University of Oulu

Ramanaviciene A, Popov A, Baliunaite E, Brasiunas B, Kausaite-Minkstimiene A, Tamer U, Kirdaite G, Bernotiene E, Mobasheri A. Magneto-Immunoassay for the Detection and Quantification of Human Growth Hormone. Biosensors. 2022; 12(2):65.

Magneto-immunoassay for the detection and quantification of human growth hormone

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Author: Ramanaviciene, Almira1,2; Popov, Anton1,2; Baliunaite, Ema2;
Organizations: 1Department of Immunology, State Research Institute Centre for Innovative Medicine, LT-08406 Vilnius, Lithuania
2Nanotechnas—Center of Nanotechnology and Materials Science, Faculty of Chemistry and Geosciences, Institute of Chemistry, Vilnius University, LT-03225 Vilnius, Lithuania
3Department of Analytical Chemistry, Faculty of Pharmacy, Gazi University, Ankara TR-06330, Turkey
4Department of Experimental, Preventive and Clinical Medicine, State Research Institute Centre for Innovative Medicine, LT-08406 Vilnius, Lithuania
5Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, LT-08406 Vilnius, Lithuania
6Department of Chemistry and Bioengineering, The Faculty of Fundamental Sciences, Vilnius Gediminas Technical University, Vilnius-Tech, LT-10223 Vilnius, Lithuania
7Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, FI-90014 Oulu, Finland
8Departments of Orthopedics, Rheumatology and Clinical Immunology, University Medical Center Utrecht, 508 GA Utrecht, The Netherlands
9Department of Joint Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
10World Health Organization Collaborating Center for Public Health Aspects of Musculoskeletal Health and Aging, Université de Liège, 4000 Liège, Belgium
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.9 MB)
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Language: English
Published: Multidisciplinary Digital Publishing Institute, 2022
Publish Date: 2022-05-16


Physiological and endocrine maintenance of a normal human growth hormone (hGH) concentration is crucial for growth, development, and a number of essential biological processes. In this study, we describe the preparation and characterization of magnetic nanoparticles coated with a gold shell (MNPs-Au). The optimal surface concentration of monoclonal anti-hGH antibodies (m-anti-hGH) on magnetic nanoparticles, as well as conditions that decrease non-specific interactions during the magneto-immunoassay, were elaborated. After the selective recognition, separation, and pre-concentration of hGH by MNPs-Au/m-anti-hGH and the hGH interaction with specific polyclonal biotin-labeled antibodies (p-anti-hHG-B) and streptavidin modified horseradish peroxidase (S-HRP), the MNPs-Au/m-anti-hGH/hGH/p-anti-hGH-B/S-HRP immunoconjugate was formed. The concentration of hGH was determined after the addition of 3,3′,5,5′-tetramethylbenzidine and hydrogen peroxide substrate solution for HRP; the absorbance at 450 nm was registered after the addition of STOP solution. The developed sandwich-type colorimetric magneto-immunoassay is characterized by a clinically relevant linear range (from 0.1 to 5.0 nmol L⁻¹, R² 0.9831), low limit of detection (0.082 nmol L⁻¹), and negligible non-specific binding of other antibodies or S-HRP. The obtained results demonstrate the applicability of the developed magneto-immunoassay for the concentration and determination of hGH in the serum. Additionally, important technical solutions for the development of the sandwich-type colorimetric magneto-immunoassay are discussed.

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Series: Biosensors
ISSN: 2079-6374
ISSN-E: 2079-6374
ISSN-L: 2079-6374
Volume: 12
Issue: 2
Article number: 65
DOI: 10.3390/bios12020065
Type of Publication: A1 Journal article – refereed
Field of Science: 3111 Biomedicine
Funding: This research was funded by the European Regional Development Fund through the Research Council of Lithuania according to the Programme Attracting Foreign Researchers for Research Implementation, Grant No. 01.2.2-LMT-K-718-02-0022.
Copyright information: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (