Comparison of hybridization-based and sequencing-based gene expression technologies on biological replicates
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- 作者：Fang Liu (1) (3)
Tor-Kristian Jenssen (3)
Jeff Trimarchi (4)
Claudio Punzo (4)
Connie L Cepko (4) (5)
Lucila Ohno-Machado (6)
Eivind Hovig (1) (2)
Winston Patrick Kuo (6) (7) (8) - 刊名：BMC Genomics
- 出版年：2007
- 出版时间：December 2007
- 年：2007
- 卷：8
- 期：1
- 全文大小：746KB
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Tor-Kristian Jenssen (3)
Jeff Trimarchi (4)
Claudio Punzo (4)
Connie L Cepko (4) (5)
Lucila Ohno-Machado (6)
Eivind Hovig (1) (2)
Winston Patrick Kuo (6) (7) (8)
1. Department of Tumor Biology, Rikshopitalet-Radiumhospitalet Medical Center, NO-0310, Montebello, Oslo, Norway
3. PubGene AS Vinderen, NO-0319, Oslo, Norway
4. Department of Genetics, Harvard Medical School, Boston, MA, USA
5. Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
6. Decision Systems Group, Brigham and Women's Hospital, Boston, MA, USA
2. Department of Medical Informatics, Rikshopitalet-Radiumhospitalet Medical Center, NO-0310, Montebello, Oslo, Norway
7. Department of Developmental Biology, Harvard School of Dental Medicine, Boston, MA, USA
8. Department of Organismic and Evolutionary Biology/Faculty of Arts and Sciences, Harvard University, Cambridge, MA, USA
文摘
Background High-throughput systems for gene expression profiling have been developed and have matured rapidly through the past decade. Broadly, these can be divided into two categories: hybridization-based and sequencing-based approaches. With data from different technologies being accumulated, concerns and challenges are raised about the level of agreement across technologies. As part of an ongoing large-scale cross-platform data comparison framework, we report here a comparison based on identical samples between one-dye DNA microarray platforms and MPSS (Massively Parallel Signature Sequencing). Results The DNA microarray platforms generally provided highly correlated data, while moderate correlations between microarrays and MPSS were obtained. Disagreements between the two types of technologies can be attributed to limitations inherent to both technologies. The variation found between pooled biological replicates underlines the importance of exercising caution in identification of differential expression, especially for the purposes of biomarker discovery. Conclusion Based on different principles, hybridization-based and sequencing-based technologies should be considered complementary to each other, rather than competitive alternatives for measuring gene expression, and currently, both are important tools for transcriptome profiling.