综合的多组学识别了管理A. fumigatus和K. pneumoniae之间物种间相互作用的途径
Tamires Bitencourt1,2,3, Filomena Nogueira1,2,3, Sabrina Jenull3,4
1CCRI - St. Anna Children's Cancer Research Institute, Vienna, Austria.
Communications biology
|November 12, 2024
概括
细菌和真菌的共同感染带来了诊断和治疗方面的挑战. 这项研究揭示了Aspergillus fumigatus和Klebsiella pneumoniae如何在代谢上相互作用,为共感染动态和潜在生物标志物提供了洞察力.
科学领域:
- 微生物学 微生物学
- 代谢学 代谢学 代谢学
- 病原体相互作用 病原体相互作用
背景情况:
- 涉及细菌和真菌的多微生物感染增加了发病率和死亡率.
- 在细菌-真菌相互作用 (BFI) 中的代谢相互作用是不太了解的.
- 烟虫和肺炎菌是重要的病原体,经常一起发现,特别是在呼吸道.
研究的目的:
- 在混合生物膜中研究Aspergillus fumigatus和Klebsiella pneumoniae之间的代谢动态和物种间的交流.
- 了解这些病原体如何在共感染环境中适应和相互作用.
主要方法:
- 利用综合的多omics方法来分析A. fumigatus和K. pneumoniae的混合生物膜.
- 在相互作用期间检查了两种物种的代谢重新连接和转化活动.
主要成果:
- Aspergillus fumigatus改变了它的新陈代谢,减少了翻译和连接二次到初级代谢途径,以应对Klebsiella pneumoniae.
- 克莱布西拉肺炎保持了其中央新陈代谢和翻译活动.
- 在与K. pneumoniae相互作用时,A. fumigatus表现出显著的代谢变化,突出其代谢灵活性.
结论:
- 细菌和真菌之间的相互作用涉及复杂的代谢适应,特别是A. fumigatus.
- 了解这些交叉通信动态对于管理多微生物感染至关重要.
- 确定了改善BFI的临床诊断和管理的潜在生物标志物.
相关概念视频
01:19Interactions Between Signaling Pathways
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
01:28Gene Regulation in Microbial Communities: Quorum Sensing
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
01:25Microbial Interactions: Mutualism
Mutualism is a symbiotic interaction in which all participating organisms benefit. These relationships can be obligate or facultative and are fundamental to ecosystem functions across diverse biological systems.Plant–Fungi MutualismOne well-known example is the association between plant roots and mycorrhizal fungi, such as Rhizophagus species. The fungal hyphae penetrate the root hairs and the epidermis, forming an extensive hyphal network that establishes a symbiotic association. Through this...
01:26Microbial Interactions: Cooperation
Microbial cooperation involves beneficial interactions in which different species work together for individual or mutual advantage. These interactions can profoundly influence ecological dynamics and evolutionary processes, and they are essential to many pathogenic and symbiotic relationships.Nematode–Bacteria CooperationA striking example is the relationship between the Gram-negative bacterium Xenorhabdus nematophila and the parasitic nematode Steinernema carpocapsae. Juvenile nematodes...
01:09Microbe-Plant Interactions
Microbe-plant interactions represent a dynamic spectrum of associations shaped by intricate chemical signaling. These interactions can be neutral, beneficial, or detrimental, and profoundly influence plant physiology, growth, and ecosystem function. The plant microbiome, comprising bacteria, fungi, archaea, protists, and viruses, plays a pivotal role in mediating these effects through surface colonization, internal colonization, or systemic symbiosis.Mutualistic associations, particularly with...
01:25Rapid Identification of Pathogens
MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...