Results 51 to 60 of about 14,832,680 (288)

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

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

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

The ubiquitin system in normal and infected germinal center B cells

FEBS Letters, EarlyView.
The ubiquitin system plays a central role in germinal center (GC) B cells, influencing differentiation to long‐lived memory B cells. Oncogenic gammaherpesviruses gain access to memory B cells by establishing latency in GC B cells. Mapping ubiquitin mechanisms in normal and infected GC B cells will define specific molecular circuits in B cells germane ...
Destiny Davis, Lesly Mejia, Emily K Moser   +2 more
wiley   +1 more source

Life of T Follicular Helper Cells

Molecules and Cells, 2015
Antibodies are powerful defense tools against pathogens but may cause autoimmune diseases when erroneously directed toward self-antigens. Thus, antibody producing cells are carefully selected, refined, and expanded in a highly regulated microenvironment (germinal center) in the peripheral lymphoid organs.
openaire   +3 more sources

Follicular helper T-cell–related lymphomas [PDF]

Blood, 2015
In this issue of Blood, Wang et al describe the occurrence and pathogenetic relevance of IDH2R172 mutations in angioimmunoblastic T-cell lymphoma (AITL).
openaire   +2 more sources

Spatial and single‐nuclei transcriptomics reveals idiosyncratic and generic patterns in papillary and anaplastic thyroid cancers

Molecular Oncology, EarlyView.
Matched spatial transcriptomics and single‐nuclei RNA‐seq were generated for anaplastic and BRAFV600E papillary thyroid cancers revealing generic and tumor‐specific states occurring in cancer cells and in the tumor microenvironment. In this context, cancer dedifferentiation mirrored organoid maturation through ordered thyroid marker gain/loss ...
Adrien Tourneur, Joel Rodrigues Vitória, Manuel Saiselet, Ligia Craciun, Denis Larsimont, Anne Lefort, Frédérick Libert, Carine Maenhaut, Sabine Costagliola, Maxime Tarabichi, Mirian Romitti, Vincent Detours   +11 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

T Follicular Helper Cell Heterogeneity

Annual Review of Immunology
T follicular helper (Tfh) cells specialize in helping B cells and are therefore critical contributors to the generation of humoral immunity. Tfh cells aid immunoglobulin class-switch recombination and support the germinal center response, thereby promoting immunoglobulin affinity maturation and the generation of humoral immune memory.
Wenzhi, Song, Joe, Craft
openaire   +2 more sources

CD4 T follicular helper cells in HIV    

, 2022
HIV infects millions of individuals worldwide, and new things still emerge. Once infected, the virus cannot be cleared by the system and causes non-heritable immunological disorder syndrome. Combination antiretroviral therapeutic program effectively suppresses microorganism replication and halts malady progression.
Cebo,Daniel, Weiss,Jochen, Dimity,Carolina   +2 more
openaire   +1 more source