Statistical modeling for selecting housekeeper genes.
Statistical modeling for selecting housekeeper genes.
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DOI:
10.1186/gb-2004-5-8-r59
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发表时间:
2004
期刊:
影响因子:
12.3
通讯作者:
Bernard PS
中科院分区:
文献类型:
--
作者:
Szabo A;Perou CM;Karaca M;Perreard L;Palais R;Quackenbush JF;Bernard PS
Statistical models are presented for selecting the best housekeepers to normalize quantitative data within a given tissue type and across different types of tissue samples. There is a need for statistical methods to identify genes that have minimal variation in expression across a variety of experimental conditions. These 'housekeeper' genes are widely employed as controls for quantification of test genes using gel analysis and real-time RT-PCR. Using real-time quantitative RT-PCR, we analyzed 80 primary breast tumors for variation in expression of six putative housekeeper genes (MRPL19 (mitochondrial ribosomal protein L19), PSMC4 (proteasome (prosome, macropain) 26S subunit, ATPase, 4), SF3A1 (splicing factor 3a, subunit 1, 120 kDa), PUM1 (pumilio homolog 1 (Drosophila)), ACTB (actin, beta) and GAPD (glyceraldehyde-3-phosphate dehydrogenase)). We present appropriate models for selecting the best housekeepers to normalize quantitative data within a given tissue type (for example, breast cancer) and across different types of tissue samples.
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