Analysis of polarized human primary renal epithelial cells in a transwell system shows that vectorial secretion of the pro-fibrotic protein CTGF depends on the cell type, the stimulus and the signaling pathway activated. In all conditions, CTGF was secreted mainly to the apical side upon TGF-β and LPA treatment and therefore, likely contributes to increased urinary CTGF levels in vivo. Moreover, CTGF secreted basolaterally may be active as paracrine pro-fibrotic mediator.
Pedro García FernándezJ. María SalgueroJ. Manuel MartínezPedro PasiónAntonio Martínez‐SabaterRafael MachucaFrancisco Javier GravalosaPedro Martínez GarcíaMiguel A. Portillo
Miquel Pons i CabrafigaHumberto Ferrer Escobar
Alfonso Blanco NespereiraAssumpta Enseñat Solé
Consuelo EscuderoSònia González