Decoding the contextual duality of CD40 functions

Previously, we established that as a function of its mode of interaction with its ligand or cellular conditions such as membrane lipids, preexisting signaling intermediates activation status, a transmembrane receptor, as represented here with CD40, can induce counteractive cellular responses. Using...

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Bibliographic Details
Published in:Human immunology 2023-11, Vol.84 (11), p.590-599
Main Authors: Bandyopadhyay, Syamdas, Gurjar, Dhiraj, Saha, Bhaskar, Bodhale, Neelam
Format: Article
Language:English
Subjects:
CD40
CD40L
Kinase
Raft
TRAFs
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Summary:Previously, we established that as a function of its mode of interaction with its ligand or cellular conditions such as membrane lipids, preexisting signaling intermediates activation status, a transmembrane receptor, as represented here with CD40, can induce counteractive cellular responses. Using CD40-binding peptides, recombinant mutated CD40-ligands, and an agonistic antibody, we have established the functional duality of CD40. CD40 builds up two constitutionally different signalosomes on lipid raft and non-raft membrane domains initiating two different signaling pathways. Although this initial signaling may be modified by the pre-existing signaling conditions downstream and may be subjected to feed-forward or negative signaling effects, the initial CD40-CD40L interaction plays a crucial role in the functional outcome of CD40. Herein, we have reviewed the influence of interaction between the CD40-CD40L evoking the functional duality of CD40 contingent upon different physiological states of the cells.
ISSN:0198-8859
1879-1166
DOI:10.1016/j.humimm.2023.08.142