Synthetic indole Mannich bases: Their ability to modulate in vitro cellular immunity

• Indole Mannich base derivatives.
• ROS.
• Nitric oxide.
• Cytokine inhibition.

The synthetic indole Mannich bases 1–13 have been investigated for their ability to modulate immune responses measured in vitro. These activities were based on monitoring their affects on T-lymphocyte proliferation, reactive oxygen species (ROS), IL (interleukin)-2, IL-4, and nitric oxide production. Compound 5 was found to be the most potent immunomodulator in this context. Four of the synthesized compounds, 5, 11, 12, and 13, have significant potent inhibitory effects on T-cell proliferation, IL-4, and nitric oxide production. However, none of the thirteen indole compounds exerted any activity against ROS production.

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