[TALK 8] A Detective’s Approach to Experimental Workflows with Flow Cytometry - Pier Andrée Penttilä

Value of the Information & Strength of the Argument

The talk provides valuable, practical insights for researchers using flow cytometry, especially for cell sorting. It covers a wide range of considerations from buffer selection to cell fragility, offering actionable advice. The argumentation is solid, based on the speaker’s extensive experience managing a core facility. She balances the benefits of the technology with honest discussion of its limitations, such as stress-induced changes and endotoxin contamination. The examples of ongoing projects illustrate the application of these principles in real research, strengthening the credibility of the advice.

Scientific Rigor, Source Quality, Title Accuracy

The talk is scientifically rigorous in its practical guidance, though it does not cite specific scientific literature. The speaker references the LMB Flow Cytometry Facility and its resources, which are credible institutional sources. The title accurately reflects the content, which uses a detective metaphor to guide experimental workflow optimization. The description provides links to the facility and the LMB, which are relevant for further information. No comments were provided for analysis.

The title accurately reflects the content, which uses a detective metaphor to guide experimental workflow optimization in flow cytometry.

8/10

The talk is delivered by an expert facility manager, providing practical, experience-based advice. It is not a peer-reviewed study but offers detailed technical insights and references to internal workflows. The information is reliable for practical guidance, though not systematically referenced.

Markers derived by PSI from the transcript: the creator did not define chapters.

• 02:00Introduction: why use flow cytometry, including quantification of mean fluorescence intensity and cell sorting.
• 05:00Discussion of when not to use flow cytometry: high-resolution imaging needs, limited cell numbers, fragile cells.
• 10:00Sample preparation considerations: buffer choice, adherent cell dissociation, and importance of single-cell suspension.
• 15:00Collection tubes and buffers for sorting: pre-coating, polypropylene vs polystyrene, and avoiding cross-contamination.
• 20:00Key questions for cell sorting: purity vs yield, required cell numbers, cell fragility, and activation sensitivity.
• 25:00Considerations for cell size, index sorting, and multi-population sorting with the Bigfoot sorter.
• 30:00Examples of projects combining flow cytometry with other techniques: single-cell RNA-seq, mass spec, and imaging.
• 35:00Future developments: image-enabled cell sorting (ICS) and the Tito sorter for low-pressure sorting.
• 40:00Workflow for combining flow cytometry and single-cell RNA-sequencing, emphasizing pre-optimization.

• LMB Flow Cytometry Facility — Mentioned as the facility managed by the speaker, providing resources and services.
• MRC Laboratory of Molecular Biology — Institutional context for the talk and the facility.
• LMB 2025/26 Solving Problems with Molecular Techniques series — The talk is part of this lecture series.

• LMB Flow Cytometry Facility — Official facility page, consistent with the talk's content.

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