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https://www.readbyqxmd.com/read/28916357/myeloid-leukemia-factor-functions-in-anti-wssv-immune-reaction-of-kuruma-shrimp-marsupenaeus-japonicus
#1
Xiao-Wu Feng, Li-Jie Huo, Jie-Jie Sun, Ji-Dong Xu, Guo-Juan Niu, Jin-Xing Wang, Xiu-Zhen Shi
Myeloid leukemia factor (MLF) plays an important role in development, cell cycle, myeloid differentiation, and regulates the RUNX transcription factors. However, the function of MLF in immunity is still unclear. In this study, an MLF was identified and characterized in kuruma shrimp Marsupenaeus japonicus, and named as MjMLF. The full-length cDNA of MjMLF contained 1111 nucleotides, which had an opening reading frame of 816 bp encoding a protein of 272 amino acids with an MLF1-interacting protein domain. MjMLF could be ubiquitously detected in different tissues of shrimp at the transcriptional level...
September 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28895356/-pathogenicity-of-white-spot-syndrome-virus-in-macrobrachium-nipponensis-via-different-infection-routes
#2
Rong Yin, Yuanyuan Guo, Zhangliang Wei, Dingji Shi, Peimin He, Rui Jia
Macrobrachium nipponensis is delicious and has high economic value, but its susceptibility to white-spot syndrome virus (WSSV) is unknown. Susceptibility, morbidity, and multiplication of WSSV in M. nipponense were studied by epidemiological survey, infection experiment and qPCR. M. nipponense was the natural host of WSSV, and the natural carrying rate was about 8.33%. M. nipponense could be infected with WSSV via oral administration, muscle injection and immersion, and the cumulative infection rate of 10 d exposure was 100%, and the cumulative mortality rates were 100%, 75% and 0%, respectively...
June 25, 2017: Sheng Wu Gong Cheng Xue Bao, Chinese Journal of Biotechnology
https://www.readbyqxmd.com/read/28889015/functional-characterization-of-a-reactive-oxygen-species-modulator-1-gene-in-litopenaeus-vannamei
#3
Hong-Hui He, Yi-Miao Chi, Kai Yuan, Xiao-Yun Li, Shao-Ping Weng, Jian-Guo He, Yi-Hong Chen
Reactive oxygen species (ROS) imparts a dual effect on multicellular organisms, wherein high levels are usually harmful, and low levels could facilitate in combating pathogenic microorganisms; therefore, the regulation of ROS production is critical. Previous studies have suggested that ROS contributes to resistance to the white spot syndrome virus (WSSV) or Vibrio alginolyticus in Litopenaeus vannamei. However, the regulation of ROS metabolism in L. vannamei remains elusive. In the present study, we proved that the overexpression of L...
September 6, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28882801/effect-of-immune-gene-silencing-in-wssv-infected-tiger-shrimp-penaeus-monodon
#4
M S Shekhar, A Gomathi, N K Dubey, K Vinaya Kumar, K K Vijayan
White spot syndrome virus, continues to cause huge economic loss to aquaculture industry. In the absence of effective therapeutics to control WSSV, it is important to understand the host pathogen interaction at the molecular level. Suppression subtractive hybridization (SSH) cDNA library was constructed which led to identification of several differentially expressed genes in response to WSSV infection in Penaeus monodon. The genes expressed in SSH cDNA library of shrimp gill and gut tissues belonged to a wide range of biological functions...
September 5, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28882789/litopenaeus-vannamei-activating-transcription-factor-6-alpha-gene-involvement-in-er-stress-response-and-white-spot-symptom-virus-infection
#5
Kai Yuan, Hong-Hui He, Chao-Zheng Zhang, Xiao-Yun Li, Shao-Ping Weng, Jian-Guo He, Yi-Hong Chen
A previous study found that inositol-requiring enzyme-1-X-box binding protein 1 (IRE1-XBP1) pathway and the protein kinase RNA (PKR)-like ER kinase-eIF2α (PERK-eIF2α) pathway of shrimp play roles in the unfolded protein response (UPR). And they also be proved that was involved in white spot symptom virus (WSSV) infection. Yet the functions of the third branch in shrimp UPR are still unclear. In this study, we showed that upon UPR activation, activating transcription factor 6 alpha (LvATF6α) of Litopenaeus vannamei was cleaved and transferred from the cytoplasm to the nucleus in 293T cells, indicating that the ATF6 pathway in shrimp is also a branch of UPR...
September 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28844966/lipopolysaccharide-specific-binding-c-type-lectin-with-one-crd-domain-from-fenneropenaeus-merguiensis-fmlc4-functions-as-a-pattern-recognition-receptor-in-shrimp-innate-immunity
#6
Prapaporn Utarabhand, Supattra Thepnarong, Phanthipha Runsaeng
In crustaceans, an innate immune system is solely required because they lack an adaptive immunity. One kind of pattern recognition receptors (PRRs) that plays a particular role in the innate immunity of aquatic shrimp is lectin. A new diverse C-type lectin (FmLC4) was cloned from the hepatopancreas of Fenneropenaeus merguiensis by using RT-PCR and 5' and 3' rapid amplification of cDNA ends approaches. A full-length FmLC4 cDNA comprises 706 bp with an open reading frame of 552 bp, encoding a peptide of 184 amino acids...
August 24, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28818614/the-transcription-of-atypical-protein-kinase-c-in-hemocytes-of-the-giant-freshwater-prawn-macrobrachium-rosenbergii-during-the-molt-stage-and-injection-of-pathogen-associated-compounds
#7
Yi-Chun Yeh, Chin-Chyuan Chang, Pai-Po Lee, Winton Cheng
Protein kinase C (PKC), which is involved in cell signaling pathways, comprises a family of serine/threonine kinases ubiquitously present in animals and its members are grouped on the basis of structural and activation characteristics into novel, classical, and atypical PKC forms. In this study, an atypical PKC of Macrobrachium rosenbergii, designated MraPKC, was successfully cloned, and its protein comprised structural domains similar to those of atypical PKC homologues, including the Phox and Bem1 (PB1) domain, a zinc finger phorbol-ester/DAG-type signature, protein kinase signatures, and a cAMP-dependent, cGMP-dependent, and PKC (AGC) kinase C-terminal domain...
August 14, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28792418/prevalence-diversity-and-co-occurrence-of-the-white-spot-syndrome-virus-monodon-baculovirus-and-penaeus-stylirostris-densovirus-in-wild-populations-of-penaeus-monodon-in-the-philippines
#8
Fredmoore L Orosco, Arturo O Lluisma
The farming of the black tiger shrimp Penaeus monodon in the Philippines relies on wild broodstock. PCR was thus used to determine the prevalence of white spot syndrome virus (WSSV), monodon baculovirus (MBV) and Penaeus stylirostris densovirus (PstDV) in a total of 178 shrimp from 6 geographically disparate locations where broodstock are captured for use in hatcheries. PCR amplicons were also sequenced to identify phylogenetic relationships of the virus haplotypes detected. Shrimp from southeastern Luzon (Camarines Norte) had the highest prevalence of each of the 3 viruses and were frequently co-infected with 2 or more viruses...
August 9, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28747797/molecular-characterization-of-viral-responsive-protein-15-and-its-possible-role-in-nuclear-export-of-virus-in-black-tiger-shrimp-penaeus-monodon
#9
Krisadaporn Jaturontakul, Thapanan Jatuyosporn, Pasunee Laohawutthichai, Sun-Yong Kim, Tomoyuki Mori, Premruethai Supungul, Toshio Hakoshima, Anchalee Tassanakajon, Kuakarun Krusong
A viral responsive protein 15 from Penaeus monodon (PmVRP15) has been reported to be important for white spot syndrome virus (WSSV) infection in vivo. This work aims to characterize PmVRP15 and investigate its possible role in nuclear import/export of the virus. Circular dichroism spectra showed that PmVRP15 contains high helical contents (82%). Analytical ultracentrifugation suggested that PmVRP15 could possibly form oligomers in solution. A subcellular fractionation study showed that PmVRP15 was found in heavy and light membrane fractions, indicating that PmVRP15 may be associated with endoplasmic reticulum...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28743627/characterization-of-a-novel-non-receptor-tyrosine-kinase-src-from-litopenaeus-vannamei-and-its-response-to-white-spot-syndrome-virus-infection
#10
Defu Yao, Lingwei Ruan, Jingxiang Xu, Hong Shi, Xun Xu
Src family kinases (SFKs), a class of non-receptor tyrosine kinases, mediate a wide aspect of cellular signaling pathways that regulate cell proliferation, differentiation, motility and survival. In this study, we identified and characterized for the first time a novel SFK homologue from Litopenaeus vannamei (designated as LvSrc). Sequence analysis showed that LvSrc had a high homology with the identified SFKs, especially those from invertebrates. LvSrc contained the conserved SH3, SH2 and tyrosine kinase domains, as well as the potential phosphorylation and lipid modification sites...
July 23, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28709908/variable-rna-expression-from-recently-acquired-endogenous-viral-elements-eve-of-white-spot-syndrome-virus-wssv-in-shrimp
#11
Heny Budi Utari, Chumporn Soowannayan, Timothy W Flegel, Boonsirm Whityachumnarnkul, Maleeya Kruatrachue
The viral accommodation hypothesis proposes that endogenous viral elements (EVE) from both RNA and DNA viruses are being continually integrated into the shrimp genome by natural host processes and that they can result in tolerance to viral infection by fortuitous production of antisense, immunospecific RNA (imRNA). Thus, we hypothesized that previously reported microarray results for the presence of white spot syndrome virus (WSSV) open reading frames (ORFs) formerly called 151, 366 and 427 in a domesticated giant tiger shrimp (Penaeus monodon) breeding stock might have represented expression from EVE, since the stock had shown uninterrupted freedom from white spot disease (WSD) for many generations...
July 11, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28705723/a-pacifastacus-leniusculus-serine-protease-interacts-with-wssv
#12
Enen Guo, Gül Gizem Korkut, Phattarunda Jaree, Irene Söderhäll, Kenneth Söderhäll
Serine proteases are involved in many critical physiological processes including virus spread and replication. In the present study, we identified a new clip-domain serine protease (PlcSP) in the crayfish Pacifastacus leniusculus hemocytes, which can interact with the White Spot Syndrome Virus (WSSV) envelope protein VP28. It was characterized by a classic clip domain with six strictly conserved Cys residues, and contained the conserved His-Asp-Ser (H-D-S) motif in the catalytic domain. Furthermore, signal peptide prediction revealed that it has a 16-residue secretion signal peptide...
July 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28689772/characterization-and-function-of-a-%C3%AE-catenin-homolog-from-litopenaeus-vannamei-in-wssv-infection
#13
Jiazhen Sun, Lingwei Ruan, Congzhao Zhou, Hong Shi, Xun Xu
As a conserved signaling pathway, Wnt/β-catenin signaling pathway participates in many physiological activities, including cell differentiation, apoptosis and so on. β-catenin is the key molecule of Wnt/β-catenin signaling pathway and plays a pivotal role. In this article, a β-catenin homolog from Litopenaeus vannamei (designed as Lv-β-catenin) was cloned and its role in WSSV infection was investigated. Sequence analysis suggested that Lv-β-catenin had characters of β-catenin family. Semi-quantitative RT-PCR showed that Lv-β-catenin transcripted in all detected tissues...
July 6, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28686185/the-roles-of-%C3%AE-integrin-of-chinese-shrimp-fenneropenaeus-chinensis-in-wssv-infection
#14
Xiaoqian Tang, Fude Zhai, Xiuzhen Sheng, Jing Xing, Wenbin Zhan
Our previous study demonstrated that an integrin β subunit of Chinese shrimp (Fenneropenaeus chinensis) (FcβInt) plays an important role in white spot syndrome virus (WSSV) infection. In the present work, in order to further elucidate the potential role of FcβInt in WSSV infection, the recombinant extracellular domain of β integringene of F. Chinensis (rFcβInt-ER) was expressed in Escherichia coli BL21 (DE3), and the eukaryotic expression plasmid PcDNA3.1-FcβInt-ER (PFcβInt-ER) was also constructed. Far-western blotting was performed to determine the binding specificity of rFcβInt-ER to WSSV envelope proteins, and results showed that rFcβInt-ER was able to specifically interact with rVP31, rVP37, rVP110 and rVP187...
July 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28676694/resonant-dipolar-coupling-of-microwaves-with-confined-acoustic-vibrations-in-a-rod-shaped-virus
#15
Chi-Kuang Sun, Yi-Chun Tsai, Yi-Jan E Chen, Tzu-Ming Liu, Hui-Yuan Chen, Han-Ching Wang, Chu-Fang Lo
In this letter, we treat a rod-shaped virus as a free homogenous nanorod and identify its confined acoustic vibration modes that can cause strong resonant microwave absorption through electric dipolar excitation with a core-shell charge distribution. They are found to be the n = 4N-2 modes of the longitudinal modes of the nanorods, where N is an integer starting from 1 and n is the mode order quantum number. This study was confirmed by measuring the microwave absorption spectra of white spot syndrome virus (WSSV), which is a rod-shaped virus...
July 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28648884/epigallocatechin-3-gallate-inhibit-replication-of-white-spot-syndrome-virus-in-scylla-paramamosain
#16
Zhi Wang, Baozhen Sun, Fei Zhu
Epigallocatechin-3-gallate (EGCG) has exhibited potential antibacterial and anticancer activities. In this study, we tested whether EGCG can protect the mud crab Scylla paramamosain against white spot syndrome virus (WSSV). Treatment with 1.5 mg/kg EGCG killed crab hemocytes but treatment with 1 mg/kg EGCG did not. Results of the virus challenge experiment confirmed that EGCG could enhance the survival rate of WSSV-challenged crabs, and treatment with 1 mg/kg EGCG significantly increased their resistance to WSSV compared with the control...
August 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28647845/recent-progress-in-the-development-of-white-spot-syndrome-virus-vaccines-for-protecting-shrimp-against-viral-infection
#17
REVIEW
Shuying Feng, Chen Wang, Shu Hu, Qiongya Wu, Aifang Li
White spot syndrome virus (WSSV) has been extensively investigated since the white spot disease outbreak in shrimp in 1990. These investigations have mainly focused on determining the function of viral structural proteins, and on utilizing the envelope proteins as subunit vaccines to protect the host. These studies have shown that a WSSV vaccine can be a practical and effective approach for controlling WSSV infection. The development of such a vaccine has become an intense focus of research in the field. This research has resulted in significant progress in the development of WSSV vaccines...
June 24, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28587833/an-update-on-mechanism-of-entry-of-white-spot-syndrome-virus-into-shrimps
#18
Arunima Kumar Verma, Shipra Gupta, Shivesh Pratap Singh, Naresh Sahebrao Nagpure
Host-parasite relationships can be best understood at the level of protein-protein interaction between host and pathogen. Such interactions are instrumental in understanding the important stages of life cycle of pathogen such as adsorption of the pathogen on host surface followed by effective entry of pathogen into the host body, movement of the pathogen across the host cytoplasm to reach the host nucleus and replication of the pathogen within the host. White Spot Disease (WSD) is a havoc for shrimps and till date no effective treatment is available against the disease...
August 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28579079/ontogenetic-changes-in-the-expression-of-immune-related-genes-in-response-to-immunostimulants-and-resistance-against-white-spot-syndrome-virus-in-litopenaeus-vannamei
#19
T Rajkumar, G Taju, S Abdul Majeed, M Sinwan Sajid, S Santhosh Kumar, S Sivakumar, S Thamizhvanan, S Vimal, A S Sahul Hameed
In recent years, researchers have focused on viral and plant immunostimulants which could have beneficial effects in disease prevention and control in shrimp culture. At present, the application of the recombinant VP28 protein (r-VP28) and herbal immunostimulant has been considered as a more effective approach to prevent white spot syndrome (WSS) by enhancing the immune response in shrimp. In the present study, expression of selected immune related genes in response to r-VP28 and herbal immunostimulant mix (HIM) were separately studied qualitatively and quantitatively by RT-PCR and real time PCR, respectively during ontogenetic development from nauplius to juvenile stage in Litopenaeus vannamei...
November 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28564581/identification-characterization-and-function-analysis-of-the-nf-%C3%AE%C2%BAb-repressing-factor-nkrf-gene-from-litopenaeus-vannamei
#20
Wei Qiu, Jian-Hui He, Hongliang Zuo, Shengwen Niu, Chaozheng Li, Shuang Zhang, Shaoping Weng, Jianguo He, Xiaopeng Xu
The NF-κB family transcription factors regulate a wide spectrum of biological processes, in particular immune responses. The studies in human suggest that the NF-κB repressing factor (NKRF) negatively regulates the activity of NF-κB through a direct protein-protein interaction. However, the function of NKRF has not been studied outside mammals up to now. The current study identified a NKRF gene (LvNKRF) from the Pacific white shrimp, Litopenaeus vannamei, which showed homology with NKRFs from insects, fishes and mammals...
May 28, 2017: Developmental and Comparative Immunology
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