Complement Component 3 expressed by the endometrial ectopic tissue is involved in the endometriotic lesion formation through mast cell activation
Agostinis, C.; Zorzet, S.; Balduit, A.; Zito, G.; Mangogna, A.; Macor, P.; Romano, F.; Toffoli, M.; Belmonte, B.; Martorana, A.; Borelli, V.; Ricci, G.; Kishore, U.; Bulla, R.
Show abstract
The pathophysiology of endometriosis (EM) is an excellent example of immune dysfunction, reminiscent of tumor microenvironment as well. Here, we report that an interplay between C3 and mast cells (MCs) is involved in the pathogenesis of ectopic EM. C3 is at the epicenter of the regulatory feed forward loop, amplifying the inflammatory microenvironment, in which the MCs are protagonists. Thus, C3 can be considered a marker of EM and its local synthesis can promote the engraftment of the endometriotic cysts. We generated a murine model of EM via injection of minced uterine tissue from a donor mouse, into the peritoneum of the recipient mice. The wild type mice showed greater amount of cyst formation in the peritoneum compared to C3 knock-out mice. This study offers an opportunity for novel therapeutic intervention in EM, a difficult to treat gynecological condition. SummaryC3 produced by the endometriotic tissue is involved in the lesion development through mast cell activation
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