期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 22, 期 15, 页码 -出版社
MDPI
DOI: 10.3390/ijms22158158
关键词
oleanolic acid; triterpenes derivatives; diamine-(PEG)ylated oleanolic acid; OADP; anti-inflammatory mechanism; RAW 264; 7 cell line; TPA-induced acute ear edema
资金
- Consejeria de Economia, Conocimiento, Empresas y Universidad. Junta de Andalucia [B1-BIO-281-UGR18, B1-FQM-217-UGR18]
Recent evidence suggests that inflammation may contribute to tumorigenic states. The anti-inflammatory effects of OADP have been investigated both in vitro and in vivo, showing potential in inhibiting cytokine expression and blocking inflammatory signaling pathways. The development of OADP as a powerful anti-inflammatory agent could present an effective therapeutic strategy against inflammation and tumorigenesis.
Recent evidence has shown that inflammation can contribute to all tumorigenic states. We have investigated the anti-inflammatory effects of a diamine-PEGylated derivative of oleanolic acid (OADP), in vitro and in vivo with inflammation models. In addition, we have determined the sub-cytotoxic concentrations for anti-inflammatory assays of OADP in RAW 264.7 cells. The inflammatory process began with incubation with lipopolysaccharide (LPS). Nitric oxide production levels were also determined, exceeding 75% inhibition of NO for a concentration of 1 mu g/mL of OADP. Cell-cycle analysis showed a reversal of the arrest in the G0/G1 phase in LPS-stimulated RAW 264.7 cells. Furthermore, through Western blot analysis, we have determined the probable molecular mechanism activated by OADP; the inhibition of the expression of cytokines such as TNF-alpha, IL-1 beta, iNOS, and COX-2; and the blocking of p-I kappa B alpha production in LPS-stimulated RAW 264.7 cells. Finally, we have analyzed the anti-inflammatory action of OADP in a mouse acute ear edema, in male BL/6J mice treated with OADP and tetradecanoyl phorbol acetate (TPA). Treatment with OADP induced greater suppression of edema and decreased the ear thickness 14% more than diclofenac. The development of new derivatives such as OADP with powerful anti-inflammatory effects could represent an effective therapeutic strategy against inflammation and tumorigenic processes.
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