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Non-coding RNAs in EMT regulation: Association with tumor progression and therapy response
Mehrdokht Sadrkhanloo1, Maliheh Entezari2, Mohsen Rashidi3
1Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
Abstract:
RNA molecules lacking capacity in protein translation, are known as non-coding RNAs (ncRNAs). Growth, differentiation and migration are influenced by ncRNAs in cells. The abnormal expression of ncRNAs contributes to development of diseases, especially cancer. On the other hand, EMT is a vital mechanism for cancer invasion and diffusion in body. In this manuscript, role of ncRNAs in EMT regulation and subsequent effect on cancer progression is investigated. The miRNAs regulate EMT by affecting signaling pathways including PI3K/Akt and PTEN to modulate cancer metastasis. Furthermore, miRNA and EMT interaction has close association with drug sensitivity of tumor cells. LncRNAs can affect EMT via targeting ZEB1/2, Twist and Snail among others and similarly, based on the impact on EMT, sensitivity of cancer cells to therapy increases or decreases. CircRNAs regulate both drug sensitivity and metastasis of cancers by affecting EMT mechanism. Noteworthy, circRNAs and lncRNAs are capable of sponging miRNAs in modulating EMT mechanism. Exosomes belong to extracellular vesicles with low size that can be secreted by cells in transferring genetic materials. The transfer of ncRNAs by exosomes is performed and they can also regulate EMT in cancer progression. Finally, ncRNAs regulating EMT mechanism are used for cancer diagnosis and prognosis.
Insights
Non-coding RNAs (ncRNAs) significantly impact cancer progression by regulating epithelial-mesenchymal transition (EMT). These ncRNAs influence metastasis, drug sensitivity, and offer potential for cancer diagnosis and prognosis.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Non-coding RNAs (ncRNAs) are crucial regulators of cellular processes like growth and differentiation.
- Aberrant ncRNA expression is linked to various diseases, particularly cancer.
- Epithelial-mesenchymal transition (EMT) is a key mechanism in cancer invasion and metastasis.
Purpose of the Study:
- To investigate the role of ncRNAs in regulating EMT.
- To understand the impact of ncRNA-EMT interactions on cancer progression, metastasis, and drug sensitivity.
- To explore the potential of ncRNAs in cancer diagnosis and prognosis.
Main Methods:
- Review and analysis of existing literature on ncRNAs and EMT in cancer.
- Examination of how different types of ncRNAs (miRNAs, lncRNAs, circRNAs) modulate EMT pathways.
- Investigation of exosome-mediated transfer of ncRNAs and their effect on cancer.
Main Results:
- MicroRNAs (miRNAs) regulate EMT via pathways like PI3K/Akt and PTEN, affecting metastasis and drug sensitivity.
- Long non-coding RNAs (lncRNAs) and circular RNAs (circRNAs) target key EMT regulators (ZEB1/2, Twist, Snail) and influence therapy response.
- ncRNAs, including those transferred via exosomes, play a significant role in modulating EMT, impacting cancer metastasis and drug sensitivity.
Conclusions:
- ncRNAs are critical regulators of EMT in cancer, influencing key processes like metastasis and drug resistance.
- The interplay between different ncRNAs (miRNAs, lncRNAs, circRNAs) and EMT pathways offers therapeutic targets.
- ncRNAs hold promise as diagnostic and prognostic biomarkers for cancer, particularly in relation to EMT.
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