LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 47

Search options

  1. Article ; Online: Hyperosmotic stress response regulates interstitial homeostasis and pathogenic inflammation.

    Sumida, Tomokazu S

    Journal of biochemistry

    2023  Volume 173, Issue 3, Page(s) 159–166

    Abstract: Hyperosmotic stress triggers an evolutionally preserved, fundamental cellular response. A growing body of evidence has highlighted the role of extra-renal, interstitial hyperosmolality in maintaining local tissue immune homeostasis and potentially ... ...

    Abstract Hyperosmotic stress triggers an evolutionally preserved, fundamental cellular response. A growing body of evidence has highlighted the role of extra-renal, interstitial hyperosmolality in maintaining local tissue immune homeostasis and potentially driving tissue inflammation in human diseases. The hyperosmotic stress response initiates cellular shrinkage, oxidative stress, metabolic remodeling and cell cycle arrest, all of which are adjusted by a counteractive adaptative response that includes osmolyte synthesis, upregulation of ion transporters and induction of heat shock proteins. Recent studies have revealed that high osmolality can impact immune cell differentiation and activation pathways in a cell type specific manner. The fine-tuning of the immune response depends on the tissue microenvironment. Accordingly, novel therapeutic approaches that target hyperosmolality-mediated inflammation may be identified by furthering our understanding of hyperosmotic response in the context of disease. In this review, we discuss the cellular and molecular mechanisms by which hyperosmotic stress response regulates interstitial homeostasis and pathogenic inflammation.
    MeSH term(s) Humans ; Homeostasis ; Heat-Shock Proteins/metabolism ; Kidney/metabolism ; Membrane Transport Proteins/metabolism ; Inflammation/metabolism
    Chemical Substances Heat-Shock Proteins ; Membrane Transport Proteins
    Language English
    Publishing date 2023-01-19
    Publishing country England
    Document type Review ; Journal Article
    ZDB-ID 218073-x
    ISSN 1756-2651 ; 0021-924X
    ISSN (online) 1756-2651
    ISSN 0021-924X
    DOI 10.1093/jb/mvad009
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: The regulation and differentiation of regulatory T cells and their dysfunction in autoimmune diseases.

    Sumida, Tomokazu S / Cheru, Nardos T / Hafler, David A

    Nature reviews. Immunology

    2024  

    Abstract: The discovery of ... ...

    Abstract The discovery of FOXP3
    Language English
    Publishing date 2024-02-19
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2062776-2
    ISSN 1474-1741 ; 1474-1733
    ISSN (online) 1474-1741
    ISSN 1474-1733
    DOI 10.1038/s41577-024-00994-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Population genetics meets single-cell sequencing.

    Sumida, Tomokazu S / Hafler, David A

    Science (New York, N.Y.)

    2022  Volume 376, Issue 6589, Page(s) 134–135

    Abstract: Single-cell technology can be used to understand the genetic basis of human diseases. ...

    Abstract Single-cell technology can be used to understand the genetic basis of human diseases.
    MeSH term(s) Disease/genetics ; Genetics, Population ; High-Throughput Nucleotide Sequencing ; Humans
    Language English
    Publishing date 2022-04-07
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.abq0426
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Regulatory T cells in peripheral tissue tolerance and diseases.

    Cheru, Nardos / Hafler, David A / Sumida, Tomokazu S

    Frontiers in immunology

    2023  Volume 14, Page(s) 1154575

    Abstract: Maintenance of peripheral tolerance by ... ...

    Abstract Maintenance of peripheral tolerance by CD4
    MeSH term(s) Humans ; Mice ; Animals ; T-Lymphocytes, Regulatory ; Peripheral Tolerance ; Autoimmune Diseases ; Intestinal Diseases/pathology ; Forkhead Transcription Factors/genetics
    Chemical Substances Forkhead Transcription Factors
    Language English
    Publishing date 2023-05-01
    Publishing country Switzerland
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2023.1154575
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Identity thieves: T cells steal CD20 from B cells but mark themselves for certain death.

    Sumida, Tomokazu S / O'Connor, Kevin C

    Science immunology

    2022  Volume 7, Issue 71, Page(s) eabq7242

    Abstract: T cells can acquire CD20 from B cells via trogocytosis, then contribute to autoimmune neurological disease while becoming targets for therapeutically effective B cell depletion. ...

    Abstract T cells can acquire CD20 from B cells via trogocytosis, then contribute to autoimmune neurological disease while becoming targets for therapeutically effective B cell depletion.
    MeSH term(s) Antigens, CD20 ; B-Lymphocytes ; T-Lymphocytes
    Chemical Substances Antigens, CD20
    Language English
    Publishing date 2022-05-06
    Publishing country United States
    Document type Journal Article ; Comment
    ISSN 2470-9468
    ISSN (online) 2470-9468
    DOI 10.1126/sciimmunol.abq7242
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article: Systems Analysis of Immune Changes after B-cell Depletion in Autoimmune Multiple Sclerosis.

    Wei, Jessica / Moon, Jeonghyeon / Yasumizu, Yoshiaki / Zhang, Le / Radassi, Khadir / Buitrago-Pocasangre, Nicholas / Deerhake, M Elizabeth / Strauli, Nicholas / Chan, Alan / Herman, Ann / Pedotte, Rosetta / Raposo, Catarina / Tackenberg, Björn / Yim, Isaiah / Pappalardo, Jenna / Longbrake, Erin E / Sumida, Tomokazu S / Axisa, Pierre-Paul / Hafler, David A

    bioRxiv : the preprint server for biology

    2024  

    Abstract: Multiple sclerosis (MS) is a complex genetically mediated autoimmune disease of the central nervous system where anti-CD20-mediated B cell depletion is remarkably effective in the treatment of early disease. While previous studies investigated the effect ...

    Abstract Multiple sclerosis (MS) is a complex genetically mediated autoimmune disease of the central nervous system where anti-CD20-mediated B cell depletion is remarkably effective in the treatment of early disease. While previous studies investigated the effect of B cell depletion on select immune cell subsets using flow cytometry-based methods, the therapeutic impact on patient immune landscape is unknown. In this study, we explored how a therapy-driven "
    Language English
    Publishing date 2024-02-09
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2024.02.07.576204
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article: Latent EBV impairs immune cell signaling and enhances the efficacy of anti-CD3 mAb in Type 1 Diabetes.

    Delgado, Ana Lledo / Preston-Hurlburt, Paula / Lim, Noha / Sumida, Tomokazu S / Long, S Alice / McNamara, James / Serti, Elisavet / Higdon, Lauren / Herold, Kevan C

    medRxiv : the preprint server for health sciences

    2023  

    Abstract: Teplizumab has been approved for the delay of the onset of type 1 diabetes and may modulate new onset disease. We found that patients who were EBV positive at baseline had a more robust response to drug in two clinical trials and therefore postulated ... ...

    Abstract Teplizumab has been approved for the delay of the onset of type 1 diabetes and may modulate new onset disease. We found that patients who were EBV positive at baseline had a more robust response to drug in two clinical trials and therefore postulated that latent virus has general effects in modifying immune responses. We compared the phenotypes, transcriptomes, and development of peripheral blood cells before and after teplizumab treatment. Higher number of Tregs and partially exhausted CD8
    Language English
    Publishing date 2023-07-13
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2023.07.11.23292344
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: NEBULA is a fast negative binomial mixed model for differential or co-expression analysis of large-scale multi-subject single-cell data

    Liang He / Jose Davila-Velderrain / Tomokazu S. Sumida / David A. Hafler / Manolis Kellis / Alexander M. Kulminski

    Communications Biology, Vol 4, Iss 1, Pp 1-

    2021  Volume 17

    Abstract: ... validate it on snRNA-seq and scRNA-seq data sets comprising ~200k cells from cohorts of Alzheimer’s ...

    Abstract The application of negative binomial mixed models (NBMMs) to single-cell data is computationally demanding. To address this issue, Liang He et al. have developed NEBULA, an efficient algorithm that can analyze differential gene expression or co-expression networks in multi-subject single-cell data sets, and validate it on snRNA-seq and scRNA-seq data sets comprising ~200k cells from cohorts of Alzheimer’s disease and multiple sclerosis patients.
    Keywords Biology (General) ; QH301-705.5
    Language English
    Publishing date 2021-05-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  9. Article ; Online: NEBULA is a fast negative binomial mixed model for differential or co-expression analysis of large-scale multi-subject single-cell data.

    He, Liang / Davila-Velderrain, Jose / Sumida, Tomokazu S / Hafler, David A / Kellis, Manolis / Kulminski, Alexander M

    Communications biology

    2021  Volume 4, Issue 1, Page(s) 629

    Abstract: The increasing availability of single-cell data revolutionizes the understanding of biological mechanisms at cellular resolution. For differential expression analysis in multi-subject single-cell data, negative binomial mixed models account for both ... ...

    Abstract The increasing availability of single-cell data revolutionizes the understanding of biological mechanisms at cellular resolution. For differential expression analysis in multi-subject single-cell data, negative binomial mixed models account for both subject-level and cell-level overdispersions, but are computationally demanding. Here, we propose an efficient NEgative Binomial mixed model Using a Large-sample Approximation (NEBULA). The speed gain is achieved by analytically solving high-dimensional integrals instead of using the Laplace approximation. We demonstrate that NEBULA is orders of magnitude faster than existing tools and controls false-positive errors in marker gene identification and co-expression analysis. Using NEBULA in Alzheimer's disease cohort data sets, we found that the cell-level expression of APOE correlated with that of other genetic risk factors (including CLU, CST3, TREM2, C1q, and ITM2B) in a cell-type-specific pattern and an isoform-dependent manner in microglia. NEBULA opens up a new avenue for the broad application of mixed models to large-scale multi-subject single-cell data.
    MeSH term(s) Alzheimer Disease/genetics ; Apolipoproteins E/genetics ; Binomial Distribution ; Computational Biology/methods ; Gene Expression/genetics ; Gene Expression Profiling/methods ; Humans ; Microglia/metabolism ; Models, Statistical ; Single-Cell Analysis/methods
    Chemical Substances Apolipoproteins E
    Language English
    Publishing date 2021-05-26
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ISSN 2399-3642
    ISSN (online) 2399-3642
    DOI 10.1038/s42003-021-02146-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: Single-cell profiling reveals immune aberrations in progressive idiopathic pulmonary fibrosis.

    Unterman, Avraham / Zhao, Amy Y / Neumark, Nir / Schupp, Jonas C / Ahangari, Farida / Cosme, Carlos / Sharma, Prapti / Flint, Jasper / Stein, Yan / Ryu, Changwan / Ishikawa, Genta / Sumida, Tomokazu S / Gomez, Jose L / Herazo-Maya, Jose / Dela Cruz, Charles S / Herzog, Erica L / Kaminski, Naftali

    medRxiv : the preprint server for health sciences

    2023  

    Abstract: Rationale: Changes in peripheral blood cell populations have been observed but not detailed at single-cell resolution in idiopathic pulmonary fibrosis (IPF).: Objectives: To provide an atlas of the changes in the peripheral immune system in stable ... ...

    Abstract Rationale: Changes in peripheral blood cell populations have been observed but not detailed at single-cell resolution in idiopathic pulmonary fibrosis (IPF).
    Objectives: To provide an atlas of the changes in the peripheral immune system in stable and progressive IPF.
    Methods: Peripheral blood mononuclear cells (PBMCs) from IPF patients and controls were profiled using 10x Chromium 5' single-cell RNA sequencing (scRNA-seq). Flow cytometry was used for validation. Protein concentrations of Regulatory T-cells (Tregs) and Monocytes chemoattractants were measured in plasma and lung homogenates from patients and controls.
    Measurements and main results: Thirty-eight PBMC samples from 25 patients with IPF and 13 matched controls yielded 149,564 cells that segregated into 23 subpopulations, corresponding to all expected peripheral blood cell populations. Classical monocytes were increased in progressive and stable IPF compared to controls (32.1%, 25.2%, 17.9%, respectively, p<0.05). Total lymphocytes were decreased in IPF vs controls, and in progressive vs stable IPF (52.6% vs 62.6%, p=0.035). Tregs were increased in progressive IPF (1.8% vs 1.1%, p=0.007), and were associated with decreased survival (P=0.009 in Kaplan-Meier analysis). Flow cytometry analysis confirmed this finding in an independent cohort of IPF patients. Tregs were also increased in two cohorts of lung scRNA-seq. CCL22 and CCL18, ligands for CCR4 and CCR8 Treg chemotaxis receptors, were increased in IPF.
    Conclusions: The single-cell atlas of the peripheral immune system in IPF, reveals an outcome-predictive increase in classical monocytes and Tregs, as well as evidence for a lung-blood immune recruitment axis involving CCL7 (for classical monocytes) and CCL18/CCL22 (for Tregs).
    Language English
    Publishing date 2023-04-29
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2023.04.29.23289296
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top