著者

Jin-ichi SASAKI Kunio ISHITA Yoshiaki TAKAYA Hidemitsu UCHISAWA Hajime MATSUE

出版者

Center for Academic Publications Japan

雑誌

Journal of Nutritional Science and Vitaminology (ISSN:03014800)

巻号頁・発行日

vol.43, no.4, pp.455-461, 1997 (Released:2009-06-15)

参考文献数

10

被引用文献数

12 23 57

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The anti-tumor activity of a new type of peptidoglycan isolated from squid ink was shown to have a cure rate of 64% for Meth A tumor from BALB/c mice. The ink delipidated in acetone, which con-tained the peptidoglycan at 0.1% (w/w), was administered to tumor-transplanted mice so as to examine the anti-tumor activity. One-fifth of the tumor-bearing mice was cured with 3 injections (1 mg/head) of the acetone delipidated squid ink or a prolongation of survival was observed in the treated animals. Heat treatment at 100°C for 10 min did not affect the anti-tumor activity of the delipidated ink, its potentiality being pre-served. The acetone-extractable fraction of the ink also brought about a similar cure rate for Meth A tumor. The delipidated ink enhanced the phagocytic activity of macrophages but no direct cytotoxicity was observed for the Meth A tumor cells. Hence it may be said that the anti-tumor activity of the delipidated ink was mainly due to the aug-mented cellular immunity in vivo.