1
|
Chuphol N, Nokkaew N, Makkliang F, Sae-Foo W, Phaisan S, Putalun W, Sakamoto S, Yusakul G. Immunochromatographic assay for miroestrol and deoxymiroestrol, its cross-reactivity, and application in Pueraria mirifica (white Kwao Krua) analysis. PHYTOCHEMICAL ANALYSIS : PCA 2023; 34:421-430. [PMID: 36950953 DOI: 10.1002/pca.3223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 02/23/2023] [Accepted: 03/07/2023] [Indexed: 06/03/2023]
Abstract
INTRODUCTION Miroestrol (Mi) and deoxymiroestrol (Dmi) are trace, yet potent, phytooestrogens found in white Kwao Krua [Pueraria candollei var. mirifica (Airy Shaw & Suvat.) Niyomdham, PM]. However, the analysis of these substances is difficult because of complex matrix effects and their various analogues. In addition, alteration in the cross-reactivity of a gold nanoparticle (AuNP)-based immunochromatographic assay (ICA) resulting from the electrostatic adsorption between antibodies and AuNPs has not yet been evaluated. OBJECTIVES This study aims to develop, characterise, and validate ICA with a monoclonal antibody exhibiting similar reactivity against Mi and Dmi (MD-mAb). MATERIALS AND METHODS The ICA performance was validated for cross-reactivity and performance in comparison with those of indirect competitive enzyme-linked immunosorbent assays (icELISAs) with MD-mAb and mAb exhibiting specificity against Mi (Mi-mAb). RESULTS The ICA showed a limit of detection (LOD) at 1 and 16 μg/mL for Mi and Dmi, respectively. The cross-reactivity of the ICA with Dmi was lower (6.25%) than that observed with the icELISA (120%). Cross-reactivity of ICA against other compounds of the PM was also correlated with those of icELISA; no false-positive/negative results were observed. The repeatability and reproducibility of the ICA were confirmed. The results obtained using ICA in samples of PM are correlated with the concentrations determined through icELISAs. CONCLUSION An ICA with MD-mAb was constructed and validated. However, direct conjugation via the electrostatic adsorption of mAb-AuNPs was expected to alter the cross-reactivity of ICA, especially that of the analyte analogue Dmi.
Collapse
Affiliation(s)
- Natthapon Chuphol
- Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
| | - Nuttikarn Nokkaew
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
| | - Fonthip Makkliang
- School of Languages and General Education, Walailak University, Nakhon Si Thammarat, Thailand
| | - Worapol Sae-Foo
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Suppalak Phaisan
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
| | - Waraporn Putalun
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Seiichi Sakamoto
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Gorawit Yusakul
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
- Biomass and Oil Palm Center of Excellence, Walailak University, Nakhon Si Thammarat, Thailand
| |
Collapse
|
2
|
Suntichaikamolkul N, Akashi T, Mahalapbutr P, Sanachai K, Rungrotmongkol T, Bassard JE, Schaller H, De-Eknamkul W, Vimolmangkang S, Yamazaki M, Sirikantaramas S. Daidzein Hydroxylation by CYP81E63 Is Involved in the Biosynthesis of Miroestrol in Pueraria mirifica. PLANT & CELL PHYSIOLOGY 2023; 64:64-79. [PMID: 36218384 DOI: 10.1093/pcp/pcac140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
White Kwao Krua (Pueraria candollei var. mirifica), a Thai medicinal plant, is a rich source of phytoestrogens, especially isoflavonoids and chromenes. These phytoestrogens are well known; however, their biosynthetic genes remain largely uncharacterized. Cytochrome P450 (P450) is a large protein family that plays a crucial role in the biosynthesis of various compounds in plants, including phytoestrogens. Thus, we focused on P450s involved in the isoflavone hydroxylation that potentially participates in the biosynthesis of miroestrol. Three candidate P450s were isolated from the transcriptome libraries by considering the phylogenetic and expression data of each tissue of P. mirifica. The candidate P450s were functionally characterized both in vitro and in planta. Accordingly, the yeast microsome harboring PmCYP81E63 regiospecifically exhibited either 2' or 3' daidzein hydroxylation and genistein hydroxylation. Based on in silico calculation, PmCYP81E63 had higher binding energy with daidzein than with genistein, which supported the in vitro result of the isoflavone specificity. To confirm in planta function, the candidate P450s were then transiently co-expressed with isoflavone-related genes in Nicotiana benthamiana. Despite no daidzein in the infiltrated N. benthamiana leaves, genistein and hydroxygenistein biosynthesis were detectable by liquid Chromatography with tandem mass spectrometry (LC-MS/MS). Additionally, we demonstrated that PmCYP81E63 interacted with several enzymes related to isoflavone biosynthesis using bimolecular fluorescence complementation studies and a yeast two-hybrid analysis, suggesting a scheme of metabolon formation in the pathway. Our findings provide compelling evidence regarding the involvement of PmCYP81E63 in the early step of the proposed miroestrol biosynthesis in P. mirifica.
Collapse
Affiliation(s)
- Nithiwat Suntichaikamolkul
- Center of Excellence in Molecular Crop, Department of Biochemistry, Faculty of Science, Chulalongkorn University, 254 Pathumwan, Bangkok 10330, Thailand
| | - Tomoyoshi Akashi
- Department of Applied Biological Sciences, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Panupong Mahalapbutr
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, 123 Muang District, Khon Kaen 40002, Thailand
| | - Kamonpan Sanachai
- Department of Biochemistry, Faculty of Science, Khon Kaen University, 123 Muang District, Khon Kaen 40002, Thailand
| | - Thanyada Rungrotmongkol
- Center of Excellence in Biocatalyst and Sustainable Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, 254 Pathumwan, Bangkok 10330, Thailand
- Program in Bioinformatics and Computational Biology, Graduate School, Chulalongkorn University, 254 Pathumwan, Bangkok 10330, Thailand
| | - Jean-Etienne Bassard
- Institut de biologie moléculaire des plantes, CNRS, Université de Strasbourg, 12 rue du général Zimmer, Strasbourg 67084, France
| | - Hubert Schaller
- Institut de biologie moléculaire des plantes, CNRS, Université de Strasbourg, 12 rue du général Zimmer, Strasbourg 67084, France
| | - Wanchai De-Eknamkul
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Pathumwan, Bangkok 10330, Thailand
| | - Sornkanok Vimolmangkang
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Pathumwan, Bangkok 10330, Thailand
- Center of Excellence in Plant-Produced Pharmaceuticals, Chulalongkorn University, 254 Pathumwan, Bangkok 10330, Thailand
| | - Mami Yamazaki
- Laboratory of Molecular Biology and Biotechnology, Graduate School of Pharmaceutical Science, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan
- Plant Molecular Science Center, Chiba University, 1-8-1 Inohana, Chuo-ku Chiba 260-8675, Japan
| | - Supaart Sirikantaramas
- Center of Excellence in Molecular Crop, Department of Biochemistry, Faculty of Science, Chulalongkorn University, 254 Pathumwan, Bangkok 10330, Thailand
| |
Collapse
|
3
|
Juengsanguanpornsuk W, Kitisripanya T, Boonsnongcheep P, Yusakul G, Srisongkram T, Sakamoto S, Putalun W. Improvement in the binding specificity of anti-isomiroestrol antibodies by expression as fragments under oxidizing conditions inside the SHuffle T7 E. coli cytoplasm. Biosci Biotechnol Biochem 2022; 86:1368-1377. [PMID: 35876636 DOI: 10.1093/bbb/zbac126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 07/18/2022] [Indexed: 11/14/2022]
Abstract
Sensitive and specific analysis of isomiroestrol (Iso) is required for the quality control of Pueraria candollei, an herb used to treat menopausal disorders. The anti-isomiroestrol monoclonal antibody (Iso-mAb) exhibits cross-reactivity with miroestrol and deoxymiroestrol, which impacts the analytical results. Here, the active and soluble forms of the single-chain variable fragment (Iso-scFv) and fragment antigen-binding (Iso-Fab) against Iso were expressed using Escherichia coli SHuffle® T7 to alter the binding specificity. The Iso-scFv format exhibited a higher binding activity than the Iso-Fab format. The reactivity of Iso-scFv towards Iso was comparable to that of the parental Iso-mAb. Remarkably, the binding specificity of the scFv structure was improved and cross-reactivity against analogs was reduced from 13.3-21.0% to less than 1%. The structure of recombinant antibodies affects the binding characteristics. Therefore, the immunoassays should improve specificity; these findings can be useful in agricultural processes and for quality monitoring of P. candollei-related materials.
Collapse
Affiliation(s)
| | - Tharita Kitisripanya
- Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand
| | | | - Gorawit Yusakul
- School of Pharmacy, Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Tarapong Srisongkram
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Seiichi Sakamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Waraporn Putalun
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand
| |
Collapse
|
4
|
Makkliang F, Siriwarin B, Yusakul G, Phaisan S, Sakdamas A, Chuphol N, Putalun W, Sakamoto S. Biocompatible natural deep eutectic solvent-based extraction and cellulolytic enzyme-mediated transformation of Pueraria mirifica isoflavones: a sustainable approach for increasing health-bioactive constituents. BIORESOUR BIOPROCESS 2021; 8:76. [PMID: 38650188 PMCID: PMC10992110 DOI: 10.1186/s40643-021-00428-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 08/07/2021] [Indexed: 11/10/2022] Open
Abstract
The presence of specific gut microflora limits the biotransformation of Pueraria mirifica isoflavone (PMI) glycosides into absorbable aglycones, thus limiting their health benefits. Cellulolytic enzyme-assisted extraction (CAE) potentially solves this issue; however, solvent extraction requires recovery of the hydrophobic products. Here, we established the simultaneous transformation and extraction of PMIs using cellulolytic enzymes and natural deep eutectic solvents (NADESs). The NADES compositions were optimized to allow the use of NADESs as CAE media, and the extraction parameters were optimized using response surface methodology (RSM). The optimal conditions were 14.7% (v/v) choline chloride:propylene glycol (1:2 mol ratio, ChCl:PG) at 56.1 °C for the cellulolytic enzyme (262 mU/mL) reaction in which daidzin and genistin were extracted and wholly transformed to their aglycones daidzein and genistein. The extraction of PMIs using ChCl:PG is more efficient than that using conventional solvents; additionally, biocompatible ChCl:PG enhances cellulolytic enzyme activity, catalyzing the transformation of PMIs into compounds with higher estrogenicity and absorbability.
Collapse
Affiliation(s)
- Fonthip Makkliang
- School of Languages and General Education, Walailak University, Nakhon Si Thammarat, Thailand
| | - Boondaree Siriwarin
- Faculty of Pharmaceutical Sciences, Huachiew Chalermprakiet University, Samut Prakan, Thailand
| | - Gorawit Yusakul
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, 80160, Thailand.
- Biomass and Oil Palm Center of Excellence, Walailak University, Nakhon Si Thammarat, Thailand.
| | - Suppalak Phaisan
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Attapon Sakdamas
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Natthapon Chuphol
- Faculty of Pharmaceutical Sciences, Prince of Songkla University, Songkhla, Thailand
| | - Waraporn Putalun
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Seiichi Sakamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| |
Collapse
|
5
|
Sae-Foo W, Krittanai S, Juengsanguanpornsuk W, Yusakul G, Kitisripanya T, Sakamoto S, Putalun W. Enzyme-linked immunosorbent assay using fragment antigen-binding (Fab) antibody for determination of deoxymiroestrol, a potent phytoestrogen from Pueraria candollei. FOOD AGR IMMUNOL 2021. [DOI: 10.1080/09540105.2021.1946486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Worapol Sae-Foo
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Supaluk Krittanai
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | | | - Gorawit Yusakul
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
| | - Tharita Kitisripanya
- Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Seiichi Sakamoto
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Waraporn Putalun
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| |
Collapse
|
6
|
Sae-Foo W, Krittanai S, Juengsanguanpornsuk W, Yusakul G, Sakamoto S, Putalun W. Fragment antigen-binding (Fab) antibody-based lateral flow immunoassay for rapid and sensitive detection of potent phytoestrogen, deoxymiroestrol. J Nat Med 2021; 75:1043-1049. [PMID: 34106388 DOI: 10.1007/s11418-021-01539-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 06/02/2021] [Indexed: 10/21/2022]
Abstract
Pueraria candollei is an ingredient of Thai herbal medicine, dietary supplements, and cosmetics. The in vitro and in vivo studies of this plant supported anti-osteoporotic activity and used for hormone replacement therapy. Deoxymiroestrol shows the most potent phytoconstituent in tuberous root of P. candollei with estrogenic activity. The quality controls are important for good agricultural practice (GAP) and good manufacturing practice (GMP) of plant-derived raw materials. The rapid detection of lateral flow immunoassay (LFIA) using colloidal gold is simply method, easy visualize detection and produce less waste than conventional chromatographic detection. In this study, LFIA for qualitative detection of deoxymiroestrol using antigen-binding fragment antibody (Fab) was developed. The result showed that the developed LFIA displays specific detection of deoxymiroestrol. Cross reactivity of this method was analyzed with miroestrol, isomiroestrol and methylisomiroestrol which showed 39.97%, 7.71% and 5.72%, respectively. After optimal condition, limit of detection (LOD) for deoxymiroestrol is 250 ng/ml. Plant samples were applied to strip test compare with indirect competitive ELISA using polyclonal antibody to confirm the application of LFIA. The results of LFIA method were comparable with those from ELISA. This developed lateral flow immunoassay can apply to detect deoxymiroestrol for the rapid testing. The developed method can use for quality control in plant samples as deoxymiroestrol is biomarker compound in P. candollei.
Collapse
Affiliation(s)
- Worapol Sae-Foo
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Supaluk Krittanai
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, 40002, Thailand
| | | | - Gorawit Yusakul
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
| | - Seiichi Sakamoto
- Department of Pharmacognosy, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Waraporn Putalun
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, 40002, Thailand.
| |
Collapse
|
7
|
Rattanapisit K, Kitisripanya T, Konyanee A, Sae-Foo W, Burapapiruin A, Putalun W, Sakamoto S, Phoolcharoen W, Yusakul G. Plant-made antibody against miroestrol: a new platform for expression of full-length immunoglobulin G against small-molecule targets in immunoassays. PLANT CELL REPORTS 2021; 40:723-733. [PMID: 33582859 DOI: 10.1007/s00299-021-02670-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
KEY MESSAGE Plant expression platform is the new source of immunoglobulin G (IgG) toward small low-molecular-weight targets. The plant-made monoclonal antibody-based immunoassay exhibits comparable analytical performance with hybridoma antibody. Immunoassays for small molecules are efficiently applied for monitoring of serum therapeutic drug concentration, food toxins, environmental contamination, etc. Immunoglobulin G (IgG) is usually produced using hybridoma cells, which requires complicated procedures and expensive equipment. Plants can act as alternative and economic hosts for IgG production. However, the production of free hapten (low-molecular-weight target)-recognizing IgG from plants has not been successfully developed yet. The current study aimed at creating a plant platform as an affordable source of IgG for use in immunoassays and diagnostic tools. The functional IgG was expressed in Nicotiana benthamiana leaves infiltrated with Agrobacterium tumefaciens strain GV3101 with recombinant geminiviral vectors (pBY3R) occupying chimeric anti-miroestrol IgG genes. The appropriate assembly between heavy and light chains was achieved, and the yield of expression was 0.57 µg/g fresh N. benthamiana leaves. The binding characteristics of the IgG to miroestrol and binding specificity to related compounds, such as isomiroestrol and deoxymiroestrol, were similar to those of hybridoma-produced IgG (monoclonal antibody, mAb). The plant-based mAbs exhibited high sensitivity for miroestrol (IC50, 23.2 ± 2.1 ng/mL), precision (relative standard deviation ≤ 5.01%), and accuracy (97.8-103% recovery), as determined using quantitative enzyme-linked immunosorbent assay. The validated enzyme-linked immunosorbent assay was applicable to determine miroestrol in plant samples. Overall, the plant-produced functional IgG conserved the binding activity and specificity of the parent IgG derived from mammalian cells. Therefore, the plant expression system may be an efficient and affordable platform for the production of antibodies against low-molecular-weight targets in immunoassays.
Collapse
Affiliation(s)
- Kaewta Rattanapisit
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences and Research Unit for Plant-Produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand
| | | | - Atthaphon Konyanee
- School of Medicine, Walailak University, Thaiburi, Thasala, Nakhon Si Thammarat, Thailand
| | - Worapol Sae-Foo
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Apisit Burapapiruin
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences and Research Unit for Plant-Produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand
| | - Waraporn Putalun
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Seiichi Sakamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Waranyoo Phoolcharoen
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences and Research Unit for Plant-Produced Pharmaceuticals, Chulalongkorn University, Bangkok, Thailand
| | - Gorawit Yusakul
- School of Pharmacy, Walailak University, Thaiburi, Thasala, Nakhon Si Thammarat, Thailand.
| |
Collapse
|
8
|
Makkliang F, Juengsanguanpornsuk W, Phaisan S, Sakdamas A, Putalun W, Sakamoto S, Yusakul G. Transformation of Pueraria candollei var. mirifica phytoestrogens using immobilized and free β-glucosidase, a technique for enhancing estrogenic activity. RSC Adv 2021; 11:32067-32076. [PMID: 35495490 PMCID: PMC9042063 DOI: 10.1039/d1ra05109a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 09/23/2021] [Indexed: 11/23/2022] Open
Abstract
Pueraria candollei var. mirifica (PM) has a significant beneficial effect on postmenopausal symptoms associated with estrogen deficiency. However, the estrogenic activity and intestinal absorption of isoflavonoid glycosides derived from PM, such as daidzin and genistin, are significantly lower than those of their aglycones. To enhance the estrogenic activity of the PM extract, we developed β-glucosidase and its immobilized form to increase the PM aglycone content (daidzein and genistein). The enzyme immobilization was done by alginate beads, and the resulting β-glucosidase alginate beads have a diameter of about 0.20 cm. Response surface methodology (RSM) was used to optimize certain parameters, such as the pH, temperature, and ethanol concentration. The optimal conditions of β-glucosidase for daidzein and genistein production were pH of 4.8–4.9, a temperature in the range 46.3–49.1 °C, and ethanol concentration of 10.0–11.0%. The ANOVA results indicated that the design experiment involving free and immobilized β-glucosidase was the best fit by quadratic models, which had adjusted R2 values between 0.8625 and 0.9318. Immobilized β-glucosidase can be reused up to nine times and maintained efficacy of greater than 90%. Treatment of the PM extract with β-glucosidase increased the estrogenic activity of the PM extract by 8.71- to 23.2-fold compared to that of the untreated extract. Thus, β-glucosidase has a high potential for enhancing the estrogenic activity of PM constituents, and it can be applied on an industrial scale to increase the utility of these natural products. Transformation of Pueraria candollei var. mirifica phytoestrogens by β-glucosidase increases estrogenic activity.![]()
Collapse
Affiliation(s)
- Fonthip Makkliang
- School of Languages and General Education, Walailak University, Nakhon Si Thammarat, Thailand
| | | | - Suppalak Phaisan
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
| | - Attapon Sakdamas
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
| | - Waraporn Putalun
- Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Seiichi Sakamoto
- Graduate School of Pharmaceutical Sciences, Kyushu University, Higashi-ku, Fukuoka, Japan
| | - Gorawit Yusakul
- School of Pharmacy, Walailak University, Nakhon Si Thammarat, Thailand
- Biomass and Oil Palm Center of Excellence, Walailak University, Nakhon Si Thammarat, Thailand
| |
Collapse
|
9
|
Quantification of methylisomiroestrol, a phytoestrogen of Pueraria candollei, by enzyme-linked immunosorbent assay in comparison with high-performance liquid chromatography. J Pharm Biomed Anal 2020; 192:113674. [PMID: 33120305 DOI: 10.1016/j.jpba.2020.113674] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/24/2020] [Accepted: 10/03/2020] [Indexed: 11/22/2022]
Abstract
Pueraria candollei is a phytoestrogen-rich herb used to treat estrogen deficiency disorders; however, quality control of P. candollei-related health products is required for consistency of clinical outcomes. Estrogenically active (+)-7-O-methylisomiroestrol could be a potential chemical marker that facilitates the prediction of the overall estrogenic activity of P. candollei. The analytical performance of ELISA using newly produced monoclonal antibodies against methylisomiroestrol was compared with HPLC analysis. The developed indirect competitive ELISA (icELISA) was highly sensitive to methylisomiroestrol for detection, with an LOQ of 2.9 ng/mL, whereas the LOQ was 1.15 μg/mL by HPLC. The results from method validation indicated acceptable precision (1.71-6.37 % and 0.13-2.40 %) and accuracy (99.23-102.54 % and 96.84-101.88 %) of the methylisomiroestrol analysis using icELISA and HPLC. These methods were effectively applied for the determination of the methylisomiroestrol content in P. candollei samples. Apart from the plant tubers, the stem was observed as a source of methylisomiroestrol. The developed ELISA was more effective than HPLC in detecting a small quantity of methylisomiroestrol in the plant samples [0.23 × 10-3% (w/w) to 0.628 × 10-3% (w/w) dry weight]. Therefore, the ELISA could be a useful tool for the standardization of P. candollei, which is the crucial step to improve the quality of plant-derived products.
Collapse
|