%0 Journal Article %T Polypeptide- and Protein-Based Conjugate Nanoparticles via Aqueous Ring-Opening Polymerization-Induced Self-Assembly (ROPISA). %A Beauseroy H %A Grazon C %A Antoine S %A Badreldin M %A Salas-Ambrosio P %A Harrisson S %A Garanger E %A Lecommandoux S %A Bonduelle C %J Macromol Rapid Commun %V 45 %N 14 %D 2024 Jul 25 %M 38662380 %F 5.006 %R 10.1002/marc.202400079 %X Protein-polymer conjugates and polymeric nanomaterials hold great promise in many applications including biomaterials, medicine, or nanoelectronics. In this work, the first polymerization-induced self-assembly (PISA) approach performed in aqueous medium enabling protein-polymer conjugates and nanoparticles entirely composed of amino acids is presented by using ring-opening polymerization (ROP). It is indeed shown that aqueous ring-opening polymerization-induced self-assembly (ROPISA) can be used with protein or peptidic macroinitiators without prior chemical modification and afford the simple preparation of nanomaterials with protein-like property, for example, to implement biomimetic thermoresponsivity in drug delivery.