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β-Sitosterol modulates osteogenic and adipogenic balance in BMSCs to suppress osteoporosis via regulating mTOR-IMP1-Adipoq axis.
Phytomedicine
January 2025
Academy of Integrative Medicine, Dalian Medical University, Dalian, China; Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, China. Electronic address:
Background: Osteoporosis (OP) is a prevalent global health concern, impacting millions of individuals, especially the elderly. The etiology of senile OP is associated with the imbalance of osteogenic and adipogenic differentiation in the bone marrow mesenchymal stem cells (BMSCs). The imbalance of BMSCs differentiation fate will leading to bone loss and lipids accumulation.
View Article and Find Full Text PDFMultiscale footprints reveal the organization of cis-regulatory elements.
Nature
January 2025
Gene Regulation Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, USA.
Cis-regulatory elements (CREs) control gene expression and are dynamic in their structure and function, reflecting changes in the composition of diverse effector proteins over time. However, methods for measuring the organization of effector proteins at CREs across the genome are limited, hampering efforts to connect CRE structure to their function in cell fate and disease. Here we developed PRINT, a computational method that identifies footprints of DNA-protein interactions from bulk and single-cell chromatin accessibility data across multiple scales of protein size.
View Article and Find Full Text PDFIrisin reshapes bone metabolic homeostasis to delay age-related osteoporosis by regulating the multipotent differentiation of BMSCs via Wnt pathway.
Front Mol Biosci
January 2025
The First Clinical Medical College, Gansu University of Chinese Medicine, Lanzhou, China.
Introduction: Bone aging is linked to changes in the lineage differentiation of bone marrow stem cells (BMSCs), which show a heightened tendency to differentiate into adipocytes instead of osteoblasts. The therapeutic potential of irisin in addressing age-related diseases has garnered significant attention. More significantly, irisin has the capacity to enhance bone mass recovery and sustain overall bone health.
View Article and Find Full Text PDFTranscriptomic dynamics and cell-to-cell communication during the transition of prospermatogonia to spermatogonia revealed at single-cell resolution.
BMC Genomics
January 2025
Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, Qinghai, 810008, China.
Background: Spermatogonia are essential for the continual production of sperm and regeneration of the entire spermatogenic lineage after injury. In mammals, spermatogonia are formed in the neonatal testis from prospermatogonia (also termed gonocytes), which are established from primordial germ cells during fetal development. Currently, the molecular regulation of the prospermatogonial to spermatogonia transition is not fully understood.
View Article and Find Full Text PDFTransient upregulation of procaspase-3 during oligodendrocyte fate decisions.
J Neurosci
January 2025
Department of Biological Sciences, Dartmouth College, Hanover, NH 03755, USA
Oligodendrocytes are generated throughout life and in neurodegenerative conditions from brain resident oligodendrocyte precursor cells (OPCs). The transition from OPC to oligodendrocyte involves a complex cascade of molecular and morphological states that position the cell to make a fate decision to integrate as a myelinating oligodendrocyte or die through apoptosis. Oligodendrocyte maturation impacts the cell death mechanisms that occur in degenerative conditions, but it is unclear if and how the cell death machinery changes as OPCs transition into oligodendrocytes.
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