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Cho CH, Park CY, Chun HS, Park TJ, Park JP. Antibody-free and selective detection of okadaic acid using an affinity peptide-based indirect assay. Food Chem 2023; 422:136243. [PMID: 37141762 DOI: 10.1016/j.foodchem.2023.136243] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 04/19/2023] [Accepted: 04/24/2023] [Indexed: 05/06/2023]
Abstract
Okadaic acid (OA) is a type of marine biotoxin produced by some species of dinoflagellates in marine environments. Consumption of shellfish contaminated with OA can cause diarrhetic shellfish poisoning (DSP) in humans with symptoms that typically include abdominal pain, diarrhea and vomiting. In this study, we developed an affinity peptide-based direct competition enzyme-linked immunosorbent assay (dc-ELISA) for the detection of OA in real samples. The OA-specific peptide was successfully identified via M13 biopanning and a series of peptides were chemically synthesized and characterized their recognition activities. The dc-ELISA system showed good sensitivity and selectivity with a half-maximal inhibitory concentration (IC50) of 148.7 ng/mL and a limit of detection (LOD) of 5.41 ng/mL (equivalent, 21.52 ng/g). Moreover, the effectiveness of the developed dc-ELISA was validated using OA-spiked shellfish samples, and the developed dc-ELISA showed a high recovery rate. These results suggest that the affinity peptide-based dc-ELISA can be a promising tool for detecting OA in shellfish samples.
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Affiliation(s)
- Chae Hwan Cho
- Department of Food Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Chan Yeong Park
- Department of Chemistry, Institute of Interdisciplinary Convergence Research, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea
| | - Hyang Sook Chun
- Department of Food Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Tae Jung Park
- Department of Chemistry, Institute of Interdisciplinary Convergence Research, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea.
| | - Jong Pil Park
- Department of Food Science and Technology, Chung-Ang University, Anseong 17546, Republic of Korea.
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Thongkum W, Yasamut U, Chupradit K, Sakkhachornphop S, Wipasa J, Sornsuwan K, Juntit OA, Pornprasit R, Thongkamwitoon W, Chaichanan J, Khaoplab J, Chanpradab C, Kasinrerk W, Tayapiwatana C. Latticed Gold Nanoparticle Conjugation via Monomeric Streptavidin in Lateral Flow Assay for Detection of Autoantibody to Interferon-Gamma. Diagnostics (Basel) 2021; 11:diagnostics11060987. [PMID: 34072539 PMCID: PMC8229537 DOI: 10.3390/diagnostics11060987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/23/2021] [Accepted: 05/27/2021] [Indexed: 11/17/2022] Open
Abstract
Adult-onset immunodeficiency syndrome (AOID) patients with autoantibodies (autoAbs) against interferon-gamma (IFN-γ) generally suffer from recurrent and recalcitrant disseminated non-tuberculous mycobacterial diseases. Since the early stages of AOID do not present specific symptoms, diagnosis and treatment of the condition are not practical. A simplified diagnostic method for differentiating AOID from other immunodeficiencies, such as HIV infection, was created. Anti-IFN-γ is generally identified using enzyme-linked immunosorbent assay (ELISA), which involves an instrument and a cumbersome process. Recombinant IFN-γ indirectly conjugated to colloidal gold was used in the modified immunochromatographic (IC) strips. The biotinylated-IFN-γ was incorporated with colloidal-gold-labeled 6HIS-maltose binding protein-monomeric streptavidin (6HISMBP-mSA) and absorbed at the conjugate pad. The efficacy of the IC strip upon applying an anti-IFN-γ autoAb cut-off ELISA titer of 2500, the sensitivity and specificity were 84% and 90.24%, respectively. When a cut-off ELISA titer of 500 was applied, the sensitivity and specificity were 73.52% and 100%, respectively.
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Affiliation(s)
- Weeraya Thongkum
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (W.T.); (U.Y.); (K.C.); (K.S.); (O.-a.J.); (W.K.)
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand;
- Center of Innovative Immunodiagnostic Development, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Umpa Yasamut
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (W.T.); (U.Y.); (K.C.); (K.S.); (O.-a.J.); (W.K.)
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand;
- Center of Innovative Immunodiagnostic Development, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Koollawat Chupradit
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (W.T.); (U.Y.); (K.C.); (K.S.); (O.-a.J.); (W.K.)
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Supachai Sakkhachornphop
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand;
- Research Institute for Health Sciences, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Jiraprapa Wipasa
- Research Institute for Health Sciences, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Kanokporn Sornsuwan
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (W.T.); (U.Y.); (K.C.); (K.S.); (O.-a.J.); (W.K.)
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - On-anong Juntit
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (W.T.); (U.Y.); (K.C.); (K.S.); (O.-a.J.); (W.K.)
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Rawiwan Pornprasit
- Bio Innovation Building, Mahidol University, Nakhon Pathom 73170, Thailand; (R.P.); (W.T.); (J.C.); (J.K.); (C.C.)
| | - Wanwisa Thongkamwitoon
- Bio Innovation Building, Mahidol University, Nakhon Pathom 73170, Thailand; (R.P.); (W.T.); (J.C.); (J.K.); (C.C.)
| | - Jirapan Chaichanan
- Bio Innovation Building, Mahidol University, Nakhon Pathom 73170, Thailand; (R.P.); (W.T.); (J.C.); (J.K.); (C.C.)
| | - Jaruwan Khaoplab
- Bio Innovation Building, Mahidol University, Nakhon Pathom 73170, Thailand; (R.P.); (W.T.); (J.C.); (J.K.); (C.C.)
| | - Chonnikarn Chanpradab
- Bio Innovation Building, Mahidol University, Nakhon Pathom 73170, Thailand; (R.P.); (W.T.); (J.C.); (J.K.); (C.C.)
| | - Watchara Kasinrerk
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (W.T.); (U.Y.); (K.C.); (K.S.); (O.-a.J.); (W.K.)
- Center of Innovative Immunodiagnostic Development, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chatchai Tayapiwatana
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; (W.T.); (U.Y.); (K.C.); (K.S.); (O.-a.J.); (W.K.)
- Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand;
- Center of Innovative Immunodiagnostic Development, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence: ; Tel.: +66-81-8845141
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