Scientists found a decrease in endothelial cells and an increase in cells co-expressing CD31 and α-smooth muscle actin at eight weeks in heart tissue of mice subjected to transverse aortic constriction, which implied EndMT.
[Cell Death & Disease]
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Zhang, L., He, J., Wang, J., Liu, J., Chen, Z., Deng, B., Wei, L., Wu, H., Liang, B., Li, H., Huang, Y., Lu, L., Yang, Z., Xian, S., & Wang, L. (2021). Knockout RAGE alleviates cardiac fibrosis through repressing endothelial-to-mesenchymal transition (EndMT) mediated by autophagy. Cell Death & Disease, 12(5), 1–13. https://doi.org/10.1038/s41419-021-03750-4 Cite
Investigators used a combination of in vivo postpartum breast cancer models and in vitro assays to study the effects of inactivation of the MNK1/2-eIF4E axis on the pro-tumor function of select cells of the TME
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The authors discuss extracellular vesicle (EV) biology in 3D culture correlates of the tumor microenvironment (TME). This includes EV communication between cell types of the TME, differences in EV biogenesis and signaling associated with differing scaffold choices and in scaffold-free 3D cultures and cultivation of the premetastatic niche.
[International Journal of Molecular Sciences]
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CSA Medical, Inc. announced that all subjects have been enrolled in the RejuvenAir® System study. The aim of this study is to determine the mechanism by which Metered CryoSpray reduces the density of goblet cells responsible for over-producing mucus and observe re-growth of healthy cilia in the airways.
[CSA Medical, Inc. (Cision US, Inc.)]
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The authors constructed fibroblast atlases by integrating single-cell transcriptomic data from about 230,000 fibroblasts across 17 tissues, 50 datasets, 11 disease states and 2 species.
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Investigators reported that epithelial ductal elongation within human mammary organoid branches relied on the non-linear and plastic mechanical response of the surrounding collagen.
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The authors postulated the hypothesis that DDR1 and its ligand might ignite the interaction between uveal melanoma (UM) cells and their surrounding niche of liver thereby conferring strengthened survival, proliferation, stemness and eventually promoting metastatic colonization in liver.
[Signal Transduction and Targeted Therapy]
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Scientists demonstrated that tissue mechanics, or the stiffness of the wound bed, the ECM, and the stiffness of the cells also partook during wound-induced hair neogenesis; the hair primordia formation was not exclusive to molecular signaling events.
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Since inflammation is known to facilitate HIV sexual transmission, researchers investigated the role of hyaluronic acid in genital mucosal fibroblast-mediated enhancement of HIV infection.
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Egedal, J. H., Xie, G., Packard, T. A., Laustsen, A., Neidleman, J., Georgiou, K., Pillai, S. K., Greene, W. C., Jakobsen, M. R., & Roan, N. R. (2021). Hyaluronic acid is a negative regulator of mucosal fibroblast-mediated enhancement of HIV infection. Mucosal Immunology, 1–11. https://doi.org/10.1038/s41385-021-00409-3 Cite
Scientists investigated whether interleukin 4 (IL4) had antileukemic activity via immune-mediated mechanisms in an in vivo murine model of acute myeloid leukemia driven by the MLL–AF9 fusion gene.
The authors analyzed seven million autosomal germline variants in the TCGA cohort and test for association with established immune-related phenotypes that describe the tumor immune microenvironment.
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