PMID- 25460043 OWN - NLM STAT- MEDLINE DCOM- 20150825 LR - 20240210 IS - 1873-3913 (Electronic) IS - 0898-6568 (Print) IS - 0898-6568 (Linking) VI - 27 IP - 2 DP - 2015 Feb TI - Regulation of DNA damage responses and cell cycle progression by hMOB2. PG - 326-39 LID - S0898-6568(14)00370-2 [pii] LID - 10.1016/j.cellsig.2014.11.016 [doi] AB - Mps one binder proteins (MOBs) are conserved regulators of essential signalling pathways. Biochemically, human MOB2 (hMOB2) can inhibit NDR kinases by competing with hMOB1 for binding to NDRs. However, biological roles of hMOB2 have remained enigmatic. Here, we describe novel functions of hMOB2 in the DNA damage response (DDR) and cell cycle regulation. hMOB2 promotes DDR signalling, cell survival and cell cycle arrest after exogenously induced DNA damage. Under normal growth conditions in the absence of exogenously induced DNA damage hMOB2 plays a role in preventing the accumulation of endogenous DNA damage and a subsequent p53/p21-dependent G1/S cell cycle arrest. Unexpectedly, these molecular and cellular phenotypes are not observed upon NDR manipulations, indicating that hMOB2 performs these functions independent of NDR signalling. Thus, to gain mechanistic insight, we screened for novel binding partners of hMOB2, revealing that hMOB2 interacts with RAD50, facilitating the recruitment of the MRE11-RAD50-NBS1 (MRN) DNA damage sensor complex and activated ATM to DNA damaged chromatin. Taken together, we conclude that hMOB2 supports the DDR and cell cycle progression. CI - Copyright (c) 2014 Elsevier Inc. All rights reserved. FAU - Gomez, Valenti AU - Gomez V AD - UCL Cancer Institute, University College London, WC1E 6BT, London, United Kingdom. FAU - Gundogdu, Ramazan AU - Gundogdu R AD - UCL Cancer Institute, University College London, WC1E 6BT, London, United Kingdom. FAU - Gomez, Marta AU - Gomez M AD - UCL Cancer Institute, University College London, WC1E 6BT, London, United Kingdom. FAU - Hoa, Lily AU - Hoa L AD - UCL Cancer Institute, University College London, WC1E 6BT, London, United Kingdom. FAU - Panchal, Neelam AU - Panchal N AD - UCL Cancer Institute, University College London, WC1E 6BT, London, United Kingdom. FAU - O'Driscoll, Mark AU - O'Driscoll M AD - Genome Damage and Stability Centre, University of Sussex, BN1 9RH, Brighton, United Kingdom. FAU - Hergovich, Alexander AU - Hergovich A AD - UCL Cancer Institute, University College London, WC1E 6BT, London, United Kingdom. Electronic address: a.hergovich@ucl.ac.uk. LA - eng GR - 090090/Z/09/Z/WT_/Wellcome Trust/United Kingdom GR - 11-0634/AICR_/Worldwide Cancer Research/United Kingdom GR - (BB/I021248/1/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom GR - 090090/WT_/Wellcome Trust/United Kingdom GR - 15394/CRUK_/Cancer Research UK/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141121 PL - England TA - Cell Signal JT - Cellular signalling JID - 8904683 RN - 0 (Antibiotics, Antineoplastic) RN - 0 (Cell Cycle Proteins) RN - 0 (Chromosomal Proteins, Non-Histone) RN - 0 (Cyclin-Dependent Kinase Inhibitor p21) RN - 0 (MOB2 protein, human) RN - 0 (NBN protein, human) RN - 0 (Nerve Tissue Proteins) RN - 0 (Nuclear Proteins) RN - 0 (RNA, Small Interfering) RN - 0 (TP53 protein, human) RN - 0 (Tumor Suppressor Protein p53) RN - 0 (structural maintenance of chromosome protein 1) RN - 80168379AG (Doxorubicin) RN - EC 2.7.11.1 (Ataxia Telangiectasia Mutated Proteins) SB - IM MH - Animals MH - Antibiotics, Antineoplastic/pharmacology MH - Ataxia Telangiectasia Mutated Proteins/metabolism MH - COS Cells MH - Cell Cycle Proteins/metabolism MH - Cell Line, Tumor MH - Chlorocebus aethiops MH - Chromosomal Proteins, Non-Histone/metabolism MH - Cyclin-Dependent Kinase Inhibitor p21/metabolism MH - *DNA Damage MH - Doxorubicin/pharmacology MH - G1 Phase Cell Cycle Checkpoints/drug effects/radiation effects MH - Humans MH - Nerve Tissue Proteins/antagonists & inhibitors/genetics/*metabolism MH - Nuclear Proteins/metabolism MH - Phosphorylation/drug effects/radiation effects MH - RNA, Small Interfering/metabolism MH - Radiation, Ionizing MH - S Phase Cell Cycle Checkpoints/drug effects/radiation effects MH - Signal Transduction/drug effects/radiation effects MH - Tumor Suppressor Protein p53/antagonists & inhibitors/genetics/metabolism PMC - PMC4276419 MID - EMS61424 OID - NLM: EMS61424 OTO - NOTNLM OT - Cell cycle checkpoint activation OT - Cell cycle progression OT - DNA damage response signalling OT - MRE11-RAD50-NBS1 protein complex OT - Mps one binder 2 OT - p53 tumour suppressor protein EDAT- 2014/12/03 06:00 MHDA- 2015/08/26 06:00 PMCR- 2015/02/01 CRDT- 2014/12/03 06:00 PHST- 2014/09/17 00:00 [received] PHST- 2014/11/03 00:00 [revised] PHST- 2014/11/14 00:00 [accepted] PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2015/08/26 06:00 [medline] PHST- 2015/02/01 00:00 [pmc-release] AID - S0898-6568(14)00370-2 [pii] AID - 10.1016/j.cellsig.2014.11.016 [doi] PST - ppublish SO - Cell Signal. 2015 Feb;27(2):326-39. doi: 10.1016/j.cellsig.2014.11.016. Epub 2014 Nov 21.