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  1. Home
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  7. Oncology And Carcinogenesis
  9. Predictive And Prognostic Markers
  11. The Epithelial-to-mesenchymal Transition Activator Zeb1 Initiates A Prometastatic Competing Endogenous Rna Network

The epithelial-to-mesenchymal transition activator ZEB1 initiates a prometastatic competing endogenous RNA network

Xiaochao Tan1, Priyam Banerjee1, Xin Liu1

  • 1Department of Thoracic/Head and Neck Medical Oncology and.

The Journal of Clinical Investigation
|January 12, 2018

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View abstract on PubMed

Summary
This summary is machine-generated.

The ZEB1 transcription factor drives lung cancer metastasis by activating a competing RNA network. This network involves miR-181b, ITGA1, and ADCY9, ultimately promoting tumor cell migration and spread.

Area of Science:

  • Molecular Biology
  • Oncology
  • Gene Regulation

Background:

  • Epithelial-to-mesenchymal transition (EMT) confers metastatic properties to tumor cells.
  • Competing endogenous RNAs (ceRNAs) modulate gene expression through microRNA (miR) sponging.
  • The role of ceRNAs in ZEB1-driven metastasis remains largely unexplored.

Purpose of the Study:

  • To investigate whether ceRNAs regulate metastasis driven by the EMT-activating transcription factor ZEB1.
  • To elucidate the specific ceRNA network involved in ZEB1-mediated lung cancer metastasis.

Main Methods:

  • Analysis of miR-181b levels and targets in human lung adenocarcinomas and murine models.
  • Investigation of the regulatory relationship between ZEB1, ITGA1 mRNA, and ADCY9 mRNA via miR-181b sponging.
Keywords:
Lung cancerNoncoding RNAsOncology

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  • Functional assays assessing the impact of ITGA1 and AC9 on tumor cell migration and metastasis.

    • Main Results:

    • High miR-181b levels correlated with improved prognosis in lung adenocarcinoma.
    • ZEB1 upregulates ITGA1 and ADCY9 by antagonizing miR-181b, promoting metastasis.
    • ITGA1 and ADCY9 expression positively correlated in human tumors; AC9 activation indicated poor prognosis.

    Conclusions:

    • ZEB1 initiates a miR-181b-regulated ceRNA network involving ITGA1 and ADCY9 to drive lung cancer metastasis.
    • This network represents a potential therapeutic target for inhibiting cancer spread.
    • Understanding ZEB1-driven ceRNA networks is crucial for developing anti-metastatic strategies.