The mitochondrial enzyme FAHD1 regulates complex II activity in breast cancer cells and is indispensable for basal BT-20 cells in vitro

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Holzknecht, M (Author) Other; Guerrero Navarro, L (Author) Other; Petit, M (Author) Other; Albertini, E (Author) Other; Damisch, E (Author) Other; Simonini, A (Author) Other; Fernando Schmitt (Author) FMUP; Parson, W (Author) Other; Fiegl, H (Author) Other; Weiss, A (Author) Other; Jansen Duerr, P (Author) Other

Journal

Title: FEBS Letters

Vol. 596

Pages: 2781-2794

ISSN: 0014-5793

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 2 Citations

Other information

Authenticus ID: P-00X-2JP

DOI: 10.1002/1873-3468.14462

Abstract (EN): The mitochondrial enzyme fumarylacetoacetate hydrolase domain-containing protein 1 (FAHD1) was identified to be upregulated in breast cancer tissues. Here, we show that FAHD1 is indispensable for the survival of BT-20 cells, representing the basal breast cancer cell type. A lentiviral knock-down of FAHD1 in the breast cancer cell lines MCF-7 and BT-20 results in lower succinate dehydrogenase (complex II) activity. In luminal MCF-7 cells, this leads to reduced proliferation when cultured in medium containing only glutamine as the carbon source. Of note, both cell lines show attenuated protein levels of the enzyme glutaminase (GLS) which activates programmed cell death in BT-20. These findings demonstrate that FAHD1 is crucial for the functionality of complex II in breast cancer cells and acts on glutaminolysis in the mitochondria.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 14