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Flow & Mass Cytometry Core at the Stem Cell Research Center

Core Leadership and Personnel

The Flow Cytometry Core is led by Vanessa Scarfone, MSc, who has managed the facility since its inception in 2010 and brings nearly 20 years of experience in flow cytometry and cell sorting. Vanessa has extensive expertise in CyTOF experimental design, instrumentation operations, and high-dimensional data analysis, and has trained hundreds of researchers in advanced flow and mass cytometry techniques.

Faculty Advisor Dr. Matt Inlay brings over 25 years of experience using flow cytometry to study hematopoietic stem cells, embryonic development, and immune system interactions. His research employs transplantation and lineage tracing approaches, and he has served as the Core's faculty advisor for more than a decade.

Pauline Nguyen, Flow Cytometry Core Technician, has over 5 years of experience in flow cytometry and cell sorting. She supports daily operations, training, and technical assistance, ensuring optimal use of the facility's technologies and smooth coordination of experiments.

Venessa-Scarfone
Vanessa Scarfone, MSc
Director
vanessa.s@uci.edu
Venessa-Scarfone
Matt Inlay, PhD
Faculty Advisor
minlay@uci.edu
Venessa-Scarfone
Pauline Nguyen
Core Technician
nguyenpu@hs.uci.edu

Contacts

About the Core

The Flow Cytometry Core is a high-impact research resource, providing advanced single-cell and spatial analysis technologies essential for the development and characterization of human stem cell-based in vitro models. Our platforms enable deep phenotyping, rare cell detection, and precise cell isolation, supporting projects across basic, translational, and regenerative medicine research.

Our Core has contributed to over 100 peer-reviewed publications and supported more than $20 million in successful grant applications by providing preliminary data, experimental expertise, and letters of support. We train over 100 students, postdocs, and faculty annually, including the CIRM COMPASS Scholars, providing hands-on experience in the latest flow and mass cytometry technologies. In addition, we host regular seminars and technology workshops to ensure our research community remains at the forefront of methodological advances.

Our CyTOF mass cytometry system enables measurement of more than 50 parameters per cell, revealing detailed phenotypic and functional profiles of complex cell populations. BD flow cytometers and sorters facilitate population purification, single-cell cloning, and rigorous quality control to ensure reproducibility. The Hyperion Imaging Mass Cytometry platform adds spatial context, enabling the simultaneous detection of 40+ markers in tissue sections and organoids while preserving architecture and eliminating autofluorescence.

By integrating advanced instrumentation with expert guidance and a proven record of research success, the Flow Cytometry Core empowers investigators to produce high-quality, reproducible data that advances our understanding of human biology, disease mechanisms, and potential therapeutic targets.

Technologies

Mass Cytometry Systems

Standard BioTools Helios (CyTOF® System)
High-performance mass cytometer detecting >50 cellular parameters using heavy metal–labeled antibodies and time-of-flight mass spectrometry. Ideal for deep phenotyping, differentiation tracking, and rare subset identification.
Location: Gross Hall, Room 1401

Hyperion Imaging Mass Cytometry
Spatial analysis platform detecting 40+ markers in tissue sections without spectral overlap, enabling high-resolution mapping of organoid architecture and cell-cell interactions.
Location: Gross Hall, Room 1401

Flow Cytometry & Cell Sorting

BD Aria II Cell Sorter
Four-laser (405/488/561/640 nm), 13-color sorter with 96-well plate cloning and temperature control for sterile sorting.
Location: Gross Hall, Room 1302
BD Fortessa Flow Cytometer
Five-laser (355/405/488/561/640 nm), 18-color analyzer with High Throughput Sampler for rapid, plate-based screening.
Location: Gross Hall, Bay 1200
BD Fusion Cell Sorter
Advanced five-laser, 18-color sorter in BSL-2 biosafety cabinet with temperature-controlled sterile sorting for viable cell recovery.
Location: Gross Hall, Room 1313

Specialized Services

SCRC Metal Conjugated Antibody Bank
Collection of pre-conjugated, metal-labeled antibodies for mass cytometry with custom conjugation available.
FlowJo Data Analysis
Expert computational analysis, data visualization, and interpretation of complex cytometry datasets.

Workshops, Tech Talks, and Seminars

CIRM Short Course: Imaging Mass Cytometry

This course will cover the fundamentals of imaging mass cytometry, including its comparison with fluorescence-based spatial imaging, data dimensionality, experimental design, panel building, and sample preparation techniques like tissue processing and fixation. Participants will also learn about metal antibody conjugation protocols, titration, optimization, and data analysis using neural networks, segmentation, and dimensionality reduction. Students will work on antibody conjugation, sample preparation, and running samples.

6 Days | 3 Virtual | 3 In-Person & Hands On
September 15th-19th IMC Course. It will be Monday through Friday, 10 am-5 pm
UCI Stem Cell Research Center, Gross Hall
CIRM Short Course: Mass Cytometry

This course focuses on foundational concepts, with lectures covering technical aspects of mass cytometry, its comparison to fluorescence-based cytometry, experimental design, data dimensionality, and panel building. Participants will learn about sample preparation techniques for surface and intracellular targets, as well as metal antibody conjugation protocols, titration, validation, and optimization. Students will engage in practical experience, followed by basic data analysis using tools like Cell Profiler, HistoCat, and advanced free software packages.

6 Days - 3 Virtual | 14 Hours In-Person | 24 Hours Hands-On
UCI Stem Cell Research Center, Gross Hall