Detection of c-mos proto-oncogene expression in human cells
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Updated: Nov 6, 2026

Colony Forming Cell (CFC) Assay for Human Hematopoietic Cells
Published on: December 18, 2010
C C Li1, E Chen, C D O'Connell
1Biological Carcinogenesis and Development Program, Inc./DynCorp, Frederick, Maryland 21702.
Abstract:
Although the human c-mos proto-oncogene has been characterized for more than a decade, very little is known about its protein product and its expression in somatic cells. We generated three human c-mos-specific antisera and report here the detection of c-mos protein in a human neuroblastoma cell line, SK-N-BE2 (BE2). Both Western (immuno-) blot and immunoprecipitation analyses detected a p37 as the major form and p40 and p35 as minor forms of the c-mos protein. Using Northern blot analysis, 3.5- and 1.7-kb c-mos messages were detected. Using a highly sensitive method that combines reverse transcription and the polymerase chain reaction (RT-PCR), c-mos RNA was detected in all the human samples examined. With Western blot analysis, we further showed that c-mos proteins are expressed in cervical carcinoma-derived cell lines. This ubiquitous expression of low levels of c-mos suggests a fundamental role for the c-mos proto-oncogene.
Insights
The c-mos proto-oncogene protein is expressed in human somatic cells, including neuroblastoma and cervical carcinoma cell lines. This ubiquitous expression suggests a fundamental role for c-mos in cellular functions.
Area of Science:
- Molecular Biology
- Oncology
- Cell Biology
Background:
- The human c-mos proto-oncogene has been studied for over a decade.
- Little is known about its protein product and expression in somatic cells.
Purpose of the Study:
- To detect and characterize c-mos protein expression in human somatic cells.
- To investigate the role of the c-mos proto-oncogene.
Main Methods:
- Generated c-mos-specific antisera.
- Utilized Western blot, immunoprecipitation, Northern blot, and RT-PCR analyses.
- Examined human neuroblastoma and cervical carcinoma cell lines.
Main Results:
- Detected c-mos protein (p37 major, p40/p35 minor forms) in SK-N-BE2 cells.
- Identified 3.5- and 1.7-kb c-mos RNA messages.
- Confirmed ubiquitous c-mos RNA detection across all examined human samples.
- Showed c-mos protein expression in cervical carcinoma cell lines.
Conclusions:
- c-mos protein is expressed in human somatic cells.
- Ubiquitous low-level expression suggests a fundamental role for the c-mos proto-oncogene.
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