Fig. 4

Upregulating CXCR7 expression activated the Akt-associated Keap-1/Nrf2 axis. a Levels of p-Akt, Keap-1, n-Nrf2, HO-1, and NQO-1. b Expression of HO-1 and NQO-1 after blockade of Nrf2 (*p < 0.05; **p < 0.001)