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Overexpression of mRNA-decapping enzyme 1a predicts disease-specific survival in malignant melanoma

Yong Tang1, Chao Xie2, Yu Zhang1

  • 1Department of Hepatobiliary Surgery.

Melanoma Research
|October 28, 2017
PubMed

Insights

Elevated expression of mRNA-decapping enzyme 1a (DCP1A) is linked to increased malignant melanoma (MM) risk. Higher DCP1A levels in MM tissues correlate with shorter disease-specific survival and serve as an independent prognostic factor.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Previous research linked the rs11551405 A allele in the 3' UTR of mRNA-decapping enzyme 1a (DCP1A) to increased malignant melanoma (MM) risk.
  • The role of DCP1A expression levels in MM pathogenesis and prognosis requires further investigation.

Purpose of the Study:

  • To determine if the previously identified genetic association with DCP1A influences its expression in MM.
  • To evaluate whether altered DCP1A expression can predict disease-specific survival (DSS) in MM patients.

Main Methods:

  • Quantitative RT-PCR (qRT-PCR), immunohistochemistry, and western blotting were used to measure DCP1A expression in primary MM tissues and benign nevi (BN).
  • DCP1A expression levels were correlated with clinical characteristics and 3-year DSS in 56 MM cases and 43 BN cases.

Main Results:

  • Significantly higher mRNA levels (P=0.002), immunohistochemistry scores (P<0.001), and protein levels (P<0.05) of DCP1A were observed in MM tissues compared to BN tissues.
  • Elevated DCP1A expression was significantly correlated with shorter DSS in MM patients (P<0.05).
  • Multivariate Cox regression identified DCP1A expression as an independent prognostic factor for DSS (HR=1.648, P=0.021).

Conclusions:

  • Increased DCP1A expression in MM tissues suggests a role in oncogenesis.
  • High DCP1A levels may serve as a predictive biomarker for unfavorable prognosis in malignant melanoma patients.

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