AI Article Synopsis
- Current understanding of lymphocyte migration suggests that naïve lymphocytes move between blood and lymph nodes but don't reach non-lymphoid tissues.
- Research showed many B lymphocytes in peripheral areas resemble naïve B cells and are found within tissues rather than near blood vessels.
- Findings indicate that naïve B cells not only exist but may also migrate in non-lymphoid organs, challenging existing views on their role in immune response and tolerance.
Article Abstract
The current view of lymphocyte migration states that naïve lymphocytes re-circulate between the blood and the lymph via the lymph nodes, but are not able to access non-lymphoid tissues. We examined B lymphocytes in peripheral tissues and found that the majority were phenotypically similar to naïve B cells in lymphoid tissues and were located within the parenchyma, not associated with blood vessels. The mutation rate within the Vh region of these cells was substantially less than the rate attributed to somatic hypermutation and was identical to that observed in naïve B cells isolated from the lymph nodes, showing the presence of naïve B cells in the non-lymphoid organs. Further, using FTY720-treated mice, we showed that naïve B cells migrate through the peripheral tissues and, using pertussis toxin, that the entry of B cells was not controlled by chemokine-mediated signalling events. Overall, these results show that naïve B lymphocytes constitute the majority of the total B-cell population in non-lymphoid tissues and suggest that these cells may re-circulate through the periphery as part of their normal migration pathway. This has implications for the current view of the role of naïve B cells in priming and tolerance.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1038/icb.2011.35 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Predicting apheresis yield and factors affecting peripheral blood stem cell harvesting using a machine learning model.
J Int Med Res
December 2024
Department of Hematology, The First Affiliated Hospital of Wannan Medical College, Wuhu, Anhui, China.
Objective: Mobilization and collection of peripheral blood stem cells (PBSCs) are time-intensive and costly. Excessive apheresis sessions can cause physical discomfort for donors and increase the costs associated with collection. Therefore, it is essential to identify key predictive factors for successful harvests to minimize the need for multiple apheresis procedures.
View Article and Find Full Text PDFMenin inhibitors in the treatment of acute myeloid leukemia.
Blood
December 2024
University Medical Center Groningen, Groningen, Netherlands.
Acute myeloid leukemia (AML) is a heterogeneous hematologic malignancy characterized by the (oligo)clonal expansion of myeloid progenitor cells. Despite advances in treatment, AML remains challenging to cure, particularly in patients with specific genetic abnormalities. Menin inhibitors have emerged as a promising therapeutic approach, targeting key genetic drivers of AML such as KMT2A rearrangements and NPM1 mutations.
View Article and Find Full Text PDFIn Vitro and In-Silico Assessment of Gaussian Curvature-driven Internalization Kinetics of Nanoparticles.
ACS Appl Mater Interfaces
December 2024
Materials Engineering, Indian Institute of Technology Gandhinagar, Gandhinagar 382055, India.
Nanoparticles have been of significant interest in various biomedical domains such as drug delivery, gene delivery, cytotoxicity analysis, and imaging. Despite the synthesis of a variety of nanoparticles, their cellular uptake efficiency remains a substantial obstacle, with only a small fraction of delivered nanoparticles (NPs) have been reported to traverse the cell membrane within 24 h. Consequently, higher doses are often necessitated, leading to increased toxicity concerns.
View Article and Find Full Text PDFTrade-off movement between hydraulic resistance escape and shear stress escape by cancer cells.
Biophys J
December 2024
The State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China; Center for Quantitative Biology, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China;; Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325001, China. Electronic address:
In the circulatory system, the microenvironment surrounding cancer cells is complex and involves multiple coupled factors. We selected two core physical factors, shear stress and hydraulic resistance, and constructed a microfluidic device with dual negative inputs to study the trade-off movement behavior of cancer cells when facing coupled factors. We detected significant shear stress escape phenomena in the MDA-MB-231 cell line and qualitatively explained this behavior using a cellular force model.
View Article and Find Full Text PDFNeuro-immunobiology and treatment assessment in a mouse model of anti-NMDAR encephalitis.
Brain
December 2024
Neuroimmunology Program, Fundació Clínic per la Recerca Biomèdica - Institut d'Investigacions Biomèdiques August Pi i Sunyer (FCRB-IDIBAPS), Barcelona 08036, Spain.
Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is a disorder mediated by autoantibodies against the GluN1 subunit of NMDAR. It occurs with severe neuropsychiatric symptoms that often improve with immunotherapy. Clinical studies and animal models based on patients' antibody transfer or NMDAR immunization suggest that the autoantibodies play a major pathogenic role.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!