It is intended to efficiently inject into a target cell, a substance charged within a liposome. The present inventors have found that connexin synthesized within a liposome is introduced as connexon having a gap junction function into the liposome membrane. Specifically, the liposome according to the present invention is a liposome in which connexon composed of connexin synthesized by an in-vitro protein synthesis system is incorporated in a state of having a gap junction function.
