प्रत्यारोपण प्रौद्योगिकी एवं अनुसंधान

Mechanisms of Angiogenesis Process after Pancreatic Islet Cell Transplantation: Role of Intra-islet Endothelial Cells

Abstract

Siddharth Narayanan, Gopalakrishnan Loganathan, Maheswaran Dhanasekaran, William Tucker, Ankit Patel, Venugopal Subhashree, Sri Prakash Mokshagundam, Michael J Hughes, Stuart K Williams and Appakalai N Balamurugan

Angiogenic sprouting is a complex, multi-step process involving highly integrated cell behaviours, initial interaction with the environment and signalling pathways. Endothelial cells (ECs) are central to the angiogenic process, with recent insights establishing how these cells communicate with each other and with their microenvironment to form branched vascular networks. Using pancreatic islets as a model for vascularized tissue, this review will present a general overview of EC behaviour dynamics in sprouting angiogenesis, particularly focusing on the interplay between VEGF and Notch pathways. A better understanding of molecular mechanisms associated with intra-islet EC cross-talk and its micro-environment may present exciting new perspectives on islet graft to host revascularization and in supporting islet graft survival.