在actinomycetes中解读静音生物合成基因集群的策略
Mohd Murtaza1,2, Puja Gupta1,3, Poonam Choudhary1,2
1Fermentation & Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, 180001, India.
Archives of microbiology
|December 9, 2025
概括
动氨菌具有生产有价值的二次代谢产物的未开发潜力. 这篇评论探讨了CRISPR/Cas和核糖体工程等策略,以激活静音生物合成基因集群 (BGCs),帮助发现新的抗生素来对抗抗菌素耐药性 (AMR).
科学领域:
- 微生物学 微生物学
- 自然产品化学 自然产品化学
- 合成生物学 合成生物学
背景情况:
- 动态细菌是二次代谢物的丰富生产者,对于发现生物活性化合物至关重要.
- 在标准实验室条件下,Actinobacteria生物合成基因集群 (BGCs) 的很大一部分保持沉默或表达不足,限制了天然产品的发现.
- 沉默的BGCs代表着一个巨大的,未被探索的化学多样性的储备.
研究的目的:
- 审查和讨论激活Actinobacteria中静默或神秘的生物合成基因集群 (BGCs) 的策略.
- 以突出方法,增强从Actinobacteria新生物活性化合物的发现.
- 强调这些策略在应对抗菌素耐药性 (AMR) 挑战中的作用.
主要方法:
- 使用PCR向基因替代 (PCR-TR) 的方法
- 在Cre-LoxP重组系统中.
- 转录因子的诱
- 核糖体工程是指对核糖体进行核糖体工程.
- 这种技术是CRISPR/Cas技术.
- 使用诱导器的使用.
- 计算和实验平台的整合.
主要成果:
- 各种分子和基因工程策略可以成功地激活Actinobacteria中的静音BGC.
- 诱惑器有助于识别和激活神秘的BGC.
- 结合不同的方法可以加速探索隐藏的化学多样性.
- 成功激活导致产生具有潜在治疗应用的新型二次代谢产物.
结论:
- 在Actinobacteria中解锁沉默的BGC是发现新生物活性天然产品的关键.
- 先进的技术,包括CRISPR/Cas和核糖体工程,对于克服BGC沉默至关重要.
- 这种方法对开发新抗生素来打击抗菌素耐药性 (AMR) 具有重大前景.
相关概念视频
Prokaryotic Transcriptional Activators and Repressors
25.1K
The organization of prokaryotic genes in their genome is notably different from that of eukaryotes. Prokaryotic genes are organized, such that the genes for proteins involved in the same biochemical process or function are located together in groups. This group of genes, along with their regulatory elements, are collectively known as an operon. The functional genes in an operon are transcribed together to give a single strand of mRNA known as polycistronic mRNA.
Transcription of prokaryotic...
Transcription of prokaryotic...
25.1K
Bacterial Phylum Actinobacteria
576
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
576
Cytoskeletal Proteins in Bacteria
4.1K
Bacterial cells were initially considered simple, randomly organized structures lacking a cytoskeleton. However, the discovery of cytoskeleton homologs in bacteria led to the change of this opinion. Bacterial cytoskeletal filaments regulate the cell shape, cell polarity, cell division, and partitioning of plasmids during cell division. It was later discovered that bacterial cytoskeletal proteins, mainly actin and tubulin homologs, are diverse compared to their eukaryotic counterparts. On the...
4.1K
Biosynthesis in Bacteria
536
Biosynthesis in bacteria is a fundamental anabolic process that generates essential macromolecules, including proteins, nucleic acids, lipids, and polysaccharides. These macromolecules are critical for cellular growth, replication, and function. The process is tightly regulated and energetically linked to catabolic pathways to ensure optimal resource utilization.Biosynthetic pathways begin with precursor metabolites such as pyruvate, acetyl-CoA, and glucose-6-phosphate derived from glycolysis,...
536
Coordination of Gene Expression Processes in Bacteria
547
The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...
547
Gene Regulation During Sporulation
408
Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...
408


