The coiled-coil protein carrier structure affects the activation of certain endocytosis pathways.

Coiled-coil protein carrier (CCPC) 140 is a rigid and anisotropically structured cationic coiled-coil artificial protein that has displayed up to a 1000 times higher level of cellular internalization activity than that of unstructured cell-penetrating peptides. Previous studies have demonstrated that CCPC 140's rigid and anisotropic structural properties and cationic surface properties are important for its superior cellular internalization activity. In this study, we investigated whether each physicochemical characteristic of CCPC 140 effectively contributed to activating the cellular internalization pathway.

Shape-dependent adjuvanticity of nanoparticle-conjugated RNA adjuvants for intranasal inactivated influenza vaccines.

Intranasal inactivated influenza vaccines can elicit mucosal immune responses that protect against virus infection. For the development of intranasal inactivated influenza vaccines, effective adjuvants inducing minimal adverse reactions are required. Generally, however, lower toxicity adjuvants have lower adjuvanticity.