| Literature DB >> 22266853 |
C U Lago1, S M Nowinski, J E Rundhaug, M E Pfeiffer, K Kiguchi, K Hirasaka, X Yang, E M Abramson, S B Bratton, O Rho, R Colavitti, M A Kenaston, T Nikawa, C Trempus, J Digiovanni, S M Fischer, E M Mills.
Abstract
Decreased mitochondrial oxidative metabolism is a hallmark bioenergetic characteristic of malignancy that may have an adaptive role in carcinogenesis. By stimulating proton leak, mitochondrial uncoupling proteins (UCP1-3) increase mitochondrial respiration and may thereby oppose cancer development. To test this idea, we generated a mouse model that expresses an epidermal-targeted keratin-5-UCP3 (K5-UCP3) transgene and exhibits significantly increased cutaneous mitochondrial respiration compared with wild type (FVB/N). Remarkably, we observed that mitochondrial uncoupling drove keratinocyte/epidermal differentiation both in vitro and in vivo. This increase in epidermal differentiation corresponded to the loss of markers of the quiescent bulge stem cell population, and an increase in epidermal turnover measured using a bromodeoxyuridine (BrdU)-based transit assay. Interestingly, these changes in K5-UCP3 skin were associated with a nearly complete resistance to chemically-mediated multistage skin carcinogenesis. These data suggest that targeting mitochondrial respiration is a promising novel avenue for cancer prevention and treatment.Entities:
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Year: 2012 PMID： 22266853 PMCID： PMC3688278 DOI： 10.1038/onc.2011.630
Source DB: PubMed Journal: Oncogene ISSN： 0950-9232 Impact factor: 8.756