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. 2018 Jun 20;9(7):723. doi: 10.1038/s41419-018-0726-3

Fig. 8. Proposed mechanism responsible for autocrine CTRP9 of cardiomyocyte origin against MI/R injury.

Fig. 8

Briefly, CTRP9 binds to ER molecular chaperone CRT in the cytoplasm of cardiomyocyte under physiological conditions. When subjected to MI/R injury, CRT translocates to cell surface and associates with autocrine CTRP9. CTRP9–CRT complex activates PKA-CREB pro-survival signaling and inhibits ER stress-related apoptotic signaling, directly protecting against MI/R injury