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자료유형
학술저널
저자정보
Jung, In-Duk (College of Medicine, Konyang University) Lee, Jang-Soon (College of Medicine, Konyang University) Yun, Seong-Young (College of Medicine, Konyang University) Park, Chang-Gyo (College of Medicine, Konyang University) Han, Jeung-Whan (College of Pharmacy, Sungkyunkwan Universit) Lee, Hyang-Woo (College of Pharmacy, Sungkyunkwan University) Lee, Hoi-Young (College of Medicine, Konyang University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제25권 제5호
발행연도
2002.1
수록면
691 - 696 (6page)

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Doxorubicin (DOX) is an active and broad spectrum chemotherapeutic agent. Increased inducible nitric oxide synthase (NOS) expression and/or activity have been reported in several human tumors. While the relationship between DOX treatment and the enzymatic activity of endothelial NOS has been well characterized, little is known about the effects of DOX on the expression of iNOS in human cancer cells. In the present study, we characterized the effects of DOX on the nitric oxide (NO) production by colorectal cancer cells, DLD-1. IFN-${\gamma}$/IL-1$\beta$ (CM) increased the production of NO, whereas pretreatment of DOX inhibited the production of NO in response to CM in a dose dependent manner. The increased expressions of iNOS mRNA and protein by CM were completely blocked by DOX without affecting the iNOS mRNA stability. However, DOX activated nuclear factor-kB (NF-kB) in response to CM. Furthermore, the expression of inhibitor kB$\alpha$ was reduced by DOX in a dose dependent manner. Collectively, DOX inhibited the production of NO by DLD-1 cells, which is not linked to well known transcription factor, NF-kB. Therefore, further studies on the possible mechanisms of inhibitory effects of NO production by DOX would be worth pursuing.

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