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Zhang et al. identify ALKBH7 as the demethylase of mitochondrial pre-tRNAs that regulates nascent mitochondrial RNA processing and translation. ALKBH7 loss impairs mitochondrial functions including fatty acid oxidation, leading to obesity.
Salvi et al. show that GLUT1 is critical for glucose uptake in response to external forces and that ankyrin G is required to retain GLUT1 at sites of E-cadherin force transmission, linking mechanotransduction and glucose uptake.
Garry et al. report that the histone reader PHF7 cooperates with the SWI/SNF complex at cardiac super enhancers to increase accessibility to core cardiac transcription factors, thus facilitating direct cardiac reprogramming.
Weijts et al. present a model of vasculogenesis in zebrafish whereby endothelial cells form a network of struts, allowing de novo formation of large-diameter blood vessels without a vascular cord or hollowing step.
Using gastruloids and human embryos, Yang et al. demonstrate that aneuploid embryos can still lead to healthy births due to elimination of aneuploid cells by apoptosis in a BMP4-dependent manner.
Recasens-Alvarez et al. model human ribosomopathies and find that apoptosis and cellular stress result from proteotoxic stress that overwhelms the degradation machinery.
Maquat and colleagues report that nonsense-mediated mRNA decay is activated upon loss of the fragile X syndrome protein FMRP in patient-derived induced pluripotent stem cells, which results in defects in neuronal differentiation.
Polarity cues regulate intestinal stem cell fate. Böttcher et al. demonstrate that mouse intestinal stem cells, which express the Wnt/planar cell polarity reporter Flattop, are primed either towards the enteroendocrine or Paneth cell lineage.
Xie et al. show that efficient miRNA biogenesis in Arabidopsis requires the assembly of pre-miRNA processing bodies mediated by SERRATE phase separation.
Phase separation concentrates mitochondrial RNA granules. Here Rey et al., show that mitochondrial RNA granules (MRGs) behaviour is consistent with liquid–liquid phase separation (LLPS) and their fusion coincides with mitochondrial remodelling.
Xu, Liu, Pen, Zhang et al. demonstrate that the SEL1L–HRD1 complex, which is part of the ERAD protein quality control machinery, safeguards haematopoietic stem cell identity and niche location by ensuring the haematopoietic stem cell surface expression of MPL.
Wei et al. show that clusters of unphosphorylated RNA polymerase II seed the nucleation of phase-separated condensates of TAF15, which further recruit RNA polymerase II to amplify transcriptional activation.
Two complementary studies from the laboratories of Riegman et al. and Katikaneni et al., respectively, identify a key role for controlled wave-like propagation of lipid peroxide signalling during wound detection in vivo and in ferroptotic cell death.
Two complementary studies from the laboratories of Riegman et al. and Katikaneni et al., respectively, identify a key role for controlled wave-like propagation of lipid peroxide signalling during wound detection in vivo, and in ferroptotic cell death.
Liu et al. characterize a mechanism of UFL1-mediated UFMylation of p53 at multiple lysine residues and show how this dampens MDM2-induced ubiquitination of p53 to enhance its stability and tumour-suppressive function.
Sato et al. demonstrate that IRF2, which negatively regulates interferon signalling, safeguards intestinal stem cells against non-infectious, sterile interferon stress by limiting their differentiation into secretory lineages.
Hsu et al. find that the protein kinase Akt acts as a co-adaptor in the clathrin coat complex and is needed in conjunction with ACAP1 to bind to cargo proteins to promote their recycling.
Tumour fibroblasts influence oncolytic viral therapy. Arwert et al. show that transcytosis of cancer cells into fibroblasts activates STING and IRF3 to upregulate interferon-β1, eliciting a transcriptional program to reduce the effectiveness of oncolytic viral therapy.
Borg et al. report that incorporation of the sperm-specific histone variant H3.10, which resists K27 methylation, causes H3K27me3 removal from sperm chromatin in plants, thus facilitating the expression of sperm-specific genes.