Cited by 74Pregnancy and preeclampsia studiesReproductive System and PregnancyCancer, Hypoxia, and Metabolism

Energy status and HIF signalling in chorionic villi show no evidence of hypoxic stress during human early placental development

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Cindrova-Davies, T., van Patot, M. Tissot, Gardner, L., Jauniaux, E., Burton, G. J., Charnock-Jones, D. S.·2015·MHR: Basic science of reproductive medicine

Abstract

Early human placental and embryonic development occurs in a physiologically low oxygen environment supported by histiotrophic secretions from endometrial glands. In this study, we compare the placental metabolomic profile in the first, second and third trimesters to determine whether the energy demands are adequately met in the first trimester. We investigated whether hypoxia-inducible factors, HIF-1α and/or HIF-2α, might regulate transcription during the first trimester. First and second trimester tissue was collected using a chorionic villus sampling-like (CVS) technique. Part of each villus sample was frozen immediately and the remainder cultured under 2 or 21% O2 ± 1 mM H2O2, and ±the p38 MAPK pathway inhibitor, PD169316. Levels of HIF-1α were assessed by western blotting and VEGFA, PlGF and GLUT3 transcripts were quantified by RT-PCR. Term samples were collected from normal elective Caesarean deliveries. There were no significant differences in concentrations of ADP, NAD(+), lactate, and glucose, and in the ATP/ADP ratio, across gestational age. Neither HIF-1α nor HIF-2α could be detected in time-zero CVS samples. However, culture under any condition (2 or 21% O2 ± 1 mM H2O2) increased HIF-1α and HIF-2α. HIF-1α and HIF-2α were additionally detected in specimens retrieved after curettage. HIF-1α stabilization was accompanied by significant increases in VEGFA and GLUT3 and a decrease in PlGF mRNAs. These effects were suppressed by PD169316. In conclusion, our data suggest that first trimester placental tissues are not energetically compromised, and that HIF-1α is unlikely to play an appreciable role in regulating transcriptional activity under steady-state conditions in vivo. However, the pathway may be activated by stress conditions.

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Crossref · 10.1093/molehr/gau105

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  • HIF-1 and HIF-2 can be stabilized in chorionic villus sampling samples by stress and activate downstream targets, including VEGF.

    “Equally, HIF-1 and HIF-2 can be stabilized in CVS samples by stress and activate downstream targets, including VEGF (112).”

    From Placental Origins of Chronic Disease (2016) · cites this paper as [112]

  • Stress induced on tissues during collection, especially by curettage, is a potential confounder in studies of placental HIF expression.

    “Another potential confounder is stress induced on the tissues during collection, especially when this is performed by curettage when they are inevitably mixed with maternal blood (112).”

    From Placental Origins of Chronic Disease (2016) · cites this paper as [112]

  • The ATP/ADP ratio is the same during the first and early second trimesters and at term.

    “This is supported by the observation that the ATP/ADP ratio is the same during the first and early second trimesters and at term (112).”

    From Placental Origins of Chronic Disease (2016) · cites this paper as [112]

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Authors
Cindrova-Davies, T., van Patot, M. T., Gardner, L., Jauniaux, E., Burton, G. J., & Charnock-Jones, D. S.
Affiliations
  • University of Cambridge (GB)
  • The Royal Free Hospital (GB)
Corresponding author
Burton, G. J.
Venue
MHR: Basic science of reproductive medicine
Published
2014-11-11
Volume
21
Issue
3
Pages
296-308
ISSN
  • 1360-9947 (ISSN-L)
  • 1460-2407
OpenAlex
W2160782334
Cited by
74
References
45
Citations by year
2026: 5 · 2025: 7 · 2024: 6 · 2023: 5 · 2022: 5 · 2021: 7 · 2020: 9 · 2019: 5 · 2018: 9 · 2017: 7 · 2016: 3 · 2015: 5 · 2013: 1
FWCI
5.32
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Molecular Human Reproduction (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Apollo (University of Cambridge) (submittedVersion, cc-by)
Funders
Wellcome Trust (084804, 084804/2/08/Z)
Topics
  • Health Sciences › Medicine › Obstetrics and Gynecology › Pregnancy and preeclampsia studies
  • Life Sciences › Immunology and Microbiology › Immunology › Reproductive System and Pregnancy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
Keywords
placental development, hypoxia, HIF-1α, HIF-2α, chorionic villi, placental metabolomics, energy metabolism, VEGF-A, placental growth factor, GLUT3, p38 MAPK, PD169316, low oxygen environment, first trimester, oxidative stress
MeSH terms
Endothelial PAS Domain-Containing Protein 1, Adenosine Diphosphate, Adenosine Triphosphate, Adult, Chorionic Villi, Energy Metabolism, Female, Humans, Hydrogen Peroxide, Imidazoles, Membrane Proteins, Oxygen, Placentation, Pregnancy, Pregnancy Trimesters, Transcription, Genetic, Signal Transduction, Cell Hypoxia, Gene Expression Regulation, Developmental, Vascular Endothelial Growth Factor A, p38 Mitogen-Activated Protein Kinases, Glucose Transporter Type 3, Basic Helix-Loop-Helix Transcription Factors, Basic Helix-Loop-Helix Proteins, Hypoxia-Inducible Factor 1, alpha Subunit, Primary Cell Culture

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