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Journal Article
Research Support, Non-U.S. Gov't
Reconstruction of functional endometrium-like tissue in vitro and in vivo using cell sheet engineering.
Biochemical and Biophysical Research Communications 2014 March 29
Uterus is a female specific reproductive organ and plays critical roles in allowing embryo to grow. Therefore, the endometrial disorders lead to female infertility. Hence, the regeneration of endometrium allowing fertilized ovum to implant might be valuable in the field of fertility treatment. Recently, cell sheet engineering using a temperature-responsive culture dish has advanced in regenerative medicine. With this technology, endometrial cells were harvested as a contiguous cell sheet by reducing temperature. Firstly, mouse endometrial cell sheets were re-cultured for 3 days to evaluate the function. Histological analyses revealed that endometrial epithelial cell-specific cytokeratin 18 and female-specific hormone receptors, estrogen receptor β and progesterone receptor, were expressed. Furthermore, endometrial epithelial cells constructed epithelial layer at the apical side. Then, endometrial cell sheets from green-fluorescent-protein rat cells were transplanted onto the buttock muscle of nude rat for evaluating the function in vivo. Histological analyses showed that endometrial cell sheets reconstructed endometrium-like tissue, which was found to form uterus-specific endometrial glands having hormonal receptor to estrogen. In this study, endometrial cell sheets were speculated to contribute to the regeneration of functional endometrium as a new therapy.
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