LIPOSOME HAVING TUMOR SPECIFICITY

摘要

PROBLEM TO BE SOLVED: To provide such a drug delivery system (DDS) medicine as specifically and efficiently adsorb-taken in by tumor cells.SOLUTION: There are provided a vector for transferring a drug into tumor cells, comprising: a liposome containing Sindbis virus or a part thereof as a constituent; a cancer-treating composition containing the drug-transferring vector sealing a drug exhibiting an antitumor effect; a tumor cell-labeling composition containing the drug-transferring vector sealing a labeling substance; a method for treating a cancer by administering the drug-transferring vector encapsulating the drug exhibiting the anti-tumor effect; and a tumor cell-labeling method for administering the drug-transferring vector encapsulating the labeling substance.