Cited by 18Angiogenesis and VEGF in CancerDevelopmental Biology and Gene RegulationPancreatic function and diabetes

The periphery of the human fetal adrenal gland is a site of angiogenesis: zonal differential expression and regulation of angiogenic factors

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Ishimoto, Hitoshi, Minegishi, Kazuhiro, Higuchi, Takayuki, Furuya, Masataka, Asai, Satoshi, Kim, Seon Hye, Tanaka, Mamoru, Yoshimura, Yasunori +1 more·2008·The Journal of Clinical Endocrinology & Metabolism

Abstract

CONTEXT: Although the inner fetal zone (FZ) of the mid-gestation human fetal adrenal (HFA) produces dehydroepiandrosterone sulfate, the function of the outer definitive zone (DZ) remains less clear. We have proposed that the DZ phenotype is that of a pool of progenitor cells, many of which are mitotically active. Recently, we studied HFA expression of a family of vascular endothelial cell-specific angiogenic factors, the angiopoietins (Angs), and demonstrated that Ang2 was localized predominantly in the periphery of the gland. Ang1 stabilizes, whereas Ang2 destabilizes, vessels, increasing responsiveness to angiogenic stimuli such as vascular endothelial growth factor (VEGF)-A and fibroblast growth factor (FGF)-2. OBJECTIVE: Our objective was to test the hypothesis that the periphery of the HFA is a site of angiogenesis. DESIGN: Studies were conducted involving RNA, frozen sections, and primary cell cultures from midgestation HFAs. MAIN OUTCOME MEASURES: Immunofluorescence, laser capture microdissection, and real-time quantitative RT-PCR were used. RESULTS: Double immunostaining demonstrated that proliferating endothelial cells were limited to the DZ and DZ/FZ border. Ang2 mRNA was primarily expressed in the DZ, whereas Ang1 mRNA was primarily in the FZ. VEGF-A and FGF-2 mRNA levels were higher in the DZ. FGF-2 (10 ng/ml) induced Ang2 mRNA by 4-fold in both zones of cells (P < 0.01, at 24 h), but not Ang1 or VEGF-A mRNA. CONCLUSION: Data suggest that angiogenesis occurs at the periphery of the HFA. The DZ-predominant expression of Ang2 may be explained, in part, by the parallel pattern of FGF-2 expression.

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Crossref · 10.1210/jc.2007-2509

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  • The enlarged fetal zone (FZ) in ACTH stimulated tissue found in the present study after both 7 and 14 days treatment could also explain the tendency towards a decreased number of proliferating cells, since definitive zone (DZ) cells are known to have a higher proliferation rate than FZ cells.

    “The enlarged FZ in ACTH stimulated tissue found in the present study after both 7and 14-days treatment could also explain the tendency towards a decreased number of proliferating cells since DZ cells are known to have a higher proliferation rate than FZ cells (25).”

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Authors
Ishimoto, H., Minegishi, K., Higuchi, T., Furuya, M., Asai, S., Kim, S. H., Tanaka, M., Yoshimura, Y., & Jaffe, R. B.
Affiliations
  • University of California, San Francisco (US)
  • Keio University (JP)
Corresponding author
Jaffe, Robert B.
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2008-06-01
Volume
93
Issue
6
Pages
2402-2408
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W1982182913
Cited by
18
References
45
Citations by year
2024: 2 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 2 · 2019: 1 · 2015: 1 · 2012: 2
FWCI
0.69
Type
journal article
Language
en
Open access
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • University of California, San Francisco
  • Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh
  • Japan Society for the Promotion of Science (94143, 18659313, 19591288)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (F32HD008478, HD-08478)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
Keywords
angiogenesis, angiopoietin-2, angiopoietin-1, VEGF-A, fibroblast growth factor 2, endothelial cell proliferation, fetal adrenal development
MeSH terms
Adrenal Glands, Angiotensin I, Angiotensin II, Cell Differentiation, Cells, Cultured, Female, Fetus, Gestational Age, Humans, Models, Biological, Pregnancy, RNA, Messenger, Tissue Distribution, Fibroblast Growth Factor 2, Gene Expression Regulation, Developmental, Neovascularization, Physiologic, Vascular Endothelial Growth Factor A, Angiogenic Proteins, Endothelial Cells

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