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Fang J, Shankar N, Bao L, Haag M, Carstens B, Pang CS. Near-tetraploidy/tetraploidy acute myeloid leukemia with clinical, pathologic and molecular characteristics. Leuk Lymphoma 2024:1-10. [PMID: 39052840 DOI: 10.1080/10428194.2024.2382923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/29/2024] [Accepted: 07/17/2024] [Indexed: 07/27/2024]
Abstract
Near-tetraploidy/tetraploidy (NT/T) is a cytogenetic alteration in acute myeloid leukemia (AML). In AML, specific chromosomal alterations are associated with clinical, morphological, and immunophenotypic features. The impact of cytogenetics on the prognosis of AML is well established. However, the prognostic implication of NT/T on AML remains unclear. Our aim is to further characterize the clinical, morphologic, immunophenotypic, molecular mutational, and prognostic features of NT/T AML. This retrospective chart review of NT/T AML cases showed NT/T AML was more common in older adult males, with predominately large blasts and myelodysplasia-related features. The most common lineage of dysplasia was dysgranulopoiesis in 77.8% of cases. Cases displayed multiple cytogenetic abnormalities, with only four showing NT/T as the sole abnormality. TP53 was the most common molecular mutation associated with NT/T AML (44.5%). Of the patients receiving treatment for NT/T AML, 80% achieved a CR. The median overall survival for the entire cohort was 4.5 months.
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Affiliation(s)
- Jacob Fang
- Department of Pathology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Nakul Shankar
- Department of Pathology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Liming Bao
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Mary Haag
- Department of Pathology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Billie Carstens
- Department of Pathology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Changlee S Pang
- Department of Pathology, University of Colorado School of Medicine, Aurora, CO, USA
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2
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Evidence for Recombinant GRP78, CALR, PDIA3 and GPI as Mediators of Genetic Instability in Human CD34+ Cells. Cancers (Basel) 2022; 14:cancers14122883. [PMID: 35740549 PMCID: PMC9221337 DOI: 10.3390/cancers14122883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/03/2022] [Accepted: 06/08/2022] [Indexed: 12/10/2022] Open
Abstract
Soluble factors released from irradiated human mesenchymal stromal cells (MSC) may induce genetic instability in human CD34+ cells, potentially mediating hematologic disorders. Recently, we identified four key proteins in the secretome of X-ray-irradiated MSC, among them three endoplasmic reticulum proteins, the 78 kDa glucose-related protein (GRP78), calreticulin (CALR), and protein disulfide-isomerase A3 (PDIA3), as well as the glycolytic enzyme glucose-6-phosphate isomerase (GPI). Here, we demonstrate that exposition of CD34+ cells to recombinant GRP78, CALR, PDIA3 and GPI induces substantial genetic instability. Increased numbers of γH2AX foci (p < 0.0001), centrosome anomalies (p = 0.1000) and aberrant metaphases (p = 0.0022) were detected in CD34+ cells upon incubation with these factors. Specifically, γH2AX foci were found to be induced 4−5-fold in response to any individual of the four factors, and centrosome anomalies by 3−4 fold compared to control medium, which contained none of the recombinant proteins. Aberrant metaphases, not seen in the context of control medium, were detected to a similar extent than centrosome anomalies across the four factors. Notably, the strongest effects were observed when all four factors were collectively provided. In summary, our data suggest that specific components of the secretome from irradiated MSC act as mediators of genetic instability in CD34+ cells, thereby possibly contributing to the pathogenesis of radiation-induced hematologic disorders beyond direct radiation-evoked DNA strand breaks.
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Mukherjee S, Ali AM, Murty VV, Raza A. Mutation in SF3B1 gene promotes formation of polyploid giant cells in Leukemia cells. Med Oncol 2022; 39:65. [PMID: 35478057 PMCID: PMC9046281 DOI: 10.1007/s12032-022-01652-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 01/08/2022] [Indexed: 12/02/2022]
Abstract
Giant cells with polyploidy, termed polyploid giant cells, have been observed during normal growth, development, and pathologic states, such as solid cancer progression and resistance to therapy. Functional studies of polyploidal giant cancer cells (PGCC) provided evidence that they arise when normal diploid cells are stressed, show stem cell-like properties, and give rise to tumors. In the present study, we report in K562 leukemia cell line that introduction of the hotspot K700E mutation in the gene SF3B1 using CRISPR/Cas9 method results in an increased frequency of multinucleated polyploid giant cells resistant to chemotherapeutic agent and serum starvation stress. These giant cells with higher ploidy are distinct from multinucleated megakaryocytes, are proliferative, and are characterized by increased accumulation of mitochondria. PGCC have been previously documented in solid tumors. This is the first report describing PGCCs in a cell line derived from a liquid cancer where increased frequency of PGCCs is linked to a specific genetic event. Since SF3B1 mutations are predominantly seen in MDS and other hematologic malignancies, our current findings will have significant clinical implications.
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Affiliation(s)
- Sanjay Mukherjee
- Division of Hematology/Oncology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Abdullah Mahmood Ali
- Division of Hematology/Oncology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Vundavalli V Murty
- Department of Pathology and Cell Biology, and Institute for Cancer Genetics, Department of Medicine, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Azra Raza
- Division of Hematology/Oncology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, 10032, USA.
- Herbert Irving Comprehensive Cancer Center, Columbia University, New York, NY, 10032, USA.
- MDS Center, Columbia University Irving Medical Center, 177 Fort Washington Avenue, Milstein Hospital Building, Room 6GN-435, New York, NY, 10032, USA.
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4
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Proteins Marking the Sequence of Genotoxic Signaling from Irradiated Mesenchymal Stromal Cells to CD34+ Cells. Int J Mol Sci 2021; 22:ijms22115844. [PMID: 34072546 PMCID: PMC8197937 DOI: 10.3390/ijms22115844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 05/19/2021] [Accepted: 05/26/2021] [Indexed: 12/12/2022] Open
Abstract
Non-targeted effects (NTE) of ionizing radiation may initiate myeloid neoplasms (MN). Here, protein mediators (I) in irradiated human mesenchymal stromal cells (MSC) as the NTE source, (II) in MSC conditioned supernatant and (III) in human bone marrow CD34+ cells undergoing genotoxic NTE were investigated. Healthy sublethal irradiated MSC showed significantly increased levels of reactive oxygen species. These cells responded by increasing intracellular abundance of proteins involved in proteasomal degradation, protein translation, cytoskeleton dynamics, nucleocytoplasmic shuttling, and those with antioxidant activity. Among the increased proteins were THY1 and GNA11/14, which are signaling proteins with hitherto unknown functions in the radiation response and NTE. In the corresponding MSC conditioned medium, the three chaperones GRP78, CALR, and PDIA3 were increased. Together with GPI, these were the only four altered proteins, which were associated with the observed genotoxic NTE. Healthy CD34+ cells cultured in MSC conditioned medium suffered from more than a six-fold increase in γH2AX focal staining, indicative for DNA double-strand breaks, as well as numerical and structural chromosomal aberrations within three days. At this stage, five proteins were altered, among them IQGAP1, HMGB1, and PA2G4, which are involved in malign development. In summary, our data provide novel insights into three sequential steps of genotoxic signaling from irradiated MSC to CD34+ cells, implicating that induced NTE might initiate the development of MN.
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Genotoxic Bystander Signals from Irradiated Human Mesenchymal Stromal Cells Mainly Localize in the 10-100 kDa Fraction of Conditioned Medium. Cells 2021; 10:cells10040827. [PMID: 33916980 PMCID: PMC8067571 DOI: 10.3390/cells10040827] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/03/2021] [Accepted: 04/04/2021] [Indexed: 12/28/2022] Open
Abstract
Genotoxic bystander signals released from irradiated human mesenchymal stromal cells (MSC) may induce radiation-induced bystander effects (RIBEs) in human hematopoietic stem and progenitor cells (HSPC), potentially causing leukemic transformation. Although the source of bystander signals is evident, the identification and characterization of these signals is challenging. Here, RIBEs were analyzed in human CD34+ cells cultured in distinct molecular size fractions of medium, conditioned by 2 Gy irradiated human MSC. Specifically, γH2AX foci (as a marker of DNA double-strand breaks) and chromosomal instability were evaluated in CD34+ cells grown in approximate (I) < 10 kDa, (II) 10–100 kDa and (III) > 100 kDa fractions of MSC conditioned medium and un-/fractionated control medium, respectively. Hitherto, significantly increased numbers of γH2AX foci (p = 0.0286) and aberrant metaphases (p = 0.0022) were detected in CD34+ cells grown in the (II) 10–100 kDa fraction (0.67 ± 0.10 γH2AX foci per CD34+ cell ∨ 3.8 ± 0.3 aberrant metaphases per CD34+ cell sample; mean ± SEM) when compared to (I) < 10 kDa (0.19 ± 0.01 ∨ 0.3 ± 0.2) or (III) > 100 kDa fractions (0.23 ± 0.04 ∨ 0.4 ± 0.4) or un-/fractionated control medium (0.12 ± 0.01 ∨ 0.1 ± 0.1). Furthermore, RIBEs disappeared after heat inactivation of medium at 75 °C. Taken together, our data suggest that RIBEs are mainly mediated by the heat-sensitive (II) 10–100 kDa fraction of MSC conditioned medium. We postulate proteins as RIBE mediators and in-depth proteome analyses to identify key bystander signals, which define targets for the development of next-generation anti-leukemic drugs.
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Xie J, Nachabe A, Hathaway LJ, Farah B, Berbari B, Li Y, Brown TC, Schmid JL, Socola F, Saba NS, Safah H. The prognostic implications of tetraploidy/near-Tetraploidy in acute myeloid leukemia: a case series and systematic review of the literature. Leuk Lymphoma 2021; 62:203-210. [PMID: 32993375 DOI: 10.1080/10428194.2020.1817435] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/23/2020] [Accepted: 08/22/2020] [Indexed: 10/23/2022]
Abstract
The prognostic significance and optimal management of tetraploidy/near-tetraploidy acute myeloid leukemia (T/NT AML) remains unclear given its limited data. This is especially true after factoring in additional chromosomal alterations, which carry their own prognostic weight. Here, we analyze 128 cases of T/NT in AML from the literature along with two additional cases, which is the largest review of this subject to date. Based on our retrospective analysis, we found that regardless of the risk status attributed to cytogenetics, the prognosis of tetraploid or near-tetraploid AML is dismal and should be incorporated within the unfavorable risk group. Complete remission is paramount to survival in this population. Specific induction protocols for high-risk AML appear to have higher rates of complete remission in the T/NT AML population. Moreover, longer overall survival can be achieved with chemotherapy followed by allogeneic stem cell transplantation at first complete remission.
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Affiliation(s)
- John Xie
- Deming Department of Internal Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | | | | | - Bachir Farah
- Southern Illinois Healthcare, Carterville, IL, USA
| | | | - Yuwen Li
- Hayward Genetics Center, Tulane University School of Medicine, New Orleans, LA, USA
| | - Theresa C Brown
- Hayward Genetics Center, Tulane University School of Medicine, New Orleans, LA, USA
| | - Janet L Schmid
- Department of Pathology, Tulane University, New Orleans, LA, USA
| | - Francisco Socola
- Section of Hematology and Medical Oncology, Department of Internal Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Nakhle S Saba
- Section of Hematology and Medical Oncology, Department of Internal Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Hana Safah
- Section of Hematology and Medical Oncology, Department of Internal Medicine, Tulane University School of Medicine, New Orleans, LA, USA
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Ballo O, Stratmann J, Serve H, Steffen B, Finkelmeier F, Brandts C. Blast vacuolization in AML patients indicates adverse-risk AML and is associated with impaired survival after intensive induction chemotherapy. PLoS One 2019; 14:e0223013. [PMID: 31568521 PMCID: PMC6768541 DOI: 10.1371/journal.pone.0223013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 09/11/2019] [Indexed: 11/19/2022] Open
Abstract
Introduction Vacuolization is a frequently found morphological feature in acute myeloid leukemia (AML) blasts. Subcellular origin and biological function as well as prognostic impact are currently unknown. The aim of this study was to evaluate whether vacuolization correlates with clinically relevant AML features. Materials & methods Bone marrow smears of patients diagnosed with AML at the University Hospital Frankfurt between January 2011 and August 2013 were analyzed for blast vacuolization and correlated with clinically relevant AML features. Patients undergoing standard induction chemotherapy were further analyzed for molecular and cytogenetic features as well as treatment response and survival. Results 14 of 100 patients diagnosed with AML receiving standard induction chemotherapy had evidence of blast vacuolization. Positivity for vacuolization correlated with a CD15 positive immunophenotype and with a higher incidence of high-risk AML according to the European LeukemiaNet risk stratification. AML patients with blast vacuolization had a poor blast clearance after standard induction chemotherapy and poor survival. Discussion In conclusion, our findings demonstrate that vacuolization can easily be determined in myeloid leukemia blasts and may be a useful biomarker to predict AML risk groups as well as early treatment response rates and survival.
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MESH Headings
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/immunology
- Bone Marrow/metabolism
- Bone Marrow/pathology
- Bone Marrow/ultrastructure
- Female
- Granulocyte Precursor Cells/metabolism
- Granulocyte Precursor Cells/pathology
- Granulocyte Precursor Cells/ultrastructure
- Humans
- Induction Chemotherapy/methods
- Leukemia, Myeloid, Acute/diagnosis
- Leukemia, Myeloid, Acute/metabolism
- Leukemia, Myeloid, Acute/mortality
- Leukemia, Myeloid, Acute/pathology
- Lewis X Antigen/genetics
- Lewis X Antigen/immunology
- Male
- Middle Aged
- Prognosis
- Retrospective Studies
- Risk Assessment
- Survival Analysis
- Vacuoles/metabolism
- Vacuoles/pathology
- Vacuoles/ultrastructure
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Affiliation(s)
- Olivier Ballo
- Department of Medicine, Hematology/Oncology, Goethe University, Theodor-Stern-Kai, Frankfurt/Main, Germany
- * E-mail: (OB); (CB)
| | - Jan Stratmann
- Department of Medicine, Hematology/Oncology, Goethe University, Theodor-Stern-Kai, Frankfurt/Main, Germany
| | - Hubert Serve
- Department of Medicine, Hematology/Oncology, Goethe University, Theodor-Stern-Kai, Frankfurt/Main, Germany
- German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Björn Steffen
- Department of Medicine, Hematology/Oncology, Goethe University, Theodor-Stern-Kai, Frankfurt/Main, Germany
| | - Fabian Finkelmeier
- Department of Medicine, Gastroenterology, Hepatology and Endocrinology, Goethe University, Theodor-Stern-Kai, Frankfurt/Main, Germany
| | - Christian Brandts
- Department of Medicine, Hematology/Oncology, Goethe University, Theodor-Stern-Kai, Frankfurt/Main, Germany
- German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Heidelberg, Germany
- * E-mail: (OB); (CB)
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8
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Khan AM, Munir A, Asrani R, Najjar S. Acute Myeloid Leukemia with Philadelphia Chromosome, Near-tetraploidy, and 5q Deletion. Cureus 2019; 11:e5606. [PMID: 31700719 PMCID: PMC6822556 DOI: 10.7759/cureus.5606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 09/09/2019] [Indexed: 11/26/2022] Open
Abstract
A 49-year-old male presented to his physician with three weeks of dyspnea, dry cough, and fever. He did not respond to antibiotics and corticosteroids. He presented to the emergency department with worsening symptoms, where blood work revealed severe anemia, leukocytosis, thrombocytopenia, and 61% blasts on peripheral smear. Bone marrow biopsy showed acute myeloid leukemia (AML). While the results of other studies were awaited, treatment was begun with 7+3 induction (cytarabine and daunorubicin). Karyotyping returned positive for the BCR-ABL1 fusion gene (Philadelphia chromosome), near-tetraploidy, and 5q deletion. Follow-up bone marrow biopsy revealed residual disease (12% blasts). Re-induction was initiated with 5+2 cytarabine and daunorubicin with the addition of dasatinib. Subsequent bone marrow biopsies revealed minimal residual disease and BCR-ABL on polymerase chain reaction (PCR). The patient was placed on dasatinib maintenance and later switched to nilotinib. This case demonstrates the simultaneous presence of rare cytogenetic abnormalities in AML. It also discusses the successful utilization of tyrosine kinase inhibitors (TKIs) in the treatment of BCR-ABL-positive AML, as there are no established guidelines.
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Affiliation(s)
| | - Ayesha Munir
- Internal Medicine, Albany Medical Center, Albany, USA
| | - Roshan Asrani
- Internal Medicine, Albany Medical Center, Albany, USA
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Yang R, Jiang M, Zhao J, Chen H, Gong J, You Y, Song L, Li Z, Li Q. Identification of chromosomal abnormalities and genomic features in near-triploidy/tetraploidy-acute leukemia by fluorescence in situ hybridization. Cancer Manag Res 2019; 11:1559-1567. [PMID: 30863166 DOI: 10.2147/cmar.s189025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Background Near-triploidy/tetraploidy is rarely found in acute leukemia. Only limited data are available to characterize this condition, and it remains largely unknown. Patients and methods In our study, we performed karyotype analysis on 1,031 patients diagnosed with acute leukemia from 2006 to 2018. A total of 10 patients of near-triploidy/tetraploidy karyotype were enrolled. Two cases of near-triploidy (66-79 chromosomes) and eight cases of near-tetraploidy (84-100 chromosomes) were identified. Bone marrow samples of these 10 patients were analyzed by fluorescence in situ hybridization with 19 commercially available probes that detected a small portion of gene alterations and large regions of chromosome amplifications. Results Of the six patients with acute myelocytic leukemia, we detected three cases of double t(8;21)(q22;q22) that have not been previously reported, and one of them demonstrated ins(21;8) (q22;q24q22). We also describe a novel pediatric case carrying double t(15;17)(q22;q21) and receiving targeted treatment with all-trans retinoic acid therapy. To date, this case has responded well to the regimen and has shown continuous complete remission. All patients received chemotherapy. One of them received allogeneic hematopoietic stem cell transplant (HSCT) and survived for 22 months. Eight of the 10 patients died, and the median overall survival was 11 months. Conclusion Using fluorescence in situ hybridization, we identified the distinct complex karyotype of near-triploidy/tetraploidy and provided further prognostic information. Tetraploidy acute promyelocytic leukemia had favorable prognosis; thus, HSCT was not necessary. The case of insertion t(21;8)(q22;q24q22) in tetraploidy responded poorly to chemotherapy and achieved molecular remission with difficultly. Data from patients in this group indicated that near-triploidy/tetraploidy acute leukemia has poor prognosis and new therapy is urgently needed.
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Affiliation(s)
- Ruqing Yang
- Reproductive Medicine Center, Department of Gynaecology and Obstetrics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Minghua Jiang
- Department of Clinical Laboratory, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China,
| | - Junzhao Zhao
- Reproductive Medicine Center, Department of Gynaecology and Obstetrics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Hui Chen
- Department of Clinical Laboratory, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China,
| | - Jian Gong
- Department of Clinical Laboratory, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China,
| | - Yaying You
- The Second Clinical Medical College, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Laiyue Song
- The Second Clinical Medical College, Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Zhen Li
- Department of Traditional Chinese Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Guangzhou, Guangdong 510150, China,
| | - Qian Li
- Department of Clinical Laboratory, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China,
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Jiang M, Zou X, Huang W. Ecotropic viral integration site 1 regulates the progression of acute myeloid leukemia via MS4A3-mediated TGFβ/EMT signaling pathway. Oncol Lett 2018; 16:2701-2708. [PMID: 30013666 DOI: 10.3892/ol.2018.8890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 12/19/2017] [Indexed: 12/18/2022] Open
Abstract
Acute myeloid leukemia (AML) is a type of malignant tumor that is caused by malignant clone hematopoietic stem cells. The ecotropic viral integration site 1 (Evi1) is a zinc finger transcription factor, which is highly expressed in AML, and its expression level has been associated with poor prognosis of AML. Previous studies have indicated that Evi1 may regulate cell proliferation, differentiation and apoptosis by inhibiting the membrane-spanning-4-domains subfamily-A member-3 (MS4A3) gene in AML. The aim of the present study was to investigate the role of Evi1 in the progression of AML. The results revealed that Evi1 was overexpressed in leukemia cells compared with normal T lymphocytes. MicroRNAs (miR)-133 and -431 that target Evi1 were investigated, and it was observed that there was a low expression of miR-431 in AML. The transfection of miR-431 was able to decrease the promoter methylation levels of the Evi1 gene in AML cells. The transfection of miR-431 also suppressed the migration and invasion of AML cells. The present study revealed that the transfection of miR-431 mimic was able to downregulate MS4A3 expression in AML cells. Furthermore, the expression levels of transforming growth factor β (TGFβ) and epithelial-to-mesenchymal transition (EMT) markers fibronectin, α-smooth muscle actin, and vimentin were downregulated following the transfection of miR-431 in AML cells. The overexpression of MS4A3 was also able to suppress miR-431-mediated inhibition of the expression of TGFβ and EMT markers in AML cells. The addition of TGFβ inhibited the downregulation of EMT markers by transfection of miR-431 in AML cells. The transfection of miR-431 suppressed the migration and invasion of AML cells, which was also abolished by the addition of TGFβ. In conclusion, the results of the present study indicated that Evi1 may be a potential molecular target of leukemia therapy via MS4A3-mediated TGFβ/EMT signaling pathway.
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Affiliation(s)
- Min Jiang
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.,Department of Pediatrics, The Fifth Hospital of Xiamen, Affiliated TongMin Hospital of Xiamen University, Xiamen, Fujian 361101, P.R. China
| | - Xueqin Zou
- Department of Internal Medicine, The First College of Clinical Medical Science, China Three Gorges University, Yichang Central People's Hospital, Yichang, Hubei 443003, P.R. China
| | - Wenhua Huang
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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Shimono J, Miyoshi H, Kiyasu J, Kamimura T, Eto T, Miyagishima T, Nagafuji K, Seto M, Teshima T, Ohshima K. Clinicopathological analysis of polyploid diffuse large B-cell lymphoma. PLoS One 2018; 13:e0194525. [PMID: 29641580 PMCID: PMC5894967 DOI: 10.1371/journal.pone.0194525] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 03/05/2018] [Indexed: 01/24/2023] Open
Abstract
Polyploid chromosomes are those with more than two sets of homologous chromosomes. Polyploid chromosomal abnormalities are observed in various malignant tumors. The prognosis in such cases is generally poor. However, there are no studies examining the prognosis of diffuse large B-cell lymphoma (DLBCL) with polyploid chromosomal abnormalities. Therefore, we statistically compared the clinicopathological features between polyploid DLBCL and DLBCL without polyploid abnormalities. Herein, 51 polyploid DLBCL and 53 control (without polyploid chromosomal abnormalities) cases were examined. G-banding method was employed to define polyploidy by cytogenetic analysis. Subsequently, flow cytometric immunophenotyping and immunohistochemical staining were performed. Polyploid DLBCL was defined as DLBCL with either near-tetraploid or greater number of chromosomes, as detected by the G-band. In a survival analysis, a significantly worse overall survival (OS) was observed for polyploid DLBCL (p = 0.04; p = 0.02 in cases who received R-CHOP regimens). In a multivariate analysis of OS, polyploid chromosomal abnormalities were an independent prognostic factor. Our results suggest that polyploid chromosomal abnormalities detected through G-band may represent a new poor prognostic factor for DLBCL.
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Affiliation(s)
- Joji Shimono
- Department of Pathology, Kurume University, School of Medicine, Kurume, Japan.,Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Hiroaki Miyoshi
- Department of Pathology, Kurume University, School of Medicine, Kurume, Japan
| | - Junichi Kiyasu
- Department of Hematology, Iizuka hospital, Iizuka, Japan
| | | | - Tetsuya Eto
- Department of Hematology, Hamanomachi Hospital, Fukuoka, Japan
| | | | - Koji Nagafuji
- Department of Hematology, Kurume University, School of Medicine, Kurume, Japan
| | - Masao Seto
- Department of Pathology, Kurume University, School of Medicine, Kurume, Japan
| | - Takanori Teshima
- Department of Hematology, Hokkaido University Faculty of Medicine, Sapporo, Japan
| | - Koichi Ohshima
- Department of Pathology, Kurume University, School of Medicine, Kurume, Japan
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12
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Takahashi T, Ishiguro K, Maruyama Y, Kazama T, Takamura T, Itoh H, Yoshimoto M, Tsujisaki M, Ohba G. Near Tetraploidy Acute Myeloid Leukemia in Long-term Remission with Persistent Clonal Hematopoiesis with del(20)(q12q13). Intern Med 2017. [PMID: 29093395 DOI: 10.2169/internalmedicine.9122-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Patients with near tetraploidy/tetraploidy (NT/T)-acute myeloid leukemia (AML) are rare and generally show poor survival. A 62-year-old man was referred to our hospital with pancytopenia. A bone marrow examination revealed the proliferation of extremely large blasts, and led to the diagnosis of AML M0. A cytogenetic analysis showed an NT-karyotype of 91, XXYY, -5, add(18)(p21),del(20)(q12q13) ×2. Complete remission was achieved with single remission induction chemotherapy. Although consolidation chemotherapies were not available because of his critical condition, he remained in remission and survived for more than 40 months without cytopenia. However, repeated bone marrow examinations showed persistent clonal hematopoiesis with del(20)(q12q13) without apparent myelodysplasia.
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Affiliation(s)
| | | | | | - Tomoe Kazama
- Department of Gastroenterology, Tenshi Hospital, Japan
| | | | - Hideto Itoh
- Department of Gastroenterology, Tenshi Hospital, Japan
| | | | | | - Go Ohba
- Department of Surgery, Tenshi Hospital, Japan
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