The present application provides PEI compounds comprising a linker, PEI-polypeptide conjugates (e.g., PEI-antibody conjugates), and complexes thereof comprising a biologically active molecule. Methods of preparing and using the compounds, conjugates and complexes are further provided. The PEI-polypeptide conjugates and complexes are useful for delivering biologically active molecules to the cytoplasm of cells and promoting release of the biologically active molecules from the endo-lysosomal pathway.
本申请提供了包含连接剂的PEI化合物,PEI-
多肽结合物(例如PEI-
抗体结合物)以及包含
生物活性分子的复合物。此外还提供了制备和使用这些化合物、结合物和复合物的方法。PEI-
多肽结合物和复合物可用于将
生物活性分子传递到细胞质并促进其从内质网溶酶体途径中释放。