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  1. Article ; Online: Chronic lymphocytic leukemia transdifferentiated to blastic neoplasm with T/plasmacytoid dendritic cell immunophenotype.

    Argyropoulos, Kimon V / Aypar, Umut / Ewalt, Mark D / Roshal, Mikhail / Dogan, Ahmet / Sen, Filiz

    Leukemia & lymphoma

    2023  Volume 64, Issue 3, Page(s) 734–737

    MeSH term(s) Humans ; Leukemia, Lymphocytic, Chronic, B-Cell/diagnosis ; Hematologic Neoplasms/genetics ; Leukocytes ; Dendritic Cells ; Skin Neoplasms
    Language English
    Publishing date 2023-02-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1042374-6
    ISSN 1029-2403 ; 1042-8194
    ISSN (online) 1029-2403
    ISSN 1042-8194
    DOI 10.1080/10428194.2022.2161819
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Cytological features of NUT-carcinoma harbouring an NSD3-NUTM1 fusion.

    Argyropoulos, Kimon V / Lin, Lawrence Hsu / Moreira, Andre L / Krock, Bryan / Simsir, Aylin / Brandler, Tamar C

    Cytopathology : official journal of the British Society for Clinical Cytology

    2022  Volume 33, Issue 4, Page(s) 540–543

    MeSH term(s) Carcinoma ; Humans ; Oncogene Proteins, Fusion/genetics ; Transcription Factors
    Chemical Substances Oncogene Proteins, Fusion ; Transcription Factors
    Language English
    Publishing date 2022-04-04
    Publishing country England
    Document type Case Reports
    ZDB-ID 1034190-0
    ISSN 1365-2303 ; 0956-5507 ; 1350-4037
    ISSN (online) 1365-2303
    ISSN 0956-5507 ; 1350-4037
    DOI 10.1111/cyt.13120
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: First-Generation and Second-Generation Bruton Tyrosine Kinase Inhibitors in Waldenström Macroglobulinemia.

    Argyropoulos, Kimon V / Palomba, M Lia

    Hematology/oncology clinics of North America

    2018  Volume 32, Issue 5, Page(s) 853–864

    Abstract: Waldenström macroglobulinemia (WM) is an indolent B-cell lymphoma that is heavily dependent on Bruton tyrosine kinase (BTK) hyperactivation. Ibrutinib is a first-generation BTK inhibitor that has shown high activity and durable responses in patients with ...

    Abstract Waldenström macroglobulinemia (WM) is an indolent B-cell lymphoma that is heavily dependent on Bruton tyrosine kinase (BTK) hyperactivation. Ibrutinib is a first-generation BTK inhibitor that has shown high activity and durable responses in patients with relapsed/refractory WM. Newer and more selective BTK inhibitors are currently being tested in several clinical trials and are expected to address the toxicity and the acquired resistance observed in patients receiving ibrutinib. Updates on ibrutinib and second-generation BTK inhibitors are summarized in this review.
    MeSH term(s) Agammaglobulinaemia Tyrosine Kinase/antagonists & inhibitors ; Agammaglobulinaemia Tyrosine Kinase/genetics ; Agammaglobulinaemia Tyrosine Kinase/metabolism ; Drug Resistance, Neoplasm/drug effects ; Drug Resistance, Neoplasm/genetics ; Humans ; Protein Kinase Inhibitors/therapeutic use ; Pyrazoles/therapeutic use ; Pyrimidines/therapeutic use ; Waldenstrom Macroglobulinemia/drug therapy ; Waldenstrom Macroglobulinemia/enzymology ; Waldenstrom Macroglobulinemia/genetics ; Waldenstrom Macroglobulinemia/pathology
    Chemical Substances Protein Kinase Inhibitors ; Pyrazoles ; Pyrimidines ; ibrutinib (1X70OSD4VX) ; Agammaglobulinaemia Tyrosine Kinase (EC 2.7.10.2)
    Language English
    Publishing date 2018-07-19
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 93115-9
    ISSN 1558-1977 ; 0889-8588
    ISSN (online) 1558-1977
    ISSN 0889-8588
    DOI 10.1016/j.hoc.2018.05.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Integrating Ligand-Receptor Interactions and In Vitro Evolution for Streamlined Discovery of Artificial Nucleic Acid Ligands.

    Zumrut, Hasan E / Batool, Sana / Argyropoulos, Kimon V / Williams, Nicole / Azad, Roksana / Mallikaratchy, Prabodhika R

    Molecular therapy. Nucleic acids

    2019  Volume 17, Page(s) 150–163

    Abstract: To discover DNA ligands against a predetermined receptor protein complex, we introduce a comprehensive version of ligand-guided selection (LIGS). LIGS is, itself, a variant of systematic evolution of ligands by exponential enrichment (SELEX). Herein, we ... ...

    Abstract To discover DNA ligands against a predetermined receptor protein complex, we introduce a comprehensive version of ligand-guided selection (LIGS). LIGS is, itself, a variant of systematic evolution of ligands by exponential enrichment (SELEX). Herein, we have optimized LIGS to identify higher affinity aptamers with high specificity. In addition, we demonstrate the expandability of LIGS by performing specific aptamer elution at 25°C, utilizing multiple monoclonal antibodies (mAbs) against cultured cells and primary cells obtained from human donors expressing the same receptor. Eluted LIGS libraries obtained through Illumina high-throughput (HT) DNA sequencing were analyzed by bioinformatics tools to discover five DNA aptamers with apparent affinities ranging from 3.06 ± 0.485 nM to 325 ± 62.7 nM against the target, T cell receptor-cluster of differentiation epsilon (TCR-CD3ε) expressed on human T cells. The specificity of the aptamers was validated utilizing multiple strategies, including competitive binding analysis and a double-knockout Jurkat cell line generated by CRISPR technology. The cross-competition experiments using labeled and unlabeled aptamers revealed that all five aptamers compete for the same binding site. Collectively, the data in this report introduce a modified LIGS strategy as a universal platform to identify highly specific multiple aptamers toward multi-component receptor proteins in their native state without changing the cell-surface landscape.
    Language English
    Publishing date 2019-06-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2662631-7
    ISSN 2162-2531
    ISSN 2162-2531
    DOI 10.1016/j.omtn.2019.05.015
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Dimerization of an aptamer generated from Ligand-guided selection (LIGS) yields a high affinity scaffold against B-cells

    Batool, Sana / Argyropoulos, Kimon V / Azad, Roksana / Okeoma, Precious / Zumrut, Hasan / Bhandari, Sanam / Dekhang, Rigzin / Mallikaratchy, Prabodhika R

    Biochimica et biophysica acta. 2019 Jan., v. 1863, no. 1

    2019  

    Abstract: Nucleic Acid Aptamers (NAAs) are a class of synthetic DNA or RNA molecules that bind specifically to their target. We recently introduced an aptamer termed R1.2 against membrane Immunoglobulin M (mIgM) expressing B-cell neoplasms using Ligand Guided ... ...

    Abstract Nucleic Acid Aptamers (NAAs) are a class of synthetic DNA or RNA molecules that bind specifically to their target. We recently introduced an aptamer termed R1.2 against membrane Immunoglobulin M (mIgM) expressing B-cell neoplasms using Ligand Guided Selection (LIGS). While LIGS-generated aptamers are highly specific, their lower affinity prevents aptamers from being used for translational applications. Highly specific aptamers with higher affinity can increase targetability, boosting the application of aptamers as diagnostic and therapeutic molecules. Herein, we report that dimerization of R1.2, an aptamer generated from LIGS, leads to high affinity variants without compromising the specificity. Three dimeric aptamer analogues with variable linker lengths were designed to evaluate the effect of linker length in affinity. The optimized dimeric R1.2 against cultured B-cell neoplasms, four donor B-cell samples and mIgM-positive Waldenström's Macroglobulinemia (WM) showed specificity. Furthermore, confocal imaging of dimeric aptamer and anti-IgM antibody in purified B-cells suggests co-localization. Binding assays against IgM knockout Burkitt's Lymphoma cells utilizing CRISPR/Cas9 further validated specificity of dimeric R1.2. Collectively, our findings show that LIGS-generated aptamers can be re-engineered into dimeric aptamers with high specificity and affinity, demonstrating wide-range of applicability of LIGS in developing clinically practical diagnostic and therapeutic aptamers.
    Keywords B-lymphocytes ; DNA ; RNA ; antibodies ; confocal microscopy ; dimerization ; image analysis ; immunoglobulin M ; ligands ; neoplasm cells ; neoplasms ; oligonucleotides ; therapeutics
    Language English
    Dates of publication 2019-01
    Size p. 232-240.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 840755-1
    ISSN 0304-4165
    ISSN 0304-4165
    DOI 10.1016/j.bbagen.2018.10.006
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Autoimmune anti-DNA and anti-phosphatidylserine antibodies predict development of severe COVID-19.

    Gomes, Claudia / Zuniga, Marisol / Crotty, Kelly A / Qian, Kun / Tovar, Nubia Catalina / Lin, Lawrence Hsu / Argyropoulos, Kimon V / Clancy, Robert / Izmirly, Peter / Buyon, Jill / Lee, David C / Yasnot-Acosta, Maria Fernanda / Li, Huilin / Cotzia, Paolo / Rodriguez, Ana

    Life science alliance

    2021  Volume 4, Issue 11

    Abstract: High levels of autoimmune antibodies are observed in COVID-19 patients but their specific contribution to disease severity and clinical manifestations remains poorly understood. We performed a retrospective study of 115 COVID-19 hospitalized patients ... ...

    Abstract High levels of autoimmune antibodies are observed in COVID-19 patients but their specific contribution to disease severity and clinical manifestations remains poorly understood. We performed a retrospective study of 115 COVID-19 hospitalized patients with different degrees of severity to analyze the generation of autoimmune antibodies to common antigens: a lysate of erythrocytes, the lipid phosphatidylserine (PS) and DNA. High levels of IgG autoantibodies against erythrocyte lysates were observed in a large percentage (up to 36%) of patients. Anti-DNA and anti-PS antibodies determined upon hospital admission correlated strongly with later development of severe disease, showing a positive predictive value of 85.7% and 92.8%, respectively. Patients with positive values for at least one of the two autoantibodies accounted for 24% of total severe cases. Statistical analysis identified strong correlations between anti-DNA antibodies and markers of cell injury, coagulation, neutrophil levels and erythrocyte size. Anti-DNA and anti-PS autoantibodies may play an important role in the pathogenesis of COVID-19 and could be developed as predictive biomarkers for disease severity and specific clinical manifestations.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Antibodies, Antinuclear/blood ; Antibodies, Antinuclear/immunology ; Autoantibodies/blood ; Autoantibodies/immunology ; Biomarkers ; COVID-19/immunology ; COVID-19/metabolism ; DNA/chemistry ; DNA/immunology ; Erythrocytes/immunology ; Female ; Humans ; Male ; Middle Aged ; Phosphatidylserines/immunology ; Prognosis ; Retrospective Studies ; SARS-CoV-2/isolation & purification ; Severity of Illness Index
    Chemical Substances Antibodies, Antinuclear ; Autoantibodies ; Biomarkers ; Phosphatidylserines ; DNA (9007-49-2)
    Language English
    Publishing date 2021-09-09
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ISSN 2575-1077
    ISSN (online) 2575-1077
    DOI 10.26508/lsa.202101180
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Targeted genomic analysis of cutaneous T cell lymphomas identifies a subset with aggressive clinicopathological features.

    Argyropoulos, Kimon V / Pulitzer, Melissa / Maura, Francesco / Mohanty, Abhinita / Mondello, Patrizia / Horwitz, Steven M / Myskowski, Patricia / Moskowitz, Alison / Dogan, Ahmet / Querfeld, Christiane / Rapaport, Franck / Siakantaris, Marina / Louis, Peter C / Galasso, Natasha / van den Brink, Marcel R M / Palomba, M Lia

    Blood cancer journal

    2020  Volume 10, Issue 11, Page(s) 116

    MeSH term(s) Aged ; Female ; Genomics ; Humans ; Lymphoma, T-Cell, Cutaneous/genetics ; Lymphoma, T-Cell, Cutaneous/metabolism ; Lymphoma, T-Cell, Cutaneous/pathology ; Male ; Middle Aged ; Skin Neoplasms/genetics ; Skin Neoplasms/metabolism ; Skin Neoplasms/pathology
    Language English
    Publishing date 2020-11-09
    Publishing country United States
    Document type Letter ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2600560-8
    ISSN 2044-5385 ; 2044-5385
    ISSN (online) 2044-5385
    ISSN 2044-5385
    DOI 10.1038/s41408-020-00380-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: WITHDRAWN: ASSOCIATION OF INITIAL VIRAL LOAD IN SARS-CoV-2 PATIENTS WITH OUTCOME AND SYMPTOMS.

    Argyropoulos, Kimon V / Serrano, Antonio / Hu, Jiyuan / Black, Margaret / Feng, Xiaojun / Shen, Guomiao / Call, Melissa / Kim, Min Jae / Lytle, Andrew / Belovarac, Brendan / Vougiouklakis, Theodore / Lin, Lawrence Hsu / Moran, Una / Heguy, Adriana / Troxel, Andrea / Snuderl, Matija / Osman, Iman / Cotzia, Paolo / Jour, George

    The American journal of pathology

    2020  

    Abstract: The Publisher regrets that this article is an accidental duplication of an article that has already been published, https://doi.org/10.1016/j.ajpath.2020.07.001. The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article ... ...

    Abstract The Publisher regrets that this article is an accidental duplication of an article that has already been published, https://doi.org/10.1016/j.ajpath.2020.07.001. The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/our-business/policies/article-withdrawal.
    Keywords covid19
    Language English
    Publishing date 2020-07-07
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2943-9
    ISSN 1525-2191 ; 0002-9440
    ISSN (online) 1525-2191
    ISSN 0002-9440
    DOI 10.1016/j.ajpath.2020.06.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Dimerization of an aptamer generated from Ligand-guided selection (LIGS) yields a high affinity scaffold against B-cells.

    Batool, Sana / Argyropoulos, Kimon V / Azad, Roksana / Okeoma, Precious / Zumrut, Hasan / Bhandari, Sanam / Dekhang, Rigzin / Mallikaratchy, Prabodhika R

    Biochimica et biophysica acta. General subjects

    2018  Volume 1863, Issue 1, Page(s) 232–240

    Abstract: Nucleic Acid Aptamers (NAAs) are a class of synthetic DNA or RNA molecules that bind specifically to their target. We recently introduced an aptamer termed R1.2 against membrane Immunoglobulin M (mIgM) expressing B-cell neoplasms using Ligand Guided ... ...

    Abstract Nucleic Acid Aptamers (NAAs) are a class of synthetic DNA or RNA molecules that bind specifically to their target. We recently introduced an aptamer termed R1.2 against membrane Immunoglobulin M (mIgM) expressing B-cell neoplasms using Ligand Guided Selection (LIGS). While LIGS-generated aptamers are highly specific, their lower affinity prevents aptamers from being used for translational applications. Highly specific aptamers with higher affinity can increase targetability, boosting the application of aptamers as diagnostic and therapeutic molecules. Herein, we report that dimerization of R1.2, an aptamer generated from LIGS, leads to high affinity variants without compromising the specificity. Three dimeric aptamer analogues with variable linker lengths were designed to evaluate the effect of linker length in affinity. The optimized dimeric R1.2 against cultured B-cell neoplasms, four donor B-cell samples and mIgM-positive Waldenström's Macroglobulinemia (WM) showed specificity. Furthermore, confocal imaging of dimeric aptamer and anti-IgM antibody in purified B-cells suggests co-localization. Binding assays against IgM knockout Burkitt's Lymphoma cells utilizing CRISPR/Cas9 further validated specificity of dimeric R1.2. Collectively, our findings show that LIGS-generated aptamers can be re-engineered into dimeric aptamers with high specificity and affinity, demonstrating wide-range of applicability of LIGS in developing clinically practical diagnostic and therapeutic aptamers.
    MeSH term(s) Aptamers, Nucleotide/chemistry ; B-Lymphocytes/metabolism ; Burkitt Lymphoma/metabolism ; CRISPR-Cas Systems ; Cells, Cultured ; Dimerization ; Epitopes/chemistry ; HEK293 Cells ; Humans ; Immunoglobulin M/chemistry ; Lentivirus/genetics ; Leukocytes, Mononuclear/cytology ; Ligands ; Lymphoma, B-Cell/metabolism ; Plasmids/metabolism ; Protein Binding ; Protein Engineering ; Puromycin/chemistry ; SELEX Aptamer Technique ; Temperature ; Waldenstrom Macroglobulinemia/metabolism
    Chemical Substances Aptamers, Nucleotide ; Epitopes ; Immunoglobulin M ; Ligands ; Puromycin (4A6ZS6Q2CL)
    Language English
    Publishing date 2018-10-17
    Publishing country Netherlands
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 60-7
    ISSN 1872-8006 ; 1879-2596 ; 1879-260X ; 1879-2642 ; 1879-2618 ; 1879-2650 ; 0006-3002 ; 0005-2728 ; 0005-2736 ; 0304-4165 ; 0167-4838 ; 1388-1981 ; 0167-4889 ; 0167-4781 ; 0304-419X ; 1570-9639 ; 0925-4439 ; 1874-9399
    ISSN (online) 1872-8006 ; 1879-2596 ; 1879-260X ; 1879-2642 ; 1879-2618 ; 1879-2650
    ISSN 0006-3002 ; 0005-2728 ; 0005-2736 ; 0304-4165 ; 0167-4838 ; 1388-1981 ; 0167-4889 ; 0167-4781 ; 0304-419X ; 1570-9639 ; 0925-4439 ; 1874-9399
    DOI 10.1016/j.bbagen.2018.10.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: A new role for the SRC family kinase HCK as a driver of SYK activation in MYD88 mutated lymphomas.

    Munshi, Manit / Liu, Xia / Kofides, Amanda / Tsakmaklis, Nickolas / Guerrera, Maria Luisa / Hunter, Zachary R / Palomba, M Lia / Argyropoulos, Kimon V / Patterson, Christopher J / Canning, Alexa G / Meid, Kirsten / Gustine, Joshua / Branagan, Andrew R / Flynn, Catherine A / Sarosiek, Shayna / Castillo, Jorge J / Wang, Jinhua / Buhrlage, Sara J / Gray, Nathanael S /
    Munshi, Nikhil C / Anderson, Kenneth C / Treon, Steven P / Yang, Guang

    Blood advances

    2022  Volume 6, Issue 11, Page(s) 3332–3338

    Abstract: The SRC family kinase (SFK) HCK is transcriptionally upregulated and activated by mutated MYD88 (MYD88Mut), a key adaptor for Toll-receptor signaling. HCK activates BTK, AKT, and ERK in MYD88Mut lymphomas. SYK, a B-cell receptor (BCR) component, is ... ...

    Abstract The SRC family kinase (SFK) HCK is transcriptionally upregulated and activated by mutated MYD88 (MYD88Mut), a key adaptor for Toll-receptor signaling. HCK activates BTK, AKT, and ERK in MYD88Mut lymphomas. SYK, a B-cell receptor (BCR) component, is activated in MYD88Mut lymphoma cells. Although the SFK LYN serves as a trigger for SYK activation in MYD88Mut ABC DLBCL cells, LYN activity is muted in MYD88Mut Waldenstrom macroglobulinemia (WM) cells. We therefore investigated a role for HCK in mediating SYK activation. Overexpression of wild-type (WT) (HCKWT) or gatekeeper mutated (HCKThr333Met) HCK in MYD88Mut lymphoma cells triggered SYK activation. Conversely, HCK knockdown reduced p-SYK in MYD88Mut lymphoma cells. Coimmunoprecipitation experiments showed that HCK was complexed with p-SYK in MYD88Mut BCWM.1 and TMD8 cells, but not in MYD88 WT Ramos cells. Rescue experiments in MYD88Mut lymphoma cells expressing HCKThr333Met led to persistent HCK and SYK activation and resistance to the HCK inhibitor A419259. Treatment of primary MYD88Mut WM cells with A419259 reduced p-HCK and p-SYK expression. Taken together, our findings show that SYK is activated by HCK in MYD88Mut B-cell lymphomas cells, broaden the prosurvival signaling generated by aberrant HCK expression in response to MYD88Mut, and help define HCK as an important therapeutic target in MYD88Mut B-cell lymphomas.
    MeSH term(s) Adaptor Proteins, Signal Transducing/metabolism ; Humans ; Lymphoma, B-Cell/enzymology ; Lymphoma, B-Cell/genetics ; Lymphoma, B-Cell/metabolism ; Myeloid Differentiation Factor 88/genetics ; Myeloid Differentiation Factor 88/metabolism ; Proto-Oncogene Proteins c-hck/metabolism ; Syk Kinase/genetics ; Syk Kinase/metabolism ; src-Family Kinases/metabolism
    Chemical Substances Adaptor Proteins, Signal Transducing ; MYD88 protein, human ; Myeloid Differentiation Factor 88 ; HCK protein, human (EC 2.7.10.2) ; Proto-Oncogene Proteins c-hck (EC 2.7.10.2) ; SYK protein, human (EC 2.7.10.2) ; Syk Kinase (EC 2.7.10.2) ; src-Family Kinases (EC 2.7.10.2)
    Language English
    Publishing date 2022-03-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2915908-8
    ISSN 2473-9537 ; 2473-9529
    ISSN (online) 2473-9537
    ISSN 2473-9529
    DOI 10.1182/bloodadvances.2021006147
    Database MEDical Literature Analysis and Retrieval System OnLINE

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