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Published on: March 30, 2019
LncRNA-miRNA axis in tumor progression and therapy response: An emphasis on molecular interactions and therapeutic
Maliheh Entezari1, Afshin Taheriazam2, Sima Orouei3
1Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Islamic Republic of Iran; Department of Genetics, Faculty of Advanced Science and Technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Islamic Republic of Iran.
Abstract:
Epigenetic factors are critical regulators of biological and pathological mechanisms and they could interact with different molecular pathways. Targeting epigenetic factors has been an idea approach in disease therapy, especially cancer. Accumulating evidence has highlighted function of long non-coding RNAs (lncRNAs) as epigenetic factors in cancer initiation and development and has focused on their association with downstream targets. microRNAs (miRNAs) are the most well-known targets of lncRNAs and present review focuses on lncRNA-miRNA axis in malignancy and therapy resistance of tumors. LncRNA-miRNA regulates cell death mechanisms such as apoptosis and autophagy in cancers. This axis affects tumor metastasis via regulating EMT and MMPs. Besides, lncRNA-miRNA axis determines sensitivity of tumor cells to chemotherapy, radiotherapy and immunotherapy. Based on the studies, lncRNAs can be affected by drugs and genetic tools in cancer therapy and this may affect expression level of miRNAs as their downstream targets, leading to cancer suppression/progression. LncRNAs have both tumor-promoting and tumor-suppressor functions in cancer and this unique function of lncRNAs has complicated their implication in tumor therapy. LncRNA-miRNA axis can also affect other signaling networks in cancer such as PI3K/Akt, STAT3, Wnt/β-catenin and EZH2 among others. Notably, lncRNA/miRNA axis can be considered as a signature for diagnosis and prognosis in cancers.
Insights
Long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) form an axis regulating cancer. This lncRNA-miRNA axis impacts tumor growth, metastasis, and therapy resistance, offering diagnostic and prognostic potential.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Epigenetic factors are crucial in biological processes and disease, particularly cancer.
- Long non-coding RNAs (lncRNAs) function as epigenetic regulators in cancer initiation and progression.
- MicroRNAs (miRNAs) are key downstream targets of lncRNAs, forming critical regulatory axes.
Purpose of the Study:
- To review the role of the lncRNA-miRNA axis in cancer malignancy.
- To explore the implications of the lncRNA-miRNA axis in tumor therapy resistance.
- To highlight the diagnostic and prognostic potential of the lncRNA-miRNA axis in cancer.
Main Methods:
- Literature review of studies on lncRNA-miRNA interactions in cancer.
- Analysis of lncRNA-miRNA roles in cancer cell death (apoptosis, autophagy).
- Investigation of lncRNA-miRNA influence on tumor metastasis (EMT, MMPs) and therapy sensitivity.
Main Results:
- The lncRNA-miRNA axis regulates apoptosis, autophagy, epithelial-mesenchymal transition (EMT), and matrix metalloproteinases (MMPs).
- This axis influences sensitivity to chemotherapy, radiotherapy, and immunotherapy.
- lncRNAs can be modulated by therapeutic interventions, affecting downstream miRNAs and cancer progression.
- The lncRNA-miRNA axis interacts with signaling pathways like PI3K/Akt, STAT3, and Wnt/β-catenin.
Conclusions:
- The lncRNA-miRNA axis is a significant regulator of cancer development, metastasis, and therapy resistance.
- Dysregulation of the lncRNA-miRNA axis contributes to various hallmarks of cancer.
- The lncRNA-miRNA axis holds promise as a biomarker for cancer diagnosis and prognosis.
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