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Nikolaev B, Yakovleva L, Fedorov V, Yudintceva N, Ryzhov V, Marchenko Y, Ischenko A, Zhakhov A, Dobrodumov A, Combs SE, Gao H, Shevtsov M. Magnetic Relaxation Switching Assay Using IFNα-2b-Conjugated Superparamagnetic Nanoparticles for Anti-Interferon Antibody Detection. BIOSENSORS 2023; 13:624. [PMID: 37366989 DOI: 10.3390/bios13060624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/21/2023] [Accepted: 06/02/2023] [Indexed: 06/28/2023]
Abstract
Type I interferons, particularly IFNα-2b, play essential roles in eliciting adaptive and innate immune responses, being implicated in the pathogenesis of various diseases, including cancer, and autoimmune and infectious diseases. Therefore, the development of a highly sensitive platform for analysis of either IFNα-2b or anti-IFNα-2b antibodies is of high importance to improve the diagnosis of various pathologies associated with the IFNα-2b disbalance. For evaluation of the anti-IFNα-2b antibody level, we have synthesized superparamagnetic iron oxide nanoparticles (SPIONs) coupled with the recombinant human IFNα-2b protein (SPIONs@IFNα-2b). Employing a magnetic relaxation switching assay (MRSw)-based nanosensor, we detected picomolar concentrations (0.36 pg/mL) of anti-INFα-2b antibodies. The high sensitivity of the real-time antibodies' detection was ensured by the specificity of immune responses and the maintenance of resonance conditions for water spins by choosing a high-frequency filling of short radio-frequency pulses of the generator. The formation of a complex of the SPIONs@IFNα-2b nanoparticles with the anti-INFα-2b antibodies led to a cascade process of the formation of nanoparticle clusters, which was further enhanced by exposure to a strong (7.1 T) homogenous magnetic field. Obtained magnetic conjugates exhibited high negative MR contrast-enhancing properties (as shown by NMR studies) that were also preserved when particles were administered in vivo. Thus, we observed a 1.2-fold decrease of the T2 relaxation time in the liver following administration of magnetic conjugates as compared to the control. In conclusion, the developed MRSw assay based on SPIONs@IFNα-2b nanoparticles represents an alternative immunological probe for the estimation of anti-IFNα-2b antibodies that could be further employed in clinical studies.
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Affiliation(s)
- Boris Nikolaev
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), Tikhoretsky Ave., 4, 194064 St. Petersburg, Russia
| | - Ludmila Yakovleva
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), Tikhoretsky Ave., 4, 194064 St. Petersburg, Russia
| | - Viacheslav Fedorov
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), Tikhoretsky Ave., 4, 194064 St. Petersburg, Russia
- Personalized Medicine Centre, Almazov National Medical Research Centre, Akkuratova Str. 2, 197341 St. Petersburg, Russia
- Department of Inorganic Chemistry and Biophysics, Saint-Petersburg State University of Veterinary Medicine, Chernigovskaya Str. 5, 196084 St. Petersburg, Russia
| | - Natalia Yudintceva
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), Tikhoretsky Ave., 4, 194064 St. Petersburg, Russia
- Personalized Medicine Centre, Almazov National Medical Research Centre, Akkuratova Str. 2, 197341 St. Petersburg, Russia
| | - Vyacheslav Ryzhov
- Petersburg Nuclear Physics Institute, National Research Centre "Kurchatov Institute", 188300 Gatchina, Russia
| | - Yaroslav Marchenko
- Petersburg Nuclear Physics Institute, National Research Centre "Kurchatov Institute", 188300 Gatchina, Russia
| | - Alexander Ischenko
- Laboratory of Hybridoma Technologies, Saint-Petersburg Pasteur Institute, Mira Str. 14, 197101 St. Petersburg, Russia
| | - Alexander Zhakhov
- Laboratory of Hybridoma Technologies, Saint-Petersburg Pasteur Institute, Mira Str. 14, 197101 St. Petersburg, Russia
| | - Anatoliy Dobrodumov
- Department of Nuclear Magnetic Resonance, Institute of Macromolecular Compounds of the Russian Academy of Sciences (RAS), Bolshoi pr. 31, 199004 St. Petersburg, Russia
| | - Stephanie E Combs
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaninger Str. 22, 81675 Munich, Germany
| | - Huile Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Maxim Shevtsov
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), Tikhoretsky Ave., 4, 194064 St. Petersburg, Russia
- Personalized Medicine Centre, Almazov National Medical Research Centre, Akkuratova Str. 2, 197341 St. Petersburg, Russia
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaninger Str. 22, 81675 Munich, Germany
- Laboratory of Biomedical Cell Technologies, Far Eastern Federal University, 690091 Vladivostok, Russia
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Khan WA, Malik A, Khan MWA. Depression linked to higher antibodies production against estrogenized insulin in type 1 diabetes. Int Immunopharmacol 2020; 86:106712. [DOI: 10.1016/j.intimp.2020.106712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 06/12/2020] [Accepted: 06/13/2020] [Indexed: 10/24/2022]
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Khan WA. 16 α-Hydroxyestrone induced adduct generate high affinity autoantibodies in SLE. Adv Med Sci 2019; 64:72-78. [PMID: 30530105 DOI: 10.1016/j.advms.2018.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 10/23/2018] [Accepted: 11/23/2018] [Indexed: 11/19/2022]
Abstract
PURPOSE Increased 16 α-hydroxyestrone (16 α-OHE1) and autoantibodies against histone H1 (H1) have been well described in systemic lupus erythematosus (SLE), but the combination effects of 16 α-OHE1 and H1 remains unclear. Here, we tried to assess the affinity and binding specificity of SLE autoantibodies against the 16 α-OHE1-H1 adduct. IgG was induced against this adduct and was also used as immunochemical probe for the estimation of 16 α-OHE1 in the serum of SLE patients. MATERIALS AND METHODS The affinity and binding specificities of SLE autoantibodies against 16 α-OHE1-H1 were determined by direct binding and inhibition ELISA as well as quantitative precipitation titration in 60 patients and 30 control subjects. RESULTS Purified SLE autoantibodies showed greater recognition to 16 α-OHE1-H1 over H1 (p < 0.05) or 16 α-OHE1 (p < 0.001). The relative affinity of SLE autoantibodies for 16 α-OHE1-H1, H1 and 16 α-OHE1 was 1.41 × 10-7, 1.31 × 10-6, and 1.03 × 10-6, respectively. The concentration of 16 α-OHE1 in the sera of SLE patients was significantly higher than controls (p < 0.05) as estimated by anti-16 α-OHE1-H1 antibodies. CONCLUSIONS High affinity of 16 α-OHE1-H1 with SLE autoantibodies might suggest an antigenic role of this adduct in the production of these autoantibodies. The anti-16 α-OHE1-H1 antibody is a good immunochemical probe to measure 16 α-OHE1 in different SLE sera.
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Affiliation(s)
- Wahid Ali Khan
- Department of Clinical Biochemistry, College of Medicine, King Khalid University, Abha, Saudi Arabia.
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Recombinant interferon alpha 2b in rheumatoid arthritis: good antigen for rheumatoid arthritis antibodies. Cent Eur J Immunol 2018; 43:58-68. [PMID: 29736147 PMCID: PMC5927174 DOI: 10.5114/ceji.2018.74874] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 04/18/2017] [Indexed: 02/08/2023] Open
Abstract
Aim of the study Interferon alpha-induced arthritis and activation of the type 1 interferon pathway during rheumatoid arthritis (RA) has been well documented but the underlying mechanism remains unclear. This study addressed the binding specificity of antibodies with recombinant interferon alpha 2b (rIFN α-2b) in sera from different RA patients. Utilization of anti-hrIFN α-2b antibodies as a probe for estimation of interferon α-2b concentration in RA patients’ synovial fluid (SF) was also investigated. Material and methods Binding specificities of antibodies from the sera of 60 RA patients and 35 controls subjects were studied by direct binding, inhibition ELISA, and quantitative precipitation titration. Inhibition ELISA was also used to estimate patients’ SF interferon α-2b concentrations. Results RA IgG from patients’ sera showed strong recognition to hrIFN α-2b in comparison to commercially available interferon (IFN α-2b) (p < 0.05) or the gene encoding this interferon (IFN α-2b gene) (p < 0.05). The affinity of RA antibodies for rIFN α-2b (1.10 × 10–7 M) was found to be high as assessed by Langmuir plot. No significant difference in the level of interferon α in the SF of RA patients was observed as compared to the healthy controls. Conclusions rIFN α-2b presents unique epitopes that might explain the possible antigenic role in the induction of RA antibodies and anti-rIFN α-2b antibodies represent an alternative immunological probe for the estimation of interferon α in the SF of RA patients.
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Detection of 16α-Hydroxyestrone-histone 1 Adduct as High-Affinity Antigen for Rheumatoid Arthritis Autoantibodies. Arch Immunol Ther Exp (Warsz) 2018; 66:379-388. [PMID: 29713726 DOI: 10.1007/s00005-018-0512-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 04/12/2018] [Indexed: 10/17/2022]
Abstract
Increased concentrations of 16α-hydroxyestrone (16α-OHE1) have been observed in rheumatoid arthritis (RA), but the underlying mechanism of this remains elusive. Here we aimed to identify the role played by 16α-OHE1 in RA. In 40 RA patients, the specificities of antibodies from the sera of these patients were checked by direct binding, inhibition ELISA, and quantitative precipitation titration. Competition ELISA was also used for the estimation of 16α-OHE1 in the serum of different RA patients. RA IgG from a patient's sera showed strong recognition to 16α-OHE1-H1 (histone 1) adduct in comparison to control subjects (p < 0.001), as the formation of this adduct brings out various biochemical changes that might generate neo-epitopes, which have been well-recognized by these antibodies. The affinity of RA antibodies for 16α-OHE1-H1 (1.10 × 10- 7 M) was high, as detected by the Langmuir plot. Comparing RA patients to the controls, no significant differences were detected in the level of 16α-OHE1 or 2-hydroxyestrone/16α-OHE1 ratio. 16α-OHE1-H1 might have an antigenic role and function as a high-affinity antigen for RA autoantibodies and, therefore, could be used as a biomarker for this disease.
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Khan WA. Recombinant Interferon Alpha-2b is a High-Affinity Antigen for Type 1 Diabetes Autoantibodies. Can J Diabetes 2016; 41:217-223. [PMID: 28024793 DOI: 10.1016/j.jcjd.2016.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 06/12/2016] [Accepted: 10/03/2016] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Type 1 diabetes results from T-cell-mediated destruction of the beta cells of the pancreas and is associated with several autoimmune phenomena. Many studies have suggested the involvement of interferon alpha (IFN α) in the development of type 1 diabetes, but the exact mechanism remains unclear. In this study, the binding of type 1 diabetes antibodies with recombinant interferon alpha-2b (hrIFN α-2b), their gene (cIFN α-2b gene) and commercially available interferon α-2b (IFN α-2b) were assessed. Furthermore, we also sought to use anti-hrIFN α-2b antibodies as a probe for the estimation of plasma IFN α in patients with type 1 diabetes. METHODS The binding specificity of antibodies was analyzed by direct binding, inhibition ELISA and quantitative precipitin titration in 45 patients with type 1 diabetes and 30 control subjects. Competition ELISA was also used to estimate INF α in the serum of patients with type 1 diabetes. RESULTS Antibodies from type 1 diabetes sera, purified in a protein A-agarose matrix, exhibited greater recognition of hrIFN α-2b than IFN α-2b (p<0.05) and cIFN α-2b gene (p<0.001). The relative affinity of type 1 diabetes antibodies for the hrIFN α-2b, IFN α-2b and cIFN α-2b genes was found to be 1.34×10-7, 1.28×10-6 and 1.13×10-6, respectively. The concentration of plasma INF α evaluated by induced antibodies was found to be significantly higher than in controls (p<0.05). CONCLUSIONS High binding of hrIFN α-2b with IgG from patients with type 1 diabetes might suggest involvement of hrIFN α-2b in type 1 diabetes, especially as an antigenic agent. Anti-hrIFN α-2b antibodies were shown to be good probes for estimation of plasma INF α in patients with type 1 diabetes.
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Affiliation(s)
- Wahid Ali Khan
- Department of Clinical Biochemistry, College of Medicine, King Khalid University, Abha, Saudi Arabia.
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