Large Fragment InDels Reshape Genome Structure of Porcine Alveolar Macrophage 3D4/21 Cells

The porcine monomyeloid cell line, or 3D4/21 cells, is an effective tool to study the immune characteristics and virus infection mechanism of pigs. Due to the introduction of the neomycin resistance gene and the SV40 large T antigen gene, its genome has undergone essential changes, which are still u...

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Main Authors: Xiaolong Li, Xiaoqian Zhang, Yandong Luo, Ru Liu, Yan Sun, Shuhong Zhao, Mei Yu, Jianhua Cao
Format: Article
Language:English
Published: MDPI AG 2022-08-01
Series:Genes
Subjects:
Online Access:https://www.mdpi.com/2073-4425/13/9/1515
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author Xiaolong Li
Xiaoqian Zhang
Yandong Luo
Ru Liu
Yan Sun
Shuhong Zhao
Mei Yu
Jianhua Cao
author_facet Xiaolong Li
Xiaoqian Zhang
Yandong Luo
Ru Liu
Yan Sun
Shuhong Zhao
Mei Yu
Jianhua Cao
author_sort Xiaolong Li
collection DOAJ
description The porcine monomyeloid cell line, or 3D4/21 cells, is an effective tool to study the immune characteristics and virus infection mechanism of pigs. Due to the introduction of the neomycin resistance gene and the SV40 large T antigen gene, its genome has undergone essential changes, which are still unknown. Studying the variation in genome structure, especially the large fragments of insertions and deletions (InDels), is one of the proper ways to reveal these issues. In this study, an All-seq method was established by combining Mate-pair and Shotgun sequencing methods, and the detection and verification of large fragments of InDels were performed on 3D4/21 cells. The results showed that there were 844 InDels with a length of more than 1 kb, of which 12 regions were deletions of more than 100 kb in the 3D4/21 cell genome. In addition, compared with porcine primary alveolar macrophages, 82 genes including the <i>CD163</i> had lost transcription in 3D4/21 cells, and 72 genes gained transcription as well. Further referring to the Hi-C structure, it was found that the fusion of the topologically associated domains (TADs) caused by the deletion may lead to abnormal gene function. The results of this study provide a basis for elaborating the genome structure and functional variation in 3D4/21 cells, provide a method for rapid and convenient detection of large-scale InDels, and provide useful clues for the study of the porcine immune function genome and the molecular mechanism of virus infection.
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spelling doaj.art-d3dbcf5a41964fb7a76e42a526f9763e2023-11-23T16:23:21ZengMDPI AGGenes2073-44252022-08-01139151510.3390/genes13091515Large Fragment InDels Reshape Genome Structure of Porcine Alveolar Macrophage 3D4/21 CellsXiaolong Li0Xiaoqian Zhang1Yandong Luo2Ru Liu3Yan Sun4Shuhong Zhao5Mei Yu6Jianhua Cao7Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, ChinaKey Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, ChinaKey Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, ChinaKey Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, ChinaKey Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, ChinaKey Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, ChinaKey Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, ChinaKey Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, ChinaThe porcine monomyeloid cell line, or 3D4/21 cells, is an effective tool to study the immune characteristics and virus infection mechanism of pigs. Due to the introduction of the neomycin resistance gene and the SV40 large T antigen gene, its genome has undergone essential changes, which are still unknown. Studying the variation in genome structure, especially the large fragments of insertions and deletions (InDels), is one of the proper ways to reveal these issues. In this study, an All-seq method was established by combining Mate-pair and Shotgun sequencing methods, and the detection and verification of large fragments of InDels were performed on 3D4/21 cells. The results showed that there were 844 InDels with a length of more than 1 kb, of which 12 regions were deletions of more than 100 kb in the 3D4/21 cell genome. In addition, compared with porcine primary alveolar macrophages, 82 genes including the <i>CD163</i> had lost transcription in 3D4/21 cells, and 72 genes gained transcription as well. Further referring to the Hi-C structure, it was found that the fusion of the topologically associated domains (TADs) caused by the deletion may lead to abnormal gene function. The results of this study provide a basis for elaborating the genome structure and functional variation in 3D4/21 cells, provide a method for rapid and convenient detection of large-scale InDels, and provide useful clues for the study of the porcine immune function genome and the molecular mechanism of virus infection.https://www.mdpi.com/2073-4425/13/9/15153D4/21 cellstructure variationInDelsalveolar macrophagespig
spellingShingle Xiaolong Li
Xiaoqian Zhang
Yandong Luo
Ru Liu
Yan Sun
Shuhong Zhao
Mei Yu
Jianhua Cao
Large Fragment InDels Reshape Genome Structure of Porcine Alveolar Macrophage 3D4/21 Cells
Genes
3D4/21 cell
structure variation
InDels
alveolar macrophages
pig
title Large Fragment InDels Reshape Genome Structure of Porcine Alveolar Macrophage 3D4/21 Cells
title_full Large Fragment InDels Reshape Genome Structure of Porcine Alveolar Macrophage 3D4/21 Cells
title_fullStr Large Fragment InDels Reshape Genome Structure of Porcine Alveolar Macrophage 3D4/21 Cells
title_full_unstemmed Large Fragment InDels Reshape Genome Structure of Porcine Alveolar Macrophage 3D4/21 Cells
title_short Large Fragment InDels Reshape Genome Structure of Porcine Alveolar Macrophage 3D4/21 Cells
title_sort large fragment indels reshape genome structure of porcine alveolar macrophage 3d4 21 cells
topic 3D4/21 cell
structure variation
InDels
alveolar macrophages
pig
url https://www.mdpi.com/2073-4425/13/9/1515
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