Dickkopf homolog 3 (DKK3): A candidate for detection and treatment of cancers?
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Leila Hamzehzadeh1, Michele Caraglia2, Stephen L Atkin3
1Department of Medical Genetics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Abstract:
Wnt signaling is an evolutionary highly conserved pathway that is modulated by several inhibitors and activators, and plays a key role in numerous physiological processes. One of the extracellular Wnt inhibitors is the DKK (Dickkopf Homolog) family which has four members (Dkk1-4) and a unique Dkk3-related gene, Dkkl1 (soggy). DKK3 is a divergent member of the DKK protein family. Evidence suggests that DKK3 may serve as a potential therapeutic target in several types of human cancers. We review here the biological role of DKK3 as a tumor suppressor gene (TSG) or oncogene, and its correlation with various miRNAs. In addition, we discuss the role of polymorphisms and promoter methylation of the DKK3 gene, and of its expression in regulating cancer cell proliferation. Finally, we propose that DKK3 may be considered as both a biomarker and a therapeutic target in different cancers.
Insights
Dickkopf Homolog 3 (DKK3) plays a dual role in cancer, acting as a tumor suppressor or oncogene. DKK3 alterations and expression are linked to cancer cell proliferation, suggesting its potential as a biomarker and therapeutic target.
Area of Science:
- Molecular Biology
- Oncology
- Gene Regulation
Background:
- Wnt signaling is a highly conserved pathway crucial for physiological processes.
- Dickkopf Homolog (DKK) family members, including DKK3, are extracellular Wnt inhibitors.
- DKK3 shows potential as a therapeutic target in human cancers.
Purpose of the Study:
- To review the biological role of Dickkopf Homolog 3 (DKK3) in cancer.
- To explore DKK3's function as a tumor suppressor gene (TSG) or oncogene.
- To examine the correlation between DKK3 and microRNAs (miRNAs) in cancer.
Main Methods:
- Literature review of DKK3's biological functions in cancer.
- Analysis of DKK3's association with various miRNAs.
- Investigation of DKK3 gene polymorphisms and promoter methylation's impact on expression and cancer cell proliferation.
Main Results:
- DKK3 exhibits context-dependent roles, functioning as either a tumor suppressor gene or an oncogene.
- DKK3 expression is linked to cancer cell proliferation.
- Gene polymorphisms and promoter methylation of DKK3 influence its expression and role in cancer.
Conclusions:
- DKK3's multifaceted role in cancer warrants further investigation.
- DKK3's expression patterns and regulatory mechanisms are critical in cancer development.
- DKK3 holds promise as a potential biomarker and therapeutic target for various cancers.
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