PMID- 26893781 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 1792-1074 (Print) IS - 1792-1082 (Electronic) IS - 1792-1074 (Linking) VI - 11 IP - 2 DP - 2016 Feb TI - Overexpression of ErbB2 renders breast cancer cells susceptible to 3-BrPA through the increased dissociation of hexokinase II from mitochondrial outer membrane. PG - 1567-1573 AB - ErbB2 is known to upregulate glycolysis in breast cancer, however, the precise mechanisms remain unclear. In the present study, ErbB2 upregulated Hexokinase II (HK II) activity by increasing the binding of HK II to the mitochondrial outer membrane. Dysregulated glucose metabolism in high ErbB2-expressing breast cancer cells induces susceptibility to glucose starvation and glycolysis inhibition. Additionally, HK II has a tendency to dissociate from the mitochondria outer membrane in ErbB2-overexpressing cells following treatment with the HK II inhibitor, 3-BrPA. Furthermore, 3-BrPA treatment results in decreased mitochondria membrane potential and release of cytochrome c into cytoplasm in ErbB2-overexpressing cells, leading to activation of the mitochondrial apoptotic signaling pathway. In summary, the results demonstrate a novel mechanism for ErbB2-activated glycolysis and reveal that 3-BrPA is effective in reducing ErbB2-positive breast cancer cell viability by targeting HK II in vitro and in vivo. FAU - Gao, Sujie AU - Gao S AD - Department of Anesthesiology, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China; Central Research Laboratory, The Second Hospital, Jilin University, Changchun, Jilin 130041, P.R. China. FAU - Chen, Xuebo AU - Chen X AD - Department of General Surgery, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China. FAU - Jin, Hongyong AU - Jin H AD - Department of General Surgery, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China. FAU - Ren, Shengnan AU - Ren S AD - Department of General Surgery, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China. FAU - Liu, Zhuo AU - Liu Z AD - Department of General Surgery, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China. FAU - Fang, Xuedong AU - Fang X AD - Department of General Surgery, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China. FAU - Zhang, Guizhen AU - Zhang G AD - Central Research Laboratory, The Second Hospital, Jilin University, Changchun, Jilin 130041, P.R. China. LA - eng PT - Journal Article DEP - 20151221 PL - Greece TA - Oncol Lett JT - Oncology letters JID - 101531236 PMC - PMC4734279 OTO - NOTNLM OT - 3-BrPA OT - ErbB2 OT - hexokinase II EDAT- 2016/02/20 06:00 MHDA- 2016/02/20 06:01 PMCR- 2015/12/21 CRDT- 2016/02/20 06:00 PHST- 2014/11/06 00:00 [received] PHST- 2015/07/16 00:00 [accepted] PHST- 2016/02/20 06:00 [entrez] PHST- 2016/02/20 06:00 [pubmed] PHST- 2016/02/20 06:01 [medline] PHST- 2015/12/21 00:00 [pmc-release] AID - OL-0-0-4043 [pii] AID - 10.3892/ol.2015.4043 [doi] PST - ppublish SO - Oncol Lett. 2016 Feb;11(2):1567-1573. doi: 10.3892/ol.2015.4043. Epub 2015 Dec 21.