journal
MENU ▼
Read by QxMD icon Read
search

PLoS Pathogens

journal
https://www.readbyqxmd.com/read/28085958/alveolar-macrophages-prevent-lethal-influenza-pneumonia-by-inhibiting-infection-of-type-1-alveolar-epithelial-cells
#1
Amber Cardani, Adam Boulton, Taeg S Kim, Thomas J Braciale
The Influenza A virus (IAV) is a major human pathogen that produces significant morbidity and mortality. To explore the contribution of alveolar macrophages (AlvMΦs) in regulating the severity of IAV infection we employed a murine model in which the Core Binding Factor Beta gene is conditionally disrupted in myeloid cells. These mice exhibit a selective deficiency in AlvMΦs. Following IAV infection these AlvMΦ deficient mice developed severe diffuse alveolar damage, lethal respiratory compromise, and consequent lethality...
January 13, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28081268/the-rice-dynamin-related-protein-osdrp1e-negatively-regulates-programmed-cell-death-by-controlling-the-release-of-cytochrome-c-from-mitochondria
#2
Zhiqiang Li, Bo Ding, Xueping Zhou, Guo-Liang Wang
Programmed cell death (PCD) mediated by mitochondrial processes has emerged as an important mechanism for plant development and responses to abiotic and biotic stress. However, the role of translocation of cytochrome c from the mitochondria to the cytosol during PCD remains unclear. Here, we demonstrate that the rice dynamin-related protein 1E (OsDRP1E) negatively regulates PCD by controlling mitochondrial structure and cytochrome c release. We used a map-based cloning strategy to isolate OsDRP1E from the lesion mimic mutant dj-lm and confirmed that the E409V mutation in OsDRP1E causes spontaneous cell death in rice...
January 12, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28076396/neutrophil-interactions-stimulate-evasive-hyphal-branching-by-aspergillus-fumigatus
#3
Felix Ellett, Julianne Jorgensen, Galit H Frydman, Caroline N Jones, Daniel Irimia
Invasive aspergillosis (IA), primarily caused by Aspergillus fumigatus, is an opportunistic fungal infection predominantly affecting immunocompromised and neutropenic patients that is difficult to treat and results in high mortality. Investigations of neutrophil-hypha interaction in vitro and in animal models of IA are limited by lack of temporal and spatial control over interactions. This study presents a new approach for studying neutrophil-hypha interaction at single cell resolution over time, which revealed an evasive fungal behavior triggered by interaction with neutrophils: Interacting hyphae performed de novo tip formation to form new hyphal branches, allowing the fungi to avoid the interaction point and continue invasive growth...
January 11, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28060952/trim25-enhances-the-antiviral-action-of-zinc-finger-antiviral-protein-zap
#4
Melody M H Li, Zerlina Lau, Pamela Cheung, Eduardo G Aguilar, William M Schneider, Leonia Bozzacco, Henrik Molina, Eugen Buehler, Akinori Takaoka, Charles M Rice, Dan P Felsenfeld, Margaret R MacDonald
The host factor and interferon (IFN)-stimulated gene (ISG) product, zinc-finger antiviral protein (ZAP), inhibits a number of diverse viruses by usurping and intersecting with multiple cellular pathways. To elucidate its antiviral mechanism, we perform a loss-of-function genome-wide RNAi screen to identify cellular cofactors required for ZAP antiviral activity against the prototype alphavirus, Sindbis virus (SINV). In order to exclude off-target effects, we carry out stringent confirmatory assays to verify the top hits...
January 6, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28060938/ev71-3d-protein-binds-with-nlrp3-and-enhances-the-assembly-of-inflammasome-complex
#5
Wenbiao Wang, Feng Xiao, Pin Wan, Pan Pan, Yecheng Zhang, Fang Liu, Kailang Wu, Yingle Liu, Jianguo Wu
Activation of NLRP3 inflammasome is important for effective host defense against invading pathogen. Together with apoptosis-associated speck-like protein containing CARD domain (ASC), NLRP3 induces the cleavage of caspase-1 to facilitate the maturation of interleukin-1beta (IL-1β), an important pro-inflammatory cytokine. IL-1β subsequently plays critical roles in inflammatory responses by activating immune cells and inducing many secondary pro-inflammatory cytokines. Although the role of NLRP3 inflammasome in immune response is well defined, the mechanism underlying its assembly modulated by pathogen infection remains largely unknown...
January 6, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28052137/mapping-polyclonal-hiv-1-antibody-responses-via-next-generation-neutralization-fingerprinting
#6
Nicole A Doria-Rose, Han R Altae-Tran, Ryan S Roark, Stephen D Schmidt, Matthew S Sutton, Mark K Louder, Gwo-Yu Chuang, Robert T Bailer, Valerie Cortez, Rui Kong, Krisha McKee, Sijy O'Dell, Felicia Wang, Salim S Abdool Karim, James M Binley, Mark Connors, Barton F Haynes, Malcolm A Martin, David C Montefiori, Lynn Morris, Julie Overbaugh, Peter D Kwong, John R Mascola, Ivelin S Georgiev
Computational neutralization fingerprinting, NFP, is an efficient and accurate method for predicting the epitope specificities of polyclonal antibody responses to HIV-1 infection. Here, we present next-generation NFP algorithms that substantially improve prediction accuracy for individual donors and enable serologic analysis for entire cohorts. Specifically, we developed algorithms for: (a) selection of optimized virus neutralization panels for NFP analysis, (b) estimation of NFP prediction confidence for each serum sample, and (c) identification of sera with potentially novel epitope specificities...
January 4, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28052114/crl4wdr1-controls-polo-like-kinase-protein-abundance-to-promote-bilobe-duplication-basal-body-segregation-and-flagellum-attachment-in-trypanosoma-brucei
#7
Huiqing Hu, Qing Zhou, Xianxian Han, Ziyin Li
The Polo-like kinase homolog in Trypanosoma brucei, TbPLK, plays essential roles in basal body segregation, flagellum attachment and cytokinesis. The level of TbPLK protein is tightly controlled, but the underlying mechanism remains elusive. Here, we report a Cullin-RING ubiquitin ligase composed of Cullin4, the DNA damage-binding protein 1 homolog TbDDB1 and a WD40-repeat protein WDR1 that controls TbPLK abundance in the basal body and the bilobe. WDR1, through its C-terminal domain, interacts with the PEST motif in TbPLK and, through its N-terminal WD40 motif, binds to TbDDB1...
January 4, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28046096/early-antiretroviral-therapy-is-associated-with-lower-hiv-dna-molecular-diversity-and-lower-inflammation-in-cerebrospinal-fluid-but-does-not-prevent-the-establishment-of-compartmentalized-hiv-dna-populations
#8
Michelli F Oliveira, Antoine Chaillon, Masato Nakazawa, Milenka Vargas, Scott L Letendre, Matthew C Strain, Ronald J Ellis, Sheldon Morris, Susan J Little, Davey M Smith, Sara Gianella
Even when antiretroviral therapy (ART) is started early after infection, HIV DNA might persist in the central nervous system (CNS), possibly contributing to inflammation, brain damage and neurocognitive impairment. Paired blood and cerebrospinal fluid (CSF) were collected from 16 HIV-infected individuals on suppressive ART: 9 participants started ART <4 months of the estimated date of infection (EDI) ("early ART"), and 7 participants started ART >14 months after EDI ("late ART"). For each participant, neurocognitive functioning was measured by Global Deficit Score (GDS)...
January 3, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/27992577/tolerogenic-plasmacytoid-dendritic-cells-control-paracoccidioides-brasiliensis-infection-by-inducting-regulatory-t-cells-in-an-ido-dependent-manner
#9
Eliseu Frank de Araújo, Daniella Helena Medeiros, Nayane Alves de Lima Galdino, Antônio Condino-Neto, Vera Lúcia Garcia Calich, Flávio Vieira Loures
Plasmacytoid dendritic cells (pDCs), considered critical for immunity against viruses, were recently associated with defense mechanisms against fungal infections. However, the immunomodulatory function of pDCs in pulmonary paracoccidiodomycosis (PCM), an endemic fungal infection of Latin America, has been poorly defined. Here, we investigated the role of pDCs in the pathogenesis of PCM caused by the infection of 129Sv mice with 1 x 106 P. brasiliensis-yeasts. In vitro experiments showed that P. brasiliensis infection induces the maturation of pDCs and elevated synthesis of TNF-α and IFN-β...
December 19, 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/28081265/the-plasmin-sensitive-protein-pls-in-methicillin-resistant-staphylococcus-aureus-mrsa-is-a-glycoprotein
#10
Isabelle Bleiziffer, Julian Eikmeier, Gottfried Pohlentz, Kathryn McAulay, Guoqing Xia, Muzaffar Hussain, Andreas Peschel, Simon Foster, Georg Peters, Christine Heilmann
Most bacterial glycoproteins identified to date are virulence factors of pathogenic bacteria, i.e. adhesins and invasins. However, the impact of protein glycosylation on the major human pathogen Staphylococcus aureus remains incompletely understood. To study protein glycosylation in staphylococci, we analyzed lysostaphin lysates of methicillin-resistant Staphylococcus aureus (MRSA) strains by SDS-PAGE and subsequent periodic acid-Schiff's staining. We detected four (>300, ∼250, ∼165, and ∼120 kDa) and two (>300 and ∼175 kDa) glycosylated surface proteins with strain COL and strain 1061, respectively...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28081253/probability-of-transmission-of-malaria-from-mosquito-to-human-is-regulated-by-mosquito-parasite-density-in-na%C3%A3-ve-and-vaccinated-hosts
#11
Thomas S Churcher, Robert E Sinden, Nick J Edwards, Ian D Poulton, Thomas W Rampling, Patrick M Brock, Jamie T Griffin, Leanna M Upton, Sara E Zakutansky, Katarzyna A Sala, Fiona Angrisano, Adrian V S Hill, Andrew M Blagborough
Over a century since Ronald Ross discovered that malaria is caused by the bite of an infectious mosquito it is still unclear how the number of parasites injected influences disease transmission. Currently it is assumed that all mosquitoes with salivary gland sporozoites are equally infectious irrespective of the number of parasites they harbour, though this has never been rigorously tested. Here we analyse >1000 experimental infections of humans and mice and demonstrate a dose-dependency for probability of infection and the length of the host pre-patent period...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28081240/oropharyngeal-candidiasis-fungal-invasion-and-epithelial-cell-responses
#12
Marc Swidergall, Scott G Filler
No abstract text is available yet for this article.
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28081225/fighting-ebola-a-window-for-vaccine-re-evaluation
#13
Keith J Chappell, Daniel Watterson
No abstract text is available yet for this article.
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28076420/chaperone-mediated-autophagy-protein-bag3-negatively-regulates-ebola-and-marburg-vp40-mediated-egress
#14
Jingjing Liang, Cari A Sagum, Mark T Bedford, Sachdev S Sidhu, Marius Sudol, Ziying Han, Ronald N Harty
Ebola (EBOV) and Marburg (MARV) viruses are members of the Filoviridae family which cause outbreaks of hemorrhagic fever. The filovirus VP40 matrix protein is essential for virus assembly and budding, and its PPxY L-domain motif interacts with WW-domains of specific host proteins, such as Nedd4 and ITCH, to facilitate the late stage of virus-cell separation. To identify additional WW-domain-bearing host proteins that interact with VP40, we used an EBOV PPxY-containing peptide to screen an array of 115 mammalian WW-domain-bearing proteins...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28076415/structure-and-recognition-of-a-novel-hiv-1-gp120-gp41-interface-antibody-that-caused-mper-exposure-through-viral-escape
#15
Constantinos Kurt Wibmer, Jason Gorman, Gabriel Ozorowski, Jinal N Bhiman, Daniel J Sheward, Debra H Elliott, Julie Rouelle, Ashley Smira, M Gordon Joyce, Nonkululeko Ndabambi, Aliaksandr Druz, Mangai Asokan, Dennis R Burton, Mark Connors, Salim S Abdool Karim, John R Mascola, James E Robinson, Andrew B Ward, Carolyn Williamson, Peter D Kwong, Lynn Morris, Penny L Moore
A comprehensive understanding of the regions on HIV-1 envelope trimers targeted by broadly neutralizing antibodies may contribute to rational design of an HIV-1 vaccine. We previously identified a participant in the CAPRISA cohort, CAP248, who developed trimer-specific antibodies capable of neutralizing 60% of heterologous viruses at three years post-infection. Here, we report the isolation by B cell culture of monoclonal antibody CAP248-2B, which targets a novel membrane proximal epitope including elements of gp120 and gp41...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28076397/when-viruses-don-t-go-viral-the-importance-of-host-phylogeographic-structure-in-the-spatial-spread-of-arenaviruses
#16
Sophie Gryseels, Stuart J E Baird, Benny Borremans, Rhodes Makundi, Herwig Leirs, Joëlle Goüy de Bellocq
Many emerging infections are RNA virus spillovers from animal reservoirs. Reservoir identification is necessary for predicting the geographic extent of infection risk, but rarely are taxonomic levels below the animal species considered as reservoir, and only key circumstances in nature and methodology allow intrinsic virus-host associations to be distinguished from simple geographic (co-)isolation. We sampled and genetically characterized in detail a contact zone of two subtaxa of the rodent Mastomys natalensis in Tanzania...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28068413/social-and-genetic-networks-of-hiv-1-transmission-in-new-york-city
#17
Joel O Wertheim, Sergei L Kosakovsky Pond, Lisa A Forgione, Sanjay R Mehta, Ben Murrell, Sharmila Shah, Davey M Smith, Konrad Scheffler, Lucia V Torian
BACKGROUND: Sexually transmitted infections spread across contact networks. Partner elicitation and notification are commonly used public health tools to identify, notify, and offer testing to persons linked in these contact networks. For HIV-1, a rapidly evolving pathogen with low per-contact transmission rates, viral genetic sequences are an additional source of data that can be used to infer or refine transmission networks. METHODS AND FINDINGS: The New York City Department of Health and Mental Hygiene interviews individuals newly diagnosed with HIV and elicits names of sexual and injection drug using partners...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28060924/the-effector-domain-region-of-the-vibrio-vulnificus-martx-toxin-confers-biphasic-epithelial-barrier-disruption-and-is-essential-for-systemic-spread-from-the-intestine
#18
Hannah E Gavin, Nike T Beubier, Karla J F Satchell
Vibrio vulnificus causes highly lethal bacterial infections in which the Multifunctional Autoprocessing Repeats-in-Toxins (MARTX) toxin product of the rtxA1 gene is a key virulence factor. MARTX toxins are secreted proteins up to 5208 amino acids in size. Conserved MARTX N- and C-terminal repeat regions work in concert to form pores in eukaryotic cell membranes, through which the toxin's central region of modular effector domains is translocated. Upon inositol hexakisphosphate-induced activation of the of the MARTX cysteine protease domain (CPD) in the eukaryotic cytosol, effector domains are released from the holotoxin by autoproteolytic activity...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28060920/the-tir-homologue-lies-near-resistance-genes-in-staphylococcus-aureus-coupling-modulation-of-virulence-and-antimicrobial-susceptibility
#19
Sabine Patot, Paul Rc Imbert, Jessica Baude, Patricia Martins Simões, Jean-Baptiste Campergue, Arthur Louche, Reindert Nijland, Michèle Bès, Anne Tristan, Frédéric Laurent, Adrien Fischer, Jacques Schrenzel, François Vandenesch, Suzana P Salcedo, Patrice François, Gérard Lina
Toll/interleukin-1 receptor (TIR) domains in Toll-like receptors are essential for initiating and propagating the eukaryotic innate immune signaling cascade. Here, we investigate TirS, a Staphylococcus aureus TIR mimic that is part of a novel bacterial invasion mechanism. Its ectopic expression in eukaryotic cells inhibited TLR signaling, downregulating the NF-kB pathway through inhibition of TLR2, TLR4, TLR5, and TLR9. Skin lesions induced by the S. aureus knockout tirS mutant increased in a mouse model compared with wild-type and restored strains even though the tirS-mutant and wild-type strains did not differ in bacterial load...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28056111/vibrio-vulnificus-from-oyster-colonist-to-human-pathogen
#20
Kelsey E Phillips, Karla J F Satchell
No abstract text is available yet for this article.
January 2017: PLoS Pathogens
journal
journal
20326
1
2
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"