PROBLEM TO BE SOLVED: To provide a drug delivery system (DDS) for delivering an anticancer agent topically.SOLUTION: An anticancer agent is made by bonding an anticancer component (X) to expanded carbon fibers (ExCFs) represented by the following general formula (1).COPYRIGHT: (C)2014,JPO&INPIT【課題】抗がん剤を局所的に送達する薬物送達系(Drug Delivery System:DDS)の提供【解決手段】下記一般式(1)で表される膨張化炭素繊維(ExCFs)に抗がん成分(X)が結合されてなる抗がん剤。【選択図】なし