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Feng B, Wang X, Qiu D, Sun H, Deng J, Tan Y, Ji K, Xu S, Zhang S, Tang C. DDX18 Facilitates the Tumorigenesis of Lung Adenocarcinoma by Promoting Cell Cycle Progression through the Upregulation of CDK4. Int J Mol Sci 2024; 25:4953. [PMID: 38732173 PMCID: PMC11084921 DOI: 10.3390/ijms25094953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024] Open
Abstract
Lung adenocarcinoma (LUAD) is the most prevalent and aggressive subtype of lung cancer, exhibiting a dismal prognosis with a five-year survival rate below 5%. DEAD-box RNA helicase 18 (DDX18, gene symbol DDX18), a crucial regulator of RNA metabolism, has been implicated in various cellular processes, including cell cycle control and tumorigenesis. However, its role in LUAD pathogenesis remains elusive. This study demonstrates the significant upregulation of DDX18 in LUAD tissues and its association with poor patient survival (from public databases). Functional in vivo and in vitro assays revealed that DDX18 knockdown potently suppresses LUAD progression. RNA sequencing and chromatin immunoprecipitation experiments identified cyclin-dependent kinase 4 (CDK4), a cell cycle regulator, as a direct transcriptional target of DDX18. Notably, DDX18 depletion induced G1 cell cycle arrest, while its overexpression promoted cell cycle progression even in normal lung cells. Interestingly, while the oncogenic protein c-Myc bound to the DDX18 promoter, it did not influence its expression. Collectively, these findings establish DDX18 as a potential oncogene in LUAD, functioning through the CDK4-mediated cell cycle pathway. DDX18 may represent a promising therapeutic target for LUAD intervention.
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Affiliation(s)
- Bingbing Feng
- Department of Thoracic Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhong Shan Er Lu, Guangzhou 510080, China
| | - Xinying Wang
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhong Shan Er Lu, Guangzhou 510080, China
| | - Ding Qiu
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhong Shan Er Lu, Guangzhou 510080, China
| | - Haiyang Sun
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhong Shan Er Lu, Guangzhou 510080, China
| | - Jianping Deng
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhong Shan Er Lu, Guangzhou 510080, China
| | - Ying Tan
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhong Shan Er Lu, Guangzhou 510080, China
| | - Kaile Ji
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhong Shan Er Lu, Guangzhou 510080, China
| | - Shaoting Xu
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhong Shan Er Lu, Guangzhou 510080, China
| | - Shuishen Zhang
- Department of Thoracic Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Ce Tang
- Department of Thoracic Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhong Shan Er Lu, Guangzhou 510080, China
- Animal Experiment Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
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2
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Qiu D, Xu S, Ji K, Tang C. Myeloid Cell-Derived IL-1 Signaling Damps Neuregulin-1 from Fibroblasts to Suppress Colitis-Induced Early Repair of the Intestinal Epithelium. Int J Mol Sci 2024; 25:4469. [PMID: 38674054 PMCID: PMC11050633 DOI: 10.3390/ijms25084469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
Neuregulin-1 (Nrg1, gene symbol: Nrg1), a ligand of the ErbB receptor family, promotes intestinal epithelial cell proliferation and repair. However, the dynamics and accurate derivation of Nrg1 expression during colitis remain unclear. By analyzing the public single-cell RNA-sequencing datasets and employing a dextran sulfate sodium (DSS)-induced colitis model, we investigated the cell source of Nrg1 expression and its potential regulator in the process of epithelial healing. Nrg1 was majorly expressed in stem-like fibroblasts arising early in mouse colon after DSS administration, and Nrg1-Erbb3 signaling was identified as a potential mediator of interaction between stem-like fibroblasts and colonic epithelial cells. During the ongoing colitis phase, a significant infiltration of macrophages and neutrophils secreting IL-1β emerged, accompanied by the rise in stem-like fibroblasts that co-expressed Nrg1 and IL-1 receptor 1. By stimulating intestinal or lung fibroblasts with IL-1β in the context of inflammation, we observed a downregulation of Nrg1 expression. Patients with inflammatory bowel disease also exhibited an increase in NRG1+IL1R1+ fibroblasts and an interaction of NRG1-ERBB between IL1R1+ fibroblasts and colonic epithelial cells. This study reveals a novel potential mechanism for mucosal healing after inflammation-induced epithelial injury, in which inflammatory myeloid cell-derived IL-1β suppresses the early regeneration of intestinal tissue by interfering with the secretion of reparative neuregulin-1 by stem-like fibroblasts.
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Affiliation(s)
- Ding Qiu
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, Guangzhou 510080, China;
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (K.J.)
| | - Shaoting Xu
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (K.J.)
| | - Kaile Ji
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (K.J.)
| | - Ce Tang
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, Guangzhou 510080, China;
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China; (S.X.); (K.J.)
- Animal Experiment Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
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3
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Zhao K, Li Z, Ke Y, Ren R, Cao Z, Li Z, Wang K, Wang X, Wang J, Ma Q, Cao D, Zhao K, Li Y, Hu S, Qiu D, Gong F, Ma X, Zhang X, Fan G, Liang Z, Yin D. Dynamic N 6 -methyladenosine RNA modification regulates peanut resistance to bacterial wilt. New Phytol 2024; 242:231-246. [PMID: 38326943 DOI: 10.1111/nph.19568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 01/17/2024] [Indexed: 02/09/2024]
Abstract
N6 -methyladenosine (m6 A) is the most abundant mRNA modification in eukaryotes and is an important regulator of gene expression as well as many other critical biological processes. However, the characteristics and functions of m6 A in peanut (Arachis hypogea L.) resistance to bacterial wilt (BW) remain unknown. Here, we analyzed the dynamic of m6 A during infection of resistant (H108) and susceptible (H107) peanut accessions with Ralstonia solanacearum (R. solanacearum), the causative agent of BW. Throughout the transcriptome, we identified 'URUAY' as a highly conserved motif for m6 A in peanut. The majority of differential m6 A located within the 3' untranslated region (UTR) of the transcript, with fewer in the exons. Integrative analysis of RNA-Seq and m6 A methylomes suggests the correlation between m6 A and gene expression in peanut R. solanacearum infection, and functional analysis reveals that m6 A-associated genes were related to plant-pathogen interaction. Our experimental analysis suggests that AhALKBH15 is an m6 A demethylase in peanut, leading to decreased m6 A levels and upregulation of the resistance gene AhCQ2G6Y. The upregulation of AhCQ2G6Y expression appears to promote BW resistance in the H108 accession.
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Affiliation(s)
- Kai Zhao
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Zhongfeng Li
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yunzhuo Ke
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Rui Ren
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Zenghui Cao
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Zhan Li
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Kuopeng Wang
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Xiaoxuan Wang
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Jinzhi Wang
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Qian Ma
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Di Cao
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Kunkun Zhao
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Yaoyao Li
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Sasa Hu
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Ding Qiu
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Fangping Gong
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Xingli Ma
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Xingguo Zhang
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
| | - Guoqiang Fan
- College of Forestry, Henan Agricultural University, Zhengzhou, 450046, China
| | - Zhe Liang
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Dongmei Yin
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural University, Zhengzhou, 450046, China
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4
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Xue H, Zhao K, Zhao K, Han S, Chitikineni A, Zhang L, Qiu D, Ren R, Gong F, Li Z, Ma X, Zhang X, Varshney RK, Zhang X, Wei C, Yin D. A near complete genome of Arachis monticola, an allotetraploid wild peanut. Plant Biotechnol J 2024. [PMID: 38436521 DOI: 10.1111/pbi.14331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/21/2024] [Accepted: 02/25/2024] [Indexed: 03/05/2024]
Affiliation(s)
- Hongzhang Xue
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Kai Zhao
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Kunkun Zhao
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Suoyi Han
- The Shennong Laboratory, Zhengzhou, Henan, China
| | | | - Lin Zhang
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Ding Qiu
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Rui Ren
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Fangping Gong
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Zhongfeng Li
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Xingli Ma
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Xingguo Zhang
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | | | - Xinyou Zhang
- The Shennong Laboratory, Zhengzhou, Henan, China
| | - Chaochun Wei
- School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Dongmei Yin
- College of Agronomy, Henan Agricultural University, Zhengzhou, China
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5
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Cao D, Ma Y, Cao Z, Hu S, Li Z, Li Y, Wang K, Wang X, Wang J, Zhao K, Zhao K, Qiu D, Li Z, Ren R, Ma X, Zhang X, Gong F, Jung MY, Yin D. Coordinated Lipid Mobilization during Seed Development and Germination in Peanut ( Arachis hypogaea L.). J Agric Food Chem 2024; 72:3218-3230. [PMID: 38157443 PMCID: PMC10870768 DOI: 10.1021/acs.jafc.3c06697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 12/15/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
Peanut (Arachis hypogaea L.) is one of the most important oil crops in the world due to its lipid-rich seeds. Lipid accumulation and degradation play crucial roles in peanut seed maturation and seedling establishment, respectively. Here, we utilized lipidomics and transcriptomics to comprehensively identify lipids and the associated functional genes that are important in the development and germination processes of a large-seed peanut variety. A total of 332 lipids were identified; triacylglycerols (TAGs) and diacylglycerols were the most abundant during seed maturation, constituting 70.43 and 16.11%, respectively, of the total lipids. Significant alterations in lipid profiles were observed throughout seed maturation and germination. Notably, TAG (18:1/18:1/18:2) and (18:1/18:2/18:2) peaked at 23386.63 and 23392.43 nmol/g, respectively, at the final stage of seed development. Levels of hydroxylated TAGs (HO-TAGs) increased significantly during the initial stage of germination. Accumulation patterns revealed an inverse relationship between free fatty acids and TAGs. Lipid degradation was determined to be regulated by diacylglycerol acyltransferase, triacylglycerol lipase, and associated transcription factors, predominantly yielding oleic acid, linoleic acid, and linolenic acid. Collectively, the results of this study provide valuable insights into lipid dynamics during the development and germination of large-seed peanuts, gene resources, and guiding future research into lipid accumulation in an economically important crop.
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Affiliation(s)
- Di Cao
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Yongzhe Ma
- College
of Food Science, Woosuk University, Samrea-Up, Wanju-Kun, Jeonbuk Province 55338, Republic of Korea
| | - Zenghui Cao
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Sasa Hu
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Zhan Li
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Yanzhe Li
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Kuopeng Wang
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Xiaoxuan Wang
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Jinzhi Wang
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Kunkun Zhao
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Kai Zhao
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Ding Qiu
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Zhongfeng Li
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Rui Ren
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Xingli Ma
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Xingguo Zhang
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Fangping Gong
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
| | - Mun Yhung Jung
- College
of Food Science, Woosuk University, Samrea-Up, Wanju-Kun, Jeonbuk Province 55338, Republic of Korea
| | - Dongmei Yin
- College
of Agronomy & Peanut Functional Genome and Molecular Breeding
Engineering, Henan Agricultural University, Zhengzhou 450000, People’s Republic of China
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Li Z, Cao Z, Ma X, Cao D, Zhao K, Zhao K, Ma Q, Gong F, Li Z, Qiu D, Zhang X, Liu H, Ren R, Yin D. Natural resistance-associated macrophage proteins are involved in tolerance to heavy metal Cd 2+ toxicity and resistance to bacterial wilt of peanut (Arachis hypogaea L.). Plant Physiol Biochem 2024; 207:108411. [PMID: 38309181 DOI: 10.1016/j.plaphy.2024.108411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/15/2024] [Accepted: 01/30/2024] [Indexed: 02/05/2024]
Abstract
Peanut (Arachis hypogaea L.) is one of the most important oil and industrial crops. However, heavy-metal pollution and frequent soil diseases, poses a significant threat to the production of green and healthy peanuts. Herein, we investigated the effects of heavy metal Cd2+ toxicity to the peanuts, and screened out two peanut cultivars H108 and YZ 9102 with higher Cd2+-tolerance. RNA-seq revealed that Natural resistance-associated macrophage proteins (NRAMP)-like genes were involved in the Cd2+ stress tolerance in H108. Genome-wide identification revealed that 28, 13 and 9 Nramp-like genes existing in the A. hypogaea, A. duranensis and A. ipaensis, respectively. The 50 peanut NRAMP genes share conserved architectural characters, and they were classified into two groups. Expressions of AhNramps, particularly AhNramp4, AhNramp12, AhNramp19, and AhNramp25 could be greatly induced by not only cadmium toxicity, but also copper and zinc stresses. The expression profiles of AhNramp14, AhNramp16 and AhNramp25 showed significant differences in the H108 (resistance) and H107 (susceptible) under the infection of bacterial wilt. In addition, we found that the expression profiles of AhNramp14, AhNramp16, and AhNramp25 were greatly up- or down-regulated by the application of exogenous salicylic acid, methyl jasmonate, and abscisic acid. The AhNramp25, of which expression was affected by both heavy metal toxicity and bacterial wilt infection, were selected as strong candidate genes for peanut stress breeding. Our findings will provide an additional information required for further analysis of AhNramps involved in tolerance to heavy metal toxicity and resistance to bacterial wilt of peanut.
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Affiliation(s)
- Zhan Li
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Zenghui Cao
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Xingli Ma
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Di Cao
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Kunkun Zhao
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Kai Zhao
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Qian Ma
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Fangping Gong
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Zhongfeng Li
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Ding Qiu
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Xingguo Zhang
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Haitao Liu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450046, Henan, China
| | - Rui Ren
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China.
| | - Dongmei Yin
- College of Agronomy & Center for Crop Genome Engineering, Henan Agricultural University, Zhengzhou, 450046, Henan, China.
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7
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Zhao K, Wang L, Qiu D, Cao Z, Wang K, Li Z, Wang X, Wang J, Ma Q, Cao D, Qi Y, Zhao K, Gong F, Li Z, Ren R, Ma X, Zhang X, Yu F, Yin D. PSW1, an LRR receptor kinase, regulates pod size in peanut. Plant Biotechnol J 2023; 21:2113-2124. [PMID: 37431286 PMCID: PMC10502750 DOI: 10.1111/pbi.14117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/30/2023] [Accepted: 06/15/2023] [Indexed: 07/12/2023]
Abstract
Pod size is a key agronomic trait that greatly determines peanut yield, the regulatory genes and molecular mechanisms that controlling peanut pod size are still unclear. Here, we used quantitative trait locus analysis to identify a peanut pod size regulator, POD SIZE/WEIGHT1 (PSW1), and characterized the associated gene and protein. PSW1 encoded leucine-rich repeat receptor-like kinase (LRR-RLK) and positively regulated pod stemness. Mechanistically, this allele harbouring a 12-bp insertion in the promoter and a point mutation in the coding region of PSW1 causing a serine-to-isoleucine (S618I) substitution substantially increased mRNA abundance and the binding affinity of PSW1 for BRASSINOSTEROID INSENSITIVE1-ASSOCIATED RECEPTOR KINASE 1 (BAK1). Notably, PSW1HapII (super-large pod allele of PSW1) expression led to up-regulation of a positive regulator of pod stemness PLETHORA 1 (PLT1), thereby resulting in larger pod size. Moreover, overexpression of PSW1HapII increased seed/fruit size in multiple plant species. Our work thus discovers a conserved function of PSW1 that controls pod size and provides a valuable genetic resource for breeding high-yield crops.
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Affiliation(s)
- Kunkun Zhao
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Long Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan Key Laboratory of Plant Functional Genomics and Developmental RegulationHunan UniversityChangshaChina
| | - Ding Qiu
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Zenghui Cao
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Kuopeng Wang
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Zhan Li
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Xiaoxuan Wang
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Jinzhi Wang
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Qian Ma
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Di Cao
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Yinyao Qi
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan Key Laboratory of Plant Functional Genomics and Developmental RegulationHunan UniversityChangshaChina
| | - Kai Zhao
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Fangping Gong
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Zhongfeng Li
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Rui Ren
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Xingli Ma
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Xingguo Zhang
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
| | - Feng Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, Hunan Key Laboratory of Plant Functional Genomics and Developmental RegulationHunan UniversityChangshaChina
| | - Dongmei Yin
- College of Agronomy & Peanut Functional Genome and Molecular Breeding Engineering, Henan Agricultural UniversityZhengzhouChina
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8
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Zhang P, Ohshima S, Zhao H, Kobayashi S, Kado S, Minami T, Kin F, Miyashita A, Iwata A, Kondo Y, Qiu D, Wang C, Luo M, Konoshima S, Inagaki S, Okada H, Mizuuchi T, Nagasaki K. Characterization of a retroreflector array for 320-GHz interferometer system in Heliotron J. Rev Sci Instrum 2023; 94:093501. [PMID: 37671952 DOI: 10.1063/5.0162649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/16/2023] [Indexed: 09/07/2023]
Abstract
A retroreflector array, composed of a cluster of small retroreflectors, is experimentally studied for application to a Michelson-type interferometer system in the fusion plasma experiment. Such a new-type reflector has the potential to be a vital and effective tool at a spatially limited location, such as on the vacuum chamber wall of plasma experimental devices. To investigate the effect of retroreflector array on the reflected beam properties, a tabletop experiment is performed with the retroreflector array composed of 4 mm corner-cube retroreflectors and with a 320-GHz (λ ∼ 0.937 mm) submillimeter wave source. An imaging camera is utilized to measure the submillimeter wave beam profile and is scanned perpendicularly to the beam propagation direction if necessary. The experimental result exhibits a diffraction effect on the reflected beam, resulting in the emergence of discrete peaks on the reflected beam profile, as predicted in the past numerical study; however, the most reflected beam power converges on the one reflected into the incident direction, resulting from a property as a retroreflector. Furthermore, the dependence of the reflected beam on the incident beam angle is characterized while fixing the detector position, and the retroreflection beam intensity is found to vary due to the diffraction effect. Such an undesired variation of beam intensity induced by the diffraction can be suppressed with a focusing lens placed in front of the detector in the practical application to an interferometer.
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Affiliation(s)
- P Zhang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Zhao
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - F Kin
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Miyashita
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Iwata
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Y Kondo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - D Qiu
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Wang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - M Luo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Inagaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
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9
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Li Z, Liu Q, Zhao K, Cao D, Cao Z, Zhao K, Ma Q, Zhai G, Hu S, Li Z, Wang K, Gong F, Ma X, Zhang X, Ren R, Qiu D, Zhao Y, Yin D. Dynamic DNA methylation modification in peanut seed development. iScience 2023; 26:107062. [PMID: 37534185 PMCID: PMC10391728 DOI: 10.1016/j.isci.2023.107062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/21/2023] [Accepted: 06/02/2023] [Indexed: 08/04/2023] Open
Abstract
Cytosine methylation is an important epigenetic modification involved in regulation of plant development. However, the epigenetic mechanisms governing peanut seed development remain unclear. Herein, we generated DNA methylation profiles of developmental seeds of peanut H2014 and its smaller seed mutant H1314 at 15 and 60 days after pegging (DAP, S1, S4). Accompanying seed development, globally elevated methylation was observed in both lines. The mutant had a higher methylation level of 31.1% than wild type at S4, and 27.1-35.9% of the differentially methylated regions (DMRs) between the two lines were distributed in promoter or genic regions at both stages. Integrated methylome and transcriptome analysis revealed important methylation variations closely associated with seed development. Furthermore, some genes showed significantly negative correlation of expression with the methylation level within promoter or gene body. The results provide insights into the roles of DNA methylation in peanut seed development.
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Affiliation(s)
- Zhongfeng Li
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Qian Liu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Kai Zhao
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Di Cao
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Zenghui Cao
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Kunkun Zhao
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Qian Ma
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Gaidan Zhai
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Sasa Hu
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Zhan Li
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Kuopeng Wang
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Fangping Gong
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Xingli Ma
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Xingguo Zhang
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Rui Ren
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Ding Qiu
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
| | - Yu Zhao
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
| | - Dongmei Yin
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, Henan Province, China
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10
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Tang C, Sun H, Kadoki M, Han W, Ye X, Makusheva Y, Deng J, Feng B, Qiu D, Tan Y, Wang X, Guo Z, Huang C, Peng S, Chen M, Adachi Y, Ohno N, Trombetta S, Iwakura Y. Blocking Dectin-1 prevents colorectal tumorigenesis by suppressing prostaglandin E2 production in myeloid-derived suppressor cells and enhancing IL-22 binding protein expression. Nat Commun 2023; 14:1493. [PMID: 36932082 PMCID: PMC10023663 DOI: 10.1038/s41467-023-37229-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 03/07/2023] [Indexed: 03/19/2023] Open
Abstract
Dectin-1 (gene Clec7a), a receptor for β-glucans, plays important roles in the host defense against fungi and immune homeostasis of the intestine. Although this molecule is also suggested to be involved in the regulation of tumorigenesis, the role in intestinal tumor development remains to be elucidated. In this study, we find that azoxymethane-dextran-sodium-sulfate-induced and ApcMin-induced intestinal tumorigenesis are suppressed in Clec7a-/- mice independently from commensal microbiota. Dectin-1 is preferentially expressed on myeloid-derived suppressor cells (MDSCs). In the Clec7a-/- mouse colon, the proportion of MDSCs and MDSC-derived prostaglandin E2 (PGE2) levels are reduced, while the expression of IL-22 binding protein (IL-22BP; gene Il22ra2) is upregulated. Dectin-1 signaling induces PGE2-synthesizing enzymes and PGE2 suppresses Il22ra2 expression in vitro and in vivo. Administration of short chain β-glucan laminarin, an antagonist of Dectin-1, suppresses the development of mouse colorectal tumors. Furthermore, in patients with colorectal cancer (CRC), the expression of CLEC7A is also observed in MDSCs and correlated with the death rate and tumor severity. Dectin-1 signaling upregulates PGE2-synthesizing enzyme expression and PGE2 suppresses IL22RA2 expression in human CRC-infiltrating cells. These observations indicate a role of the Dectin-1-PGE2-IL-22BP axis in regulating intestinal tumorigenesis, suggesting Dectin-1 as a potential target for CRC therapy.
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Affiliation(s)
- Ce Tang
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China.
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China.
- Center for Animal Disease Models, Research Institute for Biomedical Sciences, Tokyo University of Science, Yamazaki 2669, Noda-shi, Chiba, 278-0022, Japan.
| | - Haiyang Sun
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
- Center for Animal Disease Models, Research Institute for Biomedical Sciences, Tokyo University of Science, Yamazaki 2669, Noda-shi, Chiba, 278-0022, Japan
| | - Motohiko Kadoki
- Center for Animal Disease Models, Research Institute for Biomedical Sciences, Tokyo University of Science, Yamazaki 2669, Noda-shi, Chiba, 278-0022, Japan
| | - Wei Han
- Center for Animal Disease Models, Research Institute for Biomedical Sciences, Tokyo University of Science, Yamazaki 2669, Noda-shi, Chiba, 278-0022, Japan
| | - Xiaoqi Ye
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
- Center for Animal Disease Models, Research Institute for Biomedical Sciences, Tokyo University of Science, Yamazaki 2669, Noda-shi, Chiba, 278-0022, Japan
| | - Yulia Makusheva
- Center for Animal Disease Models, Research Institute for Biomedical Sciences, Tokyo University of Science, Yamazaki 2669, Noda-shi, Chiba, 278-0022, Japan
| | - Jianping Deng
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
| | - Bingbing Feng
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
| | - Ding Qiu
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
| | - Ying Tan
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
| | - Xinying Wang
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
| | - Zehao Guo
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
| | - Chanyan Huang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
| | - Sui Peng
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
| | - Minhu Chen
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhong Shan Er Lu, 510080, Guangzhou, Guangdong Province, China
| | - Yoshiyuki Adachi
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, 192-0392, Japan
| | - Naohito Ohno
- Laboratory for Immunopharmacology of Microbial Products, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, 192-0392, Japan
| | - Sergio Trombetta
- Boehringer Ingelheim USA, 900 Ridgebury Rd, Ridgefield, CT, 06877, USA
| | - Yoichiro Iwakura
- Center for Animal Disease Models, Research Institute for Biomedical Sciences, Tokyo University of Science, Yamazaki 2669, Noda-shi, Chiba, 278-0022, Japan.
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11
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Zhang P, Ohshima S, Zhao H, Deng C, Kobayashi S, Kado S, Minami T, Matoike R, Miyashita A, Iwata A, Kondo Y, Qiu D, Wang C, Luo M, Konoshima S, Inagaki S, Okada H, Mizuuchi T, Nagasaki K. Development and initial results of 320 GHz interferometer system in Heliotron J. Rev Sci Instrum 2022; 93:113519. [PMID: 36461432 DOI: 10.1063/5.0101808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 10/02/2022] [Indexed: 06/17/2023]
Abstract
A new 320 GHz solid-state source interferometer is installed in the Heliotron J helical device to explore the physics of high-density plasmas (ne > 2-3 × 1019 m-3, typically) realized with advanced fueling techniques. This interferometry system is of the Michelson type and is based on the heterodyne principle, with two independent solid-state sources that can deliver an output power of up to 50 mW. A high time resolution measurement of <1 µs can be derived by tuning the frequency of one source in the frequency range of 312-324 GHz on the new system, which can realize the fluctuation measurement. We successfully measured the line-averaged electron density in high-density plasma experiments. The measured density agreed well with a microwave interferometer measurement using a different viewing chord, demonstrating that the new system can be used for routine diagnostics of electron density in Heliotron J.
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Affiliation(s)
- P Zhang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Ohshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Zhao
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Deng
- University of California, Los Angeles, California 90095-1594, USA
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Kado
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Minami
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - R Matoike
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Miyashita
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - A Iwata
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Y Kondo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - D Qiu
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - C Wang
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - M Luo
- Graduate School of Energy Science, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - S Inagaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - H Okada
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan
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12
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Abstract
Emerging evidence suggests that growth factors are crucial in regenerative endodontic therapy. To achieve the desired effects, the systematic administration of supraphysiologic concentrations of exogenous growth factors is commonly performed, but this is usually associated with high costs, technique, and safety issues. Here, we describe a novel biomaterial that can manipulate endogenous growth factors without the need for adding exogenous growth factors. Transforming growth factor β1 binding peptide (TGFp) was grafted onto the surface of a neutral pH phytic acid-derived bioactive glass (PSC) to synthesize modified bioactive glass (PSC-TGFp). Fourier transform infrared spectroscopy and thermogravimetric analysis results demonstrated that the TGFp was successfully grafted to the surface of the PSC. Scanning electron microscopy and x-ray diffraction showed that PSC-TGFp possessed good in vitro bioactivity. After soaking in simulated body fluid for 24 h, hydroxyapatite formed on the surface of PSC-TGFp. Enzyme-linked immunosorbent assay showed that PSC-TGFp could capture endogenous transforming growth factor β1 from dentin matrix-extracted proteins (DMEP) and release it slowly over 21 d. Cytologic experiments revealed that PSC-TGFp after adsorbing DMEP could enhance the adhesion, migration, viability, and odontogenic differentiation of stem cells from apical papilla. The results highlight that PSC-TGFp may be a promising biomaterial to manipulate endogenous growth factors for regenerative endodontic therapy in the future.
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Affiliation(s)
- J Wu
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - S Mao
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - L Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - D Qiu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - S Wang
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Y Dong
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
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13
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Bei J, Xu G, Chang J, Wang X, Qiu D, Ruan J, Li X, Gao S. [SARS-CoV-2 with transcription regulatory sequence motif mutation poses a greater threat]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:399-404. [PMID: 35426804 DOI: 10.12122/j.issn.1673-4254.2022.03.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To analyze the mutations in transcription regulatory sequences (TRSs) of coronaviruss (CoV) to provide the basis for exploring the patterns of SARS-CoV-2 transmission and outbreak. METHODS A combined evolutionary and molecular functional analysis of all sets of publicly available genomic data of viruses was performed. RESULTS A leader transcription regulatory sequence (TRS-L) usually comprises the first 60-70 nts of the 5' UTR in a CoV genome, and the body transcription regulatory sequences (TRS-Bs) are located immediately upstream of the genes other than ORF1a and 1b. In each CoV genome, the TRS-L and TRS-Bs share a specific consensus sequence, namely the TRS motif. Any changes of nucleotide residues in the TRS motifs are defined as TRS motif mutations. Mutations in the TRS-L or multiple TRS-Bs result in superattenuated variants. The spread of super-attenuated variants may cause an increase in asymptomatic or mild infections, prolonged incubation periods and a decreased detection rate of the viruses, thus posing new challenges to SARS-CoV-2 prevention and control. The super-attenuated variants also increase their possibility of long-term coexistence with humans. The Delta variant is significantly different from all the previous variants and may lead to a large-scale transmission. The Delta variant (B.1.617.2) with TRS motif mutation has already appeared and shown signs of spreading in Singapore, which, and even the Southeast Asia, may become the new epicenter of the next wave of SARS-CoV-2 outbreak. CONCLUSION TRS motif mutation will occur in all variants of SARS-CoV-2 and may result in super-attenuated variants. Only super-attenuated variants with TRS motif mutations will eventually lose the abilities of cross-species transmission and causing outbreaks.
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Affiliation(s)
- J Bei
- Agro-Biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510275, China
| | - G Xu
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - J Chang
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - X Wang
- School of Mathematical Sciences, Nankai University, Tianjin 300071, China
| | - D Qiu
- John Van Geest Cancer Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, NG11 8NS, United Kingdom
| | - J Ruan
- School of Mathematical Sciences, Nankai University, Tianjin 300071, China
| | - X Li
- College of Life Sciences, Nankai University, Tianjin 300071, China
| | - S Gao
- College of Life Sciences, Nankai University, Tianjin 300071, China
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14
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Qiu D, Li J, Zhang J, Minfeng C, Gao X, Tang Y, Zhang Y, Yi X, Yin H, Gan Y, Wang G, Zu X, Hu S, Yi C. Dual-Tracer PET/CT-Targeted, mpMRI-Targeted, systematic biopsy, and combined biopsy for the diagnosis of prostate cancer. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00824-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Qiu D, Hu W, Zhou Y, Xiao J, Hu R, Wei Q, Zhang Y, Feng J, Sun F, Sun J, Yang G, He G. TaASR1-D confers abiotic stress resistance by affecting ROS accumulation and ABA signalling in transgenic wheat. Plant Biotechnol J 2021; 19:1588-1601. [PMID: 33638922 PMCID: PMC8384601 DOI: 10.1111/pbi.13572] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 02/14/2021] [Accepted: 02/18/2021] [Indexed: 05/20/2023]
Abstract
Cultivating new crop cultivars with multiple abiotic stress tolerances is important for crop production. The abscisic acid-stress-ripening (ASR) protein has been shown to confer abiotic stress tolerance in plants. However, the mechanisms of ASR function under stress condition remain largely unclear. In this study, we characterized all ASR family members in common wheat and constitutively overexpressed TaASR1-D in a commercial hexaploid wheat cultivar Zhengmai 9023. The transgenic wheat plants exhibited increased tolerance to multiple abiotic stresses and increased grain yields under salt stress condition. Overexpression of TaASR1-D conferred enhanced antioxidant capacity and ABA sensitivity in transgenic wheat plants. Further, RNA in situ hybridization results showed that TaASR1-D had higher expression levels in the vascular tissues of leaves and the parenchyma cells around the vascular tissues of roots and stems. Yeast one-hybrid and electrophoretic mobility shift assays revealed that TaASR1-D could directly bind the specific cis-elements in the promoters of TaNCED1 and TaGPx1-D. In conclusion, our findings suggest that TaASR1-D can be used to breed new wheat cultivars with increased multiple abiotic stress tolerances, and TaASR1-D enhances abiotic stress tolerances by reinforcing antioxidant capacity and ABA signalling.
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Affiliation(s)
- Ding Qiu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
| | - Wei Hu
- Key Laboratory of Biology and Genetic Resources of Tropical CropsInstitute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikouChina
| | - Yu Zhou
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
| | - Jie Xiao
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
| | - Rui Hu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
| | - Qiuhui Wei
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
| | - Yang Zhang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
| | - Jialu Feng
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
| | - Fusheng Sun
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
| | - Jiutong Sun
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
| | - Guangxiao Yang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
| | - Guangyuan He
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and TechnologyKey Laboratory of Molecular Biophysics of Chinese Ministry of EducationCollege of Life Science and TechnologyHuazhong University of Science and Technology (HUST)WuhanChina
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16
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Ohshima S, Zhang P, Kume H, Deng C, Miyashita A, Kobayashi S, Okada H, Minami T, Kado S, Adulsiriswad P, Qiu D, Luo M, Matoike R, Suzuki T, Konoshima S, Mizuuchi T, Nagasaki K. Development of a multi-channel 320 GHz interferometer for high density plasma measurement in Heliotron J. Rev Sci Instrum 2021; 92:053519. [PMID: 34243360 DOI: 10.1063/5.0043581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 04/12/2021] [Indexed: 06/13/2023]
Abstract
We report the development of a new interferometer with two stable, high-power, 320 GHz solid-state sources in Heliotron J. A heterodyne Michelson interferometer optical scheme is employed. Two solid-state oscillators are utilized as sources with a fixed frequency at 320 GHz and frequency tunable of 312-324 GHz. Quasi-optical techniques are used for beam transmission. The beam is elongated in the vertical direction with two off-axis parabolic mirrors and injected into the plasma as a sheet beam for the multi-channel measurement (>5 ch.). Passing through the plasma, the beam is reflected at a retroreflector-array installed at the vacuum chamber wall. The retroreflector-array is a bunch of retroreflector structures, which can suppress the beam refraction caused by plasma without much space inside a vacuum chamber unlike a single retroreflector and can facilitate the system design. The source, detectors, and the retroreflector-array are tested to evaluate their basic performance on a tabletop experiment.
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Affiliation(s)
- S Ohshima
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan
| | - P Zhang
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - H Kume
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - C Deng
- University of California, Los Angeles, Los Angeles, California 90095-1594, USA
| | - A Miyashita
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - S Kobayashi
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan
| | - H Okada
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - T Minami
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - S Kado
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - P Adulsiriswad
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - D Qiu
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - M Luo
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - R Matoike
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - T Suzuki
- Graduate School of Energy Science, Kyoto University, Kyoto 611-0011, Japan
| | - S Konoshima
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan
| | - T Mizuuchi
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan
| | - K Nagasaki
- Institute of Advanced Energy, Kyoto University, Kyoto 611-0011, Japan
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17
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Dehkharghani S, Qiu D. MR Thermometry in Cerebrovascular Disease: Physiologic Basis, Hemodynamic Dependence, and a New Frontier in Stroke Imaging. AJNR Am J Neuroradiol 2020; 41:555-565. [PMID: 32139425 DOI: 10.3174/ajnr.a6455] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/02/2020] [Indexed: 01/20/2023]
Abstract
The remarkable temperature sensitivity of the brain is widely recognized and has been studied for its role in the potentiation of ischemic and other neurologic injuries. Pyrexia frequently complicates large-vessel acute ischemic stroke and develops commonly in critically ill neurologic patients; the profound sensitivity of the brain even to minor intraischemic temperature changes, together with the discovery of brain-to-systemic as well as intracerebral temperature gradients, has thus compelled the exploration of cerebral thermoregulation and uncovered its immutable dependence on cerebral blood flow. A lack of pragmatic and noninvasive tools for spatially and temporally resolved brain thermometry has historically restricted empiric study of cerebral temperature homeostasis; however, MR thermometry (MRT) leveraging temperature-sensitive nuclear magnetic resonance phenomena is well-suited to bridging this long-standing gap. This review aims to introduce the reader to the following: 1) fundamental aspects of cerebral thermoregulation, 2) the physical basis of noninvasive MRT, and 3) the physiologic interdependence of cerebral temperature, perfusion, metabolism, and viability.
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Affiliation(s)
- S Dehkharghani
- From the Department of Radiology (S.D.), New York University Langone Health, New York, New York
| | - D Qiu
- Department of Radiology (D.Q.), Emory University Hospital, Atlanta, Georgia
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18
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Sun F, Xie X, Zhang Y, Duan J, Ma M, Wang Y, Qiu D, Lu X, Yang G, He G. Effects of Cold Jet Atmospheric Pressure Plasma on the Structural Characteristics and Immunoreactivity of Celiac-Toxic Peptides and Wheat Storage Proteins. Int J Mol Sci 2020; 21:ijms21031012. [PMID: 32033029 PMCID: PMC7036898 DOI: 10.3390/ijms21031012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/16/2020] [Accepted: 01/20/2020] [Indexed: 01/09/2023] Open
Abstract
The present research reported the effects of structural properties and immunoreactivity of celiac-toxic peptides and wheat storage proteins modified by cold jet atmospheric pressure (CJAP) plasma. It could generate numerous high-energy excited atoms, photons, electrons, and reactive oxygen and nitrogen species, including O3, H2O2, •OH, NO2- and NO3- etc., to modify two model peptides and wheat storage proteins. The Orbitrap HR-LC-MS/MS was utilized to identify and quantify CJAP plasma-modified model peptide products. Backbone cleavage of QQPFP and PQPQLPY at specific proline and glutamine residues, accompanied by hydroxylation at the aromatic ring of phenylalanine and tyrosine residues, contributed to the reduction and modification of celiac-toxic peptides. Apart from fragmentation, oxidation, and agglomeration states were evaluated, including carbonyl formation and the decline of γ-gliadin. The immunoreactivity of gliadin extract declined over time, demonstrating a significant decrease by 51.95% after 60 min of CJAP plasma treatment in vitro. The CJAP plasma could initiate depolymerization of gluten polymer, thereby reducing the amounts of large-sized polymers. In conclusion, CJAP plasma could be employed as a potential technique in the modification and reduction of celiac-toxic peptides and wheat storage proteins.
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Affiliation(s)
- Fusheng Sun
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
| | - Xiaoxue Xie
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
| | - Yufan Zhang
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
| | - Jiangwei Duan
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (J.D.); (M.M.); (X.L.)
| | - Mingyu Ma
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (J.D.); (M.M.); (X.L.)
| | - Yaqiong Wang
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
| | - Ding Qiu
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
| | - Xinpei Lu
- State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; (J.D.); (M.M.); (X.L.)
| | - Guangxiao Yang
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
- Correspondence: (G.Y.); (G.H.); Tel.: +86-27-87792271 (G.Y. & G.H.); Fax: +86-27-87792272 (G.Y. & G.H.)
| | - Guangyuan He
- The Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China; (F.S.); (X.X.); (Y.Z.); (Y.W.); (D.Q.)
- Correspondence: (G.Y.); (G.H.); Tel.: +86-27-87792271 (G.Y. & G.H.); Fax: +86-27-87792272 (G.Y. & G.H.)
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19
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Wang Y, Qin X, Chen Y, Xing J, Gao J, Qiu D. Seroprevalence of toxoplasma gondii infection in goats in the five northwestern provinces of China. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-11428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
| | - X. Qin
- Liaocheng University, China
| | | | | | | | - D. Qiu
- Tarim University, China; Huazhong Agricultural University, China
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20
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Zhao K, Cheng S, Miao N, Xu P, Lu X, Zhang Y, Wang M, Ouyang X, Yuan X, Liu W, Lu X, Zhou P, Gu J, Zhang Y, Qiu D, Jin Z, Su C, Peng C, Wang JH, Dong MQ, Wan Y, Ma J, Cheng H, Huang Y, Yu Y. A Pandas complex adapted for piRNA-guided transcriptional silencing and heterochromatin formation. Nat Cell Biol 2019; 21:1261-1272. [PMID: 31570835 DOI: 10.1038/s41556-019-0396-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/22/2019] [Indexed: 11/09/2022]
Abstract
The repression of transposons by the Piwi-interacting RNA (piRNA) pathway is essential to protect animal germ cells. In Drosophila, Panoramix enforces transcriptional silencing by binding to the target-engaged Piwi-piRNA complex, although the precise mechanisms by which this occurs remain elusive. Here, we show that Panoramix functions together with a germline-specific paralogue of a nuclear export factor, dNxf2, and its cofactor dNxt1 (p15), to suppress transposon expression. The transposon RNA-binding protein dNxf2 is required for animal fertility and Panoramix-mediated silencing. Transient tethering of dNxf2 to nascent transcripts leads to their nuclear retention. The NTF2 domain of dNxf2 competes dNxf1 (TAP) off nucleoporins, a process required for proper RNA export. Thus, dNxf2 functions in a Panoramix-dNxf2-dependent TAP/p15 silencing (Pandas) complex that counteracts the canonical RNA exporting machinery and restricts transposons to the nuclear peripheries. Our findings may have broader implications for understanding how RNA metabolism modulates heterochromatin formation.
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Affiliation(s)
- Kang Zhao
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Sha Cheng
- University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Molecular Biology, Shanghai Key Laboratory of Molecular Andrology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
| | - Na Miao
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Ping Xu
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,National Engineering Laboratory of AIDS Vaccine, Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
| | - Xiaohua Lu
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yuhan Zhang
- State Key Laboratory of Molecular Biology, Shanghai Key Laboratory of Molecular Andrology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China.,State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences, Fudan University, Shanghai, China
| | - Ming Wang
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Xuan Ouyang
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Xun Yuan
- University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Molecular Biology, Shanghai Key Laboratory of Molecular Andrology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
| | - Weiwei Liu
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Xin Lu
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Peng Zhou
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jiaqi Gu
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences, Fudan University, Shanghai, China
| | - Yiqun Zhang
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Ding Qiu
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Zhaohui Jin
- University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Molecular Biology, Shanghai Key Laboratory of Molecular Andrology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
| | - Chen Su
- National Facility for Protein Science in Shanghai, Zhangjiang Lab, Shanghai Science Research Center, Chinese Academy of Sciences, Shanghai, China
| | - Chao Peng
- National Facility for Protein Science in Shanghai, Zhangjiang Lab, Shanghai Science Research Center, Chinese Academy of Sciences, Shanghai, China
| | - Jian-Hua Wang
- Graduate School of Peking Union Medical College and Chinese Academy of Sciences of Medical Sciences, Beijing, China
| | - Meng-Qiu Dong
- National Institute of Biological Sciences, Beijing, China.,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, China
| | - Youzhong Wan
- National Engineering Laboratory of AIDS Vaccine, Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
| | - Jinbiao Ma
- State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences, Fudan University, Shanghai, China
| | - Hong Cheng
- University of Chinese Academy of Sciences, Beijing, China.,State Key Laboratory of Molecular Biology, Shanghai Key Laboratory of Molecular Andrology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
| | - Ying Huang
- University of Chinese Academy of Sciences, Beijing, China. .,State Key Laboratory of Molecular Biology, Shanghai Key Laboratory of Molecular Andrology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China. .,Shanghai Key Laboratory of Biliary Tract Disease Research, Shanghai Research Center of Biliary Tract Disease, Department of General Surgery, Xinhua Hospital, affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Yang Yu
- Key Laboratory of RNA Biology, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China. .,University of Chinese Academy of Sciences, Beijing, China.
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21
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Hao H, Zhang Q, Zhu H, Wen Y, Qiu D, Xiong J, Fu X, Wu Y, Meng K, Li J. Icaritin promotes tumor T-cell infiltration and induces antitumor immunity in mice. Eur J Immunol 2019; 49:2235-2244. [PMID: 31465113 DOI: 10.1002/eji.201948225] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 08/02/2019] [Accepted: 08/26/2019] [Indexed: 01/20/2023]
Abstract
Icaritin, a hydrolytic product of icariin isolated from traditional Chinese herbal medicine genus Epimedium, has many pharmacological and biological activities. Here, we show that icaritin can effectively decrease tumor burden of murine B16F10 melanoma and MC38 colorectal tumors in a T-cell dependent manner. The treatment effects are associated with increased CD8 T-cell infiltration and increased effector memory T-cell frequency. In vivo depletion of CD8 T cell using an anti-CD8 monoclonal antibody abolished the antitumor effect, which supports the critical role of CD8 T cells during icaritin treatment. By analyzing immune cells in the tumor tissue, we found reduced frequency of CD11b+ Gr1+ myeloid-derived suppression cells (MDSCs) infiltration and downregulation of PD-L1 expression on MDSCs after icaritin treatment. This was not limited to MDSCs, as icaritin also decreased the expression of PD-L1 on neutrophils. Importantly, the combination of anti-PD-1/CTLA-4 and icaritin significantly enhances antitumor ability and increases the efficacy of either treatment alone. Our findings reveal that icaritin induces antitumor immunity in a CD8 T-cell-dependent way and justify further investigation of combining immune checkpoint therapy to icaritin-based antitumor therapy.
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Affiliation(s)
- Haibang Hao
- Institute of Immunology, PLA, Third Military Medical University (Army Medical University), Chongqing, China.,Beijing Shenogen Pharma Group Ltd, Beijing, China
| | - Qi Zhang
- Beijing Shenogen Pharma Group Ltd, Beijing, China
| | - Hai Zhu
- Beijing Shenogen Pharma Group Ltd, Beijing, China
| | - Yuxiang Wen
- Institute of Immunology, PLA, Third Military Medical University (Army Medical University), Chongqing, China
| | - Ding Qiu
- Institute of Immunology, PLA, Third Military Medical University (Army Medical University), Chongqing, China
| | - Jian Xiong
- Institute of Immunology, PLA, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaolan Fu
- Institute of Immunology, PLA, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yuzhang Wu
- Institute of Immunology, PLA, Third Military Medical University (Army Medical University), Chongqing, China
| | - Kun Meng
- Beijing Shenogen Pharma Group Ltd, Beijing, China
| | - Jian Li
- Institute of Immunology, PLA, Third Military Medical University (Army Medical University), Chongqing, China
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22
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Li Q, Luo H, Peng H, Zhong M, Liu X, Qiu D, Yang H, He Y, Li C, Yin L, Huang X, Tian X, He G, Wang Y, Jin F. Plan Quality Evaluation and Preliminary Application of a Novel Plan Difficulty Index in Radiotherapy of Lung Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Li J, Qiu D, Liu Y, Xiong J, Wang Y, Yang X, Fu X, Zheng L, Luo G, Xing M, Wu Y. Cytomembrane Infused Polymer Accelerating Delivery of Myelin Antigen Peptide to Treat Experimental Autoimmune Encephalomyelitis. ACS Nano 2018; 12:11579-11590. [PMID: 30265798 DOI: 10.1021/acsnano.8b06575] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
While there has been extensive development of soluble epitope-specific peptides to induce immune tolerance for the treatment of autoimmune diseases, the clinical efficacy of soluble-peptides-based immunotherapy was still uncertain. Recent strategies to develop antigen carriers coupled with peptides have shown promising results in preclinical animal models. Here we developed functional amphiphilic hyperbranched (HB) polymers with different grafting degrees of hydrophobic chains as antigen myelin antigen oligodendrocyte glycoprotein (MOG) peptide carriers and evaluated their ability to induce immune tolerance. We show that these polymers could efficiently deliver antigen peptide, and the uptake amount by bone marrow dendritic cells (BMDCs) was correlated with the hydrophobicity of polymers. We observe that these polymers have a higher ability to activate BMDCs and a higher efficacy to induce antigen-specific T cell apoptosis than soluble peptides, irrespective of hydrophobicity. We show that intravenous injection of polymer-conjugated MOG peptide, but not soluble peptide, markedly treats the clinical symptoms of experimental autoimmune encephalomyelitis in mice. Together, these results demonstrate the potential for using amphiphilic HB polymers as antigen carriers to deliver peptides for pathogenic autoreactive T cell deletion/tolerance strategies to treat autoimmune disorders.
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Affiliation(s)
- Jian Li
- Institute of Immunology, PLA , Third Military Medical University (Army Medical University) , Chongqing 400038 , China
| | - Ding Qiu
- Institute of Immunology, PLA , Third Military Medical University (Army Medical University) , Chongqing 400038 , China
| | - Yuqing Liu
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Disease Proteomics of Chongqing, Southwest Hospital , Third Military Medical University (Army Medical University) , Chongqing , 400038 , China
- Department of Mechanical Engineering , University of Manitoba , Winnipeg , MB R3T 2N2 , Canada
| | - Jian Xiong
- Institute of Immunology, PLA , Third Military Medical University (Army Medical University) , Chongqing 400038 , China
| | - Ying Wang
- Department of Mechanical Engineering , University of Manitoba , Winnipeg , MB R3T 2N2 , Canada
| | - Xia Yang
- Institute of Immunology, PLA , Third Military Medical University (Army Medical University) , Chongqing 400038 , China
| | - Xiaolan Fu
- Institute of Immunology, PLA , Third Military Medical University (Army Medical University) , Chongqing 400038 , China
| | - Lixin Zheng
- Molecular Development of the Immune System Section, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases , National Institutes of Health , Bethesda , Maryland 20892 , United States
| | - Gaoxing Luo
- Department of Mechanical Engineering , University of Manitoba , Winnipeg , MB R3T 2N2 , Canada
| | - Malcolm Xing
- Institute of Burn Research, State Key Laboratory of Trauma, Burn and Combined Injury, Key Laboratory of Disease Proteomics of Chongqing, Southwest Hospital , Third Military Medical University (Army Medical University) , Chongqing , 400038 , China
- Department of Mechanical Engineering , University of Manitoba , Winnipeg , MB R3T 2N2 , Canada
| | - Yuzhang Wu
- Institute of Immunology, PLA , Third Military Medical University (Army Medical University) , Chongqing 400038 , China
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24
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Gu J, Wang M, Yang Y, Qiu D, Zhang Y, Ma J, Zhou Y, Hannon GJ, Yu Y. Corrigendum to "GoldCLIP: Gel-omitted Ligation-dependent CLIP" [Genomics Proteomics Bioinformatics 16 (2) (2018) 136-143]. Genomics Proteomics Bioinformatics 2018; 16:221-222. [PMID: 30037509 PMCID: PMC6076381 DOI: 10.1016/j.gpb.2018.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiaqi Gu
- State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences, Fudan University, Shanghai 200438, China; CAS Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Ming Wang
- CAS Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Yang Yang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Ding Qiu
- CAS Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Yiqun Zhang
- CAS Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Jinbiao Ma
- State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences, Fudan University, Shanghai 200438, China.
| | - Yu Zhou
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.
| | - Gregory J Hannon
- Cancer Research UK, Li Ka Shing Centre, University of Cambridge, Cambridge CB2 ORE, United Kingdom.
| | - Yang Yu
- CAS Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
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25
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Zhang Y, Zhao H, Zhou S, He Y, Luo Q, Zhang F, Qiu D, Feng J, Wei Q, Chen L, Chen M, Chang J, Yang G, He G. Expression of TaGF14b, a 14-3-3 adaptor protein gene from wheat, enhances drought and salt tolerance in transgenic tobacco. Planta 2018; 248:117-137. [PMID: 29616395 DOI: 10.1007/s00425-018-2887-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 03/29/2018] [Indexed: 05/22/2023]
Abstract
MAIN CONCLUSION TaGF14b enhances tolerance to multiple stresses through ABA signaling pathway by altering physiological and biochemical processes, including ROS-scavenging system, stomatal closure, compatible osmolytes, and stress-related gene expressions in tobaccos. The 14-3-3 proteins are involved in plant growth, development, and in responding to abiotic stresses. However, the precise functions of 14-3-3s in responding to drought and salt stresses remained unclear, especially in wheat. In this study, a 14-3-3 gene from wheat, designated TaGF14b, was cloned and characterized. TaGF14b was upregulated by polyethylene glycol 6000, sodium chloride, hydrogen peroxide, and abscisic acid (ABA) treatments. Ectopic expression of TaGF14b in tobacco conferred enhanced tolerance to drought and salt stresses. Transgenic tobaccos had longer root, better growth status, and higher relative water content, survival rate, photosynthetic rate, and water use efficiency than control plants under drought and salt stresses. The contribution of TaGF14b to drought and salt tolerance relies on the regulations of ABA biosynthesis and ABA signaling, as well as stomatal closure and stress-related gene expressions. Moreover, TaGF14b expression could significantly enhance the reactive oxygen species (ROS) scavenging system to ameliorate oxidative damage to cells. In addition, TaGF14b increased tolerance to osmotic stress evoked by drought and salinity through modifying water conservation and compatible osmolytes in plants. In conclusion, TaGF14b enhances tolerance to multiple abiotic stresses through the ABA signaling pathway in transgenic tobaccos by altering physiological and biochemical processes.
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Affiliation(s)
- Yang Zhang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Hongyan Zhao
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Shiyi Zhou
- Hubei Key Laboratory of Purification and Application of Plant Anticancer Active Ingredients, School of Chemistry and Life Sciences, Hubei University of Education, Wuhan, 430205, China
| | - Yuan He
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Qingchen Luo
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Fan Zhang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Ding Qiu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jialu Feng
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Qiuhui Wei
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Lihong Chen
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Mingjie Chen
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Junli Chang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Guangxiao Yang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Guangyuan He
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China.
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Gu J, Wang M, Yang Y, Qiu D, Zhang Y, Ma J, Zhou Y, Hannon GJ, Yu Y. GoldCLIP: Gel-omitted Ligation-dependent CLIP. Genomics Proteomics Bioinformatics 2018; 16:136-143. [PMID: 29709556 PMCID: PMC6112358 DOI: 10.1016/j.gpb.2018.04.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 04/04/2018] [Indexed: 12/01/2022]
Abstract
Protein-RNA interaction networks are essential to understand gene regulation control. Identifying binding sites of RNA-binding proteins (RBPs) by the UV-crosslinking and immunoprecipitation (CLIP) represents one of the most powerful methods to map protein-RNA interactions in vivo. However, the traditional CLIP protocol is technically challenging, which requires radioactive labeling and suffers from material loss during PAGE-membrane transfer procedures. Here we introduce a super-efficient CLIP method (GoldCLIP) that omits all gel purification steps. This nonisotopic method allows us to perform highly reproducible CLIP experiments with polypyrimidine tract-binding protein (PTB), a classical RBP in human cell lines. In principle, our method guarantees sequencing library constructions, providing the protein of interest can be successfully crosslinked to RNAs in living cells. GoldCLIP is readily applicable to diverse proteins to uncover their endogenous RNA targets.
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Affiliation(s)
- Jiaqi Gu
- State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences, Fudan University, Shanghai 200438, China; CAS Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Ming Wang
- CAS Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Yang Yang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Ding Qiu
- CAS Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Yiqun Zhang
- CAS Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Jinbiao Ma
- State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences, Fudan University, Shanghai 200438, China.
| | - Yu Zhou
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.
| | - Gregory J Hannon
- Cancer Research UK, Li Ka Shing Centre, University of Cambridge, Cambridge CB2 ORE, United Kingdom.
| | - Yang Yu
- CAS Key Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China.
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Saindane AM, Qiu D, Oshinski JN, Newman NJ, Biousse V, Bruce BB, Holbrook JF, Dale BM, Zhong X. Noninvasive Assessment of Intracranial Pressure Status in Idiopathic Intracranial Hypertension Using Displacement Encoding with Stimulated Echoes (DENSE) MRI: A Prospective Patient Study with Contemporaneous CSF Pressure Correlation. AJNR Am J Neuroradiol 2018; 39:311-316. [PMID: 29284598 DOI: 10.3174/ajnr.a5486] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Accepted: 10/22/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Intracranial pressure is estimated invasively by using lumbar puncture with CSF opening pressure measurement. This study evaluated displacement encoding with stimulated echoes (DENSE), an MR imaging technique highly sensitive to brain motion, as a noninvasive means of assessing intracranial pressure status. MATERIALS AND METHODS Nine patients with suspected elevated intracranial pressure and 9 healthy control subjects were included in this prospective study. Controls underwent DENSE MR imaging through the midsagittal brain. Patients underwent DENSE MR imaging followed immediately by lumbar puncture with opening pressure measurement, CSF removal, closing pressure measurement, and immediate repeat DENSE MR imaging. Phase-reconstructed images were processed producing displacement maps, and pontine displacement was calculated. Patient data were analyzed to determine the effects of measured pressure on pontine displacement. Patient and control data were analyzed to assess the effects of clinical status (pre-lumbar puncture, post-lumbar puncture, or control) on pontine displacement. RESULTS Patients demonstrated imaging findings suggesting chronically elevated intracranial pressure, whereas healthy control volunteers demonstrated no imaging abnormalities. All patients had elevated opening pressure (median, 36.0 cm water), decreased by the removal of CSF to a median closing pressure of 17.0 cm water. Patients pre-lumbar puncture had significantly smaller pontine displacement than they did post-lumbar puncture after CSF pressure reduction (P = .001) and compared with controls (P = .01). Post-lumbar puncture patients had statistically similar pontine displacements to controls. Measured CSF pressure in patients pre- and post-lumbar puncture correlated significantly with pontine displacement (r = 0.49; P = .04). CONCLUSIONS This study establishes a relationship between pontine displacement from DENSE MR imaging and measured pressure obtained contemporaneously by lumbar puncture, providing a method to noninvasively assess intracranial pressure status in idiopathic intracranial hypertension.
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Affiliation(s)
- A M Saindane
- From the Departments of Radiology and Imaging Sciences (A.M.S., D.Q., J.N.O., J.F.H.)
| | - D Qiu
- From the Departments of Radiology and Imaging Sciences (A.M.S., D.Q., J.N.O., J.F.H.)
| | - J N Oshinski
- From the Departments of Radiology and Imaging Sciences (A.M.S., D.Q., J.N.O., J.F.H.)
- Department of Biomedical Engineering (J.N.O.), Georgia Institute of Technology, Atlanta, Georgia
| | - N J Newman
- Ophthalmology (N.J.N., V.B., B.B.B.), Emory University, Atlanta, Georgia
| | - V Biousse
- Ophthalmology (N.J.N., V.B., B.B.B.), Emory University, Atlanta, Georgia
| | - B B Bruce
- Ophthalmology (N.J.N., V.B., B.B.B.), Emory University, Atlanta, Georgia
| | - J F Holbrook
- From the Departments of Radiology and Imaging Sciences (A.M.S., D.Q., J.N.O., J.F.H.)
| | - B M Dale
- MR R&D Collaborations (B.M.D.), Siemens Healthineers, Apex, North Carolina
| | - X Zhong
- MR R&D Collaborations (X.Z.), Siemens Healthineers, Atlanta, Georgia
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Wang G, Qiu D, Yang H, Liu W. The prevalence and odds of depression in patients with vitiligo: a meta-analysis. J Eur Acad Dermatol Venereol 2018; 32:1343-1351. [PMID: 29222958 DOI: 10.1111/jdv.14739] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Accepted: 11/17/2017] [Indexed: 12/17/2022]
Abstract
OBJECTIVE The objective of this study was to provide a pooled estimate of the prevalence and odds of depression in patients with vitiligo. METHODS A systematic literature search of Medline, Embase and Cochrane library databases was conducted. The proportions and mean questionnaire values for depression were pooled according to different evaluation methods. In controlled studies, odds ratio and standardized mean differences compared depression in vitiligo patients with healthy controls. RESULTS One thousand nine hundred and sixty-five patients were identified from 20 eligible cohorts to be included in the present meta-analysis review. Sample sizes ranged from 30 to 308 for each analysis. The pooled prevalence of depression across 17 unique populations (n = 1711) was 29% (95% CI 20-39). The prevalence of clinical depression was 8% (95% CI 2%-14%) using Diagnostic and Statistical Manual of Mental Disorders IV or International Classification of Diseases codes-10, and the prevalence of depressive symptoms was 33% (95% CI 23%-44%) using validated screening inventory and rating scales. Patient with vitiligo was 4.96 times more likely to display depression compared with controls. Subgroup analysis showed that the prevalence of depression in Asian and female patients with vitiligo was significantly higher than that in Caucasian and male ones. The pooled prevalence of depressive symptoms was higher (56%, 95% CI 0.5-0.62), and the heterogeneity was lowering cases with Hamilton Depression Rating Scale (HDRS) questionnaire when compared with other questionnaires. CONCLUSIONS This meta-analysis review indicates that the prevalence of depression is high in patients with vitiligo. The HDRS questionnaire may be the most sensitive tool for testing the depressive symptoms among patients with vitiligo.
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Affiliation(s)
- G Wang
- Department of Dermatology, The Chinese People's Liberation Army 404 Hospital, Weihai, China
| | - D Qiu
- Department of Dermatology, Central Hospital of Zibo, Zibo, China
| | - H Yang
- Department of Dermatology, The Chinese People's Liberation Army 404 Hospital, Weihai, China
| | - W Liu
- Department of Dermatology, The Chinese People's Liberation Army 404 Hospital, Weihai, China
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Feng J, Wang L, Wu Y, Luo Q, Zhang Y, Qiu D, Han J, Su P, Xiong Z, Chang J, Yang G, He G. TaSnRK2.9, a Sucrose Non-fermenting 1-Related Protein Kinase Gene, Positively Regulates Plant Response to Drought and Salt Stress in Transgenic Tobacco. Front Plant Sci 2018; 9:2003. [PMID: 30693013 PMCID: PMC6339923 DOI: 10.3389/fpls.2018.02003] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 12/27/2018] [Indexed: 05/05/2023]
Abstract
Sucrose non-fermenting 1-related protein kinase 2 (SnRK2) family members play crucial roles in plant abiotic stress response. However, the precise mechanism underlying the function of SnRKs has not been thoroughly elucidated in plants. In this research, a novel SnRK2 gene, TaSnRK2.9 was cloned and characterized from common wheat. The expression of TaSnRK2.9 was upregulated by polyethylene glycol (PEG), NaCl, H2O2, abscisic acid (ABA), methyl jasmonate (MeJA), and ethrel treatments. TaSnRK2.9 was mainly expressed in wheat young root, stamen, pistil, and lemma. Overexpressing TaSnRK2.9 in transgenic tobacco enhanced plants' tolerance to drought and salt stresses both in young seedlings and mature plants with improved survival rate, seed germination rate, and root length. Physiological analyses suggest that TaSnRK2.9 improved antioxidant system such as superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and glutathione (GSH) to reduce the H2O2 content under drought or salt stress. Additionally, TaSnRK2.9 overexpression plants had elevated ABA content, implying that the function of TaSnRK2.9 may be ABA-dependent. Moreover, TaSnRK2.9 increased the expression of some ROS-related, ABA-related, and stress-response genes under osmotic or salt treatment. TaSnRK2.9 could interact with NtABF2 in yeast two-hybrid assay, and increased the expression of NtABF2 under mannitol or NaCl treatment in transgenic tobacco plants. In conclusion, overexpression of TaSnRK2.9 in tobacco conferred plants tolerance to drought and salt stresses through enhanced ROS scavenging ability, ABA-dependent signal transduction, and specific SnRK-ABF interaction.
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Affiliation(s)
- Jialu Feng
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Lianzhe Wang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- School of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan, China
| | - Yanan Wu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Qingchen Luo
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Yang Zhang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Ding Qiu
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Jiapeng Han
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Peipei Su
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Zhiyong Xiong
- Key Laboratory of Herbage and Endemic Crop Biotechnology, Ministry of Education, College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Junli Chang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Guangxiao Yang
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Guangxiao Yang, Guangyuan He,
| | - Guangyuan He
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Guangxiao Yang, Guangyuan He,
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Fleischer CC, Wu J, Qiu D, Park SE, Nahab F, Dehkharghani S. The Brain Thermal Response as a Potential Neuroimaging Biomarker of Cerebrovascular Impairment. AJNR Am J Neuroradiol 2017; 38:2044-2051. [PMID: 28935624 DOI: 10.3174/ajnr.a5380] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 07/09/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Brain temperature is critical for homeostasis, relating intimately to cerebral perfusion and metabolism. Cerebral thermometry is historically challenged by the cost and invasiveness of clinical and laboratory methodologies. We propose the use of noninvasive MR thermometry in patients with cerebrovascular disease, hypothesizing the presence of a measurable brain thermal response reflecting the tissue hemodynamic state. MATERIALS AND METHODS Contemporaneous imaging and MR thermometry were performed in 10 patients (32-68 years of age) undergoing acetazolamide challenge for chronic, anterior circulation steno-occlusive disease. Cerebrovascular reactivity was calculated with blood oxygen level-dependent imaging and arterial spin-labeling methods. Brain temperature was calculated pre- and post-acetazolamide using previously established chemical shift thermometry. Mixed-effects models of the voxelwise relationships between the brain thermal response and cerebrovascular reactivity were computed, and the significance of model coefficients was determined with an F test (P < .05). RESULTS We observed significant, voxelwise quadratic relationships between cerebrovascular reactivity from blood oxygen level-dependent imaging and the brain thermal response (x coefficient = 0.052, P < .001; x2coefficient = 0.0068, P < .001) and baseline brain temperatures (x coefficient = 0.59, P = .008; x2 coefficient = -0.13, P < .001). A significant linear relationship was observed for the brain thermal response with cerebrovascular reactivity from arterial spin-labeling (P = .001). CONCLUSIONS The findings support the presence of a brain thermal response exhibiting complex but significant interactions with tissue hemodynamics, which we posit to reflect a relative balance of heat-producing versus heat-dissipating tissue states. The brain thermal response is a potential noninvasive biomarker for cerebrovascular impairment.
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Affiliation(s)
- C C Fleischer
- From the Department of Biomedical Engineering (C.C.F., S.-E.P.), Emory University and Georgia Institute of Technology, Atlanta, Georgia
- the Departments of Radiology and Imaging Sciences (C.C.F., J.W., D.Q., S.D.)
| | - J Wu
- the Departments of Radiology and Imaging Sciences (C.C.F., J.W., D.Q., S.D.)
| | - D Qiu
- the Departments of Radiology and Imaging Sciences (C.C.F., J.W., D.Q., S.D.)
| | - S-E Park
- From the Department of Biomedical Engineering (C.C.F., S.-E.P.), Emory University and Georgia Institute of Technology, Atlanta, Georgia
| | - F Nahab
- Neurology (F.N., S.D.)
- Pediatrics (F.N.), Emory University School of Medicine, Atlanta, Georgia
| | - S Dehkharghani
- the Departments of Radiology and Imaging Sciences (C.C.F., J.W., D.Q., S.D.)
- Neurology (F.N., S.D.)
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Dehkharghani S, Fleischer CC, Qiu D, Yepes M, Tong F. Cerebral Temperature Dysregulation: MR Thermographic Monitoring in a Nonhuman Primate Study of Acute Ischemic Stroke. AJNR Am J Neuroradiol 2017; 38:712-720. [PMID: 28126752 DOI: 10.3174/ajnr.a5059] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/06/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Cerebral thermoregulation remains poorly understood. Temperature dysregulation is deeply implicated in the potentiation of cerebrovascular ischemia. We present a multiphasic, MR thermographic study in a nonhuman primate model of MCA infarction, hypothesizing detectable brain temperature disturbances and brain-systemic temperature decoupling. MATERIALS AND METHODS Three Rhesus Macaque nonhuman primates were sourced for 3-phase MR imaging: 1) baseline MR imaging, 2) 7-hour continuous MR imaging following minimally invasive, endovascular MCA stroke induction, and 3) poststroke day 1 MR imaging follow-up. MR thermometry was achieved by multivoxel spectroscopy (semi-localization by adiabatic selective refocusing) by using the proton resonance frequency chemical shift. The relationship of brain and systemic temperatures with time and infarction volumes was characterized by using a mixed-effects model. RESULTS Following MCA infarction, progressive cerebral hyperthermia was observed in all 3 subjects, significantly outpacing systemic temperature fluctuations. Highly significant associations were observed for systemic, hemispheric, and global brain temperatures (F-statistic, P = .0005 for all regressions) relative to the time from stroke induction. Significant differences in the relationship between temperature and time following stroke onset were detected when comparing systemic temperatures with ipsilateral (P = .007), contralateral (P = .004), and infarction core (P = .003) temperatures following multiple-comparisons correction. Significant associations were observed between infarction volumes and both systemic (P ≤ .01) and ipsilateral (P = .04) brain temperatures, but not contralateral brain temperature (P = .08). CONCLUSIONS Successful physiologic and continuous postischemic cerebral MR thermography was conducted and prescribed in a nonhuman primate infarction model to facilitate translatability. The results confirm hypothesized temperature disturbance and decoupling of physiologic brain-systemic temperature gradients. These findings inform a developing paradigm of brain thermoregulation and the applicability of brain temperature as a neuroimaging biomarker in CNS injury.
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Affiliation(s)
- S Dehkharghani
- From the Departments of Radiology and Imaging Sciences (S.D., D.Q., F.T.)
- Neurology (S.D., M.Y.), Emory University Hospital, Atlanta, Georgia
| | - C C Fleischer
- Department of Biomedical Engineering (C.C.F.), Emory University and Georgia Institute of Technology, Atlanta, Georgia
| | - D Qiu
- From the Departments of Radiology and Imaging Sciences (S.D., D.Q., F.T.)
| | - M Yepes
- Neurology (S.D., M.Y.), Emory University Hospital, Atlanta, Georgia
| | - F Tong
- From the Departments of Radiology and Imaging Sciences (S.D., D.Q., F.T.)
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Yang F, Yang Y, Wang Q, Wang Z, Miao Q, Xiao X, Wei Y, Bian Z, Sheng L, Chen X, Qiu D, Fang J, Tang R, Gershwin ME, Ma X. The risk predictive values of UK-PBC and GLOBE scoring system in Chinese patients with primary biliary cholangitis: the additional effect of anti-gp210. Aliment Pharmacol Ther 2017; 45:733-743. [PMID: 28083929 DOI: 10.1111/apt.13927] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 10/04/2016] [Accepted: 12/12/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Adequate risk stratification is critical for the management of the patients with primary biliary cholangitis (PBC). The UK-PBC and GLOBE scoring systems for prognosis of PBC have been proposed recently, but have not been validated in Asian population. AIM To validate the UK-PBC and GLOBE scoring systems in Chinese patients for prognosis of PBC. To clarify the role of anti-gp210 as a biomarker, and to investigate whether anti-gp210 could affect the prognostic values of UK-PBC and GLOBE scoring systems. METHODS We retrospectively analysed 276 patients with PBC evaluated between September 2004 and May 2016, including 133 anti-gp210+ and 143 anti-gp210- patients. RESULTS The 5-year adverse outcome-free survivals of anti-gp210+ vs. anti-gp210- patients were 70% and 85%, respectively (P = 0.005). Cirrhosis (P = 0.001), albumin level ≤40 g/L (P = 0.011) and platelet count ≤153 × 109 (P < 0.001) had a superimposition effect on anti-gp210 antibody as a risk factor. Furthermore, long-term prognoses were evaluated using the UK-PBC and GLOBE scores. For UK-PBC scoring system, the area under receiver operating characteristic curve (AUROC) was 0.924 for all patients with PBC (n = 223), 0.940 for anti-gp210+ patients (n = 110) and 0.888 for anti-gp210- patients (n = 113). For GLOBE scoring system, the area under receiver operating characteristic curve was 0.901 for all patients with PBC (n = 223), 0.924 for anti-gp210+ patients (n = 110) and 0.848 for anti-gp210- patients (n = 113). UK-PBC score >0.0578 (P < 0.001, HR: 32.736, 95% CI: 11.368-94.267) and GLOBE score <0.850 (P < 0.001, HR: 18.763, 95% CI: 7.968-44.180) were associated with poorer outcomes in the whole cohort. CONCLUSIONS The UK-PBC and GLOBE scoring systems were good 5-year prognostic predictors in Chinese patients with PBC, especially in anti-gp210+ patients. As a biomarker, anti-gp210 antibody was associated with a more severe cholestatic manifestation and a worse long-term prognosis. The anti-gp210 antibody could be added to further optimise the UK-PBC and GLOBE scoring systems.
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Affiliation(s)
- F Yang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Y Yang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Q Wang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Z Wang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Q Miao
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - X Xiao
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Y Wei
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - Z Bian
- Department of Gastroenterology and Hepatology, Nantong Institute of Liver Disease, Nantong Third People's Hospital, Nantong University, Jiangsu, China
| | - L Sheng
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - X Chen
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - D Qiu
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - J Fang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - R Tang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
| | - M E Gershwin
- Division of Rheumatology, Allergy, and Clinical Immunology, University of California at Davis, Davis, CA, USA
| | - X Ma
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China
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Wei Q, Luo Q, Wang R, Zhang F, He Y, Zhang Y, Qiu D, Li K, Chang J, Yang G, He G. A Wheat R2R3-type MYB Transcription Factor TaODORANT1 Positively Regulates Drought and Salt Stress Responses in Transgenic Tobacco Plants. Front Plant Sci 2017; 8:1374. [PMID: 28848578 PMCID: PMC5550715 DOI: 10.3389/fpls.2017.01374] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 07/24/2017] [Indexed: 05/18/2023]
Abstract
MYB transcription factors play important roles in plant responses to biotic and abiotic stress. In this study, TaODORANT1, a R2R3-MYB gene, was cloned from wheat (Triticum aestivum L.). TaODORANT1 was localized in the nucleus and functioned as a transcriptional activator. TaODORANT1 was up-regulated in wheat under PEG6000, NaCl, ABA, and H2O2 treatments. TaODORANT1-overexpressing transgenic tobacco plants exhibited higher relative water content and lower water loss rate under drought stress, as well as lower Na+ accumulation in leaves under salt stress. The transgenic plants showed higher CAT activity but lower ion leakage, H2O2 and malondialdehyde contents under drought and salt stresses. Besides, the transgenic plants also exhibited higher SOD activity under drought stress. Our results also revealed that TaODORANT1 overexpression up-regulated the expression of several ROS- and stress-related genes in response to both drought and salt stresses, thus enhancing transgenic tobacco plants tolerance. Our studies demonstrate that TaODORANT1 positively regulates plant tolerance to drought and salt stresses.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Junli Chang
- *Correspondence: Guangyuan He, Guangxiao Yang, Junli Chang,
| | - Guangxiao Yang
- *Correspondence: Guangyuan He, Guangxiao Yang, Junli Chang,
| | - Guangyuan He
- *Correspondence: Guangyuan He, Guangxiao Yang, Junli Chang,
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Liu J, Yang H, Yin Z, Jiang X, Zhong H, Qiu D, Zhu F, Li R. Remodeling of the gut microbiota and structural shifts in Preeclampsia patients in South China. Eur J Clin Microbiol Infect Dis 2016; 36:713-719. [PMID: 27988814 DOI: 10.1007/s10096-016-2853-z] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 11/22/2016] [Indexed: 12/13/2022]
Abstract
Preeclampsia (PE) is one of the pregnancy metabolic diseases. Since Gut microbiota play important roles in the hosts' metabolism, it is necessary to investigate the gut microbiota in PE patients, so that some intestinal dysbiosis might be detected as a biomarker for PE early diagnosis or as a target for intervention. One hundred subjects were categorized into four groups: 26 PE patients in late pregnancy, healthy individuals in early, middle, and late pregnancy (26/24/24 women). Gut microbiota were analyzed by sequencing the V4 region of the 16S rDNA gene using Illuminal MiSeq. Data were analyzed by multivariate statistics. Bacteroidetes was the dominant bacterium (47.57-52.35%) in the pregnant women in South China. Tenericutes increased while Verrucomicrobia almost disappeared in late pregnancy. In the PE patients, there was an overall increase in pathogenic bacteria, Clostridium perfringens (p = 0.03) and Bulleidia moorei (p = 0.00) but a reduction in probiotic bacteria Coprococcus catus (p = 0.03). Our research suggests that there is a significant structural shift of the gut microbiota in PE patients, which might be associated with the occurrence and development of the disease. However, further studies are required to understand the underlying mechanisms.
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Affiliation(s)
- J Liu
- The First Affiliate Hospital of Jinan University, Guangzhou, 510630, China
| | - H Yang
- Biomedical Translational Research Institute of Jinan University, Guangzhou, 510632, China
| | - Z Yin
- Biomedical Translational Research Institute of Jinan University, Guangzhou, 510632, China
| | - X Jiang
- Computer College of Central China Normal University, Wuhan, 430000, China
| | - H Zhong
- Biomedical Translational Research Institute of Jinan University, Guangzhou, 510632, China
| | - D Qiu
- The First Affiliate Hospital of Jinan University, Guangzhou, 510630, China
| | - F Zhu
- The First Affiliate Hospital of Jinan University, Guangzhou, 510630, China
| | - R Li
- The First Affiliate Hospital of Jinan University, Guangzhou, 510630, China.
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Wu J, Dehkharghani S, Nahab F, Allen J, Qiu D. The Effects of Acetazolamide on the Evaluation of Cerebral Hemodynamics and Functional Connectivity Using Blood Oxygen Level-Dependent MR Imaging in Patients with Chronic Steno-Occlusive Disease of the Anterior Circulation. AJNR Am J Neuroradiol 2016; 38:139-145. [PMID: 27758776 DOI: 10.3174/ajnr.a4973] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 08/20/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Measuring cerebrovascular reactivity with the use of vasodilatory stimuli, such as acetazolamide, is useful for chronic cerebrovascular steno-occlusive disease. The purpose of this study was to evaluate the effects of acetazolamide on the assessment of hemodynamic impairment and functional connectivity by using noninvasive resting-state blood oxygen level-dependent MR imaging. MATERIALS AND METHODS A 20-minute resting-state blood oxygen level-dependent MR imaging scan was acquired with infusion of acetazolamide starting at 5 minutes after scan initiation. A recently developed temporal-shift analysis technique was applied on blood oxygen level-dependent MR imaging data before and after acetazolamide infusion to identify regions with hemodynamic impairment, and the results were compared by using contrast agent-based DSC perfusion imaging as the reference standard. Functional connectivity was compared with and without correction on the signal by using information from temporal-shift analysis, before and after acetazolamide infusion. RESULTS Visually, temporal-shift analysis of blood oxygen level-dependent MR imaging data identified regions with compromised hemodynamics as defined by DSC, though performance deteriorated in patients with bilateral disease. The Dice similarity coefficient between temporal-shift and DSC maps was higher before (0.487 ± 0.150 by using the superior sagittal sinus signal as a reference for temporal-shift analysis) compared with after acetazolamide administration (0.384 ± 0.107) (P = .006, repeated-measures ANOVA). Functional connectivity analysis with temporal-shift correction identified brain network nodes that were otherwise missed. The accuracy of functional connectivity assessment decreased after acetazolamide administration (P = .015 for default mode network, repeated-measures ANOVA). CONCLUSIONS Temporal-shift analysis of blood oxygen level-dependent MR imaging can identify brain regions with hemodynamic compromise in relation to DSC among patients with chronic cerebrovascular disease. The use of acetazolamide reduces the accuracy of temporal-shift analysis and network connectivity evaluation.
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Affiliation(s)
- J Wu
- From the Departments of Radiology and Imaging Sciences (J.W., S.D., J.A., D.Q.)
| | - S Dehkharghani
- From the Departments of Radiology and Imaging Sciences (J.W., S.D., J.A., D.Q.)
| | - F Nahab
- Neurology (F.N.), Emory University School of Medicine, Atlanta, Georgia
| | - J Allen
- From the Departments of Radiology and Imaging Sciences (J.W., S.D., J.A., D.Q.)
| | - D Qiu
- From the Departments of Radiology and Imaging Sciences (J.W., S.D., J.A., D.Q.)
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Miller J, Drew L, Green O, Dukovski D, McEwan B, Villella A, Patel N, Bastos C, Cullen M, Danh H, Wachi S, Giuliano K, Longo K, Bhalla A, Qiu D, Zou C, Ivarsson M, Munoz B, Mehmet H. WS13.5 CFTR amplifiers are mutation-agnostic modulators that increase CFTR protein levels and complement other CF therapeutic modalities. J Cyst Fibros 2016. [DOI: 10.1016/s1569-1993(16)30137-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kumah DP, Dogan M, Ngai JH, Qiu D, Zhang Z, Su D, Specht ED, Ismail-Beigi S, Ahn CH, Walker FJ. Engineered Unique Elastic Modes at a BaTiO_{3}/(2×1)-Ge(001) Interface. Phys Rev Lett 2016; 116:106101. [PMID: 27015492 DOI: 10.1103/physrevlett.116.106101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Indexed: 06/05/2023]
Abstract
The strong interaction at an interface between a substrate and thin film leads to epitaxy and provides a means of inducing structural changes in the epitaxial film. These induced material phases often exhibit technologically relevant electronic, magnetic, and functional properties. The 2×1 surface of a Ge(001) substrate applies a unique type of epitaxial constraint on thin films of the perovskite oxide BaTiO_{3} where a change in bonding and symmetry at the interface leads to a non-bulk-like crystal structure of the BaTiO_{3}. While the complex crystal structure is predicted using first-principles theory, it is further shown that the details of the structure are a consequence of hidden phases found in the bulk elastic response of the BaTiO_{3} induced by the symmetry of forces exerted by the germanium substrate.
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Affiliation(s)
- D P Kumah
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - M Dogan
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - J H Ngai
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - D Qiu
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - Z Zhang
- Argonne National Laboratory, Advanced Photon Source, Argonne, Illinois 60439, USA
| | - D Su
- Brookhaven National Laboratory, Center for Functional Nanomaterials, Upton, New York 11973, USA
| | - E D Specht
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S Ismail-Beigi
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - C H Ahn
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
| | - F J Walker
- Center for Research on Interface Structures and Phenomena, Yale University, New Haven, Connecticut 06520, USA
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Dehkharghani S, Bammer R, Straka M, Albin LS, Kass-Hout O, Allen JW, Rangaraju S, Qiu D, Winningham MJ, Nahab F. Performance and Predictive Value of a User-Independent Platform for CT Perfusion Analysis: Threshold-Derived Automated Systems Outperform Examiner-Driven Approaches in Outcome Prediction of Acute Ischemic Stroke. AJNR Am J Neuroradiol 2015; 36:1419-25. [PMID: 25999410 DOI: 10.3174/ajnr.a4363] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 01/20/2015] [Indexed: 01/07/2023]
Abstract
BACKGROUND AND PURPOSE Treatment strategies in acute ischemic stroke aim to curtail ischemic progression. Emerging paradigms propose patient subselection using imaging biomarkers derived from CT, CTA, and CT perfusion. We evaluated the performance of a fully-automated computational tool, hypothesizing enhancements compared with qualitative approaches. The correlation between imaging variables and clinical outcomes in a cohort of patients with acute ischemic stroke is reported. MATERIALS AND METHODS Sixty-two patients with acute ischemic stroke and MCA or ICA occlusion undergoing multidetector CT, CTA, and CTP were retrospectively evaluated. CTP was processed on a fully operator-independent platform (RApid processing of PerfusIon and Diffusion [RAPID]) computing automated core estimates based on relative cerebral blood flow and relative cerebral blood volume and hypoperfused tissue volumes at varying thresholds of time-to-maximum. Qualitative analysis was assigned by 2 independent reviewers for each variable, including CT-ASPECTS, CBV-ASPECTS, CBF-ASPECTS, CTA collateral score, and CTA clot burden score. Performance as predictors of favorable clinical outcome and final infarct volume was established for each variable. RESULTS Both RAPID core estimates, CT-ASPECTS, CBV-ASPECTS, and clot burden score correlated with favorable clinical outcome (P < .05); CBF-ASPECTS and collateral score were not significantly associated with favorable outcome, while hypoperfusion estimates were variably associated, depending on the selected time-to-maximum thresholds. Receiver operating characteristic analysis demonstrated disparities among tested variables, with RAPID core and hypoperfusion estimates outperforming all qualitative approaches (area under the curve, relative CBV = 0.86, relative CBF = 0.81; P < .001). CONCLUSIONS Qualitative approaches to acute ischemic stroke imaging are subject to limitations due to their subjective nature and lack of physiologic information. These findings support the benefits of high-speed automated analysis, outperforming conventional methodologies while limiting delays in clinical management.
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Affiliation(s)
- S Dehkharghani
- From the Departments of Radiology and Imaging Sciences (S.D., L.S.A., J.W.A., D.Q.)
| | - R Bammer
- Department of Radiology (R.B.), Stanford University Hospital, Stanford, California
| | - M Straka
- Institut für Radiologie und Nuklearmedizin (M.S.), Kantonsspital Winterthur, Winterthur, Switzerland
| | - L S Albin
- From the Departments of Radiology and Imaging Sciences (S.D., L.S.A., J.W.A., D.Q.)
| | - O Kass-Hout
- Department of Neurology (O.K.-H.), Catholic Health System, Buffalo, New York
| | - J W Allen
- From the Departments of Radiology and Imaging Sciences (S.D., L.S.A., J.W.A., D.Q.)
| | - S Rangaraju
- Neurology (S.R., M.J.W., F.N.), Emory University Hospital, Atlanta, Georgia
| | - D Qiu
- From the Departments of Radiology and Imaging Sciences (S.D., L.S.A., J.W.A., D.Q.)
| | - M J Winningham
- Neurology (S.R., M.J.W., F.N.), Emory University Hospital, Atlanta, Georgia
| | - F Nahab
- Neurology (S.R., M.J.W., F.N.), Emory University Hospital, Atlanta, Georgia
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Dehkharghani S, Mao H, Howell L, Zhang X, Pate KS, Magrath PR, Tong F, Wei L, Qiu D, Fleischer C, Oshinski JN. Proton resonance frequency chemical shift thermometry: experimental design and validation toward high-resolution noninvasive temperature monitoring and in vivo experience in a nonhuman primate model of acute ischemic stroke. AJNR Am J Neuroradiol 2015; 36:1128-35. [PMID: 25655874 DOI: 10.3174/ajnr.a4241] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 11/27/2014] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Applications for noninvasive biologic temperature monitoring are widespread in biomedicine and of particular interest in the context of brain temperature regulation, where traditionally costly and invasive monitoring schemes limit their applicability in many settings. Brain thermal regulation, therefore, remains controversial, motivating the development of noninvasive approaches such as temperature-sensitive nuclear MR phenomena. The purpose of this work was to compare the utility of competing approaches to MR thermometry by using proton resonance frequency chemical shift. We tested 3 methodologies, hypothesizing the feasibility of a fast and accurate approach to chemical shift thermometry, in a phantom study at 3T. MATERIALS AND METHODS A conventional, paired approach (difference [DIFF]-1), an accelerated single-scan approach (DIFF-2), and a new, further accelerated strategy (DIFF-3) were tested. Phantom temperatures were modulated during real-time fiber optic temperature monitoring, with MR thermometry derived simultaneously from temperature-sensitive changes in the water proton chemical shift (∼0.01 ppm/°C). MR thermometry was subsequently performed in a series of in vivo nonhuman primate experiments under physiologic and ischemic conditions, testing its reproducibility and overall performance. RESULTS Chemical shift thermometry demonstrated excellent agreement with phantom temperatures for all 3 approaches (DIFF-1: linear regression R(2) = 0.994; P < .001; acquisition time = 4 minutes 40 seconds; DIFF-2: R(2) = 0.996; P < .001; acquisition time = 4 minutes; DIFF-3: R(2) = 0.998; P < .001; acquisition time = 40 seconds). CONCLUSIONS These findings confirm the comparability in performance of 3 competing approaches to MR thermometry and present in vivo applications under physiologic and ischemic conditions in a primate stroke model.
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Affiliation(s)
- S Dehkharghani
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
| | - H Mao
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
| | - L Howell
- Yerkes National Primate Research Center (L.H., X.Z.), Emory University, Atlanta, Georgia
| | - X Zhang
- Yerkes National Primate Research Center (L.H., X.Z.), Emory University, Atlanta, Georgia
| | - K S Pate
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
| | - P R Magrath
- Department of Biomedical Engineering (P.R.M.), Northwestern University, Evanston, Illinois
| | - F Tong
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
| | - L Wei
- Department of Biomedical Engineering (L.W., C.F.), Emory University-Georgia Institute of Technology, Atlanta, Georgia
| | - D Qiu
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
| | - C Fleischer
- Department of Biomedical Engineering (L.W., C.F.), Emory University-Georgia Institute of Technology, Atlanta, Georgia
| | - J N Oshinski
- From the Department of Radiology and Imaging Sciences (S.D., H.M., K.S.P., F.T., D.Q., J.N.O.), Emory University Hospital, Atlanta, Georgia
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Sun J, Hu W, Zhou R, Wang L, Wang X, Wang Q, Feng Z, Li Y, Qiu D, He G, Yang G. The Brachypodium distachyon BdWRKY36 gene confers tolerance to drought stress in transgenic tobacco plants. Plant Cell Rep 2015; 34:23-35. [PMID: 25224555 DOI: 10.1007/s00299-014-1684-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 09/03/2014] [Accepted: 09/05/2014] [Indexed: 05/27/2023]
Abstract
KEY MESSAGE The expression of BdWRKY36 was upregulated by drought treatment. BdWRKY36 -overexpressing transgenic tobacco increased drought tolerance by controlling ROS homeostasis and regulating transcription of stress related genes. WRKY transcription factor plays important roles in plant growth, development and stress response. However, the function of group IIe WRKYs is less known. In this study, we cloned and characterized a gene of group IIe WRKY, designated as BdWRKY36, from Brachypodium distachyon. Transient expression of BdWRKY36 in onion epidermal cell suggested its localization in the nucleus. Transactivation assay revealed that the C-terminal region, instead of full length BdWRKY36, had transcriptional activity. BdWRKY36 expression was upregulated by drought. Overexpression of BdWRKY36 in transgenic tobacco plants resulted in enhanced tolerance to drought stress. Physiological-biochemical indices analyses showed that BdWRKY36-overexpressing tobacco lines had lesser ion leakage (IL) and reactive oxygen species (ROS) accumulation, but higher contents of chlorophyll, relative water content (RWC) and activities of antioxidant enzyme than that in control plants under drought condition. Meanwhile expression levels of some ROS-scavenging and stress-responsive genes were upregulated in BdWRKY36-overexpressing tobacco lines under drought stress. These results demonstrate that BdWRKY36 functions as a positive regulator of drought stress response by controlling ROS homeostasis and regulating transcription of stress related genes.
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Affiliation(s)
- Jiutong Sun
- The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science & Technology, Wuhan, 430074, China,
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Kokabi N, Camacho J, Xing M, Kitajima H, Qiu D, Mittal P, Kim H. MRapparent diffusion coefficient quantification as an imaging biomarker for anatomic response of unresectable hepatocellular carcinoma to doxorubicin drug-eluting beads chemoembolization. J Vasc Interv Radiol 2014. [DOI: 10.1016/j.jvir.2013.12.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Qiu D, Chan GCF, Chu J, Chan Q, Ha SY, Moseley ME, Khong PL. MR quantitative susceptibility imaging for the evaluation of iron loading in the brains of patients with β-thalassemia major. AJNR Am J Neuroradiol 2014; 35:1085-90. [PMID: 24578278 DOI: 10.3174/ajnr.a3849] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND PURPOSE Patients with β-thalassemia require blood transfusion to prolong their survival, which could cause iron overload in multiple organs, including the heart, liver, and brain. In this study, we aimed to quantify iron loading in the brains of patients with β-thalassemia major through the use of MR quantitative susceptibility imaging. MATERIALS AND METHODS Thirty-one patients with thalassemia with a mean (± standard deviation) age of 25.3 (±5.9) years and 33 age-matched healthy volunteers were recruited and underwent MR imaging at 3T. Quantitative susceptibility images were reconstructed from a 3D gradient-echo sequence. Susceptibility values were measured in the caudate nucleus, putamen, globus pallidus, red nucleus, substantia nigra, dentate nucleus, and choroid plexus. General linear model analyses were performed to compare susceptibility values of different ROIs between the patients with thalassemia and healthy volunteers. RESULTS Of the 31 patients, 27 (87.1%) had abnormal iron deposition in one of the ROIs examined. Significant positive age effect on susceptibility value was found in the putamen, dentate nucleus, substantia nigra, and red nucleus (P = .002, P = .017, P = .044, and P = .014, respectively) in the control subjects. Compared with healthy control subjects, patients with thalassemia showed significantly lower susceptibility value in the globus pallidus (P < .001) and substantia nigra (P = .003) and significantly higher susceptibility value in the red nucleus (P = .021) and choroid plexus (P < .001). CONCLUSIONS A wide range of abnormal susceptibility values, indicating iron overloading or low iron content, was found in patients with thalassemia. MR susceptibility imaging is a sensitive method for quantifying iron concentration in the brain and can be used as a potentially valuable tool for brain iron assessment.
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Affiliation(s)
- D Qiu
- From the Departments of Diagnostic Radiology (D.Q, P.-L.K.)Department of Radiology and Imaging Sciences (D.Q.), Emory University, Atlanta, Georgia
| | - G C-F Chan
- Pediatrics and Adolescent Medicine (G.C.-F.C., S.-Y.H.), The University of Hong Kong, Hong Kong, China
| | - J Chu
- Department of Radiology (J.C.), First Affiliated Hospital of Sun Yat Sen University, Guangzhou, China
| | - Q Chan
- Philips Healthcare Hong Kong (Q.C.), Hong Kong, China
| | - S-Y Ha
- Pediatrics and Adolescent Medicine (G.C.-F.C., S.-Y.H.), The University of Hong Kong, Hong Kong, China
| | - M E Moseley
- Department of Radiology (M.E.M.), Stanford University, Stanford, California
| | - P-L Khong
- From the Departments of Diagnostic Radiology (D.Q, P.-L.K.)
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Christen T, Pannetier NA, Ni WW, Qiu D, Moseley ME, Schuff N, Zaharchuk G. MR vascular fingerprinting: A new approach to compute cerebral blood volume, mean vessel radius, and oxygenation maps in the human brain. Neuroimage 2013; 89:262-70. [PMID: 24321559 DOI: 10.1016/j.neuroimage.2013.11.052] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 11/22/2013] [Accepted: 11/25/2013] [Indexed: 11/29/2022] Open
Abstract
In the present study, we describe a fingerprinting approach to analyze the time evolution of the MR signal and retrieve quantitative information about the microvascular network. We used a Gradient Echo Sampling of the Free Induction Decay and Spin Echo (GESFIDE) sequence and defined a fingerprint as the ratio of signals acquired pre- and post-injection of an iron-based contrast agent. We then simulated the same experiment with an advanced numerical tool that takes a virtual voxel containing blood vessels as input, then computes microscopic magnetic fields and water diffusion effects, and eventually derives the expected MR signal evolution. The parameter inputs of the simulations (cerebral blood volume [CBV], mean vessel radius [R], and blood oxygen saturation [SO2]) were varied to obtain a dictionary of all possible signal evolutions. The best fit between the observed fingerprint and the dictionary was then determined by using least square minimization. This approach was evaluated in 5 normal subjects and the results were compared to those obtained by using more conventional MR methods, steady-state contrast imaging for CBV and R and a global measure of oxygenation obtained from the superior sagittal sinus for SO2. The fingerprinting method enabled the creation of high-resolution parametric maps of the microvascular network showing expected contrast and fine details. Numerical values in gray matter (CBV=3.1±0.7%, R=12.6±2.4μm, SO2=59.5±4.7%) are consistent with literature reports and correlated with conventional MR approaches. SO2 values in white matter (53.0±4.0%) were slightly lower than expected. Numerous improvements can easily be made and the method should be useful to study brain pathologies.
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Affiliation(s)
- T Christen
- Department of Radiology, Stanford University, Stanford, CA, USA.
| | - N A Pannetier
- Center for Imaging of Neurodegenerative Diseases, Veterans Affairs Medical Centre, San Francisco, USA; Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - W W Ni
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - D Qiu
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - M E Moseley
- Department of Radiology, Stanford University, Stanford, CA, USA
| | - N Schuff
- Center for Imaging of Neurodegenerative Diseases, Veterans Affairs Medical Centre, San Francisco, USA; Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - G Zaharchuk
- Department of Radiology, Stanford University, Stanford, CA, USA
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Mito A, Arata N, Jwa S, Sakamoto N, Qiu D, Murashima A, Ichihara A, Matsuoka R, Sekizawa A, Ohya Y, Kitagawa M. PP104. Pregnancy-induced hypertension is a strong risk factor for hypertension just 5 years after delivery: A double cohort study at the National Center for Child Health and Development and Showa University Hospital, Tokyo. Pregnancy Hypertens 2012; 2:295-6. [DOI: 10.1016/j.preghy.2012.04.215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Narita M, Qiu D, Hamaguchi M, Doi M, Futamura M, Sakamoto N, Saito H, Ohya Y. Maternal Diet during Pregnancy and Wheeze and Eczema in Infants; the Japanese Birth Cohort (T-CHILD) Study. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hou L, Zhou X, Chen Y, Qiu D, Zhu L, Wang J. Thyrotropin-releasing hormone causes a tonic excitatory postsynaptic current and inhibits the phasic inspiratory inhibitory inputs in inspiratory-inhibited airway vagal preganglionic neurons. Neuroscience 2011; 202:184-91. [PMID: 22198018 DOI: 10.1016/j.neuroscience.2011.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Revised: 10/29/2011] [Accepted: 12/03/2011] [Indexed: 11/17/2022]
Abstract
The airway vagal preganglionic neurons (AVPNs) in the external formation of the nucleus ambiguus (eNA), which include the inspiratory-activated AVPNs (IA-AVPNs) and inspiratory-inhibited AVPNs (II-AVPNs), predominate in the control of the trachea and bronchia. The AVPNs receive particularly dense inputs from terminals containing thyrotropin-releasing hormone (TRH). TRH microinjection into the nucleus ambiguus (NA) caused constriction of the tracheal smooth muscles. However, it is unknown whether TRH affects all subtypes of the AVPNs in the eNA, and as a result affects the control of all types of target tissues in the airway (smooth muscles, submucosal glands, and blood vessels). It is also unknown how TRH affects the AVPNs at neuronal and synaptic levels. In this study, the AVPNs in the eNA were retrogradely labeled from the extrathoracic trachea, the II-AVPNs were identified in rhythmically firing brainstem slices, and the effects of TRH were examined using patch-clamp. TRH (100 nmol L(-1)) enhanced both the rhythm and the intensity of the hypoglossal bursts, and caused a tonic excitatory inward current in the II-AVPNs at a holding voltage of -80 mV. The frequency of the spontaneous excitatory postsynaptic currents (EPSCs) in the II-AVPNs, which showed no respiratory-related change in a respiratory cycle, was not significantly changed by TRH. At a holding voltage of -50 mV, the II-AVPNs showed both spontaneous and phasic inspiratory (outward) inhibitory postsynaptic currents (IPSCs). TRH had no effect on the spontaneous IPSCs but significantly attenuated the phasic inspiratory outward currents, in both the amplitude and area. After focal application of strychnine, an antagonist of glycine receptors, to the II-AVPNs, the spontaneous IPSCs were extremely scarce and the phasic inspiratory inhibitory currents were abolished; and further application of TRH had no effect on these currents. Under current clamp configuration, TRH caused a depolarization and increased the firing rate of the II-AVPNs during inspiratory intervals. These results demonstrate that TRH affects the II-AVPNs both postsynaptically via a direct excitatory current and presynaptically via attenuation of the phasic glycinergic synaptic inputs.
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Affiliation(s)
- L Hou
- The State Key Laboratory of Medical Neurobiology and Institute of Brain Sciences, Fudan University Shanghai Medical College, 138 Yi-Xue-Yuan Road, Shanghai 200032, PR China
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Tang Y, Bian Z, Zhao L, Liu Y, Liang S, Wang Q, Han X, Peng Y, Chen X, Shen L, Qiu D, Li Z, Ma X. Interleukin-17 exacerbates hepatic steatosis and inflammation in non-alcoholic fatty liver disease. Clin Exp Immunol 2011; 166:281-90. [PMID: 21985374 DOI: 10.1111/j.1365-2249.2011.04471.x] [Citation(s) in RCA: 220] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Mechanisms associated with the progression of simple steatosis to non-alcoholic fatty liver disease (NAFLD) remain undefined. Regulatory T cells (T(regs)) play a critical role in regulating inflammatory processes in non-alcoholic steatohepatitis (NASH) and because T helper type 17 (Th17) functionally oppose T(reg)-mediated responses, this study focused on characterizing the role of Th17 cells using a NAFLD mouse model. C57BL/6 mice were fed either a normal diet (ND) or high fat (HF) diet for 8 weeks. Mice in the HF group had a significantly higher frequency of liver Th17 cells compared to ND-fed mice. Neutralization of interleukin (IL)-17 in HF mice ameliorated lipopolysaccharide (LPS)-induced liver injury reflected by decreased serum alanine aminotransferase (ALT) levels and reduced inflammatory cell infiltrates in the liver. In vitro, HepG2 cells cultured in the presence of free fatty acids (FFA; oleic acid and palmitic acid) for 24 h and IL-17 developed steatosis via insulin-signalling pathway interference. IL-17 and FFAs synergized to induce IL-6 production by HepG2 cells and murine primary hepatocytes which, in combination with transforming growth factor (TGF-β), expanded Th17 cells. It is likely that a similar process occurs in NASH patients, as there were significant levels of IL-17(+) cell infiltrates in NASH patient livers. The hepatic expression of Th17 cell-related genes [retinoid-related orphan receptor gamma (ROR)γt, IL-17, IL-21 and IL-23] was also increased significantly in NASH patients compared to healthy controls. Th17 cells and IL-17 were associated with hepatic steatosis and proinflammatory response in NAFLD and facilitated the transition from simple steatosis to steatohepatitis. Strategies designed to alter the balance between Th17 cells and T(regs) should be explored as a means of preventing progression to NASH and advanced liver diseases in NAFLD patients.
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Affiliation(s)
- Y Tang
- Department of Gastroenterology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Digestive Disease, Shanghai, China
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Qiu D, Sakamoto N, Arata N, Ohya Y. P1-297 Maternal characteristics in relation to low birth weight infants in a Japanese cohort study. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976e.89] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Abstract
AIMS To determine the global transcriptional response of Bacillus subtilis to an antimicrobial agent, xenocoumacin 1 (Xcn1). METHODS AND RESULTS Subinhibitory concentration of Xcn1 applied to B. subtilis was measured according to Hutter's method for determining optimal concentrations. cDNA microarray technology was used to study the global transcriptional response of B. subtilis to Xcn1. Real-time RT-PCR was employed to verify alterations in the transcript levels of six genes. The subinhibitory concentration was determined to be 1 μg ml(-1). The microarray data demonstrated that Xcn1 treatment of B. subtilis led to more than a 2.0-fold up-regulation of 480 genes and more than a 2.0-fold down-regulation of 479 genes (q ≤ 0.05). CONCLUSIONS The transcriptional responses of B. subtilis to Xcn1 were determined, and several processes were affected by Xcn1. Additionally, cluster analysis of gene expression profiles after treatment with Xcn1 or 37 previously studied antibiotics indicated that Xcn1 has similar mechanisms of action to protein synthesis inhibitors. SIGNIFICANCE AND IMPACT OF THE STUDY These microarray data showed alterations of gene expression in B. subtilis after exposure to Xcn1. From the results, we identified various processes affected by Xcn1. This study provides a whole-genome perspective to elucidate the action of Xcn1 as a potential antimicrobial agent.
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Affiliation(s)
- T Zhou
- Key Laboratory of Biological Control, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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