PMID- 34514415 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220831 IS - 2632-8674 (Electronic) IS - 2632-8674 (Linking) VI - 3 IP - 3 DP - 2021 Sep TI - CPT1A and fatty acid beta-oxidation are essential for tumor cell growth and survival in hormone receptor-positive breast cancer. PG - zcab035 LID - 10.1093/narcan/zcab035 [doi] LID - zcab035 AB - Chromosome 11q13-14 amplification is a defining feature of high-risk hormone receptor-positive (HR+) breast cancer; however, the mechanism(s) by which this amplicon contributes to breast tumorigenesis remains unclear. In the current study, proteogenomic analyses of >3000 breast tumors from the TCGA, METABRIC and CPTAC studies demonstrated that carnitine palmitoyltransferase 1A (CPT1A), which is localized to this amplicon, is overexpressed at the mRNA and protein level in aggressive luminal tumors, strongly associated with indicators of tumor proliferation and a predictor of poor prognosis. In vitro genetic studies demonstrated that CPT1A is required for and can promote luminal breast cancer proliferation, survival, as well as colony and mammosphere formation. Since CPT1A is the rate-limiting enzyme during fatty acid oxidation (FAO), our data indicate that FAO may be essential for these tumors. Pharmacologic inhibition of FAO prevented in vitro and in vivo tumor growth and cell proliferation as well as promoted apoptosis in luminal breast cancer cells and orthotopic xenograft tumor models. Collectively, our data establish an oncogenic role for CPT1A and FAO in HR+ luminal tumors and provide preclinical evidence and rationale supporting further investigation of FAO as a potential therapeutic opportunity for the treatment of HR+ breast cancer. CI - (c) The Author(s) 2021. Published by Oxford University Press on behalf of NAR Cancer. FAU - Jariwala, Nidhi AU - Jariwala N AD - Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08903, USA. FAU - Mehta, Gaurav A AU - Mehta GA AD - Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08903, USA. FAU - Bhatt, Vrushank AU - Bhatt V AD - Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08903, USA. FAU - Hussein, Shaimaa AU - Hussein S AUID- ORCID: 0000-0003-0849-9670 AD - Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08903, USA. FAU - Parker, Kimberly A AU - Parker KA AD - Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08903, USA. FAU - Yunus, Neha AU - Yunus N AD - Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08903, USA. FAU - Parker, Joel S AU - Parker JS AD - Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill NC, 27599, USA. FAU - Guo, Jessie Yanxiang AU - Guo JY AD - Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08903, USA. FAU - Gatza, Michael L AU - Gatza ML AUID- ORCID: 0000-0001-6796-7791 AD - Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, 08903, USA. LA - eng GR - P30 CA072720/CA/NCI NIH HHS/United States GR - R01 CA237347/CA/NCI NIH HHS/United States PT - Journal Article DEP - 20210909 PL - England TA - NAR Cancer JT - NAR cancer JID - 101769553 PMC - PMC8428294 EDAT- 2021/09/14 06:00 MHDA- 2021/09/14 06:01 PMCR- 2021/09/09 CRDT- 2021/09/13 07:03 PHST- 2021/04/29 00:00 [received] PHST- 2021/08/18 00:00 [revised] PHST- 2021/08/25 00:00 [accepted] PHST- 2021/09/13 07:03 [entrez] PHST- 2021/09/14 06:00 [pubmed] PHST- 2021/09/14 06:01 [medline] PHST- 2021/09/09 00:00 [pmc-release] AID - zcab035 [pii] AID - 10.1093/narcan/zcab035 [doi] PST - epublish SO - NAR Cancer. 2021 Sep 9;3(3):zcab035. doi: 10.1093/narcan/zcab035. eCollection 2021 Sep.