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  1. Article ; Online: Regulation of stress granule formation in human oligodendrocytes.

    Pernin, Florian / Cui, Qiao-Ling / Mohammadnia, Abdulshakour / Fernandes, Milton G F / Hall, Jeffery A / Srour, Myriam / Dudley, Roy W R / Zandee, Stephanie E J / Klement, Wendy / Prat, Alexandre / Salapa, Hannah E / Levin, Michael C / Moore, G R Wayne / Kennedy, Timothy E / Vande Velde, Christine / Antel, Jack P

    Nature communications

    2024  Volume 15, Issue 1, Page(s) 1524

    Abstract: Oligodendrocyte (OL) injury and subsequent loss is a pathologic hallmark of multiple sclerosis (MS). Stress granules (SGs) are membrane-less organelles containing mRNAs stalled in translation and considered as participants of the cellular response to ... ...

    Abstract Oligodendrocyte (OL) injury and subsequent loss is a pathologic hallmark of multiple sclerosis (MS). Stress granules (SGs) are membrane-less organelles containing mRNAs stalled in translation and considered as participants of the cellular response to stress. Here we show SGs in OLs in active and inactive areas of MS lesions as well as in normal-appearing white matter. In cultures of primary human adult brain derived OLs, metabolic stress conditions induce transient SG formation in these cells. Combining pro-inflammatory cytokines, which alone do not induce SG formation, with metabolic stress results in persistence of SGs. Unlike sodium arsenite, metabolic stress induced SG formation is not blocked by the integrated stress response inhibitor. Glycolytic inhibition also induces persistent SGs indicating the dependence of SG formation and disassembly on the energetic glycolytic properties of human OLs. We conclude that SG persistence in OLs in MS reflects their response to a combination of metabolic stress and pro-inflammatory conditions.
    MeSH term(s) Humans ; Cytoplasmic Granules/metabolism ; Stress Granules ; Oligodendroglia ; Cytokines/metabolism ; Stress, Physiological ; Multiple Sclerosis/metabolism
    Chemical Substances Cytokines
    Language English
    Publishing date 2024-02-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-024-45746-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Disease-associated astrocyte epigenetic memory promotes CNS pathology.

    Lee, Hong-Gyun / Rone, Joseph M / Li, Zhaorong / Akl, Camilo Faust / Shin, Seung Won / Lee, Joon-Hyuk / Flausino, Lucas E / Pernin, Florian / Chao, Chun-Cheih / Kleemann, Kilian L / Srun, Lena / Illouz, Tomer / Giovannoni, Federico / Charabati, Marc / Sanmarco, Liliana M / Kenison, Jessica E / Piester, Gavin / Zandee, Stephanie E J / Antel, Jack /
    Rothhammer, Veit / Wheeler, Michael A / Prat, Alexandre / Clark, Iain C / Quintana, Francisco J

    bioRxiv : the preprint server for biology

    2024  

    Abstract: Astrocytes play important roles in the central nervous system (CNS) physiology and pathology. Indeed, astrocyte subsets defined by specific transcriptional activation states contribute to the pathology of neurologic diseases, including multiple sclerosis ...

    Abstract Astrocytes play important roles in the central nervous system (CNS) physiology and pathology. Indeed, astrocyte subsets defined by specific transcriptional activation states contribute to the pathology of neurologic diseases, including multiple sclerosis (MS) and its pre-clinical model experimental autoimmune encephalomyelitis (EAE)
    Language English
    Publishing date 2024-01-05
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2024.01.04.574196
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Disease-associated astrocyte epigenetic memory promotes CNS pathology.

    Lee, Hong-Gyun / Rone, Joseph M / Li, Zhaorong / Akl, Camilo Faust / Shin, Seung Won / Lee, Joon-Hyuk / Flausino, Lucas E / Pernin, Florian / Chao, Chun-Cheih / Kleemann, Kilian L / Srun, Lena / Illouz, Tomer / Giovannoni, Federico / Charabati, Marc / Sanmarco, Liliana M / Kenison, Jessica E / Piester, Gavin / Zandee, Stephanie E J / Antel, Jack P /
    Rothhammer, Veit / Wheeler, Michael A / Prat, Alexandre / Clark, Iain C / Quintana, Francisco J

    Nature

    2024  Volume 627, Issue 8005, Page(s) 865–872

    Abstract: Disease-associated astrocyte subsets contribute to the pathology of neurologic diseases, including multiple sclerosis and experimental autoimmune ... ...

    Abstract Disease-associated astrocyte subsets contribute to the pathology of neurologic diseases, including multiple sclerosis and experimental autoimmune encephalomyelitis
    MeSH term(s) Animals ; Female ; Humans ; Male ; Mice ; Acetyl Coenzyme A/metabolism ; Astrocytes/enzymology ; Astrocytes/metabolism ; Astrocytes/pathology ; ATP Citrate (pro-S)-Lyase/metabolism ; Chromatin/genetics ; Chromatin/metabolism ; Chromatin Assembly and Disassembly ; Chromatin Immunoprecipitation Sequencing ; CRISPR-Cas Systems ; Encephalomyelitis, Autoimmune, Experimental/enzymology ; Encephalomyelitis, Autoimmune, Experimental/genetics ; Encephalomyelitis, Autoimmune, Experimental/metabolism ; Encephalomyelitis, Autoimmune, Experimental/pathology ; Epigenetic Memory ; Inflammation/enzymology ; Inflammation/genetics ; Inflammation/metabolism ; Inflammation/pathology ; Multiple Sclerosis/enzymology ; Multiple Sclerosis/genetics ; Multiple Sclerosis/metabolism ; Multiple Sclerosis/pathology ; Single-Cell Gene Expression Analysis ; Transposases/metabolism
    Chemical Substances Acetyl Coenzyme A (72-89-9) ; ATP Citrate (pro-S)-Lyase (EC 2.3.3.8) ; Chromatin ; p300-CBP-associated factor (EC 2.3.1.48) ; Transposases (EC 2.7.7.-)
    Language English
    Publishing date 2024-03-20
    Publishing country England
    Document type Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-024-07187-5
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  4. Article ; Online: Diverse injury responses of human oligodendrocyte to mediators implicated in multiple sclerosis.

    Pernin, Florian / Luo, Julia / Cui, Qiao-Ling / Blain, Manon / Fernandes, Milton G F / Yaqubi, Moein / Srour, Myriam / Hall, Jeff / Dudley, Roy / Jamann, Hélène / Larochelle, Catherine / Zandee, Stephanie E J / Prat, Alexandre / Stratton, Jo Anne / Kennedy, Timothy E / Antel, Jack P

    Brain : a journal of neurology

    2022  

    Abstract: Early multiple sclerosis lesions feature relative preservation of oligodendrocyte cell bodies with dying back retraction of their myelinating processes. Cell loss occurs with disease progression. Putative injury mediators include metabolic stress (low ... ...

    Abstract Early multiple sclerosis lesions feature relative preservation of oligodendrocyte cell bodies with dying back retraction of their myelinating processes. Cell loss occurs with disease progression. Putative injury mediators include metabolic stress (low glucose/nutrient), pro-inflammatory mediators (interferon γ and tumor necrosis factor α), and excitotoxins (glutamate). Our objective was to compare the impact of these disease relevant mediators on the injury responses of human mature oligodendrocytes. In the current study, we determined the effects of these mediators on process extension and survival of human brain derived mature oligodendrocytes in vitro and used bulk RNA sequencing to identify distinct effector mechanisms that underlie the responses. All mediators induced significant process retraction of the oligodendrocytes in dissociated cell culture. Only metabolic stress (low glucose/nutrient) conditions resulted in delayed (4-6 days) non-apoptotic cell death. Metabolic effects were associated with induction of the integrated stress response, which can be protective or contribute to cell injury dependent on its level and duration of activation. Addition of Sephin1, an agonist of the integrated stress response induced process retraction under control conditions and further enhanced retraction under metabolic stress conditions. The antagonist ISRIB restored process outgrowth under stress conditions, and if added to already stressed cells, reduced delayed cell death and prolonged the period in which recovery could occur. Inflammatory cytokine functional effects were associated with activation of multiple signaling pathways (including Jak/Stat-1) that regulate process outgrowth, without integrated stress response induction. Glutamate application produced limited transcriptional changes suggesting a contribution of effects directly on cell processes. Our comparative studies indicate the need to consider both the specific injury mediators and the distinct cellular mechanisms of responses to them by human oligodendrocytes to identify effective neuroprotective therapies for multiple sclerosis.
    Language English
    Publishing date 2022-02-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 80072-7
    ISSN 1460-2156 ; 0006-8950
    ISSN (online) 1460-2156
    ISSN 0006-8950
    DOI 10.1093/brain/awac075
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Mechanisms of metabolic stress induced cell death of human oligodendrocytes: relevance for progressive multiple sclerosis.

    Fernandes, Milton Guilherme Forestieri / Mohammadnia, Abdulshakour / Pernin, Florian / Schmitz-Gielsdorf, Laura Eleonora / Hodgins, Caroline / Cui, Qiao-Ling / Yaqubi, Moein / Blain, Manon / Hall, Jeffery / Dudley, Roy / Srour, Myriam / Zandee, Stephanie E J / Klement, Wendy / Prat, Alexandre / Stratton, Jo Anne / Rodriguez, Moses / Kuhlmann, Tanja / Moore, Wayne / Kennedy, Timothy E /
    Antel, Jack P

    Acta neuropathologica communications

    2023  Volume 11, Issue 1, Page(s) 108

    Abstract: Oligodendrocyte (OL) injury and loss are central features of evolving lesions in multiple sclerosis. Potential causative mechanisms of OL loss include metabolic stress within the lesion microenvironment. Here we use the injury response of primary human ... ...

    Abstract Oligodendrocyte (OL) injury and loss are central features of evolving lesions in multiple sclerosis. Potential causative mechanisms of OL loss include metabolic stress within the lesion microenvironment. Here we use the injury response of primary human OLs (hOLs) to metabolic stress (reduced glucose/nutrients) in vitro to help define the basis for the in situ features of OLs in cases of MS. Under metabolic stress in vitro, we detected reduction in ATP levels per cell that precede changes in survival. Autophagy was initially activated, although ATP levels were not altered by inhibitors (chloroquine) or activators (Torin-1). Prolonged stress resulted in autophagy failure, documented by non-fusion of autophagosomes and lysosomes. Consistent with our in vitro results, we detected higher expression of LC3, a marker of autophagosomes in OLs, in MS lesions compared to controls. Both in vitro and in situ, we observe a reduction in nuclear size of remaining OLs. Prolonged stress resulted in increased ROS and cleavage of spectrin, a target of Ca
    MeSH term(s) Humans ; Multiple Sclerosis/pathology ; Reactive Oxygen Species/metabolism ; Oligodendroglia/pathology ; Cell Death ; Multiple Sclerosis, Chronic Progressive/pathology ; Adenosine Triphosphate/metabolism
    Chemical Substances Reactive Oxygen Species ; Adenosine Triphosphate (8L70Q75FXE)
    Language English
    Publishing date 2023-07-05
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2715589-4
    ISSN 2051-5960 ; 2051-5960
    ISSN (online) 2051-5960
    ISSN 2051-5960
    DOI 10.1186/s40478-023-01601-1
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  6. Article ; Online: Identification of astrocyte regulators by nucleic acid cytometry.

    Clark, Iain C / Wheeler, Michael A / Lee, Hong-Gyun / Li, Zhaorong / Sanmarco, Liliana M / Thaploo, Shravan / Polonio, Carolina M / Shin, Seung Won / Scalisi, Giulia / Henry, Amy R / Rone, Joseph M / Giovannoni, Federico / Charabati, Marc / Akl, Camilo Faust / Aleman, Dulce M / Zandee, Stephanie E J / Prat, Alexandre / Douek, Daniel C / Boritz, Eli A /
    Quintana, Francisco J / Abate, Adam R

    Nature

    2023  Volume 614, Issue 7947, Page(s) 326–333

    Abstract: Multiple sclerosis is a chronic inflammatory disease of the central nervous ... ...

    Abstract Multiple sclerosis is a chronic inflammatory disease of the central nervous system
    MeSH term(s) Animals ; Humans ; Mice ; Astrocytes/metabolism ; Astrocytes/pathology ; Encephalomyelitis, Autoimmune, Experimental ; Gene Expression Regulation ; Mice, Knockout ; Multiple Sclerosis/pathology ; Microfluidics/methods ; Single-Cell Gene Expression Analysis/methods ; Nucleic Acids/analysis ; Gene Editing
    Chemical Substances Xbp1 protein, mouse ; Nucleic Acids ; NR3C2 protein, human ; NCOR2 protein, human ; XBP1 protein, human ; Nr3c2 protein, mouse ; Ncor2 protein, mouse
    Language English
    Publishing date 2023-01-04
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-022-05613-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Stress Signal ULBP4, an NKG2D Ligand, Is Upregulated in Multiple Sclerosis and Shapes CD8

    Carmena Moratalla, Ana / Carpentier Solorio, Yves / Lemaitre, Florent / Farzam-Kia, Negar / Levert, Annie / Zandee, Stephanie E J / Lahav, Boaz / Guimond, Jean Victor / Haddad, Elie / Girard, Marc / Duquette, Pierre / Larochelle, Catherine / Prat, Alexandre / Arbour, Nathalie

    Neurology(R) neuroimmunology & neuroinflammation

    2021  Volume 9, Issue 1

    Abstract: Background and objectives: We posit the involvement of the natural killer group 2D (NKG2D) pathway in multiple sclerosis (MS) pathology via the presence of specific NKG2D ligands (NKG2DLs). We aim to evaluate the expression of NKG2DLs in the CNS and CSF ...

    Abstract Background and objectives: We posit the involvement of the natural killer group 2D (NKG2D) pathway in multiple sclerosis (MS) pathology via the presence of specific NKG2D ligands (NKG2DLs). We aim to evaluate the expression of NKG2DLs in the CNS and CSF of patients with MS and to identify cellular stressors inducing the expression of UL16-binding protein 4 (ULBP4), the only detectable NKG2DL. Finally, we evaluate the impact of ULBP4 on functions such as cytokine production and motility by CD8
    Methods: Human postmortem brain samples and CSF from patients with MS and controls were used to evaluate NKG2DL expression. In vitro assays using primary cultures of human astrocytes and neurons were performed to identify stressors inducing ULBP4 expression. Human CD8
    Results: We detected mRNA coding for the 8 identified human NKG2DLs in brain samples from patients with MS and controls, but only ULBP4 protein expression was detectable by Western blot. ULBP4 levels were greater in patients with MS, particularly in active and chronic active lesions and normal-appearing white matter, compared with normal-appearing gray matter from MS donors and white and gray matter from controls. Soluble ULBP4 was also detected in CSF of patients with MS and controls, but a smaller shed/soluble form of 25 kDa was significantly elevated in CSF from female patients with MS compared with controls and male patients with MS. Our data indicate that soluble ULBP4 affects various functions of CD8
    Discussion: Our study provides new evidence for the involvement of NKG2D and its ligand ULBP4 in MS pathology. Our results point to ULBP4 as a viable target to specifically block 1 component of the NKG2D pathway without altering immune surveillance involving other NKG2DL.
    MeSH term(s) Astrocytes ; Autopsy ; Brain/metabolism ; Brain/pathology ; CD8-Positive T-Lymphocytes ; Carrier Proteins/cerebrospinal fluid ; Carrier Proteins/metabolism ; Cells, Cultured ; Fetus ; Histocompatibility Antigens Class I/cerebrospinal fluid ; Histocompatibility Antigens Class I/metabolism ; Humans ; Membrane Proteins/cerebrospinal fluid ; Membrane Proteins/metabolism ; Multiple Sclerosis/cerebrospinal fluid ; Multiple Sclerosis/immunology ; Multiple Sclerosis/metabolism ; NK Cell Lectin-Like Receptor Subfamily K/metabolism ; Neurons ; Stress, Physiological/immunology ; Stress, Physiological/physiology ; Up-Regulation ; White Matter/metabolism
    Chemical Substances Carrier Proteins ; Histocompatibility Antigens Class I ; KLRK1 protein, human ; Membrane Proteins ; NK Cell Lectin-Like Receptor Subfamily K ; RAET1E protein, human
    Language English
    Publishing date 2021-12-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2767740-0
    ISSN 2332-7812 ; 2332-7812
    ISSN (online) 2332-7812
    ISSN 2332-7812
    DOI 10.1212/NXI.0000000000001119
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Droplet-based forward genetic screening of astrocyte-microglia cross-talk.

    Wheeler, Michael A / Clark, Iain C / Lee, Hong-Gyun / Li, Zhaorong / Linnerbauer, Mathias / Rone, Joseph M / Blain, Manon / Akl, Camilo Faust / Piester, Gavin / Giovannoni, Federico / Charabati, Marc / Lee, Joon-Hyuk / Kye, Yoon-Chul / Choi, Joshua / Sanmarco, Liliana M / Srun, Lena / Chung, Elizabeth N / Flausino, Lucas E / Andersen, Brian M /
    Rothhammer, Veit / Yano, Hiroshi / Illouz, Tomer / Zandee, Stephanie E J / Daniel, Carolin / Artis, David / Prinz, Marco / Abate, Adam R / Kuchroo, Vijay K / Antel, Jack P / Prat, Alexandre / Quintana, Francisco J

    Science (New York, N.Y.)

    2023  Volume 379, Issue 6636, Page(s) 1023–1030

    Abstract: Cell-cell interactions in the central nervous system play important roles in neurologic diseases. However, little is known about the specific molecular pathways involved, and methods for their systematic identification are limited. Here, we developed a ... ...

    Abstract Cell-cell interactions in the central nervous system play important roles in neurologic diseases. However, little is known about the specific molecular pathways involved, and methods for their systematic identification are limited. Here, we developed a forward genetic screening platform that combines CRISPR-Cas9 perturbations, cell coculture in picoliter droplets, and microfluidic-based fluorescence-activated droplet sorting to identify mechanisms of cell-cell communication. We used SPEAC-seq (systematic perturbation of encapsulated associated cells followed by sequencing), in combination with in vivo genetic perturbations, to identify microglia-produced amphiregulin as a suppressor of disease-promoting astrocyte responses in multiple sclerosis preclinical models and clinical samples. Thus, SPEAC-seq enables the high-throughput systematic identification of cell-cell communication mechanisms.
    MeSH term(s) Astrocytes/physiology ; Genetic Testing/methods ; High-Throughput Screening Assays ; Microfluidic Analytical Techniques/methods ; Microglia/physiology ; Amphiregulin/genetics ; Autocrine Communication/genetics ; Gene Expression ; Humans
    Chemical Substances Amphiregulin
    Language English
    Publishing date 2023-03-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.abq4822
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  9. Article ; Online: Gut-licensed IFNγ

    Sanmarco, Liliana M / Wheeler, Michael A / Gutiérrez-Vázquez, Cristina / Polonio, Carolina Manganeli / Linnerbauer, Mathias / Pinho-Ribeiro, Felipe A / Li, Zhaorong / Giovannoni, Federico / Batterman, Katelyn V / Scalisi, Giulia / Zandee, Stephanie E J / Heck, Evelyn S / Alsuwailm, Moneera / Rosene, Douglas L / Becher, Burkhard / Chiu, Isaac M / Prat, Alexandre / Quintana, Francisco J

    Nature

    2021  Volume 590, Issue 7846, Page(s) 473–479

    Abstract: Astrocytes are glial cells that are abundant in the central nervous system (CNS) and that have important homeostatic and disease-promoting ... ...

    Abstract Astrocytes are glial cells that are abundant in the central nervous system (CNS) and that have important homeostatic and disease-promoting functions
    MeSH term(s) Animals ; Apoptosis ; Astrocytes/immunology ; Astrocytes/metabolism ; Biomarkers ; Central Nervous System/immunology ; Encephalomyelitis, Autoimmune, Experimental/immunology ; Encephalomyelitis, Autoimmune, Experimental/prevention & control ; Female ; Gastrointestinal Microbiome/immunology ; Homeostasis ; Humans ; Inflammation/immunology ; Inflammation/prevention & control ; Interferon-gamma/immunology ; Killer Cells, Natural/immunology ; Lysosomal Membrane Proteins/metabolism ; Meninges/cytology ; Meninges/immunology ; Mice ; Mice, Inbred C57BL ; T-Lymphocytes/cytology ; T-Lymphocytes/immunology ; TNF-Related Apoptosis-Inducing Ligand/metabolism
    Chemical Substances Biomarkers ; Lamp1 protein, mouse ; Lysosomal Membrane Proteins ; TNF-Related Apoptosis-Inducing Ligand ; TNFSF10 protein, human ; Tnfsf10 protein, mouse ; Interferon-gamma (82115-62-6)
    Language English
    Publishing date 2021-01-06
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-020-03116-4
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  10. Article: A Context-Dependent Role for αv Integrins in Regulatory T Cell Accumulation at Sites of Inflammation.

    Mair, Iris / Zandee, Stephanie E J / Toor, Iqbal S / Saul, Louise / McPherson, Rhoanne C / Leech, Melanie D / Smyth, Danielle J / O'Connor, Richard A / Henderson, Neil C / Anderton, Stephen M

    Frontiers in immunology

    2018  Volume 9, Page(s) 264

    Abstract: Several inflammatory diseases including multiple sclerosis and inflammatory bowel disease have been associated with dysfunctional and/or reduced numbers of ... ...

    Abstract Several inflammatory diseases including multiple sclerosis and inflammatory bowel disease have been associated with dysfunctional and/or reduced numbers of Foxp3
    MeSH term(s) Animals ; Autoimmune Diseases/immunology ; Colitis/immunology ; Encephalomyelitis, Autoimmune, Experimental/immunology ; Inflammation/immunology ; Integrin alphaV/immunology ; Mice ; Mice, Knockout ; T-Lymphocytes, Regulatory/immunology
    Chemical Substances Integrin alphaV
    Language English
    Publishing date 2018-02-26
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2018.00264
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