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Novel breast cancer metastasis-associated proteins
Jiapei Ho1, Jacklyn-Wai-Fun Kong, Lee-Yee Choong
1Oncology Research Institute, Yong Loo Lin School of Medicine, Singapore.
Journal of Proteome Research
|December 18, 2008
Summary
This study identified 197 differentially expressed proteins, including potential drug targets, in breast cancer metastasis. These findings reveal key molecular changes and novel protein players driving cancer progression.
Area of Science:
- Proteomics
- Cancer Biology
- Molecular Oncology
Background:
- Breast cancer metastasis is a complex process involving significant molecular alterations.
- Understanding protein expression changes is crucial for identifying therapeutic targets and biomarkers.
Purpose of the Study:
- To catalog proteome-wide protein expression changes associated with increasing metastatic potential in breast cancer.
- To identify novel metastasis-associated proteins and validate their clinical relevance.
Main Methods:
- Utilized iTRAQ-based ESI-LC/MS/MS proteomics on a four-isogenic cell line model of breast cancer metastasis.
- Analyzed over 1000 detected proteins to identify differentially expressed candidates.
- Validated protein expression using antibody-based methods and tissue microarrays.
Main Results:
- Identified 197 differentially expressed proteins, including kinases, phosphatases, proteases, and transcription factors.
- Observed protein expression changes distributed across mild, moderate, and aggressive metastatic phenotypes.
- Discovered ten novel metastasis-associated proteins and validated SH3GLB1, SUB1, SND1, and TRIM28 expression changes in clinical samples.
Conclusions:
- The study unraveled proteome-wide molecular aberrations driving breast cancer metastasis.
- Identified potential new therapeutic targets and biomarkers for metastatic breast cancer.
- Highlighted significant reprogramming in cell metabolism and information processing during metastasis.
