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. 2022 Mar 28;18(7):2795–2806. doi: 10.7150/ijbs.71595

Figure 3.

Figure 3

Smad3 triggers the cell death pathways in acute kidney injury. Smad3 can bind and activate the p21/p27 to cause tubular epithelial cell death via the G1 cell-cycle arrest mechanism in response to TGF-β1 and CRP under various kidney disease conditions. Red arrows/symbols represent pathogenic or positive regulation pathway, while blue lines/symbols indicate protective or negative regulation pathways.