METHOD FOR TARGETING SPECIFIC CELL POPULATION USING CELL-BINDING AGENT MAYTANSINOID CONJUGATE LINKED VIA NON-CLEAVABLE LINKER, CONJUGATE AND METHOD OF MAKING CONJUGATE
PROBLEM TO BE SOLVED: To provide a method for directing a highly cytotoxic maytansinoid towards a target cell population such as cancer.SOLUTION: The method for directing maytansinoid to a cell population uses, for example, a cell-binding agent maytansinoid conjugate obtained by covalently linking a cell binding agent and a maytansinoid derivative modified with a non-sulfur-containing non-cleavable linker represented by formula 7, wherein R is H or SONa.【課題】高い細胞毒性のあるメイタンシノイドを、標的とする癌の様な細胞集団に向かわせるための方法の提供。【解決手段】例えば式7で表わされる硫黄を含有しない非開裂リンカーで修飾したメイタンシノイド誘導体と、細胞結合物質とを共有結合させることにより得られる細胞結合物質-メイタンシノイド複合体を使用する。[RはH又はSO3Na+]【選択図】なし