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Identifying Cell Surface Markers of Primary Neural Stem and Progenitor Cells by Metabolic Labeling of Sialoglycan
Published on: September 7, 2019
Labeling and identification of LNCaP cell surface proteins: a pilot study
Hayley C Whitaker1, David P B Stanbury, Claire Brinham
1Uro-Oncology Research Group, CRUK Cambridge Research Institute, Li Ka Shing Centre, Robinson Way, Cambridge, UK. hayley.whitaker@cancer.org.uk
The Prostate
|April 19, 2007
Summary
This study identifies androgen-regulated membrane proteins in prostate cancer cells using cell surface biotinylation. These findings highlight new potential targets for prostate cancer therapy.
Area of Science:
- Proteomics
- Cell Biology
- Cancer Research
Background:
- Membrane proteins are crucial for cell function and communication.
- Prostate cancer research has largely overlooked cell surface proteins and their androgen regulation.
Purpose of the Study:
- To identify androgen-regulated membrane proteins in LNCaP prostate cancer cells.
- To validate the identified proteins in prostate tissue samples.
Main Methods:
- Cell surface proteins of LNCaP cells were biotinylated and purified.
- Proteins were separated by 2D gel electrophoresis and identified by mass spectrometry.
- Androgen regulation and membrane localization were confirmed via Western blotting and microscopy.
Main Results:
- Cell surface biotinylation effectively isolated LNCaP plasma membrane proteins.
- E-cadherin and LDLR showed androgen-dependent regulation.
- Mass spectrometry identified novel androgen-regulated membrane proteins, including Prx-3 and GRP78.
Conclusions:
- Cell surface biotinylation is a robust method for identifying membrane proteins in prostate cancer cells.
- The study successfully identified and validated androgen-regulated membrane proteins, offering potential therapeutic targets.
