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Cell biology is the discipline of biological sciences that studies the structure, physiology, growth, reproduction and death of cells. Research in cell biology uses microscopic and molecular tools and examines all cell types, from unicellular organisms such as protozoa to the specialised cells that consitutute multicellular organisms.
NAD(H) redox homeostasis has a fundamental role in cellular metabolism. We screened for potential modulators of NAD(H) using a genome-scale RNA interference (RNAi) approach combined with SoNar, a high-performance sensor that is sensitive to the redox state of NAD(H). Our analysis identified HES4 as a negative regulator of the NADH/NAD+ ratio that influences pyrimidine biosynthesis and exerts a potent oncogenic effect.
Targeted biologics delivery requires programming multicomponent protein nanomaterials to enable selective targeting and response to environment changes in a single unified framework. A novel protein nanoparticle platform has been designed to modulate cell-surface target specificity, cargo packaging, and pH-dependent release of encapsulated cargo, providing exciting possibilities in biologics delivery.
Ferroptosis, a cell death mechanism induced by lipid peroxidation, is pivotal in tumor suppression. A recent study shows that tumor repopulating cells evade ferroptosis and develop resistance to therapy via subverting a lipid metabolism enzyme.
Ferroptosis is a form of cell death that has been associated with different diseases. Here the authors describe an association of ferroptosis with COVID-19 pulmonary pathologies in both patient samples and hamster model and suggest that the dysregulation in iron and lipid metabolism could provide targets to reduce pathology.
The authors identify genes potentially involved in NAD(H) redox modulation and provide insight on major hit HES4, which uses its transcriptional repressive function to drive pyrimidine nucleotide biosynthesis and tumor growth.
NAD(H) redox homeostasis has a fundamental role in cellular metabolism. We screened for potential modulators of NAD(H) using a genome-scale RNA interference (RNAi) approach combined with SoNar, a high-performance sensor that is sensitive to the redox state of NAD(H). Our analysis identified HES4 as a negative regulator of the NADH/NAD+ ratio that influences pyrimidine biosynthesis and exerts a potent oncogenic effect.
Verheyen and Gottardi revisit two seminal papers by the Basler, Peifer and Clevers labs elucidating the role of nuclear β-catenin in Wnt signal transduction through its interaction with TCF at Wnt target genes.