New use of brassinolide in reversing multiple medicine resistance of tumour cell

The present invention relates to the new use of brassinolide in reversing the resistance of tumor cell to multiple medicines. Brassinolide has powerful bioactivity, is safe and non-toxic. At very low concentration, brassinolide itself has no tumor inhibiting effect and can reverse the resistance of tumor cell with high resistance to multiple medicines. 本发明涉及一种油菜素内酯逆转肿瘤细胞多药抗药性的新用途。其特征为油菜素内酯逆转肿瘤细胞多药抗药性的新用途。油菜素内酯具有很强的生物活性，安全，无毒，油菜素内酯在本身没有抑瘤作用的很低浓度下，有效地逆转高度耐药的肿瘤细胞耐药性。