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An outlook on fluorescent in situ hybridization coupled to flow cytometry as a versatile technique to evaluate the effects of foods and dietary interventions on gut microbiota

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Abstract

The increasing interest in the effects of the gut microbiota on host health has stimulated the investigation of the composition of this microbial community and the factors affecting these microorganisms. This review discusses the recent advances and progress applications in the use of the fluorescent in situ hybridization (FISH) coupled to flow cytometry (FC) technique (FISH-FC) in studies evaluating the gut microbiota published in the last 10 years, with particular emphasis on the effects of foods and dietary interventions. These studies have shown that FISH-FC technique is capable of detecting and quantifying several groups of bacteria found as part of the gut microbiota. FISH-FC can be considered an effective, versatile, and rapid technique to evaluate alterations in gut microbiota composition caused by different foods as assessed in studies in vitro, in vivo, and in clinical trials. Some specific probes have been most used to represent the general gut microbiota, such as those specific to Lactobacillus spp./Enterococcus spp., Bacteroidaceae/Prevotellaceae, Clostridium histolyticum, and Bifidobacterium spp. FISH-FC technique could have an important opportunity for application in studies with next-generation probiotics belonging to the gut microbiota. Optimizations of FISH-FC protocols could allow more discoveries about the gut microbiota, including the development of new probes targeting microorganisms still not explored, the analysis of individual portions of the intestine, and the proposition of novel quantitative approaches.

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Acknowledgements

Authors thank the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES, Brazil––Finance code 001) for the PhD and MSc. scholarships awarded to K.B. Sampaio and D.S. Nascimento, respectively.

Funding

This study was partially funded by CAPES (Brazil) - Finance code 001.

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Contributions

KBS and ELS did conceptualization. KBS, DNS, and ELS performed data curation, visualization, writing––original draft and formal analysis. EFG and ELS administrated the project and were involved in writing––review and editing; KBS, DNS, EFG, ELS contributed to resources. ELS did supervision.

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Correspondence to Evandro Leite de Souza.

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The authors declare no conflict of interest.

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Communicated by Erko Stackebrandt.

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Sampaio, K.B., dos Santos Nascimento, D., Garcia, E.F. et al. An outlook on fluorescent in situ hybridization coupled to flow cytometry as a versatile technique to evaluate the effects of foods and dietary interventions on gut microbiota. Arch Microbiol 204, 469 (2022). https://doi.org/10.1007/s00203-022-03090-7

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  • DOI: https://doi.org/10.1007/s00203-022-03090-7

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