MBRA-2: a Modified Chemostat System to Culture Biofilms.

MBRA-2: a Modified Chemostat System to Culture Biofilms.
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DOI:
10.1128/spectrum.02928-22
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发表时间:
2023-02-14
影响因子:
3.7
通讯作者:
--
中科院分区:
生物学1区
文献类型:
--
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研究微生物生态学的依赖于培养的方法旨在通过简化高分辨率分子分析系统来模拟特定环境的营养成分。这些体外系统之所以具有吸引力,是因为与动物模型相比,它们的通量更高、调节营养物含量和群落组成的灵活性、扩大培养体积以分离生物分子以及控制环境参数(例如温度、湿度和营养物流)。然而,不同的设备用于研究同质浮游微生物群落和异质生物膜。在这里,我们展示了带有介质轨的微型生物反应器阵列 2 (MBRA-2),这是一种源自 MBRA 系统的台式多反应器系统,使研究人员能够使用同一系统来培养浮游生物和生物膜培养物。我们通过设计和实施可重复使用的介质导轨来取代传统上用于通过恒化器阵列输送介质的分支管,从而简化了系统流程,减少了污染、泄漏和阵列组装所需的时间。此外,我们改变了六个生物反应器条带的结构,加入了一个可拆卸的盖子,以便轻松进入生物反应器孔,从而实现生物膜回收和彻底清洁以供再利用。使用铜绿假单胞菌(一种生物膜产生模型生物体),我们表明 MBRA-2 用于生物膜生长的技术改进不会破坏生物反应器阵列的功能。重要性 带有介质轨的 MBRA-2 为研究人员提供了一个可访问的系统,可以在恒定流量下培养异质悬浮生物膜。
Culture-dependent approaches for investigating microbial ecology aim to model the nutrient content of specific environments by simplifying the system for high-resolution molecular analysis. These in vitro systems are enticing due to their increased throughput compared to animal models, flexibility in modulating nutrient content and community composition, scaling of culture volume to isolate biological molecules, and control of environmental parameters, such as temperature, humidity, and nutrient flow. However, different devices are used to investigate homogenous, planktonic microbial communities and heterogeneous biofilms. Here, we present the minibioreactor array 2 (MBRA-2) with media rails, a benchtop multireactor system derived from the MBRA system that enables researchers to use the same system to grow planktonic and biofilm cultures. We simplified flow through the system and reduced contamination, leakage, and time required for array assembly by designing and implementing a reusable media rail to replace the branched tubing traditionally used to convey media through chemostat arrays. Additionally, we altered the structure of the six-bioreactor strip to incorporate a removable lid to provide easy access to the bioreactor wells, enabling biofilm recovery and thorough cleaning for reuse. Using Pseudomonas aeruginosa, a model biofilm-producing organism, we show that the technical improvements of the MBRA-2 for biofilms growth does not disrupt the function of the bioreactor array. IMPORTANCE The MBRA-2 with media rails provides an accessible system for investigators to culture heterogenous, suspended biofilms under constant flow.
铜绿假单胞菌的毒力因子和抗电力策略以对抗其耐药性。
DOI: 10.3389/fcimb.2022.926758
发表时间: 2022
影响因子: 5.7
作者:
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发表时间: 1995-07-01
期刊: JOURNAL OF APPLIED BACTERIOLOGY
影响因子: --
作者:
HODGSON, AE;NELSON, SM;GILBERT, P
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发表时间: 1981-01-01
影响因子: 2.8
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DOI: 10.1080/19490976.2022.2096993
发表时间: 2022-01
期刊: GUT MICROBES
影响因子: 12.2
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通讯作者: Juncker, David
DOI: 10.1038/nprot.2009.59
发表时间: 2009-01-01
期刊: NATURE PROTOCOLS
影响因子: 14.8
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通讯作者: Stewart, Philip S.