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Ochi A, Fujii S, Ohta T, Uto T, Nuntawong P, Tanaka H, Morimoto S, Sakamoto S. Highly sensitive indirect competitive enzyme-linked immunosorbent assay based on a monoclonal antibody against saikosaponin b2 for quality control of Kampo medicines containing Bupleuri radix. J Nat Med 2024; 78:160-168. [PMID: 37804411 DOI: 10.1007/s11418-023-01753-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 09/08/2023] [Indexed: 10/09/2023]
Abstract
Saikosaponins are naturally occurring oleanane-type triterpenoids that are found in Bupleuri radix (root of Bupleurum falcatum) and exhibit a broad biological activity spectrum. Saikosaponin b2 (SSb2) is the main saikosaponin in Kampo medicine extracts and is a designated quality control marker for the same in the Japanese Pharmacopeia. Although some monoclonal antibodies (mAbs) against saikosaponins have been produced to evaluate the quality of Bupleuri radix and related products, anti-SSb2 mAbs have not been used to quantify SSb2 in Kampo medicines. To address this knowledge gap, we herein established a new hybridoma cell line secreting a highly specific anti-SSb2 mAb and developed an indirect competitive enzyme-linked immunosorbent assay (icELISA) based on this mAb for the detection of SSb2 in Bupleuri radix-containing Kampo medicines. The generated SSb2-recognized mAb exhibited high specificity to SSb2 in icELISA. The developed assay featured high sensitivity (linearity range = 1.95-125 ng/ml), accuracy, precision and reproducibility (coefficient of variation < 5%), and the thus determined SSb2 contents were strongly correlated with those obtained using liquid chromatograph-mass spectrometer. These results suggest that the anti-SSb2 mAb-based icELISA method can be used for the quality control and standardization of Kampo medicines containing Bupleuri radix.
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Affiliation(s)
- Akihiro Ochi
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka, 812-8582, Japan
| | - Shunsuke Fujii
- Faculty of Health Management, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, 859-3298, Japan
| | - Tomoe Ohta
- Faculty of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, 859-3298, Japan
| | - Takuhiro Uto
- Faculty of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, 859-3298, Japan
| | - Poomraphie Nuntawong
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka, 812-8582, Japan
| | - Hiroyuki Tanaka
- Faculty of Pharmaceutical Sciences, Sanyo-Onoda City University, 1-1-1 Daigaku-Dori, Yamaguchi, 756-0884, Japan
| | - Satoshi Morimoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka, 812-8582, Japan
| | - Seiichi Sakamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, Fukuoka, 812-8582, Japan.
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Krittanai S, Choonong R, Butdapheng K, Jabsanthia J, Sakamoto S, Putalun W. Construction of a monoclonal antibody against glabridin (2G4) and development of an enzyme-linked immunosorbent assay. PHYTOCHEMICAL ANALYSIS : PCA 2023. [PMID: 37188651 DOI: 10.1002/pca.3237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/27/2023] [Accepted: 04/30/2023] [Indexed: 05/17/2023]
Abstract
INTRODUCTION Glabridin is a unique isoflavonoid found only in Glycyrrhiza glabra L. The pharmacological effects of glabridin are well established, especially for beauty- and wellness-related uses, such as antioxidant, anti-inflammatory, ultraviolet (UV) protection, and skin-lightening effects. Therefore, glabridin is often found in commercial products such as creams, lotions, and dietary supplements. OBJECTIVE This study aimed to develop an enzyme-linked immunosorbent assay (ELISA) using a glabridin-specific antibody. METHOD Immunogen conjugation of glabridin-bovine serum albumin was performed via the Mannich reaction, and the resulting conjugates were injected into BALB/c mice. Subsequently, hybridomas were produced. An ELISA method for glabridin determination was developed and validated. RESULT A highly specific antibody against glabridin was produced using clone 2G4. The assay range for the determination of glabridin was 0.28-7.02 μg/ml, with a detection limit of 0.16 μg/ml. The validation parameters in terms of accuracy and precision met the acceptable criteria. Standard curves of glabridin in various matrices were compared to evaluate the matrix effect on human serum using ELISA. Standard curves of the human serum and water matrix were obtained in the same manner, and the measurement range was 0.41-10.57 μg/ml. CONCLUSION The developed ELISA method was used to quantify glabridin in plant materials and products with high sensitivity and specificity, and has potential applications in quantifying compounds in plant-derived products and human serum samples.
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Affiliation(s)
- Supaluk Krittanai
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | | | | | - Jakkrit Jabsanthia
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Seiichi Sakamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Waraporn Putalun
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
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Fujii S, Ohta T, Ehama R, Irikida M, Nomura S, Shoyama Y, Uto T. Development of an indirect competitive enzyme-linked immunosorbent assay for formononetin and its application in a cell-based assay using MC3T3-E1 cells. Food Chem 2023; 403:134339. [PMID: 36174344 DOI: 10.1016/j.foodchem.2022.134339] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 09/02/2022] [Accepted: 09/16/2022] [Indexed: 12/30/2022]
Abstract
Formononetin (FMN) is a methoxy isoflavone found abundantly in leguminous plants and associated foods. Several analytical methods have been developed to detect FMN. However, they are costly, complicated, and time-consuming. This study describes an indirect competitive enzyme-linked immunosorbent assay (icELISA) to determine FMN content in food samples using a monoclonal antibody (mAb) against FMN produced by a newly established hybridoma cell line. Validation studies were conducted, and this assay was found to be sufficiently reliable, with an analytical measurement range of 19.53-1250 ng/mL and a detection limit of 17.42 ng/mL. Furthermore, icELISA was successfully applied for a cell-based assay in which the amount of FMN and ononin uptake was quantified in MC3T3-E1 cells. Hence, icELISA is a simple and reliable method for the detection and quantification of FMN, as well as elucidation of its functions and underlying mechanisms of action.
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Affiliation(s)
- Shunsuke Fujii
- Department of Health and Nutrition, Faculty of Health Management, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo 859-3298 Japan
| | - Tomoe Ohta
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo 859-3298 Japan
| | - Riho Ehama
- Department of Health and Nutrition, Faculty of Health Management, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo 859-3298 Japan
| | - Mizuki Irikida
- Department of Health and Nutrition, Faculty of Health Management, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo 859-3298 Japan
| | - Shuichi Nomura
- Department of Health and Nutrition, Faculty of Health Management, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo 859-3298 Japan
| | - Yukihiro Shoyama
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo 859-3298 Japan
| | - Takuhiro Uto
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo 859-3298 Japan.
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Krittanai S, Pichetpongtorn P, Sakamoto S, Putalun W. Monoclonal antibody-based immunoassay for the specific quantification of licochalcone A: an active chalcone in licorice. FOOD AGR IMMUNOL 2022. [DOI: 10.1080/09540105.2022.2053948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Supaluk Krittanai
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | | | - Seiichi Sakamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Waraporn Putalun
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
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Liu Z, Liu L, Cui G, Wu X, Kuang H. Development of an immunochromatographic strip assay based on a monoclonal antibody for detection of cimaterol. FOOD AGR IMMUNOL 2019. [DOI: 10.1080/09540105.2019.1674787] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Ziying Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, People’s Republic of China
| | - Liqiang Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, People’s Republic of China
| | - Gang Cui
- Department of Biotechnology, Yancheng Teachers University, Yancheng, People’s Republic of China
| | - Xiaoling Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, People’s Republic of China
| | - Hua Kuang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- International Joint Research Laboratory for Biointerface and Biodetection, and School of Food Science and Technology, Jiangnan University, Wuxi, People’s Republic of China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, People’s Republic of China
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