The invention relates to a K237
peptide modified invisible nano particle loaded with an anti-
tumor angiogenesis drug. The invisible nano particle consists of the anti-
tumor angiogenesis drug, K237
peptide and an invisible nano particle. The invention further provides a preparation method and application of the K237
peptide modified invisible nano particle loaded with the anti-
tumor angiogenesis drug. The invention selectively targets the newly generated tumor blood vessels, greatly improves the concentration of the anti-tumor
angiogenesis drug (such as the concentration of
paclitaxel) in the chrotoplast in the blood vessels, maximumly reduces the concentration of the anti-tumor
angiogenesis drug in the normal organs, and overcomes the side-effects caused by the distribution of the drug throughout the body. Since the therapeutic target is the chrotoplast in the tumor blood vessels,
drug resistance can not be developed, and the nano particle is potentially effective to the tumor which is already in existence and is resistant to multiple anti-tumor
angiogenesis drugs (such as
paclitaxel). The invention aims to realize anti-angiogenic
tumor therapy and the invisible nano particle can also restrain the
metastasis and recrudescence of tumors.