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New model of Chinese tree shrew genome annotation launched

Credit: Chinese Academy of Sciences

A analysis group led by Prof. Yao Yonggang from Kunming Institute of Zoology of the Chinese Academy of Sciences has reported a brand new model of Chinese tree shrew genome annotation, and studied a number of genomic and transcriptomic traits of Chinese tree shrew, together with gene household growth, transcriptomic similarity throughout 4 species, and host immune response in opposition to virus an infection. The examine was printed in Zoological Research.

Prof. Yao’s group has assembled the primary high-quality genome of the Chinese tree shrew (KIZ model 1: TS_1.0) utilizing excessive depth (~79X) short-read sequencing know-how and the primary chromosome-level tree shrew genome (KIZ model 2: TS_2.0) utilizing single-molecule real-time (SMRT) sequencing know-how. In this examine, the group improved the genome annotation of Chinese tree shrew through the use of transcriptome sequencing information of assorted origin.

The researchers collected high-quality RNA-seq datasets of tree shrews from publicly obtainable sources, in addition to two ISO-seq datasets and 139 RNA-seq datasets newly generated on this examine. They obtained a total of 53,298 newly annotated coding transcripts and 115,562 newly annotated non-coding transcripts, and produced a comparatively full and dependable tree shrew genome annotation (KIZ model 3:TS_3.0).

Based on this complete annotation, the researchers explored the spatial expression and various splicing patterns of the tree shrew transcripts and characterised the orthologous relationships amongst tree shrews and different species. They additionally in contrast expression similarity throughout species and located that the species clustering patterns based mostly on expression information from mind, liver, testis, kidney, and coronary heart tissues confirmed distant divergence of mice from primates and tree shrews.

Besides, the researchers recognized 13 pathways together with neuro-related pathways comparable to Parkinson’s illness and Alzheimer’s illness between tree shrews and people which confirmed higher protein sequence identification than these between mice and people. They profiled the expression patterns of 5 pathways associated to the mind and confirmed that tree shrews are nearer to primates than to mice on the transcriptomic stage.

In addition, the researchers profiled the transcriptome patterns of host immune responses to viral an infection utilizing the TS_3.0 genome annotation, and located that newly annotated genes comparable to purine wealthy component binding protein A and tree shrew particular growth STT3 oligosaccharyltransferase advanced catalytic subunit B gene household had been dysregulated upon virus an infection, which can recommend their essential function throughout host immune response.

The improved annotation of tree shrew genome illuminated the distinctive and customary genetic options of tree shrews.

Tree shrews can tolerate hot peppers: Mutation in pain receptor makes peppery plant palatable

More data:
Mao-Sen Ye et al, Comprehensive annotation of the Chinese tree shrew genome by large-scale RNA sequencing and long-read isoform sequencing, Zoological Research (2021). DOI: 10.24272/j.issn.2095-8137.2021.272

New model of Chinese tree shrew genome annotation launched (2021, November 11)
retrieved 12 November 2021
from https://phys.org/news/2021-11-version-chinese-tree-shrew-genome.html

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