscher N FAU - Rieger, M A AU - Rieger MA FAU - Zachskorn, C AU - Zachskorn C FAU - Mittelbronn, M AU - Mittelbronn M FAU - Zornig, M AU - Zornig M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120702 PL - England TA - Oncogene JT - Oncogene JID - 8711562 RN - 0 (AVEN protein, human) RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (Apoptosis Regulatory Proteins) RN - 0 (Membrane Proteins) SB - IM MH - Adaptor Proteins, Signal Transducing/*genetics/metabolism MH - Animals MH - Apoptosis Regulatory Proteins/*genetics/metabolism MH - Base Sequence MH - Cell Line, Tumor MH - Gene Expression Regulation, Leukemic MH - Gene Knockdown Techniques MH - Genes, p53 MH - Humans MH - Lymphoma, T-Cell/genetics MH - Membrane Proteins/*genetics/metabolism MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - Molecular Sequence Data MH - Precursor Cell Lymphoblastic Leukemia-Lymphoma/*genetics MH - Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/*genetics/pathology MH - Thymocytes/physiology MH - Xenograft Model Antitumor Assays EDAT- 2012/07/04 06:00 MHDA- 2013/07/17 06:00 CRDT- 2012/07/04 06:00 PHST- 2012/07/04 06:00 [entrez] PHST- 2012/07/04 06:00 [pubmed] PHST- 2013/07/17 06:00 [medline] AID - onc2012263 [pii] AID - 10.1038/onc.2012.263 [doi] PST - ppublish SO - Oncogene. 2013 May 16;32(20):2586-91. doi: 10.1038/onc.2012.263. Epub 2012 Jul 2.