PMID- 28174693 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20191120 IS - 2211-5463 (Print) IS - 2211-5463 (Electronic) IS - 2211-5463 (Linking) VI - 7 IP - 2 DP - 2017 Feb TI - Fanconi anemia protein FANCD2 is activated by AICAR, a modulator of AMPK and cellular energy metabolism. PG - 284-292 LID - 10.1002/2211-5463.12185 [doi] AB - FANCD2 is a pivotal molecule in the pathogenesis of Fanconi anemia (FA), an autosomal recessive human syndrome with diverse clinical phenotypes, including cancer predisposition, short stature, and hematological abnormalities. In our previous study, we detected the functional association of FANC proteins, whose mutations are responsible for the onset of FA, with AMPK in response to DNA interstrand crosslinking lesions. Because AMPK is well known as a critical sensing molecule for cellular energy levels, we checked whether FANCD2 activation occurs after treatments affecting AMPK and/or cellular energy status. Among the treatments tested, AMPK-activating 5-aminoimidazole-4-carboxamide-ribonucleoside (AICAR) induced monoubiquitination and nuclear foci formation of FANCD2, which are biomarkers of FANCD2 activation. FANCD2 activation was abolished by treatments with Compound C, an AMPK inhibitor, or after AMPKalpha1 knockdown, substantiating the involvement of AMPK in AICAR-induced FANCD2 activation. Similarly, FANCA protein, which is a component of the FA core complex monoubiquitinating FANCD2, was required for this event. Furthermore, FANCD2 repression enhanced cell death upon AICAR treatments in transformed fibroblasts and cell cycle arrest in the renal cell carcinoma cell line Caki-1. Overall, this study showed FANCD2 involvement in response to AICAR, a chemical modulating cellular energy metabolism. FAU - Chun, Min Jeong AU - Chun MJ AD - Cancer Cell and Molecular Biology Branch Research Institute National Cancer Center Goyang Korea. FAU - Choi, Hana AU - Choi H AD - Cancer Cell and Molecular Biology Branch Research Institute National Cancer Center Goyang Korea. FAU - Jun, Dong Wha AU - Jun DW AD - Precision Medicine Branch Research Institute National Cancer Center Goyang Korea. FAU - Kim, Sunshin AU - Kim S AD - Precision Medicine Branch Research Institute National Cancer Center Goyang Korea. FAU - Kim, Yong-Nyun AU - Kim YN AD - Comparative Biomedicine Research Branch Research Institute National Cancer Center Goyang Korea. FAU - Kim, Soo-Youl AU - Kim SY AD - Cancer Cell and Molecular Biology Branch Research Institute National Cancer Center Goyang Korea. FAU - Lee, Chang-Hun AU - Lee CH AUID- ORCID: 0000-0002-4083-2077 AD - Cancer Cell and Molecular Biology Branch Research Institute National Cancer Center Goyang Korea. LA - eng PT - Journal Article DEP - 20170109 PL - England TA - FEBS Open Bio JT - FEBS open bio JID - 101580716 PMC - PMC5292659 OTO - NOTNLM OT - AICAR OT - AMP-activated protein kinase OT - FANCD2 EDAT- 2017/02/09 06:00 MHDA- 2017/02/09 06:01 PMCR- 2017/01/09 CRDT- 2017/02/09 06:00 PHST- 2016/10/27 00:00 [received] PHST- 2016/12/14 00:00 [revised] PHST- 2016/12/16 00:00 [accepted] PHST- 2017/02/09 06:00 [entrez] PHST- 2017/02/09 06:00 [pubmed] PHST- 2017/02/09 06:01 [medline] PHST- 2017/01/09 00:00 [pmc-release] AID - FEB412185 [pii] AID - 10.1002/2211-5463.12185 [doi] PST - epublish SO - FEBS Open Bio. 2017 Jan 9;7(2):284-292. doi: 10.1002/2211-5463.12185. eCollection 2017 Feb.