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HOX genes in human cancers

C Cillo1

  • 1International Institute of Genetics and Biophysics, Naples, Italy.

Invasion & Metastasis
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

Altered expression of human homeobox (HOX) genes is observed in various cancers, including kidney, colon, and lung. HOX gene dysregulation correlates with cancer progression and cell communication changes, suggesting their role in neoplasia.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • Transcription factors, particularly homeobox (HOX) genes, are vital for normal development.
  • HOX genes are organized in conserved clusters, suggesting functional importance in gene regulation.
  • Understanding HOX gene expression is key to deciphering the molecular underpinnings of neoplasia.

Purpose of the Study:

  • To investigate HOX gene expression patterns in normal human tissues and their corresponding neoplastic counterparts.
  • To determine the correlation between HOX gene expression and different cancer types, histological subtypes, and metastatic potential.
  • To explore the relationship between HOX gene expression, cell adhesion molecules, and N-RAS mutations in melanoma.

Main Methods:

  • Analysis of HOX gene expression in various normal human tissues and organs.

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  • Comparative analysis of HOX gene expression in cancerous tissues (kidney, colon, lung) versus normal tissues.
  • Correlation studies of HOX gene expression with histological types of small cell lung cancer (SCLC) and SCLC variant progression.
  • Investigation of HOX gene expression patterns in relation to cell adhesion profiles (VLA-2, VLA-5, VLA-6, ICAM-1) and N-RAS mutations in melanoma cell populations.

    • Main Results:

    • Characteristic HOX gene expression patterns were identified for each normal solid organ.
    • Altered HOX gene expression was observed in kidney and colon cancers.
    • HOX gene expression correlated with histological subtypes of primary SCLC and showed marked alterations between primary and metastatic SCLC variants.
    • Differential HOX gene expression patterns correlated with specific cell adhesion molecules and N-RAS mutations in melanoma.

    Conclusions:

    • HOX genes exhibit specific expression patterns in normal tissues that are dysregulated in cancer.
    • Altered HOX gene expression is a feature of various human cancers and may be linked to tumor progression and metastasis.
    • HOX genes function as a network regulating cell communication during morphogenesis, and their alterations contribute to cancer evolution.