Effects of anti-rainbow trout germ-cell monoclonal antibody on germ cells and gonadal tissues in rainbow trout (Oncorhynchus mykiss)

The development of sterilization technology is important to improve the production efficacy of aquaculture and prevent genetically modified fish from escaping. Immunosterilization is a novel sterilization method that has already been used in mammals. In this study, anti-rainbow trout germ-cell monoc...

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Main Authors: Kenji, Takase, Akihiro, Harakawa, Masaki, Yokota, Lau, Lik Ming, Yuichi, Amano, Kensuke, Ichida, Keiichiro, Koiwai, Ikuo, Hirono, Hidehiro, Kondo
Format: Article
Language:English
Published: Elsevier B.V. 2025
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Online Access:http://ir.unimas.my/id/eprint/46183/1/anti.pdf
http://ir.unimas.my/id/eprint/46183/
https://www.sciencedirect.com/science/article/abs/pii/S0044848624010676
https://doi.org/10.1016/j.aquaculture.2024.741605
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spelling my.unimas.ir.461832024-10-02T01:10:34Z http://ir.unimas.my/id/eprint/46183/ Effects of anti-rainbow trout germ-cell monoclonal antibody on germ cells and gonadal tissues in rainbow trout (Oncorhynchus mykiss) Kenji, Takase Akihiro, Harakawa Masaki, Yokota Lau, Lik Ming Yuichi, Amano Kensuke, Ichida Keiichiro, Koiwai Ikuo, Hirono Hidehiro, Kondo SH Aquaculture. Fisheries. Angling The development of sterilization technology is important to improve the production efficacy of aquaculture and prevent genetically modified fish from escaping. Immunosterilization is a novel sterilization method that has already been used in mammals. In this study, anti-rainbow trout germ-cell monoclonal antibodies (anti-GC mAbs) were injected into immature rainbow trout Oncorhynchus mykiss, and their effects were analyzed. First, anti-GC mAbs labeled with Alexa Fluor 488 were injected into the body cavity of larvae 20 days (group 1) and 102 days (group 2) after fertilization. Second, anti-GC mAbs were injected into the body cavity of yearling trout (group 3), and their impacts on gonadal tissue were analyzed in terms of histology and gene expression levels. As a result, anti-GC mAbs were observed to bind to some primordial GCs in group 1, whereas there were no obvious positive cells in male testes of group 2. In contrast, green fluorescent signals were observed in an arrangement parallel to the ovarian lamina in female ovaries of group 2, which was similar to the arrangement of positive signals on ovarian tissue sections immunostained with anti-GC mAbs. GCs in group 1 were observed again after 76 days, and double-positive cells remained. In group 3, there were changes in the expression levels of GC-specific genes, but the changes were not seen as biologically meaningful. Moreover, there was no histological abnormality in gonadal tissues after immunization. In conclusion, these results suggested that anti-GC mAbs could only reach GCs in early developmental stages or in the ovary, and injection of anti-GCs mAbs did not have harmful effects on GCs after binding. Elsevier B.V. 2025-01-30 Article PeerReviewed text en http://ir.unimas.my/id/eprint/46183/1/anti.pdf Kenji, Takase and Akihiro, Harakawa and Masaki, Yokota and Lau, Lik Ming and Yuichi, Amano and Kensuke, Ichida and Keiichiro, Koiwai and Ikuo, Hirono and Hidehiro, Kondo (2025) Effects of anti-rainbow trout germ-cell monoclonal antibody on germ cells and gonadal tissues in rainbow trout (Oncorhynchus mykiss). Aquaculture, 595 (Pt.2). ISSN 1873-5622 https://www.sciencedirect.com/science/article/abs/pii/S0044848624010676 https://doi.org/10.1016/j.aquaculture.2024.741605
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
topic SH Aquaculture. Fisheries. Angling
spellingShingle SH Aquaculture. Fisheries. Angling
Kenji, Takase
Akihiro, Harakawa
Masaki, Yokota
Lau, Lik Ming
Yuichi, Amano
Kensuke, Ichida
Keiichiro, Koiwai
Ikuo, Hirono
Hidehiro, Kondo
Effects of anti-rainbow trout germ-cell monoclonal antibody on germ cells and gonadal tissues in rainbow trout (Oncorhynchus mykiss)
description The development of sterilization technology is important to improve the production efficacy of aquaculture and prevent genetically modified fish from escaping. Immunosterilization is a novel sterilization method that has already been used in mammals. In this study, anti-rainbow trout germ-cell monoclonal antibodies (anti-GC mAbs) were injected into immature rainbow trout Oncorhynchus mykiss, and their effects were analyzed. First, anti-GC mAbs labeled with Alexa Fluor 488 were injected into the body cavity of larvae 20 days (group 1) and 102 days (group 2) after fertilization. Second, anti-GC mAbs were injected into the body cavity of yearling trout (group 3), and their impacts on gonadal tissue were analyzed in terms of histology and gene expression levels. As a result, anti-GC mAbs were observed to bind to some primordial GCs in group 1, whereas there were no obvious positive cells in male testes of group 2. In contrast, green fluorescent signals were observed in an arrangement parallel to the ovarian lamina in female ovaries of group 2, which was similar to the arrangement of positive signals on ovarian tissue sections immunostained with anti-GC mAbs. GCs in group 1 were observed again after 76 days, and double-positive cells remained. In group 3, there were changes in the expression levels of GC-specific genes, but the changes were not seen as biologically meaningful. Moreover, there was no histological abnormality in gonadal tissues after immunization. In conclusion, these results suggested that anti-GC mAbs could only reach GCs in early developmental stages or in the ovary, and injection of anti-GCs mAbs did not have harmful effects on GCs after binding.
format Article
author Kenji, Takase
Akihiro, Harakawa
Masaki, Yokota
Lau, Lik Ming
Yuichi, Amano
Kensuke, Ichida
Keiichiro, Koiwai
Ikuo, Hirono
Hidehiro, Kondo
author_facet Kenji, Takase
Akihiro, Harakawa
Masaki, Yokota
Lau, Lik Ming
Yuichi, Amano
Kensuke, Ichida
Keiichiro, Koiwai
Ikuo, Hirono
Hidehiro, Kondo
author_sort Kenji, Takase
title Effects of anti-rainbow trout germ-cell monoclonal antibody on germ cells and gonadal tissues in rainbow trout (Oncorhynchus mykiss)
title_short Effects of anti-rainbow trout germ-cell monoclonal antibody on germ cells and gonadal tissues in rainbow trout (Oncorhynchus mykiss)
title_full Effects of anti-rainbow trout germ-cell monoclonal antibody on germ cells and gonadal tissues in rainbow trout (Oncorhynchus mykiss)
title_fullStr Effects of anti-rainbow trout germ-cell monoclonal antibody on germ cells and gonadal tissues in rainbow trout (Oncorhynchus mykiss)
title_full_unstemmed Effects of anti-rainbow trout germ-cell monoclonal antibody on germ cells and gonadal tissues in rainbow trout (Oncorhynchus mykiss)
title_sort effects of anti-rainbow trout germ-cell monoclonal antibody on germ cells and gonadal tissues in rainbow trout (oncorhynchus mykiss)
publisher Elsevier B.V.
publishDate 2025
url http://ir.unimas.my/id/eprint/46183/1/anti.pdf
http://ir.unimas.my/id/eprint/46183/
https://www.sciencedirect.com/science/article/abs/pii/S0044848624010676
https://doi.org/10.1016/j.aquaculture.2024.741605
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score 13.209306