Abstract:
:In the present study, we determined the in vitro characteristics and binding interactions of chicken PD-1 (chPD-1) and PD-L1 (chPD-L1) and developed a panel of specific monoclonal antibodies against the two proteins. ChPD-1 and chPD-L1 sequence identities and similarities were lower compared with those of humans and other mammalian species. Furthermore, in phylogenetic analysis, chPD-1 and chPD-L1 were grouped separately from the mammalian PD-1 and PD-L1 sequences. As in other species, chPD-1 and chPD-L1 sequences showed signal peptide, extracellular domain, a transmembrane domain and intracellular domain. Based on the three dimensional (3D) structural homology, chPD-1, and chPD-L1 were similar to 3D structures of mammalian PD-1 and PD-L1. Further, Ig V domain of chPD-1 and the Ig V and Ig C domains of chPD-L1 were highly conserved with the mammalian counterparts. In vitro binding interaction studies using Superparamagnetic Dynabeads® confirmed that recombinant soluble chPD-1/PD-L1 fusion proteins and surface chPD-1/PD-L1 proteins interacted with each other on COS cells. Two monoclonal antibodies specific against chPD-1 and five antibodies against chPD-L1 were developed and their specific binding characteristics confirmed by immunofluorescence staining and Western blotting.
journal_name
Front Cell Infect Microbioljournal_title
Frontiers in cellular and infection microbiologyauthors
Reddy VRAP,Mwangi W,Sadigh Y,Nair Vdoi
10.3389/fcimb.2019.00436subject
Has Abstractpub_date
2019-12-19 00:00:00pages
436issn
2235-2988journal_volume
9pub_type
杂志文章abstract::Extracellular vesicles (EVs) have garnered much interest in the cell biology and biomedical research fields. Many studies have reported the existence of EVs in all types of living cells, including in fifteen different fungal genera. EVs play diverse biological roles, from the regulation of physiological events and res...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章,评审
doi:10.3389/fcimb.2020.00346
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abstract::Cerebral malaria is a severe neuropathological complication of Plasmodium falciparum infection. It results in high mortality and post-recovery neuro-cognitive disorders in children, even after appropriate treatment with effective anti-parasitic drugs. While the complete landscape of the pathogenesis of cerebral malari...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章,评审
doi:10.3389/fcimb.2015.00075
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doi:10.3389/fcimb.2018.00093
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abstract::Nosocomial pathogens that develop multidrug resistance present an increasing problem for healthcare facilities. Due to its rapid rise in antibiotic resistance, Acinetobacter baumannii is one of the most concerning gram-negative species. A. baumannii typically infects immune compromised individuals resulting in a varie...
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doi:10.3389/fcimb.2017.00380
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abstract::Programmed cell death plays crucial roles in organismal development and host defense. Recent studies have highlighted mechanistic overlaps and extensive, multifaceted crosstalk between pyroptosis, apoptosis, and necroptosis, three programmed cell death pathways traditionally considered autonomous. The growing body of ...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2020.00237
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abstract::Ticks modulate their hosts' defense responses by secreting a biopharmacopiea of hundreds to thousands of proteins and bioactive chemicals into the feeding site (tick-host interface). These molecules and their functions evolved over millions of years as ticks adapted to blood-feeding, tick lineages diverged, and host-s...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章,评审
doi:10.3389/fcimb.2017.00413
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abstract::Stress granules (SGs) are sites of mRNA storage that are formed in response to various conditions of stress, including viral infections. Porcine reproductive and respiratory syndrome virus (PRRSV) is an Arterivirus that has been devastating the swine industry worldwide since the late 1980s. In this study, we found tha...
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abstract::LeuO is a conserved and pleiotropic transcription regulator, antagonist of the nucleoid-associated silencer protein H-NS, and important for pathogenicity and multidrug resistance in Enterobacteriaceae. Regulation of transcription of the leuO gene is complex. It is silenced by H-NS and its paralog StpA, and it is autor...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2016.00106
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abstract::Cerebral malaria is characterized by permanent cognitive impairments in Plasmodium-infected children. Antimalarial therapies show little effectiveness to avoid neurological deficits and brain tissue alterations elicited by severe malaria. Melatonin is a well-recognized endogenous hormone involved in the control of bra...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2020.541624
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abstract::Lung microbiome ecosystem homeostasis in idiopathic pulmonary fibrosis (IPF) remains uncharacterized. The aims of this study were to identify unique microbial signatures of the lung microbiome and analyze microbial gene function in IPF patients. DNA isolated from BALF samples was obtained for high-throughput gene sequ...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2019.00149
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abstract::Non-encapsulated Streptococcus pneumoniae often possess two genes, aliB-like ORF 1 and aliB-like ORF 2, in place of capsule genes. AliB-like ORF 1 is thought to encode a substrate binding protein of an ABC transporter which binds peptide SETTFGRDFN, found in 50S ribosomal subunit protein L4 of Enterobacteriaceae. Here...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2019.00320
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abstract::Amoeba-associated microorganisms (AAMs) are frequently isolated from water networks. In this paper, we report the isolation and characterization of Protochlamydia massiliensis, an obligate intracellular Gram-negative bacterium belonging to the Parachlamydiaceae family in the Chlamydiales order, from a cooling water to...
journal_title:Frontiers in cellular and infection microbiology
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doi:10.3389/fcimb.2017.00385
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abstract::The protozoan Trypanosoma cruzi is the etiological agent of Chagas disease. In immunosuppressed individuals, as it occurs in the coinfection with human immunodeficiency virus (HIV), the central nervous system may be affected. In this regard, reactivation of Chagas disease is severe and often lethal, and it accounts fo...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2017.00345
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abstract::Streptococcus pyogenes (Group A Streptococcus or GAS) is a hemolytic human pathogen associated with a wide variety of infections ranging from minor skin and throat infections to life-threatening invasive diseases. The cell wall of GAS consists of peptidoglycan sacculus decorated with a carbohydrate comprising a polyrh...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2016.00126
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abstract::Total parenteral nutrition (TPN), a commonly used treatment for patients who cannot receive enteral nutrition, is associated with significant septic complications due in part to a loss of epithelial barrier function (EBF). While the underlying mechanisms of TPN-related epithelial changes are poorly understood, a mouse...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章,评审
doi:10.3389/fcimb.2013.00105
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abstract::Deposition of Burkholderia pseudomallei within either the lungs or nasal passages of the Balb/c murine model resulted in different infection kinetics. The infection resulting from the inhalation of B. pseudomallei within a 12 μm particle aerosol was prolonged compared to a 1 μm particle aerosol with a mean time-to-dea...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2012.00101
更新日期:2012-07-23 00:00:00
abstract::The Asian tiger mosquito Aedes (Stegomya) albopictus is an invasive species that has spread across the world in the last two decades, showing a great capacity to adapt to contrasting climates and environments. While demonstrated in many insects, the contribution of bacterial symbionts in Aedes ecology is a challenging...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2014.00059
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abstract::Dengue fever is an Aedes mosquito-borne illness caused by any one of the four different dengue virus (DENV) serotypes (1-4) and manifests in the form of symptoms ranging from mild or asymptomatic to severe disease with vascular leakage, leading to shock, and viral hemorrhagic syndrome. Increased risk of severe disease...
journal_title:Frontiers in cellular and infection microbiology
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journal_title:Frontiers in cellular and infection microbiology
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journal_title:Frontiers in cellular and infection microbiology
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abstract::In the last decade it has become clear that, similarly to nucleated cells, enucleated red blood cells (RBCs) are susceptible to programmed apoptotic cell death. Erythrocytic apoptosis seems to play a role in physiological clearance of aged RBCs, but it may also be implicated in anemia of different etiological sources ...
journal_title:Frontiers in cellular and infection microbiology
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doi:10.3389/fcimb.2016.00176
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abstract::Rheumatoid Arthritis (RA) has been increasingly associated with perturbations to the microbial communities that reside in and on the body (the microbiome), in both human and animal studies. To date, such studies have mainly focused on the microbial communities that inhabit the gut and oral cavity. Mounting evidence su...
journal_title:Frontiers in cellular and infection microbiology
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doi:10.3389/fcimb.2019.00440
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abstract::Mycobacterium avium subspecies paratuberculosis (MAP) causes Johne's disease, a chronic granulomatous enteritis in ruminants. Furthermore, infections of humans with MAP have been reported and a possible association with Crohn's disease and diabetes type I is currently discussed. MAP owns large sequence polymorphisms (...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2014.00110
更新日期:2014-08-14 00:00:00
abstract::Stapylococcus aureus is a common infectious agent in e.g. sepsis, associated with both high mortality rates and severe long-term effects. The cytolytic protein α-hemolysin has repeatedly been shown to enhance the virulence of S. aureus. Combined with an unhindered spread of multi drug-resistant strains, this has trigg...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2020.571578
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abstract::Sepsis is a severe syndrome that arises when the host response to an insult is exacerbated, leading to organ failure and frequently to death. How a chronic infection that causes a prolonged Th1 expansion affects the course of sepsis is unknown. In this study, we showed that mice chronically infected with Toxoplasma go...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章
doi:10.3389/fcimb.2017.00116
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abstract::ESKAPE (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumanni, Pseudomonas aeruginosa, and Enterobacter species) pathogens have characteristic multiple-drug resistance and cause an increasing number of nosocomial infections worldwide. Peptide-based therapeutics to treat ESKAPE infe...
journal_title:Frontiers in cellular and infection microbiology
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doi:10.3389/fcimb.2017.00041
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abstract::Clostridium difficile is a toxin-producing bacterium that is a frequent cause of hospital-acquired and antibiotic-associated diarrhea. The incidence, severity, and costs associated with C. difficile associated disease are substantial and increasing, making C. difficile a significant public health concern. The two prim...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章,评审
doi:10.3389/fcimb.2012.00028
更新日期:2012-03-16 00:00:00
abstract::Despite decades of dedicated research, there remains a dire need for new drugs against tuberculosis (TB). Current therapies are generations old and problematic. Resistance to these existing therapies results in an ever-increasing burden of patients with disease that is difficult or impossible to treat. Novel chemical ...
journal_title:Frontiers in cellular and infection microbiology
pub_type: 杂志文章,评审
doi:10.3389/fcimb.2020.605662
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