Metabolism
Essential role of the Crk family-dosage in DiGeorge-like anomaly and metabolic homeostasisThis study presents evidence that CRK/CRKL and TBX1 may share pathways that participate in organogenesis affected in DiGeorge syndrome (22q11.2DS) via global control of gene expression and metabolism
Metabolic reprogramming of fibro/adipogenic progenitors facilitates muscle regenerationHigh-fat diet ameliorates muscle dystrophic phenotype by promoting the FAP-dependent myogenesis of satellite cells.
Refining the adipose progenitor cell landscape in healthy and obese visceral adipose tissue using single-cell gene expression profilingThis work dissects adipose progenitor cell (APC) heterogeneity in normal and obese adipose tissue using single-cell expression profiling. Novel APC subpopulations are identified and characterized.
Glycine cleavage system determines the fate of pluripotent stem cells via the regulation of senescence and epigenetic modificationsThe glycine cleavage system (GCS) is highly activated to promote stem cell pluripotency. The GCS catabolizes glycine to prevent methylglyoxal accumulation and to fuel H3K4me3 modification, promoting the expression of pluripotency genes.
Structural and functional characterization of the mitochondrial complex IV assembly factor Coa6The structures of the mitochondrial complex IV assembly factor Coa6 and a pathogenic mutant variant (W59CCoa6) are reported, providing molecular mechanisms for its mode of action and the loss-of-function mutation.
Ncl1-mediated metabolic rewiring critical during metabolic stressAccumulation of cysteine induces translational defects and metabolic rewiring that are abrogated by leucine in a transfer RNA (tRNA) methyltransferase NCL1-dependent manner in yeast.
Loss of PGC-1α in RPE induces mesenchymal transition and promotes retinal degenerationSustained loss of PGC-1α in RPE cells triggers mitochondrial/autophagic dysfunction and oxidative damage resulting in epithelial dedifferentiation and mesenchymal transition. RPE dysfunction caused by deletion of the PGC-1 coactivators in vivo causes retinal degeneration.
Mitochondrial acetyl-CoA reversibly regulates locus-specific histone acetylation and gene expressionThis study shows that genetic or pharmacological manipulation of the TCA cycle, when mitochondria are dysfunctional, can modulate histone acetylation and gene expression in the nucleus with physiological outcomes.
Substrate fluxes in brown adipocytes upon adrenergic stimulation and uncoupling protein 1 ablationQuantification of substrate fluxes in brown adipocytes clarifies contributors to extracellular acidification, identifies a futile cycle of lipolysis and re-esterification, and suggests a role for glycogen during activation.
Mitochondrial ubiquinone–mediated longevity is marked by reduced cytoplasmic mRNA translationThis study uses polysomal RNA sequencing to show that the translational efficiency of specific mRNA changes in long-lived Caenorhabditis elegans with reduced ubiquinone synthesis.