ACTB, CDKN1B, GAPDH, GRB2, RHOA and SDCBP Were Identified as Reference Genes in Neuroendocrine Lung Cancer via the nCounter TechnologyReportar como inadecuado




ACTB, CDKN1B, GAPDH, GRB2, RHOA and SDCBP Were Identified as Reference Genes in Neuroendocrine Lung Cancer via the nCounter Technology - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Background

Neuroendocrine lung cancer NELC represents 25% of all lung cancer cases and large patient collectives exist as formalin-fixed, paraffin-embedded FFPE tissue only. FFPE is controversially discussed as source for molecular biological analyses and reference genes for NELC are poorly establishes.

Material and methods

Forty-three representative FFPE-specimens were used for mRNA expression analysis using the digital nCounter technology NanoString. Based on recent literature, a total of 91 mRNA targets were investigated as potential tumor markers or reference genes. The geNorm, NormFinder algorithms and coefficient of correlation were used to identify the most stable reference genes. Statistical analysis was performed by using the R programming environment version 3.1.1

Results

RNA integrity RIN ranged from 1.8 to 2.6 and concentrations from 34 to 2,109 ng-μl. However, the nCounter technology gave evaluable results for all samples tested. ACTB, CDKN1B, GAPDH, GRB2, RHOA and SDCBP were identified as constantly expressed genes with high stability M-values according to geNorm, NormFinder and coefficients of correlation.

Conclusion

FFPE-derived mRNA is suitable for molecular biological investigations via the nCounter technology, although it is highly degraded. ACTB, CDKN1B, GAPDH, GRB2, RHOA and SDCBP are potent reference genes in neuroendocrine tumors of the lung.



Autor: Robert Fred Henry Walter , Robert Werner, Claudia Vollbrecht, Thomas Hager, Elena Flom, Daniel Christian Christoph, Jan Schmeller

Fuente: http://plos.srce.hr/



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