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miRNA-Directed Regulation of the Main Signaling Pathways in Thyroid Cancer
Julia Ramírez-Moya1,2, Pilar Santisteban1,2
1Instituto de Investigaciones Biomédicas "Alberto Sols", Consejo Superior Investigaciones Científicas and Universidad Autónoma de Madrid (CSIC-UAM), Madrid, Spain.
Abstract:
In the last two decades, great strides have been made in the study of microRNAs in development and in diseases such as cancer, as reflected in the exponential increase in the number of reviews on this topic including those on undifferentiated and well-differentiated thyroid cancer. Nevertheless, few reviews have focused on understanding the functional significance of the most up- or down-regulated miRNAs in thyroid cancer for the main signaling pathways hyperactivated in this tumor type. The aim of this review is to discuss the major miRNAs targeting proteins of the MAPK, PI3K, and TGFβ pathways, to define their mechanisms of action through the 3'UTR regions of their target genes, and to describe how they affect thyroid tumorigenesis through their actions on cell proliferation, migration, and invasion. Given the importance of miRNAs in cancer as diagnostic, prognostic and therapeutic candidates, a better understanding of this cross-talk might shed new light on the biomedical treatment of thyroid cancer.
Insights
This review explores how microRNAs (miRNAs) impact thyroid cancer by targeting key signaling pathways like MAPK and PI3K. Understanding this cross-talk is crucial for developing new diagnostic and therapeutic strategies.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- MicroRNA research has surged in the last two decades, with significant focus on cancer.
- Existing reviews often overlook the functional roles of specific microRNAs in thyroid cancer signaling pathways.
Purpose of the Study:
- To review major microRNAs targeting MAPK, PI3K, and TGFβ pathways in thyroid cancer.
- To elucidate microRNA mechanisms of action via 3' untranslated regions (3'UTRs).
- To describe microRNA influence on thyroid tumorigenesis, including cell proliferation, migration, and invasion.
Main Methods:
- Literature review focusing on microRNAs and thyroid cancer.
- Analysis of microRNA targeting of key signaling pathway proteins.
- Examination of microRNA interactions with 3'UTR regions of target genes.
Main Results:
- Identified key microRNAs dysregulated in thyroid cancer.
- Detailed mechanisms by which these microRNAs regulate target genes within MAPK, PI3K, and TGFβ pathways.
- Linked microRNA activity to altered cell proliferation, migration, and invasion in thyroid tumors.
Conclusions:
- MicroRNAs play a critical role in thyroid cancer development and progression.
- Understanding microRNA-pathway interactions offers potential for novel diagnostic and therapeutic approaches.
- Further research into microRNA cross-talk may illuminate new biomedical treatments for thyroid cancer.
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