In Chronic Hepatitis C Infection, Myeloid-Derived Suppressor Cell Accumulation and T Cell Dysfunctions Revert Partially and Late After Successful Direct-Acting Antiviral Treatment.

Abstract:

:Chronic HCV infection is characterized by several immunological alterations, such as the accumulation of suppressor cells and of hyperactivated T lymphocytes. However, it is unclear whether direct-acting antiviral (DAA)-mediated HCV clearance restores immune dysfunctions. We performed a phenotypic characterization by flow cytometry of different immune cell subsets, including monocytic myeloid-derived suppressor cells (M-MDSCs) and T lymphocytes in 168 patients with persistent HCV infection not treated, under DAA therapies and sustained virological responders. Chronic HCV infection prompted the accumulation of M-MDSCs independently of patient and clinical characteristics, and altered their metabolic properties. HCV RNA was undetectable in the majority of patients just after few weeks of DAA therapy, whereas M-MDSC levels normalized only 6 months after therapy. In addition, HCV infection deeply perturbed the T cell compartment since a re-distribution of memory CD4+ and CD8+ T cells was observed at the expenses of naïve cells, and memory T lymphocytes displayed increased activation. Notably, these features were only partially restored by DAA therapies in the CD4, but not in the CD8, compartment as high immune activation levels persisted in the terminally differentiated memory CD8+ T cells even more than 1 year after sustained virological response. Together, these results suggest that successful DAA therapies do not lead to full immunological reconstitution as fast as viral clearance.

authors

Telatin V,Nicoli F,Frasson C,Menegotto N,Barbaro F,Castelli E,Erne E,Palù G,Caputo A

doi

10.3389/fcimb.2019.00190

subject

Has Abstract

pub_date

2019-06-14 00:00:00

pages

190

issn

2235-2988

journal_volume

9

pub_type

杂志文章
  • Enterokinase Enhances Influenza A Virus Infection by Activating Trypsinogen in Human Cell Lines.

    abstract::Cleavage and activation of hemagglutinin (HA) by trypsin-like proteases in influenza A virus (IAV) are essential prerequisites for its successful infection and spread. In host cells, some transmembrane serine proteases such as TMPRSS2, TMPRSS4 and HAT, along with plasmin in the bloodstream, have been reported to cleav...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2018.00091

    authors: Hayashi H,Kubo Y,Izumida M,Takahashi E,Kido H,Sato K,Yamaya M,Nishimura H,Nakayama K,Matsuyama T

    更新日期:2018-03-23 00:00:00

  • Evidencing the Role of Erythrocytic Apoptosis in Malarial Anemia.

    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

    pub_type: 杂志文章,评审

    doi:10.3389/fcimb.2016.00176

    authors: Totino PR,Daniel-Ribeiro CT,Ferreira-da-Cruz MF

    更新日期:2016-12-09 00:00:00

  • The Dynamic Roles of the Inner Membrane Complex in the Multiple Stages of the Malaria Parasite.

    abstract::Apicomplexan parasites, such as human malaria parasites, have complex lifecycles encompassing multiple and diverse environmental niches. Invading, replicating, and escaping from different cell types, along with exploiting each intracellular niche, necessitate large and dynamic changes in parasite morphology and cellul...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章,评审

    doi:10.3389/fcimb.2020.611801

    authors: Ferreira JL,Heincke D,Wichers JS,Liffner B,Wilson DW,Gilberger TW

    更新日期:2021-01-08 00:00:00

  • Molecular Characterization of Circulating Microbiome Signatures in Rheumatoid Arthritis.

    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

    pub_type: 杂志文章

    doi:10.3389/fcimb.2019.00440

    authors: Hammad DBM,Hider SL,Liyanapathirana VC,Tonge DP

    更新日期:2020-01-22 00:00:00

  • Granulomatous response to Coxiella burnetii, the agent of Q fever: the lessons from gene expression analysis.

    abstract::The formation of granulomas is associated with the resolution of Q fever, a zoonosis due to Coxiella burnetii; however the molecular mechanisms of granuloma formation remain poorly understood. We generated human granulomas with peripheral blood mononuclear cells (PBMCs) and beads coated with C. burnetii, using BCG ext...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2014.00172

    authors: Faugaret D,Ben Amara A,Alingrin J,Daumas A,Delaby A,Lépolard C,Raoult D,Textoris J,Mège JL

    更新日期:2014-12-15 00:00:00

  • Screening of Mycobacterium avium subsp. paratuberculosis mutants for attenuation in a bovine monocyte-derived macrophage model.

    abstract::Vaccination remains a major tool for prevention and progression of Johne's disease, a chronic enteritis of ruminants worldwide. Currently there is only one licensed vaccine within the United States and two vaccines licensed internationally against Johne's disease. All licensed vaccines reduce fecal shedding of Mycobac...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2014.00087

    authors: Lamont EA,Talaat AM,Coussens PM,Bannantine JP,Grohn YT,Katani R,Li LL,Kapur V,Sreevatsan S

    更新日期:2014-06-30 00:00:00

  • Immunoproteomics Reveals Pathogen's Antigens Involved in Homo sapiens-Histoplasma capsulatum Interaction and Specific Linear B-Cell Epitopes in Histoplasmosis.

    abstract::Histoplasmosis is one of the most frequent systemic mycosis in HIV patients. In these patients, histoplasmosis has high rates of morbidity/mortality if diagnosis and treatment are delayed. Despite its relevance, there is a paucity of information concerning the interaction between Histoplasma capsulatum and the human h...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2020.591121

    authors: Almeida MA,Almeida-Paes R,Guimarães AJ,Valente RH,Soares CMA,Zancopé-Oliveira RM

    更新日期:2020-10-29 00:00:00

  • The HSV-1 ICP4 Transcriptional Auto-Repression Circuit Functions as a Transcriptional "Accelerator" Circuit.

    abstract::Herpes simplex virus-1 (HSV-1) is a significant human pathogen. Upon infection, HSV-1 expresses its immediate early (IE) genes, and the IE transcription factor ICP4 (infectious cell protein-4) plays a pivotal role in initiating the downstream gene-expression cascade. Using live-cell time-lapse fluorescence microscopy,...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2020.00265

    authors: Chaturvedi S,Engel R,Weinberger L

    更新日期:2020-06-24 00:00:00

  • Molecular Characterization of a Prevalent Ribocluster of Methicillin-Sensitive Staphylococcus aureus from Orthopedic Implant Infections. Correspondence with MLST CC30.

    abstract::Staphylococcus aureus is the leading etiologic agent of orthopedic implant infections. Here a ribocluster of 27 S. aureus strains underwent further molecular characterization and subtyping by multilocus sequence typing (MLST) and spa-typing. This cluster had been detected by automated ribotyping (with the EcoRI restri...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2016.00008

    authors: Montanaro L,Ravaioli S,Ruppitsch W,Campoccia D,Pietrocola G,Visai L,Speziale P,Allerberger F,Arciola CR

    更新日期:2016-02-16 00:00:00

  • Non-typeable Haemophilus influenzae invasion and persistence in the human respiratory tract.

    abstract::Non-typeable Haemophilus influenzae (NTHI) is an opportunistic bacterial pathogen of the human respiratory tract and is a leading cause of respiratory infections in children and adults. NTHI is considered to be an extracellular pathogen, but has consistently been observed within and between human respiratory epithelia...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章,评审

    doi:10.3389/fcimb.2011.00001

    authors: Clementi CF,Murphy TF

    更新日期:2011-11-18 00:00:00

  • Activation of Host IRE1α-Dependent Signaling Axis Contributes the Intracellular Parasitism of Brucella melitensis.

    abstract::Brucella spp. are intracellular vacuolar pathogens that causes brucellosis, a worldwide zoonosis of profound importance. We previously demonstrated that the activity of host unfolded protein response (UPR) sensor IRE1α (inositol-requiring enzyme 1) and ER-associated autophagy confer susceptibility to Brucella melitens...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2018.00103

    authors: Pandey A,Lin F,Cabello AL,da Costa LF,Feng X,Feng HQ,Zhang MZ,Iwawaki T,Rice-Ficht A,Ficht TA,de Figueiredo P,Qin QM

    更新日期:2018-04-20 00:00:00

  • CRH Affects the Phenotypic Expression of Sepsis-Associated Virulence Factors by Streptococcus pneumoniae Serotype 1 In vitro.

    abstract::Sepsis is a life-threatening health condition caused by infectious pathogens of the respiratory tract, and accounts for 28-50% of annual deaths in the US alone. Current treatment regimen advocates the use of corticosteroids as adjunct treatment with antibiotics, for their broad inhibitory effect on the activity and pr...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2017.00263

    authors: Ngo Ndjom CG,Kantor LV,Jones HP

    更新日期:2017-06-22 00:00:00

  • Association Between Gut Microbiota and Helicobacter pylori-Related Gastric Lesions in a High-Risk Population of Gastric Cancer.

    abstract::Eradication of Helicobacter pylori has been found to be effective for gastric cancer prevention, but uncertainties remain about the possible adverse consequences such as the potential microbial dysbiosis. In our study, we investigated the association between gut microbiota and H. pylori-related gastric lesions in 47 s...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2018.00202

    authors: Gao JJ,Zhang Y,Gerhard M,Mejias-Luque R,Zhang L,Vieth M,Ma JL,Bajbouj M,Suchanek S,Liu WD,Ulm K,Quante M,Li ZX,Zhou T,Schmid R,Classen M,Li WQ,You WC,Pan KF

    更新日期:2018-06-19 00:00:00

  • Entamoeba histolytica EhCP112 Dislocates and Degrades Claudin-1 and Claudin-2 at Tight Junctions of the Intestinal Epithelium.

    abstract::During intestinal invasion, Entamoeba histolytica opens tight junctions (TJs) reflected by transepithelial electrical resistance (TEER) dropping. To explore the molecular mechanisms underlying this, we studied in vitro and in vivo the damage produced by the recombinant E. histolytica cysteine protease (rEhCP112) on TJ...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2017.00372

    authors: Cuellar P,Hernández-Nava E,García-Rivera G,Chávez-Munguía B,Schnoor M,Betanzos A,Orozco E

    更新日期:2017-08-16 00:00:00

  • Influence of the MUC1 Cell Surface Mucin on Gastric Mucosal Gene Expression Profiles in Response to Helicobacter pylori Infection in Mice.

    abstract::The cell surface mucin MUC1 is an important host factor limiting Helicobacter pylori (H. pylori) pathogenesis in both humans and mice by providing a protective barrier and modulating mucosal epithelial and leukocyte responses. The aim of this study was to establish the time-course of molecular events in MUC1-modulated...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2020.00343

    authors: Sheng YH,Ng GZ,Summers KM,Every AL,Price G,Hasnain SZ,Sutton P,McGuckin MA

    更新日期:2020-07-24 00:00:00

  • Fungal pathogens-a sweet and sour treat for toll-like receptors.

    abstract::Hundred-thousands of fungal species are present in our environment, including normal colonizers that constitute part of the human microbiota. The homeostasis of host-fungus interactions encompasses efficient fungal sensing, tolerance at mucosal surfaces, as well as antifungal defenses. Decrease in host immune fitness ...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章,评审

    doi:10.3389/fcimb.2012.00142

    authors: Bourgeois C,Kuchler K

    更新日期:2012-11-22 00:00:00

  • The Performance of an Oral Microbiome Biomarker Panel in Predicting Oral Cavity and Oropharyngeal Cancers.

    abstract::The oral microbiome can play a role in the instigation and progression of oral diseases that can manifest into other systemic conditions. These associations encourage the exploration of oral dysbiosis leading to the pathogenesis of cancers. In this study, oral rinse was used to characterize the oral microbiome fluctua...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2018.00267

    authors: Lim Y,Fukuma N,Totsika M,Kenny L,Morrison M,Punyadeera C

    更新日期:2018-08-03 00:00:00

  • Host Porphobilinogen Deaminase Deficiency Confers Malaria Resistance in Plasmodium chabaudi but Not in Plasmodium berghei or Plasmodium falciparum During Intraerythrocytic Growth.

    abstract::An important component in host resistance to malaria infection are inherited mutations that give rise to abnormalities and deficiencies in erythrocyte proteins and enzymes. Understanding how such mutations confer protection against the disease may be useful for developing new treatment strategies. A mouse ENU-induced ...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2020.00464

    authors: Schnider CB,Yang H,Starrs L,Ehmann A,Rahimi F,Di Pierro E,Graziadei G,Matthews K,De Koning-Ward T,Bauer DC,Foote SJ,Burgio G,McMorran BJ

    更新日期:2020-09-03 00:00:00

  • Live Attenuated Tularemia Vaccines for Protection Against Respiratory Challenge With Virulent F. tularensis subsp. tularensis.

    abstract::Francisella tularensis is the causative agent of tularemia and a Tier I bioterrorism agent. In the 1900s, several vaccines were developed against tularemia including the killed "Foshay" vaccine, subunit vaccines comprising F. tularensis protein(s) or lipoproteins(s) in an adjuvant formulation, and the F. tularensis Li...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章,评审

    doi:10.3389/fcimb.2018.00154

    authors: Jia Q,Horwitz MA

    更新日期:2018-05-15 00:00:00

  • Targeting the Type II Secretion System: Development, Optimization, and Validation of a High-Throughput Screen for the Identification of Small Molecule Inhibitors.

    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...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2017.00380

    authors: Waack U,Johnson TL,Chedid K,Xi C,Simmons LA,Mobley HLT,Sandkvist M

    更新日期:2017-08-28 00:00:00

  • Production of Membrane Vesicles by Enterococcus faecium Cultured With or Without Subinhibitory Concentrations of Antibiotics and Their Pathological Effects on Epithelial Cells.

    abstract::Enterococcus faecium is a clinically important pathogen associated with opportunistic infection and multi-drug resistance. E. faecium has been shown to produce membrane vesicles (MVs), but MV production by E. faecium under antibiotic stress conditions and the pathogenic traits thereof have yet to be determined. This s...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2019.00295

    authors: Kim MH,Kim SY,Son JH,Kim SI,Lee H,Kim S,Shin M,Lee JC

    更新日期:2019-08-14 00:00:00

  • Salmonella Populations inside Host Cells.

    abstract::Bacteria of the Salmonella genus cause diseases ranging from gastroenteritis to life-threatening typhoid fever and are among the most successful intracellular pathogens known. After the invasion of the eukaryotic cell, Salmonella exhibits contrasting lifestyles with different replication rates and subcellular location...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章,评审

    doi:10.3389/fcimb.2017.00432

    authors: Castanheira S,García-Del Portillo F

    更新日期:2017-10-04 00:00:00

  • Cross Sectional Study and Risk Factors Analysis of Francisella tularensis in Soil Samples in Punjab Province of Pakistan.

    abstract::Tularemia is an endemic zoonotic disease in many parts of the world including Asia. A cross-sectional study was conducted to determine genome-based prevalence of Francisella tularensis (Ft) in soil, assess an association between its occurrence in soil and likely predictors i.e., macro and micro-nutrients and several c...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2019.00089

    authors: Muhammad J,Rabbani M,Shabbir MZ,Muhammad K,Ghori MT,Chaudhry HR,Ul Hassnain Z,Jamil T,Abbas T,Chaudhry MH,Haisem-Ur-Rasool M,Ali MA,Nisar M,Kirimanjeswara GS,Jayarao BM

    更新日期:2019-04-05 00:00:00

  • Caspofungin Induced Cell Wall Changes of Candida Species Influences Macrophage Interactions.

    abstract::Candida species are known to differ in their ability to cause infection and have been shown to display varied susceptibilities to antifungal drugs. Treatment with the echinocandin, caspofungin, leads to compensatory alterations in the fungal cell wall. This study was performed to compare the structure and composition ...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2020.00164

    authors: Walker LA,Munro CA

    更新日期:2020-05-12 00:00:00

  • The Central Role of IFI204 in IFN-β Release and Autophagy Activation during Mycobacterium bovis Infection.

    abstract::Mycobacterium bovis (M. bovis) is the pathogen of animals and humans that can replicate in the phagosomes of myeloid cells. Cytosolic detection of bacterial products plays a crucial role in initiating the innate immune response, including autophagy activation and interferon-β (IFN-β) release. Although IFN-β release an...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2017.00169

    authors: Chunfa L,Xin S,Qiang L,Sreevatsan S,Yang L,Zhao D,Zhou X

    更新日期:2017-05-05 00:00:00

  • The Gut Microbiome Signatures Discriminate Healthy From Pulmonary Tuberculosis Patients.

    abstract::Cross talk occurs between the human gut and the lung through a gut-lung axis involving the gut microbiota. However, the signatures of the human gut microbiota after active Mycobacterium tuberculosis infection have not been fully understood. Here, we investigated changes in the gut microbiota in tuberculosis (TB) patie...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2019.00090

    authors: Hu Y,Feng Y,Wu J,Liu F,Zhang Z,Hao Y,Liang S,Li B,Li J,Lv N,Xu Y,Zhu B,Sun Z

    更新日期:2019-04-03 00:00:00

  • The Distinct Transcriptional Response of the Midgut of Amblyomma sculptum and Amblyomma aureolatum Ticks to Rickettsia rickettsii Correlates to Their Differences in Susceptibility to Infection.

    abstract::Rickettsia rickettsii is a tick-borne obligate intracellular bacterium that causes Rocky Mountain Spotted Fever (RMSF). In Brazil, two species of ticks in the genus Amblyomma, A. sculptum and A. aureolatum, are incriminated as vectors of this bacterium. Importantly, these two species present remarkable differences in ...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2017.00129

    authors: Martins LA,Galletti MFBM,Ribeiro JM,Fujita A,Costa FB,Labruna MB,Daffre S,Fogaça AC

    更新日期:2017-04-28 00:00:00

  • Cold-Shock Domain Family Proteins (Csps) Are Involved in Regulation of Virulence, Cellular Aggregation, and Flagella-Based Motility in Listeria monocytogenes.

    abstract::Cold shock-domain family proteins (Csps) are highly conserved nucleic acid binding proteins regulating the expression of various genes including those involved in stress resistance and virulence in bacteria. We show here that Csps are involved in virulence, cell aggregation and flagella-based extracellular motility of...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2017.00453

    authors: Eshwar AK,Guldimann C,Oevermann A,Tasara T

    更新日期:2017-10-26 00:00:00

  • The GRA17 Parasitophorous Vacuole Membrane Permeability Pore Contributes to Bradyzoite Viability.

    abstract::The Toxoplasma gondii parasitophorous vacuole membrane (PVM) offers protection from the host immune system but is also a barrier for uptake of nutrients from the host. Previously, we showed that GRA17 mediates the tachyzoite PVM permeability to small molecules. During the conversion from tachyzoites to encysted bradyz...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2019.00321

    authors: Paredes-Santos T,Wang Y,Waldman B,Lourido S,Saeij JP

    更新日期:2019-09-12 00:00:00

  • Nanocarriers From Natural Lipids With In Vitro Activity Against Campylobacter jejuni.

    abstract::Campylobacter jejuni (CJ) is the most prevalent zoonotic pathogen of chicken meat and related products, which may lead to gastroenteritis and autoimmune diseases in humans. Although controlling this bacterium is important, CJ strains resistance against traditional antibiotic therapy has been increased. Vegetable oils ...

    journal_title:Frontiers in cellular and infection microbiology

    pub_type: 杂志文章

    doi:10.3389/fcimb.2020.571040

    authors: Ribeiro LNM,de Paula E,Rossi DA,Martins FA,de Melo RT,Monteiro GP,Breitkreitz MC,Goulart LR,Fonseca BB

    更新日期:2021-01-08 00:00:00