Cited by 250Ovarian function and disordersReproductive Biology and FertilityGenetic and Kidney Cyst Diseases

Overexpression of a DENND1A isoform produces a polycystic ovary syndrome theca phenotype

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McAllister, Jan M., Modi, Bhavi, Miller, Bruce A., Biegler, Jessica, Bruggeman, Richard, Legro, Richard S., Strauss, Jerome F.·2014·Proceedings of the National Academy of Sciences

Abstract

Polycystic ovary syndrome (PCOS), characterized by increased ovarian androgen biosynthesis, anovulation, and infertility, affects 5-7% of reproductive-age women. Genome-wide association studies identified PCOS candidate loci that were replicated in subsequent reports, including DENND1A, which encodes a protein associated with clathrin-coated pits where cell-surface receptors reside. However, these studies provided no information about functional roles for DENND1A in the pathogenesis of PCOS. DENND1A protein was located in the cytoplasm as well as nuclei of theca cells, suggesting a possible role in gene regulation. DENND1A immunostaining was more intense in the theca of PCOS ovaries. Using theca cells isolated and propagated from normal cycling and PCOS women, we found that DENND1A variant 2 (DENND1A.V2) protein and mRNA levels are increased in PCOS theca cells. Exosomal DENND1A.V2 RNA was significantly elevated in urine from PCOS women compared with normal cycling women. Forced overexpression of DENND1A.V2 in normal theca cells resulted in a PCOS phenotype of augmented CYP17A1 and CYP11A1 gene transcription, mRNA abundance, and androgen biosynthesis. Knock-down of DENND1A.V2 in PCOS theca cells reduced androgen biosynthesis and CYP17A1 and CYP11A1 gene transcription. An IgG specific to DENND1A.V2 also reduced androgen biosynthesis and CYP17 and CYP11A1 mRNA when added to the medium of cultured PCOS theca cells. We conclude that the PCOS candidate gene, DENND1A, plays a key role in the hyperandrogenemia associated with PCOS. These observations have both diagnostic and therapeutic implications for this common disorder.

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  • Overexpression of the alternative spliced variant DENND1A.V2 recapitulated a PCOS phenotype in cultured theca cells obtained from normal women, indicating a role for this variant in excessive theca cell androgen production.

    “Overexpression of the alternative spliced variant, DENND1A.V2, of this gene recapitulated a PCOS phenotype in cultured theca cells obtained from normal women, indicating a role for this variant in the excessive theca cell androgen production [27].”

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  1. Gilling-Smith C, Storey H, Rogers V, Franks S (1997) Evidence for a primary abnor- mality in theca cell steroidogenesis in the polycystic ovarian syndrome. Clin Endo- crinol (Oxf) 47(93-99):1158-1165.

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Authors
McAllister, J. M., Modi, B., Miller, B. A., Biegler, J., Bruggeman, R., Legro, R. S., & Strauss, J. F.
Affiliations
  • Pennsylvania State University (US)
  • Virginia Commonwealth University (US)
  • Departments of aPathology and
Venue
Proceedings of the National Academy of Sciences
Published
2014-03-31
Volume
111
Issue
15
Pages
E1519-27
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1984174412
Cited by
250
References
54
Citations by year
2026: 10 · 2025: 23 · 2024: 32 · 2023: 13 · 2022: 19 · 2021: 25 · 2020: 24 · 2019: 19 · 2018: 16 · 2017: 15 · 2016: 25 · 2015: 20 · 2014: 9
FWCI
27.87
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Virginia Commonwealth University
  • National Institutes of Health (UL1TR000127, U54HD344449)
  • U.S. Public Health Service (UL1T000058, UL1T0000127)
  • National Center for Advancing Translational Sciences
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD33852, U54HD344449, R01HD033852, R01HD058300)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Ovarian function and disorders
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Reproductive Biology and Fertility
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Kidney Cyst Diseases
Keywords
polycystic ovary syndrome, DENND1A, theca cells, androgen production, CYP17A1, CYP11A1, hyperandrogenemia, exosomal RNA, urinary biomarkers, clathrin-coated pits, gene overexpression
MeSH terms
Analysis of Variance, Androgens, Cholesterol Side-Chain Cleavage Enzyme, Enzyme-Linked Immunosorbent Assay, Female, Humans, Immunoglobulin G, Immunohistochemistry, Polycystic Ovary Syndrome, Steroid 17-alpha-Hydroxylase, Theca Cells, Hyperandrogenism, Protein Isoforms, Guanine Nucleotide Exchange Factors, Death Domain Receptor Signaling Adaptor Proteins, Genome-Wide Association Study, Real-Time Polymerase Chain Reaction

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