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Related Experiment Video

Updated: Jun 27, 2026

Single Cell Transfection in Chick Embryos
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Efficient Method for Liposome-Based Gene Transfer in Cattle Embryos.

Thays Antunes1, Ana Beatriz Dos Reis Bartoli1, Marcella Pecora Milazzotto1

  • 1Laboratory of Embryonic Metabolism and Epigenetics, Centre of Natural and Human Science, Federal University of ABC, Santo Andre, SP, Brazil.

Reproduction in Domestic Animals = Zuchthygiene
|October 14, 2024
PubMed
Summary
This summary is machine-generated.

A new single embryo culture system improves cattle embryo development and enables efficient gene editing. This method successfully silences SAMTOR genes in zona-free embryos, advancing genetic research in reproduction.

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Area of Science:

  • Reproductive Biology
  • Molecular Genetics
  • Animal Biotechnology

Background:

  • In vitro embryo production (IVP) is vital for cattle genetic enhancement and lineage preservation.
  • Efficient delivery of genetic material is essential for modifying cattle embryos.
  • Current methods face challenges in optimizing gene manipulation and embryo development.

Purpose of the Study:

  • To evaluate a novel single embryo culture system for developing genetically modified zona-free (ZF) cattle embryos.
  • To assess the efficacy of liposome-based SAMTOR target siRNA transfer in individually cultured ZF embryos.
  • To validate the suitability of the single-culture system for subsequent analytical applications.

Main Methods:

  • Development and implementation of a single embryo culture system for ZF cattle embryos.
  • Application of liposome-based siRNA for SAMTOR gene silencing.
  • Assessment of embryo cleavage and blastocyst rates.
  • Quantification of SAMTOR transcript levels in 8-16 cell embryos.
  • Measurement of total protein content in spent culture media.

Main Results:

  • The single embryo culture system led to increased cleavage rates with minimal impact on blastocyst rates.
  • Effective SAMTOR gene silencing was achieved in individually cultured ZF embryos.
  • Transcript levels of SAMTOR were significantly reduced in treated embryos compared to controls.
  • Total protein content analysis confirmed the system's suitability for embryo-media interaction studies.

Conclusions:

  • The novel single embryo culture system supports efficient development of ZF cattle embryos.
  • This system facilitates effective gene silencing, enhancing genetic editing capabilities.
  • The approach provides a robust platform for advanced reproductive research and genetic applications in cattle.