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. 2021 Oct 13;12(10):942. doi: 10.1038/s41419-021-04249-8

Fig. 6. The interaction of GRP78 with S100A16 releases IRE1α in HK-2 cells.

Fig. 6

A Immunoprecipitation (IP) analysis demonstrating an interaction between GRP78 and IRE1α as well as GRP78 and S100A16 after treatment with BAPTA-AM (10 μM) in normal and S100A16-overexpressing HK-2 cells. B Quantitation of IRE1α and S100A16 protein expression in A, normalized to GRP78 expression. Bars are means ± SE from four independent experiments. *P < 0.05, **P < 0.01, ***P < 0.001. C Schematic of the interaction between S100A16 and GRP78 and activation of endoplasmic reticulum stress-mediated through the IRE1α/XBP1 pathway in renal tubulointerstitial fibrosis.