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ESCRT-I fuels lysosomal degradation to restrict TFEB/TFE3 signaling via the Rag-mTORC1 pathwayESCRT-I deficiency impairs lysosome membrane turnover and induces homeostatic responses to lysosomal nutrient starvation including activation of MiT-TFE signaling caused by inhibition of the substrate-specific mTORC1 pathway.
Evaluating CRISPR-based prime editing for cancer modeling and CFTR repair in organoidsHere, the authors evaluate prime editing in human adult stem cell–derived organoids. TP53 mutations are modeled in hepatocyte and colon organoids and the clinical application of prime editing is evaluated by repairing mutations in CFTR without genome-wide off-targets.
Intensive single-cell analysis reveals immune-cell diversity among healthy individualsThis study describes the diversity of the immune-cell profiling in healthy adults at the single-cell level using RNA-seq, VDJ repertoires, and proteome.
SMN-deficient cells exhibit increased ribosomal DNA damageSMN deficiency leads to elevated ribosomal DNA damage that results in impaired ribosomal RNA synthesis and translation and is accompanied by a motor neuron-specific down-regulation of DDX21 protein.
Laminin is the ECM niche for trophoblast stem cellsLaminin functions as an ECM niche factor for trophoblast stem cells and secures trophoblast stem cell expansion through its interactions with integrin.
Phospholipids alter activity and stability of mitochondrial membrane-bound ubiquitin ligase MARCH5This study shows that lipids can act as regulators for the ubiquitination process and can control the stability and activity of a membrane-embedded E3 ubiquitin ligase.
TMPRSS2 and furin are both essential for proteolytic activation of SARS-CoV-2 in human airway cellsThe spike protein S of SARS-CoV-2 is activated by TMPRSS2 and furin. Inhibition of either one of these proteases can render the S protein unable to mediate virus entry and, therefore, provides a promising approach for COVID-19 treatment.
Quantitative analysis of nuclear pore complex organization in Schizosaccharomyces pombeCharacterization of nuclear pores in Schizosaccharomyces pombe identifies regions of heterogeneous NPC density and composition and shows that NPCs are excluded near the spindle pole body by Lem2-mediated centromere tethering.
Profiles of telomeric repeats in Insecta reveal diverse forms of telomeric motifs in HymenopteransA bioinformatic pipeline for telomeric repeat motif detection was applied to 129 insect species and identified diverse forms of telomeric motifs in Hymenopterans, including canonical 5-bp, novel 8- and 9-bp forms, suggesting extraordinary evolutionary fluidity of telomeric repeat in Hymenopterans.
mRNA COVID-19 vaccine booster fosters B- and T-cell responses in immunocompromised patientsImmunocompromised patients poorly respond to two doses of SARS-CoV-2 mRNA vaccines. However, an additional booster dose elicits a strong humoral and cellular immune response in these subjects.