Read by QxMD icon Read

crayfish hpt

Kantamas Apitanyasai, Chadanat Noonin, Anchalee Tassanakajon, Irene Söderhäll, Kenneth Söderhäll
Hemocyte homeostasis-associated-like protein (HHAP) in the freshwater crayfish Pacifastacus leniusculus has a distinct role from that of its homolog PmHHAP in the shrimp Penaeus monodon. Knockdown of PlHHAP in vitro using double-stranded RNA (dsRNA) had no effect on the cell morphology of hematopoietic tissue (HPT) cells. The total hemocyte number and caspase activity were unchanged after PlHHAP knockdown in vivo, in contrast to the results found in shrimp. Moreover, suppression of PlHHAP both in vitro and in vivo did not change the mRNA levels of some genes involved in hematopoiesis and hemocyte homeostasis...
September 20, 2016: Fish & Shellfish Immunology
Feng-Yu Lin, Yan Gao, Hao Wang, Qiu-Xia Zhang, Chang-Lin Zeng, Hai-Peng Liu
It is well-known that anti-lipopolysacchride factors (ALFs) are involved in the recognition and elimination of invading pathogens. In this study, the full-length ALF cDNA sequence of the red claw crayfish Cherax quadricarinatus (termed CqALF) was cloned from a suppression subtractive hybridization library constructed using red claw crayfish hematopoietic tissue cell (Hpt cell) cultures following challenge with white spot syndrome virus (WSSV). The full-length cDNA sequence of CqALF was 863 bp, and the open reading frame encoded 123 amino acids with a signal peptide in the N-terminus and a conserved LPS-binding domain...
October 2016: Fish & Shellfish Immunology
Rong-Yuan Chen, Kai-Li Shen, Zhen Chen, Wei-Wei Fan, Xiao-Lu Xie, Chuang Meng, Xue-Jiao Chang, Li-Bing Zheng, Joseph Jeswin, Cheng-Hua Li, Ke-Jian Wang, Hai-Peng Liu
White spot syndrome virus (WSSV) is a lethal pathogen of shrimp and many other crustaceans, including crayfish. However, the molecular mechanism underlying its cellular entry remains elusive due to the lack of shrimp cell lines for viral propagation. Crayfish hematopoietic tissue (Hpt) cell culture was recently established as a good model for WSSV infection study. Here, we showed that multiple endocytic routes, including clathrin-mediated endocytosis (CME), macropinocytosis and caveolae-mediated endocytosis, were indispensably employed for the viral entry into Hpt cell of the crayfish Cherax quadricarinatus...
2016: Scientific Reports
Kingkamon Junkunlo, Kenneth Söderhäll, Irene Söderhäll, Chadanat Noonin
Reactive oxygen species (ROS) serve as a prime signal in the commitment to hematopoiesis in both mammals and Drosophila In this study, the potential function of ROS during hematopoiesis in the crayfish Pacifastacus leniusculus was examined. The antioxidant N-acetylcysteine (NAC) was used to decrease ROS in both in vivo and in vitro experiments. An increase in ROS was observed in the anterior proliferation center (APC) after LPS injection. In the absence of NAC, the LPS-induced increase in ROS levels resulted in the rapid restoration of the circulating hemocyte number...
August 19, 2016: Journal of Biological Chemistry
Joseph Jeswin, Xiao-lu Xie, Qiao-lin Ji, Ke-jian Wang, Hai-peng Liu
To elucidate proteomic changes of Hpt cells from red claw crayfish, Cherax quadricarinatus, we have carried out isobaric tags for relative and absolute quantitation (iTRAQ) of cellular proteins at both early (1 hpi) and late stage (12 hpi) post white spot syndrome virus (WSSV) infection. Protein database search revealed 594 protein hits by Mascot, in which 17 and 30 proteins were present as differentially expressed proteins at early and late viral infection, respectively. Generally, these differentially expressed proteins include: 1) the metabolic process related proteins in glycolysis and glucogenesis, DNA replication, nucleotide/amino acid/fatty acid metabolism and protein biosynthesis; 2) the signal transduction related proteins like small GTPases, G-protein-alpha stimulatory subunit, proteins bearing PDZ- or 14-3-3-domains that help holding together and organize signaling complexes, casein kinase I and proteins of the MAP-kinase signal transduction pathway; 3) the immune defense related proteins such as α-2 macroglobulin, transglutaminase and trans-activation response RNA-binding protein 1...
March 2016: Fish & Shellfish Immunology
Junjun Wu, Fang Li, Jiajun Huang, Limei Xu, Feng Yang
Hemocytes are the major immune cells of crustaceans which are believed to be essential for the pathogenesis of white spot syndrome virus (WSSV) infection. Crayfish hemocytes and hematopoietic tissue (HPT) cells have been found to be susceptible to WSSV infection, but the procedure of WSSV infection to both cell types has not yet been carefully investigated. In this study, we analyzed the infection and proliferation of WSSV in crayfish hemocytes as well as HPT cells in detail through transmission electronic microscopy (TEM)...
March 2015: Fish & Shellfish Immunology
Netnapa Saelee, Chadanat Noonin, Benjamas Nupan, Kingkamon Junkunlo, Amornrat Phongdara, Xionghui Lin, Kenneth Söderhäll, Irene Söderhäll
Thymosin proteins are well known for their actin-binding activity. Thymosin beta 4 (Tβ4) has been associated with biological activities in tissue repair and cell migration via interaction with ATP-synthase in vertebrates, while the information of similar thymosin functions in invertebrates is limited. We have shown previously that ATP-synthase is present on the surface of crayfish hematopoietic tissue (HPT) cells, and that astakine 1 (Ast1, an invertebrate cytokine) was found to interact with this β-subunit of ATP synthase...
2013: PloS One
Hui Peng, Hai-Peng Liu, Bei Chen, Hua Hao, Ke-Jian Wang
The crab antimicrobial peptide scygonadin is confirmed to have antimicrobial activity against bacteria and it is probably associated with the reproductive immunity in Scylla paramamosain. To obtain large quantity of scygonadin for further biological assays, a 306 bp cDNA sequence encoding the mature peptide of scygonadin was cloned into a secretion vector of pPIC9K, and a high-level of the recombinant scygonadin was achieved in Pichia pastoris. The optimal expression condition was determined as incubation with 0...
March 2012: Protein Expression and Purification
Chenglin Wu, Kenneth Söderhäll, Irene Söderhäll
To isolate pathogen-associated molecular patterns (PAMPs)-binding molecules, the bacterium, Staphylococcus aureus was used as an affinity matrix to find bacteria-binding proteins in the plasma of the freshwater crayfish, Pacifastacus leniusculus. Two new bacteria-binding ficolin-like proteins (FLPs) were identified by 2-DE and MS analysis. The FLPs have a fibrinogen-related domain (FReD) in their C-terminal and a repeat region in their N-terminal regions with putative structural similarities to the collagen-like domain of vertebrate ficolins and mannose binding lectins (MBLs)...
June 2011: Proteomics
Hai-peng Liu, Rong-yuan Chen, Qiu-xia Zhang, Hui Peng, Ke-jian Wang
White spot syndrome virus (WSSV) is one of the most important viral pathogens in crustaceans. During WSSV infection, multiple cell signaling cascades are activated, leading to the generation of antiviral molecules and initiation of programmed cell death of the virus infected cells. To gain novel insight into cell signaling mechanisms employed in WSSV infection, we have used suppression subtractive hybridization (SSH) to elucidate the cellular response to WSSV challenge at the gene level in red claw crayfish haematopoietic tissue (Hpt) stem cell cultures...
July 2011: Developmental and Comparative Immunology
Xionghui Lin, Kenneth Söderhäll, Irene Söderhäll
A novel factor, named crustacean hematopoietic factor (CHF), was identified from a library of suppression subtractive hybridization with the aim to find downstream genes of an invertebrate cytokine, astakine 1, in the freshwater crayfish Pacifastacus leniusculus. CHF is a small cysteine-rich protein (∼9 kDa) with high similarity to the N-terminal region of vertebrate CRIM1 in containing an insulin growth factor binding protein variant motif with unknown function. CHF was found to be induced in primary cell cultures of crayfish hematopoietic tissue (Hpt) cells (precursors of crayfish blood cells) after treatment with astakine 1...
February 15, 2011: Journal of Immunology: Official Journal of the American Association of Immunologists
Apiruck Watthanasurorot, Pikul Jiravanichpaisal, Irene Söderhäll, Kenneth Söderhäll
The gC1qR/p32 protein is a multiple receptor for several proteins and pathogens. We cloned a gC1qR homologue in a crustacean, Pacifastacus leniusculus, and analyzed the expression of P. leniusculus C1qR (PlgC1qR) in various tissues. The gC1qR/p32 transcript was significantly enhanced by white spot syndrome virus (WSSV) infection 6 h after viral infection both in vitro in a hematopoietic tissue cell culture (Hpt) and in vivo compared to appropriate controls. Moreover, PlgC1qR silencing in both the Hpt cell culture and live crayfish enhanced the WSSV replication...
October 2010: Journal of Virology
Xionghui Lin, Young-A Kim, Bok Luel Lee, Kenneth Söderhäll, Irene Söderhäll
We have recently isolated an invertebrate cytokine from a freshwater crayfish, which we named astakine 1. Interestingly this protein is expressed exclusively in hemocytes and hematopoietic tissue and is essential for the release of new hemocytes into the open circulatory system of these animals. This astakine has a prokineticin (PK) domain but lacks the N-terminal AVIT amino acids and hence receptor binding may differ from vertebrate PKs. Accordingly, here we report that a receptor for astakine 1 on hematopoietic tissue (Hpt) cells is identical to the beta-subunit of F1ATP synthase...
April 15, 2009: Experimental Cell Research
Sirinit Tharntada, Sirikwan Ponprateep, Kunlaya Somboonwiwat, Haipeng Liu, Irene Söderhäll, Kenneth Söderhäll, Anchalee Tassanakajon
The anti-lipopolysaccharide factor (ALF) from the black tiger shrimp, Penaeus monodon, has been shown previously to exhibit a broad spectrum of activity against various strains of bacteria and fungi. Herein, the recombinant ALFPm3 (rALFPm3) protein was examined for its role in the defence against white spot syndrome virus (WSSV) infection in haematopoietic (Hpt) cell cultures of the freshwater crayfish, Pacifastacus leniusculus, as well as in live P. monodon shrimps. Incubation of Hpt cell cultures with a mixture of WSSV and rALFPm3 resulted in a dose-dependent decrease in VP28 gene expression levels, compared with those incubated with WSSV alone, with an rALFPm3 IC50 value lower than 2...
June 2009: Journal of General Virology
Xionghui Lin, Kenneth Söderhäll, Irene Söderhäll
BACKGROUND: Transglutaminases (TGases) form a group of enzymes that have many different substrates and among the most well known are fibrin for Factor XIIIa and the clotting protein in crustaceans. We also found that TGase is an abundant protein in the hematopoietic tissue (Hpt) cells of crayfish and hence we have studied the possible function of this enzyme in hematopoiesis. RESULTS: TGase is one of the most abundant proteins in the Hpt and its mRNA expression as well as enzyme activity is very high in the Hpt cells, lesser in the semi-granular hemocytes and very low in the granular cells...
2008: BMC Immunology
Chenglin Wu, Irene Söderhäll, Young-A Kim, Haipeng Liu, Kenneth Söderhäll
To identify proteins associated with development of different hemocyte types in the freshwater crayfish Pacifastacus leniusculus, 2-DE followed by MS analysis was carried out with hematopoietic tissue (Hpt) cells, semigranular cells (SGC) and granular cells (GC). Within the hemocyte lineages one two-domain Kazal proteinase inhibitor (KPI) was found to be specific for SGC, while a superoxide dismutase (SOD) was specific for GC at protein as well as at mRNA level. The proliferation cell nuclear antigen (PCNA) was detected at the mRNA level in Hpt cells only...
October 2008: Proteomics
Haipeng Liu, Pikul Jiravanichpaisal, Irene Söderhäll, Lage Cerenius, Kenneth Söderhäll
In a study of genes expressed differentially in the freshwater crayfish Pacifastacus leniusculus infected experimentally with the white spot syndrome virus (WSSV), one protein, known as antilipopolysaccharide factor (ALF), was chosen, among those whose transcript levels increased upon viral infection, for further studies. ALF RNA interference (RNAi) experiments in whole animals and in cell cultures indicated that ALF can protect against WSSV infection, since knockdown of ALF by RNAi specifically resulted in higher rates of viral propagation...
November 2006: Journal of Virology
Haipeng Liu, Irene Söderhäll
We report a novel and highly efficient dsRNA transfection system based on one of the nuclear proteins, namely, histone H2A. RT-PCR semi-quantitative analysis of silencing target gene shows that the transfection efficiency of histone H2A is higher than Effectene or liposome-based transfection systems. Importantly, the high efficiency of histone H2A was associated with very low toxicity to the transfected crayfish hematopoietic tissue (Hpt) cells. The non-toxicity, effectiveness and specificity of histone H2A as a transfection agent provides a cheap, simple, highly efficient and reproducible gene delivery system, particularly for the sensitive cell cultures of crustacean animals such as crayfish and shrimp...
2007: Developmental and Comparative Immunology
Pikul Jiravanichpaisal, Kenneth Söderhäll, Irene Söderhäll
Replication of White spot syndrome virus (WSSV) was investigated in haematopoietic cells (hpt cells) derived from haematopoietic tissue (hpt) of freshwater crayfish, Pacifastacus leniusculus. Temperature and type of inoculum for virus replication were studied. The cell culture remained viable at a wide range of temperatures ranging from 4 to 25 degrees C. WSSV replicated in cells, as evidenced by in situ hybridization, RT-PCR and by the presence of virions visualized with an electron microscope. Moreover, the results showed that the infectivity of WSSV to hpt cells is dependent on temperature and a supplemented growth factor (cytokine) astakine...
April 2006: Journal of General Virology
Pikul Jiravanichpaisal, Siripavee Sricharoen, Irene Söderhäll, Kenneth Söderhäll
WSSV particles were detected in separated granular cells (GCs) and semigranular cells (SGCs) by in situ hybridisation from WSSV-infected crayfish and the prevalence of WSSV-infected GCs was 5%, whereas it was 22% in SGCs. This indicates that SGCs are more susceptible to WSSV and that this virus replicated more rapidly in SGCs than in GCs and as a result the number of SGCs gradually decreased from the blood circulation. The effect of haemocyte lysate supernatant (HLS), containing the degranulation factor (peroxinectin), phorbol 12-myristate 13-acetate (PMA), the Ca(2+) ionophore A23187 on GCs from WSSV-infected and sham-injected crayfish was studied...
May 2006: Fish & Shellfish Immunology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"