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DFU, a selective COX-2 inhibitor, suppresses MCF-7 xenograft tumor growth in mice
Gaku Matsumoto1, Mohammad Atiqur Rahman, Mariko Muta
1Department of Surgery, Tokyo Metropolitan Komagome Hospital, Honkomagome, Bunkyo-ku, Tokyo 113-8677, Japan. gaku0508@ruby.ocn.ne.jp
Abstract:
Cyclooxygenase-2 (COX-2) inhibitors are regarded as potentially important in strategies for cancer treatment. however, the precise mechanisms of these anti-inflammatory drugs as anti-cancer therapy are still unknown. In this study, we examined the effect of DFU both in vitro on MCF-7 cell growth, as well as in vivo on tumor growth produced by MCF-7 cell injection in mice. DFU has growth inhibitory effects on tumor growth in mice compared to the control group. We examined the tumor tissues for apoptosis and angiogenesis by immunostaining. Apoptosis was detected only in the treatment group. DFU treatment also resulted in the inhibition of angiogenesis, as well as decreased COX-2 expression. Results of this study suggest that inhibitory effects of DFU might be COX-2 dependent.
Insights
DFU demonstrated anti-cancer effects by inhibiting tumor growth, apoptosis, and angiogenesis in mice. These inhibitory effects appear to be dependent on Cyclooxygenase-2 (COX-2) expression.
Area of Science:
- Oncology
- Pharmacology
Background:
- Cyclooxygenase-2 (COX-2) inhibitors show promise in cancer treatment.
- The anti-cancer mechanisms of these drugs remain largely unknown.
Purpose of the Study:
- To investigate the anti-cancer effects of DFU (a COX-2 inhibitor).
- To explore the in vitro and in vivo mechanisms of DFU on MCF-7 breast cancer cells and tumors.
Main Methods:
- In vitro studies on MCF-7 cell growth.
- In vivo studies using MCF-7 tumor xenografts in mice.
- Immunostaining to assess apoptosis, angiogenesis, and COX-2 expression in tumor tissues.
Main Results:
- DFU inhibited tumor growth in mice compared to controls.
- Apoptosis was observed in DFU-treated tumors.
- DFU treatment decreased angiogenesis and reduced COX-2 expression.
- DFU exhibited growth inhibitory effects on MCF-7 cells in vitro.
Conclusions:
- DFU possesses significant anti-cancer properties.
- The anti-cancer effects of DFU are likely mediated through COX-2 inhibition.
- DFU may represent a potential therapeutic agent for cancer treatment.