US EPA

1235756 

Journal Article 

Quantitative RT-PCR gene expression analysis of laser microdissected tissue samples 

Erickson, HS; Albert, PS; Gillespie, JW; Rodriguez-Canales, J; Marston Linehan, W; Pinto, PA; Chuaqui, RF; Emmert-Buck, MR 

2009 

1 

Nature Protocols
ISSN: 1754-2189
EISSN: 1750-2799 

4 

6 

902-922 

English 

19478806 

10.1038/nprot.2009.61 

Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) is a valuable tool for measuring gene expression in biological samples. However, unique challenges are encountered when studies are performed on cells microdissected from tissues derived from animal models or the clinic, including specimen-related issues, variability of RNA template quality and quantity, and normalization. qRT-PCR using small amounts of mRNA derived from dissected cell populations requires adaptation of standard methods to allow meaningful comparisons across sample sets. The protocol described here presents the rationale, technical steps, normalization strategy and data analysis necessary to generate reliable gene expression measurements of transcripts from dissected samples. The entire protocol from tissue microdissection through qRT-PCR analysis requires approximately 16 h.