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| http://dx.doi.org/10.1085/jgp.201210862 | DOI Listing |
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Inhibition of triglyceride metabolism-associated enhancers alters lipid deposition during adipocyte differentiation.
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State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu, China.
Triglyceride (TG) metabolism is a complex and highly coordinated biological process regulated by a series of genes, and its dysregulation can lead to the occurrence of disorders in lipid metabolism. However, the transcriptional regulatory mechanisms of crucial genes in TG metabolism mediated by enhancer-promoter interactions remain elusive. Here, we identified candidate enhancers regulating the Agpat2, Dgat1, Dgat2, Pnpla2, and Lipe genes in 3T3-L1 adipocytes by integrating epigenomic data (H3K27ac, H3K4me1, and DHS-seq) with chromatin three-dimensional interaction data.
View Article and Find Full Text PDFCRM1 regulates androgen receptor stability and impacts DNA repair pathways in prostate cancer, independent of the androgen receptor.
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Prostate Cancer/Genitourologic Program, Oncology, The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Among the known nuclear exportins, CRM1 is the most studied prototype. Dysregulation of CRM1 occurs in many cancers, hence, understanding the role of CRM1 in cancer can help in developing synergistic therapeutics. The study investigates how CRM1 affects prostate cancer growth and survival.
View Article and Find Full Text PDFAllosteric regulation of pyruvate kinase enables efficient and robust gluconeogenesis by preventing metabolic conflicts and carbon overflow.
mSystems
January 2025
Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA.
Gluconeogenesis, the reciprocal pathway of glycolysis, is an energy-consuming process that generates glycolytic intermediates from non-carbohydrate sources. In this study, we demonstrate that robust and efficient gluconeogenesis in bacteria relies on the allosteric inactivation of pyruvate kinase, the enzyme responsible for the irreversible final step of glycolysis. Using the model bacterium as an example, we discovered that pyruvate kinase activity is inhibited during gluconeogenesis via its extra C-terminal domain (ECTD), which is essential for autoinhibition and metabolic regulation.
View Article and Find Full Text PDFIntestinal Epithelial Ptpn23 Is Essential For Gut Barrier Integrity And Prevention Of Fatal Bacterial Translocation.
J Crohns Colitis
January 2025
Department of Gastroenterology and Hepatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Background And Aims: Protein tyrosine phosphatase non-receptor type 23 (PTPN23) regulates the internalization of growth factor receptors such as the epithelial growth factor receptor (EGFR). Given the crucial function of such receptors in intestinal epithelial cells (IECs), we assessed the involvement of PTPN23 in intestinal homeostasis and epithelial proliferation.
Methods: We generated mouse models with constitutive (PTPN23fl/flVilCre+/-) or inducible (PTPN23fl/flVilCreERT+/-) deletion of PTPN23 in IEC.
Delving Into lncRNA-Mediated Regulation of Autophagy-Associated Signaling Pathways in the Context of Breast Cancer.
Cell Biol Int
January 2025
Department of Medical Laboratory Technology, College of Medical Technology, The Islamic University, Najaf, Iraq.
Breast cancer is a multifaceted and prevalent malignancy, impacting a considerable proportion of women globally. Numerous signaling pathways intricately regulate cellular functions such as growth, proliferation, and survival. Among the various regulators, lncRNAs have emerged as significant players despite their inability to encode proteins.
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