共查询到18条相似文献,搜索用时 160 毫秒
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放线菌是发现大量药用天然产物的资源宝库,在微生物新药研究中占据着十分重要的地位。海洋放线菌生活环境特殊造就了其不同于陆地微生物独特的代谢途径,具有产生多种生物活性物质的潜力,是天然药用活性先导化合物的重要来源。从不同海洋生境来源放线菌的次级代谢产物中寻找生物活性物质已成为近年来的研究热点。目前已经分离到许多结构新颖、活性显著的化合物,为新药的研究提供了丰富的物质基础。本文主要对近3年(2015~2017)不同海洋生境来源且具有明显抗菌、抗病毒、抗肿瘤生物活性的放线菌次级代谢产物进行综述。 相似文献
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近年来,病原微生物的耐药性已严重威胁到人类健康,从海洋微生物中寻找对耐药菌敏感的化合物成为研究的热点,其中海洋真菌因其能够产生大量结构新颖、活性显著的代谢产物而受到广泛关注。本文按照海洋真菌的来源进行分类,从海洋动物来源真菌、红树林来源真菌、海藻来源真菌、海水来源真菌等4个方面,综述了2014年来发表的具有抗菌活性的海洋真菌来源的新的天然产物,主要介绍天然产物的化学结构和生物活性,化合物结构式曾有文献报道的未包括在内,为具有抗菌活性的海洋真菌天然产物的进一步研究开发提供了参考。 相似文献
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海洋拟诺卡菌由于其独特的代谢功能,成为海洋放线菌次级代谢产物的重要来源。根据2010-2013年初的海洋放线菌天然产物的统计表明,对拟诺卡菌的研究仅次于链霉菌。本文综述了从2001年的第一个海洋来源的拟诺卡菌天然产物至2018年6月17年间报道的65个海洋拟诺卡菌天然产物的微生物来源、结构及其生物活性。其结构包括吡喃酮类、二酮哌嗪类、多肽类等,其中吡喃酮类化合物是主要类型,占海洋拟诺卡菌天然产物总数的46%;而29%的海洋拟诺卡菌天然产物表现出抑菌、细胞毒、抗炎等生物活性。 相似文献
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目的介绍近年来对海洋真菌化学成分和生物活性的研究进展。方法检索国内外近几年关于海洋真菌次级代谢产物的文章,从其化学结构和生物活性方面对文献进行整理和综述。结果对海洋真菌次级代谢产物的结构类型及其活性予以综述。结论海洋微生物种类繁多,次级代谢产物丰富多样,是筛选新药的资源宝库,为海洋真菌的进一步研究和开发利用提供依据。 相似文献
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海洋生态环境(如高盐、高压、低温和寡营养等)以及海洋生物物种间复杂广泛关系赋予了海洋真菌独特的新陈代谢途径及适应机制,因此相比于陆地来源的相同种属真菌,海洋来源真菌能够产生结构独特、丰富多样、生物活性显著的化合物。迄今为止,已经有上万种化合物从海洋真菌中分离出来,但受限于传统培养技术,新结构和活性化合物的发现几率和速度都有所下降。“一株多化合物”(one stain-many compounds, OSMAC)策略是传统培养方法的发展,为寻找新型天然产物提供了新的方法,提高挖掘海洋真菌合成次级代谢产物的能力,逐渐被应用于海洋天然产物的发现。本文对OSMAC策略在海洋真菌次生代谢产物发现及活性研究中的应用进行总结,旨在为提高海洋真菌次生代谢产物的新颖性和多样性,加快先导化合物和生物资源的研究提供参考。 相似文献
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海洋微生物因其具有产生新型生物活性产物的巨大潜力,已受到全世界海洋研究人员的重视;近年来,从海洋微生物中已分离到许多结构新颖的抗肿瘤活性物质.综述来自海洋放线菌、海洋真菌、海洋细菌及海洋蓝细菌中的抗肿瘤活性物质的最新研究文献资料,对其研究进展作了分析,并展望了其发展前景. 相似文献
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Hamann MT 《Current pharmaceutical design》2003,9(11):879-889
In the last several decades the plants, animals and microbes from the marine environment have revealed a portion of what is clearly a tremendous resource for structurally diverse and bioactive secondary metabolites. Many of these extraordinarily sophisticated and bioactive natural products can be isolated in significant quantities without great difficulty. As a result these readily available bioactive natural products provide valuable starting materials for the rational generation of libraries of compounds prepared through semisynthesis and biocatalysis. A review of our work using marine natural products to generate rationally designed compound libraries and their biological activity against infectious diseases, cancer and neurological targets is presented. The marine natural products utilized to date as starting materials consist of compounds from a variety of structural classes and include: aureol, puupehenone, sarcophine, palinurin, and the manzamine alkaloids. The possibility to generate diverse bioactive products beginning with a marine natural product scaffold is a direct result of improvements made in the technologies to harvest samples from the ocean, purify and characterize complex natural products quickly and complete chemical reactions and biotransformations in parallel. As a result the vast resources of the ocean can now be utilized routinely to design and produce countless products to be evaluated as part of drug discovery and development programs. 相似文献
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Bérdy J 《The Journal of antibiotics》2012,65(8):385-395
The declining trends in microbial metabolite and natural products research and the refocusing of this research area are discussed. Renewing natural products research requires inexhaustible natural resources, as well as new genetic techniques and microbial sources, including endophytic microbes. The numbers of known bioactive metabolites are summarized according to their microbiological origin, biological activities and chemical structures. Synthetic and natural product-based libraries are also compared. Importantly, the wide range of microbial metabolite bioactivities, future trends and the importance of prioritizing natural products over synthetic compounds are emphasized. 相似文献
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《Environmental toxicology and pharmacology》2013,35(3):631-643
Marine microbes have been a storehouse of bioactive metabolites with tremendous potential as drug candidates. Marine microorganism derived secondary metabolites (chemical compounds/peptides) are considered to be a burning area of research since recent past. Many of such compounds have been proven to be anti-bacterial, anti-fungal, anti-algal, anti-HIV, anti-helminthic, anti-protozoan, anti-tumor and anti-allergic agents. Marine bacteria and fungi have been reported to be the producers of such compounds owing to their defense mechanisms and metabolic by products. Although the number of natural products isolated from these classes of marine microbial flora is large, a limited number of such compounds reach the clinical trial and even less number of them get approved as a drug. Here we discuss the recent studies on the isolation, characterization and the pharmacological significances of anti-bacterial, anti-fungal and anti-infective agents of marine microbial origin. Further, the clinical status of such compounds has also been discussed in comparison with those derived from their terrestrial counterparts. 相似文献
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Many important bioactive compounds have been discovered from natural sources using bioactivity-directed fractionation and
isolation (BDFl) [Balunas MJ, Kinghorn AD (2005) Drug discovery from medicinal plants. Life Sci 78:431–441]. Continuing discovery
has also been facilitated by the recent development of new bioassay methods. These bioactive compounds are mostly plant secondary
metabolites, and many naturally occurring pure compounds have become medicines, dietary supplements, and other useful commercial
products. Active lead compounds can also be further modified to enhance the biological profiles and developed as clinical
trial candidates. In this review, the authors will summarize research on many different useful compounds isolated or developed
from plants with emphasis placed on those recently discovered by the authors’ laboratories as antitumor and anti-HIV clinical
trial candidates.
Antitumor Agents 263 and Anti-AIDS Agents 74. 相似文献