Fluorescence and Bioluminescence Imaging of Angiogenesis in Flk1-Nano-lantern Transgenic Mice

Angiogenesis is important for normal development as well as for tumour growth. However, the molecular and cellular mechanisms underlying angiogenesis are not fully understood, partly because of the lack of a good animal model for imaging. Here, we report the generation of a novel transgenic (Tg) mou...

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Published in:Scientific reports 2017-04, Vol.7 (1), p.46597-46597, Article 46597
Main Authors: Matsushita, Jun, Inagaki, Shigenori, Nishie, Tomomi, Sakasai, Tomoki, Tanaka, Junko, Watanabe, Chisato, Mizutani, Ken-ichi, Miwa, Yoshihiro, Matsumoto, Ken, Takara, Kazuhiro, Naito, Hisamichi, Kidoya, Hiroyasu, Takakura, Nobuyuki, Nagai, Takeharu, Takahashi, Satoru, Ema, Masatsugu
Format: Article
Language:English
Subjects:
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Angiogenesis
Animal models
Aorta
Bacterial artificial chromosomes
Bioluminescence
Endothelial cells
Fetuses
Humanities and Social Sciences
Luminescence
multidisciplinary
Phototoxicity
Rodents
Science
Transgenic mice
Tumors
Vascular endothelial growth factor receptor 2
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Summary:Angiogenesis is important for normal development as well as for tumour growth. However, the molecular and cellular mechanisms underlying angiogenesis are not fully understood, partly because of the lack of a good animal model for imaging. Here, we report the generation of a novel transgenic (Tg) mouse that expresses a bioluminescent reporter protein, Nano-lantern , under the control of Fetal liver kinase 1 (Flk1 ). Flk1-Nano-lantern BAC Tg mice recapitulated endogenous Flk1 expression in endothelial cells and lymphatic endothelial cells during development and tumour growth. Importantly, bioluminescence imaging of endothelial cells from the aortic rings of Flk1-Nano-lantern BAC Tg mice enabled us to observe endothelial sprouting for 18 hr without any detectable phototoxicity. Furthermore, Flk1-Nano-lantern BAC Tg mice achieved time-lapse luminescence imaging of tumour angiogenesis in freely moving mice with implanted tumours. Thus, this transgenic mouse line contributes a unique model to study angiogenesis within both physiological and pathological contexts.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep46597