Gamma interferon production by different populations of human splenic lymphocytes.
Weck. P K PK; May. L L; Weck. C J CJ
Key Findings
- SEA stimulates IFN‑gamma production in human splenic lymphocytes
- Maximum IFN‑gamma occurs when T‑cells are co‑cultured with macrophages for three days
- Thymosin‑alpha‑1 at 10 µg/ml further enhances IFN‑gamma output
Practical Outcomes
- The study suggests thymosin‑alpha‑1 can amplify immune activation in vitro, hinting it might boost IFN‑gamma‑mediated defenses. However, because the data come from cell cultures, there’s no direct dosing guideline for humans, and real‑world protocols would need clinical testing before use.
Summary
In a lab study, a bacterial toxin (SEA) made human spleen immune cells produce a key immune signal called IFN‑gamma, especially when T‑cells were mixed with macrophages for three days. Adding the peptide thymosin‑alpha‑1 at 10 µg/ml boosted this signal even more. The work was done in test‑tube cultures, not in people.
Abstract
The treatment of cultures of human splenic lymphocytes with Staphylococcal enterotoxin A (SEA) resulted in the production of human gamma interferon (HuIFN-gamma). Separation of lymphocyte populations to give preparations enriched in T or B lymphocytes after removal of macrophages demonstrated that maximum IFN titers were detected when T lymphocytes were incubated with macrophages for a period of three days. The levels of IFN-gamma varied from donor to donor but the kinetics of induction were quite similar in all cases. Concentrations of 0.5-1.0 microgram/ml SEA gave optimal induction of IFN and the addition of thymosin alpha-1 at 10 micrograms/ml to the culture medium enhanced IFN-gamma production.
Study Information
pubmed
1983
10.1089/jir.1983.3.121