Purification and identification of natural antikeratin autoantibody from normal human sera and its effects on the cultured keratinocytes |
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Authors: | Li Cheng-xin LIU Yu-feng LIU Yan-fang ZHANG Tai-shan Departmant of Dermatology Xijing Hospital Fourth Military Medical University Xian China Departmant of Pathology Fourth Military Medical University Xi'an China |
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Affiliation: | Li Cheng-xin, LIU Yu-feng,LIU Yan-fang,ZHANG Tai-shan Departmant of Dermatology,Xijing Hospital,Fourth Military Medical University,Xian 710033,China Departmant of Pathology,Fourth Military Medical University,Xi'an 710033,China |
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Abstract: | Objective: To purify the natural antikeratin autoantibody (AK auto-Ab) and observe its effects on the prolif eration of the cultured keratinocytes. Methods: Natural AK auto-Ab was purified by using keratin affinity column, and then the titre and specificity of the Abs were studied by ELISA, immunoperoxidase staining and immuno-electronicmicroscope. The effect of the purified Abs on the cultured keratino-cytes was assayed by 3H-TdR incorporation. Results: Natural AK auto-Ab was obtained. The binding activity of IgG AK auto-Ab in purified Ah remained similar to that in pooled human sera. and the specificity of the obtained antibody is strong. The purified antibody could decrease the Il-TdR incorporation of the cultured keratinocytes in a dose-dependent manner. Conclusion: The method of punning AK auto-Ab is simple, practicable and reliable. Natural AK auto-Ab, existing in normal human individuals, has inhibitory etiect on the proliferation of the cultured keratinocytes. |
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Keywords: | antikeratin autoantibody purification proliferation |
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