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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2007.3
- 수록면
- 26 - 30 (5page)
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초록· 키워드
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Mycobacterial antigens released as PIM, LM, LAM, lipoproteins and other cellular factors may contribute to macrophage and dendritic cell activation through pattern recognition receptors such as TLRs. In this study, we assessed cytokine production and ERK activation with stimulation of several major mycobacterial antigens. Methods: Purified mycobacterial antigens (10, 22, 30, 38kDa) and recombinant antigens (6, 16, 19, 38kDa, Ag85A antigen) were studied. The production of cytokines (TNF-α, IL-12, IL-6) was measured by ELISA. The ERK activation was detected by western blotting. The expression of TLR2 or TLR4 was measured by flow cytometry. Results: Among purified antigens only 30kDa antigen induced production of IL-6 or TNF-α in THP-1 macrophage cells. When THP-1 macrophage cells were treated with 30kDa antigen, phosphorylation of ERK was detected. ERK activation also occurred in TLR2 transfectant HEK293 cells with 30kDa antigen stimulation. Conclusion: 30kDa antigen is one of the major mycobacterial antigens inducing cytokine production and MAP kinases phosphorylation in macrophages.
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