Background: Spinal Cord Injury (SCI) is a major public health issue causing significant disability and economic burden. Current treatments primarily focus on mitigating secondary injury, with limited effective therapies available. This study explores the efficacy of the Granulocyte Colony-Stimulating Factor (G-CSF) in improving functional outcomes in acute SCI patients.
View Article and Find Full Text PDFLow molecular weight proteins, known as chemokines, facilitate the migration and localization of immune cells to the site of infection and injury. One of the first chemokines identified, CXCL8 functions as a key neutrophil activator, recruiting neutrophils to sites of inflammation. Several viral infections, including zoonotic coronaviruses and poxviruses, have been reported to induce the expression of CXCL8.
View Article and Find Full Text PDFDev Comp Immunol
December 2023
The Stimulator of Interferon Genes (STING, also known as MITA/ERYS/MPYS) is an adaptor molecule that plays a crucial role in the RLR pathway and responds to DNA and RNA viruses. In the present study, we have identified two novel isoforms of STING (the canonical form named as LcSTINGa and its alternative splicing isoform named as LcSTINGb) from teleost Lates calcarifer. LcSTINGa has an ORF of 1230 bp, encoding a 409 amino acid protein, while its alternative splicing variant, LcSTINGb, features an ORF of 987 bp, encoding 328 amino acids.
View Article and Find Full Text PDFViral infections activate pattern recognition receptors in the host, triggering an innate immune response that involves the production of interferons, which, in turn, stimulates the expression of antiviral effector genes. Viperin is one of the most highly induced interferon-stimulated genes and displays broad antiviral activity, especially against tick-borne viruses. Of late, camelid-borne zoonotic viruses have been on the rise in the Arabian Peninsula, but research into camelid antiviral effector genes has been limited.
View Article and Find Full Text PDFObjective: We identified two tripartite motif (TRIM) genes, LcTRIM21 and LcTRIM39, from the Asian Seabass Lates calcarifer, and examined their responses to experimental betanodavirus infection and stimulation with microbial pathogen-associated molecular patterns.
Methods: Genes encoding LcTRIM21 and LcTRIM39 were identified, cloned, and sequenced from the Asian Seabass. We analyzed the sequence using a variety of bioinformatics tools to determine protein structure, localization, and establish a phylogenetic tree.
The last two decades have seen the emergence of three highly pathogenic coronaviruses with zoonotic origins, which prompted immediate attention to the underlying cause and prevention of future outbreaks. Intensification of camel husbandry in the Middle East has resulted in increased human-camel interactions, which has led to the spread of potentially zoonotic viruses with human spillover risks like MERS-coronavirus, camelpox virus, etc. Type-I interferons function as the first line of defense against invading viruses and are pivotal for limiting viral replication and immune-mediated pathologies.
View Article and Find Full Text PDFFish Shellfish Immunol Rep
December 2022
Interferon Stimulated Gene (ISG)15 is a ubiquitin-like protein that is induced upon viral infections. Our study reports the identification of two homologues of ISG15 in the Asian seabass designated LcISG15A and LcISG15B. The cloned LcISG15A cDNA fragment contained a 474 bp ORF encoding a 157 amino acid protein whereas LcISG15B featured a 498 bp ORF encoding a slightly longer protein of 165 amino acids.
View Article and Find Full Text PDFThe host response to virus infection is mediated by the interferon system and its workhorse effector proteins like Interferon-stimulated genes (ISGs). Viperin is an interferon-inducible antiviral protein. In the present study, an antiviral radical SAM enzyme, viperin homologue, was cloned and characterised from teleost, Asian seabass (Lates calcarifer).
View Article and Find Full Text PDFThe COVID-19 pandemic is a wake-up call on the zoonotic viral spillover events and the need to be prepared for future outbreaks. Zoonotic RNA viruses like the Middle East respiratory syndrome coronavirus (MERS-CoV) are potential pathogens that could trigger the next pandemic. Dromedary camels are the only known animal source of MERS-CoV zoonotic infections, but little is known about the molecular antiviral response in this species.
View Article and Find Full Text PDFAccurate diagnosis at an early stage of infection is essential for the successful management of any contagious disease. The coronavirus disease 2019 (COVID-19), caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) virus is a pandemic that has affected 214 countries affecting more than 37.4 million people causing 1.
View Article and Find Full Text PDFInvestigations into the molecular immune response of dromedary camel, a key livestock species of the arid, have been limited due to the lack of species-specific reagents. Here we describe for the first time, the identification and characterization of type I IFNs of dromedary camel, which are the most important cytokines in the innate host immune response against viruses. We cloned camel IFN-α coding sequences and identified a total of eleven subtypes.
View Article and Find Full Text PDFIntroduction: There are few data on the frequency of virological remission in African individuals after treatment with antiretroviral therapy (ART) in primary HIV infection (PHI).
Methods: We studied participants (n = 82) from South Africa and Uganda in Short Pulse Antiretroviral Treatment at HIV-1 Seroconversion, the first trial of treatment interruption in African individuals with PHI randomized to deferred ART or 48 weeks of immediate ART. All were female and infected with non-B HIV subtypes, mainly C.
Interleukin-26 (IL-26) is a member of the IL-10 family of cytokines. Though conserved across vertebrates, the IL-26 gene is functionally inactivated in a few mammals like rat, mouse and horse. We report here the identification, isolation and cloning of the cDNA of IL-26 from the dromedary camel.
View Article and Find Full Text PDFThe mechanism by which type I interferon-mediated antiviral response is mounted by hosts against invading pathogen is an intriguing one. Of late, an endoplasmic reticulum transmembrane protein encoded by a gene called stimulator of interferon genes (STING) is implicated in the innate signalling pathways and has been identified and cloned in few mammalian species including human, mouse and pig. In this article, we report the identification of STING from three different species of a highly conserved family of mammals - the camelids.
View Article and Find Full Text PDFInterferon-gamma, a major immunomodulatory cytokine, of Indian water buffalo (Bubalus bubalis) was characterized at molecular level. Complementary DNA and essential promoter region were cloned and sequenced, and functional recombinant protein was expressed in bacterial system. The cDNA has 97.
View Article and Find Full Text PDFWe compared the gene, promoter and cDNA sequences, and the predicted protein structure of duck and quail interleukin-2 (IL-2), a major immunomodulatory cytokine, with the known sequences of other avian and human IL-2. Analysis of the gene organization showed significant similarity with the overall organization of mammalian IL-2 genes, with four exons and three introns and a very short 5' untranslated regions. The second intron was the biggest in all the IL-2 sequences.
View Article and Find Full Text PDFThe study describes the characterization of Interleukin-6 cDNA and essential promoter sequences of the Indian Water Buffalo (Bubalus bubalis) and expression of the recombinant IL-6 in Escherichia coli. Buffalo IL-6 shows very high nucleotide level identity of the cDNA (98.7%) and promoter (98%) sequences with the corresponding cattle sequences.
View Article and Find Full Text PDFRNA interference (RNAi) mediated by double stranded small interfering RNA (siRNA) is a novel mechanism of post-transcriptional gene silencing. It is projected as a potential tool to inhibit viral replication. In the present paper, we demonstrate the suppression of replication of an avian herpes virus (Anatid Herpes Virus-1, AHV-1) by siRNA mediated gene silencing in avian cells.
View Article and Find Full Text PDFInterleukin-12, a heterodimeric pro-inflammatory cytokine, from water buffaloes (Bubalus bubalis) was analyzed for its for its tissue specific expression and functionality. Concanavalin A stimulated splenocytes displayed an up-regulation of the IL-12 p40 subunit 8-24h post-stimulation, whereas the p35 subunit did not show any quantitative variation at different time intervals. Basal level expressions of both the subunits were observed by RT-PCR in spleen.
View Article and Find Full Text PDFThe cDNAs encoding the interleukin-10 and interleukin-18 of Indian water buffalo (Bubalus bubalis) were cloned and sequenced. A 537 bp IL-10 cDNA fragment and a 623 bp IL-18 cDNA fragment were amplified by reverse transcriptase polymerase chain reaction (RT-PCR) from concanavalin A stimulated splenocytes. Sequence analysis of these cytokines revealed high level conservation at nucleic acid and protein level.
View Article and Find Full Text PDFThe immune system of Indian water buffalo (Bubalus bubalis), one of the major dairy animals of the tropics, has received little attention. cDNAs encoding the two subunits of the heterodimeric interleukin (IL)-12 of Indian water buffalo were isolated from concanavalin A-stimulated lymphocytes. The 710-bp p35 and 1012-bp p40 subunits were amplified by reverse transcriptase polymerase chain reaction (RT-PCR), cloned, sequenced and compared with other ruminant sequences.
View Article and Find Full Text PDFChemokines are low-molecular weight-chemotactic cytokines, which are involved in lymphocyte trafficking and migration of leucocytes to sites of injury, in immune surveillance and in healing process. They also play a role in pathogenesis of inflammatory diseases. Three novel CC chemokines were identified from domestic duck (Anas platyrhynchos) by screening of an enriched cDNA library constructed from mitogen-stimulated splenic mononuclear cells.
View Article and Find Full Text PDFA 4400-bp genomic sequence and a 332-bp truncated cDNA sequence of the interleukin-2 (IL-2) gene of Indian water buffalo (Bubalus bubalis) were amplified by polymerase chain reaction and cloned. The coding sequence of the buffalo IL-2 gene was assembled from the 5' end of the genomic clone and the truncated cDNA clone. This sequence had 98.
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