A meta‑analysis of transcriptome datasets characterizes malignant transformation from melanocytes and nevi to melanoma

  • Authors:
    • Daniel Ortega‑Bernal
    • Claudia H. González‑De La Rosa
    • Elena Arechaga‑Ocampo
    • Miguel Angel Alvarez‑Avitia
    • Nora Sobrevilla Moreno
    • Claudia Rangel‑Escareño
  • View Affiliations

  • Published online on: May 31, 2018     https://doi.org/10.3892/ol.2018.8861
  • Pages: 1899-1911
Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Melanoma represents one of the most aggressive malignancies and has a high tendency to metastasize. The present study aims to investigate the molecular mechanisms of two pathways to cancer transformation with the purpose of identifying potential biomarkers. Our approach is based on a meta‑analysis of gene expression profiling contrasting two scenarios: A model that describes a transformation pathway from melanocyte to melanoma and a second model where transformation occurs through an intermediary nevus. Data consists of three independent, publicly available microarray datasets from the Gene Expression Omnibus (GEO) database comprising samples from melanocytes, nevi and melanoma. The present analysis identified 808 differentially expressed genes (528 upregulated and 360 downregulated) in melanoma compared with nevi, and 2,331 differentially expressed genes (946 upregulated and 1,385 downregulated) in melanoma compared with melanocytes. Further analysis narrowed down this list, since 682 differentially expressed genes were found in both models (417 upregulated and 265 downregulated). Enrichment analysis identified relevant dysregulated pathways. This article also presented a discussion on significant genes including ADAM like decysin 1, neudesin neurotrophic factor, MMP19, apolipoprotein L6, C‑X‑C motif chemokine ligand (CXCL)8, basic, immunoglobulin‑like variable motif containing and CXCL16. These are of particular interest because they encode secreted proteins hence represent potential blood biomarkers for the early detection of malignant transformation in both scenarios. Cytotoxic T‑lymphocyte associated protein 4, an important therapeutic target in melanoma treatment, was also upregulated in both comparisons indicating a potential involvement in immune tolerance, not only at advanced stages but also during the early transformation to melanoma. The results of the present study may provide a research direction for studying the mechanisms underlying the development of melanoma, depending on its origin.
View Figures
View References

Related Articles

Journal Cover

August-2018
Volume 16 Issue 2

Print ISSN: 1792-1074
Online ISSN:1792-1082

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Ortega‑Bernal D, González‑De La Rosa CH, Arechaga‑Ocampo E, Alvarez‑Avitia MA, Moreno NS and Rangel‑Escareño C: A meta‑analysis of transcriptome datasets characterizes malignant transformation from melanocytes and nevi to melanoma. Oncol Lett 16: 1899-1911, 2018
APA
Ortega‑Bernal, D., González‑De La Rosa, C.H., Arechaga‑Ocampo, E., Alvarez‑Avitia, M.A., Moreno, N.S., & Rangel‑Escareño, C. (2018). A meta‑analysis of transcriptome datasets characterizes malignant transformation from melanocytes and nevi to melanoma. Oncology Letters, 16, 1899-1911. https://doi.org/10.3892/ol.2018.8861
MLA
Ortega‑Bernal, D., González‑De La Rosa, C. H., Arechaga‑Ocampo, E., Alvarez‑Avitia, M. A., Moreno, N. S., Rangel‑Escareño, C."A meta‑analysis of transcriptome datasets characterizes malignant transformation from melanocytes and nevi to melanoma". Oncology Letters 16.2 (2018): 1899-1911.
Chicago
Ortega‑Bernal, D., González‑De La Rosa, C. H., Arechaga‑Ocampo, E., Alvarez‑Avitia, M. A., Moreno, N. S., Rangel‑Escareño, C."A meta‑analysis of transcriptome datasets characterizes malignant transformation from melanocytes and nevi to melanoma". Oncology Letters 16, no. 2 (2018): 1899-1911. https://doi.org/10.3892/ol.2018.8861