Abstract
Purpose
A symbiotic relationship between ovarian granulosa cells (GC) and the developing oocyte is critical. Genetic modulations in GC’s can lead to reproductive insufficiency, highlighting the role of GC’s in reproductive competence. Utilizing gene expression analyses in cumulus GC’s, we attempt to enhance our understanding of mechanisms that may contribute to poor reproductive capacity in young women with diminished ovarian reserve (DOR).
Methods
We measured gremlin 1 (GREM1) gene expression in GC’s from infertile women <38 years undergoing in vitro fertilization in the context of DOR.
Results
GREM1, a member of the differential screening-selected gene aberrative in neuroblastoma (DAN) family of genes known for its highly regulated expression pattern during folliculogenesis and a downstream effecter of oocyte-derived growth and differentiation factor 9, was down-regulated 3-fold (−3.08) in women with DOR versus control; down-regulation was confirmed by qRT-PCR (−4.02).
Conclusion
This is the first demonstration linking differential expression of Gremlin with etiology of infertility in women.
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Acknowledgements
The authors would like to acknowledge the invaluable contributions of Dr. Andrew Brooks in microarray and RT-PCR interpretation, and Joshua Hurwitz MD, Athena Zapantis BS, and Michael Nihsen MS for technical assistance.
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All research was performed in the Division of REI, Department of Obstetrics, Gynecology & Women’s Health, Albert Einstein College of Medicine, Bronx, NY and Montefiore’s Institute for Reproductive Medicine and Health, Hartsdale, NY. A portion of this work was presented at the Annual Meeting of the Society for Gynecologic Investigation, March 2008.
Financial Support
This investigation was supported by grants from Ferring Pharmaceuticals, Inc (to SJ) and NIH grants 5K12 RR17672 (to LP) and K24 CD41978 (to NS).
Capsule Gremlin 1 expression is impaired in cumulus granulosa cells of young women with diminished ovarian reserve (DOR), suggesting a possible mechanism for the ovarian dysfunction associated with DOR.
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Jindal, S., Greenseid, K., Berger, D. et al. Impaired Gremlin 1 (GREM1) expression in cumulus cells in young women with diminished ovarian reserve (DOR). J Assist Reprod Genet 29, 159–162 (2012). https://doi.org/10.1007/s10815-011-9684-8
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DOI: https://doi.org/10.1007/s10815-011-9684-8