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  1. Artikel ; Online: Sensing extracellular ATP boosts memory T cell commitment.

    Zhou, Dingxi / Borsa, Mariana

    Nature reviews. Immunology

    2021  Band 21, Heft 8, Seite(n) 473

    Sprache Englisch
    Erscheinungsdatum 2021-07-10
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2062776-2
    ISSN 1474-1741 ; 1474-1733
    ISSN (online) 1474-1741
    ISSN 1474-1733
    DOI 10.1038/s41577-021-00586-z
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Dissertation / Habilitation ; Online: Impact of asymmetric cell division on T cell differentiation

    Borsa, Mariana

    2018  

    Abstract: Successful immune responses rely on diversity. Being equipped with highly variable T cell receptors (TCRs), which convey antigen specificity, CD8+ T cells exhibit an immense repertoire of different naïve cells even before antigen encounter, but for an ... ...

    Abstract Successful immune responses rely on diversity. Being equipped with highly variable T cell receptors (TCRs), which convey antigen specificity, CD8+ T cells exhibit an immense repertoire of different naïve cells even before antigen encounter, but for an immune response to be effective, both clonal expansion, and differentiation must take place. Upon cognate antigen activation, one single naïve CD8+ T cell can give rise to different progenies, including effector and memory cells. How this diversity is generated, is still a phenomenon incompletely elucidated, but some mechanisms were reported to be involved in fate determination, such as differential strength of TCR activation, and differential exposure to inflammatory stimuli, leading to differential transcriptional and metabolic profiles, epigenetic control of gene expression, and asymmetric cell division (ACD). Concerning ACD as a means to foster diversification, most studies were limited to describe the mitotic polarization of a variety of components in activated naïve T lymphocytes, leading to the rise of two daughter cells inheriting distinct potential fates. We set out to study whether the ability to undergo ACD is limited to certain CD8+ T cell subsets and developed a strategy to modulate ACD rates. Using the murine Lymphocytic Choriomeningitis virus (LCMV) infection model, we established a correlation between ACD and cellular stemness, as naïve and memory CD8+ T cells (which exhibit stemness in terms of self-maintenance and being able to generate progenies with different fates) were found to divide asymmetrically, while terminally differentiated cells, as short-lived effector and exhausted cells, lacked this ability. ACD modulation was achieved by transient mTOR inhibition, leading to higher ACD rates in naïve and memory cells, and reestablishment of ACD in pre-terminally exhausted PD-1int CD8+ T cells. The ability to undergo ACD correlated with memory potential. Upon adoptive transfer, progenies of mTOR-inhibited LCMV-specific TCR transgenic P14 cells, ...
    Schlagwörter T cell differentiation ; T cell memory ; asymmetric cell division ; info:eu-repo/classification/ddc/570 ; Life sciences
    Thema/Rubrik (Code) 570
    Sprache Englisch
    Verlag ETH Zurich
    Erscheinungsland ch
    Dokumenttyp Dissertation / Habilitation ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: Fine-tuning stemness.

    Borsa, Mariana / Simon, Anna Katharina

    Science (New York, N.Y.)

    2020  Band 369, Heft 6502, Seite(n) 373–374

    Mesh-Begriff(e) Chaperone-Mediated Autophagy ; Embryonic Stem Cells
    Sprache Englisch
    Erscheinungsdatum 2020-07-23
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't ; Comment
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.abd1431
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Attacking the defence: SARS-CoV-2 can infect immune cells.

    Borsa, Mariana / Mazet, Julie M

    Nature reviews. Immunology

    2020  Band 20, Heft 10, Seite(n) 592

    Schlagwörter covid19
    Sprache Englisch
    Erscheinungsdatum 2020-08-19
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2062776-2
    ISSN 1474-1741 ; 1474-1733
    ISSN (online) 1474-1741
    ISSN 1474-1733
    DOI 10.1038/s41577-020-00439-1
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel ; Online: Getting to the (germinal) centre of SARS-CoV-2.

    Richter, Felix Clemens / Borsa, Mariana

    Nature reviews. Immunology

    2020  Band 20, Heft 10, Seite(n) 590

    Schlagwörter covid19
    Sprache Englisch
    Erscheinungsdatum 2020-08-11
    Erscheinungsland England
    Dokumenttyp Journal Article ; Comment
    ZDB-ID 2062776-2
    ISSN 1474-1741 ; 1474-1733
    ISSN (online) 1474-1741
    ISSN 1474-1733
    DOI 10.1038/s41577-020-00424-8
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: Hallmarks and detection techniques of cellular senescence and cellular ageing in immune cells.

    Zhou, Dingxi / Borsa, Mariana / Simon, Anna Katharina

    Aging cell

    2021  Band 20, Heft 2, Seite(n) e13316

    Abstract: The ageing of the global population brings about unprecedented challenges. Chronic age-related diseases in an increasing number of people represent an enormous burden for health and social care. The immune system deteriorates during ageing and ... ...

    Abstract The ageing of the global population brings about unprecedented challenges. Chronic age-related diseases in an increasing number of people represent an enormous burden for health and social care. The immune system deteriorates during ageing and contributes to many of these age-associated diseases due to its pivotal role in pathogen clearance, tissue homeostasis and maintenance. Moreover, in order to develop treatments for COVID-19, we urgently need to acquire more knowledge about the aged immune system, as older adults are disproportionally and more severely affected. Changes with age lead to impaired responses to infections, malignancies and vaccination, and are accompanied by chronic, low-degree inflammation, which together is termed immunosenescence. However, the molecular and cellular mechanisms that underlie immunosenescence, termed immune cell senescence, are mostly unknown. Cellular senescence, characterised by an irreversible cell cycle arrest, is thought to be the cause of tissue and organismal ageing. Thus, better understanding of cellular senescence in immune populations at single-cell level may provide us with insight into how immune cell senescence develops over the life time of an individual. In this review, we will briefly introduce the phenotypic characterisation of aged innate and adaptive immune cells, which also contributes to overall immunosenescence, including subsets and function. Next, we will focus on the different hallmarks of cellular senescence and cellular ageing, and the detection techniques most suitable for immune cells. Applying these techniques will deepen our understanding of immune cell senescence and to discover potential druggable pathways, which can be modulated to reverse immune ageing.
    Mesh-Begriff(e) Animals ; Biomarkers/metabolism ; Cellular Senescence ; Humans ; Immunosenescence ; Leukocytes/physiology ; Oxidative Stress ; Proteostasis
    Chemische Substanzen Biomarkers
    Sprache Englisch
    Erscheinungsdatum 2021-02-01
    Erscheinungsland England
    Dokumenttyp Journal Article ; Review
    ZDB-ID 2113083-8
    ISSN 1474-9726 ; 1474-9718
    ISSN (online) 1474-9726
    ISSN 1474-9718
    DOI 10.1111/acel.13316
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel ; Online: Getting to the (germinal) centre of SARS-CoV-2

    Richter, Felix Clemens / Borsa, Mariana

    Nature Reviews Immunology

    2020  Band 20, Heft 10, Seite(n) 590–590

    Schlagwörter Immunology ; covid19
    Sprache Englisch
    Verlag Springer Science and Business Media LLC
    Erscheinungsland us
    Dokumenttyp Artikel ; Online
    ZDB-ID 2062776-2
    ISSN 1474-1741 ; 1474-1733
    ISSN (online) 1474-1741
    ISSN 1474-1733
    DOI 10.1038/s41577-020-00424-8
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  8. Artikel ; Online: Attacking the defence

    Borsa, Mariana / Mazet, Julie M.

    Nature Reviews Immunology

    SARS-CoV-2 can infect immune cells

    2020  Band 20, Heft 10, Seite(n) 592–592

    Schlagwörter Immunology ; covid19
    Sprache Englisch
    Verlag Springer Science and Business Media LLC
    Erscheinungsland us
    Dokumenttyp Artikel ; Online
    ZDB-ID 2062776-2
    ISSN 1474-1741 ; 1474-1733
    ISSN (online) 1474-1741
    ISSN 1474-1733
    DOI 10.1038/s41577-020-00439-1
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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