PROBLEM TO BE SOLVED: To provide peptides targeted to abolish the androgen receptor/Src association and the development of a new class of compounds for both the prostate cancer therapy and the breast cancer therapy.SOLUTION: The present invention relates to isolated or purified or partially purified peptide derived molecules having the following general formula: X-[(Pro)n-His-Pro-His-Ala-Arg-Ile-Lys]m-Y.SELECTED DRAWING: None【課題】前立腺癌療法と乳癌療法の両方においてアンドロゲンレセプター/Src会合および新しい種類の化合物の発現を無効にするよう標的されたペプチドの提供。【解決手段】以下の一般式:X-[(Pro)n-His-Pro-His-Ala-Arg-Ile-Lys]m-Yで示される単離または精製または部分精製されたペプチド由来分子。【選択図】なし