Beyond Cryptobiosis: Biotechnological Frontiers of Tardigrades

Beyond enabling survival in extreme environments, tardigrades open new avenues for innovation across scientific fields. This review examines the physiological and molecular mechanisms underlying tardigrade tolerance, namely cryptobiosis, damage-suppressor proteins, intrinsically disordered proteins, trehalose accumulation, and robust DNA repair pathways. Furthermore, it highlights their potential applications in cryopreservation, radioprotection, astrobiology, biotechnology, and medicine. In cryobiology, tardigrade-derived molecules offer strategies to improve the viability of cells, tissues, and organs during freezing and thawing. Their natural radioprotective mechanisms may inform the development of novel cancer therapies and advanced shielding materials. Insights into tardigrade survival in the vacuum of space provide valuable models for life-support systems and planetary protection in long-duration missions. Moreover, engineering tardigrade proteins into microbial or human cells holds promise for enhanced stress tolerance in industrial bioprocessing and therapeutic contexts. By unravelling these unique survival strategies, researchers can leverage tardigrades as a blueprint for designing next-generation solutions to pressing challenges in human health, food security, and space exploration.