Cited by 61Retinal Diseases and TreatmentsAngiogenesis and VEGF in CancerConnective Tissue Growth Factor Research

Lack of thrombospondin 1 and exacerbation of choroidal neovascularization

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Wang, Shoujian, Sorenson, Christine M., Sheibani, Nader·2012·Archives of Ophthalmology

Abstract

OBJECTIVES: To assess the impact of thrombospondin 1(TSP1) deficiency on choroidal neovascularization (CNV)and to determine whether administration of a TSP1 antiangiogenic mimetic peptide attenuates CNV. METHODS: The impact of TSP1 deficiency on laser induced CNV was assessed using wild-type (TSP1 +/+) and TSP1-deficient (TSP1 −/−) mice. Three laser burns were placed in each eye of TSP1 +/+ and TSP1 −/− mice to induce CNV. Intravitreal injection of the TSP1 mimetic peptide was performed on days 1 and 7 postlaser in the mice.For quantitative measurements of neovascularization, intercellular adhesion molecule 2 staining was performed at 14 days postlaser of the choroidal-sclera flat mounts. The recruitment of macrophages to the sites of damage was investigated by immunohistochemistry. The CNV area was measured by intercellular adhesion molecule 2 staining and use of ImageJ software. RESULTS: The TSP1 −/− mice exhibited significantly larger areas of neovascularization on choroidal flat mounts compared with TSP1 +/ mice. This was consistent with enhanced recruitment of macrophages in TSP1 −/− mice compared with TSP1 +/+ mice 3 days postlaser. The development of CNV was significantly attenuated in mice receiving the TSP1 antiangiogenic mimetic peptide compared with those receiving vehicle alone. CONCLUSIONS: Deficiency of TSP1 contributes to enhanced choroidal neovascularization. This is consistent with the anti-inflammatory and antiangiogenic activity of TSP1. The TSP1 antiangiogenic peptide was effective in attenuation of CNV. CLINICAL RELEVANCE: Intravitreal injection of TSP1 antiangiogenic mimetic peptides may provide alternative treatment for CNV.

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  1. [36]Sakurai E Anand A Ambati BK Rooijen N Ambati J Macrophage depletion inhibits experimental choroidal neovascularization Invest. Ophthalmol. Vis. Sci 2003 44 3578 3585 12882810

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Authors
Wang, S., Sorenson, C. M., & Sheibani, N.
Affiliations
University of Wisconsin–Madison (US)
Corresponding author
Sheibani, Nader
Venue
Archives of Ophthalmology
Published
2012-05-01
Volume
130
Issue
5
Pages
615-20
ISSN
0003-9950 (ISSN-L)
OpenAlex
W2062675409
Cited by
61
References
48
Citations by year
2026: 3 · 2025: 2 · 2024: 5 · 2023: 5 · 2022: 5 · 2021: 4 · 2020: 8 · 2019: 2 · 2018: 6 · 2017: 5 · 2016: 2 · 2015: 6 · 2014: 3 · 2013: 5
FWCI
4.19
Type
journal article
Language
en
Open access
Locations
  • Archives of Ophthalmology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (1rc4ey021357-01)
  • National Eye Institute (RC4-EY021357, EY-18179, P30-EY-16665, EY21357, R01EY018179, EY16995, P30EY016665)
Topics
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Connective Tissue Growth Factor Research
Keywords
thrombospondin-1, choroidal neovascularization, laser-induced CNV, macrophage recruitment, ICAM-2, anti-inflammatory activity, intravitreal injection
MeSH terms
Animals, Disease Models, Animal, Female, Macrophages, Mice, Inbred C57BL, Microscopy, Fluorescence, Oligopeptides, Mice, Knockout, Thrombospondin 1, Choroidal Neovascularization, Angiogenesis Inhibitors, Biomimetics, Mice, Intravitreal Injections

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