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https://www.selleckchem.com/products/gs-441524.html Fibrosis is a condition characterized by the overproduction of extracellular matrix (ECM) components (e.g., collagen) in the myofibroblasts, causing tissue hardening and eventual organ dysfunction. Currently, the molecular mechanisms that regulate ECM production in the myofibroblasts are still obscure. In this study, we investigated the function of GPRC5B in the cardiac and lung myofibroblasts using real-time RT-PCR and siRNA-mediated knockdown. We discovered a significantly high expression of Gprc5b in the tissues of the fibrosis mice models and confirmed that Gprc5b was consistently expressed in the myofibroblasts of fibrotic hearts and lungs. We also found that Gprc5b expression was associated and may be dependent on the actin-MRTF-SRF signaling pathway. Notably, we observed that Gprc5b knockdown reduced the expression of collagen genes in the cardiac and lung myofibroblasts. Therefore, our findings reveal that GPRC5B enhances collagen production in the myofibroblasts, which directly promotes fibrosis in the tissues.Loss of polarity protein Par3 promotes breast cancer tumorigenesis and metastasis. The underlying molecular mechanisms of Par3 down-regulation and related prognostic significance in breast cancer remain unclear. Here, we discovered that Par3 down-regulation was associated with shorter relapse-free survival in Luminal A subtype of breast cancer. Par3 knockdown promoted breast cancer cells migration and invasion. Importantly, we identified that transcription factor Sp1 bound to PARD3 promoter region and induced Par3 expression. Breast cancer patients with low Sp1 showed significantly worse RFS and low expression level of Par3. Par3 over-expression partially reversed Sp1 knockdown induced migration and invasion. Together, decreased Sp1 level mediates Par3 down-regulation, which correlated with poor prognosis of ER + breast cancer patients, via reduced binding with PARD3 promoter.Linker histone H1 is mai

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