Combinatorial antibody titrations for high-parameter flow cytometry.

Area of Science:

• Immunology
• Biotechnology
• Cell Biology

Background:

• Flow cytometry relies on titrating fluorochrome-labeled antibodies to optimize marker detection.
• Current best practices require individual antibody titration for each new lot, which is time-consuming.
• High-parameter flow cytometry panels (30+ colors) exacerbate the titration burden.

Purpose of the Study:

• To evaluate the efficacy of titrating antibodies in groups for high-parameter flow cytometry.
• To demonstrate time and cost savings without compromising data quality.

Main Methods:

• Antibodies were titrated individually and in groups using relevant cell populations.
• Data quality was assessed by evaluating the separation between positive and negative cell populations and background noise.

Main Results:

• Grouping antibodies for titration yielded comparable results to individual titrations.
• Significant time and cost reductions were achieved through grouped titrations.
• No compromise in data quality was observed when using the grouped titration approach.

Conclusions:

• Antibody titration in groups is a viable and efficient strategy for high-parameter flow cytometry.
• This streamlined approach enhances experimental setup efficiency and resource management.
• Researchers can save considerable time and cost by adopting grouped antibody titrations.