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. 2021 Jul 21;11:14863. doi: 10.1038/s41598-021-94365-4

Figure 6.

Figure 6

Pretreatment of hBMSC-derived exosome up-regulated the expression of matrix metalloproteinases in hTMCs when exposed to H2O2. HTMCs were pretreated with hBMSC-derived exosomes or PBS for 24 h, then exposed to H2O2 (0.1 mM) for 6 h, and a blank control group cultured with medium containing exosome-free serum. Then, hTMCs were assayed by RT-PCR to assess the mRNA expression of MMP-2 (a) and MMP-3 (c). Gene expression levels were normalized to GAPDH and presented as relative ratios. Total hTMC supernatants were analyzed for MMP-2 (b) and MMP-3 (d). n = 3 for each condition. A P value was obtained by a two-tailed unpaired t-test. *P < 0.05; **P < 0.01 compared to PBS + H2O2 group. #P < 0.05; ##P < 0.01 compared to control. Data were presented in Supplementary Tables S4 and S5.