Zinc Ionophore Pyrithione Mimics CD28 Costimulatory Signal in CD3 Activated T Cells.
Int J Mol Sci
; 25(8)2024 Apr 12.
Article
in En
| MEDLINE
| ID: mdl-38673887
ABSTRACT
Zinc is an essential trace element that plays a crucial role in T cell immunity. During T cell activation, zinc is not only structurally important, but zinc signals can also act as a second messenger. This research investigates zinc signals in T cell activation and their function in T helper cell 1 differentiation. For this purpose, peripheral blood mononuclear cells were activated via the T cell receptor-CD3 complex, and via CD28 as a costimulatory signal. Fast and long-term changes in intracellular zinc and calcium were monitored by flow cytometry. Further, interferon (IFN)-γ was analyzed to investigate the differentiation into T helper 1 cells. We show that fast zinc fluxes are induced via CD3. Also, the intracellular zinc concentration dramatically increases 72 h after anti-CD3 and anti-CD28 stimulation, which goes along with the high release of IFN-γ. Interestingly, we found that zinc signals can function as a costimulatory signal for T helper cell 1 differentiation when T cells are activated only via CD3. These results demonstrate the importance of zinc signaling alongside calcium signaling in T cell differentiation.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pyridines
/
Thiones
/
Zinc
/
Lymphocyte Activation
/
Cell Differentiation
/
Interferon-gamma
/
CD28 Antigens
Limits:
Humans
Language:
En
Journal:
Int J Mol Sci
Year:
2024
Document type:
Article
Affiliation country:
Alemania