Mesenchymal stem cells combined with polycaprolactone-hyaluronic acid electrospinning membrane in repair of endometrial injury

doi:10.12307/2025.429

Abstract

Abstract: BACKGROUND: Human endometrial mesenchymal stem cells can directly repair the damaged endometrium, promote angiogenesis, and restore the morphological structure of the uterus. However, after the direct injection of stem cells into the damaged endometrium, the cell survival rate is low, the retention time is short, and the repair effect is limited.
OBJECTIVE: To observe the effect of polycaprolactone-hyaluronic acid electrospinning membrane combined with human endometrial mesenchymal stem cells on endometrial injury in rats.
METHODS: (1) Cell experiment: Human endometrial mesenchymal stem cells were extracted by collagenase digestion method. Polycaprolactone-hyaluronic acid electrospinning membrane was prepared by electrospinning technology. The human endometrial mesenchymal stem cells were inoculated on polystyrene culture plate and polycaprolactone-hyaluronic acid electrospinning membrane. The proliferation and adhesion of the cells were observed by DNA quantitative analysis, WST-1 cell activity test, phalloidin staining, and scanning electron microscopy. The mRNA expressions of CD90 and Meflin in electrospun membrane were detected by qRT-PCR. (2) Animal experiments: 27 female SD rats in estrus were selected to establish uterine adhesion model by mechanical scratching method and randomly divided into three groups with nine rats in each group: The blank control group did not receive any treatment; the control group was implanted with polycaprolacton-hyaluronic acid electrospinning membrane; the experimental group was implanted with polycaprolacton-hyaluronic acid electrospinning membrane/human endometrial mesenchymal stem cell mesh. Samples were collected at 3, 7, and 14 days after surgery. Hematoxylin-eosin staining was used to observe the morphological structure of uterus and the number of glands. qRT-PCR and immunofluorescence staining were used to observe the expression of CD31 and vascular endothelial growth factor in uterine tissue.
RESULTS AND CONCLUSION: (1) Cell experiment: Compared with polystyrene culture plate, polycaprolactone-hyaluronic acid electrospinning membrane could promote the proliferation and adhesion of human endometrial mesenchymal stem cells. Polycaprolactone-hyaluronic acid electrospinning membrane supported the expression of CD90 and Meflin genes of human endometrial mesenchymal stem cells. (2) Animal experiments: Hematoxylin-eosin staining showed that polycaprolactic-hyaluronic acid electrospinning membrane/human endometrial mesenchymal stem cell patch could promote the recovery of endometrial morphological structure after injury. The endometrial thickness and number of gland on day 14 after surgery were higher than those in blank control group and control group (P < 0.05). qRT-PCR and immunofluorescence staining showed that the mRNA and protein expressions of CD31 and vascular endothelial growth factor in the experimental group were higher than those in the blank control group and the control group at 7 and 14 days after surgery (P < 0.05). (3) The results showed that polycaprolacton-hyaluronic acid electrospinning membrane could improve the survival rate of stem cells and prolong the contact time between stem cells and the damaged tissue, and the composite transplantation of the two could better repair the damaged endometrial tissue.

Key words: endometrium, intrauterine adhesion, human endometrial mesenchymal stem cell, electrospinning membrane, polycaprolactone, hyaluronic acid

CLC Number:

An Jiangru, Zhang Jinyi, Wang Qiuhua, Yang Yangyang, Wang Wenshuang, Zhang Xiaoqing. Mesenchymal stem cells combined with polycaprolactone-hyaluronic acid electrospinning membrane in repair of endometrial injury[J]. Chinese Journal of Tissue Engineering Research, 2025, 29(16): 3369-3379.

Figures/Tables 10

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