QKI-Regulated Alternative Splicing Events in Cervical Cancer: Pivotal Mechanism and Potential Therapeutic Strategy

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Engineering Artificial Factors to Specifically Manipulate Alternative Splicing in Human Cells
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Engineering Artificial Factors to Specifically Manipulate Alternative Splicing in Human Cells

Published on: April 26, 2017

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Yalan Luo1,2,3, Yuyuan Li4, Peng Ge1,2,3

  • 1Laboratory of Integrative Medicine, The First Affiliated Hospital, Dalian Medical University, Dalian, China.

DNA and Cell Biology
|September 22, 2021
PubMed

Insights

The RNA-binding protein QKI, crucial for RNA processing, is reduced in cervical cancer (CC). Restoring QKI levels in HeLa cells inhibited cancer cell growth and boosted apoptosis, suggesting QKI

Area of Science:

  • Molecular Biology
  • Cancer Research
  • RNA Biology

Background:

  • QKI is an essential regulator of RNA splicing and maturation.
  • The specific role of QKI in cervical cancer (CC) pathogenesis remains largely uncharacterized.
  • Understanding QKI's function is critical for exploring novel therapeutic strategies in CC.

Purpose of the Study:

  • To investigate the expression levels of QKI in human cervical cancer.
  • To determine the functional impact of QKI overexpression on cervical cancer cell behavior.
  • To identify QKI-regulated genes and alternative splicing events in CC.

Main Methods:

  • RNA sequencing (RNA-seq) was employed to identify QKI-regulated alternative splicing events (ASEs) and differentially expressed genes (DEGs).
  • Quantitative reverse-transcription polymerase chain reaction (qRT-PCR) was used for selective validation of gene expression.
  • Bioinformatic analyses, including Gene Ontology and KEGG pathway enrichment, were performed.

Main Results:

  • QKI expression was found to be decreased in human cervical cancer tissues.
  • Overexpression of QKI significantly inhibited HeLa cell proliferation and promoted apoptosis.
  • Hundreds of ASEs and DEGs were identified as being regulated by QKI, many associated with cancer and apoptosis pathways.

Conclusions:

  • QKI plays a suppressive role in cervical cancer progression.
  • QKI influences CC development by modulating gene expression through alternative splicing.
  • QKI represents a potential therapeutic target for cervical cancer treatment.
Keywords:
QKIRNA-seqalternative splicingcervical cancergene expressiontumor suppressortumorigenesis

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