High GPR56 surface expression correlates with a leukemic stem cell gene signature in CD34‐positive AML
Abstract Acute myeloid leukemia (AML) is driven by a minor fraction of leukemic stem cells (LSCs) whose persistence is considered being the primary cause of disease relapse. A detailed characterization of the surface immunophenotype of LSCs to discriminate them from bulk leukemic blasts may enable s...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-04-01
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| Series: | Cancer Medicine |
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| Online Access: | https://doi.org/10.1002/cam4.2053 |
| _version_ | 1797387162427064320 |
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| author | Shruti Daga Angelika Rosenberger Franz Quehenberger Nina Krisper Barbara Prietl Andreas Reinisch Armin Zebisch Heinz Sill Albert Wölfler |
| author_facet | Shruti Daga Angelika Rosenberger Franz Quehenberger Nina Krisper Barbara Prietl Andreas Reinisch Armin Zebisch Heinz Sill Albert Wölfler |
| author_sort | Shruti Daga |
| collection | DOAJ |
| description | Abstract Acute myeloid leukemia (AML) is driven by a minor fraction of leukemic stem cells (LSCs) whose persistence is considered being the primary cause of disease relapse. A detailed characterization of the surface immunophenotype of LSCs to discriminate them from bulk leukemic blasts may enable successful targeting of this population thereby improving patient outcomes in AML. To identify surface markers, which may reflect LSC activity at diagnosis, we performed a detailed analysis of 16 putative LSC markers in CD34/38 leukemic subcompartments of 150 diagnostic AML samples using multicolor flow cytometry. The most promising markers were then selected to determine a possible correlation of their expression with a recently published LSC gene signature. We found GPR56 and CLL‐1 to be the most prominently differently expressed surface markers in AML subcompartments. While GPR56 was highest expressed within the LSC‐enriched CD34+38− subcompartment as compared to CD34+38+ and CD34− leukemic bulk cells, CLL‐1 expression was lowest in CD34+38− leukemic cells and increased in CD34+38+ and CD34− blasts. Furthermore, high GPR56 surface expression in CD34+38− leukemic cells correlated with a recently published LSC gene expression signature and was associated with decreased overall survival in patients receiving intensive chemotherapy. In contrast, CLL‐1 expression correlated inversely with the LSC gene signature and was not informative on outcome. Our data strongly support GPR56 as a promising clinically relevant marker for identifying leukemic cells with LSC activity at diagnosis in CD34‐positive AML. |
| first_indexed | 2024-03-08T22:19:52Z |
| format | Article |
| id | doaj.art-04d90a6c94de47319cc3b03fe10b2578 |
| institution | Directory Open Access Journal |
| issn | 2045-7634 |
| language | English |
| last_indexed | 2024-03-08T22:19:52Z |
| publishDate | 2019-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Cancer Medicine |
| spelling | doaj.art-04d90a6c94de47319cc3b03fe10b25782023-12-18T12:55:50ZengWileyCancer Medicine2045-76342019-04-01841771177810.1002/cam4.2053High GPR56 surface expression correlates with a leukemic stem cell gene signature in CD34‐positive AMLShruti Daga0Angelika Rosenberger1Franz Quehenberger2Nina Krisper3Barbara Prietl4Andreas Reinisch5Armin Zebisch6Heinz Sill7Albert Wölfler8Division of Hematology Medical University of Graz Graz AustriaDivision of Hematology Medical University of Graz Graz AustriaInstitute of Medical Informatics, Statistics and Documentation Medical University of Graz Graz AustriaCBmed Center of Biomarker Research in Medicine Graz AustriaCBmed Center of Biomarker Research in Medicine Graz AustriaDivision of Hematology Medical University of Graz Graz AustriaDivision of Hematology Medical University of Graz Graz AustriaDivision of Hematology Medical University of Graz Graz AustriaDivision of Hematology Medical University of Graz Graz AustriaAbstract Acute myeloid leukemia (AML) is driven by a minor fraction of leukemic stem cells (LSCs) whose persistence is considered being the primary cause of disease relapse. A detailed characterization of the surface immunophenotype of LSCs to discriminate them from bulk leukemic blasts may enable successful targeting of this population thereby improving patient outcomes in AML. To identify surface markers, which may reflect LSC activity at diagnosis, we performed a detailed analysis of 16 putative LSC markers in CD34/38 leukemic subcompartments of 150 diagnostic AML samples using multicolor flow cytometry. The most promising markers were then selected to determine a possible correlation of their expression with a recently published LSC gene signature. We found GPR56 and CLL‐1 to be the most prominently differently expressed surface markers in AML subcompartments. While GPR56 was highest expressed within the LSC‐enriched CD34+38− subcompartment as compared to CD34+38+ and CD34− leukemic bulk cells, CLL‐1 expression was lowest in CD34+38− leukemic cells and increased in CD34+38+ and CD34− blasts. Furthermore, high GPR56 surface expression in CD34+38− leukemic cells correlated with a recently published LSC gene expression signature and was associated with decreased overall survival in patients receiving intensive chemotherapy. In contrast, CLL‐1 expression correlated inversely with the LSC gene signature and was not informative on outcome. Our data strongly support GPR56 as a promising clinically relevant marker for identifying leukemic cells with LSC activity at diagnosis in CD34‐positive AML.https://doi.org/10.1002/cam4.2053acute myeloid leukemiaCLL‐1gene expression signatureGPR56leukemic stem cells |
| spellingShingle | Shruti Daga Angelika Rosenberger Franz Quehenberger Nina Krisper Barbara Prietl Andreas Reinisch Armin Zebisch Heinz Sill Albert Wölfler High GPR56 surface expression correlates with a leukemic stem cell gene signature in CD34‐positive AML Cancer Medicine acute myeloid leukemia CLL‐1 gene expression signature GPR56 leukemic stem cells |
| title | High GPR56 surface expression correlates with a leukemic stem cell gene signature in CD34‐positive AML |
| title_full | High GPR56 surface expression correlates with a leukemic stem cell gene signature in CD34‐positive AML |
| title_fullStr | High GPR56 surface expression correlates with a leukemic stem cell gene signature in CD34‐positive AML |
| title_full_unstemmed | High GPR56 surface expression correlates with a leukemic stem cell gene signature in CD34‐positive AML |
| title_short | High GPR56 surface expression correlates with a leukemic stem cell gene signature in CD34‐positive AML |
| title_sort | high gpr56 surface expression correlates with a leukemic stem cell gene signature in cd34 positive aml |
| topic | acute myeloid leukemia CLL‐1 gene expression signature GPR56 leukemic stem cells |
| url | https://doi.org/10.1002/cam4.2053 |
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