The effect of fibroblast growth factor 2 on neovascular vessels depends on the stage of angiogenesis
Objective: The exact relationship between fibroblast growth factor 2 (FGF2) and choroidal neovascularization (CNV) remains unclear. In this study, using optical coherence tomography angiography (OCTA) and FGF2-tg mice which are transgenic mice with a rhodopsin promoter/FGF2 gene fusion, we aimed to...
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Elsevier
2024-11-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024158744 |
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| author | Yuki Hattori Haruhiko Yamada Hidetsugu Mori Shinpei Oba Kaito Yokota Masatoshi Omi Yuichi Yamamoto Keiko Toyama Masayuki Ohnaka Kanji Takahashi Hisanori Imai |
| author_facet | Yuki Hattori Haruhiko Yamada Hidetsugu Mori Shinpei Oba Kaito Yokota Masatoshi Omi Yuichi Yamamoto Keiko Toyama Masayuki Ohnaka Kanji Takahashi Hisanori Imai |
| author_sort | Yuki Hattori |
| collection | DOAJ |
| description | Objective: The exact relationship between fibroblast growth factor 2 (FGF2) and choroidal neovascularization (CNV) remains unclear. In this study, using optical coherence tomography angiography (OCTA) and FGF2-tg mice which are transgenic mice with a rhodopsin promoter/FGF2 gene fusion, we aimed to investigate the dynamics of FGF2's role in angiogenesis over time. Methods: We developed laser-induced CNV models of FGF2-tg and wild-type (WT) mice and then separated them into two groups using different laser photocoagulation (PC) conditions. The first group received 3 intense PC shots (1st PC) altogether (one-time PC group), while the other group received 3 intense PC shots (1st PC) followed by 6 additional weak PC shots (2 nd PC) on the 7th day after 1st PC (two-times PC group). Results: Using OCTA to observe vessel changes within the same individual over time, there was no difference in the timing of vessel transition from the CNV development phase to the CNV regression phase between FGF2-tg and WT mice in the one-time PC group. In contrast, the neovascular vessels in the two-times PC group of FGF2-tg mice were maintained at least 28 days post-2nd PC without regression. In addition, mature vessels surrounded by PDGFRβ positive pericytes and α-SMA positive smooth muscle cells were observed. Real-time qPCR showed a substantial increase in apelin mRNA expression in the one-time PC group of FGF2-tg, rather than VEGF-A (p < 0.05, n = 5 or 6). Moreover, the expression levels of PDGFRβ, apelin, and Ang1 were significantly higher in FGF2-tg mice of two-times PC group than in WT mice (p < 0.05, n = 5 or 6). Conclusions: FGF2 not only promotes neovascularization via the apelin/APJ system, which is independent of VEGF signaling pathway, but also helps maintain and stabilize pre-existing neovascular vessels by stimulating PDGFRβ and Ang1. The effect of FGF2 on the neovascular vessels depends on the stage of angiogenesis. |
| format | Article |
| id | doaj-art-443db9cccb914a34ae4d12c11e60041c |
| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj-art-443db9cccb914a34ae4d12c11e60041c2024-11-15T06:13:45ZengElsevierHeliyon2405-84402024-11-011021e39843The effect of fibroblast growth factor 2 on neovascular vessels depends on the stage of angiogenesisYuki Hattori0Haruhiko Yamada1Hidetsugu Mori2Shinpei Oba3Kaito Yokota4Masatoshi Omi5Yuichi Yamamoto6Keiko Toyama7Masayuki Ohnaka8Kanji Takahashi9Hisanori Imai10Department of Ophthalmology, Kansai Medical University, Osaka, Japan; Corresponding author. Department of Ophthalmology Kansai Medical University 2-5-1 Shinmachi, Hirakata, Osaka, 573-1191, Japan.Yamada Eye Clinic, Osaka, JapanDepartment of Ophthalmology, Kansai Medical University, Osaka, JapanDepartment of Ophthalmology, Kansai Medical University, Osaka, JapanDepartment of Ophthalmology, Kansai Medical University, Osaka, JapanDepartment of Ophthalmology, Kansai Medical University, Osaka, JapanDepartment of Ophthalmology, Kansai Medical University, Osaka, JapanDepartment of Ophthalmology, Kansai Medical University, Osaka, JapanDepartment of Ophthalmology, Kansai Medical University, Osaka, JapanDepartment of Ophthalmology, Kansai Medical University, Osaka, JapanDepartment of Ophthalmology, Kansai Medical University, Osaka, JapanObjective: The exact relationship between fibroblast growth factor 2 (FGF2) and choroidal neovascularization (CNV) remains unclear. In this study, using optical coherence tomography angiography (OCTA) and FGF2-tg mice which are transgenic mice with a rhodopsin promoter/FGF2 gene fusion, we aimed to investigate the dynamics of FGF2's role in angiogenesis over time. Methods: We developed laser-induced CNV models of FGF2-tg and wild-type (WT) mice and then separated them into two groups using different laser photocoagulation (PC) conditions. The first group received 3 intense PC shots (1st PC) altogether (one-time PC group), while the other group received 3 intense PC shots (1st PC) followed by 6 additional weak PC shots (2 nd PC) on the 7th day after 1st PC (two-times PC group). Results: Using OCTA to observe vessel changes within the same individual over time, there was no difference in the timing of vessel transition from the CNV development phase to the CNV regression phase between FGF2-tg and WT mice in the one-time PC group. In contrast, the neovascular vessels in the two-times PC group of FGF2-tg mice were maintained at least 28 days post-2nd PC without regression. In addition, mature vessels surrounded by PDGFRβ positive pericytes and α-SMA positive smooth muscle cells were observed. Real-time qPCR showed a substantial increase in apelin mRNA expression in the one-time PC group of FGF2-tg, rather than VEGF-A (p < 0.05, n = 5 or 6). Moreover, the expression levels of PDGFRβ, apelin, and Ang1 were significantly higher in FGF2-tg mice of two-times PC group than in WT mice (p < 0.05, n = 5 or 6). Conclusions: FGF2 not only promotes neovascularization via the apelin/APJ system, which is independent of VEGF signaling pathway, but also helps maintain and stabilize pre-existing neovascular vessels by stimulating PDGFRβ and Ang1. The effect of FGF2 on the neovascular vessels depends on the stage of angiogenesis.http://www.sciencedirect.com/science/article/pii/S2405844024158744FGF2Vessels maturationOCTAApelinAng1PDGFRβ |
| spellingShingle | Yuki Hattori Haruhiko Yamada Hidetsugu Mori Shinpei Oba Kaito Yokota Masatoshi Omi Yuichi Yamamoto Keiko Toyama Masayuki Ohnaka Kanji Takahashi Hisanori Imai The effect of fibroblast growth factor 2 on neovascular vessels depends on the stage of angiogenesis Heliyon FGF2 Vessels maturation OCTA Apelin Ang1 PDGFRβ |
| title | The effect of fibroblast growth factor 2 on neovascular vessels depends on the stage of angiogenesis |
| title_full | The effect of fibroblast growth factor 2 on neovascular vessels depends on the stage of angiogenesis |
| title_fullStr | The effect of fibroblast growth factor 2 on neovascular vessels depends on the stage of angiogenesis |
| title_full_unstemmed | The effect of fibroblast growth factor 2 on neovascular vessels depends on the stage of angiogenesis |
| title_short | The effect of fibroblast growth factor 2 on neovascular vessels depends on the stage of angiogenesis |
| title_sort | effect of fibroblast growth factor 2 on neovascular vessels depends on the stage of angiogenesis |
| topic | FGF2 Vessels maturation OCTA Apelin Ang1 PDGFRβ |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024158744 |
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