» Articles » PMID: 38649439

Mitochondrial Enzyme FAHD1 Reduces ROS in Osteosarcoma

Overview
Journal Sci Rep
Specialty Science
Date 2024 Apr 22
PMID 38649439
Authors
Affiliations
Soon will be listed here.
Abstract

This study investigated the impact of overexpressing the mitochondrial enzyme Fumarylacetoacetate hydrolase domain-containing protein 1 (FAHD1) in human osteosarcoma epithelial cells (U2OS) in vitro. While the downregulation or knockdown of FAHD1 has been extensively researched in various cell types, this study aimed to pioneer the exploration of how increased catalytic activity of human FAHD1 isoform 1 (hFAHD1.1) affects human cell metabolism. Our hypothesis posited that elevation in FAHD1 activity would lead to depletion of mitochondrial oxaloacetate levels. This depletion could potentially result in a decrease in the flux of the tricarboxylic acid (TCA) cycle, thereby accompanied by reduced ROS production. In addition to hFAHD1.1 overexpression, stable U2OS cell lines were established overexpressing a catalytically enhanced variant (T192S) and a loss-of-function variant (K123A) of hFAHD1. It is noteworthy that homologs of the T192S variant are present in animals exhibiting increased resistance to oxidative stress and cancer. Our findings demonstrate that heightened activity of the mitochondrial enzyme FAHD1 decreases cellular ROS levels in U2OS cells. However, these results also prompt a series of intriguing questions regarding the potential role of FAHD1 in mitochondrial metabolism and cellular development.

Citing Articles

Single-Cell and Transcriptome Analysis of Periodontitis: Molecular Subtypes and Biomarkers Linked to Mitochondrial Dysfunction and Immunity.

Ma S, He H, Ren X J Inflamm Res. 2025; 17:11659-11678.

PMID: 39741754 PMC: 11687296. DOI: 10.2147/JIR.S498739.

References
1.
Weiss A, Loeffler J, Liedl K, Gstach H, Jansen-Durr P . The fumarylacetoacetate hydrolase (FAH) superfamily of enzymes: multifunctional enzymes from microbes to mitochondria. Biochem Soc Trans. 2018; 46(2):295-309. DOI: 10.1042/BST20170518. View

2.
Sheng G, Gao Y, Yang Y, Wu H . Osteosarcoma and Metastasis. Front Oncol. 2021; 11:780264. PMC: 8702962. DOI: 10.3389/fonc.2021.780264. View

3.
Ran T, Wang Y, Xu D, Wang W . Expression, purification, crystallization and preliminary crystallographic analysis of Cg1458: a novel oxaloacetate decarboxylase from Corynebacterium glutamicum. Acta Crystallogr Sect F Struct Biol Cryst Commun. 2011; 67(Pt 8):968-70. PMC: 3151140. DOI: 10.1107/S1744309111023220. View

4.
Gebregiworgis T, Purohit V, Shukla S, Tadros S, Chaika N, Abrego J . Glucose Limitation Alters Glutamine Metabolism in MUC1-Overexpressing Pancreatic Cancer Cells. J Proteome Res. 2017; 16(10):3536-3546. PMC: 5634392. DOI: 10.1021/acs.jproteome.7b00246. View

5.
Jin J, Byun J, Choi Y, Park K . Targeting glutamine metabolism as a therapeutic strategy for cancer. Exp Mol Med. 2023; 55(4):706-715. PMC: 10167356. DOI: 10.1038/s12276-023-00971-9. View