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FIGURE 8 - Slit diaphragm protein Neph1 and its signaling: A novel therapeutic target for protection of podocytes against glomerular injury
![FIGURE 8. Podocytes overexpressing Neph1 are resistant to PAN-induced injury. A, schematic representation of the construction of Cherry-Neph1 construct (where Cherry was introduced after the transmembrane domain and before any potential tyrosine phosphorylation sites in Neph1) is shown. B, expression pattern of Cherry-Neph1 was similar to endogenous Neph1 in podocytes, where both proteins localized at the cell-cell junctions (arrows). C, podocytes without and with stable expression of Cherry-Neph1 were created and subjected to PAN treatment for 48 h. Unlike the control cells transfected with empty vector, the Cherry-Neph1-transfected cells were resistant to PAN-induced cytoskeletal damage, and their cell-cell junctions were well maintained. D, BSA permeability assay was performed with vector-transfected (control) and Cherry-Neph1-overexpressing podocytes that were cultured as a monolayer on Transwell filters and treated with PAN. The passage of albumin across the podocytes monolayer was assessed by a paracellular albumin flux assay using Texas red-labeled albumin. The Cherry-Neph1-overexpressing cells showed increased resistance to PAN-induced albumin leakage as compared with control podocytes . ns, nonsignificant. Scale bar, 20 m (B); 10 m (C).](https://www.researchgate.net/profile/Ashish-Ashish-2/publication/260272010/figure/fig7/AS:392515485224974@1470594392702/Podocytes-overexpressing-Neph1-are-resistant-to-PAN-induced-injury-A-schematic_Q320.jpg)
Podocytes overexpressing Neph1 are resistant to PAN-induced injury. A, schematic representation of the construction of Cherry-Neph1 construct (where Cherry was introduced after the transmembrane domain and before any potential tyrosine phosphorylation sites in Neph1) is shown. B, expression pattern of Cherry-Neph1 was similar to endogenous Neph1 in podocytes, where both proteins localized at the cell-cell junctions (arrows). C, podocytes without and with stable expression of Cherry-Neph1 were created and subjected to PAN treatment for 48 h. Unlike the control cells transfected with empty vector, the Cherry-Neph1-transfected cells were resistant to PAN-induced cytoskeletal damage, and their cell-cell junctions were well maintained. D, BSA permeability assay was performed with vector-transfected (control) and Cherry-Neph1-overexpressing podocytes that were cultured as a monolayer on Transwell filters and treated with PAN. The passage of albumin across the podocytes monolayer was assessed by a paracellular albumin flux assay using Texas red-labeled albumin. The Cherry-Neph1-overexpressing cells showed increased resistance to PAN-induced albumin leakage as compared with control podocytes . ns, nonsignificant. Scale bar, 20 m (B); 10 m (C).
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