Alcelaphine Herpesvirus-1 (Malignant Catarrhal Fever Virus) in Wildebeest Placenta: Genetic Variation of ORF50 and A9.5

A single round of infection was, thus, monitored over a 24-h period, using an MOI of 5, a statistical condition under which 99.3% of all cells are infected (Poisson distribution). They estimated the evolutionary rate to equal 3.9 × 10−9 substitutions per site per year. 1), which are important for GPCR-mediated signaling, receptor regulation, and intracellular targeting (36). The specificity for OvHV-2 arises from one of the primers (#556), which binds to a region of low homology between OvHV-2 and AlHV-1 [70]. Following electrophoresis, the gels were stained with Coomassie brilliant blue G (Sigma) and then subjected to automated band excision. OvHV-2 DNA was detected in the urogenital tract of all five sacrificed OvHV-2 positive rams, i.e., in the kidneys, the urinary bladder, the testis, the epididymis, the vesicular gland, the ampulla of the deferent duct, and the pars disseminata of the prostate gland (Table 2). Deteksi fenotipik subset limfosit pada limfoglandula sapi Bali yang terserang penyakit ingusan dengan teknik imunohistokimiawi.

J Gen Virol. Map produced using taluk centroids (Fig. Further, pan-genomes obtained by OMCL and COG algorithms produce clusters of 2,094 and 2,271 genes, respectively, whereas their intersection results in a cluster of 1,785 genes. Yes. SuperScript II Reverse Transcriptase (Applied Biosystems; Foster City, California, USA) was subsequently used for the synthesis of the first strand of the cDNA. At the end of the incubation period, the cells were harvested with trypsin-EDTA, washed with ice-cold PBS, and incubated overnight at 4°C in PBS containing 1% (wt/vol) paraformaldehyde and 0.05% (wt/vol) NP-40 (Fluka, Buchs, Switzerland). To confirm that direct sequencing of PCR products produced an accurate representation of the target sequence in vivo, PCR products of A9.5 from 4 samples were cloned into pGEM-T-Easy (Promega, Southampton, UK) and at least three clones representing each PCR product were sequenced.

For A9.5, a nested PCR approach was used with initial amplification performed in 25 μl reactions using 1 unit KOD Hot Start DNA polymerase (Merck, Feltham, UK), 50–100 ng of genomic DNA, and 5 pmol each of primers A9.5geneF and A9.5ex6R [24]. Cells were treated with OvHV-2 gB hyperimmune mouse serum (A, B, D, and E) or preimmune serum (C) as a primary antibody and an anti-mouse IgG conjugated to Alexa Fluor 568 as a secondary antibody. None of the rabbits inoculated with the chimeric virus or the parental virus developed fever or any other clinical sign and were healthy at the end of the experiment. (3). Haig, unpublished data). To address this we have constructed an A2 gene knockout AlHV-1 (A2ΔAlHV-1) and an A2 gene reinsertion (revertant) control (A2revAlHV-1) and compared these to wild-type AlHV-1 (wtAlHV-1) in a rabbit infection model of MCF to determine whether the A2 gene product is involved in the development of MCF in vivo. Replacement of AlHV-1 ORF8 by OvHV-2 ORF8 in the AlHV-1ΔORF73 BAC using the galK recombineering system.

The resulting pellet was resuspended in TNE buffer (20 mM Tris [pH 8], 100 mM NaCl, 1 mM EDTA) and loaded onto a 20 to 55% continuous sucrose gradient to further purify the virus. Clinically-susceptible species acquire the virus through inhalation, although ingestion of virus-laden secretions from contaminated foodstuffs or water has also been suggested as a route of transmission [34]. Sequencing reactions were performed using a commercial sequencing kitc according to the manufacturer’s instructions. Several authors previously described caprine herpesvirus 2 as a cause of MCF, but exclusively in members of the cervid family. However, only limited literature suggesting differences in immune responses between H-F and J breeds is currently available. B., H. These include the reptilian species Chelonid herpesvirus 5 and Chelonid herpesvirus 6 in the subfamily Alphaherpesvirinae [3, 11, 13, 17, 26], Phocid herpesvirus 2 in the subfamily Gammaherpesvirinae [10, 12], and Iguanid herpesvirus 2 in the family Herpesviridae [13, 25].

Between the NH2-terminal semaphorin domain and the transmembrane spanning region, the transmembrane semaphorins contain several alternative structural motifs, including either an Ig domain, a stretch of thrombospondin repeats, or a sequence with no obvious domain homology. Outside Africa, it is usually associated with contact between sheep and susceptible species. While the tegument component of alphaherpesviruses and betaherpesviruses is known to contain a number of gene products involved in assembly and egress of infectious virus (38) or modulation of the host cell environment upon initial infection (10, 13, 21, 25, 30, 40), little is known about the protein composition of the gammaherpesvirus tegument nor about the functions of gammaherpesvirus tegument proteins immediately after infection of the cell. Herpesviruses constitute an extensive family of DNA viruses distinguished by the large sizes of their linear double-stranded genomes, which range from ∼125 to ∼ 250 kbp, and a common structural design (17, 20, 33,41). Sheep are naturally infected by OvHV-2 which is responsible for the sheep-associated form of MCF when cross-species transmitted to susceptible hosts such as cattle.

Alcelaphine Herpesvirus-1 (Malignant Catarrhal Fever Virus) in Wildebeest Placenta: Genetic Variation of ORF50 and A9.5

To determine this window, HeLa cells were chosen because the infection proceeds relatively slowly in these cells compared to that in other cell types (data not shown). The validity of the clade nomenclature has been confirmed by the complete sequencing of an additional 21 VZV genomes by another group of investigators, who were not involved in the 2008 VZV nomenclature meeting (58). Furthermore, BILF1 is predicted to contain seven N-terminal glycosylation sites, which are important for GPCR-ligand interactions, receptor expression, and cellular localization (33), as well as four intracellular phosphorylation sites (Fig. The primers target a DNA fragment in the ORF 75 of OvHV-2, a gene coding for a viral tegument protein [70]. Twenty micrograms of sample was loaded onto 7 to 15% SDS-polyacrylamide gradient gels. In contrast, studies with other herpesviruses had indicated that they may well be excreted through the urinary pathway (6). 1996a.

The vascular lesions of a cow and bison with sheep-associated malignant catarrhal fever contain ovine herpesvirus 2infected CD8(+) T lymphocytes. Changing the distance coefficient P and increasing the cell size did not improve the results. Residual standard errors are reported on … A. Library preparation initially involved purification of mRNA from total RNA and fragmentation of the mRNA. Briefly, cells were pulse-labeled for 60 min at 37°C by the addition of BrdU (final concentration, 20 μM) to the culture medium. Electropherograms from each pair of sequencing reactions were assembled to produce sample consensus sequences for each gene segment amplified.


Amplification of ORF50 and A9.5 gene segments was attempted from genomic DNA samples in which AlHV-1 DNA had been detected by diagnostic nested PCR [33]. Representative fluorescence microscopy images of FMSKhTERT.1 cells harvested at 24 h posttransfection with AlHV-1ΔORF73/OvHV-2-ORF8 (A and C), pOvHV-2 ORF8 (B), or AlHV-1ΔORF73/ΔORF8 (D) DNA and untransfected cells (E). There is sufficient acute virus replication during the first days after infection in vivo to induce antibodies, and then the virus is simply cleared by the immune response and does not persist. LC-ESI-MS/MS.LC-ESI-MS/MS analysis was carried out essentially as described by Batycka et al. Russell, D.M. We hypothesise that the A2 gene product might be involved in MCF pathogenesis by way of dysregulation of host transcriptional pathways. Such studies are also essential to guide the development of efficacious MCF vaccines.

The viral particles were pelleted from the supernatant by centrifugation at 100,000 × g for 3 h at 4°C. Both viruses are shed into the environment via nasal, and perhaps ocular, secretions from their reservoirs [32,33]. A PCR assay was used for the detection of OvHV-2 nucleic acid using a 1-tube nested PCR (nPCR) approach.3 To verify the results, the obtained 273-bp nPCR amplicon was directly sequenced for 1 animal in 13 herds. Possibly, this is related to a different causative agent, as previous cases of MCF in buffalos were associated with OvHV-2, whereas in the present case, CpHV-2 was found in peripheral blood lymphocytes and in brain. Evidence also exists for transcriptional differences in pooled whole blood between Holstein and J [12]. CrossRef, PubMed Crawford, T. In addition, several new species were classified at the level of subfamily or family, with assignment to genera awaiting further data.

The secreted members of the semaphorin family contain a characteristic semaphorin domain at the NH2 terminus, followed by an immunoglobulin (Ig) domain and a stretch of basic amino acids in the carboxyl-terminal region. Malignant catarrhal fever has never been reported in any free-living wild animals in Africa, notwithstanding the fact that the reservoir host, namely wildebeest frequently roam with a wide variety of antelope. The tegument is the electron-dense component of the virion surrounding the capsid and interacting with the envelope (14, 38, 75). The small basic capsid protein sequences are highly divergent: whereas the HSV and CMV proteins bind only to hexons, difference mapping suggests that the KSHV protein, ORF65, binds around the tips of both hexons and pentons. In their natural host species, OvHV-2 and AlHV-1 cause no apparent disease. If the clinical trial and tissue study prove Pridgen’s theory correct, Innovative Med Concepts would then potentially approach pharmaceutical companies to gauge their interest in buying the patent and making the drugs available for fibromyalgia and a number of other conditions. One open reading frame (ORF), designated putative polypeptide 5, was altered on attenuation such that the 3′ sequence was lost.

Some protected animals showed transient low levels of viral DNA in blood samples and in one lymph node sample after challenge whereas viral DNA was detected in the blood and in lymph node samples of all animals with MCF. The virions egressed from the cell by budding from the plasma membrane or through channels of the Golgi apparatus or the endoplasmic reticulum. However testing under field conditions on an East African breed, the shorthorn zebu cross (SZC), gave a VE of 56% suggesting that FH and SZC cattle may respond differently to the vaccine.