来自大西洋森林的真菌生物多样性与皮肤莱什曼病的生物活性代谢物
Juliana Cristina Pereira Calado1, Marina Valente Navarro1, Alison Felipe Alencar Chaves1
1Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, Sao Paulo, Brazil.
Chemistry & biodiversity
|August 28, 2025
概括
一种新型的Aspergillus fumigatus提取物 (I06) 显示出对Leishmania寄生虫的强烈活性,减少了小鼠的感染和病变. 这一发现突显了微生物的生物多样性,
科学领域:
- 微生物学
- 寄生虫学
- 药物发现
背景情况:
- 生物多样性是识别新生物活性化合物的关键资源.
- 莱什曼病仍然是一个重要的全球健康挑战,需要新的治疗策略.
研究的目的:
- 研究Aspergillus fumigatus提取物的抗莱什曼病毒活性.
- 评估一个有前途的提取物 (I06) 对Leishmania amazonensis的疗效和安全性.
主要方法:
- 从环境样本中分离出Aspergillus fumigatus
- 在巨中对原始提取物进行体外测试,以对抗Leishmania (Leishmania) amazonensis.
- 液体染色学-质谱学用于组件识别.
- 对寄生虫生存能力,亡标志物和反应性氧物种的评估.
- 在小鼠模型中进行的体内疗效和安全性研究.
主要成果:
- 提取物I06显著降低了巨细胞中的寄生虫负担和感染率,其IC50为1μg/ ml.
- 在Leishmania寄生虫中诱导了晚期亡,并迅速增加了活性氧物种.
- 这种提取物在体外和体内是非血解的.
- 在感染的小鼠中,I06的腹腔内注射减少了病变大小和寄生虫负载.
结论:
- 阿斯伯吉勒斯烟草提取物I06是一种强大的抗莱什曼病剂,具有良好的安全性.
- I06 是一个有前途的治疗候选者.
- 微生物生物多样性是发现新药线索的宝贵资源.
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