The invention provides a lipid of general formula (I) or (II):
wherein X
1
, X
2
and R
1
to R
5
are as defined herein. Such lipids are used to form complexes with a biologically-active material such as a nucleic acid, peptide or small molecule for delivering the biologically-active material to cells. The complexes may incorporate an integrin-binding peptide and, when the biologically-active material is DNA, thereby constitute a LID complex.
该发明提供了一种通式为(I)或(II)的脂质:其中,X1、X2和R1至R5的定义如本文所述。这些脂质用于与
生物活性物质,如核酸、肽或小分子形成复合物,以将
生物活性物质传递到细胞内。这些复合物可以包含整合素结合肽,并且当
生物活性物质为DNA时,因此构成LID复合物。