The global effort to control and cure HIV has catalyzed some of the most transformative innovations in modern biomedicine. From gene-edited immune cells and engineered antibodies to programmable nanomedicine and systems-level therapeutic modeling, HIV research has evolved into a living laboratory for immuno-engineering. In this final article of the Frontières Thérapeutiques series, I explore how the conceptual and technological frameworks developed in the context of HIV transcend the virus itself. I argue that HIV cure research has laid the foundations for a new therapeutic paradigm, one in which diseases are addressed not merely by targeting pathogens or tumors, but by reprogramming immune systems as adaptive, engineered entities. This paradigm carries profound implications for chronic infectious diseases, oncology, and the future of precision medicine. Keywords : Immuno-engineering,HIV cure research,Therapeutic paradigm, Scientific legacy,Translational medicine,CAR-T cells,Gene editing,Therapeutic vaccines,Systems medicine,Programmable therapeutics,Oncology,Chronic infectious diseases,Precision medicine, Immune reprogramming,Biomedical innovation