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Distinct roles for lymphotoxin-alpha and tumor necrosis factor in organogenesis and spatial organization of lymphoid tissue
journal contribution
posted on 2023-05-17, 07:43 authored by Heinrich KornerHeinrich Korner, Cook, M, Riminton, DS, Lemckert, FA, Hoek, RM, Ledermann, B, Kontgen, F, Fazekas de St Groth, B, Sedgwick, JDSpecialized roles for the pro-inflammatory cytokines tumor necrosis factor (TNF) and lymphotoxin (LT) were characterized in TNF/LTα(-/-) and TNF(-/-) mice established by direct gene targeting of C57BL/6 ES cells. The requirement for LT early in lymphoid tissue organogenesis is shown to be distinct from the more subtle and varied role of TNF in promoting correct microarchitectural organization of leukocytes in LN and spleen. Development of normal Peyer's patch (PP) structure, in contrast, is substantially dependent on TNF. Only mice lacking LT exhibit retarded B cell maturation in vivo and serum immunoglobulin deficiencies. A temporal hierarchy in lymphoid tissue development can now be defined, with LT being an essential participant in general lymphoid tissue organogenesis, developmentally preceeding TNF that has a more varied and subtle role in promotion of correct spatial organization of leukocytes in LN and spleen. PP development in TNF(-/-) mice is unusual, indicating that TNF is a more critical participant for this structure than it is for other lymphoid tissues.
History
Publication title
European Journal of ImmunologyVolume
27Issue
10Pagination
2600-2609ISSN
0014-2980Department/School
Menzies Institute for Medical ResearchPublisher
Wiley-V C H Verlag GmbhPlace of publication
Po Box 10 11 61, Weinheim, Germany, D-69451Repository Status
- Restricted