Flow Cytometric Measurement of Blood Cells with BCR-ABL1 Fusion Protein in Chronic Myeloid Leukemia
Abstract Chronic myeloid leukemia (CML) is characterized in the majority of cases by a t(9;22)(q34;q11) translocation, also called the Philadelphia chromosome, giving rise to the BCR-ABL1 fusion protein. Current treatment with tyrosine kinase inhibitors is directed against the constitutively active...
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Nature Portfolio
2017
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oai:doaj.org-article:bc40746d211b48e79b0577d852b7ebdb2021-12-02T15:06:04ZFlow Cytometric Measurement of Blood Cells with BCR-ABL1 Fusion Protein in Chronic Myeloid Leukemia10.1038/s41598-017-00755-y2045-2322https://doaj.org/article/bc40746d211b48e79b0577d852b7ebdb2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00755-yhttps://doaj.org/toc/2045-2322Abstract Chronic myeloid leukemia (CML) is characterized in the majority of cases by a t(9;22)(q34;q11) translocation, also called the Philadelphia chromosome, giving rise to the BCR-ABL1 fusion protein. Current treatment with tyrosine kinase inhibitors is directed against the constitutively active ABL1 domain of the fusion protein, and minimal residual disease (MRD) after therapy is monitored by real-time quantitative PCR (RQ-PCR) of the fusion transcript. Here, we describe a novel approach to detect and enumerate cells positive for the BCR-ABL1 fusion protein by combining the in situ proximity ligation assay with flow cytometry as readout (PLA-flow). By targeting of the BCR and ABL1 parts of the fusion protein with one antibody each, and creating strong fluorescent signals through rolling circle amplification, PLA-flow allowed sensitive detection of cells positive for the BCR-ABL1 fusion at frequencies as low as one in 10,000. Importantly, the flow cytometric results correlated strongly to those of RQ-PCR, both in diagnostic testing and for MRD measurements over time. In summary, we believe this flow cytometry-based method can serve as an attractive approach for routine measurement of cells harboring BCR-ABL1 fusions, also allowing simultaneously assessment of other cell surface markers as well as sensitive longitudinal follow-up.Liza LöfLinda ArngårdenUlla Olsson-StrömbergBenjamin SiartMattias JanssonJoakim S. DahlinIngrid ThörnLisa ChristianssonMonica HermanssonAnders LarssonErik AhlstrandGöran WålinderOla SöderbergRichard RosenquistUlf LandegrenMasood Kamali-MoghaddamNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017) |
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Medicine R Science Q Liza Löf Linda Arngården Ulla Olsson-Strömberg Benjamin Siart Mattias Jansson Joakim S. Dahlin Ingrid Thörn Lisa Christiansson Monica Hermansson Anders Larsson Erik Ahlstrand Göran Wålinder Ola Söderberg Richard Rosenquist Ulf Landegren Masood Kamali-Moghaddam Flow Cytometric Measurement of Blood Cells with BCR-ABL1 Fusion Protein in Chronic Myeloid Leukemia |
| description |
Abstract Chronic myeloid leukemia (CML) is characterized in the majority of cases by a t(9;22)(q34;q11) translocation, also called the Philadelphia chromosome, giving rise to the BCR-ABL1 fusion protein. Current treatment with tyrosine kinase inhibitors is directed against the constitutively active ABL1 domain of the fusion protein, and minimal residual disease (MRD) after therapy is monitored by real-time quantitative PCR (RQ-PCR) of the fusion transcript. Here, we describe a novel approach to detect and enumerate cells positive for the BCR-ABL1 fusion protein by combining the in situ proximity ligation assay with flow cytometry as readout (PLA-flow). By targeting of the BCR and ABL1 parts of the fusion protein with one antibody each, and creating strong fluorescent signals through rolling circle amplification, PLA-flow allowed sensitive detection of cells positive for the BCR-ABL1 fusion at frequencies as low as one in 10,000. Importantly, the flow cytometric results correlated strongly to those of RQ-PCR, both in diagnostic testing and for MRD measurements over time. In summary, we believe this flow cytometry-based method can serve as an attractive approach for routine measurement of cells harboring BCR-ABL1 fusions, also allowing simultaneously assessment of other cell surface markers as well as sensitive longitudinal follow-up. |
| format |
article |
| author |
Liza Löf Linda Arngården Ulla Olsson-Strömberg Benjamin Siart Mattias Jansson Joakim S. Dahlin Ingrid Thörn Lisa Christiansson Monica Hermansson Anders Larsson Erik Ahlstrand Göran Wålinder Ola Söderberg Richard Rosenquist Ulf Landegren Masood Kamali-Moghaddam |
| author_facet |
Liza Löf Linda Arngården Ulla Olsson-Strömberg Benjamin Siart Mattias Jansson Joakim S. Dahlin Ingrid Thörn Lisa Christiansson Monica Hermansson Anders Larsson Erik Ahlstrand Göran Wålinder Ola Söderberg Richard Rosenquist Ulf Landegren Masood Kamali-Moghaddam |
| author_sort |
Liza Löf |
| title |
Flow Cytometric Measurement of Blood Cells with BCR-ABL1 Fusion Protein in Chronic Myeloid Leukemia |
| title_short |
Flow Cytometric Measurement of Blood Cells with BCR-ABL1 Fusion Protein in Chronic Myeloid Leukemia |
| title_full |
Flow Cytometric Measurement of Blood Cells with BCR-ABL1 Fusion Protein in Chronic Myeloid Leukemia |
| title_fullStr |
Flow Cytometric Measurement of Blood Cells with BCR-ABL1 Fusion Protein in Chronic Myeloid Leukemia |
| title_full_unstemmed |
Flow Cytometric Measurement of Blood Cells with BCR-ABL1 Fusion Protein in Chronic Myeloid Leukemia |
| title_sort |
flow cytometric measurement of blood cells with bcr-abl1 fusion protein in chronic myeloid leukemia |
| publisher |
Nature Portfolio |
| publishDate |
2017 |
| url |
https://doaj.org/article/bc40746d211b48e79b0577d852b7ebdb |
| work_keys_str_mv |
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