EasySep™ Human Bone Marrow CD138 Positive Selection Kit (IVD)
Immunomagnetic positive selection of human CD138+ cells from bone marrow samples for in vitro diagnostic (IVD) applications
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In-lab demonstration
- EasySep™ Buffer (IVD)
Cell separation buffer for in vitro diagnostic (IVD) applications
- "The Big Easy" EasySep™ Magnet
Magnet for column-free immunomagnetic separation
-
Labeling Antibodies
Compatible antibodies for purity assessment of isolated cells
Overview
The National Comprehensive Cancer Network® (NCCN Guidelines Version 2.2020 Multiple Myeloma) recommends using enriched plasma cells from bone marrow aspirations when performing fluorescence in situ hybridization (FISH) analysis for multiple myeloma testing. Enriching bone marrow samples for CD138+ cells has been reported to increase the rate and frequency of chromosomal abnormalities detected by FISH (e.g. Shin SY et al. Int J Hematol, 2012; Shetty S et al. Int J Hematol, 2012), which may help define effective treatment strategies against multiple myeloma.
Designed for use with the “The Big Easy” EasySep™ Magnet and EasySep™ Buffer (IVD) to isolate cells without the use of columns, the EasySep™ Human Bone Marrow CD138 Positive Selection Kit includes the antibodies and magnetic particles required to label CD138+ cells for separation. The easy-to-follow protocol results in labeled CD138+ cells that remain in the tube after unlabeled cells are poured off. This kit is indicated for in vitro diagnostic use by laboratory professionals; the end user is responsible for determining whether the product is suitable for their specific application(s).
Learn more about isolating CD138+ plasma cells to enhance FISH sensitivity for multiple myeloma in this on-demand training course.
Note: Ref #100-0748 is the Regulatory Product ID and should not be used for ordering.
Data Figures
Figure 1. EasySep™ Human Bone Marrow CD138 Positive Selection Kit Enriches CD138+ Cells in Bone Marrow Specimens from Multiple Myeloma Patients
A clinical study was conducted using the EasySep™ Human Bone Marrow CD138 Positive Selection Kit on 33 clinical bone marrow specimens from multiple myeloma patients at various stages of the disease. The mean CD138+ cell purity, as measured by flow cytometry by gating on CD38+/CD138+ cells, was 12.9% (range 0.2% - 82.7%) in unenriched specimens and increased to 79.6% (range 18.5% - 98.6%) in the EasySep™-enriched specimens. In the representative patient bone marrow specimen above, the purities of the unenriched and final enriched plasma cell fractions were 6.0% and 82.4%, respectively.
Figure 2. Percentage of Abnormal Nuclei Counted in Plasma Cells Before (Unenriched) and After Enrichment Using the EasySep™ Human Bone Marrow CD138 Positive Selection Kit
The clinical specimens were evaluated using a panel of five common FISH probes detecting six genomic abnormalities: the Vysis IntelliFISH CCND1/IGH XT Probe Kit to detect the t(11;14) translocation, as well as probes to detect chromosome 5 (D5S23) or chromosome 15 polysomy (D15Z4) (single probe kit), MYC Breakapart, 13q deletion (D13S319), and TP53 deletion (D17Z1). Shown is the percentage of abnormal nuclei detected for each probe, which was higher following CD138+ cell enrichment with the EasySep™ Human Bone Marrow CD138 Positive Selection Kit. Note: Only specimens with an abnormal FISH signal pattern for each probe were included in the analysis.
Table 1. EasySep™ CD138 Reproducibility Study: Variability and Fold Enrichment Summary
A reproducibility study was performed to assess the variability of CD138+ cell enrichment achieved with the EasySep™ Human Bone Marrow CD138 Positive Selection Kit. The study was conducted with specimens of a given volume and initial CD138+ cell frequency across three independent laboratories and three unique kit lots. Contrived specimens were generated by spiking cells from the SK-MM-2 multiple myeloma cell line into whole blood samples from healthy donors at low (< 3%), medium (3 - 15%), and high (> 15%) CD138+ frequencies. CD138+ cells from 16 specimens were enriched using three unique lots of the EasySep™ Human Bone Marrow CD138 Positive Selection Kit over eight non-consecutive study days. Table 1 shows a statistical summary of the run-to-run or random error (Repeatability) variability, site-to-site (Between Site), lot-to-lot (Between Lot), overall (Reproducibility), and fold enrichment from the high, medium, and low CD138+ panel members. The low variabilities demonstrated that the performance of the EasySep™ Human Bone Marrow CD138 Positive Selection Kit is well controlled within lot (across site) and within site (across kit lot). CV = coefficient of variation.
Table 2. EasySep™ CD138 Precision Study: Statistical Summary of Repeatability and Within-Laboratory Precision Estimates
A precision study was performed to assess the repeatability and within-laboratory precision estimates in CD138+ cell enrichment; the study used one kit lot of the EasySep™ Human Bone Marrow CD138 Positive Selection Kit and specimens with a given volume and initial CD138+ cell frequency. The study was conducted using contrived specimens generated by spiking cells from the SK-MM-2 multiple myeloma cell line into bone marrow specimens collected from healthy donors at low (< 3%) and medium (3 - 15%) CD138+ frequencies. A total of six contrived specimens (three medium and three low) were tested on three non-consecutive study days. CD138+ cells from each specimen were enriched using a single kit lot of the EasySep™ Human Bone Marrow CD138 Positive Selection Kit across 12 replicates (four replicates per run, three runs in total). Table 2 shows a statistical summary of the repeatability (within-run) and within-laboratory (across-runs) precision estimates for purity, measured by flow cytometry. The low CV values demonstrate that the variability in the enriched CD138+ cell purity is well controlled within and across runs.
Protocols and Documentation
Find supporting information and directions for use in the Product Information Sheet or explore additional protocols below.
Applications
This product is designed for use in the following research area(s) as part of the highlighted workflow stage(s). Explore these workflows to learn more about the other products we offer to support each research area.
Resources and Publications
Educational Materials (4)
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EasySep™ Human Bone Marrow CD138 Positive Selection Kit (IVD)