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Inhibition of lung cancer proliferation by antisense cyclin D
D S Schrump1, A Chen, U Consoli
1Department of Thoracic and Cardiovascular Surgery, University of Texas M.D. Anderson Cancer Center, Houston 77030, USA.
Abstract:
The growth and tumorigenicity of murine lung cancer cells transfected with an antisense cyclin D1 construct were evaluated in studies pertaining to mouse lung carcinogenesis. This antisense construct inhibited the expression of cyclin D in these cells, significantly reducing both their in vitro proliferation and tumorigenicity in nude mice relative to control cells. These data may have implications regarding the treatment of human neoplasms of aerodigestive tract origin that either overexpress the cyclin D oncogene or exhibit mutations that influence cell cycle progression via cyclin D-dependent mechanisms.
Insights
Antisense cyclin D1 construct inhibited lung cancer cell growth and tumor formation in mice. This finding suggests potential new treatments for aerodigestive tract cancers overexpressing cyclin D1.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Cyclin D1 is an oncogene implicated in cell cycle progression.
- Dysregulation of cyclin D1 is observed in various human cancers.
- Understanding cyclin D1's role is crucial for developing targeted cancer therapies.
Purpose of the Study:
- To investigate the effect of an antisense cyclin D1 construct on lung cancer cell growth and tumorigenicity.
- To evaluate the therapeutic potential of inhibiting cyclin D1 expression in mouse lung cancer models.
Main Methods:
- Transfection of murine lung cancer cells with an antisense cyclin D1 construct.
- Assessment of in vitro cell proliferation rates.
- Evaluation of tumor formation and growth in nude mice.
Main Results:
- The antisense construct effectively inhibited cyclin D1 expression in cancer cells.
- Significant reduction in in vitro proliferation of transfected cells compared to controls.
- Marked decrease in tumorigenicity and tumor growth in nude mice bearing transfected cells.
Conclusions:
- Inhibition of cyclin D1 expression suppresses lung cancer cell proliferation and tumorigenicity.
- Antisense targeting of cyclin D1 shows promise for treating aerodigestive tract cancers.
- These findings support the development of cyclin D1-targeted therapies for neoplasms involving cell cycle dysregulation.