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자료유형
학술저널
저자정보
Lee, Jae Hoon (Department of Food Science and Biotechnology of Animal Resources, Konkuk University) Ahn, Dong Uk (Department of Animal Science, Iowa State University) Paik, Hyun-Dong (Department of Food Science and Biotechnology of Animal Resources, Konkuk University)
저널정보
한국축산식품학회 한국축산식품학회지 한국축산식품학회지 제38권 제6호
발행연도
2018.1
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1,226 - 1,236 (11page)

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Ovotransferrin (OTF) is a well-known protein of the transferrin family with strong iron chelating activity, resulting in its antimicrobial activity. Furthermore, OTF is known to have antioxidant, anticancer, and antihypertensive activities. However, there have been few studies about the immune-enhancing activity of OTF. In current study, we investigated the immune-enhancing activity of OTF using the murine macrophage cells in vitro. The effect of OTF on production of pro-inflammatory mediators and cytokines were determined using Griess assay and quantitative real-time PCR. Using Neutral Red uptake assay, we confirmed the effect of OTF on phagocytic activity of macrophages. Ovotransferrin significantly increased the production of nitric oxide (NO) and secretion of inducible nitric oxide synthase (iNOS) mRNA with no cytotoxic activity. Ovotransferrin (2 mg/mL) stimulated NO production up to $31.9{\pm}3.5{\mu}M$. Ovotransferrin significantly increased the mRNA expression levels of pro-inflammatory cytokines which are tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$), Interleukin-$1{\beta}$ (IL-$1{\beta}$), and IL-6: OTF (2 mg/mL) treatment increased the secretion of mRNA for TNF-${\alpha}$, IL-$1{\beta}$, and IL-6 by 22.20-, 37.91-, and 6.17-fold of the negative control, respectively. The phagocytic activity of macrophages was also increased by OTF treatment significantly compared with negative control. Also, OTF treatment increased phosphorylation level of MAPK signaling pathways. These results indicated that OTF has immune-enhancing activity by activating RAW 264.7 macrophages via MAPK pathways.

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