Polypeptide specifically bound with human breast cancer cell and application thereof

The invention relates to polypeptide specifically bound with a human breast cancer cell and application thereof. The amino acid sequence of the polypeptide is HPLGPTWRIPDT. The polypeptide specifically bound with the human breast cancer cell MCF-7 is specifically bound with the human breast cancer. The breast cancer targeted polypeptide obtained through screening and preliminary identification has the obvious binding specificity with the breast cancer cell and can be used for developing a breast cancer early-stage targeted diagnosis reagent and an efficient low-toxicity targeted therapy medicine. 本发明涉及人乳腺癌细胞特异性结合的多肽及其应用，所涉及多肽的氨基酸序列为：HPLGPTWRIPDT。所涉及的应用为本发明的人乳腺癌细胞MCF-7特异性结合的多肽特异结合人乳腺癌的应用。本发明筛选和初步鉴定获得的乳腺癌靶向多肽具有明显的乳腺癌细胞结合特异性，可用于研发乳腺癌早期靶向诊断试剂、高效低毒靶向治疗药物。