DOI: 10.1002/ame2.12514
Generation of transgenic chicken through ovarian injection
Jinghua Jiang1
Caiying Wang1
Xuguang Du1
Fei Gao2
Sen Wu2
1.Frontiers Science Center for Molecular Design Breeding(MOE),State Key Laboratory of Animal Biotech Breeding,College of Biological Sciences,China Agricultural University,Beijing,China2.Frontiers Science Center for Molecular Design Breeding(MOE),State Key Laboratory of Animal Biotech Breeding,College of Biological Sciences,China Agricultural University,Beijing,China;Sanya Institute of China Agricultural University,Sanya,China
摘要：Background:Traditional DNA microinjection methods used in mammals are difficult to apply to avian species due to their unique reproductive characteristics.Genetic manipulation in chickens,particularly involving immature follicles within living ovaries,has not been extensively explored.This study seeks to establish an efficient method for generating transgenic chickens through ovarian injection,potentially bypassing the challenges associated with primordial germ cell(PGC)manipulation and fertilized egg microinjection.
Methods:Hens were anesthetized and underwent a surgical procedure to access the ovary for DNA injection into immature follicles.The study used liposomes to deliver GFP-expressing plasmids at various dosages.After injection,hens recovered,and their eggs were fertilized through artificial insemination.
Results:Transgenic chickens were successfully generated in one generation without needing GO founders.The injection of 20 μg plasmid yielded the highest transgenic efficiency at 12.1％.GFP-positive embryos were confirmed through microscopy,and successful transgene expression was validated at the tissue level using immunostain-ing.TERT and GFP elements introduced in the G1 generation resulted in 4.1％positive transgene rates,as confirmed by PCR and Southern blotting.
Conclusion:This ovarian injection method offers a promising alternative for avian ge-netic manipulation,bypassing complex PGC procedures and enabling direct genera-tion of G1 transgenic chickens.This technique simplifies the transgenic process for chickens and has the potential to be adapted for other avian species,especially those without established PGCs culture systems.
机标关键词：transgenicgenerationinjectionthroughchickenovarian
论文发表日期：2025-01-28
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：7( 187-193 )
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