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Updated: Jan 14, 2026
Molecular Profiling of the Invasive Tumor Microenvironment in a 3-Dimensional Model of Colorectal Cancer Cells and Ex vivo Fibroblasts
Published on: April 29, 2014
The tumor microenvironment reprograms FAM227A expression: Implications for CRC metastasis and diagnostic biomarker
Hongping Wang1, Bin Yang2, Rui Wang3
1Laboratory of Gastroenterology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China; Department of Geriatrics, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang Province, China.
Researchers developed specific antibodies to study FAM227A, a protein influencing colorectal cancer (CRC) growth and potentially acting as a pan-cancer biomarker. Elevated serum FAM227A levels suggest its diagnostic utility.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Colorectal cancer (CRC) presents a significant global health challenge.
- FAM227A was identified as a novel molecule through functional screening.
Purpose of the Study:
- To develop specific antibodies against human FAM227A.
- To investigate the expression, localization, and function of FAM227A in colorectal cancer.
- To evaluate FAM227A as a potential diagnostic biomarker for pan-cancer detection.
Main Methods:
- Generation of specific monoclonal antibodies against human FAM227A.
- Analysis of FAM227A expression in CRC cells and tissues using Western blot and RT-qPCR.
- Subcellular localization studies (confocal imaging, fractionation, isolation).
- Tumorigenesis assays to assess FAM227A's role in tumor promotion.
- ELISA and ROC curve analysis for serum FAM227A detection in pan-cancer patients.
Main Results:
- High-affinity monoclonal antibodies against FAM227A were successfully developed.
- FAM227A exhibits dynamic subcellular localization, including nuclear translocation and mitochondrial enrichment under stress.
- FAM227A undergoes C-terminal degradation, producing a ~30 kDa fragment (ΔFAM227A).
- FAM227A modulates mitophagy and p53 phosphorylation, with p53 status-dependent effects on CRC tumor suppression.
- Elevated serum FAM227A levels were observed across multiple cancer types.
Conclusions:
- FAM227A is a dynamically regulated protein influenced by the tumor microenvironment (TME).
- FAM227A is involved in modulating the p53 pathway.
- FAM227A shows promise as a circulating biomarker for cancer detection.
