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Housekeeping gene expression stability in reproductive tissues after mitogen stimulation
Marcia Arenas-Hernandez1, Rodrigo Vega-Sanchez
1vDepartment of Nutrition Research, Instituto Nacional de Perinatología Isidro Espinosa de Reyes, Montes Urales 800, Lomas Virreyes, Mexico City, Mexico.
BMC Research Notes
|July 24, 2013
Summary
This study found that GAPDH, ACTB, and RNA18S1 are stable housekeeping genes for normalizing gene expression in reproductive tissues stimulated with mitogens. Two genes are sufficient for accurate results in most tissues.
Area of Science:
- Reproductive biology
- Molecular biology
- Genomics
Background:
- Intrauterine infection can cause pregnancy complications like preterm labor via inflammatory responses.
- Mitogen stimulation is used to model infection-induced inflammation in reproductive tissues.
- Accurate gene expression analysis relies on stable housekeeping genes, which can be affected by stimuli.
Purpose of the Study:
- To assess the expression stability of GAPDH, ACTB, and RNA18S1 in cultured human reproductive tissues under mitogen stimulation.
- To determine the optimal reference genes for accurate gene expression normalization in these models.
Main Methods:
- Cultured explants of fetal membranes, placenta, umbilical cord, myometrium, and cervix were used.
- Tissues were stimulated with lipopolysaccharide or phytohemagglutinin for 24 hours.
- Real-time quantitative RT-PCR was performed, and gene expression stability was analyzed using geNorm software.
Main Results:
- GAPDH, ACTB, and RNA18S1 demonstrated high expression stability across all tested reproductive tissues.
- Pairwise variation analysis indicated that two reference genes are sufficient for reliable normalization.
- Optimal pairs for normalization were GAPDH/ACTB (cervix, fetal membranes, umbilical cord) and GAPDH/RNA18S1 (placenta, myometrium).
Conclusions:
- GAPDH, ACTB, and RNA18S1 are validated as suitable reference genes for normalizing gene expression in mitogen-stimulated reproductive tissues.
- These findings support the use of these housekeeping genes in studies investigating inflammation in pregnancy.
- The study provides specific recommendations for optimal reference gene combinations based on tissue type.
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