PMID- 38474094 OWN - NLM STAT- MEDLINE DCOM- 20240314 LR - 20240315 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 25 IP - 5 DP - 2024 Feb 29 TI - Phenotypic Analysis of Hematopoietic Stem and Progenitor Cell Populations in Acute Myeloid Leukemia Based on Spectral Flow Cytometry, a 20-Color Panel, and Unsupervised Learning Algorithms. LID - 10.3390/ijms25052847 [doi] LID - 2847 AB - The analysis of hematopoietic stem and progenitor cell populations (HSPCs) is fundamental in the understanding of normal hematopoiesis as well as in the management of malignant diseases, such as leukemias, and in their diagnosis and follow-up, particularly the measurement of treatment efficiency with the detection of measurable residual disease (MRD). In this study, I designed a 20-color flow cytometry panel tailored for the comprehensive analysis of HSPCs using a spectral cytometer. My investigation encompassed the examination of forty-six samples derived from both normal human bone marrows (BMs) and patients with acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS) along with those subjected to chemotherapy and BM transplantation. By comparing my findings to those obtained through conventional flow cytometric analyses utilizing multiple tubes, I demonstrate that my innovative 20-color approach enables a more in-depth exploration of HSPC subpopulations and the detection of MRD with at least comparable sensitivity. Furthermore, leveraging advanced analytical tools such as t-SNE and FlowSOM learning algorithms, I conduct extensive cross-sample comparisons with two-dimensional gating approaches. My results underscore the efficacy of these two methods as powerful unsupervised alternatives for manual HSPC subpopulation analysis. I expect that in the future, complex multi-dimensional flow cytometric data analyses, such as those employed in this study, will be increasingly used in hematologic diagnostics. FAU - Matthes, Thomas AU - Matthes T AUID- ORCID: 0000-0002-4875-2477 AD - Hematology Service, Oncology Department, University Hospital Geneva, Rue Gabrielle Perret-Gentil, 1205 Geneva, Switzerland. AD - Clinical Pathology Service, Diagnostics Department, University Hospital Geneva, Rue Gabrielle Perret-Gentil, 1205 Geneva, Switzerland. LA - eng GR - unrestricted funding for reagents/Cytek Biosciences/ PT - Journal Article DEP - 20240229 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 SB - IM MH - Humans MH - Flow Cytometry/methods MH - Unsupervised Machine Learning MH - *Leukemia, Myeloid, Acute/drug therapy MH - Hematopoietic Stem Cells/pathology MH - *Hematopoietic Stem Cell Transplantation/methods MH - Neoplasm, Residual/diagnosis PMC - PMC10932439 OTO - NOTNLM OT - acute myeloid leukemia OT - flow cytometry OT - hematopoiesis OT - leukemia OT - measurable residual disease OT - myelodysplastic syndrome OT - stem cells OT - unsupervised analysis COIS- The author declares no conflicts of interest. EDAT- 2024/03/13 06:46 MHDA- 2024/03/14 06:46 PMCR- 2024/02/29 CRDT- 2024/03/13 01:23 PHST- 2024/02/03 00:00 [received] PHST- 2024/02/22 00:00 [revised] PHST- 2024/02/26 00:00 [accepted] PHST- 2024/03/14 06:46 [medline] PHST- 2024/03/13 06:46 [pubmed] PHST- 2024/03/13 01:23 [entrez] PHST- 2024/02/29 00:00 [pmc-release] AID - ijms25052847 [pii] AID - ijms-25-02847 [pii] AID - 10.3390/ijms25052847 [doi] PST - epublish SO - Int J Mol Sci. 2024 Feb 29;25(5):2847. doi: 10.3390/ijms25052847.