The invention provides a method for inhibiting an intracellular target in a cell with a bispecific antibody comprising contacting the cell with a bispecific antibody having a first Fv fragment with a cell-penetrating determinant and a second Fv fragment with an intracellular target-binding determinant under suitable conditions so that the first Fv fragment causes the bispecific antibody to enter the cell and the second Fv fragment binds the intracellular target in the cell and thereby inhibiting the intracellular target.
本发明提供了一种用双特异性
抗体抑制细胞内靶点的方法,该方法包括在适当的条件下,将具有带细胞穿透决定簇的第一Fv片段和带细胞内靶点结合决定簇的第二Fv片段的双特异性
抗体与细胞接触,使第一Fv片段使双特异性
抗体进入细胞,第二Fv片段与细胞内靶点结合,从而抑制细胞内靶点。