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A recently paper published in Cell reports that dendritic cells (DCs) are dysfunctional in the tumor environment. Tumor impairs DC function through induction of endoplasmic reticulum stress response and subsequent disruption of lipid metabolic homeostasis.
The mechanisms whereby the gut mucosa tolerates trillions of commensal bacteria without developing inflammation remain poorly understood. A recent Science article reveals that gut innate lymphoid cells constrain inflammatory T cell responses to commensal bacteria by adopting a strategy usually deployed by thymic epithelial cells to negatively select self-reactive T cells.
Neuronal activity-induced gene expression is crucial for the development and plasticity of the brain and for learning and memory. In a recent study published in Cell, Madabhushi et al. report that neuronal activity triggers the formation of DNA double-strand breaks on promoters of early response genes, which in turn controls their expression in neurons.
Culturing intestinal stem cells into 3D organoids results in heterogeneous cell populations, reflecting the in vivo cell type diversity. In a recent paper published in Nature, Wang et al. established a culture condition for a highly homogeneous population of intestinal stem cells.
