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Lantermans HC, Ma F, Kuil A, van Kesteren S, Yasinoglu S, Yang G, Buhrlage SJ, Wang J, Gray NS, Kersten MJ, Treon SP, Pals ST, Spaargaren M. The dual HCK/BTK inhibitor KIN-8194 impairs growth and integrin-mediated adhesion of BTKi-resistant mantle cell lymphoma. Leukemia 2024; 38:1570-1580. [PMID: 38454120 PMCID: PMC11216997 DOI: 10.1038/s41375-024-02207-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 02/15/2024] [Accepted: 02/26/2024] [Indexed: 03/09/2024]
Abstract
Although Bruton's tyrosine kinase (BTK) inhibitors (BTKi) have significantly improved patient prognosis, mantle cell lymphoma (MCL) is still considered incurable due to primary and acquired resistance. We have recently shown that aberrant expression of the Src-family tyrosine kinase hematopoietic cell kinase (HCK) in MCL correlates with poor prognosis, and that genetic HCK perturbation impairs growth and integrin-mediated adhesion of MCL cells. Here, we show that KIN-8194, a dual inhibitor of BTK and HCK with in vivo activity against Myd88-L265P-driven diffuse large B-cell lymphoma and Waldenström Macroglobulinemia, has a potent growth inhibitory effect in MCL cell lines and primary MCL cells, irrespective of their sensitivity to BTKi (ibrutinib and acalabrutinib). In BTKi-resistant cells this is mediated by inhibition of HCK, which results in repression of AKT-S6 signaling. In addition, KIN-8194 inhibits integrin-mediated adhesion of BTKi-sensitive and insensitive MCL cells to fibronectin and stromal cells in an HCK-dependent manner. Finally, we show that MCL cells with acquired BTKi resistance retain their sensitivity to KIN-8194. Taken together, our data demonstrate that KIN-8194 inhibits growth and integrin-mediated adhesion of BTKi-sensitive MCL cells, as well as MCL cells with primary or acquired BTKi resistance. This renders KIN-8194 a promising novel treatment for MCL patients.
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Affiliation(s)
- Hildo C Lantermans
- Department of Pathology, Amsterdam UMC location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Lymphoma and Myeloma Center Amsterdam - LYMMCARE, Amsterdam, The Netherlands
- Cancer Center Amsterdam (CCA), Cancer Biology and Immunology - Target & Therapy Discovery, Amsterdam, The Netherlands
| | - Fangxue Ma
- Department of Pathology, Amsterdam UMC location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Lymphoma and Myeloma Center Amsterdam - LYMMCARE, Amsterdam, The Netherlands
- Cancer Center Amsterdam (CCA), Cancer Biology and Immunology - Target & Therapy Discovery, Amsterdam, The Netherlands
| | - Annemieke Kuil
- Department of Pathology, Amsterdam UMC location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Lymphoma and Myeloma Center Amsterdam - LYMMCARE, Amsterdam, The Netherlands
- Cancer Center Amsterdam (CCA), Cancer Biology and Immunology - Target & Therapy Discovery, Amsterdam, The Netherlands
| | - Sanne van Kesteren
- Department of Pathology, Amsterdam UMC location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Lymphoma and Myeloma Center Amsterdam - LYMMCARE, Amsterdam, The Netherlands
- Cancer Center Amsterdam (CCA), Cancer Biology and Immunology - Target & Therapy Discovery, Amsterdam, The Netherlands
| | - Sevtap Yasinoglu
- Department of Pathology, Amsterdam UMC location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Lymphoma and Myeloma Center Amsterdam - LYMMCARE, Amsterdam, The Netherlands
- Cancer Center Amsterdam (CCA), Cancer Biology and Immunology - Target & Therapy Discovery, Amsterdam, The Netherlands
| | - Guang Yang
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA, USA
- Blueprint Medicines, Cambridge, MA, USA
| | - Sara J Buhrlage
- Department of Cancer Biology, Dana-Farber Cancer Institute, and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Jinhua Wang
- Department of Cancer Biology, Dana-Farber Cancer Institute, and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Nathanael S Gray
- Department of Chemical and Systems Biology, ChEM-H, Stanford Cancer Institute, School of Medicine, Stanford University, Stanford, CA, USA
| | - Marie José Kersten
- Lymphoma and Myeloma Center Amsterdam - LYMMCARE, Amsterdam, The Netherlands
- Department of Hematology, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands
| | - Steven P Treon
- Bing Center for Waldenström Macroglobulinemia, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA, USA
| | - Steven T Pals
- Department of Pathology, Amsterdam UMC location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Lymphoma and Myeloma Center Amsterdam - LYMMCARE, Amsterdam, The Netherlands
- Cancer Center Amsterdam (CCA), Cancer Biology and Immunology - Target & Therapy Discovery, Amsterdam, The Netherlands
| | - Marcel Spaargaren
- Department of Pathology, Amsterdam UMC location University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands.
- Lymphoma and Myeloma Center Amsterdam - LYMMCARE, Amsterdam, The Netherlands.
- Cancer Center Amsterdam (CCA), Cancer Biology and Immunology - Target & Therapy Discovery, Amsterdam, The Netherlands.
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Xu K, Jiang P, Chen Z, Gu X, Zhang T. ADAM22 acts as a novel predictive biomarker for unfavorable prognosis and facilitates metastasis via PI3K/AKT signaling pathway in nasopharyngeal carcinoma. Pathol Res Pract 2024; 256:155264. [PMID: 38518731 DOI: 10.1016/j.prp.2024.155264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 02/29/2024] [Accepted: 03/11/2024] [Indexed: 03/24/2024]
Abstract
BACKGROUND Nasopharyngeal carcinoma (NPC) is a type of epithelial malignancy known for its high likelihood of metastasizing to distant organs, which remains the primary obstacle in the treatment of NPC. The present study aimed to identify potential intervention target for NPC metastasis. METHODS The differentially expressed genes (DEGs) were firstly analyzed and intersected across various NPC related datasets in the Gene Expression Omnibus database. Subsequently, various techniques including quantitative polymerase chain reaction (qPCR), western blotting, immunohistochemistry, migration and invasion assays, in conjunction with bioinformatics and prognostic modeling, were utilized to elucidate the role of candidate genes in NPC metastasis. RESULTS We discerned the gene a disintegrin and metalloprotease 22 (ADAM22) as a distinct and significant factor in the progression and metastasis of NPC through five datasets. The elevated expression of ADAM22 was observed in clinical tissue and plasma samples with advanced NPC, as well as in high metastatic cells. Furthermore, we highlighted its essential role in a prognostic model that demonstrated strong prediction performance for NPC. Notably, overexpression of ADAM22 was found to enhance the aggressiveness and epithelial-mesenchymal transition (EMT) of low metastatic NPC cells, whereas the downregulation of ADAM22 resulted in suppressed effect in high metastatic cells. Delving into the mechanism, ADAM22 activated the PI3K/Akt signaling pathway through the mediation of Rac Family Small GTPase 2 (RAC2), thereby facilitating EMT and metastasis in NPC. CONCLUSIONS The study provided pioneering insights that ADAM22 had the potential to act as an oncogene by promoting EMT and metastasis of NPC through the RAC2-mediated PI3K/Akt signaling pathway. Thus, ADAM22 could serve as a novel prognostic indicator in NPC.
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Affiliation(s)
- Kaixiong Xu
- Department of Laboratory Medicine, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510180, China
| | - Ping Jiang
- Department of Laboratory Medicine, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510180, China
| | - Zui Chen
- Department of Oncology, the Second XiangYa Hospital of Central South University, Changsha, Hunan 410011, China
| | - Xiaoqiong Gu
- Department of Clinical Biological Resource Bank, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong 510623, China.
| | - Ting Zhang
- Department of Laboratory Medicine, the Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510180, China.
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Wu W, Lu P, Patel P, Ma J, Cai KQ, Mallikarjuna VS, Poureghbali S, Nakhoda SR, Nejati R, Lynn Wang Y. SHP1 loss augments DLBCL cellular response to ibrutinib: a candidate predictive biomarker. Oncogene 2023; 42:409-420. [PMID: 36482202 DOI: 10.1038/s41388-022-02565-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 11/23/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022]
Abstract
SHP1, a tyrosine phosphatase, negatively regulates B-cell receptor (BCR) signaling. Ibrutinib selectively inhibits BTK and has been approved for the treatment of several types of B-cell lymphomas, but not yet in diffuse large B-cell lymphoma (DLBCL). A phase 3 clinical trial of ibrutinib-containing regimen has been completed to evaluate its activity in subtypes or subsets of DLBCL patients. Although the subtype of activated B-cell like (ABC) DLBCL is characterized by chronic active BCR signaling, only a fraction of ABC-DLBCL patients seem to benefit from ibrutinib-containing regimen. New alternative predictive biomarkers are needed to identify patients who better respond. We investigated if SHP1 plays a role in defining the level of the BCR activity and impacts the response to ibrutinib. A meta-analysis revealed that lack of SHP1 protein expression as well as SHP1 promoter hypermethylation is strongly associated with NHL including DLBCL. On a tissue microarray of 95 DLBCL samples, no substantial difference in SHP1 expression was found between the GCB and non-GCB subtypes of DLBCL. However, we identified a strong reverse correlation between SHP1 expression and promoter methylation suggesting that promoter hypermethylation is responsible for SHP1 loss. SHP1 knockout in BCR-dependent GCB and ABC cell lines increased BCR signaling activities and sensitize lymphoma cells to the action of ibrutinib. Rescue of SHP1 in the knockout clones, on the other hand, restored BCR signaling and ibrutinib resistance. Further, pharmacological inhibition of SHP1 in both cell lines and patient-derived primary cells demonstrate that SHP1 inhibition synergized with ibrutinib in suppressing tumor cell growth. Thus, SHP1 loss may serve as an alternative biomarker to cell-of-origin to identify patients who potentially benefit from ibrutinib treatment. Our results further suggest that reducing SHP1 pharmacologically may represent a new strategy to augment tumor response to BCR-directed therapies. Schematic diagram summarizing the major findings. Left panel. When SHP1 is present and functional, it negatively regulates the activity of the BCR pathway. Right pane. When SHP1 is diminished or lost, cells depend more on the increased BCR signaling and making them vulnerable to BTK inhibitor, ibrutinib. Diagram was generated using BioRender.
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Affiliation(s)
- Wenjun Wu
- Department of Pathology, Fox Chase Cancer Center, Philadelphia, PA, USA.,Blood Cell Development and Function Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Pin Lu
- Department of Pathology, Fox Chase Cancer Center, Philadelphia, PA, USA.,Blood Cell Development and Function Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Priyal Patel
- Department of Pathology, Fox Chase Cancer Center, Philadelphia, PA, USA.,Blood Cell Development and Function Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Ji Ma
- Department of Medical Oncology, Shandong Cancer Hospital and Institute, Jinan, China
| | - Kathy Qi Cai
- Histopathology Facility, Fox Chase Cancer Center, Philadelphia, USA
| | | | - Sahar Poureghbali
- Department of Pathology, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Shazia R Nakhoda
- Malignant Hematology, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Reza Nejati
- Department of Pathology, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Y Lynn Wang
- Department of Pathology, Fox Chase Cancer Center, Philadelphia, PA, USA. .,Blood Cell Development and Function Program, Fox Chase Cancer Center, Philadelphia, PA, USA.
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Nakhoda S, Vistarop A, Wang YL. Resistance to Bruton tyrosine kinase inhibition in chronic lymphocytic leukaemia and non-Hodgkin lymphoma. Br J Haematol 2023; 200:137-149. [PMID: 36029036 PMCID: PMC9839590 DOI: 10.1111/bjh.18418] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/30/2022] [Accepted: 08/09/2022] [Indexed: 01/17/2023]
Abstract
Bruton tyrosine kinase inhibitors (BTKi) have transformed the therapeutic landscape of chronic lymphocytic leukaemia (CLL) and non-Hodgkin lymphoma. However, primary and acquired resistance to BTKi can be seen due to a variety of mechanisms including tumour intrinsic and extrinsic mechanisms such as gene mutations, activation of bypass signalling pathways and tumour microenvironment. Herein, we provide an updated review of the key clinical data of BTKi treatment in CLL, mantle cell lymphoma, and diffuse large B-cell lymphoma (DLBCL). We incorporate the most recent findings regarding mechanisms of resistance to covalent and non-covalent inhibitors, including ibrutinib, acalabrutinib, zanubrutinib and pirtobrutinib. We also cover the clinical sensitivity of certain molecular subtypes of DLBCL to an ibrutinib-containing regimen. Lastly, we summarise ongoing clinical investigations aimed at overcoming resistance via use of BTKi-containing combined therapies or the novel non-covalent BTKi. The review article targets an audience of clinical practitioners, clinical investigators and translational researchers.
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Affiliation(s)
- Shazia Nakhoda
- Department of Hematology, Fox Chase Cancer Center, Philadelphia, USA
| | - Aldana Vistarop
- Department of Pathology, Fox Chase Cancer Center, Philadelphia, USA,Blood Cell Development and Function Program, Fox Chase Cancer Center, Philadelphia, USA
| | - Y. Lynn Wang
- Department of Pathology, Fox Chase Cancer Center, Philadelphia, USA,Blood Cell Development and Function Program, Fox Chase Cancer Center, Philadelphia, USA
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CD52 and OXPHOS-potential targets in ibrutinib-treated mantle cell lymphoma. Cell Death Dis 2022; 8:505. [PMID: 36587029 PMCID: PMC9805448 DOI: 10.1038/s41420-022-01289-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 01/01/2023]
Abstract
Altered features of tumor cells acquired across therapy can result in the survival of treatment-resistant clones that may cause minimal residual disease (MRD). Despite the efficacy of ibrutinib in treating relapsed/refractory mantle cell lymphoma, the obstacle of residual cells contributes to relapses of this mature B-cell neoplasm, and the disease remains incurable. RNA-seq analysis of an ibrutinib-sensitive mantle cell lymphoma cell line following ibrutinib incubation of up to 4 d, corroborated our previously postulated resistance mechanism of a metabolic switch to reliance on oxidative phosphorylation (OXPHOS) in surviving cells. Besides, we had shown that treatment-persisting cells were characterized by increased CD52 expression. Therefore, we hypothesized that combining ibrutinib with another agent targeting these potential escape mechanisms could minimize the risk of survival of ibrutinib-resistant cells. Concomitant use of ibrutinib with OXPHOS-inhibitor IACS-010759 increased toxicity compared to ibrutinib alone. Targeting CD52 was even more efficient, as addition of CD52 mAb in combination with human serum following ibrutinib pretreatment led to rapid complement-dependent-cytotoxicity in an ibrutinib-sensitive cell line. In primary mantle cell lymphoma cells, a higher toxic effect with CD52 mAb was obtained, when cells were pretreated with ibrutinib, but only in an ibrutinib-sensitive cohort. Given the challenge of treating multi-resistant mantle cell lymphoma patients, this work highlights the potential use of anti-CD52 therapy as consolidation after ibrutinib treatment in patients who responded to the BTK inhibitor to achieve MRD negativity and prolong progression-free survival.
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Duś-Szachniewicz K, Gdesz-Birula K, Rymkiewicz G. Development and Characterization of 3D Hybrid Spheroids for the Investigation of the Crosstalk Between B-Cell Non-Hodgkin Lymphomas and Mesenchymal Stromal Cells. Onco Targets Ther 2022; 15:683-697. [PMID: 35747403 PMCID: PMC9213039 DOI: 10.2147/ott.s363994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 05/27/2022] [Indexed: 12/12/2022] Open
Abstract
Purpose B-cell non-Hodgkin lymphomas (B-NHLs) are the most common lymphoproliferative malignancy. Despite targeted therapies, the bone marrow involvement remains a challenge in treating aggressive B-NHLs, partly due to the protective interactions of lymphoma cells with mesenchymal stromal cells (MSCs). However, data elucidating the relationship between MSCs and B-NHLs are limited and inconclusive due to the lack of reproducible in vitro three-dimensional (3D) models. Here, we developed and described a size-controlled and stable 3D hybrid spheroids of Ri-1 (diffuse large B-cell lymphoma, DLBCL) and RAJI (Burkitt lymphoma, BL) cells with HS-5 fibroblasts to facilitate research on the crosstalk between B-NHL cells and MSCs. Materials and Methods We applied the commercially available agarose hydrogel microwells for a fast, low-cost, and reproducible hybrid lymphoma/stromal spheroids formation. Standard histological automated procedures were used for formalin fixation and paraffin embedding (FFPE) of 3D models to produce good quality slides for histopathology and immunohistochemical staining. Next, we tested the effect of the anti-cancer drugs: doxorubicin (DOX) and ibrutinib (IBR) on mono-cultured and co-cultured B-NHLs with the use of alamarBlue and live/dead cell fluorescence based assays to confirm their relevancy for drug testing studies. Results We optimized the conditions for B-NHLs spheroid formation in both: a cell line-specific and application-specific manner. Lymphoma cells aggregate into stable spheroids when co-cultured with stromal cells, of which internal architecture was driven by self-organization. Furthermore, we revealed that co-culturing of lymphoma cells with stromal cells significantly reduced IBR-induced apoptosis compared to the 3D mono-culture. Conclusion This article provides details for generating 3D B-NHL spheroids for the studies on the lymphoma- stromal cells. This approach makes it suitable to assess in a relevant in vitro model the activity of new therapeutic agents in B-NHLs.
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Affiliation(s)
- Kamila Duś-Szachniewicz
- Institute of General and Experimental Pathology, Department of Clinical and Experimental Pathology, Wrocław Medical University, Wrocław, Poland
| | - Katarzyna Gdesz-Birula
- Institute of General and Experimental Pathology, Department of Clinical and Experimental Pathology, Wrocław Medical University, Wrocław, Poland
| | - Grzegorz Rymkiewicz
- Flow Cytometry Laboratory, Department of Cancer Pathomorphology, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
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Estrogen Receptor β (ESR2) Transcriptome and Chromatin Binding in a Mantle Cell Lymphoma Tumor Model Reveal the Tumor-Suppressing Mechanisms of Estrogens. Cancers (Basel) 2022; 14:cancers14133098. [PMID: 35804870 PMCID: PMC9264873 DOI: 10.3390/cancers14133098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 12/10/2022] Open
Abstract
Simple Summary Mantle cell lymphoma (MCL) is much more common in males than in females. The reason for this is not clear, but research has indicated that the female sex hormones, estrogens, have a protective effect on MCL development. To study this further, mice were transplanted with MCL cells and treated with an estrogen that selectively activates ESR2, the main nuclear estrogen receptor in lymphoma cells. The activation of ESR2 resulted in reduced MCL tumor growth of MCL tumors that were both sensitive and resistant to a newly developed drug (ibrutinib). The mechanism for this effect was investigated by analyzing gene expression and ESR2 binding to target genes. The results show that the affected genes were enriched in several malignancy-related biological processes, including MCL. Furthermore, the results suggested an interplay between the lymphoma cells and the tumor microenvironment in response to ESR2 activation. Altogether, the results clarify the mechanisms of ESR2-mediated MCL growth impairment by estrogens and provide a possible explanation for the sex difference in incidence. Furthermore, targeting ESR2 may be an option when considering the treatment of MCL. Abstract Mantle cell lymphoma (MCL) is a non-Hodgkin lymphoma with one of the highest male-to-female incidence ratios. The reason for this is not clear, but epidemiological as well as experimental data have suggested a role for estrogens, particularly acting through estrogen receptor β (ESR2). To study the ESR2 effects on MCL progression, MCL cells sensitive and resistant to the Bruton tyrosine kinase inhibitor ibrutinib were grafted to mice and treated with the ESR2-selective agonist diarylpropionitrile (DPN). The results showed that the DPN treatment of mice grafted with both ibrutinib-sensitive and -resistant MCL tumors resulted in impaired tumor progression. To identify the signaling pathways involved in the impaired tumor progression following ESR2 agonist treatment, the transcriptome and ESR2 binding to target genes were investigated by genome-wide chromatin immunoprecipitation in Granta-519 MCL tumors. DPN-regulated genes were enriched in several biological processes that included cell–cell adhesion, endothelial–mesenchymal transition, nuclear factor-kappaB signaling, vasculogenesis, lymphocyte proliferation, and apoptosis. In addition, downregulation of individual genes, such as SOX11 and MALAT1, that play a role in MCL progression was also observed. Furthermore, the data suggested an interplay between the lymphoma cells and the tumor microenvironment in response to the ESR2 agonist. In conclusion, the results clarify the mechanisms by which estrogens, via ESR2, impair MCL tumor progression and provide a possible explanation for the sex-dependent difference in incidence. Furthermore, targeting ESR2 with a selective agonist may be an additional option when considering the treatment of both ibrutinib-sensitive and -resistant MCL tumors.
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Recurrent switch 2 domain RAC2 mutations in intravascular large B-cell lymphoma. Blood Adv 2022; 6:6051-6055. [PMID: 35395066 PMCID: PMC9706525 DOI: 10.1182/bloodadvances.2022006985] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 03/23/2022] [Indexed: 12/14/2022] Open
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Thanigachalam M, Muthusamy Subramanian AV. In-vitro cytotoxicity assessment and cell adhesion study of functionalized nTiO 2 reinforced PEEK biocompatible polymer composite. POLYM-PLAST TECH MAT 2022. [DOI: 10.1080/25740881.2021.2005093] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Affiliation(s)
- Mugilan Thanigachalam
- Department of Mechanical Engineering, Government College of Technology, Coimbatore, India
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Togitani K, Iguchi M, Asagiri T, Ogasawara F, Murakami I, Kojima K. Glucocorticoid-induced redistribution lymphocytosis in mantle cell lymphoma with hyaline vascular Castleman disease-like features. J Clin Exp Hematop 2021; 62:46-51. [PMID: 34707036 PMCID: PMC9010492 DOI: 10.3960/jslrt.21024] [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] [Indexed: 11/06/2022] Open
Abstract
We report a case of mantle cell lymphoma mimicking Castleman disease. A 76-year-old man presented with generalized lymphadenopathy, splenomegaly, anemia, polyclonal gammopathy, and pulmonary infiltrations. Lymph node biopsy revealed histological features of hyaline vascular Castleman disease. Treatment with prednisolone induced lymphocytosis with immunophenotypic and genetic features of mantle cell lymphoma. A detailed immunohistochemical study of the lymph node demonstrated a mantle cell lymphoma-mantle zone growth pattern. Glucocorticoid-induced distribution lymphocytosis has not been reported in mantle cell lymphoma. Careful observation of circulating lymphocytes during steroid treatment may enable diagnosis of the underlying occult lymphoma in a subset of patients exhibiting clinical manifestations of Castleman disease.
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Affiliation(s)
- Kazuto Togitani
- Department of Hematology, Kochi Medical School, Kochi University, Nankoku, Kochi, Japan
| | - Mitsuko Iguchi
- Department of Pathology, Kochi Medical School, Kochi University, Nankoku, Kochi, Japan
| | - Tadashi Asagiri
- Department of Laboratory Medicine, Kochi Medical School Hospital, Nankoku, Kochi, Japan
| | - Fumiya Ogasawara
- Department of Hematology, Kochi Medical School, Kochi University, Nankoku, Kochi, Japan
| | - Ichiro Murakami
- Department of Pathology, Kochi Medical School, Kochi University, Nankoku, Kochi, Japan
| | - Kensuke Kojima
- Department of Hematology, Kochi Medical School, Kochi University, Nankoku, Kochi, Japan
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