Multi-species Biofilm
Multi-species Biofilm - Related Videos
07:09
Use of a High-throughput In Vitro Microfluidic System to Develop Oral Multi-species Biofilms
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Cited by 28 •
2014
The goal of this methods paper is to describe the use of a microfluidic system for the development of multi-species biofilms that contain species typically identified in human supragingival dental plaque. Methods to describe biofilm architecture, biofilm viability, and an approach to harvest biofilm for culture-dependent or culture-independent analyses are highlighted.
02:51
Multi-species Conserved Sequences
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2021
Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale studies have provided new insights into the evolutionary relationship between organisms. Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
09:03
Growth of Mycobacterium tuberculosis Biofilms
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Cited by 79 •
2012
Mycobacterium tuberculosis forms drug tolerant biofilms when cultured in certain conditions. Here we describe methods for culturing M. tuberculosis biofilms and determining the frequency of drug tolerant persisters. These protocols will be useful for further studies into the mechanisms of drug tolerance in M. tuberculosis.
03:47
Determination of ROS Production by Neutrophils upon Interaction with Opsonized Biofilm
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2025
In this video, we demonstrate an in vitro chemiluminescence assay to detect the generation of reactive oxygen species by neutrophils upon exposure to an opsonized bacterial biofilm.
03:06
An In Vitro Assay to Study the Interaction between Neutrophils and Biofilm
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2025
This video demonstrates an in vitro assay to study neutrophil-biofilm interaction. The pathogenic bacteria embedded in the biofilm and isolated neutrophils were tagged using fluorescent labels, and the immune response by the neutrophils and the evasion of the immune response by the bacteria were assessed using a fluorescence microscope.
FAQs
Species influence one another through exchanged metabolites and chemical signals. One population can provide compounds that alter another population’s growth, while competition for nutrients can limit neighboring cells. These interactions occur within the shared matrix and are shaped by local oxygen, nutrient, and waste concentrations, producing a community in which cooperation and competition operate simultaneously.
Oxygen, nutrients, and waste do not distribute evenly throughout the community. Their concentration gradients create distinct microenvironments, so cells positioned in different regions experience different growth conditions. These local differences help determine which species grow, cooperate, or compete, making the biofilm a spatially organized community rather than a uniform collection of microbial cells.
The self-produced extracellular polymeric substance matrix provides the surrounding framework in which cells remain organized and interact. Its presence contributes to community persistence and is associated with increased tolerance to antimicrobial treatments in multi-species communities. Consequently, the matrix is important when examining why biofilm-associated microbes can remain established despite antimicrobial exposure.
They provide a model for examining how different microorganisms interact within a structured environment. Instead of studying growth as an isolated activity, biology can assess metabolite exchange, chemical signaling, spatial microenvironments, cooperation, and competition together. This perspective connects cellular behavior with broader questions about microbial ecology and community persistence.
Research on these communities can reveal how species interactions shape growth, persistence, and responses to antimicrobial treatments. It also helps connect local processes, such as metabolite exchange and chemical signaling, with larger outcomes in natural habitats, industrial systems, and clinical settings. These findings support efforts to understand and control biofilm-associated disease.
Clinical biofilms can contain interacting microbial species whose shared matrix, chemical signaling, and local concentration gradients influence community behavior. Interactions among species may increase persistence and tolerance to antimicrobial treatments, helping explain why biofilm-associated disease can be difficult to control. Studying these relationships provides biological context for developing strategies against chronic infections.
Multi-species biofilms occur in natural habitats and industrial systems, including wastewater processes. Their study helps explain how microbial communities function when species exchange metabolites, respond to chemical signals, and occupy different microenvironments. This knowledge is relevant to understanding wastewater biology, industrial biofilm behavior, and approaches for controlling unwanted microbial communities.