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  1. Article ; Online: Progress in the evaluation of modified vaccinia Ankara vaccine against mpox.

    Mazzotta, Valentina / Matusali, Giulia / Oliva, Alessandra / Maggi, Fabrizio / Antinori, Andrea

    The Lancet. Infectious diseases

    2023  Volume 23, Issue 11, Page(s) 1214–1215

    MeSH term(s) Humans ; Vaccinia/prevention & control ; Mpox (monkeypox) ; Vaccinia virus ; Viral Vaccines
    Chemical Substances Viral Vaccines
    Language English
    Publishing date 2023-07-17
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 2061641-7
    ISSN 1474-4457 ; 1473-3099
    ISSN (online) 1474-4457
    ISSN 1473-3099
    DOI 10.1016/S1473-3099(23)00369-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Biomimetic nanoplasmonic sensor for rapid evaluation of neutralizing SARS-CoV-2 monoclonal antibodies as antiviral therapy

    Batool, Razia / Soler, Maria / Colavita, Francesca / Fabeni, Lavinia / Matusali, Giulia / Lechuga, Laura M.

    Biosensors and Bioelectronics. 2023 Feb. 08, p.115137-

    2023  , Page(s) 115137–

    Abstract: Monoclonal antibody (mAb) therapy is one of the most promising immunotherapies that have shown the potential to prevent or neutralize the effects of COVID-19 in patients at very early stages, with a few formulations recently approved by the European and ... ...

    Abstract Monoclonal antibody (mAb) therapy is one of the most promising immunotherapies that have shown the potential to prevent or neutralize the effects of COVID-19 in patients at very early stages, with a few formulations recently approved by the European and American medicine agencies. However, a main bottleneck for their general implementation resides in the time-consuming, laborious, and highly-specialized techniques employed for the manufacturing and assessing of these therapies, excessively increasing their prices and delaying their administration to the patients. We propose a biomimetic nanoplasmonic biosensor as a novel analytical technique for the screening and evaluation of COVID-19 mAb therapies in a simpler, faster, and reliable manner. By creating an artificial cell membrane on the plasmonic sensor surface, our label-free sensing approach enables real-time monitoring of virus-cell interactions as well as direct analysis of antibody blocking effects in only 15 minutes assay time. We have achieved detection limits in the 10² TCID50/mL range for the study of SARS-CoV-2 viruses, which allows to perform neutralization assays by only employing a low-volume sample with common viral loads. We have demonstrated the accuracy of the biosensor for the evaluation of two different neutralizing antibodies targeting both Delta and Omicron variants of SARS-CoV-2, with half maximal inhibitory concentrations (IC₅₀) determined in the ng/mL range. Our user-friendly and reliable technology could be employed in biomedical and pharmaceutical laboratories to accelerate, cheapen, and simplify the development of effective immunotherapies for COVID-19 and other serious infectious diseases or cancer.
    Keywords COVID-19 infection ; Severe acute respiratory syndrome coronavirus 2 ; analytical methods ; biomimetics ; biosensors ; cell membranes ; medicine ; monoclonal antibodies ; neutralization ; therapeutics ; Surface plasmon resonance ; COVID-19 ; Immunotherapy ; Neutralization assay ; Supported lipid bilayer ; Label-free analysis
    Language English
    Dates of publication 2023-0208
    Publishing place Elsevier B.V.
    Document type Article ; Online
    Note Pre-press version ; Use and reproduction
    ZDB-ID 1011023-9
    ISSN 1873-4235 ; 0956-5663
    ISSN (online) 1873-4235
    ISSN 0956-5663
    DOI 10.1016/j.bios.2023.115137
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Biomimetic nanoplasmonic sensor for rapid evaluation of neutralizing SARS-CoV-2 monoclonal antibodies as antiviral therapy.

    Batool, Razia / Soler, Maria / Colavita, Francesca / Fabeni, Lavinia / Matusali, Giulia / Lechuga, Laura M

    Biosensors & bioelectronics

    2023  Volume 226, Page(s) 115137

    Abstract: Monoclonal antibody (mAb) therapy is one of the most promising immunotherapies that have shown the potential to prevent or neutralize the effects of COVID-19 in patients at very early stages, with a few formulations recently approved by the European and ... ...

    Abstract Monoclonal antibody (mAb) therapy is one of the most promising immunotherapies that have shown the potential to prevent or neutralize the effects of COVID-19 in patients at very early stages, with a few formulations recently approved by the European and American medicine agencies. However, a main bottleneck for their general implementation resides in the time-consuming, laborious, and highly-specialized techniques employed for the manufacturing and assessing of these therapies, excessively increasing their prices and delaying their administration to the patients. We propose a biomimetic nanoplasmonic biosensor as a novel analytical technique for the screening and evaluation of COVID-19 mAb therapies in a simpler, faster, and reliable manner. By creating an artificial cell membrane on the plasmonic sensor surface, our label-free sensing approach enables real-time monitoring of virus-cell interactions as well as direct analysis of antibody blocking effects in only 15 min assay time. We have achieved detection limits in the 10
    MeSH term(s) Humans ; Biomimetics ; SARS-CoV-2 ; Biosensing Techniques ; COVID-19 ; Antibodies, Viral ; Antiviral Agents
    Chemical Substances Antibodies, Viral ; Antiviral Agents
    Language English
    Publishing date 2023-02-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 1011023-9
    ISSN 1873-4235 ; 0956-5663
    ISSN (online) 1873-4235
    ISSN 0956-5663
    DOI 10.1016/j.bios.2023.115137
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: SARS-CoV-2 Infection of Airway Epithelium Triggers Pulmonary Endothelial Cell Activation and Senescence Associated with Type I IFN Production.

    Bordoni, Veronica / Mariotti, Davide / Matusali, Giulia / Colavita, Francesca / Cimini, Eleonora / Ippolito, Giuseppe / Agrati, Chiara

    Cells

    2022  Volume 11, Issue 18

    Abstract: Airway epithelial cells represent the main target of SARS-CoV-2 replication but several pieces of evidence suggest that endothelial cells (ECs), lining pulmonary blood vessels, are key players in lung injury in COVID-19 patients. Although in vivo ... ...

    Abstract Airway epithelial cells represent the main target of SARS-CoV-2 replication but several pieces of evidence suggest that endothelial cells (ECs), lining pulmonary blood vessels, are key players in lung injury in COVID-19 patients. Although in vivo evidence of SARS-CoV-2 affecting the vascular endothelium exists, in vitro data are limited. In the present study, we set up an organotypic model to dissect the crosstalk between airway epithelium and pulmonary endothelial cells during SARS-CoV-2 infection. We showed that SARS-CoV-2 infected airway epithelium triggers the induction of endothelial adhesion molecules in ECs, suggesting a bystander effect of dangerous soluble signals from the infected epithelium. The endothelial activation was correlated with inflammatory cytokines (IL-1β, IL-6, IL-8) and with the viral replication in the airway epithelium. Interestingly, SARS-CoV-2 infection determined a modulation of endothelial p21, which could be partially reversed by inhibiting IFN-β production from ECs when co-cultured with HAE. Altogether, we demonstrated that SARS-CoV-2 infected epithelium triggers activation/senescence processes in ECs involving type I IFN-β production, suggesting possible antiviral/damage mechanisms occurring in the endothelium.
    MeSH term(s) COVID-19/immunology ; Cellular Senescence ; Endothelial Cells/immunology ; Epithelium ; Humans ; Interferon Type I/immunology ; Interleukin-6 ; Interleukin-8 ; Lung ; SARS-CoV-2
    Chemical Substances Interferon Type I ; Interleukin-6 ; Interleukin-8
    Language English
    Publishing date 2022-09-17
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells11182912
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Development and validation of a nanoplate-based digital PCR assay for absolute MPXV quantification.

    Specchiarello, Eliana / Carletti, Fabrizio / Matusali, Giulia / Abbate, Isabella / Rozera, Gabriella / Minosse, Claudia / Petrivelli, Elisabetta / Ferraioli, Valeria / Sciamanna, Roberta / Maggi, Fabrizio

    Journal of virological methods

    2023  Volume 321, Page(s) 114802

    Abstract: Quantification of mpox virus (MPXV) across different human body anatomical sites can provide insights about the most likely transmission routes, so methods able to release absolute and exact quantitative values of MPXV DNA are crucial. Here, we optimized ...

    Abstract Quantification of mpox virus (MPXV) across different human body anatomical sites can provide insights about the most likely transmission routes, so methods able to release absolute and exact quantitative values of MPXV DNA are crucial. Here, we optimized a new QIAcuity digital PCR (dPCR) protocol for the detection and quantification of MPXV DNA in clinical samples and assessed the performance of the assay by comparing the results obtained in 144 biological samples with those resulting from the use of an in-house real-time PCR (qPCR). Overall, the concordance between the two assays was 95%, with samples identified concordantly as MPXV DNA positive and having a mean number of copies per μl of 1708 (95% CI: 107-2830 copies/μl). The remaining samples gave discordant results, with 5 out of 7 detected with the QIAcuity dPCR assay but not with the in-house qPCR. MPXV DNA levels measured by QIAcuity dPCR were strongly correlated with the Ct values detected by in-house qPCR and with those detected by another dPCR assay previously developed in our laboratories. The QIAcuity dPCR assay may be a robust and easy-to-perform method for MPXV DNA quantification in several biological samples.
    MeSH term(s) Humans ; Biological Assay ; DNA, Viral/genetics ; Laboratories ; Real-Time Polymerase Chain Reaction ; Mpox (monkeypox)/diagnosis ; Monkeypox virus/isolation & purification
    Chemical Substances DNA, Viral
    Language English
    Publishing date 2023-08-24
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 8013-5
    ISSN 1879-0984 ; 0166-0934
    ISSN (online) 1879-0984
    ISSN 0166-0934
    DOI 10.1016/j.jviromet.2023.114802
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: TTV and other anelloviruses: The astonishingly wide spread of a viral infection.

    Spezia, Pietro Giorgio / Focosi, Daniele / Baj, Andreina / Novazzi, Federica / Ferrante, Francesca Drago / Carletti, Fabrizio / Minosse, Claudia / Matusali, Giulia / Maggi, Fabrizio

    Aspects of molecular medicine

    2023  Volume 1, Page(s) None

    Abstract: The broad family of viruses known as anelloviruses (AV) infects both humans and numerous animal species. They have a tiny, covalently closed single-stranded DNA genome and the astonishing capacity to infect a very high percentage of healthy and ill ... ...

    Abstract The broad family of viruses known as anelloviruses (AV) infects both humans and numerous animal species. They have a tiny, covalently closed single-stranded DNA genome and the astonishing capacity to infect a very high percentage of healthy and ill people with chronic infections that could last a lifetime. AV, and particularly the prototype Torquetenovirus, have established a successful interaction with the host's immune system and the rate at which they replicate is a gauge to measure overall immune function, even though many aspects of their life cycle and pathogenesis are still poorly understood.
    Language English
    Publishing date 2023-02-16
    Publishing country Netherlands
    Document type Journal Article ; Review
    ISSN 2949-6888
    ISSN (online) 2949-6888
    DOI 10.1016/j.amolm.2023.100006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Asymptomatic Mpox Virus Infection in Subjects Presenting for MVA-BN Vaccine.

    Matusali, Giulia / Mazzotta, Valentina / Piselli, Pierluca / Bettini, Aurora / Colavita, Francesca / Coen, Sabrina / Vaia, Francesco / Girardi, Enrico / Antinori, Andrea / Maggi, Fabrizio

    Clinical infectious diseases : an official publication of the Infectious Diseases Society of America

    2023  Volume 77, Issue 10, Page(s) 1483–1484

    MeSH term(s) Humans ; Monkeypox virus/immunology ; Mpox (monkeypox) ; Smallpox Vaccine/immunology ; Vaccinia virus/immunology ; Antibodies, Neutralizing
    Chemical Substances smallpox and monkeypox vaccine modified vaccinia ankara-bavarian nordic (TU8J357395) ; Smallpox Vaccine ; Antibodies, Neutralizing
    Language English
    Publishing date 2023-07-03
    Publishing country United States
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 1099781-7
    ISSN 1537-6591 ; 1058-4838
    ISSN (online) 1537-6591
    ISSN 1058-4838
    DOI 10.1093/cid/ciad414
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Concomitant Syndromic Diagnosis of Mpox and Other Vesicular Viruses in Patients with Skin and Genital Lesions.

    Valli, Maria Beatrice / Vulcano, Antonella / Rueca, Martina / Matusali, Giulia / Mazzotta, Valentina / Nicastri, Emanuele / Girardi, Enrico / Fontana, Carla / Antinori, Andrea / Maggi, Fabrizio

    Pathogens (Basel, Switzerland)

    2024  Volume 13, Issue 3

    Abstract: The recent multi-country outbreak of the zoonotic monkeypox virus (MPXV) infection in humans without an epidemiological link with endemic areas has raised concerns about the route of transmission. Since the infection spread largely among men who have sex ...

    Abstract The recent multi-country outbreak of the zoonotic monkeypox virus (MPXV) infection in humans without an epidemiological link with endemic areas has raised concerns about the route of transmission. Since the infection spread largely among men who have sex with men who, in most cases, presented primary lesions of the genital and oral mucosa, sexual transmission has been proposed. In the present study, we retrospectively evaluated specimens of vesicular lesions collected from the skin and genital tract of 35 patients (23 positive and 12 negative) presenting at our Institute for monkeypox (mpox) diagnosis by using a novel molecular syndromic vesicular virus panel (VVP) assay. All MPXV-positive samples but one was confirmed; however, the viral syndromic analysis revealed that 8.6% of them were coinfected with one or more viruses, and 17% had at least a virus different from the MPXV. The percentage of coinfections increased to more than 25% when nonviral pathogens, such as gonorrhea and syphilis, were also considered. These results show the usefulness of syndromic diagnosis in cases where MPXV is suspected (and vice versa) and at the same time highlight that the broader screening of sexually transmitted infections in the population with high-risk sexual behavior is critical to ensure a complete etiology and appropriate treatment.
    Language English
    Publishing date 2024-02-27
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2695572-6
    ISSN 2076-0817
    ISSN 2076-0817
    DOI 10.3390/pathogens13030207
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Effect of chemical and physical agents on monkeypox virus infectivity and downstream research applications.

    Mariotti, Davide / Bettini, Aurora / Meschi, Silvia / Notari, Stefania / Francalancia, Massimo / Tartaglia, Eleonora / Lapa, Daniele / Specchiarello, Eliana / Girardi, Enrico / Matusali, Giulia / Maggi, Fabrizio

    Virology

    2024  Volume 592, Page(s) 109993

    Abstract: The 2022 global spread of Monkeypox Virus (MPXV) underlined the need to investigate safe-handling procedures of clinical and research samples. Here we evaluated the efficiency in reducing MPXV infectious titer of Triton X-100 (0.1 and 0.2%), UV-C ... ...

    Abstract The 2022 global spread of Monkeypox Virus (MPXV) underlined the need to investigate safe-handling procedures of clinical and research samples. Here we evaluated the efficiency in reducing MPXV infectious titer of Triton X-100 (0.1 and 0.2%), UV-C irradiation (15 or 30 min), and heat (56 °C 30 min or 70 °C 5 min). The treatment of MPXV at 70 °C resulted in the strongest decrease of MPXV infectious titer (5.4 Log TCID50/mL), 56 °C and UV-C had a lighter impact (3.9 and 4.3Log), Triton X-100 was less efficient (1.8-2.5Log). Notably, SARS-CoV-2 was much more susceptible to Triton X-100 (4.0 Log decrease). UV-C had the highest impact on MPXV DNA detection by PCR (2.2-4.3 Ct value increase); protein detection by ELISA was dramatically impaired by heating. Overall, UV-C and heating were more effective in lowering MPXV infectious titer but their impact on nucleic acids or protein detection assays must be considered.
    MeSH term(s) Humans ; Monkeypox virus/genetics ; Mpox (monkeypox) ; Octoxynol ; SARS-CoV-2
    Chemical Substances Octoxynol (9002-93-1)
    Language English
    Publishing date 2024-01-16
    Publishing country United States
    Document type Journal Article
    ZDB-ID 200425-2
    ISSN 1096-0341 ; 0042-6822
    ISSN (online) 1096-0341
    ISSN 0042-6822
    DOI 10.1016/j.virol.2024.109993
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: B-cell-depleted patients with persistent SARS-CoV-2 infection: combination therapy or monotherapy? A real-world experience.

    D'Abramo, Alessandra / Vita, Serena / Beccacece, Alessia / Navarra, Assunta / Pisapia, Raffaella / Fusco, Francesco Maria / Matusali, Giulia / Girardi, Enrico / Maggi, Fabrizio / Goletti, Delia / Nicastri, Emanuele

    Frontiers in medicine

    2024  Volume 11, Page(s) 1344267

    Abstract: Objectives: The aim of the study was to describe a cohort of B-cell-depleted immunocompromised (IC) patients with prolonged or relapsing COVID-19 treated with monotherapy or combination therapy.: Methods: This is a multicenter observational ... ...

    Abstract Objectives: The aim of the study was to describe a cohort of B-cell-depleted immunocompromised (IC) patients with prolonged or relapsing COVID-19 treated with monotherapy or combination therapy.
    Methods: This is a multicenter observational retrospective study conducted on IC patients consecutively hospitalized with a prolonged or relapsing SARS-CoV-2 infection from November 2020 to January 2023. IC COVID-19 subjects were stratified according to the monotherapy or combination anti-SARS-CoV-2 therapy received.
    Results: Eighty-eight patients were enrolled, 19 under monotherapy and 69 under combination therapy. The study population had a history of immunosuppression (median of 2 B-cells/mm
    Conclusion: In IC persistent COVID-19 patients, it is essential to explore new therapeutic strategies such as combination multi-target therapy (antiviral or double antiviral plus antibody-based therapies) to avoid persistent viral shedding and/or severe SARS-CoV-2 infection.
    Language English
    Publishing date 2024-02-29
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2775999-4
    ISSN 2296-858X
    ISSN 2296-858X
    DOI 10.3389/fmed.2024.1344267
    Database MEDical Literature Analysis and Retrieval System OnLINE

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