南极真菌产生具有抗菌和抗寄生虫活性的色素。
Antarctic fungi produce pigment with antimicrobial and antiparasitic activities.
机构信息
Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina (UFSC), Florianópolis, SC, Brazil.
Bioprocess and Biotechnology Engineering Undergraduate Program, Federal University of Tocantins (UFT), Gurupi, TO, Brazil.
出版信息
Braz J Microbiol. 2024 Jun;55(2):1251-1263. doi: 10.1007/s42770-024-01308-y. Epub 2024 Mar 16.
Natural pigments have received special attention from the market and industry as they could overcome the harm to health and the environmental issues caused by synthetic pigments. These pigments are commonly extracted from a wide range of organisms, and when added to products they can alter/add new physical-chemical or biological properties to them. Fungi from extreme environments showed to be a promising source in the search for biomolecules with antimicrobial and antiparasitic potential. This study aimed to isolate fungi from Antarctic soils and screen them for pigment production with antimicrobial and antiparasitic potential, together with other previously isolated strains A total of 52 fungi were isolated from soils in front of the Collins Glacier (Southeast border). Also, 106 filamentous fungi previously isolated from the Collins Glacier (West border) were screened for extracellular pigment production. Five strains were able to produce extracellular pigments and were identified by ITS sequencing as Talaromyces cnidii, Pseudogymnoascus shaanxiensis and Pseudogymnoascus sp. All Pseudogymnoascus spp. (SC04.P3, SC3.P3, SC122.P3 and ACF093) extracts were able to inhibit S. aureus ATCC6538 and two (SC12.P3, SC32.P3) presented activity against Leishmania (L.) infantum, Leishmania amazonensis and Trypanossoma cruzii. Extracts compounds characterization by UPLC-ESI-QToF analysis confirmed the presence of molecules with biological activity such as: Asterric acid, Violaceol, Mollicellin, Psegynamide A, Diorcinol, Thailandolide A. In conclusion, this work showed the potential of Antartic fungal strains from Collins Glacier for bioactive molecules production with activity against Gram positive bacteria and parasitic protozoas.
天然色素因其克服了合成色素对健康和环境造成的危害而受到市场和行业的特别关注。这些色素通常从广泛的生物体中提取,当添加到产品中时,它们可以改变/添加新的物理化学或生物特性。来自极端环境的真菌被证明是寻找具有抗菌和抗寄生虫潜力的生物分子的有前途的来源。本研究旨在从南极土壤中分离真菌,并筛选具有抗菌和抗寄生虫潜力的色素生产,同时还筛选了之前从柯林斯冰川(西边界)分离的 106 株丝状真菌。总共从柯林斯冰川(东南边界)前的土壤中分离出 52 株真菌。还筛选了之前从柯林斯冰川(西边界)分离的 106 株丝状真菌的细胞外色素生产。有 5 株菌能够产生细胞外色素,并通过 ITS 测序鉴定为 Talaromyces cnidii、Pseudogymnoascus shaanxiensis 和 Pseudogymnoascus sp。所有 Pseudogymnoascus spp.(SC04.P3、SC3.P3、SC122.P3 和 ACF093)提取物均能抑制金黄色葡萄球菌 ATCC6538,其中两种(SC12.P3、SC32.P3)对利什曼原虫(L.)婴儿、利什曼原虫亚马逊和锥虫克鲁兹具有活性。UPLC-ESI-QToF 分析对提取物化合物的表征证实了存在具有生物活性的分子,如:Asterric acid、Violaceol、Mollicellin、Psegynamide A、Diorcinol、Thailandolide A。总之,这项工作表明柯林斯冰川南极真菌菌株具有生产对抗革兰氏阳性菌和寄生原生动物的生物活性分子的潜力。