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Wang et al. show that mitochondrial stress alters paraspeckle number and morphology through regulating the transcription and processing of lncRNA NEAT1, retaining mRNAs of mitochondrial proteins in paraspeckles.
Fort et al. identify CYRI as a conserved negative modulator of Scar–WAVE-induced lamellipodia by interacting directly with active Rac1, thereby conferring pseudopod plasticity and dynamics during motility.
Mehta et al. create single-fluorophore kinase activity sensors for PKA, PKC and ERK in different colours, and demonstrate that they enable multiplex imaging of a combination of signalling activities in cell lines and primary rat neurons.
Zhu et al. show that the long noncoding RNA lncGata6 enhances Wnt signalling in intestinal stem cells by recruiting the NURF remodelling complex onto the Ehf promoter and initiating its transcription, which triggers expression of Lgr4/5.
Using super-resolution microscopy, tracking of single particle trajectories of endoplasmic reticulum (ER) luminal proteins traversing tubular ER, and measuring ER dynamics, Holcman et al. show that ER content is propelled by active luminal flow.
Studying early Drosophila wing epithelium development, Singh et al. find that individual cells are mechanically autonomous, and that their elongation along the proximal–distal axis is driven by polarized microtubule-mediated pushing forces.
Barnes et al. report a dynamic and reciprocal crosstalk between tissue tension and glycocalyx bulkiness that promotes a mesenchymal, stem-like phenotype in GBM.
Lenos et al. report that the spatiotemporal regulation of stem cell functionality is not intrinsically determined but environmentally defined during tumour growth and drug response in colon cancer.
Liu et al. show that reduced m6A mRNA methylation in endometrial cancer is oncogenic. Mechanistically, the AKT pathway is activated in these tumours due to altered expression of AKT regulators carrying m6A on their transcripts.
Using a small-molecule modulator of TORC2 signalling and a mechanosensitive probe, Riggi et al. reveal that decreased plasma membrane tension induces distinct PIP2-enriched domains that sequester and inactivate TORC2.
Castaño et al. show that primary breast tumours drive an IL-1β -mediated inflammatory response that inhibits cellular plasticity and metastatic colonization of metastasis-initiating cells.
Nichols et al. identify an SHP2 inhibitor that disrupts SOS1-mediated RAS–GTP loading with demonstrated efficacy in various types of tumour driven by mutant BRAF, NF1 or RAS.
Chan Wah Hak et al. show how plasma membrane patches are primed for fast endophilin-mediated endocytosis and disassembly, in the absence of receptor stimulation, through FBP17 and CIP4 binding to SHIP2 and lamellipodin.
Lawrence et al. show that mTORC1 capture and activation at the lysosome are regulated by nutrients that destabilize Rag GTPase–Ragulator binding, and delineate how cancer-specific Rag mutants increase mTORC1 signalling.
Almuedo-Castillo et al. show that extirpated embryos are reduced in size but exhibit normal proportions. Following a computational screen, the authors identify an increased concentration of the Nodal inhibitor Lefty to be responsible for the size scaling.
Madaro et al. show that denervation induces accumulation of IL-6–STAT3-activated fibro-adipogenic progenitors without inflammation or muscle regeneration, leading to muscle atrophy and fibrosis.
Beumer et al. show that intestinal enteroendocrine cells adjust their hormonal profile during migration from the crypt to the villus, depending on region-specific BMP signalling.
Sozen et al. devise an approach to combine embryonic stem cells, trophoblast stem cells and extra-embryonic endoderm stem cells into self-assembling embryo-like structures, which recapitulate key hallmarks of gastrulation in vitro.
Massagué and colleagues show that disseminated cancer cells use L1CAM to spread on capillaries and to achieve their outgrowth through activating YAP signalling.