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XB-ART-60213
J Adv Res 2023 Jan 04;55:73-87. doi: 10.1016/j.jare.2023.02.017.
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Single-cell sequencing reveals the evolution of immune molecules across multiple vertebrate species.

Jiao A , Zhang C , Wang X , Sun L , Liu H , Su Y , Lei L , Li W , Ding R , Ding C , Dou M , Tian P , Sun C , Yang X , Zhang L , Zhang B .


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INTRODUCTION: Both innate and adaptive immune system undergo evolution from low to high vertebrates. Due to the limitation of conventional approaches in identifying broader spectrum of immune cells and molecules from various vertebrates, it remains unclear how immune molecules evolve among vertebrates. OBJECTIVES: Here, we utilized carry out comparative transcriptome analysis in various immune cells across seven vertebrate species. METHODS: Single-cell RNA sequencing (scRNA-seq). RESULTS: We uncovered both conserved and species-specific profiling of gene expression in innate and adaptive immunity. Macrophages exhibited highly-diversified genes and developed sophisticated molecular signaling networks along with evolution, indicating effective and versatile functions in higher species. In contrast, B cells conservatively evolved with less differentially-expressed genes in analyzed species. Interestingly, T cells represented a dominant immune cell populations in all species and unique T cell populations were identified in zebrafish and pig. We also revealed compensatory TCR cascade components utilized by different species. Inter-species comparison of core gene programs demonstrated mouse species has the highest similarity in immune transcriptomes to human. CONCLUSIONS: Therefore, our comparative study reveals gene transcription characteristics across multiple vertebrate species during the evolution of immune system, providing insights for species-specific immunity as well as the translation of animal studies to human physiology and disease.

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Species referenced: Xenopus tropicalis

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References [+] :
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