Research Paper Volume 13, Issue 11 pp 15193—15213

TRDMT1 participates in the DNA damage repair of granulosa cells in premature ovarian failure


Figure 1.

Reduced TRDMT1 is associated with decreased ovarian function. (A) Histopathological examination of the ovaries of the WT, POF-PBS and POF-BMSCs groups. Scale bar: 100 μm. (B) Primordial follicles, primary follicles, secondary follicles, and atretic follicles were observed. (A) Transmission electron microscopy analysis of the ovarian structures in each group of mice. Scale bar: 2μm. (A) Apoptosis of GCs in ovaries was measured by TUNEL staining. Representative images of terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining show apoptotic GCs in each group. The TUNEL-positive apoptotic cells are indicated by green fluorescence. The nuclei (blue) were stained with DAPI. Scale bar: 100μm. (A) Representative immunohistochemical images of TRDMT1 in each group. Brown staining represents a positive TRDMT1 signal. Scale bar: 100μm. (C) Representative immunofluorescent staining of TRDMT1 in GCs from women with normal ovarian function and from patients with POF. Nuclei were stained with DAPI. Scale bar: 50μm. (D) TRDMT1 expression in the serum of healthy people and patients with POF was detected by Western blotting. An anti-Tubulin antibody was used as a loading control. *p<0.05, **P<0.01, and ***P<0.001. Statistical significance was determined using two-tailed t-tests for two groups and ANOVA for multiple comparisons. All values are means ± SD.