Interpenetrating Network of Alginate–Human Adipose Extracellular Matrix Hydrogel for Islet Cells Encapsulation
Jun Kit Wang
School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore, 639798 Singapore
Search for more papers by this authorNicole Mein Ji Cheam
School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore, 639798 Singapore
Search for more papers by this authorScott Alexander Irvine
School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore, 639798 Singapore
Search for more papers by this authorNguan Soon Tan
School of Biological Sciences, Nanyang Technological University Singapore, 60 Nanyang Drive, Singapore, 637551 Singapore
Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 11 Mandalay Road, Singapore, 308232 Singapore
Search for more papers by this authorSubbu Venkatraman
Department of Materials Science and Engineering, National University of Singapore, Blk EA, 9 Engineering Drive 1, Singapore, 117575 Singapore
Search for more papers by this authorCorresponding Author
Chor Yong Tay
School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore, 639798 Singapore
School of Biological Sciences, Nanyang Technological University Singapore, 60 Nanyang Drive, Singapore, 637551 Singapore
Environmental Chemistry and Materials Centre, Nanyang Environment and Water Research Institute, 1 CleanTech Loop, CleanTech One, Singapore, 637141 Singapore
Search for more papers by this authorJun Kit Wang
School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore, 639798 Singapore
Search for more papers by this authorNicole Mein Ji Cheam
School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore, 639798 Singapore
Search for more papers by this authorScott Alexander Irvine
School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore, 639798 Singapore
Search for more papers by this authorNguan Soon Tan
School of Biological Sciences, Nanyang Technological University Singapore, 60 Nanyang Drive, Singapore, 637551 Singapore
Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 11 Mandalay Road, Singapore, 308232 Singapore
Search for more papers by this authorSubbu Venkatraman
Department of Materials Science and Engineering, National University of Singapore, Blk EA, 9 Engineering Drive 1, Singapore, 117575 Singapore
Search for more papers by this authorCorresponding Author
Chor Yong Tay
School of Materials Science and Engineering, Nanyang Technological University Singapore, N4.1, 50 Nanyang Avenue, Singapore, 639798 Singapore
School of Biological Sciences, Nanyang Technological University Singapore, 60 Nanyang Drive, Singapore, 637551 Singapore
Environmental Chemistry and Materials Centre, Nanyang Environment and Water Research Institute, 1 CleanTech Loop, CleanTech One, Singapore, 637141 Singapore
Search for more papers by this authorAbstract
Transplantation of microencapsulated islet cells holds great potential for the treatment of type 1 diabetes mellitus. However, its clinical translation is hampered by the peri-transplantation loss of islet viability and functionality in the microcapsules. In this work, a novel islet cells biomimetic microencapsulant material that is based on the interpenetrating networks of alginate and extracellular matrix (ECM) hydrogel composite (AEC) is presented. The ECM component is derived from human lipoaspirate. In situ encapsulation of pancreatic β islet cells (MIN6 β-cells) can be achieved via ionotropic gelation of the alginate matrix and thermal-induced gelation of the pepsin-solubilized ECM pre-gel. Due to the enhanced cell–matrix interaction, islets encapsulated within the AEC microcapsules (≈640 µm) display sevenfold increase in cell growth over 1 week of culture and characteristic glucose-stimulated insulin response in vitro. The results show that the AEC microcapsule is a potent platform to bioaugment the performance of islet cells.
Conflict of Interest
The authors declare no conflict of interest.
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