Am J Perinatol 2025; 42(08): 977-987
DOI: 10.1055/a-2405-1493
Review Article

Diabetes and Early Development: Epigenetics, Biological Stress, and Aging

Guanglei Wang
1   Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland
,
Wei-Bin Shen
1   Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland
,
Anna Wu Chen
1   Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland
,
E. Albert Reece
1   Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland
2   Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland
,
Peixin Yang
1   Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland School of Medicine, Baltimore, Maryland
2   Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland
› Institutsangaben

Funding None.
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Abstract

Pregestational diabetes, either type 1 or type 2 diabetes, induces structural birth defects including neural tube defects and congenital heart defects in human fetuses. Rodent models of type 1 and type 2 diabetic embryopathy have been established and faithfully mimic human conditions. Hyperglycemia of maternal diabetes triggers oxidative stress in the developing neuroepithelium and the embryonic heart leading to the activation of proapoptotic kinases and excessive cell death. Oxidative stress also activates the unfolded protein response and endoplasmic reticulum stress. Hyperglycemia alters epigenetic landscapes by suppressing histone deacetylation, perturbing microRNA (miRNA) expression, and increasing DNA methylation. At cellular levels, besides the induction of cell apoptosis, hyperglycemia suppresses cell proliferation and induces premature senescence. Stress signaling elicited by maternal diabetes disrupts cellular organelle homeostasis leading to mitochondrial dysfunction, mitochondrial dynamic alteration, and autophagy impairment. Blocking oxidative stress, kinase activation, and cellular senescence ameliorates diabetic embryopathy. Deleting the mir200c gene or restoring mir322 expression abolishes maternal diabetes hyperglycemia-induced senescence and cellular stress, respectively. Both the autophagy activator trehalose and the senomorphic rapamycin can alleviate diabetic embryopathy. Thus, targeting cellular stress, miRNAs, senescence, or restoring autophagy or mitochondrial fusion is a promising approach to prevent poorly controlled maternal diabetes-induced structural birth defects. In this review, we summarize the causal events in diabetic embryopathy and propose preventions for this pathological condition.

Key Points

  • Maternal diabetes induces structural birth defects.

  • Kinase signaling and cellular organelle stress are critically involved in neural tube defects.

  • Maternal diabetes increases DNA methylation and suppresses developmental gene expression.

  • Cellular apoptosis and senescence are induced by maternal diabetes in the neuroepithelium.

  • microRNAs disrupt mitochondrial fusion leading to congenital heart diseases in diabetic pregnancy.



Publikationsverlauf

Eingereicht: 13. Mai 2024

Angenommen: 26. August 2024

Accepted Manuscript online:
29. August 2024

Artikel online veröffentlicht:
27. September 2024

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