1
|
Wei J, Zhu X, Sun AY, Yan X, Meng X, Ge S. Long non-coding RNA FGD5 antisense RNA 1 targets Baculovirus inhibitor 5 via microRNA-497-5p to alleviate calcific aortic valve disease. Clin Hemorheol Microcirc 2024; 86:285-302. [PMID: 37355887 DOI: 10.3233/ch-221692] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2023]
Abstract
Calcific aortic valve disease (CAVD) is featured by thickening and calcification of the aortic valve. Osteoblast differentiation is a crucial step in valve calcification. Long non-coding RNAs (LncRNAs) participate in the osteogenic differentiation of mesenchymal cells. However, the character of lncRNA FGD5 antisense RNA 1 (FGD5-AS1) in CAVD is uncertain. After collection of human aortic valve tissue samples, detection of FGD5-AS1, microRNA (miR)-497-5p and Baculovirus inhibitor 5 (BIRC5) was conducted. Valve mesenchymal cells were isolated from CAVD patients and induced to differentiate to osteoblasts, and transfected with FGD5-AS1, miR-497-5p and BIRC5 plasmids. Detection of the alkaline phosphatase activity was after osteogenic induction of human aortic valve interstitial cells (hAVICs); Detection of the degree of calcium nodules and osteoblast differentiation markers (RUNX2 and OPN) was conducted. After establishment of a mouse model of CAVD, detection of the thickness of aortic valve leaflets, and the degree of calcification of the valve leaflets, and evaluation of echocardiographic parameters were implemented. Experimental data manifested in CAVD patients, lncRNAFGD5-AS1 and BIRC5 were reduced, but miR-497-5p was elevated; Enhancing lncRNA FGD5-AS1 or repressing miR-497-5p mitigated CAVD by restraining osteogenic differentiation; LncRNA FGD5-AS1 sponged miR-497-5p to target BIRC5; Repressive BIRC5 turned around the therapeutic action of elevated FGD5-AS1 or depressed miR-497-5p on hAVICs; Enhancive FGD5-AS1 in vivo was available to reduce ApoE-/- mouse CAVD induced via high cholesterol diet. All in all, lncRNAFGD5-AS1 targets BIRC5 via miR-497-5p to alleviate CAVD.
Collapse
Affiliation(s)
- Jun Wei
- Department of Cardiovascular Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
- Department of Cardiovascular Surgery, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - XueShuang Zhu
- Department of Cardiovascular Surgery, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - AYu Sun
- Department of Cardiovascular Surgery, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - XiaoTian Yan
- Department of Cardiovascular Surgery, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Xing Meng
- Department of Cardiovascular Surgery, Yijishan Hospital of Wannan Medical College, Wuhu, China
| | - Shenglin Ge
- Department of Cardiovascular Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
| |
Collapse
|
2
|
Tan X, Yan X, Liu Y, Wu Y, Liu J, Mu M, Zhao J, Wang X, Li J, Wen L, Guo P, Zhou Z, Li X, Bao P. A case of human infection by H3N8 influenza virus. Emerg Microbes Infect 2022; 11:2214-2217. [PMID: 36000153 PMCID: PMC9542523 DOI: 10.1080/22221751.2022.2117097] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Xin Tan
- Department of pediatric, The First Hospital of Changsha, Hunan Province, 410005, People's Republic of China, No.311, Yingpan Road, Kaifu District, Changsha, China
| | - XiaoTian Yan
- Department of pediatric, The First Hospital of Changsha, Hunan Province, 410005, People's Republic of China, No.311, Yingpan Road, Kaifu District, Changsha, China
| | - Yang Liu
- Department of Paediatrics, Zhumadian Central Hospital, Zhonghua Road west Section 747th , Yicheng District, Zhumadian, 463000, P.R.China
| | - Ying Wu
- Department of Clinical laboratory, The First Hospital of Changsha China, No.311, Yingpan Road, Kaifu District, Changsha, China
| | - JiYang Liu
- Changsha Municipal Health Commission, Hunan Province, 410005, People's Republic of China
| | - Mi Mu
- Pulmonary and Critical Care Medicine Faculty, The Eighth Medical Center of Chinese PLA General Hospital, Heishanhu Road 17th, Haidian District, Beijing, 100093, P.R.China
| | - Jie Zhao
- Department of Psychiatry Ward 5th, Zhumadian Second People's Hospital, Xuesong Road East Section 51th, Yicheng District, Zhumadian, 463000, P.R.China
| | - XiangYun Wang
- Department of pediatric, The First Hospital of Changsha, Hunan Province, 410005, People's Republic of China, No.311, Yingpan Road, Kaifu District, Changsha, China
| | - JieQiong Li
- Department of pediatric, The First Hospital of Changsha, Hunan Province, 410005, People's Republic of China, No.311, Yingpan Road, Kaifu District, Changsha, China
| | - Long Wen
- Department of pediatric, The First Hospital of Changsha, Hunan Province, 410005, People's Republic of China
| | - Peng Guo
- Department of Paediatrics, Zhumadian Central Hospital, Zhonghua Road west Section 747th , Yicheng District, Zhumadian, 463000, P.R.China
| | - ZhiGuo Zhou
- Department of pediatric, The First Hospital of Changsha, Hunan Province, 410005, People's Republic of China
| | - XiuBin Li
- Department of Urology, The Third Medical Center of Chinese PLA General Hospital, Yongding Road 69th, Haidian District, Beijing, 100039, P.R.China
| | - PengTao Bao
- Pulmonary and Critical Care Medicine Faculty, The Eighth Medical Center of Chinese PLA General Hospital, Heishanhu Road 17th, Haidian District, Beijing, 100093, P.R.China
| |
Collapse
|
3
|
Huang HJ, Yan XT, Wei ZY, Wang YZ, Chen JP, Li JM, Sun ZT, Zhang CX. Identification of Riptortus pedestris Salivary Proteins and Their Roles in Inducing Plant Defenses. Biology (Basel) 2021; 10:biology10080753. [PMID: 34439985 PMCID: PMC8389542 DOI: 10.3390/biology10080753] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 07/29/2021] [Accepted: 08/03/2021] [Indexed: 01/19/2023]
Abstract
Simple Summary The bean bug, Riptortus pedestris (Fabricius) is a notorious pest of soybean crops in Asia. During the feeding process, the bug secretes a mixture of salivary components, which play critical roles in the insect–plant interactions. In the present study, a total of 136 salivary proteins were identified by transcriptomic and proteomic approaches. Among them, five proteins (RpSP10.3, RpSP13.4, RpSP13.8, RpSP17.8, and RpSP10.2) were capable of inducing cell death, reactive oxygen species (ROS) burst, and hormone signal changes, indicating the potential roles of these proteins in eliciting plant defenses. Our results provide a good resource for future functional studies of bug salivary effectors and might be useful in pest management. Abstract The bean bug, Riptortus pedestris (Fabricius), is one of the most important soybean pests. It damages soybean leaves and pods with its piercing-sucking mouthparts, causing staygreen-like syndromes in the infested crops. During the feeding process, R. pedestris secretes a mixture of salivary proteins, which play critical roles in the insect–plant interactions and may be responsible for staygreen-like syndromes. The present study aimed to identify the major salivary proteins in R. pedestris saliva by transcriptomic and proteomic approaches, and to screen the proteins that potentially induced plant defense responses. Altogether, 136 salivary proteins were identified, and a majority of them were involved in hydrolase and binding. Additionally, R. pedestris saliva contained abundant bug-specific proteins with unknown function. Transient expression of salivary proteins in Nicotiana benthamiana leaves identified that RpSP10.3, RpSP13.4, RpSP13.8, RpSP17.8, and RpSP10.2 were capable of inducing cell death, reactive oxygen species (ROS) burst, and hormone signal changes, indicating the potential roles of these proteins in eliciting plant defenses. Our results will shed more light on the molecular mechanisms underlying the plant–insect interactions and are useful for pest management.
Collapse
|
4
|
Huang HJ, Ye YX, Ye ZX, Yan XT, Wang X, Wei ZY, Chen JP, Li JM, Sun ZT, Zhang CX. Chromosome-level genome assembly of the bean bug Riptortus pedestris. Mol Ecol Resour 2021; 21:2423-2436. [PMID: 34038033 DOI: 10.1111/1755-0998.13434] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 05/16/2021] [Accepted: 05/20/2021] [Indexed: 12/21/2022]
Abstract
The bean bug (Riptortus pedestris) causes great economic losses of soybeans by piercing and sucking pods and seeds. Although R. pedestris has become the focus of numerous studies associated with insect-microbe interactions, plant-insect interactions, and pesticide resistance, a lack of genomic resources has limited deeper insights. Here, we report the first R. pedestris genome at the chromosomal level using PacBio, Illumina, and Hi-C technologies. The assembled genome was 1.080 Gb in size with a contig N50 of 2.882 Mb. More than 96.3% of the total genome bases were successfully anchored to six unique chromosomes. Genome resequencing of male and female individuals and chromosomic staining demonstrated that the sex chromosome system of R. pedestris is XO, and the shortest chromosome is the X chromosome. In total, 19,026 protein-coding genes were predicted, 18,745 of which were validated as being expressed. Temporospatial expression of R. pedestris genes in six tissues and 37 development stages revealed 4,657 and 7,793 genes mainly expressed in gonads and egg periods, respectively. Evolutionary analysis demonstrated that R. pedestris and Oncopeltus fasciatus formed a sister group and split ∼80 million years ago (Mya). Additionally, a 5.04 Mb complete genome of symbiotic Serratia marcescens Rip1 was assembled, and the virulence factors that account for successful colonization in the host midgut were identified. The high-quality R. pedestris genome provides a valuable resource for further research, as well as for the pest management of bug pests.
Collapse
Affiliation(s)
- Hai-Jian Huang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Yu-Xuan Ye
- Institute of Insect Science, Zhejiang University, Hangzhou, China
| | - Zhuang-Xin Ye
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Xiao-Tian Yan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Xin Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Zhong-Yan Wei
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Jian-Ping Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Jun-Min Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Zong-Tao Sun
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, China
| | - Chuan-Xi Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Key Laboratory of Biotechnology in Plant Protection of MOA of China and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo, China
| |
Collapse
|
5
|
Huang HJ, Yan XT, Wang X, Qi YH, Lu G, Chen JP, Zhang CX, Li JM. Proteomic analysis of Laodelphax striatellus in response to Rice stripe virus infection reveal a potential role of ZFP36L1 in restriction of viral proliferation. J Proteomics 2021; 239:104184. [PMID: 33711487 DOI: 10.1016/j.jprot.2021.104184] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 02/18/2021] [Accepted: 03/01/2021] [Indexed: 10/21/2022]
Abstract
Persistent plant viruses multiply and circulate inside insect vectors following the route of midgut-hemolymph-salivary gland. Currently, how viruses interact with insect vectors after they are released into hemolymph is not entirely clear. In this study, we found that the hemolymph and fat body (HF) contained the highest Rice stripe virus (RSV) levels. Proteomic analysis on RSV-free and RSV-infected HF identified 156 differentially expressed proteins (DEPs), with the majority of them participating in metabolism, transportation, and detoxification. The RNA binding protein esf2 was the most downregulated protein. Knocking down the expression of esf2 did not influence the RSV burden, but caused the lethal effect to L. striatellus. In contrast, the mRNA decay protein ZFP36L1 was 69% more abundant upon RSV infection, and suppression of ZFP36L1 significantly increased the RSV burden. Our results reveal the potential role of ZFP36L1 in restricting the viral proliferation, and provide valuable clues for unravelling the interaction between RSV and L. striatellus in HF. SIGNIFICANCE: More than 76% of plant viruses are transmitted by insect vectors. For persistent propagative transmission, plant viruses multiply and circulate inside insects following the route of midgut-hemolymph-salivary gland. However, how viruses interact with vector insects after they are released into hemolymph is not entirely clear. Our study investigated the influence of rice stripe virus (RSV) on insect hemolymph and fat body by iTRAQ labeling method. Among the 156 differentially expressed proteins (DEPs) identified, two proteins associated with mRNA metabolism were selected for function analysis. We found that the mRNA decay activator protein ZFP36L1 influenced the RSV proliferation, and RNA binding protein esf2 caused the lethal effect to L. striatellus. Our results provide valuable clues for unveiling the interaction between RSV and L. striatellus, and might be useful in pest management.
Collapse
Affiliation(s)
- Hai-Jian Huang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo 315211, China
| | - Xiao-Tian Yan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo 315211, China
| | - Xin Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo 315211, China
| | - Yu-Hua Qi
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo 315211, China
| | - Gang Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo 315211, China
| | - Jian-Ping Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo 315211, China
| | - Chuan-Xi Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo 315211, China
| | - Jun-Min Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory of Biotechnology in Plant Protection of Ministry of Agriculture and Zhejiang Province, Institute of Plant Virology, Ningbo University, Ningbo 315211, China.
| |
Collapse
|
6
|
Zhang GW, Cheng RR, Wang HJ, Zhang Y, Li P, Yan XT, Zhang MN, Zhang XJ, Yang JP, Ma ZY. [Therapeutic effect of nivolumab on non-small-cell lung cancer patients with brain metastases: a retrospective study]. Zhonghua Zhong Liu Za Zhi 2020; 42:961-965. [PMID: 33256309 DOI: 10.3760/cma.j.cn112152-20190130-00059] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To preliminarily explore the treatment effect of nivolumab on Chinese non-small-cell lung cancer (NSCLC) patients with brain metastases, and further enrich the evidences of programmed death-ligand 1 (PD-1) monoclonal antibody in the treatment of NSCLC patients with brain metastases. Methods: The clinical and pathological data of 22 NSCLC patients with brain metastases treated with nivolumab were collected. The electronic imaging data were collected to confirm the treatment effect and time point of disease progression, and the survival data of the patients were obtained through follow-up. Results: Twenty-one patients were evaluated for the intracranial treatment effect. The intracerebral objective response rate (IORR) was 28.6%, the intracranial disease control rate (IDCR) was 47.6%. The median intracranial progression-free-survival (iPFS) of all the 22 patients was 5.2 months. Both the 1-year and 2-year survival rates were 56.7%. Conclusions: The treatment effect of PD-1 monoclonal antibody on NSCLC patients with brain metastases is similar as those without brain metastases.
Collapse
Affiliation(s)
- G W Zhang
- Department of Medical Oncology, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - R R Cheng
- The First Department of Respiratory, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - H J Wang
- Department of Medical Oncology, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Y Zhang
- Department of Biotherapy, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - P Li
- Department of Medical Oncology, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - X T Yan
- Department of Medical Oncology, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - M N Zhang
- Department of Medical Oncology, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - X J Zhang
- Department of Medical Oncology, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - J P Yang
- Department of Medical Oncology, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Z Y Ma
- Department of Medical Oncology, the Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450003, China
| |
Collapse
|
7
|
Yan XT, Bo T, Wang C, Li F, Bai L. [Heart rate variability in neonates with non-benign tachyarrhythmia]. Zhongguo Dang Dai Er Ke Za Zhi 2019; 21:474-478. [PMID: 31104666 PMCID: PMC7389426 DOI: 10.7499/j.issn.1008-8830.2019.05.015] [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] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 03/13/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVE To study heart rate variability (HRV) in neonates with non-benign tachyarrhythmia (NNTA) and the role of automatic nervous system (ANS) in NNTA. METHODS The neonates who were admitted to the Department of Neonatology, the Second Xiangya Hospital of Central South University, from January 2010 to June 2018 and were diagnosed with NNTA were enrolled as the NNTA group, and the neonates with sinus rhythm or accidental premature beats on ambulatory electrocardiography were enrolled as the control group. Each group was further subdivided into preterm and term subgroups. A retrospective analysis was performed for their clinical data. RESULTS A total of 27 NNTA neonates were enrolled, accounting for 0.28% (27/9 632) of all neonates hospitalized during the same period of time, and 53 neonates were enrolled in the control group. Compared with the preterm and term control subgroups, the preterm NNTA and term NNTA subgroups had a significant increase in the standard deviation of average RR interval (P<0.05). CONCLUSIONS Immature and unbalanced ANS function may play an important role in the development and progression of NNTA.
Collapse
Affiliation(s)
- Xiao-Tian Yan
- Division of Cardiology, Children's Medical Center, Second Xiangya Hospital, Central South University, Changsha 410011, China.
| | | | | | | | | |
Collapse
|
8
|
Yan XT, Zhuang M, Oakes JE, Lausch RN. Autocrine action of IL-10 suppresses proinflammatory mediators and inflammation in the HSV-1-infected cornea. J Leukoc Biol 2001; 69:149-57. [PMID: 11200059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
We investigated whether IL-10 produced endogenously would influence the development of HSV-1-induced acute corneal disease. Murine corneal epithelial cells and fibroblasts cultured in vitro expressed IL-10 mRNA and protein constitutively and also IL-10 receptors. Inclusion of IL-10 neutralizing antibody in the culture medium significantly (p<0.05) enhanced TNF-alpha-induced IL-6 and MIP-2 production by both corneal cell types. Endogenous IL-10 synthesis, which also occurred in vivo, was not modulated by Herpes virus infection or by depletion of neutrophils or natural killer cells. Antibody to IL-10 given locally at the time of HSV-1 intracorneal infection was associated with significantly (p<0.05) enhanced production of IL-6, MIP-2, and MIP-1alpha, increased neutrophil infiltration, and more extensive corneal disease. Similarly, mice with a disrupted IL-10 gene developed more severe corneal disease than wild-type controls. Collectively, these observations suggest that locally produced IL-10 can act in an autocrine/paracrine fashion to down-regulate the production of proinflammatory mediators and thus limit corneal inflammation.
Collapse
Affiliation(s)
- X T Yan
- Department of Miicrobiology and Immunology, School of Medicine, University of South Alabama, Mobile 36688, USA
| | | | | | | |
Collapse
|
9
|
Agrawal A, Adachi R, Tuvim M, Yan XT, Teich AH, Dickey BF. Gene structure and promoter function of murine Munc18-2, a nonneuronal exocytic Sec1 homolog. Biochem Biophys Res Commun 2000; 276:817-22. [PMID: 11027553 DOI: 10.1006/bbrc.2000.3513] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sec1 family proteins are regulators of diverse exocytic processes, from yeast to man. Three mammalian homologues, Munc18-1, -2, and -3 have been described. We have studied the structure and expression of the mouse Munc18-2 gene. The Munc18-2 gene comprises 19 exons whose sizes range from 50 to 158 bp, with a total gene size of approximately 11 kb. A single transcript of 2.1 kb is expressed in multiple non-neuronal murine tissues. Munc18-2 has a striking resemblance to Munc18-1 in structure despite only 60% sequence identity, suggesting a recent gene duplication event. Analysis of the region upstream of the transcription start site shows that Munc18-2 has a TATA-less promoter, with a consensus initiator (Inr) sequence at the start of transcription, several Sp1 binding sites, and strong promoter activity in RBL-2H3 mast cells. The region from +5 to -430 is more active than +5 to -800, suggesting upstream repressor elements.
Collapse
Affiliation(s)
- A Agrawal
- Department of Internal Medicine, Baylor College of Medicine, Houston, Texas, 77030, USA.
| | | | | | | | | | | |
Collapse
|
10
|
Yan XT, Tumpey TM, Kunkel SL, Oakes JE, Lausch RN. Role of MIP-2 in neutrophil migration and tissue injury in the herpes simplex virus-1-infected cornea. Invest Ophthalmol Vis Sci 1998; 39:1854-62. [PMID: 9727408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
PURPOSE Neutrophils are the most prominent cell type to migrate initially into the herpes simplex virus type 1 (HSV-1)-infected murine cornea. The role the C-X-C chemokines macrophage inflammatory protein (MIP)-2 and KC play in promoting this response was investigated. METHODS MIP-2 and KC were quantitated by enzyme-linked immunosorbent assay. Neutralization of endogenous MIP-2 and KC was achieved by subconjunctival inoculation of the appropriate antibody. Infected corneas were examined immunohistochemically for infiltrating leukocytes and assayed for myeloperoxidase activity using the dye o-dianisidine. Depletion of neutrophils and natural killer cells was accomplished by intraperitoneal administration of RB6-8C5 and asialo GM1 antibodies. RESULTS Herpes simplex virus type 1, when introduced intracorneally, stimulated the production of MIP-2 and KC, with peak synthesis occurring 48 hours after infection. Dose-response studies showed that exogenous MIP-2 was three to four times more potent than KC in attracting neutrophils as assessed by myeloperoxidase assay and immunohistochemical staining. Subconjunctival administration of neutralizing antibody to MIP-2 resulted in a sharp decrease in neutrophil infiltration and significantly reduced corneal opacity scores. In contrast, in vivo treatment with neutralizing antibody to KC did not suppress ocular inflammation. Additional studies indicated that MIP-2 and KC could be made by corneal epithelial cells and that production was promoted by interleukin (IL)-1. In vivo depletion of neutrophils sharply reduced MIP-2 levels but did not affect KC levels. CONCLUSIONS Collectively, the results suggest that MIP-2 is the major chemokine that attracts neutrophils into the HSV-1 infected cornea, where the cells directly or indirectly cause tissue injury. Resident corneal cells and inflammatory cells contribute to MIP-2 synthesis, whereas KC production seems to be confined largely to corneal cells.
Collapse
Affiliation(s)
- X T Yan
- Department of Microbiology and Immunology, School of Medicine, University of South Alabama, Mobile 36688, USA
| | | | | | | | | |
Collapse
|
11
|
Abstract
Herpes simplex virus type 1 (HSV-1) infection of the murine cornea results in a tissue-destructive inflammatory response. In this study we show that virus infection induces the synthesis of macrophage inflammatory protein-2 (MIP-2), MIP-1alpha, and monocyte chemoattractant protein-1 (MCP-1). However, only the production of MIP-2 and MIP-1alpha coincided with the influx of leukocytes into the cornea. IL-10 treatment markedly suppressed chemokine message and protein synthesis in vivo. Local administration of IL-10 also dramatically reduced the number of T cells and neutrophils migrating into the cornea and suppressed the severity of corneal disease. The inflammatory response could also be suppressed by the passive transfer of neutralizing antibody to MIP-1alpha but not MCP-1. We conclude that local IL-10 administration can suppress chemokine synthesis, thereby ameliorating corneal disease. Furthermore, our results indicate that MIP-1alpha plays a major role in herpes stromal keratitis development, whereas MCP-1 does not.
Collapse
Affiliation(s)
- T M Tumpey
- Department of Microbiology and Immunology, University of South Alabama, Mobile 36688-0002, USA
| | | | | | | | | |
Collapse
|
12
|
Su YH, Yan XT, Oakes JE, Lausch RN. Protective antibody therapy is associated with reduced chemokine transcripts in herpes simplex virus type 1 corneal infection. J Virol 1996; 70:1277-81. [PMID: 8551595 PMCID: PMC189943 DOI: 10.1128/jvi.70.2.1277-1281.1996] [Citation(s) in RCA: 80] [Impact Index Per Article: 2.9] [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] [Indexed: 01/31/2023] Open
Abstract
Herpes simplex virus type 1 (HSV-1) infection on the murine cornea induces an intense inflammatory response which can lead to blindness. This disease, known as herpes stromal keratitis, can be prevented by the timely passive transfer of monoclonal antibody specific for viral glycoprotein D (gD). Precisely how antibody treatment prevents excessive corneal inflammation is not known. In this study we investigated whether chemokine mRNA expression is inhibited by antibody treatment. Total cellular RNAs isolated from normal corneas and at various times after virus infection were analyzed via reverse transcription-PCR for mRNA coding for seven different chemokines. Constitutive levels of IP-10, KC, MIP-2, MCP-1, MIP-1 beta, and RANTES mRNA were detected in uninfected corneas of BALB/c mice. When the cornea was mechanically traumatized, message for all six chemokines was transiently elevated above constitutive levels. In contrast, HSV-1 infection resulted in prolonged enhanced chemokine message expression. The kinetics of mRNA accumulation was distinctive for each chemokine analyzed. MIP-1 alpha message, not detected constitutively, was not evident until day 7 postinfection. Administration of anti-HSV gD monoclonal antibody 1 day after infection was associated with reduced message for MIP-2, MCP-1, MIP-1 alpha, and MIP-1 beta. IP-10, KC, and RANTES messages were not altered. Collectively, our results suggest that anti-gD treatment may protect, at least in part, by inhibiting production of chemokines believed to promote inflammation.
Collapse
MESH Headings
- Animals
- Antibodies, Viral/administration & dosage
- Antibodies, Viral/immunology
- Base Sequence
- Chemokine CXCL10
- Chemokines/biosynthesis
- Chemokines/genetics
- Chemokines, CXC
- Cytokines/genetics
- Cytokines/metabolism
- DNA Primers
- Disease Models, Animal
- Herpesvirus 1, Human/genetics
- Herpesvirus 1, Human/immunology
- Humans
- Immunization, Passive
- Keratitis, Herpetic/immunology
- Mice
- Mice, Inbred BALB C
- Molecular Sequence Data
- RNA, Messenger/biosynthesis
- Viral Envelope Proteins/immunology
Collapse
Affiliation(s)
- Y H Su
- Department of Microbiology and Immunology, University of South Alabama, Mobile 36688, USA
| | | | | | | |
Collapse
|