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Quantitative Analysis of Protein Expression to Study Lineage Specification in Mouse Preimplantation Embryos
11:25

Quantitative Analysis of Protein Expression to Study Lineage Specification in Mouse Preimplantation Embryos

Published on: February 22, 2016

Transcriptome analysis of mouse stem cells and early embryos.

Alexei A Sharov1, Yulan Piao, Ryo Matoba

  • 1National Institute on Aging, Baltimore, Maryland, USA.

Plos Biology
|December 24, 2003
PubMed
Summary

Researchers mapped mouse gene expression to understand cellular potency, identifying 977 new genes and potential markers for stem cells and early embryos. This work aids regenerative medicine research.

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Area of Science:

  • Molecular Biology
  • Developmental Biology
  • Stem Cell Biology

Background:

  • Cellular potency is crucial for biological understanding and stem cell therapeutics.
  • Transcriptome analysis is a key step in characterizing pluripotent cells.

Purpose of the Study:

  • To create a comprehensive gene expression index for early mouse development and stem cells.
  • To identify genes characteristic of different developmental stages and cell types.
  • To establish a molecular scale for cellular potency.

Main Methods:

  • High-throughput EST sequencing from oocytes, blastocysts, embryonic, and adult stem cells.
  • Clustering of EST sequences with public data to build a gene index.
  • Analysis of EST frequency for gene expression profiling.
  • Principal Component Analysis (PCA) to identify genes with decreasing expression across developmental stages.

Main Results:

  • Generated 249,200 high-quality EST sequences, contributing to an index of ~30,000 mouse genes.
  • Discovered 977 novel mouse genes.
  • Identified gene expression patterns distinguishing preimplantation embryos, embryonic stem cells, and adult stem cells.
  • Identified 88 genes with decreasing expression from oocytes to newborn tissues, forming a basis for a molecular potency scale.

Conclusions:

  • The study provides a valuable resource of gene sequences and cDNA clones for early mouse development and stem cell research.
  • Identified genes can serve as potential markers and offer insights into cell function.
  • This resource accelerates research in reproductive and regenerative medicine.