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10.1016/j.bbrc.2021.01.104

http://scihub22266oqcxt.onion/10.1016/j.bbrc.2021.01.104
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33578295!7857081!33578295
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suck abstract from ncbi


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pmid33578295      Biochem+Biophys+Res+Commun 2021 ; 546 (ä): 97-102
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  • Age-dependent effects of the recombinant spike protein/SARS-CoV-2 on the M-CSF- and IL-34-differentiated macrophages in vitro #MMPMID33578295
  • Duarte C; Akkaoui J; Ho A; Garcia C; Yamada C; Movila A
  • Biochem Biophys Res Commun 2021[Mar]; 546 (ä): 97-102 PMID33578295show ga
  • The SARS-CoV-2 virus causes elevated production of senescence-associated secretory phenotype (SASP) markers by macrophages. SARS-CoV-2 enters macrophages through its Spike-protein aided by cathepsin (Cat) B and L, which also mediate SASP production. Since M-CSF and IL-34 control macrophage differentiation, we investigated the age-dependent effects of the Spike-protein on SASP-related pro-inflammatory-cytokines and nuclear-senescence-regulatory-factors, and CatB, L and K, in mouse M-CSF- and IL-34-differentiated macrophages. The Spike-protein upregulated SASP expression in young and aged male M-CSF-macrophages. In contrast, only young and aged male IL-34-macrophages demonstrated significantly reduced pro-inflammatory cytokine expression in response to the Spike-protein in vitro. Furthermore, the S-protein elevated CatB expression in young male M-CSF-macrophages and young female IL-34-macrophages, whereas CatL was overexpressed in young male IL-34- and old male M-CSF-macrophages. Surprisingly, the S-protein increased CatK activity in young and aged male M-CSF-macrophages, indicating that CatK may be also involved in the COVID-19 pathology. Altogether, we demonstrated the age- and sex-dependent effects of the Spike-protein on M-CSF and IL-34-macrophages using a novel in vitro mouse model of SARS-CoV-2/COVID-19.
  • |*Age Factors[MESH]
  • |Animals[MESH]
  • |Cathepsins/metabolism[MESH]
  • |Cell Differentiation[MESH]
  • |Cellular Senescence[MESH]
  • |Cytokines/metabolism[MESH]
  • |Female[MESH]
  • |Interleukins[MESH]
  • |Macrophage Colony-Stimulating Factor[MESH]
  • |Macrophages/cytology/*virology[MESH]
  • |Male[MESH]
  • |Mice[MESH]
  • |Mice, Inbred C57BL[MESH]
  • |Recombinant Proteins/pharmacology[MESH]
  • |SARS-CoV-2[MESH]
  • |Sex Factors[MESH]


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