Description: Fusogen is a biological substance that plays a crucial role in the fusion of cells or cellular components. This fusion process is essential in various biological functions, such as the formation of tissues and organs, as well as in the immune response of the organism. Fusogens can be proteins, lipids, or other molecules that facilitate the joining of cell membranes, allowing the contents of the cells to mix. In the context of cell biology, the study of fusogens has become relevant for better understanding the mechanisms of cell fusion and its application in cell therapy and tissue engineering. The identification and characterization of fusogens are fundamental for the development of innovative treatments in regenerative medicine and in the research of diseases that involve alterations in cell fusion, such as certain types of cancer and genetic disorders. Furthermore, the analysis of fusogens can provide valuable information about the evolution of cells and their interaction in multicellular environments, which is essential for the advancement of synthetic biology and biotechnology.