1.Molecular regulation of skeletal satellite cell's self-renewal.
Hui XIONG ; Yabin PU ; Yuehui MA ; Qingyun HU ; Weijun GUAN ; Xiangchen LI
Journal of Biomedical Engineering 2014;31(5):1168-1171
Skeletal muscle possesses a remarkable ability for its regeneration and injured tissue repair. This ability depends on the activity and contributions of muscle satellite cells. Proliferating satellite cells, termed myogenic precursor cells or myoblasts, are activated and driven out of their quiescent state upon muscle injury. In this summary, we present a review to summarize the molecular regulation in skeletal satellite cells to light on the satellite cells' self-renewal mechanism.
Cell Proliferation
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Humans
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Muscle, Skeletal
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Regeneration
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Satellite Cells, Skeletal Muscle
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cytology
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Soft Tissue Injuries
2.20()-Protopanaxatriol promotes the binding of P53 and DNA to regulate the antitumor network multiomic analysis.
Zhihua WANG ; Wenbo WU ; Xiangchen GUAN ; Shuang GUO ; Chaowen LI ; Ruixue NIU ; Jie GAO ; Min JIANG ; Liping BAI ; Elaine Laihan LEUNG ; Yuanyuan HOU ; Zhihong JIANG ; Gang BAI
Acta Pharmaceutica Sinica B 2020;10(6):1020-1035
Although the tumor suppressor P53 is known to regulate a broad network of signaling pathways, it is still unclear how certain drugs influence these P53 signaling networks. Here, we used a comprehensive single-cell multiomics view of the effects of ginsenosides on cancer cells. Transcriptome and proteome profiling revealed that the antitumor activity of ginsenosides is closely associated with P53 protein. A miRNA-proteome interaction network revealed that P53 controlled the transcription of at least 38 proteins, and proteome-metabolome profiling analysis revealed that P53 regulated proteins involved in nucleotide metabolism, amino acid metabolism and "Warburg effect". The results of integrative multiomics analysis revealed P53 protein as a potential key target that influences the anti-tumor activity of ginsenosides. Furthermore, by applying affinity mass spectrometry (MS) screening and surface plasmon resonance fragment library screening, we confirmed that 20()-protopanaxatriol directly targeted adjacent regions of the P53 DNA-binding pocket and promoted the stability of P53-DNA interactions, which further induced a series of omics changes.