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From parasites to partners: exploring the intricacies of host-transposon dynamics and coevolution

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Abstract

Transposable elements, often referred to as “jumping genes,” have long been recognized as genomic parasites due to their ability to integrate and disrupt normal gene function and induce extensive genomic alterations, thereby compromising the host's fitness. To counteract this, the host has evolved a plethora of mechanisms to suppress the activity of the transposons. Recent research has unveiled the host-transposon relationships to be nuanced and complex phenomena, resulting in the coevolution of both entities. Transposition increases the mutational rate in the host genome, often triggering physiological pathways such as immune and stress responses. Current gene transfer technologies utilizing transposable elements have potential drawbacks, including off-target integration, induction of mutations, and modifications of cellular machinery, which makes an in-depth understanding of the host-transposon relationship imperative. This review highlights the dynamic interplay between the host and transposable elements, encompassing various factors and components of the cellular machinery. We provide a comprehensive discussion of the strategies employed by transposable elements for their propagation, as well as the mechanisms utilized by the host to mitigate their parasitic effects. Additionally, we present an overview of recent research identifying host proteins that act as facilitators or inhibitors of transposition. We further discuss the evolutionary outcomes resulting from the genetic interactions between the host and the transposable elements. Finally, we pose open questions in this field and suggest potential avenues for future research.

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P.C, R.S, and S.S conceived of the presented idea. P.C and R.S performed a literature survey to gather information. S.S analyzed the data. P.C and R.S wrote the main manuscript with inputs from all the authors. P.C. prepared the figures. S.S provided critical feedback and helped shape the analysis and the manuscript.

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Correspondence to Sugopa Sengupta.

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Chakrabarty, P., Sen, R. & Sengupta, S. From parasites to partners: exploring the intricacies of host-transposon dynamics and coevolution. Funct Integr Genomics 23, 278 (2023). https://doi.org/10.1007/s10142-023-01206-w

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  • DOI: https://doi.org/10.1007/s10142-023-01206-w

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