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10.18632/oncotarget.15166

http://scihub22266oqcxt.onion/10.18632/oncotarget.15166
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C5370004!5370004!28187433
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suck abstract from ncbi


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pmid28187433      Oncotarget 2017 ; 8 (10): 16829-42
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  • Doxycycline directly targets PAR1 to suppress tumor progression #MMPMID28187433
  • Zhong W; Chen S; Zhang Q; Xiao T; Qin Y; Gu J; Sun B; Liu Y; Jing X; Hu X; Zhang P; Zhou H; Sun T; Yang C
  • Oncotarget 2017[Mar]; 8 (10): 16829-42 PMID28187433show ga
  • Doxycycline have been reported to exert anti-cancer activity and have been assessed as anti-cancer agents in clinical trials. However, the direct targets of doxycycline in cancer cells remain unclear. In this study, we used a chemical proteomics approach to identify the Protease-activated receptor 1 (PAR1) as a specific target of inhibition of doxycycline. Binding assays and single-molecule imaging assays were performed to confirm the inhibition of doxycycline to PAR1. The effect of doxycycline on multi-omics and cell functions were assessed based on a PAR1/thrombin model. Molecular docking and molecular dynamic simulations revealed that doxycycline interacts with key amino acids in PAR1. Mutation of PAR1 further confirmed the computation-based results. Moreover, doxycycline provides highly selective inhibition of PAR1 signaling in tumors in vitro and in vivo. Using pathological clinical samples co-stained for doxycycline and PAR1, it was found that doxycycline fluorescence intensity and PAR1 expression shown a clear positive correlation. Thus, doxycycline may be a useful targeted anti-cancer drug that should be further investigated in clinical trials.
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