1
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Miyoshi I, Mori M, Yamasaki I, Daibata M. Is There an Entity of Radiation-Induced Chronic Myeloid Leukemia? Report of a Case and Brief Review of the Literature. J Clin Exp Hematop 2021; 60:24-25. [PMID: 32224562 PMCID: PMC7187678 DOI: 10.3960/jslrt.19044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Isao Miyoshi
- Department of Internal Medicine, Tosatamura Hospital, Kochi, Japan
| | - Masakazu Mori
- Department of Hematology, Kochi Medical School, Kochi University, Nankoku, Japan
| | - Ichiro Yamasaki
- Department of Urology, Kochi Medical School, Kochi University, Nankoku, Japan
| | - Masanori Daibata
- Department of Microbiology and Infection, Kochi Medical School, Kochi University, Nankoku, Japan
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2
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Isono K, Takahashi E, Miyoshi I, Tsuneto M, Hikosaka-Kuniishi M, Yamane T, Yamazaki H. Simultaneous Fluorescent Identification of Odontoblasts and Ameloblasts. J Dent Res 2020; 100:532-541. [PMID: 33289448 DOI: 10.1177/0022034520974576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The tooth is mainly composed of dentin and enamel. Identification of dentin-producing odontoblasts and enamel-producing ameloblasts using reporter techniques is useful to study tooth development and regeneration with tissue engineering. Ameloblasts express Amelogenin, Ameloblastin, Enamelin, and Amelotin, whereas odontoblasts express Dentin sialophosphoprotein (Dspp) and Dentin matrix protein1 (Dmp1). Although there are several transgenic lines using promoter elements or bacterial artificial chromosomes (BACs) to label odontoblasts and ameloblasts, there is a possibility that the expression patterns vary from the endogenous genes. Here, we established 2 lines of mice where tdTomato was knocked into the second exon of X-chromosomal Amelogenin (Amelx), and green fluorescent protein (GFP) was knocked into the second exon of Dspp. tdTomato and GFP were highly expressed on secretory ameloblasts and secretory and fully differentiated odontoblasts, respectively. In addition, DSPP and AMELX were not produced in the dentin matrix and enamel matrix of DsppGFP/GFP and AmelxtdTomato male mice (as representative of AmelxtdTomato/Y hemizygous male mice), respectively. Moreover, micro-computed tomography analysis of AmelxtdTomato male mice revealed a notable reduction in enamel volume but increased dentin mineral density. DsppGFP/GFP mice had reduced dentin mineral density. To identify odontoblasts and ameloblasts from developing tooth, we examined the expression of mesenchymal cell surface molecules CD90, CD166 and epithelial cell surface molecules CD49f, Epcam1 with fluorescence on odontoblasts and ameloblasts in these mice. We found that GFP+ odontoblasts and tdTomato+ ameloblasts in tooth germ from 0.5-d-old DsppGFP/+ mice and AmelxtdTomato male mice were enriched in CD45-/Ter119-/Epcam1-/CD90+/Integrin α4+cell fractions and CD45-/Ter119-/Epcam1+/CD49f+/CD147+ cell fractions, respectively. By using antibodies against mesenchymal and epithelial cell surface molecules and fluorescence, we can easily distinguish odontoblasts from ameloblasts and isolate each cell for further studies. These mice would serve as useful models for tooth development and regeneration as well as provide concurrent observation for the differentiation processes of odontoblasts and ameloblasts in vivo and in vitro.
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Affiliation(s)
- K Isono
- Department of Stem Cells and Developmental Biology, Division of Fundamental Medicine, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - E Takahashi
- Support Unit for Animal Resources Development, Research Resources Division, RIKEN Center for Brain Science, Wako-shi, Saitama, Japan
| | - I Miyoshi
- Department of Laboratory Animal Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - M Tsuneto
- Division of Regenerative Medicine and Therapeutics, Department of Genetic Medicine and Regenerative Therapeutics, Tottori University Graduate School of Medical Science, Yonago, Tottori, Japan
| | - M Hikosaka-Kuniishi
- Department of Stem Cells and Developmental Biology, Division of Fundamental Medicine, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - T Yamane
- Department of Stem Cells and Developmental Biology, Division of Fundamental Medicine, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - H Yamazaki
- Department of Stem Cells and Developmental Biology, Division of Fundamental Medicine, Mie University Graduate School of Medicine, Tsu, Mie, Japan
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Niiya K, Takeuchi T, Kobayashi M, Miyoshi I, Hayashi T, Sakuragawa N. Dexamethasone and Phorbol Ester, but not Cytokines, Increase the Production of Plasminogen Activator Inhibitor Type-2 in the PL-21 Human Promyelocytic Leukemia Cell Line. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1646396] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryPL-21 is a promyelocytic leukemia cell line that produces plasminogen activator inhibitor 2 (PAI-2). Differentiation-linked expression of PAI-2 was investigated by adding cell-differentiation promoting agents [such as phorbol myristate acetate (PMA), retinoic acid (RA), dexamethasone (Dex), and recombinant cytokines, including tumor necrosis factor-α (TNF-a), transforming growth factor-β (TGF-β), granulocyte-colony stimulating factor (G-CSF), and interleukin-6 (IL-6)] into the culture medium of PL-21 cells. PAI-1 and PAI-2 antigens were measured by an enzyme-linked immunoassay. The PAI-1 antigen, however, became detectable only after stimulation. The presence of PAI-2 antigen was further verified by immunoblotting using a monoclonal antibody against PAI-2 purified from a PL-21 culture medium. PAI activity both in the culture medium and in the cell lysate increased approximately 70-fold after exposure to PMA. Both PAI-1 and PAI-2 antigens increased, but the amount of the latter in the culture medium and in the cell lysate was approximately 10 times and 2,500 times, as much, respectively, as that of the former. Dex also increased the intracellular PAI activity approximately 6-fold, parallel with PAI-2 antigen. PAI-1 antigen increased only slightly in the culture medium but not in the cell lysate after Dex-stimulation. As with the case of PMA, TNF-a and IL-6 induced PL-21 cells to macrophage-like cells, but did not affect the PAI activity. Thus, the increase of the PAI-2 production by PMA may not necessarily depend on differentiation into macrophages. Other cytokines examined did not increase the PAI activity. Glucocorticoid has various effects on the fibrinolytic system because it has been also shown that the mRNA of PAI-2 in a human fibrosarcoma cell line decreases in response to Dex.
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Affiliation(s)
- Kenji Niiya
- The Department of Clinical Laboratory Medicine, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama
| | | | | | - Isao Miyoshi
- Department of Medicine, Kochi Medical School, Kochi, Japan
| | - Tomohiro Hayashi
- The Department of Clinical Laboratory Medicine, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama
| | - Nobuo Sakuragawa
- The Department of Clinical Laboratory Medicine, Faculty of Medicine, Toyama Medical and Pharmaceutical University, Toyama
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4
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Niiya K, Mitani M, Taguchi H, Hirose S, Yamato K, Fujishita M, Yoshimoto S, Kubonishi I, Miyoshi I. Hypercoagulable State Induced by Combination Chemotherapy in Patients with Acute Leukemia. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1661116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Kenji Niiya
- Department of Internal Medicine, Kochi Medical School, Okocho, Nankoku, Kochi 781-51, Japan
| | - Masaaki Mitani
- Department of Internal Medicine, Kochi Medical School, Okocho, Nankoku, Kochi 781-51, Japan
| | - Hirokuni Taguchi
- Department of Internal Medicine, Kochi Medical School, Okocho, Nankoku, Kochi 781-51, Japan
| | - Shohzo Hirose
- Department of Internal Medicine, Kochi Medical School, Okocho, Nankoku, Kochi 781-51, Japan
| | - Kenji Yamato
- Department of Internal Medicine, Kochi Medical School, Okocho, Nankoku, Kochi 781-51, Japan
| | - Masatoshi Fujishita
- Department of Internal Medicine, Kochi Medical School, Okocho, Nankoku, Kochi 781-51, Japan
| | - Shizuo Yoshimoto
- Department of Internal Medicine, Kochi Medical School, Okocho, Nankoku, Kochi 781-51, Japan
| | - Ichiro Kubonishi
- Department of Internal Medicine, Kochi Medical School, Okocho, Nankoku, Kochi 781-51, Japan
| | - Isao Miyoshi
- Department of Internal Medicine, Kochi Medical School, Okocho, Nankoku, Kochi 781-51, Japan
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5
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Takeuchi T, Niiya K, Kubonishi I, Miyoshi I. A Plasminogen Activator Inhibitor-2 from a Promyelocytic Leukemia Cell Line, PL-21, Binds to the Carboxy-Terminal Chain of Plasminogen Activators. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1645205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryA promyelocytic leukemia cell line, PL-21, was found to produce an inhibitor of plasminogen activators (PAI). The PAI reacted to anti-PAl-2 but not anti-PAI-1 anti-serum and had an apparent molecular weight of 43 kDa on unreduced SDS-PAGE. The PAI inhibited not only urokinase-type plasminogen activator (u-PA) but single- and two-chain tissue-type plasminogen activators (t-PAs) on plasminogen-containing fibrin plate. It formed SDS-stable complexes with both t-PA and u-PA but not with prourokinase as demonstrated by both fibrin zymography and immunoblotting using anti-PA and anti-PAI-2 antisera after SDS-PAGE. These complexes were still present even after reduction with dithiothreitol. The PAI appears to bind to the carboxy-terminal chain of both PAs, because the part of the band corresponding to the carboxy-terminal chain of PAs moved to an upper position as a result of complex formation when two-chain form of PAs were incubated with the PAI and analyzed by SDS-PAGE followed by immunoblotting
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Affiliation(s)
- Tetsuo Takeuchi
- The Department of Medicine, Kochi Medical School, Kochi, Japan
| | - Kenji Niiya
- The Department of Medicine, Kochi Medical School, Kochi, Japan
| | | | - Isao Miyoshi
- The Department of Medicine, Kochi Medical School, Kochi, Japan
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6
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Nukuzuma S, Kameoka M, Sugiura S, Nakamichi K, Nukuzuma C, Miyoshi I, Takegami T. Exogenous human immunodeficiency virus-1 protein, tat, enhances replication of JC virus efficiently in neuroblastoma cell lines. J Med Virol 2012; 84:555-61. [DOI: 10.1002/jmv.23239] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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7
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Nukuzuma S, Nakamichi K, Kameoka M, Sugiura S, Nukuzuma C, Miyoshi I, Takegami T. Efficient propagation of progressive multifocal leukoencephalopathy-type JC virus in COS-7-derived cell lines stably expressing Tat protein of human immunodeficiency virus type 1. Microbiol Immunol 2010; 54:758-62. [PMID: 21223365 DOI: 10.1111/j.1348-0421.2010.00278.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The high incidence of progressive multifocal leukoencephalopathy (PML) in AIDS patients compared with many other immunosuppressive diseases suggests that HIV-1 infection is strictly related to the activation of JC virus (JCV) propagation. In this report, propagation of PML-type JCV in COS-7-derived cell lines stably expressing HIV-1 Tat (COS-tat cells) has been examined. In COS-tat cells, production of viral particles and replication of genomic DNA were markedly increased compared to COS-7 cells, as judged by HA and real-time PCR analyses. These results demonstrate that COS-tat cells provide a useful model system for studying HIV-1 Tat-mediated propagation of PML-type JCV.
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Affiliation(s)
- Souichi Nukuzuma
- Department of Microbiology, Kobe Institute of Health, Minatojima-Nakamachi, Kobe, Hyogo, Japan.
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8
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Nukuzuma S, Kameoka M, Sugiura S, Nakamichi K, Nukuzuma C, Miyoshi I, Takegami T. Archetype JC virus efficiently propagates in kidney-derived cells stably expressing HIV-1 Tat. Microbiol Immunol 2009; 53:621-8. [PMID: 19903262 DOI: 10.1111/j.1348-0421.2009.00166.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Pathogenic JCV with rearranged regulatory regions (PML-type) causes PML, a demyelinating disease, in the brains of immunocompromised patients. On the other hand, archetype JCV persistently infecting the kidney is thought to be converted to PML-type virus during JCV replication in the infected host under immunosuppressed conditions. In addition, Tat protein, encoded by HIV-1, markedly enhances the expression of a reporter gene under control of the JCV late promoter. In order to examine the influence of Tat on JCV propagation, we used kidney-derived COS-7 cells, which only permit archetype JCV, and established COS-tat cells, which express HIV-1 Tat stably. We found that the extent of archetype JCV propagation in COS-tat cells is significantly greater than in COS-7 cells. On the other hand, COS-7 cells express SV40 T antigen, which is a strong stimulator of archetype JCV replication. The expression of SV40 T antigen was enhanced by HIV-1 Tat slightly according to real-time RT-PCR, this was not closely related to JCV replication in COS-tat cells. The efficiency of JCV propagation depended on the extent of expression of functional Tat. To our knowledge, this is the first report of increased production of archetype JCV in a culture system using cell lines stably expressing HIV-1 Tat. We propose here that COS-tat cells are a useful tool for studying the role of Tat in archetype JCV replication in the development of PML.
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Affiliation(s)
- Souichi Nukuzuma
- Department of Microbiology, Kobe Institute of Health, 4-6, Minatojima-Nakamachi, Chuo-ku, Kobe, Hyogo 650-0046, Japan.
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10
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Ohtsuki Y, Daibata M, Bandobashi K, Lee GH, Furihata M, Yokoyama A, Miyoshi I. Ultrastructural study of the morphogenesis of human herpesvirus 6 type B in human T-lymphotropic virus type I-producing lymphoid cells. Med Mol Morphol 2008; 41:204-10. [PMID: 19107610 DOI: 10.1007/s00795-008-0413-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2008] [Accepted: 07/23/2008] [Indexed: 12/17/2022]
Abstract
A few studies of the morphogenesis of human herpesvirus (HHV) 6 type A and B (HHV-6A, -6B) have been performed using neurogenic, lymphoid, or epithelial cells. When human MT-4 T-lymphotropic virus type I (HTLV-I)-producing lymphoid cells were coinfected with HHV-6B in vitro, viral-specific proteins were clearly detected. We therefore attempted to detect virus particles at the ultrastructural level, focusing on the morphogenesis of such particles. Ultrastructurally, HHV-6B virus particles could be observed in the nuclei, cytoplasm, and extracellular spaces of MT-4 cells, in addition to extracellular HTLV-I particles of C type. In the nuclei, dense-cored or doughnut-shaped viral capsids were found, as well as peculiar tubular rods. When budding to perinuclear spaces, these intranuclear capsids exhibited a thin tegument on their surfaces. Distinct teguments were found in the intracytoplasmic particles, which budded into cytoplasmic vacuoles during the process of maturation. The mature particles were detected in the extracellular spaces and the intracytoplasmic vacuoles, with a distinct tegument and surface spikes. An electron-dense layer in the outer part of the tegument was found in some mature particles located in the extracellular space, but no such layer was detected in mature particles in intracytoplasmic vacuoles. No annulate lamellae, but intranuclear tubular rods, were found in the cytoplasm of MT-4 cells. These observations indicate that HHV-6B in MT-4 cells is similar to HHV-6A in fine structure, but differs from HHV-7 and HHV-8 in ultrastructural characteristics. Further comparisons of HHV-6B with HHV-6A, HHV-7, and HHV-8 are needed with regard to functional activity.
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Affiliation(s)
- Yuji Ohtsuki
- Division of Pathology, Matsuyama-shimin Hospital, Matsuyama, Ehime, 790-0067, Japan.
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11
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Kuroda N, Mizobuchi M, Shimamura Y, Taniguchi Y, Daibata M, Miyoshi I, Ichimura T, Beppu H, Ohara M, Hirouchi T, Mizuno K, Lee GH. An Asian variant of intravascular lymphoma: unique clinical and pathological manifestation in the gallbladder. APMIS 2007; 115:371-5. [PMID: 17504306 DOI: 10.1111/j.1600-0463.2007.apm_578.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [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: 11/28/2022]
Abstract
We here present a rare case of intravascular lymphoma (IVL) in a Japanese man. 4 months after cholecystectomy due to cholecystitis, a diagnosis of intravascular lymphoma (IVL) was strongly suspected. Lymphoma cells were diffusely observed in the bone marrow parenchyma, but were absent in the vascular spaces. The patient died of respiratory failure and at autopsy a small number of lymphoma cells in the extravascular parenchyma of the adrenal gland and bone marrow were seen. Serial sections of the surgically resected gallbladder retrospectively confirmed the diagnosis of IVL. In addition, congestion and edema were observed in the connective tissue layer. It is possible that edema or ischemia in the gallbladder wall or at other anatomic sites due to the circulation disturbance induced by the intravascular obstruction of lymphoma cells may have caused the initial symptoms. In conclusion, clinicians and pathologists should keep in mind that the gallbladder may be initially involved in IVL.
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Affiliation(s)
- N Kuroda
- Department of Pathology and Laboratory Medicine, Kochi Red Cross Hospital, Kochi, Japan.
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12
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Gu TL, Mercher T, Tyner JW, Goss VL, Walters DK, Cornejo MG, Reeves C, Popova L, Lee K, Heinrich MC, Rush J, Daibata M, Miyoshi I, Gilliland DG, Druker BJ, Polakiewicz RD. A novel fusion of RBM6 to CSF1R in acute megakaryoblastic leukemia. Blood 2007; 110:323-33. [PMID: 17360941 PMCID: PMC1896120 DOI: 10.1182/blood-2006-10-052282] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [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] [Indexed: 12/21/2022] Open
Abstract
Activated tyrosine kinases have been frequently implicated in the pathogenesis of cancer, including acute myeloid leukemia (AML), and are validated targets for therapeutic intervention with small-molecule kinase inhibitors. To identify novel activated tyrosine kinases in AML, we used a discovery platform consisting of immunoaffinity profiling coupled to mass spectrometry that identifies large numbers of tyrosine-phosphorylated proteins, including active kinases. This method revealed the presence of an activated colony-stimulating factor 1 receptor (CSF1R) kinase in the acute megakaryoblastic leukemia (AMKL) cell line MKPL-1. Further studies using siRNA and a small-molecule inhibitor showed that CSF1R is essential for the growth and survival of MKPL-1 cells. DNA sequence analysis of cDNA generated by 5'RACE from CSF1R coding sequences identified a novel fusion of the RNA binding motif 6 (RBM6) gene to CSF1R gene generated presumably by a t(3;5)(p21;q33) translocation. Expression of the RBM6-CSF1R fusion protein conferred interleukin-3 (IL-3)-independent growth in BaF3 cells, and induces a myeloid proliferative disease (MPD) with features of megakaryoblastic leukemia in a murine transplant model. These findings identify a novel potential therapeutic target in leukemogenesis, and demonstrate the utility of phosphoproteomic strategies for discovery of tyrosine kinase alleles.
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MESH Headings
- Animals
- Cell Line
- Cell Line, Tumor
- Cell Proliferation
- Cell Survival
- Chromosomes, Human, Pair 3
- Chromosomes, Human, Pair 5
- Humans
- Leukemia, Megakaryoblastic, Acute/etiology
- Leukemia, Megakaryoblastic, Acute/genetics
- Mice
- Neoplasm Transplantation
- Oncogene Proteins, Fusion/genetics
- Oncogene Proteins, Fusion/isolation & purification
- Oncogene Proteins, Fusion/physiology
- Protein-Tyrosine Kinases/isolation & purification
- RNA-Binding Proteins/genetics
- Receptor, Macrophage Colony-Stimulating Factor/genetics
- Receptor, Macrophage Colony-Stimulating Factor/isolation & purification
- Sequence Analysis, DNA
- Translocation, Genetic
- Transplantation, Heterologous
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Affiliation(s)
- Ting-lei Gu
- Cell Signaling Technology, Danvers, MA 01923, USA
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13
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Kuroda N, Mizobuchi M, Shimamura Y, Daibata M, Miyoshi I, Ohara M, Hirouchi T, Mizuno K, Lee GH. Bridging necrosis and reticulin bridging fibrosis induced by intrahepatic involvement of acute biphenotypic leukemia. APMIS 2007; 114:908-11. [PMID: 17207092 DOI: 10.1111/j.1600-0463.2006.apm_540.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/30/2022]
Abstract
A 47-year-old Japanese woman was diagnosed as having acute biphenotypic leukemia with association of t(9;22)(q34;q11). Cholestatic liver dysfunction arose, and she died of cachexia and intracranial hemorrhage. Autopsy showed unusual hepatic fibrosis. In the liver, bridging infiltration, bridging necrosis and bridging fibrosis by leukemic cells were seen. It seemed that the degree of fibrosis was associated with the number of aggregates of infiltrating leukemic cells. The fibrotic foci were predominantly composed of reticulin and collagen fibers, and distortion of the lobules was observed. Immunohistochemically, dense bundles of alpha-smooth muscle actin (ASMA)-positive stromal cells, namely activated hepatic stellate cells (HSCs), were observed in the immature fibrotic foci as well as along the sinusoids densely infiltrated by leukemic cells. No cells positive for TGF-beta1 or PDGF-BB were identified. In conclusion, extensive intrahepatic involvement by neoplastic cells in adult acute biphenotypic leukemia may cause the unusual "disorganized" hepatic fibrosis.
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Affiliation(s)
- N Kuroda
- Department of Pathology and Laboratory Medicine, Kochi Red Cross Hospital, Kochi City, Kochi, Japan.
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14
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine
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15
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine, Kochi, Japan
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16
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine
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17
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine
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18
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine
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19
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi Medical School, Kochi, Japan
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20
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine, Kochi
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21
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine, Kochi, Japan
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22
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Miyoshi I, Daibata M, Saito T, Ohtsuki Y, Taguchi H. Bence Jones myeloma cells with crystalline inclusions. Intern Med 2006; 45:337-8. [PMID: 16596009 DOI: 10.2169/internalmedicine.45.1660] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine
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23
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine
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24
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine, Kochi
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25
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine, Kochi
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26
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine, Kochi
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Miyoshi I, Daibata M, Saito T, Mitsuoka T, Kuroda N, Ohtsuki Y, Taguchi H. Nasal T-cell lymphoma. Intern Med 2006; 45:569-70. [PMID: 16702756 DOI: 10.2169/internalmedicine.45.1738] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine
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Affiliation(s)
- Tsuyako Saito
- Department of Medicine, Kochi University School of Medicine, Kochi
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29
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Affiliation(s)
- I Miyoshi
- Department of Medicine, Kochi University School of Medicine, Kochi, Japan
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30
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Affiliation(s)
- Isao Miyoshi
- Department of Hematology and Respiratory Medicine, Kochi University School of Medicine, Japan
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31
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Affiliation(s)
- I Miyoshi
- Department of Medicine, Kochi University School of Medicine, Japan
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Miyoshi I, Daibata M, Taguchi H. Chronic disseminated intravascular coagulation associated with abdominal aortic aneurysm. Intern Med 2005; 44:771. [PMID: 16093609 DOI: 10.2169/internalmedicine.44.771] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Isao Miyoshi
- Department of Hematology and Respiratory Medicine, Kochi University School of Medicine, Kochi
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Daibata M, Bandobashi K, Kuroda M, Imai S, Miyoshi I, Taguchi H. Induction of lytic Epstein-Barr virus (EBV) infection by synergistic action of rituximab and dexamethasone renders EBV-positive lymphoma cells more susceptible to ganciclovir cytotoxicity in vitro and in vivo. J Virol 2005; 79:5875-9. [PMID: 15827204 PMCID: PMC1082780 DOI: 10.1128/jvi.79.9.5875-5879.2005] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [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: 01/21/2023] Open
Abstract
The purposeful induction of the lytic form of Epstein-Barr virus (EBV) infection combined with ganciclovir (GCV) treatment has been advocated as a novel strategy for EBV-positive B-cell lymphoma. We demonstrated that rituximab had a synergistic effect with dexamethasone on induction of the lytic EBV infection in CD20-positive lymphoma cells. Addition of GCV to the dexamethasone/rituximab-treated cells was more effective than dexamethasone/rituximab alone in killing EBV-positive lymphoma cells in vitro and in lymphoma-bearing nude mice but not in EBV-negative cells. These data suggest that induction of the lytic EBV infection with dexamethasone/rituximab in combination with GCV could be a potential virally targeted therapy for EBV-associated B-cell lymphoma.
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Affiliation(s)
- Masanori Daibata
- Department of Hematology and Respiratory Medicine, Kochi Medical School, Kochi University, Kochi 783-8505, Japan.
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Abstract
A 61-year-old woman was admitted with fever and headache of 10-day duration. She was found to have anemia, jaundice, and signs of meningitis. The erythrocyte sedimentation rate was increased and the tuberculin skin test was positive. A provisional diagnosis of miliary tuberculosis was made and antituberculous therapy was started, although no miliary lesions were seen on chest radiography. However, her condition rapidly deteriorated with diffuse opacification of both lungs and she died on the 7th hospital day. Postmortem examination revealed miliary tuberculosis in several organs but not in the lungs with acute respiratory distress syndrome accounting for the lung pathology. It should be noted that on rare occasions the lungs may not be involved by miliary tuberculosis.
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Affiliation(s)
- Isao Miyoshi
- Department of Hematology and Respiratory Medicine, Kochi University School of Medicine
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Affiliation(s)
- Isao Miyoshi
- Department of Hematology and Respiratory Medicine, Kochi University School of Meicine
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Affiliation(s)
- Isao Miyoshi
- Department of Hematology and Respiratory Medicine, Kochi University School of Medicine, Japan
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Affiliation(s)
- Masanori Daibata
- Department of Hematology and Respiratory Medicine, Kochi Medical School, Kochi University, Kochi
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Daibata M, Miyoshi I, Taguchi H, Matsubara H, Date H, Shimizu N, Ohtsuki Y. Absence of human herpesvirus 8 in lung tissues from Japanese patients with primary pulmonary hypertension. Respir Med 2004; 98:1231-2. [PMID: 15588046 DOI: 10.1016/j.rmed.2004.07.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Masanori Daibata
- Department of Hematology and Respiratory Medicine, Kochi Medical School, Kochi University, Kohasu, Okoh-cho, Nankoku, Kochi 783 8505, Japan.
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Miyoshi I, Uemura Y, Taguchi H, Sugimoto T. Acute lymphoblastic leukaemia relapsing with solid hepatic tumours after bone marrow transplantation. Br J Haematol 2004; 127:372. [PMID: 15521912 DOI: 10.1111/j.1365-2141.2004.05183.x] [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] [Indexed: 11/29/2022]
Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine, Kochi, Japan
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40
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French CA, Kutok JL, Faquin WC, Toretsky JA, Antonescu CR, Griffin CA, Nose V, Vargas SO, Moschovi M, Tzortzatou-Stathopoulou F, Miyoshi I, Perez-Atayde AR, Aster JC, Fletcher JA. Midline Carcinoma of Children and Young Adults With NUT Rearrangement. J Clin Oncol 2004; 22:4135-9. [PMID: 15483023 DOI: 10.1200/jco.2004.02.107] [Citation(s) in RCA: 280] [Impact Index Per Article: 14.0] [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] [Indexed: 12/30/2022] Open
Abstract
Purpose A balanced chromosomal translocation, t(15;19), resulting in the BRD4-NUT oncogene, has been identified in a lethal carcinoma of young people, a disease described primarily in case reports. We sought to amass a more definitive series of tumors with NUT and/or BRD4 gene rearrangements and to determine distinct clinicopathologic features. Patients and Methods Carcinomas (N = 98) in young individuals (median age, 32.5 years) were screened for NUT and BRD4 rearrangements using dual-color fluorescence in situ hybridization. Four published carcinomas with BRD4 and NUT rearrangements were also evaluated. Immunophenotypic analyses were performed. Results Eleven tumors had NUT gene rearrangements, including eight with BRD4-NUT fusions and three with novel rearrangements, which were designated as NUT variant. All NUT-rearranged carcinomas (NRCs) arose from midline epithelial structures, including the first example arising below the diaphragm. Patients were young (median age, 17.6 years). Squamous differentiation (seen in 82% of NRCs) was particularly striking in NUT-variant cases. In this first description of NUT-variant carcinomas, the average survival (96 weeks, n = 3) was longer than for BRD4-NUT carcinomas (28 weeks, n = 8). Strong CD34 expression was found in six of 11 NRCs but in zero of 45 NUT wild-type carcinomas. Conclusion NRCs arise from midline structures in young people, and NRCs with BRD4-NUT are highly lethal, despite intensive therapies. NUT-variant carcinomas might have a less fulminant clinical course than those with BRD4-NUT fusions. CD34 expression is characteristic in NRCs and, therefore, holds promise as a diagnostic test for this distinctive clinicopathologic entity.
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MESH Headings
- Adolescent
- Adult
- Aged
- Antigens, CD34/analysis
- Carcinoma, Squamous Cell
- Cell Cycle Proteins
- Child
- Child, Preschool
- Chromosomes, Human, Pair 15
- Chromosomes, Human, Pair 19
- Female
- Humans
- In Situ Hybridization, Fluorescence
- Infant
- Infant, Newborn
- Male
- Middle Aged
- Neoplasms/genetics
- Nuclear Proteins
- Oncogene Proteins, Fusion/analysis
- Oncogene Proteins, Fusion/genetics
- Survival Rate
- Transcription Factors
- Translocation, Genetic
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Affiliation(s)
- Christopher A French
- Department of Pathology, Brigham and Women's Hospital, 75 Francis St, Boston, MA 02115, USA.
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Miyoshi I, Saito T, Uemura Y, Ohtsuki Y, Taguchi H. Circulating macroglobulinemia cells. Intern Med 2004; 43:766-7. [PMID: 15468987 DOI: 10.2169/internalmedicine.43.766] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Isao Miyoshi
- Third Department of Internal Medicine, Kochi University School of Medicine
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Affiliation(s)
- Isao Miyoshi
- Third Departmentof Internal Medicine, Kochi University School of Medicine, Kochi 783-8505
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Miyoshi I, Saito T, Taguchi H. Iron deficiency anemia due to repeated blood donations. Intern Med 2004; 43:768. [PMID: 15468988 DOI: 10.2169/internalmedicine.43.768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Affiliation(s)
- Isao Miyoshi
- The Third Department of Internal Medicine, Kochi University School of Medicine
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi University School of Medicine, Kochi, Japan
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi Medical School, Kochi 783-8505, Japan
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Affiliation(s)
- Isao Miyoshi
- Department of Medicine, Kochi Medical School, Kochi 738-8505, Japan
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Affiliation(s)
- Tsuyako Saito
- Department of Medicine, Kochi Medical School, Kochi, Japan.
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Tozaki M, Suzuki M, Takeda H, Tai H, Asakura J, Miyoshi I, Katou H, Fukunaga M, Naruo K, Fukuda Y. [Three-dimensional dynamic MR imaging with a volumetric interpolated breath-hold examination for solitary pulmonary lesions: correlation of contrast enhancement pattern with pathological features]. Nihon Igaku Hoshasen Gakkai Zasshi 2004; 64:13-21. [PMID: 14994506] [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] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
PURPOSE To evaluate the clinical feasibility of dynamic MR imaging of solitary pulmonary lesions (SPLs) using a fat-suppressed three-dimensional gradient-echo technique with a volumetric interpolated breath-hold examination (VIBE). Correlation between the enhancement pattern and the histological characteristics of the nodules was also assessed. MATERIALS AND METHODS Dynamic 3D-VIBE was performed in 16 patients with pathologically proven SPLs. Each lesion was analyzed for its internal enhancement pattern, dynamic enhancement pattern, and peripheral enhancement (PE). RESULTS A heterogeneous pattern of internal enhancement was well correlated with histological observation of necrosis, cystic changes, and variously sized air spaces. The washout pattern was seen in the medullary parts of the nodules with little fibrous stroma. The progressive pattern was seen at foci of collapse in the alveolar structure, central scars, and prominent fibrosis. PE was also seen in 6 malignant lesions (43%), and was well correlated with the medullary growth of adenocarcinoma and marginal fibrosis with lymphocytic infiltration of squamous cell carcinoma. The presence of PE was statistically significantly related with tumor size (p < 0.05). CONCLUSION Dynamic 3D-VIBE allows assessment of the histological characteristics of SPLs. It is also thought that this technique may be a promising method for differentiation between benign and malignant lesions.
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Affiliation(s)
- Mitsuhiro Tozaki
- Department of Radiology, Daisan Hospital, Jikei University School of Medicine
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