Korean Journal of Pharmacognosy (생약학회지)

The Korean Society of Pharmacognosy (한국생약학회)
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Effect of Lectin Isolated from Serrognathus platymelus castanicolor Larvae on the Various Cytokine Expressions

넓적사슴벌레(Serrognathus platymelus castanicolor) 유충으로부터 분리한 렉틴의 사이토카인 발현

  • Published : 2006.12.30
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Abstract

A lectin was purified from Serrognathus platymelus castanicolor larvae and named as SPL. The purification was carried out by ion-exchange chromatography on DEAE Sephadex A-50 and gel filtration chromatography on Sephadex G-200. The purity of the protein was verified by polyacrylamide gel electrophoresis and the purified lectin agglutinated erythrocytes of rabbit and human A, B, O, AB. SPL was tested it's ability to enhance the expressions of cytokines, $IL-1\alpha$, IL-2, IL-6, $TNF\alpha$ and $IFN\gamma$ by human peripheral blood mononuclear cells (PBMC) obtained from healthy donors. mRNA analyses were performed by RT-PCR at the moment of 1, 4, 8, 24, 48, 72 and 96 h after stimulation of PBMC with purified SPL. The patterns of IL-2 band were slightly expressed from 24 h and the strongest band was appeared at 96 h. The expressions of $IL-1\alpha$ and IL-6 mRNA were strong from 1 to 8 h and those of $TNF\alpha$ were from 48 to 96 h. The mRNA encoding $IFN\gamma$ were not detected. The addition of SPL for macrophage cultures induced production of nitric oxide (NO) by cells in a dose-dependent manner. NO release was partially inhibited by $TNF\alpha$ antibodies. These results suggest that SPL has the ability to enhance cytokine expressions in PBMC and to induce the NO release by TNFa in macrophage cultures from PBMC cultures.

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References

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