Abstract
Immunochemical assays using anti-saikosaponin a monoclonal antibody (MAb) and so-called Eastern blotting have been established for semi-quantitative analysis of the saikosaponins (SS) SSa, SSb2, SSc, and SSd, which are active constituents of the Bupleuri radix. After crude separation of saikosaponins by TLC, compounds were transferred from the TLC plate to a PVDF membrane where they were oxidized with NaIO4 and, finally, conjugated with bovine serum albumin (BSA). Clear and specific detection and identification of the immobilized saikosaponin–BSA conjugates were achieved by use of the MAbs. Compared with TLC, the Eastern blotting technique for analysis of saikosaponin compounds is a simple method for quality-control monitoring of Bupleuri radix and of Kampo formulations containing Bupleuri radix.
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Acknowledgments
This work was supported in part by a Grant-in-Aid from JSPS’s Asian CORE Program, the Ministry of Education, Culture, Sports, Science and Technology of Japan, the research funds of the Kyushu University Foundation, and the Japan Kampo Medicine Manufacturers Association from Japan Kampo Medicine Manufacturers.
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Zhu, Sh., Morinaga, O., Shimokawa, S. et al. Eastern blotting and use of anti-saikosaponin a monoclonal antibodies for detection of saikosaponins. J Nat Med 61, 178–183 (2007). https://doi.org/10.1007/s11418-006-0104-9
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DOI: https://doi.org/10.1007/s11418-006-0104-9