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Lepidopteran insects: emerging model organisms to study infection by enteropathogens

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Abstract

The in vivo analysis of a pathogen is a critical step in gaining greater knowledge of pathogen biology and host–pathogen interactions. In the last two decades, there has been a notable rise in the number of studies on developing insects as a model for studying pathogens, which provides various benefits, such as ethical acceptability, relatively short life cycle, and cost-effective care and maintenance relative to routinely used rodent infection models. Furthermore, lepidopteran insects provide many advantages, such as easy handling and tissue extraction due to their large size relative to other invertebrate models, like Caenorhabditis elegans. Additionally, insects have an innate immune system that is highly analogous to vertebrates. In the present review, we discuss the components of the insect’s larval immune system, which strengthens its usage as an alternative host, and present an updated overview of the research findings involving lepidopteran insects (Galleria mellonella, Manduca sexta, Bombyx mori, and Helicoverpa armigera) as infection models to study the virulence by enteropathogens due to the homology between insect and vertebrate gut.

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  1. Department of Microbiology, Faculty of Allied Health Sciences, SGT University, Gurgaon-Badli Road Chandu, Budhera, Gurugram, 122505, Haryana, India

    Shruti Ahlawat

  2. Laboratory of Enzymology and Recombinant DNA Technology, Department of Microbiology, Maharshi Dayanand University, Rohtak, 124001, Haryana, India

    Krishna Kant Sharma

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Ahlawat, S., Sharma, K.K. Lepidopteran insects: emerging model organisms to study infection by enteropathogens. Folia Microbiol 68, 181–196 (2023). https://doi.org/10.1007/s12223-022-01014-y

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