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Updated: Sep 4, 2025
Quantitative Mass Spectrometric Profiling of Cancer-cell Proteomes Derived From Liquid and Solid Tumors
Published on: February 27, 2015
Proteomic analysis reveals key differences between squamous cell carcinomas and adenocarcinomas across multiple
Qi Song1, Ye Yang1, Dongxian Jiang1
1Department of Pathology, Zhongshan Hospital, State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Institute of Biomedical Sciences, Human Phenome Institute, Fudan University, Shanghai, China.
This study used deep proteomics to analyze squamous cell carcinoma (SCC) and adenocarcinoma (AC), revealing distinct molecular pathways and prognostic roles. Findings offer new insights into cancer subtypes and potential diagnostic markers.
Area of Science:
- Proteomics
- Oncology
- Molecular Biology
Background:
- Squamous cell carcinoma (SCC) and adenocarcinoma (AC) are major solid cancer subtypes with similar morphologies, complicating metastatic origin identification.
- Distinguishing SCC origins is crucial for effective diagnosis and treatment strategies.
Purpose of the Study:
- To perform a deep proteomic analysis of SCCs and ACs from various organs.
- To identify proteomic differences, prognostic markers, and potential therapeutic targets between SCC and AC subtypes.
- To explore the role of lipid metabolism in rare SCCs and characterize tumor microenvironments.
Main Methods:
- Deep proteomic analysis of 333 SCCs (17 organs) and 69 ACs (7 organs).
- Comparative proteomic analysis to identify pathway and molecule distinctions.
- Analysis of kinase-transcription factor networks and immune microenvironments.
- Identification of tumor-specific proteins for diagnostic potential.
Main Results:
- Proteomic comparison revealed distinct pathways and molecules with differential prognostic roles in SCCs and ACs.
- Lipid metabolism was highlighted as potentially reinforcing malignancy in rare SCCs.
- Proteomic clusters correlated with anatomical features, and immune subtyping showed diverse tumor microenvironments.
- Identified potential druggable targets and tumor-specific proteins with diagnostic value.
Conclusions:
- Deep proteomics provides a valuable resource for understanding SCC and AC heterogeneity.
- Proteomic signatures can differentiate SCC and AC, offering insights into their distinct biological behaviors.
- The study identified potential biomarkers for diagnosis and therapeutic targets for SCC and AC treatment.
