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. 2021 Dec 6;12(12):1134. doi: 10.1038/s41419-021-04418-9

Fig. 6. Stiffness potentiates tumor-promoting effects of HSCs through HSC E2F3.

Fig. 6

A HSC conditioned media (CMs) were used as stimulants for Hep3B proliferation assays. HSC 32 kPa CM promoted Hep3B proliferation as compared to 1 kPa CM. *p < 0.05 by ANOVA, n = 6. B HSC CMs were used as attractants for Hep3B cells in the Transwell assay. CM of HSCs on 32 kPa promoted Hep3B migration as compared with. that of HSCs on 1 kPa. *p < 0.05 by ANOVA, n = 3. C Recombinant FGF2 dose-dependently promoted Hep3B proliferation. *p < 0.05 by ANOVA, n = 4. D CM of HSCs on 32 kPa promoted Hep3B proliferation and this effect of 32 kPa CM was dose-dependently reduced by a neutralizing anti-FGF2 antibody. *p < 0.05 by ANOVA, n = 3. E The effects of HSC CM on Hep3B proliferation were abrogated by E2F3 knockdown in HSCs. *p < 0.05 by ANOVA, n = 5. F CMs were used as attractants in the Transwell assay. CM of control HSCs on 32 kPa promoted Hep3B cell migration as compared to that of control HSCs on 1 kPa, and this effect of 32 kPa CM was abrogated by E2F3 knockdown in HSCs. *p < 0.05 by ANOVA, n = 6. G Serum-starved Hep3B pretreated with a CM at 37 °C for 2 h were resuspended in the CM and Hep3B/CM were then co-injected into SCID mice subcutaneously. Tumor nodules were isolated and quantitated on day 10. *P < 0.05 by ANOVA, n = 5 per group. H Tumor lysates were subjected to WB for α-SMA and Collagen I. *P < 0.05 by ANOVA, n = 3.