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RiboTag Immunoprecipitation in the Germ Cells of the Male Mouse
Published on: March 4, 2020
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Single-cell quantification of ribosome occupancy in early mouse development.
Hakan Ozadam1, Tori Tonn1, Crystal M Han2
1Department of Molecular Biosciences, University of Texas at Austin, Austin, TX, USA.
Nature
|June 21, 2023
Summary
We developed Ribo-ITP to measure translation in single cells during early development. This method reveals how gene translation impacts embryonic development and protein abundance.
Area of Science:
- Developmental Biology
- Molecular Biology
- Genetics
Background:
- Translation regulation is crucial for mammalian embryonic development.
- Previous bulk measurement techniques limited precise translation analysis, including allele-specific studies.
Purpose of the Study:
- To develop a novel method for high-resolution translation profiling in single cells.
- To characterize translation regulation during early mouse embryonic development.
Main Methods:
- Developed a microfluidic isotachophoresis (ITP) approach, Ribo-ITP, for ribosome profiling.
- Applied Ribo-ITP to single oocytes and embryos during early mouse development.
Main Results:
- Identified differential translation efficiency regulating genes in centrosome organization and RNA modification.
- Performed the first analysis of allele-specific ribosome engagement in early development.
- Found ribosome occupancy in oocytes is a key determinant of zygotic protein abundance.
Conclusions:
- Ribo-ITP provides high-coverage, high-resolution ribosome occupancy measurements from ultra-low input samples.
- This approach enables new applications in single-cell and low-input biological research.
- Differential translation efficiency is a key regulatory mechanism in early mammalian development.
