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Mestrum SG, Vanblarcum RB, de Wit NC, Drent RJ, Boonen BT, van Hemert WL, Hopman AH, Ramaekers FC, Leers MP. Impact of the gating strategy for Ki-67 and Bcl-2 on the determination of proliferation and anti-apoptosis data by flow cytometry in non-malignant bone marrow aspirates and aspirates from patients with myeloid malignancies. Data Brief 2023; 49:109284. [PMID: 37409174 PMCID: PMC10319170 DOI: 10.1016/j.dib.2023.109284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 07/07/2023] Open
Abstract
This Data in Brief article displays a flow cytometric assay that was used for the acquisition and analyses of proliferative and anti-apoptotic activity in hematopoietic cells. This dataset includes analyses of the Ki-67 positive fraction (Ki-67 proliferation index) and Bcl-2 positive fraction (Bcl-2 anti-apoptotic index) of the different myeloid bone marrow (BM) cell populations in non-malignant BM, and in BM disorders, i.e. myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). The present dataset comprises 1) the percentage of the CD34 positive blast cells, erythroid cells, myeloid cells and monocytic cells, and 2) the determined Ki-67 positive fraction and Bcl-2 positive fraction of these cell populations in tabular form. This allows the comparison and reproduction of the data when these analyses are repeated in a different setting. Because gating the Ki-67 positive and Bcl-2 positive cells is a critical step in this assay, different gating approaches were compared to determine the most sensitive and specific approach. BM cells from aspirates of 50 non-malignant, 25 MDS and 27 AML cases were stained with 7 different antibody panels and subjected to flow cytometry for determination of the Ki-67 positive cells and Bcl-2 positive cells of the different myeloid cell populations. The Ki-67 or Bcl-2 positive cells were then divided by the total number of cells of the respective cell population to generate the Ki-67 positive fraction (Ki-67 proliferation index) or the Bcl-2 positive fraction (Bcl-2 anti-apoptotic index). The presented data may facilitate the establishment and standardization of flow cytometric analyses of the Ki-67 proliferation index and Bcl-2 anti-apoptotic index of the different myeloid cell populations in non-malignant BM as well as MDS and AML patients in other laboratories. Directions for proper gating of the Ki-67 positive and Bcl-2 positive fraction are crucial for achieving standardization among different laboratories. In addition, the data and the presented assay allows application of Ki-67 and Bcl-2 in a research and clinical setting and this approach can serve as the basis for optimization of the gating strategy and subsequent investigation of other cell biological processes besides proliferation and anti-apoptosis. These data can also promote future research into the role of these parameters in diagnosis of myeloid malignancies, prognosis of myeloid malignancies and therapeutic resistance against anti-cancer therapies in these malignancies. As specific populations were identified based on cell biological characteristics, these data can be useful for evaluating gating algorithms in flow cytometry in general by confirming the outcome (e.g. MDS or AML diagnosis) with the respective proliferation and anti-apoptotic profile of these malignancies. The Ki-67 proliferation index and Bcl-2 anti-apoptotic index may potentially be used for classification of MDS and AML based on supervised machine learning algorithms, while unsupervised machine learning can be deployed at the level of single cells to potentially distinguish non-malignant from malignant cells in the identification of minimal residual disease. Therefore, the present dataset may be of interest for internist-hematologists, immunologists with affinity for hemato-oncology, clinical chemists with sub-specialization of hematology and researchers in the field of hemato-oncology.
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Affiliation(s)
- Stefan G.C. Mestrum
- Department of Molecular Cell Biology, GROW-School for Oncology and Reproduction, Maastricht University Medical Center, Maastricht, the Netherlands
- Department of Clinical Chemistry & Hematology, Zuyderland Medical Center, Sittard-Geleen, the Netherlands
| | - Roanalis, B.Y. Vanblarcum
- Department of Clinical Chemistry & Hematology, Zuyderland Medical Center, Sittard-Geleen, the Netherlands
| | - Norbert C.J. de Wit
- Central Diagnostic Laboratory (CDL), Maastricht University Medical Center, Maastricht, the Netherlands
| | - Roosmarie J.M. Drent
- Department of Clinical Chemistry & Hematology, Zuyderland Medical Center, Sittard-Geleen, the Netherlands
| | - Bert T. Boonen
- Department of Orthopedic Surgery, Zuyderland Medical Center, Heerlen, the Netherlands
| | | | - Anton H.N. Hopman
- Department of Molecular Cell Biology, GROW-School for Oncology and Reproduction, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Frans C.S. Ramaekers
- Department of Molecular Cell Biology, GROW-School for Oncology and Reproduction, Maastricht University Medical Center, Maastricht, the Netherlands
- Nordic-MUbio, Susteren, the Netherlands
| | - Math P.G. Leers
- Department of Clinical Chemistry & Hematology, Zuyderland Medical Center, Sittard-Geleen, the Netherlands
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Raskovalova T, Scheffen L, Jacob MC, Vettier C, Bulabois B, Szymanski G, Chevalier S, Gonnet N, Park S, Labarère J. Comparative diagnostic accuracy between simplified and original flow cytometric gating strategies for peripheral blood neutrophil myeloperoxidase expression in ruling out myelodysplastic syndromes. PLoS One 2022; 17:e0276095. [PMCID: PMC9674135 DOI: 10.1371/journal.pone.0276095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 09/29/2022] [Indexed: 11/19/2022] Open
Abstract
Background Flow cytometric analysis of peripheral blood neutrophil myeloperoxidase expression is accurate in ruling out myelodyplastic syndromes (MDS) but might not be suitable for implementation in busy clinical laboratories. We aimed to simplify the original gating strategy and examine its accuracy. Methods Using the individual data from 62 consecutive participants enrolled in a prospective validation study, we assessed the agreement in intra-individual robust coefficient of variation (RCV) of peripheral blood neutrophil myeloperoxidase expression and compared diagnostic accuracy between the simplified and original gating strategies. Results Cytomorphological evaluation of bone marrow aspirate confirmed MDS in 23 patients (prevalence, 37%), unconfirmed MDS in 32 patients (52%), and was uninterpretable in 7 patients (11%). Median intra-individual RCV for simplified and original gating strategies were 30.7% (range, 24.7–54.4) and 30.6% (range, 24.7–54.1), with intra-class correlation coefficient quantifying absolute agreement equal to 1.00 (95% confidence interval [CI], 0.99 to 1.00). The areas under the receiver operating characteristic (ROC) curves were 0.93 (95% CI, 0.82–0.98) and 0.92 (95% CI, 0.82–0.98), respectively (P = .32). Using simplified or original gating strategy, intra-individual RCV values lower than a pre-specified threshold of 30.0% ruled out MDS for 35% (19 of 55) patients, with both sensitivity and negative predictive value estimates of 100%. Conclusions The simplified gating strategy performs as well as the original one for ruling out MDS and has the potential to save time and reduce resource utilization. Yet, prospective validation of the simplified gating strategy is warranted before its adoption in routine. Trial registration ClinicalTrials.gov Identifier: NCT03363399 (First posted on December 6, 2017).
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Affiliation(s)
- Tatiana Raskovalova
- Institute for Advanced Biosciences, INSERM U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
- Laboratoire d’Immunologie, Grenoble University Hospital, Grenoble, France
- * E-mail:
| | - Laura Scheffen
- Institute for Advanced Biosciences, INSERM U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
| | - Marie-Christine Jacob
- Institute for Advanced Biosciences, INSERM U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
- Laboratoire d’Immunologie, Grenoble University Hospital, Grenoble, France
| | - Claire Vettier
- Laboratoire d’Hématologie Biologique, Grenoble University Hospital, Grenoble, France
| | - Bénédicte Bulabois
- Laboratoire d’Hématologie Biologique, Grenoble University Hospital, Grenoble, France
| | - Gautier Szymanski
- Laboratoire d’Hématologie Biologique, Grenoble University Hospital, Grenoble, France
| | - Simon Chevalier
- Laboratoire d’Hématologie Biologique, Grenoble University Hospital, Grenoble, France
| | - Nicolas Gonnet
- CIC 1406, INSERM, Université Grenoble Alpes, Grenoble University Hospital, Grenoble, France
| | - Sophie Park
- Institute for Advanced Biosciences, INSERM U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
- Clinique Universitaire d’Hématologie, Grenoble University Hospital, Grenoble, France
| | - José Labarère
- Clinical Epidemiology Unit, Grenoble University Hospital, Grenoble, France
- TIMC-IMAG, UMR 5525, CNRS, Université Grenoble Alpes, Grenoble, France
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The Proliferation Index of Erythroid Cells Predicts the Development of Transfusion-dependence in Myelodysplastic Syndrome Patients With Mildly Reduced Hemoglobin Levels at Initial Diagnosis. Hemasphere 2022; 6:e804. [PMID: 36382052 PMCID: PMC9649276 DOI: 10.1097/hs9.0000000000000804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 10/12/2022] [Indexed: 01/24/2023] Open
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