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  1. Article ; Online: Exosomes and Their Role in the Life Cycle and Pathogenesis of RNA Viruses.

    Chahar, Harendra Singh / Bao, Xiaoyong / Casola, Antonella

    Viruses

    2015  Volume 7, Issue 6, Page(s) 3204–3225

    Abstract: ... the role of exosomes in RNA virus infections with an emphasis on their potential contribution ... Their role in viral infections is just beginning to be appreciated. RNA viruses are an important class ... that exosomes released from infected cells harbor and deliver many regulatory factors including viral RNA and ...

    Abstract Exosomes are membrane-enclosed vesicles actively released into the extracellular space, whose content reflect the physiological/pathological state of the cells they originate from. These vesicles participate in cell-to-cell communication and transfer of biologically active proteins, lipids, and RNAs. Their role in viral infections is just beginning to be appreciated. RNA viruses are an important class of pathogens and affect millions of people worldwide. Recent studies on Human Immunodeficiency Virus (HIV), Hepatitis C Virus (HCV), human T-cell lymphotropic virus (HTLV), and Dengue Virus (DENV) have demonstrated that exosomes released from infected cells harbor and deliver many regulatory factors including viral RNA and proteins, viral and cellular miRNA, and other host functional genetic elements to neighboring cells, helping to establish productive infections and modulating cellular responses. Exosomes can either spread or limit an infection depending on the type of pathogen and target cells, and can be exploited as candidates for development of antiviral or vaccine treatments. This review summarizes recent progress made in understanding the role of exosomes in RNA virus infections with an emphasis on their potential contribution to pathogenesis.
    MeSH term(s) Biological Transport ; Exosomes/metabolism ; Humans ; RNA Viruses/pathogenicity ; RNA Viruses/physiology ; RNA, Viral/metabolism ; Viral Proteins/metabolism
    Chemical Substances RNA, Viral ; Viral Proteins
    Language English
    Publishing date 2015-06-19
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v7062770
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Exosomes and Their Role in the Life Cycle and Pathogenesis of RNA Viruses

    Harendra Singh Chahar / Xiaoyong Bao / Antonella Casola

    Viruses, Vol 7, Iss 6, Pp 3204-

    2015  Volume 3225

    Abstract: ... the role of exosomes in RNA virus infections with an emphasis on their potential contribution ... Their role in viral infections is just beginning to be appreciated. RNA viruses are an important class ... that exosomes released from infected cells harbor and deliver many regulatory factors including viral RNA and ...

    Abstract Exosomes are membrane-enclosed vesicles actively released into the extracellular space, whose content reflect the physiological/pathological state of the cells they originate from. These vesicles participate in cell-to-cell communication and transfer of biologically active proteins, lipids, and RNAs. Their role in viral infections is just beginning to be appreciated. RNA viruses are an important class of pathogens and affect millions of people worldwide. Recent studies on Human Immunodeficiency Virus (HIV), Hepatitis C Virus (HCV), human T-cell lymphotropic virus (HTLV), and Dengue Virus (DENV) have demonstrated that exosomes released from infected cells harbor and deliver many regulatory factors including viral RNA and proteins, viral and cellular miRNA, and other host functional genetic elements to neighboring cells, helping to establish productive infections and modulating cellular responses. Exosomes can either spread or limit an infection depending on the type of pathogen and target cells, and can be exploited as candidates for development of antiviral or vaccine treatments. This review summarizes recent progress made in understanding the role of exosomes in RNA virus infections with an emphasis on their potential contribution to pathogenesis.
    Keywords exosomes ; microvesicles ; RNA virus ; pathogenesis ; miRNA ; infection ; Microbiology ; QR1-502 ; Science ; Q
    Subject code 570
    Language English
    Publishing date 2015-06-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Characterization and Involvement of Exosomes Originating from Chikungunya Virus-Infected Epithelial Cells in the Transmission of Infectious Viral Elements.

    Le, Bao Chi Thi / Burassakarn, Ati / Tongchai, Panwad / Ekalaksananan, Tipaya / Aromseree, Sirinart / Phanthanawiboon, Supranee / Polsan, Yada / Alexander, Neal / Overgaard, Hans J / Pientong, Chamsai

    International journal of molecular sciences

    2022  Volume 23, Issue 20

    Abstract: ... that the CHIKV RNA and pro-teins were captured in exosomes, which were released by viral-infected ... for establishing their infection and pathogenesis. Recently, the accumulating evidence advocates a principal role ... of extracellular vesicles (EVs), including exosomes, in both the infection and pathogenesis of infectious diseases ...

    Abstract The Chikungunya virus (CHIKV) is a mosquito-borne alphavirus that affects the world's popula-tion with chikungunya disease. Adaptation of the viral life cycle to their host cells' environment is a key step for establishing their infection and pathogenesis. Recently, the accumulating evidence advocates a principal role of extracellular vesicles (EVs), including exosomes, in both the infection and pathogenesis of infectious diseases. However, the participation of exosomes in CHIKV infec-tion and transmission is not well clarified. Here, we demonstrated that the CHIKV RNA and pro-teins were captured in exosomes, which were released by viral-infected epithelial cells. A viral genomic element in the isolated exosomes was infectious to naïve mammalian epithelial cells. The assay of particle size distribution and transmission electron microscopy (TEM) revealed CHIKV-derived exosomes with a size range from 50 to 250 nm. Treatments with RNase A, Triton X-100, and immunoglobulin G antibodies from CHIKV-positive patient plasma indicated that in-fectious viral elements are encompassed inside the exosomes. Interestingly, our viral plaque for-mation also exhibited that infectious viral elements might be securely transmitted to neighboring cells by a secreted exosomal pathway. Taken together, our recent findings emphasize the evidence for a complementary means of CHIKV infection and suggest the role of exosome-mediated CHIKV transmission.
    MeSH term(s) Animals ; Humans ; Chikungunya virus/genetics ; Exosomes/pathology ; Ribonuclease, Pancreatic/metabolism ; Octoxynol ; Chikungunya Fever ; Epithelial Cells/pathology ; RNA/metabolism ; Immunoglobulin G/metabolism ; Mammals/genetics
    Chemical Substances Ribonuclease, Pancreatic (EC 3.1.27.5) ; Octoxynol (9002-93-1) ; RNA (63231-63-0) ; Immunoglobulin G
    Language English
    Publishing date 2022-10-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms232012117
    Database MEDical Literature Analysis and Retrieval System OnLINE

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