In Vitro Evaluation of Toxicant Influences on the Immune System

Area of Science:

• Immunology
• Toxicology
• Cell Biology

Background:

• Human peripheral blood mononuclear cells (PBMCs) are crucial for assessing immune system health.
• PBMC culture techniques, established in the 1960s-70s, have been refined with advancements in flow cytometry.
• Clinical applications of PBMC analysis provide insights into pathogen defense capabilities.

Purpose of the Study:

• To present flow cytometry-based protocols for PBMC culture.
• To determine the impact of environmental toxicants on immune system function.
• To evaluate toxicant effects on immune responses to vaccine antigens in vitro.

Main Methods:

• Flow cytometry-based techniques for PBMC culture.
• Measurement of cell proliferation and viability.
• Identification of affected naïve and memory cell subsets.
• Blood cell counting.

Main Results:

• Established protocols for in vitro assessment of immune system health.
• Demonstrated methods to evaluate toxicant or drug effects on immune cells.
• Provided a protocol to test environmental toxicants' modification of vaccine immune responses.

Conclusions:

• Flow cytometry-based PBMC culture offers a sensitive in vitro method to assess immune health.
• These protocols facilitate the study of environmental toxicant impacts on cellular immunity.
• The methods can inform on toxicant-induced alterations in vaccine response.