CD95L concatemers highlight different stoichiometries of CD95‐mediated apoptotic and nonapoptotic pathways

This is the authors' abstract. We don't add key points for this paper.

To better understand the stoichiometry of CD95L required to trigger apoptotic and nonapoptotic signals, we generated several CD95L concatemers from dimer to hexamer conjugated via a flexible link (GGGGS) 2 . These ligands reveal that although the hexameric structure is the best stoichiometry to trigger cell death, a dimer is sufficient to induce the apoptotic response in CD95‐sensitive Jurkat cells. Interestingly, only trimeric and hexameric forms can implement a potent Ca 2+ response, suggesting that while CD95 aggregation controls the implementation of the apoptotic signal, both aggregation and conformation are required to implement the Ca 2+ pathway.