Role of PTEN in neutrophil extracellular trap formation

S Teimourian, E Moghanloo - Molecular Immunology, 2015 - Elsevier
S Teimourian, E Moghanloo
Molecular Immunology, 2015Elsevier
NETosis has been associated with a particular mode of cell death although it is still
controversial as to what extent autophagy is involved in NETosis. Class I/AKT/mTOR
pathway is a key regulator of autophagy. PTEN tumor suppressor gene encodes a dual
specificity phosphatase that antagonizes the phosphatidylinositol 3-kinase in class the
I/AKT/mTOR pathway. In this study, we investigated the effects of PTEN down-regulation as
well as overexpression on NETosis. Our results show that 35% of HL-60 differentiated …
Abstract
NETosis has been associated with a particular mode of cell death although it is still controversial as to what extent autophagy is involved in NETosis. Class I/AKT/mTOR pathway is a key regulator of autophagy. PTEN tumor suppressor gene encodes a dual specificity phosphatase that antagonizes the phosphatidylinositol 3-kinase in class the I/AKT/mTOR pathway. In this study, we investigated the effects of PTEN down-regulation as well as overexpression on NETosis. Our results show that 35% of HL-60 differentiated neutrophil-like cells generated NETs by PMA. The portion of the population that produced NETs in PTEN knockdown HL-60 differentiated neutrophils was 9% and in PTEN overexpressed HL-60 differentiated neutrophils, it was 56%. Our results show that increasing PTEN expression increases NETs formation in neutrophils, and its suppression reduces NETs.
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