功能性颗粒细胞-巨菌殖民地刺激因子 (GM-CSF) 由持续感染工程减弱犬病毒的犬囊细胞提供
Katarzyna Marek1,2, Federico Armando1, Thanaporn Asawapattanakul1,2
1Department of Pathology, University of Veterinary Medicine Hannover, Foundation, 30559 Hannover, Germany.
Pathogens (Basel, Switzerland)
|July 29, 2023
概括
颗粒细胞-巨细胞殖民地刺激因子 (GM-CSF) 在癌症中表现出双重效应. 这项研究设计了一个病毒,在狗癌细胞中产生GM-CSF,发现它活跃和稳定,而不会促进瘤生长.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
背景情况:
- 颗粒细胞-巨细胞殖民地刺激因子 (GM-CSF) 对于癌症治疗中的免疫反应至关重要.
- 转基因-CSF加速瘤细胞增殖的潜力在癌症治疗中构成了挑战.
- 在进行体内研究之前,了解GM-CSF在感染瘤细胞中的体外功能至关重要.
研究的目的:
- 通过感染犬病毒 (CDV) 的犬囊细胞肉瘤 (HS) 细胞来功能性地描述GM-CSF的产生.
- 评估病毒产生的GM-CSF的功能性和稳定性.
- 为了确定GM-CSF对HS细胞增殖和运动性的影响.
主要方法:
- 用基因工程改造的犬病毒 (CDV-Ondneon-GM-CSF) 来表达犬 GM-CSF.
- 感染了工程病毒的犬类囊性肉瘤 (DH82) 细胞.
- 评估了GM-CSF的生产,活性和pH稳定性.
- 评估了GM-CSF对DH82细胞增殖和运动性的影响.
主要成果:
- 持续感染的DH82细胞产生了大量活跃的,pH稳定的GM-CSF.
- 通过增加HeLa细胞的扩散来证实GM-CSF的生产.
- 在对GM-CSF的反应中,DH82细胞没有表现出增加的增殖或运动性.
结论:
- 改造的CDV菌株有效地诱导了犬类HS细胞中稳定的GM-CSF产生.
- 缺乏对DH82细胞的有害影响表明瘤性病毒疗法的潜力.
- 这种表达GM-CSF的病毒是一个有希望的候选人,可以增强CDV对狗HS的抗癌性质.
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