Cell Biology
Time-resolved proteomic analyses of senescence highlight metabolic rewiring of mitochondriaTime-resolved proteomic analyses of senescent fibroblasts reveal that nearly 40% of the analyzed mitochondrial proteome have changed upon induction of senescence. Our study highlights the rewiring of mitochondrial metabolism as a central feature among all changes in mitochondrial pathways of senescent cells.
SLIT2/ROBO1 signaling suppresses mTORC1 for organelle control and bacterial killingSLIT2, a canonical neurorepellent, promotes lysosome biogenesis and augments autophagic flux to modulate immune responses in macrophages. In cancer cells, SLIT2 negatively regulates mTORC1 signaling to control cell growth.
Apolipoprotein E intersects with amyloid-β within neuronsApolipoprotein E4, the most important genetic risk factor for Alzheimer's disease, is shown to internalize into neurons and intersect with amyloid-β in endosomes–autophagosomes of neurites and modulate intraneuronal amyloid-β-42.
Modeling fibrotic alveolar transitional cells with pluripotent stem cell-derived alveolar organoidsIn vitro modeling of transitional alveolar epithelial cells in idiopathic pulmonary fibrosis by the use of a fibrosis cocktail and alveolar organoids from induced pluripotent stem cells.
UHRF1 is essential for proper cytoplasmic architecture and function of mouse oocytes and derived embryosThis study shows that the UHRF1 protein, an epigenetic factor, regulates cytoplasmic proteins in oocytes independently of gene expression and ensures normal preimplantation development.
MAP4K3 inhibits Sirtuin-1 to repress the LKB1–AMPK pathway to promote amino acid-dependent activation of the mTORC1 complexOur results reveal the existence of a novel signaling pathway linking amino acid satiety with MAP4K3-dependent suppression of SIRT1 to inactivate the repressive LKB1–AMPK pathway and thereby potently activate the mTORC1 complex to dictate the metabolic disposition of the cell.
The CHARGE syndrome-associated protein FAM172A controls AGO2 nuclear importAGO2 has long been known to shuttle between the cytosol and the nucleus of mammalian cells and this study helps to understand how this occurs.
WDR31 displays functional redundancy with GTPase-activating proteins (GAPs) ELMOD and RP2 in regulating IFT complex and recruiting the BBSome to ciliumOur research reveals that the deletion of WDR-31, RP-2, and ELMD-1 is leading to ciliary accumulation of IFT Complex B components and KIF17 kinesin. In conclusion, WDR31, ELMOD, and RP2 are working in regulating IFT via the BBSome.
Connexin 37 sequestering of activated-ERK in the cytoplasm promotes p27-mediated endothelial cell cycle arrestElevated Cx37 expression in endothelium stabilizes nuclear Foxo3a by sequestering active ERK in the cytoplasm, thereby up-regulating p27 expression to promote late G1 state and enable arterial gene expression.
Prostaglandin F2α regulates mitochondrial dynamics and mitophagy in the bovine corpus luteumThis study investigates the early effects of PGF2α signaling on mitochondrial dynamics and mitophagy in bovine corpora lutea. Luteolytic mediator PGF2α, via PKC/ERK and AMPK signaling, activates mitochondrial fission and promotes PINK–Parkin mitophagy, placing mitochondria as novel targets in response to PGF2α.