Extracellular DNA secreted in yeast cultures is metabolism-specific and inhibits cell proliferation
November 23, 2023
Our study demonstrates that extracellular DNA released by living cells can impact the growth rate of Saccharomyces cerevisiae cultures, showing similarities to extrachromosomal circular DNA and leading to cell cycle arrest in the S phase, suggesting potential new functional roles of exDNA.
Fatty acid metabolism of Mycobacterium tuberculosis: A double-edged sword
February 28, 2022
Unlike other heterotrophic bacteria, Mycobacterium tuberculosis (Mtb) can co-catabolize a range of carbon sources simultaneously. Evolution of Mtb within host nutrient environment allows Mtb to consume the host’s fatty acids as a main carbon source during infection. The fatty acid-induced metabolic advantage greatly contributes to Mtb’s pathogenicity and virulence. Thus, the identification of key enzymes involved in Mtb’s fatty acid metabolism is urgently needed to aid new drug development. Two fatty acid metabolism enzymes, phosphoenolpyruvate carboxykinase (PEPCK) and isocitrate lyase (ICL) have been intensively studied as promising drug targets, but recently, Quinonez et al. (mBio, doi: 10.1128/mbio.03559-21) highlighted a link between the fatty acid-induced dormancy-like state and drug tolerance. (...)
Integrative metabolomics as emerging tool to study autophagy regulation
July 14, 2017
This review summarizes the advancements in metabolomics, particularly using NMR spectroscopy and mass spectrometry, and its increasing role in biological research, offering insights into autophagy regulation with a focus on key metabolites, recent studies, and future prospects in elucidating complex regulatory mechanisms of autophagy and related diseases.