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- W2588786207 abstract "The most common vision-disrupting complication of cataract surgery is posterior capsule opacification (PCO; secondary cataract). PCO is caused by residual lens cells undergoing one of two very different cell fates: either transdifferentiating into myofibroblasts or maturing into lens fiber cells. Although TGFβ has been strongly implicated in lens cell fibrosis, the factors responsible for the latter process have not been identified. We show here for the first time that TGFβ can induce purified primary lens epithelial cells within the same culture to undergo differentiation into either lens fiber cells or myofibroblasts. Marker analysis confirmed that the two cell phenotypes were mutually exclusive. Blocking the p38 kinase pathway, either with direct inhibitors of the p38 MAP kinase or a small-molecule therapeutic that also inhibits the activation of p38, prevented TGFβ from inducing epithelial–myofibroblast transition and cell migration but did not prevent fiber cell differentiation. Rapamycin had the converse effect, linking MTOR signaling to induction of fiber cell differentiation by TGFβ. In addition to providing novel potential therapeutic strategies for PCO, our findings extend the so-called TGFβ paradox, in which TGFβ can induce two disparate cell fates, to a new epithelial disease state." @default.
- W2588786207 created "2017-02-24" @default.
- W2588786207 creator A5007690082 @default.
- W2588786207 creator A5010732403 @default.
- W2588786207 creator A5020091191 @default.
- W2588786207 creator A5071984892 @default.
- W2588786207 date "2017-04-01" @default.
- W2588786207 modified "2023-10-16" @default.
- W2588786207 title "Dual function of TGFβ in lens epithelial cell fate: implications for secondary cataract" @default.
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