Adenoviral gene transfer of basic fibroblast growth factor promotes angiogenesis in rat brain

Adenoviral gene transfer of basic fibroblast growth factor promotes angiogenesis in rat brain
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碱性成纤维细胞生长因子的腺病毒基因转移促进大鼠脑血管生成

DOI:
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发表时间:
2000
期刊:
影响因子:
5.1
通讯作者:
Nobuo Hashimoto
Nobuo Hashimoto
中科院分区:
医学3区
文献类型:
--
作者:
Hiroyuki Yukawa;J. Takahashi;S. Miyatake;Masaaki Saiki;N. Matsuoka;Masayuki Akimoto;H. Yanamoto;Izumi Nagata;Haruhiko Kikuchi;Nobuo Hashimoto

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脑缺血性疾病常常导致发病和死亡,而新血管的诱导有望为这种闭塞性脑血管疾病提供治疗效果。在这项研究中,我们利用了两种含有碱性成纤维细胞生长因子(bFGF)(一种众所周知的血管生成因子)cDNA的复制缺陷型腺病毒载体,并检查了是否可以在大鼠大脑中观察到腺病毒基因转移的bFGF的生物血管生成活性。一种载体含有来自 bFGF 的天然 cDNA,不含分泌信号序列,另一种载体含有与 IL-2 分泌信号序列融合的相同 cDNA。在心室施用这些病毒载体后,基因转移细胞表现出针对抗bFGF抗体的高免疫反应性,并且在脑脊液中检测到非常高浓度的bFGF。血管生成活性的半定量分析表明,bFGF基因转移诱导正常大鼠脑中的血管生成,与没有分泌信号序列的载体相比,分泌形式的载体具有更明显的血管生成效应。这些结果表明,使用这些腺病毒载体进行bFGF基因转移可能有助于治疗缺血性脑血管疾病。
Cerebral ischemic disease often causes morbidity and mortality, while the induction of new blood vessels is expected to provide a therapeutic effect in this occlusive cerebrovascular disease. In this study, we utilized two replication-deficient adenoviral vectors containing cDNA from basic fibroblast growth factor (bFGF), a well-known angiogenic factor, and examined whether biological angiogenic activity of adenovirally gene-transferred bFGF could be observed in the rat brain. One vector contained native cDNA from bFGF without the secretory signal sequence and the other contained the same cDNA fused with an interleukin-2 secretory signal sequence. After ventricular administration of these viral vectors, gene-transferred cells demonstrated a high immunoreactivity against the anti-bFGF antibody and a remarkably high concentration of bFGF was detected in the cerebrospinal fluid. A semiquantitative analysis of angiogenic activity revealed that bFGF gene transfer induced angiogenesis in normal rat brains, with a more pronounced angiogenic effect seen with the vector of a secreted form than with the vector without a secretory signal sequence. These results suggest that bFGF gene transfer using these adenoviral vectors might be useful for the treatment of ischemic cerebrovascular disease.
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