由热友细菌产生的具有抗微生物活性的二次代谢物,来自高海拔的热水系统
Coral Pardo-Esté1, Johanna Cortés2, Juan Castro-Severyn3
1Laboratorio de Ecología Molecular y Microbiología Aplicada, Departamento de Ciencias Farmacéuticas, Facultad de Ciencias, Universidad Católica del Norte, Antofagasta, Chile.
Frontiers in microbiology
|October 16, 2024
概括
来自阿塔卡马沙漠的热友细菌产生新的抗菌和抗氧化化合物. 基因组测序和向培养揭示了多样化的生物活性分子,突出了新药发现的潜力.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 自然产品 化学 化学
背景情况:
- 热友微生物对高温环境具有独特的适应性,包括热稳定分子的合成.
- 隔离和培养热友植物带来了重大的方法挑战,阻碍了新生物活性化合物的发现.
- 高通量测序提供了一种强大的方法来选细菌基因组的功能潜力,指导有针对性的隔离工作.
研究的目的:
- 从阿塔卡马沙漠的微生物地毯中分离和描述热友细菌.
- 识别和分析这些热友的合成具有抗微生物和抗氧化特性的生物活性化合物的能力.
- 探索极端动物在发现新型自然产品方面的潜力.
主要方法:
- 从阿塔卡马沙漠微生物地毯中分离热友细菌菌株 (Bacillus LB7和Streptomyces LB8).
- 基因组挖掘用于预测生物活性化合物的生物合成途径.
- 针对性培养和分离物的生物化学表征.
- 在体外测试以确定抗微生物和抗氧化活性.
- 薄层染色学/质谱学 (TLC/MS) 用于化合物检测和质量确定.
主要成果:
- 两种热友菌株,Bacillus LB7和Streptomyces LB8,已经成功分离出来.
- 两种隔离物都显示出抗菌化合物的产生 (例如,Myxalamide C副产品) 和抗氧化剂 (例如,Dihydroxymandelic Acid,Amide biotine,Flavone副产品).
- 细菌LB7表现出更多样化的代谢物概况,超过50%的代谢物未被表征.
- 杆菌LB8主要产生抗氧化剂,其70%以上的化合物仍未分类,表明其具有新型结构.
结论:
- 来自阿塔卡马沙漠高海拔水热生态系统的热友微生物是新型生物活性化合物的有希望的来源.
- 基因组挖掘和有针对性的培养的结合是有效的发现和表征微生物自然产品.
- 从这些热友中进一步阐明未分类化合物的结构,有必要释放它们的全部治疗潜力.
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