PROBLEM TO BE SOLVED: To induce cell death of cancer cells and inhibit cell proliferation of cancer cells.SOLUTION: An agent according to the present invention contains a drug for inhibiting both GST-π and MRPL17 as an active ingredient, or contains a drug for inhibiting GST-π and a drug for inhibiting MRPL17 as active ingredients.SELECTED DRAWING: Figure 1【課題】がん細胞に対して細胞死を誘導、細胞増殖を抑制する。【解決手段】GST-π及びMRPL17を抑制する薬物を有効成分として含む;又はGST-πを抑制する薬物と、MRPL17を抑制する薬物とを有効成分として含む。【選択図】図1