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Characterization of proteolipid protein-peptide-specific CD_4^+ T cell of experimental allergic encephalomyelitis in Biozzi ab/h mice

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中华医学杂志：英文版 2002年第4期 41-44页

作者： Yong Peng and Chih pin Liu Department of Neurology, The Third Affiliated hospital, hunan Medical University , Changsha 410013, China (Peng Y) Division of Immunology, Beckman Research Institute, City of hope National M edical Center, Duarte, CA 9

To detect the function of proteolipid protein (PLP) peptide (residues 56-70) sp ecific CD 4 + T cells in experimental allergic encephalomyelitis (EAE) in Bioz zi ab/h mice (h 2A g7 ) Methods Biozzi ab/h mice were immunized by synthetic PLP 56 70 peptide (DYEYLINVIh AFQYV) which was emulsified by sonication with complete Freund’s adjuvant, a EAE model proven histologically and clinically Murine splenocytes and spinal cord infiltrated (SCI) T cells were stimulated by PLP 56 70 , then the CD 4 + T cells were isolated by Dynabeads, and confirmed by staining with anti CD 4 antibody Finally, the IL2 bioassay and IFN γ/IL4 ELISA were done to detect T cell proliferation and cytokine secretion after PLP 56 70 stimulation Results The histology of murine spinal cord showed a great number of lymphocytes infiltr ated the spinal cord; the clinical signs showed high scores (4 3) on the peak, as well as a good EAE model After being isolated by Dynabea ds , CD 4 + T cells showed high purification (>99%) by staining with anti CD 4 antibody IL2 bioassay showed that those T cells were PLP 56 70 specific T cells ELISA showed that those T cells had high IFN γ/IL4 ratio , indicating that they are T helper 1 (Th1) cells Conclusions PLP 56 70 specific splenocytes and SCI CD 4 + T cells in EAE from Bioz zi ab/h mice were detected and showed that both of them were P LP 56 70 specific Th1 cells It is beneficial to understand what kind o f role these T cells play in the development of

关键词： proteolipid protein · experimental al lergic encephalomyelitis · Biozzi ab/h mice · T helper cell

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