Ruimin Long1,2, Yuangang Liu1,3,2, Shibin Wang1,3,2, Li Ye1, Peng He1. 1. College of Chemical Engineering, Huaqiao University, Xiamen - China. 2. Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen - China. 3. Institute of Biomaterials and Tissue Engineering, Huaqiao University, Xiamen - China.
Abstract
INTRODUCTION: To overcome the shortcomings of pancreas transplantation and insulin injection treatment for type I diabetes, biocompatible materials were used to prepare alginate-chitosan-alginate microcapsules that co-encapsulated bone marrow mesenchymal stem cells and mouse pancreatic β cells to treat diabetic mice. METHODS: Blank alginate-chitosan-alginate (ACA) microcapsules and co-microencapsulated cells were prepared using a high-voltage electrostatic method and then characterized using an inverted microscope. Cell viability was evaluated using AO/EB staining. ELISA kit was used to detect insulin secretion. Peri-orbital blood samples were obtained from the mice for blood glucose determination every week for one month. RESULTS: After 28 days of in vitro culture, the secretion of insulin following co-microencapsulation was higher than that observed for microencapsulated beta-TC-6 cells alone. On the 28th day after transplantation, the blood glucose level was 6.86 mmol/L in the microencapsulated beta-TC-6 group. On the 14th day, the blood glucose level was 6.80 mmol/L in the co-microencapsulated BMSC/beta-TC-6 group, which was close to the normal blood glucose level of healthy mice. These results indicated that the efficacy in reducing blood glucose was better in the co-microencapsulated BMSC/beta-TC-6 group. CONCLUSIONS: This primary study indicated that combining microencapsulation technology and co-culture of stem cells and somatic cells shows promise for the treatment of type I diabetes mellitus.
INTRODUCTION: To overcome the shortcomings of pancreas transplantation and insulin injection treatment for type I diabetes, biocompatible materials were used to prepare alginate-chitosan-alginate microcapsules that co-encapsulated bone marrow mesenchymal stem cells and mousepancreatic β cells to treat diabeticmice. METHODS: Blank alginate-chitosan-alginate (ACA) microcapsules and co-microencapsulated cells were prepared using a high-voltage electrostatic method and then characterized using an inverted microscope. Cell viability was evaluated using AO/EB staining. ELISA kit was used to detect insulin secretion. Peri-orbital blood samples were obtained from the mice for blood glucose determination every week for one month. RESULTS: After 28 days of in vitro culture, the secretion of insulin following co-microencapsulation was higher than that observed for microencapsulated beta-TC-6 cells alone. On the 28th day after transplantation, the blood glucose level was 6.86 mmol/L in the microencapsulated beta-TC-6 group. On the 14th day, the blood glucose level was 6.80 mmol/L in the co-microencapsulated BMSC/beta-TC-6 group, which was close to the normal blood glucose level of healthy mice. These results indicated that the efficacy in reducing blood glucose was better in the co-microencapsulated BMSC/beta-TC-6 group. CONCLUSIONS: This primary study indicated that combining microencapsulation technology and co-culture of stem cells and somatic cells shows promise for the treatment of type I diabetes mellitus.
Authors: Sivanandane Sittadjody; Kevin M Enck; Alexandra Wells; James J Yoo; Anthony Atala; Justin M Saul; Emmanuel C Opara Journal: Ann Biomed Eng Date: 2019-07-31 Impact factor: 3.934
Authors: Gabriel Alexander Salg; Nathalia A Giese; Miriam Schenk; Felix J Hüttner; Klaus Felix; Pascal Probst; Markus K Diener; Thilo Hackert; Hannes Götz Kenngott Journal: J Tissue Eng Date: 2019-10-30 Impact factor: 7.813