Metabolism
Lipocalin 13 enhances insulin secretion but is dispensable for systemic metabolic controlThorough preclinical evaluation reveals a negligible role of lipocalin 13 in systemic glucose and lipid metabolism.
Structural comparison of GLUT1 to GLUT3 reveal transport regulation mechanism in sugar porter familyA new structure of GLUT1, compared with GLUT3, can explain substrate affinity differences, and provide a functional rationale for key structural motifs that define the universal Sugar Porter family.
Degradation of arouser by endosomal microautophagy is essential for adaptation to starvation in DrosophilaDrosophila EPS8-family protein Arouser is constitutively degraded by endosomal microautophagy; its stabilisation upon starvation is essential to the animal adaptation and survival.
Identification and characterization of distinct brown adipocyte subtypes in C57BL/6J miceUsing a number of cell biological and statistical methods we identify and characterize EIF5, TCF25 and BIN1 as markers for individual brown adipocyte subtypes in C57BL/6J mice.
Inhibiting the reproduction of SARS-CoV-2 through perturbations in human lung cell metabolic networkUsing genomic and structural information from SARS-CoV-2, we created a biomass function capturing its amino and nucleic acid requirements and incorporated this into a metabolic model of the human lung cell to predict metabolic perturbations that inhibit virus reproduction.
MIC26 and MIC27 cooperate to regulate cardiolipin levels and the landscape of OXPHOS complexesApolipoproteins of MICOS, MIC26 and MIC27, cooperatively manage cristae structure, cardiolipin levels, and the global stability and integrity of respiratory chain supercomplexes and F1Fo–ATP synthase.
Mitochondrial spongiotic brain disease: astrocytic stress and harmful rapamycin and ketosis effectAstrocyte-specific mtDNA depletion causes spongiotic encephalopathy, aggravated by ketogenic diet or rapamycin. Astrocytes, but not neurons, drive mitochondrial integrated stress response in the CNS.
BH4 activates CaMKK2 and rescues the cardiomyopathic phenotype in rodent models of diabetesThis study reports that BH4 activates CaMKK2/PGC-1α; signaling pathway and has a therapeutic effect on diabetic cardiomyopathy.
Quantification of cristae architecture reveals time-dependent characteristics of individual mitochondriaA novel, machine-learning approach to quantify cristae density and architecture in live-cell super-resolution imaging characterizes the ultrastructural parameters of individual mitochondria over time.
Snail augments fatty acid oxidation by suppression of mitochondrial ACC2 during cancer progressionThis study reports a mechanism of mitochondrial ATP generation whereby EMT-inducer Snail controls ACC2 abundance and subsequent fatty acid oxidation to support cancer survival under starvation conditions.