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Antisense regulation of oncogenes in human cancer
1Department of Thoracic and Cardiovascular Surgery, University of Texas M. D. Anderson Cancer Center, Houston 77030, USA.
Abstract:
Gene transfer or manipulation of genes for the treatment of cancer is a rapidly expanding field. In recent years, much attention has been focused on manipulating cancer genes and applying antisense technology in therapeutic ways. Consequently, antisense RNA control is now recognized as a specific means of regulating gene expression at the posttranscriptional level. Defects in vital genes occur in many human diseases, including cancer, defects that may be due to an accumulation of mutations in the genes that leads to the production of faulty proteins. Although the biological significance of such mutant proteins still remains in question, recent experiments have demonstrated that genes overproducing faulty proteins are often associated with increased tumor cell growth. Moreover, using a stretch of antisense RNA to block the production of such defective proteins can effectively silence their genes; as a result, tumor cells stop dividing rapidly and revert to a more normal phenotype. Therefore, antisense RNA technology could have a significant impact on cancer gene therapy. Here, we have tried to give comprehensive coverage to some major cases of antisense RNA control of cancer-related genes highlighting the biological systems involved, the efficacy of the antisense RNA in altering target gene function, and how such antisense control affects the malignant phenotype. Furthermore, the therapeutic potential of the antisense technique depends on the in-depth understanding of the target gene function and its role in carcinogenesis.
Insights
Antisense RNA technology offers a novel approach to cancer gene therapy by silencing genes that produce faulty proteins, thereby inhibiting tumor cell growth. This method regulates gene expression post-transcriptionally, potentially restoring normal cell phenotype.
Area of Science:
- Oncology
- Molecular Biology
- Gene Therapy
Background:
- Cancer gene therapy is rapidly advancing, with a focus on gene manipulation.
- Antisense RNA technology offers precise post-transcriptional gene expression regulation.
- Mutant genes causing faulty protein production are linked to increased tumor cell growth.
Purpose of the Study:
- To provide comprehensive coverage of antisense RNA control for cancer-related genes.
- To highlight biological systems, efficacy, and phenotypic effects of antisense RNA in cancer.
- To explore the therapeutic potential of antisense RNA technology in cancer gene therapy.
Main Methods:
- Reviewing major cases of antisense RNA control of cancer-related genes.
- Analyzing the biological systems and target gene functions involved.
- Evaluating the efficacy of antisense RNA in altering gene function and malignant phenotype.
Main Results:
- Antisense RNA can effectively silence genes overproducing faulty proteins.
- Silencing these genes leads to reduced tumor cell proliferation.
- Cancer cells treated with antisense RNA can revert to a more normal phenotype.
Conclusions:
- Antisense RNA technology holds significant promise for cancer gene therapy.
- Effective application requires a deep understanding of target gene function and its role in carcinogenesis.
- This approach offers a specific means of regulating gene expression for therapeutic benefit.