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. 2023 Nov 8;9(45):eadg8138. doi: 10.1126/sciadv.adg8138

Fig. 8. The biomechanical stimulus and matrix stiffness regulate the expression of collagen cross-link enzymes (LOX and LH) through Piezo1.

Fig. 8.

(A) Protein and mRNA levels of LOX and LH in human SMSCs after static or CTS treatment [(A1) the Western blot analysis; (A2) the semiquantitative analysis of LOX, n = 3, unpaired t test; (A3) the semiquantitative analysis of LH2, n = 3, unpaired t test; (A4) the cell immunofluorescence of LOX; (A5) the semiquantitative analysis of LOX immunofluorescence, n = 6, unpaired t test; (A6) the cell immunofluorescence of LH2; (A7) the semiquantitative analysis of LH2 immunofluorescence, n = 6, unpaired t test; (A8) the mRNA levels, n = 8, unpaired t test]. (B) Protein and mRNA levels of LOX and LH in human SMSCs after being treated with YODA1 or GsMTx-4 [(B1) the Western blot analysis; (B2) the semiquantitative analysis of LOX, n = 3, one-way ANOVA; (B3) the semiquantitative analysis of LH2, n = 3, one-way ANOVA; (B4) the cell immunofluorescence of LOX; (B5) the semiquantitative analysis of LOX immunofluorescence, n = 6, one-way ANOVA; (B6) the cell immunofluorescence of LH2; (B7) the semiquantitative analysis of LH2 immunofluorescence, n = 6, one-way ANOVA; (B8) the mRNA levels, n = 8, one-way ANOVA]. (C) Protein and mRNA levels of LOX and LH in human SMSCs after being treated with soft or stiff matrix [(C1) the Western blot analysis; (C2) the semiquantitative analysis of LOX, n = 3, unpaired t test; (C3) the semiquantitative analysis of LH2, n = 3, unpaired t test; (C4) the mRNA levels, n = 8, unpaired t test]. (D) Immunofluorescent assessment of LOX expression in regenerated tissue of PCL scaffold + synovium transplant group and native porcine menisci. (E) Immunofluorescent assessment of LH2 expression in regenerated tissue of PCL scaffold + synovium transplant group and native porcine menisci. *P < 0.05, **P < 0.01, ***P < 0.0005, ****P < 0.0001; ns, not significant.