Array number 1 or the vector which includes shRNA or siRNA and this DNA which are revealed from DNA and this DNA where anti sense DNA of the maximum of 30 bases which include the base array of array number 2 and this anti sense DNA and the sense DNA which conjugation it is possible are concatenated with linkage editor DNA, the capsule or the liposome which encloses these can suppress the myocardial infarction, the myocardial cell at the time of the myocardial infarction can prolong life. In addition, the above-mentioned effect is reinforced more these and by jointly using with the erythropoietin.配列番号1又は配列番号2の塩基配列を含む最大30塩基のアンチセンスDNAと、このアンチセンスDNAと対合できるセンスDNAとがリンカーDNAで連結されたDNA、このDNAから発現するshRNA 又はsiRNA、このDNAを含むベクター、これらを封入したカプセル又はリポソームは、心筋梗塞を抑制し、心筋梗塞時の心筋細胞を延命できる。また、これらとエリスロポエチンとを併用することにより、一層上記効果が増強される。
