Chronic Inflammation Caused by Lymphotoxin is Lymphoid Neogenesis
Overview
General Medicine
Authors
Affiliations
In presenting a unifying concept for chronic inflammation and lymphoid organogenesis, we suggest that lymphotoxin's (LT, LT-alpha, TNF-beta) crucial role in these processes is pivotal and similar. Chronic inflammatory lesions that developed in the kidney and pancreas at the sites of transgene expression in rat insulin promoter-LT (RIP-LT) mice resembled lymph nodes with regard to cellular composition (T cells, B cells, plasma cells, and antigen-presenting cells), delineated T and B cell areas, primary and secondary follicles, characteristic morphologic and antigenic (ICAM-1, VCAM-1, MAdCAM-1, and PNAd) features of high endothelial venules, and ability to respond to antigen and undergo Ig class switching when obtained from mice immunized with SRBC. The vascular changes, with the exception of PNAd, appear to be the direct consequence of transgene derived LT expression, as they were also observed in RIP-LT mice lacking mature T and B cells. These data show that LT-induced chronic inflammation has the characteristics of organized lymphoid tissue.
Ribeiro V, Teillaud J, Dieu-Nosjean M, Lescaille G, Rochefort J Front Oral Health. 2025; 5:1524313.
PMID: 39911478 PMC: 11794802. DOI: 10.3389/froh.2024.1524313.
Kang S, Brulois K, Choi Y, Zhang S, Jung J J Med Virol. 2025; 97(1):e70179.
PMID: 39831393 PMC: 11744495. DOI: 10.1002/jmv.70179.
IL-33-activated ILC2s induce tertiary lymphoid structures in pancreatic cancer.
Amisaki M, Zebboudj A, Yano H, Zhang S, Payne G, Chandra A Nature. 2025; 638(8052):1076-1084.
PMID: 39814891 PMC: 11864983. DOI: 10.1038/s41586-024-08426-5.
Tertiary Lymphoid Structures and Immunotherapy: Challenges and Opportunities.
Ruddle N Methods Mol Biol. 2024; 2864:299-312.
PMID: 39527229 DOI: 10.1007/978-1-0716-4184-2_16.
Mouse Models Enable the Functional Investigation of Tertiary Lymphoid Structures in Cancer.
Jeevanandam A, Yin Z, Connolly K, Joshi N Methods Mol Biol. 2024; 2864:57-76.
PMID: 39527217 DOI: 10.1007/978-1-0716-4184-2_4.