T-cell Enrichment using MagCloudz...
Transcript of T-cell Enrichment using MagCloudz...
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T-cell Enrichment using MagCloudz platform
• Peripheral blood mononuclear cells (PBMC) were isolated from whole blood
• T-cell populations were enriched using bio-tinyated anti-CD3
• Data sets include Human Peripheral Blood and Umbilical Cord Blood
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MagCloudzStreptavidin
Target Cells
Confidential Information
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T-Cell Enrichment from PBMC Fractions
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APPLICATION NOTE
100 Cummings Center, Suite 438N | Beverly, MA 01915 [email protected] | www.quadtechnologies.com
NOVEL BEAD-RELEASE TECHNOLOGY FOR MAGNETIC ENRICHMENT AND PURIFICATION
OF CD3+ T-CELLS FROM PERIPHERAL BLOOD
The isolation of T-cells or other immune-derived cells is an emerging interest for the development of immunotherapies and
translational clinical research where isolated cells must be magnetic label-free for the intended downstream application.
Quad Technologies’ MagCloudz™ Streptavidin with QuickGel™ technology is a unique platform, which enables the
isolation of label-free target cell populations in a biologically-friendly manner while preserving cell viability and native
morphology. Here, we present representative data highlighting the enrichment, purity and viability of T-cell populations
isolated from peripheral blood using our MagCloudz™ Streptavidin cell separation kit with biotinylated-anti-CD3 antibody
(clone UCHT1, eBioscience). Detailed protocols are available at www.quadtechnologies.com.
Figure 1: Representative flow cytometry dot plots for T-Cell enrichment and purification from peripheral blood.
Cell populations were stained with PerCP-conjugated anti-CD3, PE-conjugated anti-CD45, annexin-V-FITC (apoptosis
marker) and propidium iodide (viability marker) following the MagCloudz Streptavidin cell separation protocol. A) The
forward and side-scatter profile of the initial PBMC population; B) 56% CD3+/CD45+ T-Cells (target cell population) were
present in the initial sample; C) 92% T-Cell uptake as indicated by the low percentage of T-Cells remaining in the un-bound
cell fraction following MagCloudz Streptavidin binding; D) forward and side-scatter profile of the recovered CD3+ T-Cell
population; E) High purity T-Cells were recovered from the MagCloudz Streptavidin, enriched from 56% in the initial
population to 98% in the final isolated/released population and F) high viability (99%) of the recovered T-Cells, indicated
by the absence of annexin-V and propidium iodide staining in the bottom left quadrant of the plot. A total of 80% of the
target T-Cell population was recovered as magnetic label-free T-Cells from the MagCloudz Streptavidin in this assay.
80% recovered T-cells
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• Human umbilical cord blood (HUCB) was enriched for T-Cell populations:
T-Cell Enrichment from HUCB Fractions
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Confidential Information
CD
3
CD45
An
nV
7AADCD45
CD3
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Attributes of Quickbeads
BF
FITC IgG-PE
Plug and play (easy to use) chemistry
Bio-friendly release
Mono-dispersed
Very-low settling velocity
100x great magnetic moment than conventional beads
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Recovery Benchmark
Rec
ov
ery
[%
]
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Strategic demonstrates protein purification: Quad’s MagCloudz yield much cleaner results
Positive Control
ConventionalApproach
Quad’sMagCloudz
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Cell Sorting Features for CAR-T Immunotherapy
CellViability
≥ 70% ✔ ✔ X
Purity ≥ 80% ✔ ✔ ✔
Residual Magnetic Particles
100 magnetic particles ≤ 3,000,000 cells
✔ X ✔
High Throughput
> 5,000,000 cells/s
✔ ✔ X
Sterile Yes ✔ ✔ ✔
Ability to Multi-sort
CD4+CD8+ ✔ X X
DesiredFeatures*
Confidential Information *Carl June et. Al New England Journal of Medicine (2014)
Company M Company L
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What is in the Box?
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Summary
• First viable magnetic separation product with cell release capabilities
• Simple, short workflows with time and cost savings over competitors
• Our MagCloudz system achieves high purity, efficiency & excellent viability of isolated cells
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Confidential Information