Screening and identification of nanobody against inhibin α-subunit from a Camelus bactrianus phage display library
Ma J. Bodai B. Ma Z. Khalembek K. Xie J. Kadyken R. Baibatshanov M. Kazkhan O.
15 September 2024Elsevier Ltd
Heliyon
2024#10Issue 17
Background: Inhibin is a member of the transforming growth factor family that influences reproduction in animals. Objective: The purpose of this study was to obtain nanobodies from the phage antibody library constructed by us that can specifically bind to inhibin α-subunit. Methods: In this study, camels were immunized with Kazakh sheep inhibin-α protein that expressed in BL21 E. coli, and the camel VHH nanobody phage display library was prepared using nested PCR. The nanobodies specifically binding to inhibin α-subunit in the library were screened by three rounds of immunoaffinity screening and phage enzyme-linked immunosorbent assay (phage ELISA). The functions of the selected nanobodies were identified using molecular simulation docking, ELISA affinity test, and sheep immunity test. Results: A nanobody display library was successfully constructed with a capacity of 1.05 × 1012 CFU, and four inhibin-α-subunit-specific nanobodies with an overall similarity of 69.34 % were screened from the library, namely, Nb-4, Nb-15, Nb-26, and Nb-57. The results of molecular simulation docking revealed that four types of nanobodies were complexed with inhibin-α protein mainly through hydrophobic bonds. Immunity tests revealed that the nanobody Nb-4 could effectively inhibit sheep inhibin A/B and could significantly improve the FSH level in sheep. Conclusion: Four inhibin α-subunit-specific nanobodies with biological functions were successfully screened. To the best of our knowledge, this is a new reproductive immunomodulatory pathway of inhibin α-subunit, which may change the secretion of FSH in the ovary, thus changing the estrous cycle of organisms.
Follicle stimulating hormone , Inhibin α-subunit , Nanobody , Phage display
Text of the article Перейти на текст статьи
College of Animal Science and Technology, Shihezi University, Xinjiang, Shihezi, 832000, China
Agricultural Development Service Center of Kalabulegen Township, Fuyun County, Altay Region, Xinjiang, 836103, China
Department of Production Technology of Livestock Products, Kazakh National Agrarian Research University, Almaty Province, 050010, Kazakhstan
Department of Forest Resources and Hunting, Kazakh National Agrarian Research University, Almaty Province, 050010, Kazakhstan
College of Animal Science and Technology
Agricultural Development Service Center of Kalabulegen Township
Department of Production Technology of Livestock Products
Department of Forest Resources and Hunting
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026