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Updated: May 21, 2026
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Profiling Individual Human Embryonic Stem Cells by Quantitative RT-PCR
Published on: May 29, 2014
Quantitative proteomic analysis of human embryonic stem cell differentiation by 8-plex iTRAQ labelling.
Mahdieh Jadaliha1, Hyoung-Joo Lee, Mohammad Pakzad
1Department of Molecular Systems Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
Plos One
|June 23, 2012
Summary
Researchers analyzed proteins in human embryonic stem cells (hESCs) during differentiation. They identified key proteins involved in cell growth and self-renewal, revealing molecular mechanisms of stem cell development.
Area of Science:
- Stem Cell Biology
- Proteomics
- Molecular Mechanisms
Background:
- Understanding human embryonic stem cells (hESCs) self-renewal and pluripotency is crucial for regenerative medicine.
- Gene expression analysis helps elucidate the molecular pathways governing hESC proliferation and differentiation.
Purpose of the Study:
- To identify proteins and molecular mechanisms underlying human embryonic stem cell (hESC) proliferation and differentiation.
- To compare protein expression profiles between undifferentiated hESCs and those undergoing spontaneous differentiation.
Main Methods:
- Utilized isobaric tags for relative and absolute quantification (iTRAQ) to analyze protein expression.
- Compared protein profiles of undifferentiated hESCs with hESCs at various stages of embryoid body (EB) formation.
Main Results:
- Identified 156 differentially expressed proteins related to cell proliferation, apoptosis, transcription, translation, mRNA processing, and protein synthesis.
- Observed downregulation of proteins involved in nucleic acid binding, protein synthesis, and integrin signaling during differentiation.
- Found upregulation of cytoskeleton proteins during hESC differentiation.
Conclusions:
- The study provides novel insights into the molecular mechanisms governing hESC proliferation and differentiation.
- Protein expression changes identified by iTRAQ contribute to understanding stem cell fate determination.
- Findings highlight the dynamic proteomic landscape during hESC development.
