2023
DOI: 10.1038/s41590-023-01557-3
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Induction of bronchus-associated lymphoid tissue is an early life adaptation for promoting human B cell immunity

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Cited by 22 publications
(14 citation statements)
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“…To confirm that the changes in lung-resident B cell responses seen in the cKO mice were due to immune reactions occurring in the lungs, we performed immunofluorescence analysis of B cells in the lung tissue, isolated from mice at day 16 post infection ( Figure 4A ). The generation of inducible bronchus-associated lymphoid tissues (iBALT) in the lungs after influenza infection, has been previously described and these structures are known to be associated with GC cells 27,28 . Therefore, we hypothesized that the increased B cell responses in the cKO mice could be associated with iBALT structures in the lungs and we investigated whether the cKO mice have, either an increased number or better defined iBALT associated GC structures in the lungs, compared to the lungs from control mice.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…To confirm that the changes in lung-resident B cell responses seen in the cKO mice were due to immune reactions occurring in the lungs, we performed immunofluorescence analysis of B cells in the lung tissue, isolated from mice at day 16 post infection ( Figure 4A ). The generation of inducible bronchus-associated lymphoid tissues (iBALT) in the lungs after influenza infection, has been previously described and these structures are known to be associated with GC cells 27,28 . Therefore, we hypothesized that the increased B cell responses in the cKO mice could be associated with iBALT structures in the lungs and we investigated whether the cKO mice have, either an increased number or better defined iBALT associated GC structures in the lungs, compared to the lungs from control mice.…”
Section: Resultsmentioning
confidence: 99%
“…Previous studies have shown that upon influenza infection, structures with similar compartmentalization and cellular composition to secondary lymphoid organs, termed iBALT, are ectopically generated in the lungs of mice and support GC B cell proliferation 28,35 . Although the presence of iBALT in healthy adult humans has been controversial and may be associated with increased pathogenesis in respiratory tract diseases 36 , a recent study has shown that these iBALT associated GC structures are present in lungs from children and are involved in respiratory virus immune response 27 . Thus, multiple studies suggest that antigen-derived iBALT development support B cell proliferation and maturation in the context of respiratory pathogens 37,38 .…”
Section: Discussionmentioning
confidence: 99%
“…Prior work using scRNA-seq data and the CellTypist common reference dataset discovered previously underappreciated organ-specific features and aggregates of T cells and B cells 75 . Recent publications in the field of mucosal immunology illustrate the segregation of immune cells within aggregates in human lung tissue and their role in abnormal regulation of vascular function 76,77,78,79 . Molecular and cellular changes, including fibrotic and immune-cell rich regions were recently imaged in the lungs of children with bronchopulmonary dysplasia (BPD), a chronic lung disease following premature birth 80 .…”
Section: Perivascular Immune Cells In Lungmentioning
confidence: 99%
“…Tph cells appear to be generated even in healthy young individuals. Bronchus-associated lymphoid tissue (BALT) exists around the lung airway of infants and young child under 3 years old, but its number decreases after that ( 65 ). PD-1 hi CXCR5 − CD4 + cells exist here and are considered to be involved in B cell help in the lung to establish infant-acquired immunity ( 65 ).…”
Section: Diversity Of Tph Cellsmentioning
confidence: 99%
“…Bronchus-associated lymphoid tissue (BALT) exists around the lung airway of infants and young child under 3 years old, but its number decreases after that ( 65 ). PD-1 hi CXCR5 − CD4 + cells exist here and are considered to be involved in B cell help in the lung to establish infant-acquired immunity ( 65 ). These findings suggest CD4 + T cells with a Tph feature develop even under physiological conditions.…”
Section: Diversity Of Tph Cellsmentioning
confidence: 99%