A Systematic Comparison of Purification and Normalization Protocols for Quantitative MicroRNA Expressional Profiling in Insulin-Producing Cells.
Int J Mol Sci
; 17(6)2016 Jun 07.
Article
in En
| MEDLINE
| ID: mdl-27338345
ABSTRACT
As microRNAs (miRs) are gaining increasing attention as key regulators of cellular processes, expressional quantification is widely applied. However, in the processing of relatively quantified data, the importance of testing the stability of several reference mRNAs and/or miRs and choosing among these for normalization is often overlooked, potentially leading to biased results. Here, we have optimized the purification of miR-enriched total RNA from pancreatic insulin-producing INS-1 cells. Additionally, we optimized and analyzed miR expression by a qPCR-based microarray and by specific qPCR and tested the stability of candidate reference mRNAs and miRs. Hence, this study gives a widely applicable example on how to easily and systematically test and decide how to normalize miR quantification. We suggest that caution in the interpretation of miR quantification studies that do not comprise stability analysis should be exerted.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Gene Expression Regulation
/
Gene Expression Profiling
/
MicroRNAs
/
Insulin-Secreting Cells
/
Transcriptome
Limits:
Animals
Language:
En
Journal:
Int J Mol Sci
Year:
2016
Type:
Article
Affiliation country:
Denmark