Construction of cavernosum smooth muscle using umbilical artery smooth muscle cells seeded on acellular corporal collagen matrices

International Journal of Andrology
Lu-Jie SongXiao-Yong Hu

Abstract

The objective of this study was to investigate the feasibility of tissue engineering of corpus cavernosal smooth muscle. Acellular corporal collagen matrices (ACCMs) were obtained from the penis of adult rabbits by a cell removal procedure. ACCMs were implanted into the back muscles of allogenic rabbits to investigate the resulting immunological reaction. Human umbilical artery smooth muscle cells (HUASMCs) were isolated from human umbilical arteries through explant techniques and expanded in vitro. Subsequently, third and fifth passage HUASMCs were seeded to ACCMs at a concentration of 30 x 10(6) cells/mL. Then, seeded ACCMs were implanted subcutaneously in athymic mice. The implants were retrieved at 10, 20 and 40 days after implantation. Histochemistry, immunohistochemistry and scanning electron microscopy were performed to analyse the morphological characteristics of the engineered tissues. Additionally, organ bath studies were performed to address the contractility of the engineered tissues. The decellularization process successfully extracted all cellular components while preserving the original collagen fibers. The immunological reaction to ACCMs consisted of only a transient nonspecific inflammatory response. Light and ...Continue Reading

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