Principles of regenerative medicine: Current perspectives, challenges, and future prospects

Abstract

Regenerative medicine represents a rapidly advancing interdisciplinary field that aims to restore the structure and function of damaged tissues through the integration of cell-based therapies, biomaterials, tissue engineering, gene therapy, bioactive molecules, and biophysical stimulation. In veterinary, regenerative approaches have gained considerable attention for the management of orthopaedic, neurological, dermatological, renal, and ophthalmic disorders where conventional therapies often provide only symptomatic relief. This review outlines the fundamental principles of regenerative medicine, including cellular therapy using mesenchymal stem cells and pluripotent stem cells, scaffold-based tissue regeneration, growth factor and extracellular vesicle–mediated signaling, tissue engineering strategies, gene therapy, biophysical stimulation, immunomodulation, and activation of endogenous repair mechanisms. Together, these principles aim to enhance innate healing responses or supplement them with bioengineered components to achieve functional tissue restoration. The review also highlights the major challenges limiting clinical translation, such as variability in cell sources and protocols, limited cell survival and engraftment, safety concerns, regulatory and ethical constraints, high treatment costs, and the lack of standardized guidelines and long-term clinical trials in veterinary species. Furthermore, emerging trends including cell-free therapies, gene-edited stem cells, smart biomaterials, three-dimensional bioprinting, and personalized regenerative strategies are discussed as promising solutions to overcome existing limitations. Overall, regenerative medicine holds significant potential to transform veterinary therapeutics, provided that scientific, regulatory, and translational challenges are systematically addressed through robust research and standardized clinical practices.