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Pham DL, Gillette AA, Riendeau J, Wiech K, Guzman EC, Datta R, Skala MC. Perspectives on label-free microscopy of heterogeneous and dynamic biological systems. J Biomed Opt 2025; 29:S22702. [PMID: 38434231 PMCID: PMC10903072 DOI: 10.1117/1.jbo.29.s2.s22702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/22/2023] [Accepted: 12/14/2023] [Indexed: 03/05/2024]
Abstract
Significance Advancements in label-free microscopy could provide real-time, non-invasive imaging with unique sources of contrast and automated standardized analysis to characterize heterogeneous and dynamic biological processes. These tools would overcome challenges with widely used methods that are destructive (e.g., histology, flow cytometry) or lack cellular resolution (e.g., plate-based assays, whole animal bioluminescence imaging). Aim This perspective aims to (1) justify the need for label-free microscopy to track heterogeneous cellular functions over time and space within unperturbed systems and (2) recommend improvements regarding instrumentation, image analysis, and image interpretation to address these needs. Approach Three key research areas (cancer research, autoimmune disease, and tissue and cell engineering) are considered to support the need for label-free microscopy to characterize heterogeneity and dynamics within biological systems. Based on the strengths (e.g., multiple sources of molecular contrast, non-invasive monitoring) and weaknesses (e.g., imaging depth, image interpretation) of several label-free microscopy modalities, improvements for future imaging systems are recommended. Conclusion Improvements in instrumentation including strategies that increase resolution and imaging speed, standardization and centralization of image analysis tools, and robust data validation and interpretation will expand the applications of label-free microscopy to study heterogeneous and dynamic biological systems.
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Affiliation(s)
- Dan L. Pham
- University of Wisconsin—Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
| | | | | | - Kasia Wiech
- University of Wisconsin—Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
| | | | - Rupsa Datta
- Morgridge Institute for Research, Madison, Wisconsin, United States
| | - Melissa C. Skala
- University of Wisconsin—Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
- Morgridge Institute for Research, Madison, Wisconsin, United States
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Jin J, Mao X, Zhang D. A differential diagnosis method for systemic CAEBV and the prospect of EBV-related immune cell markers via flow cytometry. Ann Med 2024; 56:2329136. [PMID: 38502913 PMCID: PMC10953786 DOI: 10.1080/07853890.2024.2329136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 02/23/2024] [Indexed: 03/21/2024] Open
Abstract
Chronic active Epstein-Barr virus (CAEBV) infection of the T-cell or Natural killer (NK)-cell type, systemic form (systemic CAEBV or sCAEBV) was defined by the WHO in 2017 as an EBV-related lymphoproliferative disorder and is listed as an EBV-positive T-cell and NK-cell proliferation. The clinical manifestations and prognoses are heterogeneous. This makes systemic CAEBV indistinguishable from other EBV-positive T-cell and NK-cell proliferations. Early diagnosis of systemic CAEBV and early hematopoietic stem cell transplantation can improve patient prognosis. At present, the diagnosis of systemic CAEBV relies mainly on age, clinical manifestations, and cell lineage, incurring missed diagnosis, misdiagnosis, long diagnosis time, and inability to identify high-risk systemic CAEBV early. The diagnostic methods for systemic CAEBV are complicated and lack systematic description. The recent development of diagnostic procedures, including molecular biological and immunological techniques such as flow cytometry, has provided us with the ability to better understand the proliferation of other EBV-positive T cells and NK cells, but there is no definitive review of their value in diagnosing systemic CAEBV. This article summarizes the recent progress in systemic CAEBV differential diagnosis and the prospects of flow cytometry.
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Affiliation(s)
- Jie Jin
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xia Mao
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Donghua Zhang
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Zhang S, Ling J, Cui K, Zhan S, Zheng J, Wang W, Fan J, Hu S. Bernard-Soulier syndrome caused by two novel heterozygous GP1BA gene mutations: a case report and literature review. Hematology 2024; 29:2334642. [PMID: 38564005 DOI: 10.1080/16078454.2024.2334642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 03/20/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Bernard-Soulier syndrome (BSS) is a rare inherited macrothrombocytopenia, usually autosomal recessive, which is characterized by prolonged bleeding, thrombocytopenia, and abnormally large platelets. METHODS For more than 6 years, we misdiagnosed a patient with BSS without an obvious bleeding tendency as having idiopathic thrombocytopenia purpura (ITP), prior to obtaining a genetic analysis. On admission, routine hematology showed a platelet count of 30 × 109/L and mean platelet volume (MPV) of 14.0 fL. RESULTS Whole-exome sequencing revealed two likely pathogenic heterozygous mutations (c.95_101del and c.1012del) in GP1BA. Flow cytometry analysis of platelet membrane glycoproteins indicated that the expression of GP1b was 0.28% of the normal level. Platelet aggregation tests indicated that platelet aggregation was inhibited by ristocetin- (1.7%), ADP- (14.5%), and arachidonic acid- (5.6%) induced platelet aggregation. A literature review identified reports on 53 mutations in the GP1BA gene in 253 patients, 29 mutations in the GP1BB gene in 90 patients, and 32 mutations in the GP9 gene in 114 patients. CONCLUSION This case report describes two novel gene mutation sites that have not been reported previously, enriching understanding of the GP1BA mutation spectrum.
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Affiliation(s)
- Senlin Zhang
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Jing Ling
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Kai Cui
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Shihong Zhan
- Department of Neonatology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Jiajia Zheng
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Wenyi Wang
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Junjie Fan
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
| | - Shaoyan Hu
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou, People's Republic of China
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4
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Bacon A, Cartagena García C, van Schie KA, Toes REM, Busnel JM. A whole blood-based functional assay to characterize immunoglobulin A effector functions. Autoimmunity 2024; 57:2341629. [PMID: 38616577 DOI: 10.1080/08916934.2024.2341629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 04/06/2024] [Indexed: 04/16/2024]
Abstract
Most investigations on the immune cell-activating potency of IgA used purified total IgA and/or specific isolated cell populations. As IgA2 has been reported to be more pro-inflammatory than IgA1, we aimed to employ a fast and convenient whole blood-based assay to individually probe the capacity of the two IgA subclasses to activate immune cells in close physiological conditions. To this end, whole blood from healthy donors (n = 10) was stimulated with immobilized IgA1, IgA2m1 or IgA2m2 (the two main allotypic variants of IgA2). Activation of major leukocyte subsets was measured using a 10-color flow cytometry panel providing access to the expression of 5 activation markers on 6 different immune cell subsets. While capturing some heterogeneity of responses among donors, IgA2m1 and IgA2m2 systematically showed a stronger activation profile compared to IgA1 in a variety of dimensions. For example, both IgA2 allotypes led to stronger modulations of CD54, CD11b, CD62L, CD66b or CD69, on both or either monocytes or neutrophils, indicating a more pronounced pro-inflammatory effect for this subclass than IgA1. By taking into account donor-specific soluble and cellular components this whole blood-based functional approach provides new perspectives to further investigate IgA effector functions in mechanistic studies and/or translational research.
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Affiliation(s)
- Alice Bacon
- Rheumatology Department, Leiden University Medical Center (LUMC), Leiden, The Netherlands
| | | | - Karin A van Schie
- Rheumatology Department, Leiden University Medical Center (LUMC), Leiden, The Netherlands
| | - René E M Toes
- Rheumatology Department, Leiden University Medical Center (LUMC), Leiden, The Netherlands
| | - Jean-Marc Busnel
- Research Department, Beckman Coulter Life Sciences, Marseille, France
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Orvain C, Ali N, Othus M, Rodríguez-Arbolí E, Milano F, Le CM, Sandmaier BM, Scott BL, Appelbaum FR, Walter RB. Relative prognostic value of flow cytometric measurable residual disease before allogeneic hematopoietic cell transplantation for adults with MDS/AML or AML. Am J Hematol 2024; 99:862-870. [PMID: 38380817 PMCID: PMC11001509 DOI: 10.1002/ajh.27259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/10/2024] [Accepted: 02/13/2024] [Indexed: 02/22/2024]
Abstract
Multiparameter flow cytometry (MFC) measurable residual disease (MRD) before allogeneic hematopoietic cell transplantation (HCT) independently predicts poor outcomes in acute myeloid leukemia (AML). Conversely, its prognostic value in the newly defined disease entity, myelodysplastic neoplasm (MDS)/AML is unknown. To assess the relationship between disease type, pre-HCT MRD, and post-HCT outcomes, we retrospectively analyzed 1265 adults with MDS/AML (n = 151) or AML (n = 1114) who received a first allograft in first or second morphologic remission at a single institution between April 2006 and March 2023. At 3 years, relapse rates (29% for MDS/AML vs. 29% for AML, p = .98), relapse-free survival (RFS; 50% vs. 55%, p = .22), overall survival (OS; 52% vs. 60%, p = .073), and non-relapse mortality (22% vs. 16%, p = .14) were not statistically significantly different. However, a significant interaction was found between pre-HCT MFC MRD and disease type (MDS/AML vs. AML) for relapse (p = .009), RFS (p = .011), and OS (p = .039). The interaction models indicated that the hazard ratios (HRs) for the association between pre-HCT MRD and post-HCT outcomes were lower in patients with MDS/AML (for relapse: HR = 1.75 [0.97-3.15] in MDS/AML vs. 4.13 [3.31-5.16] in AML; for RFS: HR = 1.58 [1.02-2.45] vs. 2.98 [2.48-3.58]; for OS: HR = 1.50 [0.96-2.35] vs. 2.52 [2.09-3.06]). On the other hand, residual cytogenetic abnormalities at the time of HCT were equally informative in MDS/AML as in AML patients. Our data indicate that MFC-based pre-HCT MRD testing, but not testing for residual cytogenetic abnormalities, is less informative for MDS/AML than AML patients when used for prognostication of post-HCT outcomes.
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Affiliation(s)
- Corentin Orvain
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Maladies du Sang, CHU d'Angers, Angers, France
- Fédération Hospitalo-Universitaire Grand-Ouest Acute Leukemia (FHU-GOAL), Angers, France
- Université d'Angers, Inserm UMR 1307, CNRS UMR 6075, Nantes Université, Angers, France
| | - Naveed Ali
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, Division of Hematology and Oncology, University of Washington, Seattle, Washington, USA
| | - Megan Othus
- Public Health Sciences Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Eduardo Rodríguez-Arbolí
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Hematology, Hospital Universitario Virgen del Rocío, Instituto de Biomedicina de Sevilla (IBIS/CSIC), University of Seville, Seville, Spain
| | - Filippo Milano
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, Division of Hematology and Oncology, University of Washington, Seattle, Washington, USA
| | - Calvin M Le
- Department of Medicine, Residency Program, University of Washington, Seattle, Washington, USA
| | - Brenda M Sandmaier
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, Division of Hematology and Oncology, University of Washington, Seattle, Washington, USA
| | - Bart L Scott
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, Division of Hematology and Oncology, University of Washington, Seattle, Washington, USA
| | - Frederick R Appelbaum
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, Division of Hematology and Oncology, University of Washington, Seattle, Washington, USA
| | - Roland B Walter
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Medicine, Division of Hematology and Oncology, University of Washington, Seattle, Washington, USA
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
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Brett VE, Dignat George F, James C. Circulating endothelial cells in pathophysiology. Curr Opin Hematol 2024; 31:148-154. [PMID: 38362895 DOI: 10.1097/moh.0000000000000814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
PURPOSE OF REVIEW The purpose of this review is to synthesize recent insights into the roles and importance of circulating endothelial cells (CECs) as indicators of the severity, progression, and prognosis of vascular-related diseases. RECENT FINDINGS Recent studies have identified elevated counts of CECs in pathological conditions, notably inflammatory or cardiovascular diseases such as acute myocardial infarction and heart failure, underscoring their potential as sensitive indicators of disease. Furthermore, the rise in CEC levels in cancer patients, particularly with disease advancement, points to their role in cancer-associated angiogenesis and response to treatment. SUMMARY This review underscores the evolving significance of CECs as markers for evaluating the gravity and advancement of diseases with vascular injury, including cardiovascular diseases, cancer, inflammatory conditions, and thromboembolic events. These last years, efforts made to standardize flow cytometry detection of CEC and the development of highly sensitive techniques to isolate, quantify or phenotype rare cells open promising avenues for clinical application. This may yield extensive knowledge regarding the mechanisms by which endothelial cells contribute to a variety of vascular-related disorders and their clinical value as emerging biomarkers.
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Affiliation(s)
- Victor Emmanuel Brett
- University of Bordeaux, Institut national de la santé et de la recherche médicale, Biologie des maladies cardio-vasculaires, U1034
- Laboratory of Hematology, Bordeaux University Hospital, Pessac
| | - Francoise Dignat George
- Aix Marseille Univ, INSERM, INRAE, C2VN, UFR de Pharmacie
- Hematology and Vascular Biology Department, CHU La Conception, Assistance Publique-Hôpitaux de Marseille, Marseille, France
| | - Chloe James
- University of Bordeaux, Institut national de la santé et de la recherche médicale, Biologie des maladies cardio-vasculaires, U1034
- Laboratory of Hematology, Bordeaux University Hospital, Pessac
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Chen K, Zhang Y, Li C, Liu Y, Cao Q, Zhang X. Clinical value of molecular subtypes identification based on anoikis-related lncRNAs in castration-resistant prostate cancer. Cell Signal 2024; 117:111104. [PMID: 38373667 DOI: 10.1016/j.cellsig.2024.111104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 12/07/2023] [Accepted: 02/15/2024] [Indexed: 02/21/2024]
Abstract
BACKGROUND Anoikis is a distinctive type of apoptosis. It is involved in tumor progression and metastasis. But its function in castration-resistant prostate cancer (CRPC) remains veiled. We aimed to develop a prognostic indicator based on anoikis-related long non-coding RNAs (arlncRNAs) and to investigate their biological function in CRPC. MATERIAL AND METHOD Differentially expressed anoikis-related genes were extracted from two CRPC datasets, GSE51873, and GSE78201. Four lncRNAs associated with the anoikis-related genes were selected. A risk model based on these lncRNAs was developed and validated in The Cancer Genome Atlas (TCGA) and the Memorial Sloan-Kettering Cancer Center (MSKCC) prostate cancer cohorts. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis, immune infiltration, immune checkpoints expression, and drug susceptibility were performed based on the model. To identify the biofunction of anoikis-related lncRNA, CCK-8 assays, colony formation assays, and flow cytometry were used. RESULT Twenty-nine anoikis-related genes were differentially expressed in the CRPC datasets. And 36 prognostic arlncRNAs were selected for the LASSO Cox analysis. Patients were subsequently classified into two subtypes by constructing an anoikis-related lncRNA based prognostic index (ARPI). The accuracy of this index was validated. KEGG enrichment analysis revealed that the high-ARPI group was enriched in cancer-related and immune-related pathways. Immune infiltration analysis has indicated a positive association between high-ARPI groups and increased immune infiltration. Fulvestrant, OSI-027, Lapatinib, Dabrafenib, and Palbociclib were identified as potential sensitive drugs for high-ARPI patients. In vitro experiments exhibited that silencing LINC01138 dampened the proliferation, migration and enzalutamide resistance in CRPC. Furthermore, it stimulated apoptosis and inhibited the eithelial-mesenchymal transition process. CONCLUSION Four arlncRNAs were identified and a risk model was established to predict the prognosis of patients with prostate cancer. Immune infiltration and drug susceptibility analysis revealed a potential therapeutic strategy for patients with castration-resistant prostate cancer.
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Affiliation(s)
- Kailei Chen
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Urology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yunxuan Zhang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Urology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chengyong Li
- Department of Urology, the Second Hospital of Shanxi Medical University, Taiyuan 030000, China
| | - Yuenan Liu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Urology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Qi Cao
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Urology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Xiaoping Zhang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Urology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen 518000, China..
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8
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Kim SY, Huh HJ. Toward Standardization of Flow-Cytometric Immunophenotyping for the Diagnosis and Monitoring of Hematologic Malignancies. Ann Lab Med 2024; 44:193-194. [PMID: 38145894 PMCID: PMC10813827 DOI: 10.3343/alm.2023.0467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023] Open
Affiliation(s)
- Seon Young Kim
- Department of Laboratory Medicine, Chungnam National University College of Medicine, Daejeon, Korea
| | - Hee Jin Huh
- Department of Laboratory Medicine, Dongguk University Ilsan Hospital, Goyang, Korea
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Qi F, Wei Y, Wu M, Sun Y, Xie Y, Lin N, Liu W, Wang W, Song Y, Zhu J. Immunotyping of peripheral blood lymphocytes by flow cytometry reveals Th cell as a potential prognostic biomarker for extranodal NK/T-cell lymphoma. Ann Hematol 2024; 103:1643-1653. [PMID: 38191717 DOI: 10.1007/s00277-023-05605-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 12/21/2023] [Indexed: 01/10/2024]
Abstract
This study aimed to explore the distribution, characteristics and prognostic value of baseline peripheral blood lymphocyte subsets in patients with extranodal NK/T-cell lymphoma (NKTCL). We conducted this cross-sectional study of 205 newly-diagnosed NKTCL patients receiving first-line chemotherapy and radiation at our institute between 2010 and 2020. Baseline peripheral blood lymphocytes were detected using flow cytometry, and the clinical value was analyzed. Compared with healthy controls, patients with NKTCL presented with a distinct peripheral immunity with higher levels of cytotoxic CD8+ T cells (33.230 ± 12.090% vs. 27.060 ± 4.010%, p < 0.001) and NKT cells (7.697 ± 7.219% vs. 3.550 ± 2.088%, p < 0.001) but lower proportions of suppressive regulatory T cells (Treg, 2.999 ± 1.949% vs. 3.420 ± 1.051%, p = 0.003) and CD4+ helper T cells (Th, 33.084 ± 11.361% vs. 37.650 ± 3.153%, p < 0.001). Peripheral lymphocytes were differentially distributed according to age, stage, and primary site in patients with NKTCL. The proportion of Th cells/lymphocytes was associated with tumor burden reflected by stage (p = 0.037), serum lactate dehydrogenase (p = 0.0420), primary tumor invasion (p = 0.025), and prognostic index for NK/T-cell lymphoma (PINK) score (p = 0.041). Furthermore, elevated proportions of T cells (58.9% vs. 76.4%, p = 0.005), Th cells (56.3% vs. 68.8%, p = 0.047), or Treg cells (49.5% vs. 68.9%, p = 0.040) were associated with inferior 5-year progression-free survivals (PFS) via univariable survival analysis. Multivariate cox regression revealed elevated Th cells as an independent predictor for unfavorable PFS (HR = 2.333, 95% CI, 1.030-5.288, p = 0.042) in NKTCL. These results suggested the proportion of Th cells positively correlated with tumor burden and was a potential non-invasive biomarker for inferior survival for patients with NKTCL.
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Affiliation(s)
- Fei Qi
- General Department, Beijing Chest Hospital, Capital Medical University, Beijing, 101149, China
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Lymphoma, Peking University Cancer Hospital & Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Yuce Wei
- Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Meng Wu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Lymphoma, Peking University Cancer Hospital & Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Yan Sun
- Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Yan Xie
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Lymphoma, Peking University Cancer Hospital & Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Ningjing Lin
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Lymphoma, Peking University Cancer Hospital & Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Weiping Liu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Lymphoma, Peking University Cancer Hospital & Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Weihu Wang
- Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing, 100142, China
| | - Yuqin Song
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Lymphoma, Peking University Cancer Hospital & Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China.
| | - Jun Zhu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Lymphoma, Peking University Cancer Hospital & Institute, No. 52 Fucheng Road, Haidian District, Beijing, 100142, China.
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Zanni-Ruiz E, Mayorga L, Pavarotti M. Flow cytometry protocol for GLUT4-myc detection on cell surfaces. Biosci Rep 2024; 44:BSR20231987. [PMID: 38533799 PMCID: PMC11016532 DOI: 10.1042/bsr20231987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 03/05/2024] [Accepted: 03/26/2024] [Indexed: 03/28/2024] Open
Abstract
Insulin and muscle contraction trigger GLUT4 translocation to the plasma membrane, which increases glucose uptake by muscle cells. Insulin resistance and Type 2 diabetes are the result of impaired GLUT4 translocation. Quantifying GLUT4 translocation is essential for comprehending the intricacies of both physiological and pathophysiological processes involved in glucose metabolism. The most commonly used methods for measuring GLUT4 translocation are the ELISA-type assay and the immunofluorescence assay. While some reports suggest that flow cytometry could be useful in quantifying GLUT4 translocation, this technique is not frequently used. Much of our current understanding of the regulation of GLUT4 has been based on experiments using the rat myoblast cell line (L6 cell) which expresses GLUT4 with a myc epitope on the exofacial loop. In the present study, we use the L6-GLUT4myc cell line to develop a flow cytometry-based approach to detect GLUT4 translocation. Flow cytometry offers the advantages of both immunofluorescence and ELISA-based assays. It allows easy identification of separate cell populations in the sample, similar to immunofluorescence, while providing results based on a population-level analysis of multiple individual cells, like an ELISA-based assay. Our results demonstrate a 0.6-fold increase with insulin stimulation compared with basal conditions. Finally, flow cytometry consistently yielded results across different experiments and exhibited sensitivity under the tested conditions.
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Affiliation(s)
- Emilia Zanni-Ruiz
- Laboratorio de Transporte Intracelular, Instituto de Histología y Embriología de Mendoza Dr. Mario H Burgos, Mendoza, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
- Universidad Nacional de Cuyo, Mendoza, Argentina
| | - Luis Segundo Mayorga
- Laboratorio de Transporte Intracelular, Instituto de Histología y Embriología de Mendoza Dr. Mario H Burgos, Mendoza, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Mendoza, Argentina
- Universidad Nacional de Cuyo, Mendoza, Argentina
| | - Martin Alejandro Pavarotti
- Laboratorio de Transporte Intracelular, Instituto de Histología y Embriología de Mendoza Dr. Mario H Burgos, Mendoza, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
- Universidad Nacional de Cuyo, Mendoza, Argentina
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Wei S, Lu C, Li S, Zhang Q, Cheng R, Pan S, Wu Q, Zhao X, Tian X, Zeng X, Liu Y. Efficacy and safety of mesenchymal stem cell-derived microvesicles in mouse inflammatory arthritis. Int Immunopharmacol 2024; 131:111845. [PMID: 38531171 DOI: 10.1016/j.intimp.2024.111845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 02/28/2024] [Accepted: 03/08/2024] [Indexed: 03/28/2024]
Abstract
OBJECTIVE To determine the effective and safe intravenous doses of mesenchymal stem cells (MSCs)-derived microvesicles (MVs) and to elucidate the possible causes of death in mice receiving high-dose MVs. METHODS MVs were isolated from human MSCs by gradient centrifugation. Mice with collagen-induced arthritis were treated with different doses of intravenous MVs or MSCs. Arthritis severity, white blood cell count, and serum C-reactive protein levels were measured. To assess the safety profile of MSCs and MVs, mice were treated with different doses of MSCs and MVs, and LD50 was calculated. Mouse lungs and heart were assessed by live fluorescence imaging, histopathological measurements, and immunohistochemistry to explore the possible causes of death. Serum concentrations of cTnT, cTnI, and CK-MB were determined by ELISA. With the H9C2 cardiomyocyte cell line, cellular uptake of MVs was observed using confocal microscopy and cell toxicity was assessed by CCK-8 and flow cytometry. RESULTS Intravenous treatment with MSCs and MVs alleviated inflammatory arthritis, while high doses of MSCs and MVs were lethal. Mice receiving a maximum dose of MSCs (0.1 mL of MSCs at 109/mL) died immediately, while mice receiving a maximum dose of MVs (0.1 mL of MVs at 1012/mL) exhibited tears, drooling, tachycardia, shortness of breath, unbalanced rollover, bouncing, circular crawling, mania, and death. Some mice died after exhibiting convulsions and other symptoms. All mice died shortly after injecting the maximum dose of MSCs. Histologically, mice receiving high doses of MSCs frequently developed pulmonary embolism, while those receiving high doses of MVs died of myocardial infarction. Consistently, the serum levels of cTnT, cTnI, and CK-MB were significantly increased in the MVs-treated group (P < 0.05). The LD50 of intravenous MVs was 1.60 × 1012/kg. Further, MVs could enter the cell. High doses of MVs induced cell apoptosis, though low concentrations of MVs induced cell proliferation. CONCLUSIONS Appropriate dosages of MVs and MSCs are effective treatments for inflammatory arthritis while MVs and MSCs overdose is unsafe by causing cardiopulmonary complications.
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Affiliation(s)
- Shixiong Wei
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, NO. 1 Shuai Fu Yuan, Wang Fu Jing street, Beijing 100730, China; Department of Rheumatology & Department of Rheumatology and Immunology, West China Hospital, Sichuan University, No.37 Guoxue xiang Wuhou District, Chengdu City, Sichuan Province 610041, China
| | - Chenyang Lu
- Division of Rheumatology, Department of Internal Medicine, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510630, China
| | - Sujia Li
- Department of Rheumatology & Department of Rheumatology and Immunology, West China Hospital, Sichuan University, No.37 Guoxue xiang Wuhou District, Chengdu City, Sichuan Province 610041, China
| | - Qiuping Zhang
- Department of Rheumatology & Department of Rheumatology and Immunology, West China Hospital, Sichuan University, No.37 Guoxue xiang Wuhou District, Chengdu City, Sichuan Province 610041, China
| | - Ruijuan Cheng
- Department of Rheumatology & Department of Rheumatology and Immunology, West China Hospital, Sichuan University, No.37 Guoxue xiang Wuhou District, Chengdu City, Sichuan Province 610041, China
| | - ShuYue Pan
- Department of Rheumatology & Department of Rheumatology and Immunology, West China Hospital, Sichuan University, No.37 Guoxue xiang Wuhou District, Chengdu City, Sichuan Province 610041, China
| | - QiuHong Wu
- Department of Rheumatology & Department of Rheumatology and Immunology, West China Hospital, Sichuan University, No.37 Guoxue xiang Wuhou District, Chengdu City, Sichuan Province 610041, China
| | - Xueting Zhao
- Department of Rheumatology & Department of Rheumatology and Immunology, West China Hospital, Sichuan University, No.37 Guoxue xiang Wuhou District, Chengdu City, Sichuan Province 610041, China
| | - Xinping Tian
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, NO. 1 Shuai Fu Yuan, Wang Fu Jing street, Beijing 100730, China.
| | - Xiaofeng Zeng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, NO. 1 Shuai Fu Yuan, Wang Fu Jing street, Beijing 100730, China.
| | - Yi Liu
- Department of Rheumatology & Department of Rheumatology and Immunology, West China Hospital, Sichuan University, No.37 Guoxue xiang Wuhou District, Chengdu City, Sichuan Province 610041, China.
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Vora N, Shekar P, Hanulia T, Esmail M, Patra A, Georgakoudi I. Deep learning-enabled detection of rare circulating tumor cell clusters in whole blood using label-free, flow cytometry. Lab Chip 2024; 24:2237-2252. [PMID: 38456773 PMCID: PMC11019838 DOI: 10.1039/d3lc00694h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 01/19/2024] [Indexed: 03/09/2024]
Abstract
Metastatic tumors have poor prognoses for progression-free and overall survival for all cancer patients. Rare circulating tumor cells (CTCs) and rarer circulating tumor cell clusters (CTCCs) are potential biomarkers of metastatic growth, with CTCCs representing an increased risk factor for metastasis. Current detection platforms are optimized for ex vivo detection of CTCs only. Microfluidic chips and size exclusion methods have been proposed for CTCC detection; however, they lack in vivo utility and real-time monitoring capability. Confocal backscatter and fluorescence flow cytometry (BSFC) has been used for label-free detection of CTCCs in whole blood based on machine learning (ML) enabled peak classification. Here, we expand to a deep-learning (DL)-based, peak detection and classification model to detect CTCCs in whole blood data. We demonstrate that DL-based BSFC has a low false alarm rate of 0.78 events per min with a high Pearson correlation coefficient of 0.943 between detected events and expected events. DL-based BSFC of whole blood maintains a detection purity of 72% and a sensitivity of 35.3% for both homotypic and heterotypic CTCCs starting at a minimum size of two cells. We also demonstrate through artificial spiking studies that DL-based BSFC is sensitive to changes in the number of CTCCs present in the samples and does not add variability in detection beyond the expected variability from Poisson statistics. The performance established by DL-based BSFC motivates its use for in vivo detection of CTCCs. Using transfer learning, we additionally validate DL-based BSFC on blood samples from different species and cancer cell types. Further developments of label-free BSFC to enhance throughput could lead to critical applications in the clinical detection of CTCCs and ex vivo isolation of CTCC from whole blood with minimal disruption and processing steps.
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Affiliation(s)
- Nilay Vora
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA.
| | - Prashant Shekar
- Department of Mathematics, Embry-Riddle Aeronautical University, Daytona Beach, FL, 32114, USA
| | - Taras Hanulia
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA.
- Institute of Physics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Michael Esmail
- Tufts Comparative Medicine Services, Tufts University, Medford, MA, 02155, USA
| | - Abani Patra
- Data Intensive Studies Center, Tufts University, Medford, MA, 02155, USA
| | - Irene Georgakoudi
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA.
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13
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von Lersner AK, Fernandes F, Ozawa PMM, Jackson M, Masureel M, Ho H, Lima SM, Vagner T, Sung BH, Wehbe M, Franze K, Pua H, Wilson JT, Irish JM, Weaver AM, Di Vizio D, Zijlstra A. Multiparametric Single-Vesicle Flow Cytometry Resolves Extracellular Vesicle Heterogeneity and Reveals Selective Regulation of Biogenesis and Cargo Distribution. ACS Nano 2024; 18:10464-10484. [PMID: 38578701 DOI: 10.1021/acsnano.3c11561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/07/2024]
Abstract
Mammalian cells release a heterogeneous array of extracellular vesicles (EVs) that contribute to intercellular communication by means of the cargo that they carry. To resolve EV heterogeneity and determine if cargo is partitioned into select EV populations, we developed a method named "EV Fingerprinting" that discerns distinct vesicle populations using dimensional reduction of multiparametric data collected by quantitative single-EV flow cytometry. EV populations were found to be discernible by a combination of membrane order and EV size, both of which were obtained through multiparametric analysis of fluorescent features from the lipophilic dye Di-8-ANEPPS incorporated into the lipid bilayer. Molecular perturbation of EV secretion and biogenesis through respective ablation of the small GTPase Rab27a and overexpression of the EV-associated tetraspanin CD63 revealed distinct and selective alterations in EV populations, as well as cargo distribution. While Rab27a disproportionately affects all small EV populations with high membrane order, the overexpression of CD63 selectively increased the production of one small EV population of intermediate membrane order. Multiplexing experiments subsequently revealed that EV cargos have a distinct, nonrandom distribution with CD63 and CD81 selectively partitioning into smaller vs larger EVs, respectively. These studies not only present a method to probe EV biogenesis but also reveal how the selective partitioning of cargo contributes to EV heterogeneity.
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Affiliation(s)
- Ariana K von Lersner
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Fabiane Fernandes
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- Institute of Applied Biosciences and Chemistry, Hogeschool Arnhem en Nijmegen University of Applied Sciences, Nijmegen 6525 EM, Gelderland, Netherlands
| | - Patricia Midori Murobushi Ozawa
- The Center for EV Research, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Marques Jackson
- Department of Research Pathology, Genentech, San Francisco, California 94080, United States
| | - Matthieu Masureel
- Department of Structural Biology, Genentech, San Francisco, California 94080, United States
| | - Hoangdung Ho
- Department of Structural Biology, Genentech, San Francisco, California 94080, United States
| | - Sierra M Lima
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Tatyana Vagner
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California 90048, United States
| | - Bong Hwan Sung
- The Center for EV Research, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Mohamed Wehbe
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Kai Franze
- Department of Research Pathology, Genentech, San Francisco, California 94080, United States
- KNIME GmbH, Konstanz 78467, Germany
| | - Heather Pua
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- The Center for EV Research, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - John T Wilson
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- The Center for EV Research, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Jonathan M Irish
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Alissa M Weaver
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- The Center for EV Research, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, United States
| | - Dolores Di Vizio
- Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California 90048, United States
| | - Andries Zijlstra
- Program in Cancer Biology, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee 37232, United States
- The Center for EV Research, Vanderbilt University, Nashville, Tennessee 37232, United States
- Department of Research Pathology, Genentech, San Francisco, California 94080, United States
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Wang L, Liang Z, Guo Y, Habimana JDD, Ren Y, Amissah OB, Mukama O, Peng S, Ding X, Lv L, Li J, Chen M, Liu Z, Huang R, Zhang Y, Li Y, Li Z, Sun Y. STING agonist diABZI enhances the cytotoxicity of T cell towards cancer cells. Cell Death Dis 2024; 15:265. [PMID: 38615022 PMCID: PMC11016101 DOI: 10.1038/s41419-024-06638-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 03/28/2024] [Accepted: 04/02/2024] [Indexed: 04/15/2024]
Abstract
Antigen-specific T cell receptor-engineered T cell (TCR-T) based immunotherapy has proven to be an effective method to combat cancer. In recent years, cross-talk between the innate and adaptive immune systems may be requisite to optimize sustained antigen-specific immunity, and the stimulator of interferon genes (STING) is a promising therapeutic target for cancer immunotherapy. The level of expression or presentation of antigen in tumor cells affects the recognition and killing of tumor cells by TCR-T. This study aimed at investigating the potential of innate immune stimulation of T cells and engineered T cells to enhance immunotherapy for low-expression antigen cancer cells. We systematically investigated the function and mechanism of cross-talk between STING agonist diABZI and adaptive immune systems. We established NY-ESO-1 full knockout Mel526 cells for this research and found that diABZI activated STING media and TCR signaling pathways. In addition, the results of flow cytometry showed that antigens presentation from cancer cells induced by STING agonist diABZI also improved the affinity of TCR-T cells function against tumor cells in vitro and in vivo. Our findings revealed that diABZI enhanced the immunotherapy efficacy of TCR-T by activating STING media and TCR signaling pathways, improving interferon-γ expression, and increasing antigens presentation of tumor cells. This indicates that STING agonist could be used as a strategy to promote TCR-T cancer immunotherapy.
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Affiliation(s)
- Ling Wang
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Zhaoduan Liang
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health GuangDong Laboratory), Guangzhou, 510005, China
| | - Yunzhuo Guo
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Jean de Dieu Habimana
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Yuefei Ren
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Obed Boadi Amissah
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Omar Mukama
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
- Department of Biology, College of Science and Technology, University of Rwanda, Kigali, 3900, Rwanda
| | - Siqi Peng
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China
| | - Xuanyan Ding
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Linshuang Lv
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Junyi Li
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Min Chen
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Zhaoming Liu
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Rongqi Huang
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China
| | - Yinchao Zhang
- Department of Breast Surgery, Second Hospital of Jilin University, Changchun, 130022, China
| | - Yi Li
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong, China.
| | - Zhiyuan Li
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China.
- GZMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou, 510530, China.
| | - Yirong Sun
- CAS Key Laboratory of Regenerative Biology, Guangdong Provincial Key Laboratory of Stem Cell and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, 510530, China.
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Werin B, Hansson Wennersten W, Olsson R, Kołodziejczyk O, Andersson MN, Carlquist M, Johanson U. Evaluation of heterologous expression in Pichia pastoris of Pine Weevil TRPA1 by GFP and flow cytometry. Microb Cell Fact 2024; 23:110. [PMID: 38609906 PMCID: PMC11015645 DOI: 10.1186/s12934-024-02382-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/28/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND The wasabi receptor, also known as the Transient Receptor Potential Ankyrin 1 (TRPA1) ion channel, is a potential target for development of repellents for insects, like the pine weevil (Hylobius abietis) feeding on conifer seedlings and causing damage in forestry. Heterologous expression of TRPA1 from pine weevil in the yeast Pichia pastoris can potentially provide protein for structural and functional studies. Here we take advantage of the Green Fluorescent Protein (GFP) tag to examine the various steps of heterologous expression, to get more insight in clone selection, expression and isolation of the intact purified protein. RESULTS The sequence of HaTRPA1 is reported and GFP-tagged constructs were made of the full-length protein and a truncated version (Δ1-708 HaTRPA1), lacking the N-terminal ankyrin repeat domain. Clones were screened on GFP expression plates, induced in small liquid cultures and in fed-batch cultures, and evaluated by flow cytometry and fluorescence microscopy. The screening on plates successfully identifies low-expression clones, but fails to predict the ranking of the best performing clones in small-scale liquid cultures. The two constructs differ in their cellular localization. Δ1-708 HaTRPA1 is found in a ring at the perimeter of cell, whereas HaTRPA1 is forming highly fluorescent speckles in interior regions of the cell. The pattern is consistent in different clones of the same construct and persists in fed-batch culture. The expression of Δ1-708 HaTRPA1 decreases the viability more than HaTRPA1, and in fed-batch culture it is clear that intact cells first express Δ1-708 HaTRPA1 and then become damaged. Purifications show that both constructs suffer from degradation of the expressed protein, but especially the HaTRPA1 construct. CONCLUSIONS The GFP tag makes it possible to follow expression by flow cytometry and fluorescence microscopy. Analyses of localization, cell viability and expression show that the former two parameters are specific for each of the two evaluated constructs, whereas the relative expression of the constructs varies with the cultivation method. High expression is not all that matters, so taking damaged cells into account, something that may be linked to protein degradation, is important when picking the most suitable construct, clone, and expression scheme.
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Affiliation(s)
- Balder Werin
- Center for Molecular Protein Science, Department of Chemistry, Lund University, Lund, SE-221 00, Sweden
| | | | - Robin Olsson
- Center for Molecular Protein Science, Department of Chemistry, Lund University, Lund, SE-221 00, Sweden
| | - Oliwia Kołodziejczyk
- Center for Molecular Protein Science, Department of Chemistry, Lund University, Lund, SE-221 00, Sweden
| | | | - Magnus Carlquist
- Division of Applied Microbiology, Department of Chemistry, Lund University, Lund, SE-221 00, Sweden
| | - Urban Johanson
- Center for Molecular Protein Science, Department of Chemistry, Lund University, Lund, SE-221 00, Sweden.
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Buijs Y, Geers AU, Nita I, Strube ML, Bentzon-Tilia M. SecMet-FISH: labeling, visualization, and enumeration of secondary metabolite producing microorganisms. FEMS Microbiol Ecol 2024; 100:fiae038. [PMID: 38490742 PMCID: PMC11004939 DOI: 10.1093/femsec/fiae038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 02/23/2024] [Accepted: 03/14/2024] [Indexed: 03/17/2024] Open
Abstract
Our understanding of the role of secondary metabolites in microbial communities is challenged by intrinsic limitations of culturing bacteria under laboratory conditions and hence cultivation independent approaches are needed. Here, we present a protocol termed Secondary Metabolite FISH (SecMet-FISH), combining advantages of gene-targeted fluorescence in situ hybridization (geneFISH) with in-solution methods (in-solution FISH) to detect and quantify cells based on their genetic capacity to produce secondary metabolites. The approach capitalizes on the conserved nature of biosynthetic gene clusters (BGCs) encoding adenylation (AD) and ketosynthase (KS) domains, and thus selectively targets the genetic basis of non-ribosomal peptide and polyketide biosynthesis. The concept relies on the generation of amplicon pools using degenerate primers broadly targeting AD and KS domains followed by fluorescent labeling, detection, and quantification. Initially, we obtained AD and KS amplicons from Pseuodoalteromonas rubra, which allowed us to successfully label and visualize BGCs within P. rubra cells, demonstrating the feasibility of SecMet-FISH. Next, we adapted the protocol and optimized it for hybridization in both Gram-negative and Gram-positive bacterial cell suspensions, enabling high-throughput single cell analysis by flow cytometry. Ultimately, we used SecMet-FISH to successfully distinguish secondary metabolite producers from non-producers in a five-member synthetic community.
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Affiliation(s)
- Yannick Buijs
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Aileen Ute Geers
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Iuliana Nita
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Mikael Lenz Strube
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - Mikkel Bentzon-Tilia
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
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17
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Mackeh R, El Bsat Y, Elmi A, Bibawi H, Karim MY, Hassan A, Lo B. Novel Synonymous Variant in IL7R Causes Preferential Expression of the Soluble Isoform. J Clin Immunol 2024; 44:96. [PMID: 38587703 PMCID: PMC11001715 DOI: 10.1007/s10875-024-01688-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 03/08/2024] [Indexed: 04/09/2024]
Abstract
PURPOSE The interleukin-7 receptor (IL-7R) is primarily expressed on lymphoid cells and plays a crucial role in the development, proliferation, and survival of T cells. Autosomal recessive mutations that disrupt IL-7Rα chain expression give rise to a severe combined immunodeficiency (SCID), which is characterized by lymphopenia and a T-B+NK+ phenotype. The objective here was to diagnose two siblings displaying the T-B+NK+ SCID phenotype as initial clinical genetic testing did not detect any variants in known SCID genes. METHODS Whole genome sequencing (WGS) was utilized to identify potential variants causing the SCID phenotype. Splicing prediction tools were employed to assess the deleterious impact of the mutation. Polymerase Chain Reaction (PCR), Sanger sequencing, flow cytometry, and ELISA were then used to validate the pathogenicity of the detected mutation. RESULTS We discovered a novel homozygous synonymous mutation in the IL7R gene. Our functional studies indicate that this variant is pathogenic, causing exon 6, which encodes the transmembrane domain, to be preferentially spliced out. CONCLUSION In this study, we identified a novel rare synonymous mutation causing a loss of IL-7Rα expression at the cellular membrane. This case demonstrates the value of reanalyzing genetic data based on the clinical phenotype and highlights the significance of functional studies in determining the pathogenicity of genetic variants.
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Affiliation(s)
| | | | - Asha Elmi
- Research Branch, Sidra Medicine, Doha, Qatar
| | - Hani Bibawi
- Division of Hematopathology, Sidra Medicine, Doha, Qatar
| | - Mohammed Yousuf Karim
- Division of Hematopathology, Sidra Medicine, Doha, Qatar
- College of Medicine, Qatar University, Doha, Qatar
| | - Amel Hassan
- Pediatric Allergy and Immunology Department, Sidra Medicine, Ar-Rayyan, Qatar
| | - Bernice Lo
- Research Branch, Sidra Medicine, Doha, Qatar.
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar.
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Yadav S, Kumari R, Rangan P, Gaikwad AB. Variability in genome size of Trigonella foenum-graecum, Trigonella corniculata and Trigonella caerulea as estimated by flow cytometry indicates complex evolutionary history of fenugreek. Mol Biol Rep 2024; 51:489. [PMID: 38578370 DOI: 10.1007/s11033-024-09417-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/05/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND The determination of genome size is a fundamental step which provides a basis to initiate studies aimed at deciphering the genetic similarity of a species and to carry out other genomics based investigations. Fenugreek (Trigonella spp.) is an important spice crop which has numerous health promoting phytochemicals. Many species within this genus are known for their various health benefits owing to the presence of a wide diversity of important phytochemicals like diosgenin, trigonelline, fenugreekine, galactomannan, 4-hydroxy isoleucine, etc. It is a multipurpose crop being cultivated for food, animal feed and industrial purposes. Despite its importance, research on the genomics aspect of fenugreek remains scant. In the absence of sufficient genomic information, crop improvement in fenugreek is severely lagging. METHODS AND RESULTS Estimation of genome size of a species is the preliminary step for initiation of any genomic studies and therefore in the present study we have estimated the genome size for fenugreek. Here, we have determined the genome sizes of three different Trigonella spp. namely T. foenum-graecum, T. corniculata and T. caerulea through flow cytometry (FC). The 2 C DNA content values were found to be 6.05 pg (T. foenum-graecum), 1.83 pg (T. corniculata) and 1.96 pg (T. caerulea). The genome size of T. foenum-graecum is approximately three times the genome size of T. corniculata and T. caerulea. This variation in genome size of more than three-fold indicates the level of genetic divergence among the three species, though within the same genus. CONCLUSIONS The differences observed in the genome sizes of the three species provide conclusive evidence of their genetic divergence. Additionally, the information about the genome size would provide an impetus to the structural and functional genomics-based research in this crop.
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Affiliation(s)
- Sheel Yadav
- Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110 012, India
| | - Ratna Kumari
- Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110 012, India
| | - Parimalan Rangan
- Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110 012, India
| | - Ambika Baldev Gaikwad
- Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110 012, India.
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Benavente MCR, Hakeem ZA, Davis AR, Murray NB, Azadi P, Mace EM, Barb AW. Distinct CD16a features on human NK cells observed by flow cytometry correlate with increased ADCC. Sci Rep 2024; 14:7938. [PMID: 38575779 PMCID: PMC10995120 DOI: 10.1038/s41598-024-58541-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 04/01/2024] [Indexed: 04/06/2024] Open
Abstract
Natural killer (NK) cells destroy tissue that have been opsonized with antibodies. Strategies to generate or identify cells with increased potency are expected to enhance NK cell-based immunotherapies. We previously generated NK cells with increased antibody-dependent cell mediated cytotoxicity (ADCC) following treatment with kifunensine, an inhibitor targeting mannosidases early in the N-glycan processing pathway. Kifunensine treatment also increased the antibody-binding affinity of Fc γ receptor IIIa/CD16a. Here we demonstrate that inhibiting NK cell N-glycan processing increased ADCC. We reduced N-glycan processing with the CRIPSR-CAS9 knockdown of MGAT1, another early-stage N-glycan processing enzyme, and showed that these cells likewise increased antibody binding affinity and ADCC. These experiments led to the observation that NK cells with diminished N-glycan processing capability also revealed a clear phenotype in flow cytometry experiments using the B73.1 and 3G8 antibodies binding two distinct CD16a epitopes. We evaluated this "affinity profiling" approach using primary NK cells and identified a distinct shift and differentiated populations by flow cytometry that correlated with increased ADCC.
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Affiliation(s)
- Maria C Rodriguez Benavente
- Department of Biochemistry and Molecular Biology, University of Georgia, 120 E. Green St., 30602, Athens, GA, Georgia
| | - Zainab A Hakeem
- Department of Biochemistry and Molecular Biology, University of Georgia, 120 E. Green St., 30602, Athens, GA, Georgia
| | - Alexander R Davis
- Department of Biochemistry and Molecular Biology, University of Georgia, 120 E. Green St., 30602, Athens, GA, Georgia
| | - Nathan B Murray
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, Georgia
| | - Parastoo Azadi
- Department of Biochemistry and Molecular Biology, University of Georgia, 120 E. Green St., 30602, Athens, GA, Georgia
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, Georgia
| | - Emily M Mace
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY, USA
| | - Adam W Barb
- Department of Biochemistry and Molecular Biology, University of Georgia, 120 E. Green St., 30602, Athens, GA, Georgia.
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, Georgia.
- Department of Chemistry, University of Georgia, Athens, GA, Georgia.
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Pícková M, Kahounová Z, Radaszkiewicz T, Procházková J, Fedr R, Nosková M, Radaszkiewicz KA, Ovesná P, Bryja V, Souček K. Orthotopic model for the analysis of melanoma circulating tumor cells. Sci Rep 2024; 14:7827. [PMID: 38570556 PMCID: PMC10991390 DOI: 10.1038/s41598-024-58236-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 03/26/2024] [Indexed: 04/05/2024] Open
Abstract
Metastatic melanoma, a highly lethal form of skin cancer, presents significant clinical challenges due to limited therapeutic options and high metastatic capacity. Recent studies have demonstrated that cancer dissemination can occur earlier, before the diagnosis of the primary tumor. The progress in understanding the kinetics of cancer dissemination is limited by the lack of animal models that accurately mimic disease progression. We have established a xenograft model of human melanoma that spontaneously metastasizes to lymph nodes and lungs. This model allows precise monitoring of melanoma progression and is suitable for the quantitative and qualitative analysis of circulating tumor cells (CTCs). We have validated a flow cytometry-based protocol for CTCs enumeration and isolation. We could demonstrate that (i) CTCs were detectable in the bloodstream from the fourth week after tumor initiation, coinciding with the lymph node metastases appearance, (ii) excision of the primary tumor accelerated the formation of metastases in lymph nodes and lungs as early as one-week post-surgery, accompanied by the increased numbers of CTCs, and (iii) CTCs change their surface protein signature. In summary, we present a model of human melanoma that can be effectively utilized for future drug efficacy studies.
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Affiliation(s)
- Markéta Pícková
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Zuzana Kahounová
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | - Tomasz Radaszkiewicz
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jiřina Procházková
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
| | - Radek Fedr
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Michaela Nosková
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
- Centre for Inflammation Research, University of Edinburgh Institute for Regeneration and Repair, Edinburgh, Scotland
| | | | - Petra Ovesná
- Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Vítězslav Bryja
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Karel Souček
- Department of Cytokinetics, Institute of Biophysics of the Czech Academy of Sciences, Brno, Czech Republic.
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic.
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Kong GL, Nguyen TT, Rosales WK, Panikar AD, Cheney JHW, Lusardi TA, Yashar WM, Curtiss BM, Carratt SA, Braun TP, Maxson JE. CITEViz: interactively classify cell populations in CITE-Seq via a flow cytometry-like gating workflow using R-Shiny. BMC Bioinformatics 2024; 25:142. [PMID: 38566005 PMCID: PMC10988918 DOI: 10.1186/s12859-024-05762-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 03/26/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND The rapid advancement of new genomic sequencing technology has enabled the development of multi-omic single-cell sequencing assays. These assays profile multiple modalities in the same cell and can often yield new insights not revealed with a single modality. For example, Cellular Indexing of Transcriptomes and Epitopes by Sequencing (CITE-Seq) simultaneously profiles the RNA transcriptome and the surface protein expression. The surface protein markers in CITE-Seq can be used to identify cell populations similar to the iterative filtration process in flow cytometry, also called "gating", and is an essential step for downstream analyses and data interpretation. While several packages allow users to interactively gate cells, they often do not process multi-omic sequencing datasets and may require writing redundant code to specify gate boundaries. To streamline the gating process, we developed CITEViz which allows users to interactively gate cells in Seurat-processed CITE-Seq data. CITEViz can also visualize basic quality control (QC) metrics allowing for a rapid and holistic evaluation of CITE-Seq data. RESULTS We applied CITEViz to a peripheral blood mononuclear cell CITE-Seq dataset and gated for several major blood cell populations (CD14 monocytes, CD4 T cells, CD8 T cells, NK cells, B cells, and platelets) using canonical surface protein markers. The visualization features of CITEViz were used to investigate cellular heterogeneity in CD14 and CD16-expressing monocytes and to detect differential numbers of detected antibodies per patient donor. These results highlight the utility of CITEViz to enable the robust classification of single cell populations. CONCLUSIONS CITEViz is an R-Shiny app that standardizes the gating workflow in CITE-Seq data for efficient classification of cell populations. Its secondary function is to generate basic feature plots and QC figures specific to multi-omic data. The user interface and internal workflow of CITEViz uniquely work together to produce an organized workflow and sensible data structures for easy data retrieval. This package leverages the strengths of biologists and computational scientists to assess and analyze multi-omic single-cell datasets. In conclusion, CITEViz streamlines the flow cytometry gating workflow in CITE-Seq data to help facilitate novel hypothesis generation.
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Affiliation(s)
- Garth L Kong
- Division of Oncologic Sciences, Knight Cancer Institute, Oregon Health and Science University, 3181 SW Sam Jackson Pk. Rd., KR-HEM, Portland, OR, 97239, USA
| | - Thai T Nguyen
- Division of Oncologic Sciences, Knight Cancer Institute, Oregon Health and Science University, 3181 SW Sam Jackson Pk. Rd., KR-HEM, Portland, OR, 97239, USA
| | - Wesley K Rosales
- Earle A. Chiles Research Institute, Providence, Portland, OR, 97213, USA
| | - Anjali D Panikar
- Knight Campus Graduate Internship Program - Bioinformatics, University of Oregon, Eugene, OR, 97403, USA
| | - John H W Cheney
- Knight Campus Graduate Internship Program - Bioinformatics, University of Oregon, Eugene, OR, 97403, USA
| | - Theresa A Lusardi
- Cancer Early Detection Advanced Research, Oregon Health and Science University, Portland, OR, 97238, USA
| | - William M Yashar
- Division of Oncologic Sciences, Knight Cancer Institute, Oregon Health and Science University, 3181 SW Sam Jackson Pk. Rd., KR-HEM, Portland, OR, 97239, USA
- Department of Biomedical Engineering, Oregon Health and Science University, Portland, USA
| | - Brittany M Curtiss
- Division of Oncologic Sciences, Knight Cancer Institute, Oregon Health and Science University, 3181 SW Sam Jackson Pk. Rd., KR-HEM, Portland, OR, 97239, USA
| | - Sarah A Carratt
- Division of Oncologic Sciences, Knight Cancer Institute, Oregon Health and Science University, 3181 SW Sam Jackson Pk. Rd., KR-HEM, Portland, OR, 97239, USA
| | - Theodore P Braun
- Division of Oncologic Sciences, Knight Cancer Institute, Oregon Health and Science University, 3181 SW Sam Jackson Pk. Rd., KR-HEM, Portland, OR, 97239, USA.
- Division of Hematology and Medical Oncology, Oregon Health and Science University, Portland, USA.
| | - Julia E Maxson
- Division of Oncologic Sciences, Knight Cancer Institute, Oregon Health and Science University, 3181 SW Sam Jackson Pk. Rd., KR-HEM, Portland, OR, 97239, USA.
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Zhou J, Zhou R, Zhu Y, Deng S, Muhuitijiang B, Li C, Shi X, Zhang L, Tan W. Investigating the impact of regulatory B cells and regulatory B cell-related genes on bladder cancer progression and immunotherapeutic sensitivity. J Exp Clin Cancer Res 2024; 43:101. [PMID: 38566204 PMCID: PMC10985985 DOI: 10.1186/s13046-024-03017-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/18/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Regulatory B cells (Bregs), a specialized subset of B cells that modulate immune responses and maintain immune tolerance in malignant tumors, have not been extensively investigated in the context of bladder cancer (BLCA). This study aims to elucidate the roles of Bregs and Breg-related genes in BLCA. METHODS We assessed Breg infiltration levels in 34 pairs of BLCA and corresponding paracancerous tissues using immunohistochemical staining. We conducted transwell and wound healing assays to evaluate the impact of Bregs on the malignant phenotype of SW780 and T24 cells. Breg-related genes were identified through gene sets and transcriptional analysis. The TCGA-BLCA cohort served as the training set, while the IMvigor210 and 5 GEO cohorts were used as external validation sets. We employed LASSO regression and random forest for feature selection and developed a risk signature using Cox regression. Primary validation of the risk signature was performed through immunohistochemical staining and RT-qPCR experiments using the 34 local BLCA samples. Additionally, we employed transfection assays and flow cytometry to investigate Breg expansion ability and immunosuppressive functions. RESULTS Breg levels in BLCA tissues were significantly elevated compared to paracancerous tissues (P < 0.05) and positively correlated with tumor malignancy (P < 0.05). Co-incubation of SW780 and T24 cells with Bregs resulted in enhanced invasion and migration abilities (all P < 0.05). We identified 27 Breg-related genes, including CD96, OAS1, and CSH1, which were integrated into the risk signature. This signature demonstrated robust prognostic classification across the 6 cohorts (pooled HR = 2.25, 95% CI = 1.52-3.33). Moreover, the signature exhibited positive associations with advanced tumor stage (P < 0.001) and Breg infiltration ratios (P < 0.05) in the local samples. Furthermore, the signature successfully predicted immunotherapeutic sensitivity in three cohorts (all P < 0.05). Knockdown of CSH1 in B cells increased Breg phenotype and enhanced suppressive ability against CD8 + T cells (all P < 0.05). CONCLUSIONS Bregs play a pro-tumor role in the development of BLCA. The Breg-related gene signature established in this study holds great potential as a valuable tool for evaluating prognosis and predicting immunotherapeutic response in BLCA patients.
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Affiliation(s)
- Jiawei Zhou
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510080, China
- The First Clinical Medical College, Southern Medical University, Guangzhou, Guangdong, 510080, China
| | - Ranran Zhou
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510080, China
- The First Clinical Medical College, Southern Medical University, Guangzhou, Guangdong, 510080, China
| | - Yuanchao Zhu
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510080, China
- The First Clinical Medical College, Southern Medical University, Guangzhou, Guangdong, 510080, China
| | - Shikai Deng
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, No. 1023-1063 Shatai South Road, Baiyun District, Guangzhou, Guangdong, 510080, China
| | - Bahaerguli Muhuitijiang
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510080, China
- The First Clinical Medical College, Southern Medical University, Guangzhou, Guangdong, 510080, China
| | - Chengyao Li
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, No. 1023-1063 Shatai South Road, Baiyun District, Guangzhou, Guangdong, 510080, China
| | - Xiaojun Shi
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510080, China
- The First Clinical Medical College, Southern Medical University, Guangzhou, Guangdong, 510080, China
| | - Ling Zhang
- Department of Transfusion Medicine, School of Laboratory Medicine and Biotechnology, Southern Medical University, No. 1023-1063 Shatai South Road, Baiyun District, Guangzhou, Guangdong, 510080, China.
| | - Wanlong Tan
- Department of Urology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, 510080, China.
- The First Clinical Medical College, Southern Medical University, Guangzhou, Guangdong, 510080, China.
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Riganati M, Zotta F, Candino A, Conversano E, Gargiulo A, Scarsella M, Lo Russo A, Bettini C, Emma F, Vivarelli M, Colucci M. A novel flow cytometry panel to identify prognostic markers for steroid-sensitive forms of idiopathic nephrotic syndrome in childhood. Front Immunol 2024; 15:1379924. [PMID: 38629076 PMCID: PMC11018947 DOI: 10.3389/fimmu.2024.1379924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/14/2024] [Indexed: 04/19/2024] Open
Abstract
Introduction The clinical evolution of steroid-sensitive forms of pediatric idiopathic nephrotic syndrome (INS) is highly heterogeneous following the standard treatment with prednisone. To date, no prognostic marker has been identified to predict the severity of the disease course starting from the first episode. Methods In this monocentric prospective cohort study we set up a reproducible and standardized flow cytometry panel using two sample tubes (one for B-cell and one for T-cell subsets) to extensively characterized the lymphocyte repertoire of INS pediatric patients. A total of 44 children with INS at disease onset were enrolled, sampled before and 3 months after standard induction therapy with prednisone and followed for 12 months to correctly classify their disease based on relapses. Age-matched controls with non immune-mediated renal diseases or with urological disorders were also enrolled. Demographical, clinical, laboratory and immunosuppressive treatment data were registered. Results We found that children with INS at disease onset had significantly higher circulating levels of total CD19+ and specific B-cell subsets (transitional, mature-naïve, plasmablasts/plasmacells, CD19+CD27+, unswitched, switched and atypical memory B cells) and reduced circulating levels of Tregs, when compared to age-matched controls. Prednisone therapy restored most B- and T-cell alterations. When patients were subdivided based on disease relapse, relapsing patients had significantly more transitional, CD19+CD27+ memory and in particular unswitched memory B cells at disease onset, which were predictive of a higher risk of relapse in steroid-sensitive patients by logistic regression analysis, irrespective of age. In accordance, B-cell dysregulations resulted mainly associated with steroid-dependence when patients were stratified in different disease severity forms. Of note, Treg levels were reduced independently from the disease subgroup and were not completely normalized by prednisone treatment. Conclusion We have set up a novel, reproducible, disease-specific flow cytometry panel that allows a comprehensive characterization of circulating lymphocytes. We found that, at disease onset, relapsing patients had significantly more transitional, CD19+CD27+ memory and unswitched memory B cells and those who are at higher risk of relapse had increased circulating levels of unswitched memory B cells, independently of age. This approach can allow prediction of clinical evolution, monitoring of immunosuppression and tailored treatment in different forms of INS.
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Affiliation(s)
- Martina Riganati
- Laboratory of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
| | - Federica Zotta
- Division of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
| | - Annalisa Candino
- Division of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
| | - Ester Conversano
- Division of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
| | - Antonio Gargiulo
- Division of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
| | - Marco Scarsella
- Research Laboratories, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
| | - Anna Lo Russo
- Research Laboratories, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
| | - Chiara Bettini
- Division of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
| | - Francesco Emma
- Laboratory of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
- Division of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
| | - Marina Vivarelli
- Laboratory of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
- Division of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
| | - Manuela Colucci
- Laboratory of Nephrology, Bambino Gesù Children’s Hospital Scientific Institute for Research and Health Care (IRCCS), Rome, Italy
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Mermans F, De Baets H, García-Timermans C, Teughels W, Boon N. Unlocking the mechanism of action: a cost-effective flow cytometry approach for accelerating antimicrobial drug development. Microbiol Spectr 2024; 12:e0393123. [PMID: 38483479 DOI: 10.1128/spectrum.03931-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 03/04/2024] [Indexed: 04/06/2024] Open
Abstract
Antimicrobial resistance is one of the greatest challenges to global health. While the development of new antimicrobials can combat resistance, low profitability reduces the number of new compounds brought to market. Elucidating the mechanism of action is crucial for developing new antimicrobials. This can become expensive as there are no universally applicable pipelines. Phenotypic heterogeneity of microbial populations resulting from antimicrobial treatment can be captured through flow cytometric fingerprinting. Since antimicrobials are classified into limited groups, the mechanism of action of known compounds can be used for predictive modeling. We demonstrate a cost-effective flow cytometry approach for determining the mechanism of action of new compounds. Cultures of Actinomyces viscosus and Fusobacterium nucleatum were treated with different antimicrobials and measured by flow cytometry. A Gaussian mixture mask was applied over the data to construct phenotypic fingerprints. Fingerprints were used to assess statistical differences between mechanism of action groups and to train random forest classifiers. Classifiers were then used to predict the mechanism of action of cephalothin. Statistical differences were found among the different mechanisms of action groups. Pairwise comparison showed statistical differences for 35 out of 45 pairs for A. viscosus and for 32 out of 45 pairs for F. nucleatum after 3.5 h of treatment. The best-performing random forest classifier yielded a Matthews correlation coefficient of 0.92 and the mechanism of action of cephalothin could be successfully predicted. These findings suggest that flow cytometry can be a cheap and fast alternative for determining the mechanism of action of new antimicrobials.IMPORTANCEIn the context of the emerging threat of antimicrobial resistance, the development of novel antimicrobials is a commonly employed strategy to combat resistance. Elucidating the mechanism of action of novel compounds is crucial in this development but can become expensive, as no universally applicable pipelines currently exist. We present a novel flow cytometry-based approach capable of determining the mechanism of action swiftly and cost-effectively. The workflow aims to accelerate drug discovery and could help facilitate a more targeted approach for antimicrobial treatment of patients.
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Affiliation(s)
- Fabian Mermans
- Center for Microbial Ecology and Technology, Faculty of Bioscience Engineering, Ghent University, Gent, Belgium
- Department of Oral Health Sciences, KU Leuven & Dentistry (Periodontology), University Hospitals Leuven, Leuven, Belgium
| | - Hanna De Baets
- Center for Microbial Ecology and Technology, Faculty of Bioscience Engineering, Ghent University, Gent, Belgium
| | - Cristina García-Timermans
- Center for Microbial Ecology and Technology, Faculty of Bioscience Engineering, Ghent University, Gent, Belgium
| | - Wim Teughels
- Department of Oral Health Sciences, KU Leuven & Dentistry (Periodontology), University Hospitals Leuven, Leuven, Belgium
| | - Nico Boon
- Center for Microbial Ecology and Technology, Faculty of Bioscience Engineering, Ghent University, Gent, Belgium
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Somajo S, Nilsson F, Ekelund O, Unemo M. Detection of antimicrobial resistance in <5 h in Neisseria gonorrhoeae isolates using flow cytometry-proof of concept for seven clinically relevant antimicrobials. J Antimicrob Chemother 2024; 79:815-819. [PMID: 38334417 PMCID: PMC10984928 DOI: 10.1093/jac/dkae034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 01/23/2024] [Indexed: 02/10/2024] Open
Abstract
INTRODUCTION Antimicrobial resistance in Neisseria gonorrhoeae compromises gonorrhoea treatment and rapid antimicrobial susceptibility testing (AST) would be valuable. We have developed a rapid and accurate flow cytometry method (FCM) for AST of gonococci. METHODS The 2016 WHO gonococcal reference strains, and WHO Q, R and S (n = 17) were tested against seven clinically relevant antibiotics (ceftriaxone, cefixime, azithromycin, spectinomycin, ciprofloxacin, tetracycline and gentamicin). After 4.5 h incubation of inoculated broth, the fluorescent dye Syto™ 9 was added, followed by FCM analysis. After gating, the relative remaining population of gonococci, compared with unexposed growth control samples, was plotted against antimicrobial concentration, followed by non-linear curve regression analysis. Furthermore, the response at one single concentration/tested antibiotic was evaluated with the intention to use as a screening test for detection of resistant gonococci. RESULTS A dose-dependent response was seen in susceptible isolates for all tested antimicrobials. There was a clear separation between susceptible/WT and resistant/non-WT isolates for ceftriaxone, cefixime, spectinomycin, ciprofloxacin and tetracycline. In contrast, for azithromycin, only high-level-resistant isolates were distinguished, while resistant isolates with MICs of 4 mg/L were indistinguishable from WT (MIC ≤ 1 mg/L) isolates. For gentamicin, all tested 17 isolates were WT and FCM analysis resulted in uniform dose-response curves. Using a single antibiotic concentration and a 50% remaining cell population cut-off, the overall sensitivity and specificity for resistance detection were 93% and 99%, respectively. CONCLUSIONS By providing results in <5 h for gonococcal isolates, FCM-based AST can become a rapid screening method for antimicrobial resistance or antimicrobial susceptibility in gonococci.
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Affiliation(s)
- Sofia Somajo
- Department of Chemistry and Biomedical Sciences, Linnaeus University, Kalmar, Sweden
| | - Frida Nilsson
- Department of Clinical Microbiology, Region Kronoberg, Växjö/Karlskrona, Sweden
| | - Oskar Ekelund
- Department of Clinical Microbiology, Region Kronoberg, Växjö/Karlskrona, Sweden
| | - Magnus Unemo
- Faculty of Medicine and Health, WHO Collaborating Centre for Gonorrhoea and Other STIs, Örebro University, Örebro, Sweden
- Institute for Global Health, University College London, London, UK
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Solomonova E, Shoman N, Akimov A, Rylkova O, Meger Y. Application of confocal microscopy and flow cytometry to identify physiological responses of Prorocentrum micans to the herbicide glyphosate. Mar Environ Res 2024; 196:106417. [PMID: 38394976 DOI: 10.1016/j.marenvres.2024.106417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/25/2024] [Accepted: 02/19/2024] [Indexed: 02/25/2024]
Abstract
The physiological response of the dinoflagellate P. micans to the effect of the herbicide glyphosate at a concentration of 25-200 μg L-1 was evaluated. It has been shown that P. micans is able to grow due to the consumption of dissolved organic phosphorus formed as a result of the mineralization of glyphosate by bacteria. The addition of glyphosate to the medium inhibits the photosynthetic activity of cells; there is a pronounced inhibition of the relative electron transfer rate along the electron transport chain and the maximum quantum efficiency of the use of light energy. Morphological and ultrastructural changes in P. micans cells were evaluated at sublethal (150 μg L-1) and lethal (200 μg L-1) glyphosate concentrations. It has been shown that at a herbicide concentration of 150 μg L-1, the first signs of apoptosis appear in most P. micans cells: a decrease in lateral light scattering, cytoplasmic retraction, partial destruction of cytoplasmic organelles, a change in the morphology of nuclei, mitochondria, a change in the potential of mitochondrial membranes, and a decrease in the autofluorescence of chlorophyll in cells. At a glyphosate concentration of 200 μg L-1, P. micans showed signs of a late stage of apoptosis: violation of the integrity of intracellular organelles and chromatin organization, fragmentation of nuclei, condensation of cytoplasm, disorganization of chloroplasts in the cells, and the release of cell contents beyond the cell membrane. The effectiveness of using flow cytometry and laser scanning confocal microscopy methods for identifying signs and stages of cell apoptosis when exposed to glyphosate is discussed.
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Affiliation(s)
- Ekaterina Solomonova
- A.O. Kovalevsky Institute of Biology of the Southern Seas of the Russian Academy of Sciences, 2, Nahimov Avе., Sevastopol, Russian Federation.
| | - Natalia Shoman
- A.O. Kovalevsky Institute of Biology of the Southern Seas of the Russian Academy of Sciences, 2, Nahimov Avе., Sevastopol, Russian Federation
| | - Arkady Akimov
- A.O. Kovalevsky Institute of Biology of the Southern Seas of the Russian Academy of Sciences, 2, Nahimov Avе., Sevastopol, Russian Federation
| | - Olga Rylkova
- A.O. Kovalevsky Institute of Biology of the Southern Seas of the Russian Academy of Sciences, 2, Nahimov Avе., Sevastopol, Russian Federation
| | - Yakov Meger
- Sevastopol State University, 299053, Universitetskaya Street, 33, Sevastopol, Russian Federation
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Venglar O, Kapustova V, Anilkumar Sithara A, Zihala D, Muronova L, Sevcikova T, Vrana J, Vdovin A, Radocha J, Krhovska P, Hrdinka M, Turjap M, Popkova T, Chyra Z, Broskevicova L, Simicek M, Koristek Z, Hajek R, Jelinek T. Insight into the mechanism of CD34 + cell mobilisation impairment in multiple myeloma patients treated with anti-CD38 therapy. Br J Haematol 2024; 204:1439-1449. [PMID: 37807708 DOI: 10.1111/bjh.19141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/22/2023] [Accepted: 09/25/2023] [Indexed: 10/10/2023]
Abstract
Induction therapy followed by CD34+ cell mobilisation and autologous transplantation represents standard of care for multiple myeloma (MM). However, the anti-CD38 monoclonal antibodies daratumumab and isatuximab have been associated with mobilisation impairment, yet the mechanism remains unclear. In this study, we investigated the effect of three different regimens (dara-VCd, isa-KRd and VTd) on CD34+ cells using flow cytometry and transcriptomics. Decreased CD34+ cell peak concentration and yields, longer collection and delayed engraftment were reproduced after dara-VCd/isa-KRd versus VTd induction in 34 patients in total. Using flow cytometry, we detected major changes in the proportion of apheresis product and bone marrow CD34+ subsets in patients treated with regimens containing anti-CD38 therapy; however, without any decrease in CD38high B-lymphoid progenitors in both materials. RNA-seq of mobilised CD34+ cells from 21 patients showed that adhesion genes are overexpressed in CD34+ cells after dara-VCd/isa-KRd and JCAD, NRP2, MDK, ITGA3 and CLEC3B were identified as potential target genes. Finally, direct in vitro effect of isatuximab in upregulating JCAD and CLEC3B was confirmed by quantitative PCR. These findings suggest that upregulated adhesion-related interactions, rather than killing of CD34+ cells by effector mechanisms, could be leading causes of decreased mobilisation efficacy in MM patients treated with anti-CD38 therapy.
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Affiliation(s)
- Ondrej Venglar
- Faculty of Science, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Veronika Kapustova
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Anjana Anilkumar Sithara
- Faculty of Science, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - David Zihala
- Faculty of Science, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Ludmila Muronova
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Tereza Sevcikova
- Faculty of Science, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Jan Vrana
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Alexander Vdovin
- Faculty of Science, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Jakub Radocha
- 4th Department of Internal Medicine - Hematology, Charles University and University Hospital in Hradec Kralove, Hradec Kralove, Czech Republic
| | - Petra Krhovska
- Department of Hematooncology, Faculty of Medicine and Dentistry, Palacky University and University Hospital Olomouc, Olomouc, Czech Republic
| | - Matous Hrdinka
- Faculty of Science, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Michal Turjap
- Clinical Trials Section of Pharmacy, University Hospital Ostrava, Ostrava, Czech Republic
| | - Tereza Popkova
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Zuzana Chyra
- Faculty of Science, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Lucie Broskevicova
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Michal Simicek
- Faculty of Science, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Zdenek Koristek
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Roman Hajek
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
| | - Tomas Jelinek
- Department of Hematooncology, Faculty of Medicine, University of Ostrava, Ostrava, Czech Republic
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czech Republic
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Dexter T, Taiwo T, Dearden C, Chan LY, Taussig D, El-Sharkawi D, Dunlop A, Iyengar S. Correlation of T-cell receptor constant beta-chain 1 by flow cytometry with molecular T-cell receptor clonality for the investigation of T-cell lymphoproliferation. Br J Haematol 2024; 204:1554-1556. [PMID: 38407416 DOI: 10.1111/bjh.19299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 02/27/2024]
Affiliation(s)
- Tania Dexter
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Tosin Taiwo
- The Centre for Molecular Pathology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Claire Dearden
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Li Yuan Chan
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - David Taussig
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Dima El-Sharkawi
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Alan Dunlop
- The Centre for Molecular Pathology, The Royal Marsden NHS Foundation Trust, Sutton, UK
| | - Sunil Iyengar
- Department of Haemato-Oncology, The Royal Marsden NHS Foundation Trust, Sutton, UK
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Gratio V, Dayot S, Benadda S, Nicole P, Saveanu L, Voisin T, Couvineau A. Imaging flow cytometry of tumoroids: A new method for studying GPCR expression. Cytometry A 2024; 105:276-287. [PMID: 38017661 DOI: 10.1002/cyto.a.24809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/11/2023] [Accepted: 11/13/2023] [Indexed: 11/30/2023]
Abstract
Fluorescence confocal microscopy is commonly used to analyze the regulation membrane proteins expression such as G protein-coupled receptors (GPCRs). With this approach, the internal movement of GPCRs within the cell can be observed with a high degree of resolution. However, these microscopy techniques led to complex and time-consuming analysis and did not allow a large population of events to be sampled. A recent approach termed imaging flow cytometry (IFC), which combines flow cytometry and fluorescence microscopy, had two main advantages to study the regulation of GPCRs expression such as orexins receptors (OXRs): the ability (1) to analyze large numbers of cells and; (2) to visualize cell integrity and fluorescent markers localization. Here, we compare these two technologies using the orexin A (OxA) ligand coupled to rhodamine (OxA-rho) to investigate anti-tumoral OX1R expression in human digestive cancers. IFC has been adapted for cancer epithelial adherent cells and also to 3D cell culture tumoroids which partially mimic tumoral structures. In the absence of specific antibody, expression of OX1R is examined in the presence of OxA-rho. 2D-culture of colon cancer cells HT-29 exhibits a maximum level of OX1R internalization induced by OxA with 19% ± 3% colocalizing to early endosomes. In 3D-culture of HT-29 cells, internalization of OX1R/OxA-rho reached its maximum at 60 min, with 30.7% ± 6.4% of OX1R colocalizing with early endosomes. This is the first application of IFC to the analysis of the expression of a native GPCR, OX1R, in both 2D and 3D cultures of adherent cancer cells.
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Affiliation(s)
- V Gratio
- INSERM UMR1149/Inflammation Research Center (CRI), Université Paris Cité, Team "From Inflammation to Cancer in Digestive Diseases (INDiD)", DHU UNITY, Paris, France
- INSERM UMR1149/Inflammation Research Center (CRI), Université Paris Cité, Flow Cytometry Platform (CytoCRI), DHU UNITY, Paris, France
| | - S Dayot
- INSERM UMR1149/Inflammation Research Center (CRI), Université Paris Cité, Team "From Inflammation to Cancer in Digestive Diseases (INDiD)", DHU UNITY, Paris, France
| | - S Benadda
- INSERM UMR1149/Inflammation Research Center (CRI), Université Paris Cité, Photonic Imaging Platform (IMA'CRI), DHU UNITY, Paris, France
| | - P Nicole
- INSERM UMR1149/Inflammation Research Center (CRI), Université Paris Cité, Team "From Inflammation to Cancer in Digestive Diseases (INDiD)", DHU UNITY, Paris, France
| | - L Saveanu
- INSERM UMR1149/Inflammation Research Center (CRI), Université Paris Cité, Team "Antigen Presentation by Dendritic Cells to T cells (APreT)", DHU UNITY, Paris, France
| | - T Voisin
- INSERM UMR1149/Inflammation Research Center (CRI), Université Paris Cité, Team "From Inflammation to Cancer in Digestive Diseases (INDiD)", DHU UNITY, Paris, France
| | - A Couvineau
- INSERM UMR1149/Inflammation Research Center (CRI), Université Paris Cité, Team "From Inflammation to Cancer in Digestive Diseases (INDiD)", DHU UNITY, Paris, France
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30
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Derman BA, Fonseca R. Measurable Residual Disease and Decision-Making in Multiple Myeloma. Hematol Oncol Clin North Am 2024; 38:477-495. [PMID: 38184470 DOI: 10.1016/j.hoc.2023.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2024]
Abstract
Measurable (minimal) residual disease (MRD) has already proven to be one of the most important prognostic factors in multiple myeloma (MM). Each improvement in the depth of MRD testing has led to superior discrimination of outcomes, and sustained MRD negativity seems to be paramount to durable responses. Peripheral blood assays to assess for MRD are still under investigation but hold promise as complementary tools to bone marrow MRD assays such as next-generation sequencing and flow cytometry. Herein, the authors explore the evidence and potential benefits and drawbacks of MRD-adapted clinical decision-making in MM.
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Affiliation(s)
- Benjamin A Derman
- Section of Hematology/Oncology, University of Chicago, 5841 South Maryland Avenue, Chicago, IL 60637, USA.
| | - Rafael Fonseca
- Division of Hematology and Medical Oncology, Mayo Clinic in Arizona, 13400 East Shea Boulevard, MCCRB 3-001, Phoenix, AZ 85259, USA
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31
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Anasiz Y, Ozgul RK, Uckan-Cetinkaya D. Turning Trash Into Treasure: A Simple Protocol for Human Mesenchymal Stromal Cell Isolation From Used Bone Marrow Collection Kits. Curr Protoc 2024; 4:e1032. [PMID: 38606955 DOI: 10.1002/cpz1.1032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
The therapeutic potential of mesenchymal stromal cells (MSCs) has been extensively investigated in both preclinical and clinical settings. Recent years have witnessed the emergence of numerous isolation protocols and culture techniques, ranging from the selection of subpopulations to preserve stemness to preconditioning strategies aimed at enhancing therapeutic efficacy, tailored to the specific tissue source. In this protocol, we present a straightforward and cost-effective method for isolating human MSCs (hMSCs) from discarded bone marrow collection kits (comprising bag and filter systems) originally intended for removing impurities and unwanted cellular debris from the collected bone marrow aspirate, ensuring the purity of the stem cell population during stem cell transplantation. Utilizing basic laboratory equipment, we demonstrate the isolation of hMSCs, highlighting the expression of specific surface antigens, and multilineage differentiation into adipogenic, osteogenic, and chondrogenic lineages in vitro. This sustainable and resource-efficient approach not only contributes to reducing medical waste but also holds promise for advancing regenerative medicine applications. © 2024 Wiley Periodicals LLC. Basic Protocol 1: Isolation of human mesenchymal stromal cells from bone marrow collection kits Basic Protocol 2: Culture of human mesenchymal stromal cells Basic Protocol 3: Characterization of human mesenchymal stromal cells with flow cytometry analysis Basic Protocol 4: Characterization of human mesenchymal stromal cells with multilineage differentiation under in vitro conditions.
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Affiliation(s)
- Yagiz Anasiz
- Department of Stem Cell Sciences, Hacettepe University, Ankara, Turkey
- Center for Stem Cell Research and Development (PEDI-STEM), Hacettepe University, Ankara, Turkey
- Current affiliation: Department of Medicine, University of Washington, Seattle, Washington
| | - Riza Koksal Ozgul
- Department of Stem Cell Sciences, Hacettepe University, Ankara, Turkey
- Center for Stem Cell Research and Development (PEDI-STEM), Hacettepe University, Ankara, Turkey
- Department of Pediatric Metabolism, Hacettepe University, Ankara, Turkey
| | - Duygu Uckan-Cetinkaya
- Department of Stem Cell Sciences, Hacettepe University, Ankara, Turkey
- Center for Stem Cell Research and Development (PEDI-STEM), Hacettepe University, Ankara, Turkey
- Hematology Unit, Department of Child Health and Diseases, Hacettepe University, Ankara, Turkey
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32
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Lucero J, Alhumaid M, Novitzky-Basso I, Capo-Chichi JM, Stockley T, Gupta V, Bankar A, Chan S, Schuh AC, Minden M, Mattsson J, Kumar R, Sibai H, Tierens A, Kim DDH. Flow cytometry-based measurable residual disease (MRD) analysis identifies AML patients who may benefit from allogeneic hematopoietic stem cell transplantation. Ann Hematol 2024; 103:1187-1196. [PMID: 38291275 DOI: 10.1007/s00277-024-05639-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 01/21/2024] [Indexed: 02/01/2024]
Abstract
Measurable residual disease (MRD) monitoring independently predicts long-term outcomes in patients with acute myeloid leukemia (AML). Of the various modalities available, multiparameter flow cytometry-based MRD analysis is widely used and relevant for patients without molecular targets. In the transplant (HCT) setting, the presence of MRD pre-HCT is associated with adverse outcomes. MRD-negative remission status pre-HCT was also associated with longer overall (OS) and progression-free survival and a lower risk of relapse. We hypothesize that the combination of disease risk and MRD at the time of first complete remission (CR1) could identify patients according to the benefit gained from HCT, especially for intermediate-risk patients. We performed a retrospective analysis comparing the outcomes of HCT versus non-HCT therapies based on MRD status in AML patients who achieved CR1. Time-dependent analysis was applied considering time-to-HCT as a time-dependent covariate and compared HCT versus non-HCT outcomes according to MRD status at CR1. Among 336 patients assessed at CR1, 35.1% were MRD positive (MRDpos) post-induction. MRDpos patients benefitted from HCT with improved OS and relapse-free survival (RFS), while no benefit was observed in MRDneg patients. In adverse-risk patients, HCT improved OS (HR for OS 0.55; p = 0.05). In intermediate-risk patients, HCT benefit was not significant for OS and RFS. Intermediate-risk MRDpos patients were found to have benefit from HCT with improved OS (HR 0.45, p = 0.04), RFS (HR 0.46, p = 0.02), and CIR (HR 0.41, p = 0.02). Our data underscore the benefit of HCT in adverse risk and MRDpos intermediate-risk AML patients.
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Affiliation(s)
- Josephine Lucero
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada.
| | | | - Igor Novitzky-Basso
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Jose-Mario Capo-Chichi
- Advanced Molecular Diagnostics Laboratory, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Tracy Stockley
- Division of Clinical Laboratory Genetics, Laboratory Medicine Program, University Health Network, Toronto, ON, Canada
| | - Vikas Gupta
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Aniket Bankar
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Steven Chan
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Andre C Schuh
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Mark Minden
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Jonas Mattsson
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Rajat Kumar
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Hassan Sibai
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Anne Tierens
- Division of Hematology and Transfusion Medicine, Laboratory Medicine Program, University Health Network, Toronto, ON, Canada
| | - Dennis D H Kim
- Division of Medical Oncology & Hematology, Princess Margaret Cancer Centre, Toronto, ON, Canada.
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Jyoti TP, Chandel S, Singh R. Unveiling the epigenetic landscape of plants using flow cytometry approach. Cytometry A 2024; 105:231-241. [PMID: 38437027 DOI: 10.1002/cyto.a.24834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 01/12/2024] [Accepted: 02/22/2024] [Indexed: 03/06/2024]
Abstract
Plants are sessile creatures that have to adapt constantly changing environmental circumstances. Plants are subjected to a range of abiotic stressors as a result of unpredictable climate change. Understanding how stress-responsive genes are regulated can help us better understand how plants can adapt to changing environmental conditions. Epigenetic markers that dynamically change in response to stimuli, such as DNA methylation and histone modifications are known to regulate gene expression. Individual cells or particles' physical and/or chemical properties can be measured using the method known as flow cytometry. It may therefore be used to evaluate changes in DNA methylation, histone modifications, and other epigenetic markers, making it a potent tool for researching epigenetics in plants. We explore the use of flow cytometry as a technique for examining epigenetic traits in this thorough discussion. The separation of cell nuclei and their subsequent labeling with fluorescent antibodies, offering information on the epigenetic mechanisms in plants when utilizing flow cytometry. We also go through the use of high-throughput data analysis methods to unravel the complex epigenetic processes occurring inside plant systems.
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Affiliation(s)
- Thakur Prava Jyoti
- Department of Pharmacognosy, ISF College of Pharmacy, Moga, Punjab, India
| | - Shivani Chandel
- Department of Pharmacognosy, ISF College of Pharmacy, Moga, Punjab, India
| | - Rajveer Singh
- Department of Pharmacognosy, ISF College of Pharmacy, Moga, Punjab, India
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Rewthamrongsris P, Phothichailert S, Chokechanachaisakul U, Kornsuthisopon C, Osathanon T. Simvastatin Induces Apoptosis but Attenuates Migration in SCAPs. Int Dent J 2024; 74:352-358. [PMID: 38220513 PMCID: PMC10988248 DOI: 10.1016/j.identj.2023.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/15/2023] [Accepted: 10/20/2023] [Indexed: 01/16/2024] Open
Abstract
AIM Simvastatin has emerged as having a promising role in controlling stem cell behaviours. This study aimed to evaluate the effects of simvastatin on the viability, growth, and migration of stem cells isolated from apical papillae (SCAPs) in vitro. METHODS SCAPs were isolated and characterised. The viability and proliferation were assessed using live/dead and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assays, respectively. Cell migration was evaluated using scratch assays. Cell cycle progression and apoptosis were examined using flow cytometry analysis. RESULTS Simvastatin at a concentration of 100 to 1000 nM did not exhibit cytotoxicity. Simvastatin reduced cell numbers at days 3 and 7. In addition, simvastatin markedly decreased colony formation in both colony number and cell density in a dose-dependent manner. An increase in apoptosis was observed at day 7. There was statistically significant increased in sub G0 population. An in vitro cell migration was attenuated in a dose-dependent manner. CONCLUSION Simvastatin affects SCAPs' viability, proliferation, and cell migration. The reduction of cell viability at day 7 could be due to apoptotic induction.
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Affiliation(s)
- Paak Rewthamrongsris
- Center of Excellence for Dental Stem Cell Biology and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Suphalak Phothichailert
- Center of Excellence for Dental Stem Cell Biology and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | | | - Chatvadee Kornsuthisopon
- Center of Excellence for Dental Stem Cell Biology and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanaphum Osathanon
- Center of Excellence for Dental Stem Cell Biology and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
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35
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Liao S, Gao H. Severe Infection Mimicking AML due to Bone Marrow Suppression: a Diagnostic Challenge. Clin Lab 2024; 70. [PMID: 38623673 DOI: 10.7754/clin.lab.2023.231002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
BACKGROUND Infection may lead to agranulocytosis due to bone marrow suppression. However, a rare case with infection presented with morphological features of acute myeloid leukemia (AML). METHODS We report a case of extreme agranulocytosis due to severe infection mimicking acute myeloid leukemia. The case was definitively diagnosed by subsequent morphology, flow cytometry, and bone marrow biopsy, and subsequent successful anti-infective treatment confirmed the diagnosis. CONCLUSIONS To date, no case of a patient diagnosed with severe infection mimicking AML has been reported. The case emphasizes the importance of an integrated diagnostic work-up, especially careful clinical observation and differential diagnosis.
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36
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Nemoto R, Usui Y, Komatsu H, Tsubota K, Sugawara R, Nagao T, Goto H. Immunophenotypic profiles in chalazion and pyogenic granuloma associated with chalazion. Graefes Arch Clin Exp Ophthalmol 2024; 262:1329-1335. [PMID: 37934292 DOI: 10.1007/s00417-023-06304-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/25/2023] [Accepted: 10/23/2023] [Indexed: 11/08/2023] Open
Abstract
PURPOSE To evaluate immunophenotypic profiles of infiltrating cells in surgically excised tissues of chalazion and pyogenic granuloma associated with chalazion. METHODS Eighty-two surgical specimens from 74 consecutive patients newly diagnosed with chalazion or chalazion-associated pyogenic granuloma at Tokyo Medical University Hospital between 2016 and 2022 were studied. Sixty specimens were chalazion lesions and 22 specimens were pyogenic granuloma lesions (from 15 men and 7 women, mean age 36.6 ± 14.4 years). All patients were immunocompetent Asian Japanese adults. Specimens were analyzed by immunohistochemistry and flow cytometry. Flow cytometry was performed using the following antibodies: CD3, CD4, CD8, CD11b, CD11c, CD16, CD19, CD20, CD23, CD25, CD34, CD44, CD56, CD69, and CD138. RESULTS In flow cytometric analysis, the proportion of cells expressing the T cell marker CD3 was significantly higher compared with other immune cells expressing specific markers (p < 0.0001), and the proportion of CD4-positive T cells was significantly higher than that of CD8-positive T cells (p < 0.0001), in both chalazion and pyogenic granuloma specimens. The chalazion and pyogenic granuloma lesions shared similar immunophenotypic profile characterized by predominant T cell infiltration, and CD4 T cells dominating over CD8 cells. The pattern of expression of CD4 and CD8 in the specimens was confirmed by immunohistochemistry. CONCLUSION The present study demonstrates immunophenotypic features of chalazion and chalazion-associated pyogenic granuloma. Although various inflammatory cells are involved in the pathology of chalazion and pyogenic granuloma, a significantly higher proportion of CD4-positive T cells may be closely related to the pathological mechanisms of both lesions.
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Affiliation(s)
- Rey Nemoto
- Department of Ophthalmology, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-Ku, Tokyo, Japan
| | - Yoshihiko Usui
- Department of Ophthalmology, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-Ku, Tokyo, Japan.
| | - Hiroyuki Komatsu
- Department of Ophthalmology, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-Ku, Tokyo, Japan
| | - Kinya Tsubota
- Department of Ophthalmology, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-Ku, Tokyo, Japan
| | - Risa Sugawara
- Department of Ophthalmology, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-Ku, Tokyo, Japan
| | - Toshitaka Nagao
- Department of Anatomic Pathology, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-Ku, Tokyo, Japan
| | - Hiroshi Goto
- Department of Ophthalmology, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-Ku, Tokyo, Japan
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Raskovalova T, Jacob MC, Park S. Flow cytometric analysis of peripheral blood neutrophil myeloperoxidase expression in myelodysplastic neoplasms. Leukemia 2024; 38:923-924. [PMID: 38486127 DOI: 10.1038/s41375-024-02223-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 03/04/2024] [Accepted: 03/06/2024] [Indexed: 04/07/2024]
Affiliation(s)
- Tatiana Raskovalova
- Laboratoire d'immunologie, Université Grenoble Alpes, Grenoble University Hospital, Grenoble, France.
- Institute for Advanced Biosciences (IAB), INSERM U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France.
| | - Marie-Christine Jacob
- Laboratoire d'immunologie, Université Grenoble Alpes, Grenoble University Hospital, Grenoble, France
- Institute for Advanced Biosciences (IAB), INSERM U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
| | - Sophie Park
- Institute for Advanced Biosciences (IAB), INSERM U1209, CNRS UMR 5309, Université Grenoble Alpes, Grenoble, France
- Service d'Hématologie, Université Grenoble Alpes, Grenoble University Hospital, Grenoble, France
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38
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Li G, Tanaka T, Ouchida T, Kaneko MK, Suzuki H, Kato Y. Cx 1Mab-1: A Novel Anti-mouse CXCR1 Monoclonal Antibody for Flow Cytometry. Monoclon Antib Immunodiagn Immunother 2024; 43:59-66. [PMID: 38593439 DOI: 10.1089/mab.2023.0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024] Open
Abstract
The C-X-C motif chemokine receptor-1 (CXCR1) is a rhodopsin-like G-protein-coupled receptor, expressed on the cell surface of immune cells and tumors. CXCR1 interacts with some C-X-C chemokines, such as CXCL6, CXCL7, and CXCL8/interleukin-8, which are produced by various cells. Since CXCR1 is involved in several diseases including tumors and diabetes mellitus, drugs targeting CXCR1 have been developed. Therefore, the development of sensitive monoclonal antibodies (mAbs) for CXCR1 has been desired for the diagnosis and treatment. This study established a novel anti-mouse CXCR1 (mCXCR1) mAb, Cx1Mab-1 (rat IgG1, kappa), using the Cell-Based Immunization and Screening method. Cx1Mab-1 reacted with mCXCR1-overexpressed Chinese hamster ovary-K1 (CHO/mCXCR1) and mCXCR1-overexpressed LN229 glioblastoma (LN229/mCXCR1) in flow cytometry. Cx1Mab-1 demonstrated a high binding affinity for CHO/mCXCR1 and LN229/mCXCR1 with a dissociation constant of 2.6 × 10-9 M and 2.1 × 10-8 M, respectively. Furthermore, Cx1Mab-1 could detect mCXCR1 by Western blot analysis. These results indicated that Cx1Mab-1 is useful for detecting mCXCR1, and provides a possibility for targeting mCXCR1-expressing cells in vivo experiments.
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Affiliation(s)
- Guanjie Li
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tomohiro Tanaka
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tsunenori Ouchida
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Mika K Kaneko
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroyuki Suzuki
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yukinari Kato
- Department of Antibody Drug Development, Tohoku University Graduate School of Medicine, Sendai, Japan
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Kobayashi H, Shiba T, Yoshida T, Bolidong D, Kato K, Sato Y, Mochizuki M, Seto T, Kawashiri S, Hanayama R. Precise analysis of single small extracellular vesicles using flow cytometry. Sci Rep 2024; 14:7465. [PMID: 38553534 PMCID: PMC10980769 DOI: 10.1038/s41598-024-57974-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 03/23/2024] [Indexed: 04/02/2024] Open
Abstract
Methods that enable specific and sensitive quantification of small extracellular vesicles (sEVs) using flow cytometry are still under development. Aggregation or adsorption of antibodies causes sub-nano sized particles or non-specific binding and largely affects the results of flow cytometric analysis of single sEVs. Comparison of control IgG and target-specific IgG is inappropriate because they have different characters. Here, we evaluate four preparation methods for flow cytometry, including ultracentrifugation, density gradient centrifugation, size exclusion chromatography (SEC), and the TIM4-affinity method by using tetraspanin-deficient sEVs. The ultracentrifugation or density gradient centrifugation preparation method has large false-positive rates for tetraspanin staining. Conversely, preparation methods using SEC or the TIM4-affinity method show specific detection of single sEVs, which elucidate the roles of sEV biogenesis regulators in the generation of sEV subpopulations. The methods are also useful for the detection of rare disease-related markers, such as PD-L1. Flow cytometric analysis using SEC or the TIM4-affinity method could accelerate research into sEV biogenesis and the development of sEV-based diagnostics and therapies.
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Affiliation(s)
- Hisano Kobayashi
- Department of Immunology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
- Oral and Maxillofacial Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Takayuki Shiba
- Department of Immunology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
- Institute of Science and Engineering, Faculty of Frontier Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Takeshi Yoshida
- Department of Immunology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
- WPI Nano Life Science Institute (NanoLSI), Kanazawa University, Kanazawa, Ishikawa, Japan.
| | - Dilireba Bolidong
- Department of Immunology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
- WPI Nano Life Science Institute (NanoLSI), Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Koroku Kato
- Oral and Maxillofacial Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | | | | | - Takafumi Seto
- Institute of Science and Engineering, Faculty of Frontier Engineering, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Shuichi Kawashiri
- Oral and Maxillofacial Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Rikinari Hanayama
- Department of Immunology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
- WPI Nano Life Science Institute (NanoLSI), Kanazawa University, Kanazawa, Ishikawa, Japan.
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Shokati A, Naser Moghadasi A, Ghashghaei A, Sahraian MA, Chahardouli B, Mousavi SA, Ai J, Nikbakht M. Good manufacturing practices production of human placental derived mesenchymal stem cells for therapeutic applications: focus on multiple sclerosis. Mol Biol Rep 2024; 51:460. [PMID: 38551770 DOI: 10.1007/s11033-024-09372-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 02/21/2024] [Indexed: 04/02/2024]
Abstract
BACKGROUND Among neurological diseases, multiple sclerosis (MS) affects mostly young adults and can cause long-term disability. While most medications with approval from regulatory agencies are very effective in treating MS disease, they are unable to repair the tissue damage found in the central nervous system (CNS). Consequently, Cell-based therapy particularly using mesenchymal stem/stromal cells (MSCs), holds promise for neuroprotection and tissue repair in MS treatment. Furthermore, placenta-derived MSCs (PLMSCs) have shown the potential to treat MS due to their abundance, noninvasive isolation from discarded tissues, no ethical problems, anti-inflammatory, and reparative properties. Accordingly, good manufacturing practices (GMPs) plays a crucial part in clinical SCs manufacturing. The purpose of our article is to discuss GMP-grade PLMSC protocols for treating MS as well as other clinical applications. METHODS AND RESULTS Placental tissue obtained of a healthy donor during the caesarean delivery and PLMSCs isolated by GMP standards. Flow cytometry was used to assess the expression of the CD markers CD34, CD105, CD90, and CD73 in the MSCs and the mesodermal differentiation ability was evaluated. Furthermore, Genetic evaluation of PLMSCs was done by G-banded karyotyping and revealed no chromosomal instability. In spite of the anatomical origin of the starting material, PLMSCs using this method of culture were maternal in origin. CONCLUSIONS We hope that our protocol for clinical manufacturing of PLMSCs according to GMP standards will assist researchers in isolating MSCs from placental tissue for clinical and pre-clinical applications.
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Affiliation(s)
- Ameneh Shokati
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences (TUMS), Tehran, Iran
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Abdorreza Naser Moghadasi
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
| | - Andisheh Ghashghaei
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Sahraian
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Bahram Chahardouli
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Asadollah Mousavi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Jafar Ai
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
| | - Mohsen Nikbakht
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
- Research Institute for Oncology, Hematology and Cell Therapy, Shariati Hospital, Tehran University of Medical Sciences, Kargar Shomali Street, P. O. Box.: 1411713131, Tehran, Iran.
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41
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Ullas S, Sinclair C. Applications of Flow Cytometry in Drug Discovery and Translational Research. Int J Mol Sci 2024; 25:3851. [PMID: 38612661 PMCID: PMC11011675 DOI: 10.3390/ijms25073851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/23/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Flow cytometry is a mainstay technique in cell biology research, where it is used for phenotypic analysis of mixed cell populations. Quantitative approaches have unlocked a deeper value of flow cytometry in drug discovery research. As the number of drug modalities and druggable mechanisms increases, there is an increasing drive to identify meaningful biomarkers, evaluate the relationship between pharmacokinetics and pharmacodynamics (PK/PD), and translate these insights into the evaluation of patients enrolled in early clinical trials. In this review, we discuss emerging roles for flow cytometry in the translational setting that supports the transition and evaluation of novel compounds in the clinic.
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Affiliation(s)
| | - Charles Sinclair
- Flagship Pioneering, 140 First Street, Cambridge, MA 02141, USA;
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42
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Signoretto I, Calzetti F, Gasperini S, Bianchetto-Aguilera F, Gardiman E, Finotti G, Tecchio C, Tamassia N, Cassatella MA. Human CD34+/dim neutrophil-committed progenitors do not differentiate into neutrophil-like CXCR1+CD14+CD16- monocytes in vitro. J Leukoc Biol 2024; 115:695-705. [PMID: 38114064 DOI: 10.1093/jleuko/qiad160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/25/2023] [Accepted: 11/28/2023] [Indexed: 12/21/2023] Open
Abstract
The advent of recent cutting-edge technologies has allowed the discovery and characterization of novel progenitors of human neutrophils, including SSCloCD66b+CD15+CD11b-CD49dhiproNeu1s, SSChiCD66b+CD15+CD11b-CD49dintproNeus2s, CD66b+CD15+CD11b+CD49d+CD101-preNeus, and Lin-CD66b+CD117+CD71+eNePs. In this research field, we recently identified CD66b-CD38+CD64dimCD115-, CD34+, and CD34dim/- cells exclusively committed to the neutrophil lineage (which we renamed as CD34+ and CD34dim/- neutrophil-committed progenitors), representing the earliest neutrophil precursors identifiable and sorted by flow cytometry. Moreover, based on their differential CD34 and CD45RA expression, we could identify 4 populations of neutrophil-committed progenitors: CD34+CD45RA-/NCP1s, CD34+CD45RA+/NCP2s, CD34dim/-CD45RA+/NCP3s, and CD34dim/-CD45RA-/NCP4s. This said, a very recent study by Ikeda and coworkers (PMID: 36862552) reported that neutrophil precursors, termed either neutrophil progenitors or "early neutrophil-committed progenitors," would generate immunosuppressive neutrophil-like CXCR1+CD14+CD16- monocytes. Hence, presuming that neutrophil progenitors/"early neutrophil-committed progenitors" correspond to neutrophil-committed progenitors, the selective neutrophil commitment that we attributed to neutrophil-committed progenitors is contradicted by Ikeda and coworkers' article. In this study, by performing a more analytical reevaluation at the phenotypic and molecular levels of the cells generated by neutrophil-committed progenitors 2 and 4 (selected as representatives of neutrophil-committed progenitors), we categorically exclude that neutrophil-committed progenitors generate neutrophil-like CXCR1+CD14+CD16- monocytes. Rather, we provide substantial evidence indicating that the cells generated by neutrophil progenitors/"early neutrophil-committed progenitors" are neutrophilic cells at a different stage of maturation, displaying moderate levels of CD14, instead of neutrophil-like CXCR1+CD14+CD16- monocytes, as pointed by Ikeda and coworkers. Hence, the conclusion that neutrophil progenitors/"early neutrophil-committed progenitors" aberrantly differentiate into neutrophil-like monocytes derives, in our opinion, from data misinterpretation.
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Affiliation(s)
- Ilaria Signoretto
- Department of Medicine, Section of General Pathology, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
| | - Federica Calzetti
- Department of Medicine, Section of General Pathology, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
| | - Sara Gasperini
- Department of Medicine, Section of General Pathology, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
| | | | - Elisa Gardiman
- Department of Medicine, Section of General Pathology, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
| | - Giulia Finotti
- Centro Piattaforme Tecnologiche, University of Verona, Piazzale L.A. Scuro 10, 37134 Verona, Italy
| | - Cristina Tecchio
- Department of Medicine, Section of Hematology and Bone Marrow Transplant Unit, University of Verona, Piazzale L.A. Scuro 10, 37134 Verona, Italy
| | - Nicola Tamassia
- Department of Medicine, Section of General Pathology, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
| | - Marco A Cassatella
- Department of Medicine, Section of General Pathology, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy
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Amon L, Seichter A, Vurnek D, Heger L, Lächele L, Tochoedo NR, Kaszubowski T, Hatscher L, Baranska A, Tchitashvili G, Nimmerjahn F, Lehmann CHK, Dudziak D. Clec12A, CD301b, and FcγRIIB/III define the heterogeneity of murine DC2s and DC3s. Cell Rep 2024; 43:113949. [PMID: 38492222 DOI: 10.1016/j.celrep.2024.113949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 02/02/2024] [Accepted: 02/26/2024] [Indexed: 03/18/2024] Open
Abstract
Over the last decade, multiple studies have investigated the heterogeneity of murine conventional dendritic cells type 2 (cDC2s). However, their phenotypic similarity with monocytes and macrophages renders their clear identification challenging. By creating a protein atlas utilizing multiparameter flow cytometry, we show that ESAM+ cDC2s are a specialized feature of the spleen strongly differing in their proteome from other cDC2s. In contrast, all other tissues are populated by Clec12A+ cDC2s or Clec12A- cDC2s (high or low for Fcγ receptors, C-type lectin receptors, and CD11b, respectively), rendering Clec12A+ cDC2s classical sentinels. Further, expression analysis of CD301b, Clec12A, and FcγRIIB/III provides a conserved definition of cDC2 heterogeneity, including the discovery of putative FcγRIIB/III+ DC3s across tissues. Finally, our data reveal that cell identity (ontogeny) dictates the proteome that is further fine-tuned by the tissue environment on macrophages and dendritic cells (DCs), while monocytes and plasmacytoid DCs (pDCs) display subset intrinsic default settings.
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Affiliation(s)
- Lukas Amon
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Anna Seichter
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Damir Vurnek
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany; Institute of Immunology, Jena University Hospital, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Lukas Heger
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Lukas Lächele
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Nounagnon Romaric Tochoedo
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Tomasz Kaszubowski
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Lukas Hatscher
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany; Department of Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin, 10117 Berlin, Germany
| | - Anna Baranska
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Giorgi Tchitashvili
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Falk Nimmerjahn
- Division of Genetics, Department of Biology, Friedrich-Alexander-University Erlangen-Nürnberg, 91058 Erlangen, Germany; Medical Immunology Campus Erlangen, 91054 Erlangen, Germany
| | - Christian Herbert Kurt Lehmann
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany; Medical Immunology Campus Erlangen, 91054 Erlangen, Germany; Deutsches Zentrum Immuntherapie (DZI), 91054 Erlangen, Germany; Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg (CCC ER-EMN), 91054 Erlangen, Germany; Department of Pediatrics and Adolescent Medicine, Friedrich-Alexander-University (FAU) Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Diana Dudziak
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91052 Erlangen, Germany; Institute of Immunology, Jena University Hospital, Friedrich-Schiller-University Jena, 07743 Jena, Germany; Medical Immunology Campus Erlangen, 91054 Erlangen, Germany; Deutsches Zentrum Immuntherapie (DZI), 91054 Erlangen, Germany; Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg (CCC ER-EMN), 91054 Erlangen, Germany.
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Tsubouchi A, An Y, Kawamura Y, Yanagihashi Y, Nakayama H, Murata Y, Teranishi K, Ishiguro S, Aburatani H, Yachie N, Ota S. Pooled CRISPR screening of high-content cellular phenotypes using ghost cytometry. Cell Rep Methods 2024; 4:100737. [PMID: 38531306 PMCID: PMC10985231 DOI: 10.1016/j.crmeth.2024.100737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 10/30/2023] [Accepted: 02/27/2024] [Indexed: 03/28/2024]
Abstract
Recent advancements in image-based pooled CRISPR screening have facilitated the mapping of diverse genotype-phenotype associations within mammalian cells. However, the rapid enrichment of cells based on morphological information continues to pose a challenge, constraining the capacity for large-scale gene perturbation screening across diverse high-content cellular phenotypes. In this study, we demonstrate the applicability of multimodal ghost cytometry-based cell sorting, including both fluorescent and label-free high-content phenotypes, for rapid pooled CRISPR screening within vast cell populations. Using the high-content cell sorter operating in fluorescence mode, we successfully executed kinase-specific CRISPR screening targeting genes influencing the nuclear translocation of RelA. Furthermore, using the multiparametric, label-free mode, we performed large-scale screening to identify genes involved in macrophage polarization. Notably, the label-free platform can enrich target phenotypes without requiring invasive staining, preserving untouched cells for downstream assays and expanding the potential for screening cellular phenotypes even when suitable markers are absent.
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Affiliation(s)
| | - Yuri An
- ThinkCyte Inc., Tokyo 113-8654, Japan
| | | | | | | | | | | | - Soh Ishiguro
- School of Biomedical Engineering, Faculty of Medicine and Faculty of Applied Science, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Hiroyuki Aburatani
- Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo 153-8904, Japan
| | - Nozomu Yachie
- School of Biomedical Engineering, Faculty of Medicine and Faculty of Applied Science, University of British Columbia, Vancouver, BC V6T 1Z3, Canada; Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo 153-8904, Japan
| | - Sadao Ota
- ThinkCyte Inc., Tokyo 113-8654, Japan; Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo 153-8904, Japan.
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45
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Schildknecht K, Samans B, Gussmann J, Baron U, Raschke E, Babel N, Oppatt J, Gellhaus K, Rossello A, Janack I, Olek S. Specifications of qPCR based epigenetic immune cell quantification. Clin Chem Lab Med 2024; 62:615-626. [PMID: 37982750 DOI: 10.1515/cclm-2023-1056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 10/25/2023] [Indexed: 11/21/2023]
Abstract
OBJECTIVES Immune monitoring is an important aspect in diagnostics and clinical trials for patients with compromised immune systems. Flow cytometry is the standard method for immune cell counting but faces limitations. Best practice guidelines are available, but lack of standardization complicates compliance with e.g., in vitro diagnostic regulations. Limited sample availability forces immune monitoring to predominantly use population-based reference intervals. Epigenetic qPCR has evolved as alternative with broad applicability and low logistical demands. Analytical performance specifications (APS) have been defined for qPCR in several regulated fields including testing of genetically modified organisms or vector-shedding. METHODS APS were characterized using five epigenetic qPCR-based assays quantifying CD3+, CD4+, CD8+ T, B and NK cells in light of regulatory requirements. RESULTS Epigenetic qPCR meets all specifications including bias, variability, linearity, ruggedness and sample stability as suggested by pertinent guidelines and regulations. The assays were subsequently applied to capillary blood from 25 normal donors over a 28-day period. Index of individuality (IoI) and reference change values were determined to evaluate potential diagnostic gains of individual reference intervals. Analysis of the IoI suggests benefits for individual over population-based references. Reference change values (RCVs) show that changes of approx. Fifty percent from prior measurement are suggestive for clinically relevant changes in any of the 5 cell types. CONCLUSIONS The demonstrated precision, long-term stability and obtained RCVs render epigenetic cell counting a promising tool for immune monitoring in clinical trials and diagnosis.
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Affiliation(s)
- Konstantin Schildknecht
- Ivana Türbachova Laboratory for Epigenetics, Epiontis, Precision for Medicine GmbH, Berlin, Germany
| | - Björn Samans
- Ivana Türbachova Laboratory for Epigenetics, Epiontis, Precision for Medicine GmbH, Berlin, Germany
| | - Jasmin Gussmann
- Ivana Türbachova Laboratory for Epigenetics, Epiontis, Precision for Medicine GmbH, Berlin, Germany
| | - Udo Baron
- Ivana Türbachova Laboratory for Epigenetics, Epiontis, Precision for Medicine GmbH, Berlin, Germany
| | - Eva Raschke
- Ivana Türbachova Laboratory for Epigenetics, Epiontis, Precision for Medicine GmbH, Berlin, Germany
| | - Nina Babel
- Marienhospital Herne, Klinik I für Innere Medizin, Centrum für Translationale Medizin, Herne, Germany
| | - Julia Oppatt
- Ivana Türbachova Laboratory for Epigenetics, Epiontis, Precision for Medicine GmbH, Berlin, Germany
| | | | - Araceli Rossello
- Ivana Türbachova Laboratory for Epigenetics, Epiontis, Precision for Medicine GmbH, Berlin, Germany
| | - Isabell Janack
- Ivana Türbachova Laboratory for Epigenetics, Epiontis, Precision for Medicine GmbH, Berlin, Germany
| | - Sven Olek
- Ivana Türbachova Laboratory for Epigenetics, Epiontis, Precision for Medicine GmbH, Berlin, Germany
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46
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Rea DJ, Miller RS, Crucian BE, Valentine RW, Cristoforetti S, Bearg SB, Sipic Z, Cheng J, Yu R, Calaway KM, Eames D, Nelson ES, Lewandowski BE, Perusek GP, Chan EY. Single drop cytometry onboard the International Space Station. Nat Commun 2024; 15:2634. [PMID: 38528030 DOI: 10.1038/s41467-024-46483-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 02/29/2024] [Indexed: 03/27/2024] Open
Abstract
Real-time lab analysis is needed to support clinical decision making and research on human missions to the Moon and Mars. Powerful laboratory instruments, such as flow cytometers, are generally too cumbersome for spaceflight. Here, we show that scant test samples can be measured in microgravity, by a trained astronaut, using a miniature cytometry-based analyzer, the rHEALTH ONE, modified specifically for spaceflight. The base device addresses critical spaceflight requirements including minimal resource utilization and alignment-free optics for surviving rocket launch. To fully enable reduced gravity operation onboard the space station, we incorporated bubble-free fluidics, electromagnetic shielding, and gravity-independent sample introduction. We show microvolume flow cytometry from 10 μL sample drops, with data from five simultaneous channels using 10 μs bin intervals during each sample run, yielding an average of 72 million raw data points in approximately 2 min. We demonstrate the device measures each test sample repeatably, including correct identification of a sample that degraded in transit to the International Space Station. This approach can be utilized to further our understanding of spaceflight biology and provide immediate, actionable diagnostic information for management of astronaut health without the need for Earth-dependent analysis.
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Affiliation(s)
- Daniel J Rea
- DNA Medicine Institute (DMI), Bedford, MA, USA
- rHEALTH, Bedford, MA, USA
| | | | - Brian E Crucian
- Human Health and Performance Directorate, NASA Johnson Space Center, Houston, TX, USA
| | | | | | - Samuel B Bearg
- DNA Medicine Institute (DMI), Bedford, MA, USA
- rHEALTH, Bedford, MA, USA
| | - Zlatko Sipic
- DNA Medicine Institute (DMI), Bedford, MA, USA
- rHEALTH, Bedford, MA, USA
| | - Jamie Cheng
- DNA Medicine Institute (DMI), Bedford, MA, USA
- rHEALTH, Bedford, MA, USA
| | - Rebecca Yu
- DNA Medicine Institute (DMI), Bedford, MA, USA
- rHEALTH, Bedford, MA, USA
| | | | | | | | | | | | - Eugene Y Chan
- DNA Medicine Institute (DMI), Bedford, MA, USA.
- rHEALTH, Bedford, MA, USA.
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47
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Agioti S, Zaravinos A. Immune Cytolytic Activity and Strategies for Therapeutic Treatment. Int J Mol Sci 2024; 25:3624. [PMID: 38612436 PMCID: PMC11011457 DOI: 10.3390/ijms25073624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/14/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Intratumoral immune cytolytic activity (CYT), calculated as the geometric mean of granzyme-A (GZMA) and perforin-1 (PRF1) expression, has emerged as a critical factor in cancer immunotherapy, with significant implications for patient prognosis and treatment outcomes. Immune checkpoint pathways, the composition of the tumor microenvironment (TME), antigen presentation, and metabolic pathways regulate CYT. Here, we describe the various methods with which we can assess CYT. The detection and analysis of tumor-infiltrating lymphocytes (TILs) using flow cytometry or immunohistochemistry provide important information about immune cell populations within the TME. Gene expression profiling and spatial analysis techniques, such as multiplex immunofluorescence and imaging mass cytometry allow the study of CYT in the context of the TME. We discuss the significant clinical implications that CYT has, as its increased levels are associated with positive clinical outcomes and a favorable prognosis. Moreover, CYT can be used as a prognostic biomarker and aid in patient stratification. Altering CYT through the different methods targeting it, offers promising paths for improving treatment responses. Overall, understanding and modulating CYT is critical for improving cancer immunotherapy. Research into CYT and the factors that influence it has the potential to transform cancer treatment and improve patient outcomes.
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Affiliation(s)
- Stephanie Agioti
- Cancer Genetics, Genomics and Systems Biology Laboratory, Basic and Translational Cancer Research Center (BTCRC), 1516 Nicosia, Cyprus;
| | - Apostolos Zaravinos
- Cancer Genetics, Genomics and Systems Biology Laboratory, Basic and Translational Cancer Research Center (BTCRC), 1516 Nicosia, Cyprus;
- Department of Life Sciences, School of Sciences, European University Cyprus, 1516 Nicosia, Cyprus
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48
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Tang X, Mai H, Wang L, Chen S, Chen F, Li T, Liu Y, Zhou G, Liu S, Wang Y, Liu S, Fu X, Wen F. Diagnostic significance of cerebrospinal fluid flow cytometry in Chinese children with B lineage acute lymphoblastic leukemia. BMC Pediatr 2024; 24:204. [PMID: 38519960 PMCID: PMC10958868 DOI: 10.1186/s12887-024-04684-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 03/01/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Central nervous system leukemia (CNSL) is one of the major causes of the poor prognosis of childhood leukemia. We aimed to compare the sensitivity of cytomorphology (CM) and flow cytometry (FCM) in diagnosing CNSL, emphasizing the importance of FCM in the diagnosis process. METHODS One-hundred-sixty-five children with newly diagnosed B-cell Acute Lymphoblastic Leukemia (B-cell ALL) were included in this study. Cerebrospinal fluid (CSF) samples were taken for routine CSF analysis, CM analysis, and FCM examination. Computed tomography scans and/or magnetic resonance imaging were performed at diagnosis. Patients with CNS2, CNS3, and traumatic lumbar puncture (TLP) at diagnosis received two additional courses of triple intrathecal injections during induction treatment. We compared the sensitivity of FCM and CM in the diagnosis of children with CNSL. RESULTS One hundred and twenty-eight (77.58%) CSF samples were negative by either CM or FCM (CM-/FCM-), four (2.42%) were positive by both CM and FCM (CM+/FCM+), and thirty-three (20%) displayed a single positive finding by FCM (CM-/FCM+) (p = 0.044). By adding two intrathecal injections in the induction treatment, ten children with TLP+ had no CNS relapse, like those with TLP-. However, compared to CNS1 and TLP, the event-free survival (EFS) did not significantly improve in patients with CNS2 and CNS3. Moreover, CNSL status was associated with worse 3-year EFS (p < 0.05). CONCLUSIONS We have validated that FCM is more accurate in stratifying the status of the CNS compared to CM analysis. However, to improve the EFS rate of childhood leukemia, it is necessary to combine CM examination, FCM, and cranial imaging for the early diagnosis of CNSL.
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Affiliation(s)
- Xue Tang
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China
- Department of Hematology and Oncology, Shenzhen Children's Hospital of China Medical University, Shenzhen, China
| | - Huirong Mai
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China
| | - Lulu Wang
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China
| | - Shiyang Chen
- Department of Laboratory Medicine, Shenzhen Children's Hospital, Shenzhen, China
| | - Fen Chen
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China
| | - Tonghui Li
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China
| | - Yi Liu
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China
| | - Guichi Zhou
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China
| | - Shilin Liu
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China
| | - Ying Wang
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China
| | - Sixi Liu
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China
| | - Xiaoying Fu
- Department of Laboratory Medicine, Shenzhen Children's Hospital, Shenzhen, China.
| | - Feiqiu Wen
- Department of Hematology and Oncology, Shenzhen Children's Hospital, No.7019 Yitian Road, Futian District, Shenzhen, China.
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Seedhom MO, Dersh D, Holly J, Pavon-Eternod M, Wei J, Angel M, Shores L, David A, Santos J, Hickman H, Yewdell JW. Paradoxical imbalance between activated lymphocyte protein synthesis capacity and rapid division rate. eLife 2024; 12:RP89015. [PMID: 38512721 PMCID: PMC10957176 DOI: 10.7554/elife.89015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024] Open
Abstract
Rapid lymphocyte cell division places enormous demands on the protein synthesis machinery. Flow cytometric measurement of puromycylated ribosome-associated nascent chains after treating cells or mice with translation initiation inhibitors reveals that ribosomes in resting lymphocytes in vitro and in vivo elongate at typical rates for mammalian cells. Intriguingly, elongation rates can be increased up to 30% by activation in vivo or fever temperature in vitro. Resting and activated lymphocytes possess abundant monosome populations, most of which actively translate in vivo, while in vitro, nearly all can be stalled prior to activation. Quantitating lymphocyte protein mass and ribosome count reveals a paradoxically high ratio of cellular protein to ribosomes insufficient to support their rapid in vivo division, suggesting that the activated lymphocyte proteome in vivo may be generated in an unusual manner. Our findings demonstrate the importance of a global understanding of protein synthesis in lymphocytes and other rapidly dividing immune cells.
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Affiliation(s)
- Mina O Seedhom
- National Institute of Allergy and Infectious DiseasesBethesdaUnited States
| | - Devin Dersh
- National Institute of Allergy and Infectious DiseasesBethesdaUnited States
| | - Jaroslav Holly
- National Institute of Allergy and Infectious DiseasesBethesdaUnited States
| | | | - Jiajie Wei
- National Institute of Allergy and Infectious DiseasesBethesdaUnited States
| | - Matthew Angel
- National Institute of Allergy and Infectious DiseasesBethesdaUnited States
| | - Lucas Shores
- National Institute of Allergy and Infectious DiseasesBethesdaUnited States
| | - Alexandre David
- CNRS UMR-5203; INSERM U661; UM1; UM2, Institut de Génomique FonctionnelleMontpellierFrance
| | - Jefferson Santos
- National Institute of Allergy and Infectious DiseasesBethesdaUnited States
| | - Heather Hickman
- National Institute of Allergy and Infectious DiseasesBethesdaUnited States
| | - Jonathan W Yewdell
- National Institute of Allergy and Infectious DiseasesBethesdaUnited States
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50
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Yang L, Wang SY, Jiang TT, Deng W, Chang M, Wu SL, Cao WH, Lu Y, Shen G, Liu RY, Gao YJ, Xu MJ, Hu LP, Zhang L, Xie Y, Li MH. Relationship between Phenotypic Changes of Dendritic Cell Subsets and the Onset of Plateau Phase during Intermittent Interferon Therapy in Patients with CHB. Biomed Environ Sci 2024; 37:303-314. [PMID: 38582994 DOI: 10.3967/bes2024.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 12/14/2023] [Indexed: 04/08/2024]
Abstract
Objective This study aimed to evaluate whether the onset of the plateau phase of slow hepatitis B surface antigen decline in patients with chronic hepatitis B treated with intermittent interferon therapy is related to the frequency of dendritic cell subsets and expression of the costimulatory molecules CD40, CD80, CD83, and CD86. Method This was a cross-sectional study in which patients were divided into a natural history group (namely NH group), a long-term oral nucleoside analogs treatment group (namely NA group), and a plateau-arriving group (namely P group). The percentage of plasmacytoid dendritic cell and myeloid dendritic cell subsets in peripheral blood lymphocytes and monocytes and the mean fluorescence intensity of their surface costimulatory molecules were detected using a flow cytometer. Results In total, 143 patients were enrolled (NH group, n = 49; NA group, n = 47; P group, n = 47). The results demonstrated that CD141/CD1c double negative myeloid dendritic cell (DNmDC)/lymphocytes and monocytes (%) in P group (0.041 [0.024, 0.069]) was significantly lower than that in NH group (0.270 [0.135, 0.407]) and NA group (0.273 [0.150, 0.443]), and CD86 mean fluorescence intensity of DNmDCs in P group (1832.0 [1484.0, 2793.0]) was significantly lower than that in NH group (4316.0 [2958.0, 5169.0]) and NA group (3299.0 [2534.0, 4371.0]), Adjusted P all < 0.001. Conclusion Reduced DNmDCs and impaired maturation may be associated with the onset of the plateau phase during intermittent interferon therapy in patients with chronic hepatitis B.
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Affiliation(s)
- Liu Yang
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China;Center for Infectious Diseases, Second Affiliated Hospital of Air Force Medical University, Xi'an 710038, Shaanxi, China
| | - Shi Yu Wang
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Ting Ting Jiang
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Wen Deng
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Min Chang
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Shu Ling Wu
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Wei Hua Cao
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Yao Lu
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Ge Shen
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Ru Yu Liu
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Yuan Jiao Gao
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Meng Jiao Xu
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Lei Ping Hu
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Lu Zhang
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Yao Xie
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China;Department of Hepatology Division 2, Peking University Ditan Teaching Hospital, Beijing 100015, China
| | - Ming Hui Li
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China;Department of Hepatology Division 2, Peking University Ditan Teaching Hospital, Beijing 100015, China
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