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Li Z, Duan Y, Yan S, Zhang Y, Wu Y. The miR-302/367 cluster: Aging, inflammation, and cancer. Cell Biochem Funct 2023; 41:752-766. [PMID: 37555645 DOI: 10.1002/cbf.3836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 07/25/2023] [Indexed: 08/10/2023]
Abstract
MicroRNAs (miRNAs) are a class of noncoding RNAs that occupy a significant role in biological processes as important regulators of intracellular homeostasis. First, we will discuss the biological genesis and functions of the miR-302/367 cluster, including miR-302a, miR-302b, miR-302c, miR-302d, and miR-367, as well as their roles in physiologically healthy tissues. The second section of this study reviews the progress of the miR-302/367 cluster in the treatment of cancer, inflammation, and diseases associated with aging. This cluster's aberrant expression in cells and/or tissues exhibits similar or different effects in various diseases through molecular mechanisms such as proliferation, apoptosis, cycling, drug resistance, and invasion. This article also discusses the upstream and downstream regulatory networks of miR-302/367 clusters and their related mechanisms. Particularly because studies on the upstream regulatory molecules of miR-302/367 clusters, which include age-related macular degeneration, myocardial infarction, and cancer, have become more prevalent in recent years. MiR-302/367 cluster can be an important therapeutic target and the use of miRNAs in combination with other molecular markers may improve diagnostic or therapeutic capabilities, providing unique insights and a more dynamic view of various diseases. It is noted that miRNAs can be an important bio-diagnostic target and offer a promising method for illness diagnosis, prevention, and treatment.
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Affiliation(s)
- Zhou Li
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi Province, China
| | - Yan Duan
- Department of Stomatology, Shanxi Provincial People's Hospital, Taiyuan, Shanxi Province, China
| | - Shaofu Yan
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi Province, China
| | - Yao Zhang
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi Province, China
| | - Yunxia Wu
- Shanxi Province Key Laboratory of Oral Diseases Prevention and New Materials, Shanxi Medical University School and Hospital of Stomatology, Taiyuan, Shanxi Province, China
- Department of Stomatology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi Province, China
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2
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Sugawara T, Kawamoto Y, Kawasaki T, Umezawa A, Akutsu H. A single allele of the hsa-miR-302/367 cluster maintains human pluripotent stem cells. Regen Ther 2022; 21:37-45. [PMID: 35702483 PMCID: PMC9162946 DOI: 10.1016/j.reth.2022.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/13/2022] [Accepted: 05/15/2022] [Indexed: 12/03/2022] Open
Abstract
Introduction In a diploid organism, two alleles from a single genetic locus are expressed to generate a normal phenotype. Heterozygous deleterious mutation causes a reduction of functional proteins to a half dose and insufficient amounts of functional proteins can occur to generate an in–normal phenotype, namely haploinsufficiency. Heterozygous deleterious mutation of microRNAs (miRs), non-coding RNAs that regulate the expression level of target transcripts, is still not well understood. The hsa-miR-302/367 cluster is the most abundant and specifically up-regulated miR cluster in human embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs) and plays an important role in the maintenance of pluripotency. Methods We targeted the hsa-miR-302/367 region via a Cas9 nuclease complex with guide RNA and replaced that region with green fluorescent protein (GFP). Using a homologous donor, consisting of left and right arms and GFP, we confirmed deletion of the hsa-miR-302/367 cluster by homologous recombination without cellular destruction by microscopy. We sub-cloned GFP-positive colonies and checked the genotype of each sub-clone by genomic PCR. We then analyzed the pluripotency of heterozygous knockout cells with a hsa-miR-302/367 cluster by assessing cell proliferation ratio, morphology, and undifferentiated marker gene expression. We also used an embryoid body formation assay and transplanted wild-type and heterozygous knockout cells into immune-deficient mice. Furthermore, to analyze the lineage-specific differentiation potential of heterozygous knockout cells, we differentiated both wild-type and heterozygous knockout cells into neural stem cells. Results Here, we show that the half dose of mature miRs from the hsa-miR-302/367 cluster loci was sufficient for the continued self-renewal of hiPSCs. All GFP-positive clones were revealed to be heterozygous knockout cells, suggesting hsa-miR-302/367 cluster homozygous knockout cells were not maintained. The cell proliferation ratio, morphology, and expression of undifferentiated marker genes were comparable between wild-type and heterozygous knockout of undifferentiated human iPSCs. In addition, we found that heterozygous knockout human iPSCs have the capacity to differentiate into three germ layers, including neural stem cells. Conclusions Taken together, a single allele of the hsa-miR-302/367 cluster expresses a sufficient amount of miRs to maintain the pluripotent properties of human stem cells. hsa-miR-302/367 cluster was deleted with CRISPR/Cas9 in human pluripotent stem cells. Homozygous hsa-miR-302/367 knockout cell was not generated.
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Affiliation(s)
| | | | | | | | - Hidenori Akutsu
- Corresponding author. Department of Reproductive Medicine, Center for Regenerative Medicine, National Center for Child Health and Development (NCCHD), Okura 2-10-1, Setagaya, Tokyo, 157-8535, Japan. Tel: +81-3-5494-7047, Fax: +81-3-5494-7048.
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3
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Kawashima S, Yuno A, Sano S, Nakamura A, Ishiwata K, Kawasaki T, Hosomichi K, Nakabayashi K, Akutsu H, Saitsu H, Fukami M, Usui T, Ogata T, Kagami M. Familial Pseudohypoparathyroidism Type IB Associated with an SVA Retrotransposon Insertion in the GNAS Locus. J Bone Miner Res 2022; 37:1850-1859. [PMID: 35859320 DOI: 10.1002/jbmr.4652] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 07/12/2022] [Accepted: 07/16/2022] [Indexed: 11/09/2022]
Abstract
Loss of methylation (LOM) at GNAS-A/B:TSS-differentially methylated regions (DMRs) in the GNAS locus is observed in pseudohypoparathyroidism type 1B (PHP1B). Many PHP1B cases are sporadic, but autosomal dominant-PHP1B has a deletion involving NESP55 expressed from the maternal allele or STX16 located upstream of the GNAS locus on the maternal allele. We report the possible first familial PHP1B cases with retrotransposon insertion in the GNAS locus on the maternal allele. To our knowledge, they are the possible first cases with imprinting disorders caused by retrotransposon insertion. The two sibling cases experienced tetany and/or cramps from school age and had hypocalcemia and an increased serum intact parathyroid hormone (PTH) level together with overweight, round face, and normal intellectual levels. Methylation analysis for DMRs in the GNAS locus showed only LOM of the GNAS-A/B:TSS-DMR. Copy number abnormalities at STX16 and the GNAS locus were not detected by array comparative genomic hybridization. Whole-genome sequencing and Sanger sequencing revealed an approximately 1000-bp SVA retrotransposon insertion upstream of the first exon of A/B on the GNAS locus in these siblings. Whole-genome methylome analysis by Enzymatic Methyl-Seq in the siblings showed normal methylation status in the region surrounding the insertion site and mild LOM of the GNAS-A/B:TSS-DMR. We conducted transcriptome analysis using mRNA from skin fibroblasts and induced pluripotent stem cells (iPSCs) derived from the siblings and detected no aberrant NESP55 transcripts. Quantitative reverse-transcriptase PCR (qRT-PCR) analysis in skin fibroblasts showed increased A/B expression in the patients and no NESP55 expression, even in a control. qRT-PCR analysis in iPSCs showed decreased NESP55 expression with normal methylation status of the GNAS-NESP:TSS-DMR in the patients. The retrotransposon insertion in the siblings likely caused decreased NESP55 expression that could lead to increased A/B expression via LOM of the GNAS-A/B:TSS-DMR, subsequent reduced Gsα expression, and finally, PHP1B development. © 2022 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Sayaka Kawashima
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Pediatrics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Akiko Yuno
- Department of Endocrinology and Metabolism, Kin-ikyo Chuo Hospital, Sapporo, Japan
| | - Shinichiro Sano
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Endocrinology and Metabolism, Shizuoka Children's Hospital, Shizuoka, Japan
| | - Akie Nakamura
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Pediatrics, Hokkaido University School of Medicine, Sapporo, Japan
| | - Keisuke Ishiwata
- Department of Maternal Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Tomoyuki Kawasaki
- Department of Reproductive Medicine, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Kazuyoshi Hosomichi
- Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Kazuhiko Nakabayashi
- Department of Maternal Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hidenori Akutsu
- Department of Reproductive Medicine, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Maki Fukami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Takeshi Usui
- Research Support Center, Shizuoka General Hospital, Shizuoka, Japan.,Shizuoka Graduate University of Public Health, Shizuoka, Japan
| | - Tsutomu Ogata
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan.,Department of Pediatrics, Hamamatsu Medical Center, Hamamatsu, Japan
| | - Masayo Kagami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
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Schaefer M, Nabih A, Spies D, Hermes V, Bodak M, Wischnewski H, Stalder P, Ngondo RP, Liechti LA, Sajic T, Aebersold R, Gatfield D, Ciaudo C. Global and precise identification of functional
miRNA
targets in
mESCs
by integrative analysis. EMBO Rep 2022; 23:e54762. [PMID: 35899551 PMCID: PMC9442311 DOI: 10.15252/embr.202254762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 06/27/2022] [Accepted: 06/30/2022] [Indexed: 12/03/2022] Open
Abstract
MicroRNA (miRNA) loaded Argonaute (AGO) complexes regulate gene expression via direct base pairing with their mRNA targets. Previous works suggest that up to 60% of mammalian transcripts might be subject to miRNA‐mediated regulation, but it remains largely unknown which fraction of these interactions are functional in a specific cellular context. Here, we integrate transcriptome data from a set of miRNA‐depleted mouse embryonic stem cell (mESC) lines with published miRNA interaction predictions and AGO‐binding profiles. Using this integrative approach, combined with molecular validation data, we present evidence that < 10% of expressed genes are functionally and directly regulated by miRNAs in mESCs. In addition, analyses of the stem cell‐specific miR‐290‐295 cluster target genes identify TFAP4 as an important transcription factor for early development. The extensive datasets developed in this study will support the development of improved predictive models for miRNA‐mRNA functional interactions.
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Affiliation(s)
- Moritz Schaefer
- Swiss Federal Institute of Technology Zurich IMHS, Chair of RNAi and Genome Integrity Zurich Switzerland
- Life Science Zurich Graduate School University of Zürich Zurich Switzerland
| | - Amena Nabih
- Swiss Federal Institute of Technology Zurich IMHS, Chair of RNAi and Genome Integrity Zurich Switzerland
- Life Science Zurich Graduate School University of Zürich Zurich Switzerland
| | - Daniel Spies
- Swiss Federal Institute of Technology Zurich IMHS, Chair of RNAi and Genome Integrity Zurich Switzerland
- Life Science Zurich Graduate School University of Zürich Zurich Switzerland
| | - Victoria Hermes
- Swiss Federal Institute of Technology Zurich IMHS, Chair of RNAi and Genome Integrity Zurich Switzerland
| | - Maxime Bodak
- Swiss Federal Institute of Technology Zurich IMHS, Chair of RNAi and Genome Integrity Zurich Switzerland
- Life Science Zurich Graduate School University of Zürich Zurich Switzerland
| | - Harry Wischnewski
- Swiss Federal Institute of Technology Zurich IMHS, Chair of RNAi and Genome Integrity Zurich Switzerland
| | - Patrick Stalder
- Swiss Federal Institute of Technology Zurich IMHS, Chair of RNAi and Genome Integrity Zurich Switzerland
- Life Science Zurich Graduate School University of Zürich Zurich Switzerland
| | - Richard Patryk Ngondo
- Swiss Federal Institute of Technology Zurich IMHS, Chair of RNAi and Genome Integrity Zurich Switzerland
| | - Luz Angelica Liechti
- Center for Integrative Genomics (CIG) University of Lausanne Lausanne Switzerland
| | - Tatjana Sajic
- Swiss Federal Institute of Technology Zurich, IMSB Zürich Switzerland
| | - Ruedi Aebersold
- Swiss Federal Institute of Technology Zurich, IMSB Zürich Switzerland
| | - David Gatfield
- Center for Integrative Genomics (CIG) University of Lausanne Lausanne Switzerland
| | - Constance Ciaudo
- Swiss Federal Institute of Technology Zurich IMHS, Chair of RNAi and Genome Integrity Zurich Switzerland
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Tsuruta S, Kawasaki T, Machida M, Iwatsuki K, Inaba A, Shibata S, Shindo T, Nakabayashi K, Hakamada K, Umezawa A, Akutsu H. Development of Human Gut Organoids With Resident Tissue Macrophages as a Model of Intestinal Immune Responses. Cell Mol Gastroenterol Hepatol 2022; 14:726-729.e5. [PMID: 35760286 PMCID: PMC9421619 DOI: 10.1016/j.jcmgh.2022.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 12/10/2022]
Affiliation(s)
- Satoru Tsuruta
- Center for Regenerative Medicine, National Center for Child Health and Development, Tokyo, Japan; Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Tomoyuki Kawasaki
- Center for Regenerative Medicine, National Center for Child Health and Development, Tokyo, Japan
| | - Masakazu Machida
- Center for Regenerative Medicine, National Center for Child Health and Development, Tokyo, Japan
| | - Ken Iwatsuki
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Akihiko Inaba
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Shinsuke Shibata
- Electron Microscope Laboratory, Keio University School of Medicine, Tokyo, Japan; Division of Microscopic Anatomy, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Tomoko Shindo
- Electron Microscope Laboratory, Keio University School of Medicine, Tokyo, Japan
| | - Kazuhiko Nakabayashi
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Kenichi Hakamada
- Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Akihiro Umezawa
- Center for Regenerative Medicine, National Center for Child Health and Development, Tokyo, Japan
| | - Hidenori Akutsu
- Center for Regenerative Medicine, National Center for Child Health and Development, Tokyo, Japan
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6
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Ghafouri-Fard S, Moghadam MHB, Shoorei H, Bahroudi Z, Taheri M, Taheriazam A. The impact of non-coding RNAs on normal stem cells. Biomed Pharmacother 2021; 142:112050. [PMID: 34426251 DOI: 10.1016/j.biopha.2021.112050] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/02/2021] [Accepted: 08/12/2021] [Indexed: 12/11/2022] Open
Abstract
Self-renewal and differentiation into diverse cells are two main characteristics of stem cells. These cells have important roles in development and homeostasis of different tissues and are supposed to facilitate tissue regeneration. Function of stem cells is regulated by dynamic interactions between external signaling, epigenetic factors, and molecules that regulate expression of genes. Among the highly appreciated regulators of function of stem cells are long non-coding RNAs (lncRNAs) and microRNAs (miRNAs). Impact of miR-342-5p, miR-145, miR-1297, miR-204-5p, miR-132, miR-128-3p, hsa-miR-302, miR-26b-5p and miR-10a are among miRNAs that regulate function of stem cells. Among lncRNAs, AK141205, ANCR, MEG3, Pnky, H19, TINCR, HULC, EPB41L4A-AS1 and SNHG7 have important roles in the regulation of stem cells. In the current paper, we aimed at reviewing the importance of miRNAs and lncRNAs in differentiation of stem cells both in normal and diseased conditions. For this purpose, we searched PubMed/Medline and google scholar databases using "stem cell" AND "lncRNA", or "long non-coding RNA", or "microRNA" or "miRNA".
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Hamed Shoorei
- Department of Anatomical Sciences, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Zahra Bahroudi
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Taheri
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Afshin Taheriazam
- Department of Orthopedics, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran.
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7
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Fu Y, Fan P, Wang L, Shu Z, Zhu S, Feng S, Li X, Qiu X, Zhao S, Liu X. Improvement, identification, and target prediction for miRNAs in the porcine genome by using massive, public high-throughput sequencing data. J Anim Sci 2021; 99:skab018. [PMID: 33493272 PMCID: PMC7885162 DOI: 10.1093/jas/skab018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 01/21/2021] [Indexed: 12/27/2022] Open
Abstract
Despite the broad variety of available microRNA (miRNA) research tools and methods, their application to the identification, annotation, and target prediction of miRNAs in nonmodel organisms is still limited. In this study, we collected nearly all public sRNA-seq data to improve the annotation for known miRNAs and identify novel miRNAs that have not been annotated in pigs (Sus scrofa). We newly annotated 210 mature sequences in known miRNAs and found that 43 of the known miRNA precursors were problematic due to redundant/missing annotations or incorrect sequences. We also predicted 811 novel miRNAs with high confidence, which was twice the current number of known miRNAs for pigs in miRBase. In addition, we proposed a correlation-based strategy to predict target genes for miRNAs by using a large amount of sRNA-seq and RNA-seq data. We found that the correlation-based strategy provided additional evidence of expression compared with traditional target prediction methods. The correlation-based strategy also identified the regulatory pairs that were controlled by nonbinding sites with a particular pattern, which provided abundant complementarity for studying the mechanism of miRNAs that regulate gene expression. In summary, our study improved the annotation of known miRNAs, identified a large number of novel miRNAs, and predicted target genes for all pig miRNAs by using massive public data. This large data-based strategy is also applicable for other nonmodel organisms with incomplete annotation information.
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Affiliation(s)
- Yuhua Fu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education; Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture & College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China
- School of Computer Science and Technology, Wuhan University of Technology, Wuhan, Hubei, PR China
| | - Pengyu Fan
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education; Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture & College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Lu Wang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education; Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture & College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Ziqiang Shu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education; Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture & College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Shilin Zhu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education; Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture & College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Siyuan Feng
- Laboratory of Genetics, University of Wisconsin-Madison, Madison, WI, USA
| | - Xinyun Li
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education; Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture & College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Xiaotian Qiu
- National Animal Husbandry Service, Beijing, PR China
| | - Shuhong Zhao
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education; Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture & College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Xiaolei Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education; Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture & College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, PR China
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