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STIL Overexpression Is Associated with Chromosomal Numerical Abnormalities in Non-Small-Cell Lung Carcinoma Through

Shunsuke Ohtsuka1, Hisami Kato1, Rei Ishikawa1

  • 1Department of Tumor Pathology, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan.

Current Oncology (Toronto, Ont.)
|December 27, 2024
PubMed

Insights

STIL protein overexpression in non-small-cell lung carcinoma (NSCLC) correlates with chromosomal abnormalities. This suggests STIL may drive chromosomal instability and offers a potential therapeutic target for NSCLC.

Area of Science:

  • Cell Biology
  • Cancer Research
  • Genetics

Background:

  • STIL (Sil) is crucial for centriole biogenesis and its dysregulation is linked to diseases.
  • The specific role of STIL in non-small-cell lung carcinoma (NSCLC) is not well understood.

Purpose of the Study:

  • To investigate STIL expression in NSCLC.
  • To determine the association between STIL and chromosomal numerical abnormalities (CNAs) in NSCLC.
  • To explore the functional impact of STIL overexpression in NSCLC.

Main Methods:

  • Analysis of The Cancer Genome Atlas (TCGA) dataset for STIL mRNA expression.
  • Immunohistochemical analysis of STIL protein in NSCLC patient samples.
  • In vitro experiments using NSCLC cell lines with induced STIL overexpression.

Main Results:

  • Upregulated STIL mRNA and protein expression were observed in NSCLC subtypes (LUAD, LUSC).
  • STIL overexpression in NSCLC cells led to centrosome amplification and chromosomal instability.
  • Elevated STIL mRNA levels were associated with chromosomal copy number alterations in NSCLC.

Conclusions:

  • STIL overexpression is linked to CNAs in NSCLC, potentially via centrosome amplification.
  • STIL-induced chromosomal instability may contribute to NSCLC development.
  • STIL represents a potential therapeutic target for NSCLC treatment.
Keywords:
STILcentrosome amplificationchromosomal instabilitychromosomal numerical abnormalitylung adenocarcinomalung squamous cell carcinomanon-small-cell lung carcinomaoverexpression

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