PURPOSE: To evaluate the potential use of decellularized porcine stromal matrix (PSM) for reconstruction of corneal stroma in a rabbit model. METHODS: Ten chinchilla bastard rabbit corneas were exposed to a circular half-thickness keratotomy with a 3.0 mm diameter at the central cornea. Porcine corneas were decellularized using hypotonic tris buffer, ethylene diamine tetra-acetic acid (EDTA, 0.1%), aprotinin (10 K IU/ml) and 0.3% sodium dodecyl sulphate (SDS). The 3.0 mm in diameter decellularized corneal stromal xenograft was inserted into the pocket, and the incision was closed with four 10.0 nylon sutures. Clinical photographs were taken at day 1, day 7, day 30 and on a monthly basis for up to 6 months after transplantation. Six months after surgery, the rabbits were killed and eyes were enucleated. Haematoxylin-eosin (HE) and 4,6-diamidino-2-phenylindole (DAPI) staining were performed to confirm the complete removal of the corneal cells after decellularization of porcine corneas and repopulation with rabbit cells. Alcian blue staining was performed for analysing the structure of the extracellular matrix (ECM). RESULTS: Efficient elimination of porcine cells was achieved by our decellularization protocol and confirmed via HE and DAPI stainings. Moreover, the major histoarchitectural ECM structure had been maintained as visualized by the alcian blue stain. Finally, the PSM was biocompatible with the host's epithelium evidenced as a regrowth covering the exposed xenograft. CONCLUSIONS: This novel technique of tissue engineering may provide one of many solutions to addressing anterior corneal pathological conditions in the face of a shortage of human corneal material.
PURPOSE: To evaluate the potential use of decellularized porcine stromal matrix (PSM) for reconstruction of corneal stroma in a rabbit model. METHODS: Ten chinchilla bastard rabbit corneas were exposed to a circular half-thickness keratotomy with a 3.0 mm diameter at the central cornea. Porcine corneas were decellularized using hypotonictris buffer, ethylene diamine tetra-acetic acid (EDTA, 0.1%), aprotinin (10 K IU/ml) and 0.3% sodium dodecyl sulphate (SDS). The 3.0 mm in diameter decellularized corneal stromal xenograft was inserted into the pocket, and the incision was closed with four 10.0 nylon sutures. Clinical photographs were taken at day 1, day 7, day 30 and on a monthly basis for up to 6 months after transplantation. Six months after surgery, the rabbits were killed and eyes were enucleated. Haematoxylin-eosin (HE) and 4,6-diamidino-2-phenylindole (DAPI) staining were performed to confirm the complete removal of the corneal cells after decellularization of porcine corneas and repopulation with rabbit cells. Alcian blue staining was performed for analysing the structure of the extracellular matrix (ECM). RESULTS: Efficient elimination of porcine cells was achieved by our decellularization protocol and confirmed via HE and DAPI stainings. Moreover, the major histoarchitectural ECM structure had been maintained as visualized by the alcian blue stain. Finally, the PSM was biocompatible with the host's epithelium evidenced as a regrowth covering the exposed xenograft. CONCLUSIONS: This novel technique of tissue engineering may provide one of many solutions to addressing anterior corneal pathological conditions in the face of a shortage of human corneal material.
Authors: Mohammad Mirazul Islam; Roholah Sharifi; Shamina Mamodaly; Rakibul Islam; Daniel Nahra; Dina B Abusamra; Pui Chuen Hui; Yashar Adibnia; Mehdi Goulamaly; Eleftherios I Paschalis; Andrea Cruzat; Jing Kong; Per H Nilsson; Pablo Argüeso; Tom Eirik Mollnes; James Chodosh; Claes H Dohlman; Miguel Gonzalez-Andrades Journal: Acta Biomater Date: 2019-07-05 Impact factor: 8.947
Authors: Ghasem Yazdanpanah; Zeeshan Haq; Kai Kang; Sayena Jabbehdari; Mark L Rosenblatt; Ali R Djalilian Journal: Ocul Surf Date: 2019-01-08 Impact factor: 5.033
Authors: Martina Nemcokova; Jakub Dite; Yun Min Klimesova; Magdalena Netukova; Pavel Studeny Journal: Cell Tissue Bank Date: 2022-02-06 Impact factor: 1.522