Results 51 to 60 of about 67,969 (299)

Proportions of circulating follicular helper T cells are reduced and correlate with memory B cells in HIV-infected children.

PLoS ONE, 2017
IntroductionHIV causes defects in memory B cells in children, but the mechanisms of those defects have not been fully elucidated. One possible mechanism is the lack of T-cell help to B cells during immune reactions. However, few studies have assessed the
Daniel M Muema, Gladys N Macharia, Babatunde A Olusola, Amin S Hassan, Greg W Fegan, James A Berkley, Britta C Urban, Eunice W Nduati   +7 more
doaj   +1 more source

Lymph Node Stromal Cells Generate Antigen-Specific Regulatory T Cells and Control Autoreactive T and B Cell Responses

Cell Reports, 2020
Summary: Within lymph nodes (LNs), T follicular helper (TFH) cells help B cells to produce antibodies, which can either be protective or autoreactive. Here, we demonstrate that murine LN stromal cells (LNSCs) suppress the formation of autoreactive TFH ...
Reza Nadafi, Catarina Gago de Graça, Eelco D. Keuning, Jasper J. Koning, Sander de Kivit, Tanja Konijn, Sandrine Henri, Jannie Borst, Rogier M. Reijmers, Lisa G.M. van Baarsen, Reina E. Mebius   +10 more
doaj   +1 more source

T Follicular Helper Cells and B Cell Dysfunction in Aging and HIV-1 Infection

Frontiers in Immunology, 2017
T follicular helper (Tfh) cells are a subset of CD4 T cells that provide critical signals to antigen-primed B cells in germinal centers to undergo proliferation, isotype switching, and somatic hypermutation to generate long-lived plasma cells and memory ...
Suresh Pallikkuth, Lesley de Armas, Stefano Rinaldi, Savita Pahwa   +3 more
doaj   +1 more source

The PI3Kδ inhibitor roginolisib (IOA‐244) preserves T‐cell function and activity

Molecular Oncology, EarlyView.
Identification of novel PI3K inhibitors with limited immune‐related adverse effects is highly sought after. We found that roginolisib and idelalisib inhibit chronic lymphocytic leukemia (CLL) cells and Treg suppressive functions to similar extents, but roginolisib affects cytotoxic T‐cell function and promotion of pro‐inflammatory T helper subsets to a
Elise Solli, Alessio Bevilacqua, Mathias Wenes, Denis Migliorini, Lars van der Veen, Sigrid S Skånland, Giusy Di Conza, Kjetil Taskén   +7 more
wiley   +1 more source

Mapping the Lineage Relationship between CXCR5+ and CXCR5− CD4+ T Cells in HIV-Infected Human Lymph Nodes

Cell Reports, 2019
Summary: CXCR5 is a key marker of follicular helper T (TFH) cells. Using primary lymph nodes (LNs) from HIV-infected patients, we identified a population of CXCR5− CD4+ T cells with TFH-cell-like features.
Daniel Del Alcazar, Yifeng Wang, Chenfeng He, Ben S. Wendel, Perla M. Del Río-Estrada, Jerome Lin, Yuria Ablanedo-Terrazas, Michael J. Malone, Stefany M. Hernandez, Ian Frank, Ali Naji, Gustavo Reyes-Terán, Ning Jiang, Laura F. Su   +13 more
doaj   +1 more source

Ddb1 Is Essential for the Expansion of CD4+ Helper T Cells by Regulating Cell Cycle Progression and Cell Death

Frontiers in Immunology, 2021
Follicular helper T (TFH) cells are specialized CD4+ helper T cells that provide help to B cells in humoral immunity. However, the molecular mechanism underlying generation of TFH cells is incompletely understood.
Lingtao Yang, Wei Chen, Li Li, Yueyue Xiao, Shilin Fan, Quan Zhang, Tian Xia, Mengjie Li, Yazhen Hong, Tongjin Zhao, Qiyuan Li, Wen-Hsien Liu, Nengming Xiao   +12 more
doaj   +1 more source

Microbiota and chronic inflammatory arthritis. an interwoven link [PDF]

, 2016
Background: Only recently, the scientific community gained insights on the importance of the intestinal resident flora for the host's health and disease.
D'Amelio, Raffaele, Laganà, Bruno, Manuela Rosado, M, Picchianti Diamanti, Andrea   +3 more
core   +2 more sources

Combined 5‐aminolevulinic acid and ferric ammonium citrate treatment promotes hair follicle growth by activating dermal papilla cells

FEBS Open Bio, EarlyView.
5‐Aminolevulinic acid combined with ferric ammonium citrate (5‐ALA/FAC) stimulates dermal papilla cell activity and promotes hair follicle growth. The treatment enhances ERK and AKT signaling, increases hair‐inductive gene expression, and restores dermal papilla function suppressed by dihydrotestosterone and oxidative stress, resulting in enhanced hair
Han‐Wook Ryu, Eok‐Soo Oh, Sewoon Kim
wiley   +1 more source

CD4+ T Follicular Helper Cells in Human Tonsils and Blood Are Clonally Convergent but Divergent from Non-Tfh CD4+ Cells

Cell Reports, 2020
Summary: T follicular helper (Tfh) cells are fundamental for B cell selection and antibody maturation in germinal centers. Circulating Tfh (cTfh) cells constitute a minor proportion of the CD4+ T cells in peripheral blood, but their clonotypic ...
Elena Brenna, Alexey N. Davydov, Kristin Ladell, James E. McLaren, Paolo Bonaiuti, Maria Metsger, James D. Ramsden, Sarah C. Gilbert, Teresa Lambe, David A. Price, Suzanne L. Campion, Dmitriy M. Chudakov, Persephone Borrow, Andrew J. McMichael   +13 more
doaj   +1 more source

TCF1 and LEF1 Control Treg Competitive Survival and Tfr Development to Prevent Autoimmune Diseases. [PDF]

, 2019
CD4+ Foxp3+ T regulatory (Treg) cells are key players in preventing lethal autoimmunity. Tregs undertake differentiation processes and acquire diverse functional properties.
Cho, Sunglim, Dong, Yi, Feng, Gen-Sheng, Fu, Wenxian, Jepsen, Kristen, Liang, Yan, Lu, Li-Fan, Wan, Shuo, Wang, Ke, Xu, Wanqing, Xue, Hai-Hui, Yang, Bi-Huei, Yuan, Xiaomei   +12 more
core   +1 more source