Common Surface Protein Pattern of Human Embryonic Stem Cells and Sperm
Author Information
Author(s): Gu Bin, Zhang Jiarong, Wu Ying, Zhang Xinzong, Tan Zhou, Lin Yuanji, Huang Xiao, Chen Liangbiao, Yao Kangshou, Zhang Ming
Primary Institution: The Institute of Genetics, College of Life Sciences, Zhejiang University, Hangzhou, China
Hypothesis
Whether a promiscuous pattern of cell surface proteins exists for human embryonic stem cells and germ cells.
Conclusion
The promiscuous expression of functional and tissue-specific cell surface proteins is a common pattern in embryonic stem cells and germ cells.
Supporting Evidence
- More than 1000 transmembrane or secreted cell surface proteins were identified on both human embryonic stem cells and sperm.
- Both cell types expressed a wide variety of tissue-specific surface proteins.
- Proteomic analyses indicated that hES and hSperm cells show a similar surface proteomic pattern.
Takeaway
This study found that both human embryonic stem cells and sperm have similar patterns of proteins on their surfaces, which might help us understand how these cells work.
Methodology
Cell surface proteins of human embryonic stem cells and human mature sperm were purified using biotin labeling and analyzed through proteomic methods.
Limitations
The study primarily focuses on surface proteins and may not capture the full complexity of cellular functions.
Participant Demographics
Semen specimens were obtained from five donors aged 22–32 years with normal sperm quality.
Digital Object Identifier (DOI)
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