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Dcunha NJ, Wei Q, Thakral B, Medeiros LJ. From the archives of MD Anderson Cancer Center: Monomorphic epitheliotropic intestinal T-cell lymphoma: A case with an unusual immunophenotype and discussion of differential diagnosis. Ann Diagn Pathol 2024; 70:152293. [PMID: 38484479 DOI: 10.1016/j.anndiagpath.2024.152293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 05/24/2024]
Abstract
Monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL) is a rare and aggressive T-cell neoplasm associated with poor survival. We report a case of MEITL that presented as an ulcerated mass in the jejunum with perforation. Microscopic examination showed that the neoplasm involved the full thickness of the intestinal wall, extended into the mesentery, and was composed of monomorphic, small to medium-size cells. Immunohistochemical analysis showed that the neoplastic cells were positive for T-cell receptor (TCR) delta, CD3, CD7, CD8 (small subset), BCL-2 and TIA-1, and negative for TCR beta, CD4, CD5, CD10, CD20, CD30, CD34, CD56, CD57, CD99, ALK, cyclin D1, granzyme B, MUM1/IRF4, and TdT. The Ki-67 proliferation index was approximately 50 %. In situ hybridization for Epstein-Barr virus-encoded RNA (EBER ISH) was negative. Next-generation sequencing (NGS) analysis showed mutations involving SETD2 and STAT5B. The patient was treated with aggressive chemotherapy and consolidative autologous stem cell transplant and had clinical remission, but relapsed after about one year. Retreatment led to another one-year interval of clinical remission, but at last follow up the patient has relapsed disease involving the ileum and colon. We also discuss the differential diagnosis of MEITL.
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Affiliation(s)
- Nicholas J Dcunha
- Department of Pathology, Baylor University College of Medicine and The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Qing Wei
- Department of Pathology, Baylor University College of Medicine and The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Beenu Thakral
- Department of Pathology, Baylor University College of Medicine and The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - L Jeffrey Medeiros
- Department of Pathology, Baylor University College of Medicine and The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America.
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Miranda RN, Amador C, Chan JKC, Guitart J, Rech KL, Medeiros LJ, Naresh KN. Fifth Edition of the World Health Organization Classification of Tumors of the Hematopoietic and Lymphoid Tissues: Mature T-Cell, NK-Cell, and Stroma-Derived Neoplasms of Lymphoid Tissues. Mod Pathol 2024; 37:100512. [PMID: 38734236 DOI: 10.1016/j.modpat.2024.100512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 04/14/2024] [Accepted: 05/02/2024] [Indexed: 05/13/2024]
Abstract
This review focuses on mature T cells, natural killer (NK) cells, and stroma-derived neoplasms in the fifth edition of the World Health Organization classification of hematolymphoid tumors, including changes from the revised fourth edition. Overall, information has expanded, primarily due to advancements in genomic understanding. The updated classification adopts a hierarchical format. The updated classification relies on a multidisciplinary approach, incorporating insights from a diverse group of pathologists, clinicians, and geneticists. Indolent NK-cell lymphoproliferative disorder of the gastrointestinal tract, Epstein-Barr virus-positive nodal T- and NK-cell lymphoma, and several stroma-derived neoplasms of lymphoid tissues have been newly introduced or included. The review also provides guidance on how the fifth edition of the World Health Organization classification of hematolymphoid tumors can be applied in routine clinical practice.
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Affiliation(s)
- Roberto N Miranda
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Catalina Amador
- Department of Pathology, University of Miami, Miami, Florida
| | - John K C Chan
- Department of Pathology, Queen Elizabeth Hospital, Kowloon, Hong Kong
| | - Joan Guitart
- Department of Dermatology, Northwestern University Feinberg Medical School, Chicago, Illinois
| | - Karen L Rech
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Kikkeri N Naresh
- Section of Pathology, Translational Science and Therapeutics Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Laboratory Medicine & Pathology, University of Washington, Seattle, Washington.
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3
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Zhou B, Guo M, Li X, Duan T, Peng L, Hao H. Clinicopathological and molecular genetic alterations in monomorphic-epitheliotropic intestinal T-cell lymphoma of the small intestine. Eur J Med Res 2024; 29:191. [PMID: 38520011 PMCID: PMC10960389 DOI: 10.1186/s40001-024-01797-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 03/15/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Small intestinal monomorphic-epitheliotropic intestinal T-cell lymphoma (MEITL) is a rare aggressive T-cell lymphoma originating in the gastrointestinal tract. This study aimed to investigate the clinicopathological features, immunophenotypes, and molecular genetic changes of MEITL. METHODS The clinicopathological data for three patients with surgically resected MEITL of the small intestine were collected. Next, immunohistochemical labeling, Epstein-Barr virus (EBV) in situ hybridization, assessment of clonal rearrangement of T-cell receptor (TCR) genes, and next-generation sequencing (NGS) were performed. RESULTS Of the three patients, two were male and one was female, with ages of 61, 67, and 73 years, respectively. Clinical manifestations were predominantly abdominal pain and distension. Histopathology revealed infiltrative growth of small-to-medium-sized lymphocytes with a consistent morphology between the intestinal walls, accompanied by an obvious pro-epithelial phenomenon. The expression of CD3, CD8, CD43, CD56, TIA-1, CD103, H3K36me3, and Bcl-2 was detected, and the Ki-67 proliferation index ranged from 50% to 80%. All three patients tested negative for EBER. However, monoclonal rearrangement of the TCR gene was detected in them. NGS testing showed a JAK3 mutation in all three cases. Further, STAT5B, SETD2, and TP53 mutations were each observed in two cases, and a BCOR mutation was found in one case. All patients were treated with chemotherapy after surgery. Two patients died 7 and 15 month post-operation, and one patient survived for 5 months of follow-up. CONCLUSIONS Our findings demonstrate that mutations in JAK3 and STAT5B of the JAK/STAT pathway and inactivation of the oncogene SETD2 markedly contribute to the lymphomagenesis of MEITL.
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Affiliation(s)
- Bing Zhou
- Department of Pathology, Second Affiliated Hospital of Jiujiang University, Jiujiang, 332005, Jiangxi, People's Republic of China
| | - Min Guo
- Department of Pathology, Seventh People's Hospital of Shanghai University of TCM, Shanghai, 200137, People's Republic of China
| | - Xiaohua Li
- Department of General Surgery, Second Affiliated Hospital of Jiujiang University, Jiujiang, 332005, Jiangxi, People's Republic of China
| | - Ting Duan
- Department of Pathology, Zhejiang Provincial People's Hospital, Hangzhou, 314408, Zhejiang, People's Republic of China
| | - Lizi Peng
- Department of Pathology, Jiujiang First People's Hospital, Jiujiang, 332000, Jiangxi, People's Republic of China
| | - Hua Hao
- Department of Pathology, Yangpu Hospital, School of Medicine, Tongji University, 450 Tengyue Road, Shanghai, 200090, People's Republic of China.
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4
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Ong SY, Zain JM. Aggressive T-cell lymphomas: 2024: Updates on diagnosis, risk stratification, and management. Am J Hematol 2024; 99:439-456. [PMID: 38304959 DOI: 10.1002/ajh.27165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/18/2023] [Accepted: 11/05/2023] [Indexed: 02/03/2024]
Abstract
INTRODUCTION Aggressive T-cell lymphomas continue to have a poor prognosis. There are over 30 different subtypes of peripheral T-cell lymphoma (PTCL), and we are now beginning to understand the differences between the various subtypes beyond histologic variations. MOLECULAR PATHOGENESIS OF VARIOUS SUBTYPES OF PTCL Gene expression profiling and other molecular techniques have enabled deeper understanding of differences in various subtypes as reflected in the latest 5th WHO classification of PTCL. It is becoming increasingly clear that therapeutic approaches that target specific cellular pathways are needed to improve the clinical outcomes of PTCL. TARGETED THERAPIES There are many targeted agents currently in various stages of clinical trials for PTCL that take advantage of the differential expression of specific proteins or receptors in PTCL tumors. This includes the CD30 directed antibody drug conjugate brentuximab vedotin. Other notable targets are phosphatidylinositol 3-kinase inhibitors, histone deacetylase inhibitors, CD25, and chemokine receptor 4. Anaplastic lymphoma kinase (ALK) inhibitors are promising for ALK expressing tumors. IMMUNOTHERAPIES Allogeneic stem cell transplant continues to be the curative therapy for most aggressive subtypes of PTCL. The use of checkpoint inhibitors in the treatment of PTCL is still controversial, with best results seen in cases of extranodal natural killer cell/T-cell lymphoma. Bispecific antibody-based treatments and chimeric antigen receptor cell-based therapies are in clinical trials.
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Affiliation(s)
- Shin Yeu Ong
- Department of Hematology/Hematopoietic Cell Transplantation, City of Hope Medical Center, Duarte, California, USA
- Department of Haematology, Singapore General Hospital, Singapore, Singapore
| | - Jasmine M Zain
- Department of Hematology/Hematopoietic Cell Transplantation, City of Hope Medical Center, Duarte, California, USA
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Deakin S, Coltman DW. Development of a high-density sub-species-specific targeted SNP assay for Rocky Mountain bighorn sheep ( Ovis canadensis canadensis). PeerJ 2024; 12:e16946. [PMID: 38426129 PMCID: PMC10903336 DOI: 10.7717/peerj.16946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 01/24/2024] [Indexed: 03/02/2024] Open
Abstract
Due to their abundance and relative ease of genotyping, single nucleotide polymorphisms (SNPs) are a commonly used molecular marker for contemporary population genetic and genomic studies. A high-density and cost-effective way to type SNP loci is Allegro targeted genotyping (ATG), which is a form of targeted genotyping by sequencing developed and offered by Tecan genomics. One major drawback of this technology is the need for a reference genome and information on SNP loci when designing a SNP assay. However, for some non-model species genomic information from other closely related species can be used. Here we describe our process of developing an ATG assay to target 50,000 SNPs in Rocky Mountain bighorn sheep, using a reference genome from domestic sheep and SNP resources from prior bighorn sheep studies. We successfully developed a high accuracy, high-density, and relatively low-cost SNP assay for genotyping Rocky Mountain bighorn sheep that genotyped ~45,000 SNP loci. These loci were relatively evenly distributed throughout the genome. Furthermore, the assay produced genotypes at tens of thousands of SNP loci when tested on other mountain sheep species and subspecies.
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Affiliation(s)
- Samuel Deakin
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - David W. Coltman
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
- Department of Biology, University of Western Ontario, London, Ontario, Canada
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Dong W, Zhao H, Xiao S, Zheng L, Fan T, Wang L, Zhang H, Hu Y, Yang J, Wang T, Xiao W. Single-cell RNA-seq analyses inform necroptosis-associated myeloid lineages influence the immune landscape of pancreas cancer. Front Immunol 2023; 14:1263633. [PMID: 38149248 PMCID: PMC10749962 DOI: 10.3389/fimmu.2023.1263633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 11/22/2023] [Indexed: 12/28/2023] Open
Abstract
Introduction Tumor-infiltrating myeloid cells (TIMs) are key regulators in tumor progression, but the similarity and distinction of their fundamental properties in pancreatic ductal adenocarcinoma (PDAC) remain elusive. Method In this study, we conducted scRNA-seq data analysis of cells from 12 primary tumor (PT) tissues, 4 metastatic (Met) tumor tissues, 3 adjacent normal pancreas tissues (Para), and PBMC samples across 16 PDAC patients, and revealed a heterogeneous TIMs environment in PDAC. Result Systematic comparisons between tumor and non-tumor samples of myeloid lineages identified 10 necroptosis-associated genes upregulated in PDAC tumors compared to 5 upregulated in paratumor or healthy peripheral blood. A novel RTM (resident tissue macrophages), GLUL-SQSTM1- RTM, was found to act as a positive regulator of immunity. Additionally, HSP90AA1+HSP90AB1+ mast cells exhibited pro-immune characteristics, and JAK3+TLR4+ CD16 monocytes were found to be anti-immune. The findings were validated through clinical outcomes and cytokines analyses. Lastly, intercellular network reconstruction supported the associations between the identified novel clusters, cancer cells, and immune cell populations. Conclusion Our analysis comprehensively characterized major myeloid cell lineages and identified three subsets of myeloid-derived cells associated with necroptosis. These findings not only provide a valuable resource for understanding the multi-dimensional characterization of the tumor microenvironment in PDAC but also offer valuable mechanistic insights that can guide the design of effective immuno-oncology treatment strategies.
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Affiliation(s)
- Weiwei Dong
- Senior Dept of Oncology, The Fifth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Huixia Zhao
- Dept of Oncology, The Forth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Shanshan Xiao
- Department of Research and Development (R&D), Hangzhou Repugene Technology Co., Ltd., Hangzhou, China
| | - Liuqing Zheng
- Department of Research and Development (R&D), Hangzhou Repugene Technology Co., Ltd., Hangzhou, China
| | - Tongqiang Fan
- Department of Research and Development (R&D), Hangzhou Repugene Technology Co., Ltd., Hangzhou, China
| | - Li Wang
- Department of Research and Development (R&D), Hangzhou Repugene Technology Co., Ltd., Hangzhou, China
| | - He Zhang
- Dept of Oncology, The Forth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Yanyan Hu
- Senior Dept of Oncology, The Fifth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Jingwen Yang
- Senior Dept of Oncology, The Fifth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Tao Wang
- Department of Research and Development (R&D), Hangzhou Repugene Technology Co., Ltd., Hangzhou, China
| | - Wenhua Xiao
- Senior Dept of Oncology, The Fifth Medical Center of People's Liberation Army (PLA) General Hospital, Beijing, China
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Lewis NE, Zhou T, Dogan A. Biology and genetics of extranodal mature T-cell and NKcell lymphomas and lymphoproliferative disorders. Haematologica 2023; 108:3261-3277. [PMID: 38037802 PMCID: PMC10690927 DOI: 10.3324/haematol.2023.282718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 08/28/2023] [Indexed: 12/02/2023] Open
Abstract
The extranodal mature T-cell and NK-cell lymphomas and lymphoproliferative disorders represent a unique group of rare neoplasms with both overlapping and distinct clinicopathological, biological, and genomic features. Their predilection for specific sites, such as the gastrointestinal tract, aerodigestive tract, liver, spleen, and skin/soft tissues, underlies their classification. Recent genomic advances have furthered our understanding of the biology and pathogenesis of these diseases, which is critical for accurate diagnosis, prognostic assessment, and therapeutic decision-making. Here we review clinical, pathological, genomic, and biological features of the following extranodal mature T-cell and NK-cell lymphomas and lymphoproliferative disorders: primary intestinal T-cell and NK-cell neoplasms, hepatosplenic T-cell lymphoma, extranodal NK/T-cell lymphoma, nasal type, and subcutaneous panniculitis-like T-cell lymphoma.
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Affiliation(s)
- Natasha E. Lewis
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Ting Zhou
- Molecular Diagnostic Laboratory, Department of Hematopathology, MD Anderson Cancer Center, Houston, TX, USA
| | - Ahmet Dogan
- Hematopathology Service, Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
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Stuver R, Epstein-Peterson ZD, Horwitz SM. Few and far between: clinical management of rare extranodal subtypes of mature T-cell and NK-cell lymphomas. Haematologica 2023; 108:3244-3260. [PMID: 38037801 PMCID: PMC10690914 DOI: 10.3324/haematol.2023.282717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 07/03/2023] [Indexed: 12/02/2023] Open
Abstract
While all peripheral T-cell lymphomas are uncommon, certain subtypes are truly rare, with less than a few hundred cases per year in the USA. There are often no dedicated clinical trials in these rare subtypes, and data are generally limited to case reports and retrospective case series. Therefore, clinical management is often based on this limited literature and extrapolation of data from the more common, nodal T-cell lymphomas in conjunction with personal experience. Nevertheless, thanks to tremendous pre-clinical efforts to understand these rare diseases, an increasing appreciation of the biological changes that underlie these entities is forming. In this review, we attempt to summarize the relevant literature regarding the initial management of certain rare subtypes, specifically subcutaneous panniculitis-like T-cell lymphoma, hepatosplenic T-cell lymphoma, intestinal T-cell lymphomas, and extranodal NK/T-cell lymphoma. While unequivocally established approaches in these diseases do not exist, we make cautious efforts to provide our approaches to clinical management when possible.
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Affiliation(s)
- Robert Stuver
- Lymphoma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center.
| | - Zachary D Epstein-Peterson
- Lymphoma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center; Department of Medicine, Weill Cornell Medical College
| | - Steven M Horwitz
- Lymphoma Service, Department of Medicine, Memorial Sloan Kettering Cancer Center; Department of Medicine, Weill Cornell Medical College; Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
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Dhar SS, Brown C, Rizvi A, Reed L, Kotla S, Zod C, Abraham J, Abe JI, Rajaram V, Chen K, Lee M. Heterozygous Kmt2d loss diminishes enhancers to render medulloblastoma cells vulnerable to combinatory inhibition of lysine demethylation and oxidative phosphorylation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.29.564587. [PMID: 37961118 PMCID: PMC10634931 DOI: 10.1101/2023.10.29.564587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
The histone H3 lysine 4 (H3K4) methyltransferase KMT2D (also called MLL4) is one of the most frequently mutated epigenetic modifiers in medulloblastoma (MB) and other types of cancer. Notably, heterozygous loss of KMT2D is prevalent in MB and other cancer types. However, what role heterozygous KMT2D loss plays in tumorigenesis has not been well characterized. Here, we show that heterozygous Kmt2d loss highly promotes MB driven by heterozygous loss of the MB suppressor gene Ptch in mice. Heterozygous Kmt2d loss upregulated tumor-promoting programs, including oxidative phosphorylation and G-protein-coupled receptor signaling, in Ptch-mutant-driven MB genesis. Mechanistically, both downregulation of the transcription-repressive tumor suppressor gene NCOR2 by heterozygous Kmt2d loss and upregulation of the oncogene MycN by heterozygous Ptch loss increased the expression of tumor-promoting genes. Moreover, heterozygous Kmt2d loss extensively diminished enhancer signals (e.g., H3K27ac) and H3K4me3 signature, including those for tumor suppressor genes (e.g., Ncor2). Combinatory pharmacological inhibition of oxidative phosphorylation and the H3K4 demethylase LSD1 drastically reduced tumorigenicity of MB cells bearing heterozygous Kmt2d loss. These findings reveal the mechanistic basis underlying the MB-promoting effect of heterozygous KMT2D loss, provide a rationale for a therapeutic strategy for treatment of KMT2D-deficient MB, and have mechanistic implications for the molecular pathogenesis of other types of cancer bearing heterozygous KMT2D loss.
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Tomacinschii V, Mosquera Orgueira A, Santos CA, Robu M, Buruiana S, Fraga Rodriguez MF. The implication of next-generation sequencing in the diagnosis and clinical management of non-Hodgkin lymphomas. Front Oncol 2023; 13:1275327. [PMID: 38023160 PMCID: PMC10663367 DOI: 10.3389/fonc.2023.1275327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 10/27/2023] [Indexed: 12/01/2023] Open
Abstract
Next generation sequencing (NGS) is a technology that broadens the horizon of knowledge of several somatic pathologies, especially in oncological and oncohematological pathology. In the case of NHL, the understanding of the mechanisms of tumorigenesis, tumor proliferation and the identification of genetic markers specific to different lymphoma subtypes led to more accurate classification and diagnosis. Similarly, the data obtained through NGS allowed the identification of recurrent somatic mutations that can serve as therapeutic targets that can be inhibited and thus reducing the rate of resistant cases. The article's purpose is to offer a comprehensive overview of the best ways of integrating of next-generation sequencing technologies for diagnosis, prognosis, classification, and selection of optimal therapy from the perspective of tailor-made medicine.
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Affiliation(s)
- Victor Tomacinschii
- Department of Hematology, Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova
- Department of Hematology, Public Medical Sanitary Institution (PMSI) Institute of Oncology, Chisinau, Moldova
| | - Adrian Mosquera Orgueira
- University Hospital of Santiago de Compostela, Servizo Galego de Saude (SERGAS), Santiago de Compostela, Spain
- Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain
| | - Carlos Aliste Santos
- University Hospital of Santiago de Compostela, Servizo Galego de Saude (SERGAS), Santiago de Compostela, Spain
| | - Maria Robu
- Department of Hematology, Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova
| | - Sanda Buruiana
- Department of Hematology, Nicolae Testemitanu State University of Medicine and Pharmacy, Chisinau, Moldova
| | - Maximo Francisco Fraga Rodriguez
- University Hospital of Santiago de Compostela, Servizo Galego de Saude (SERGAS), Santiago de Compostela, Spain
- Health Research Institute of Santiago de Compostela, Santiago de Compostela, Spain
- Department of Forensic Sciences, Pathology, Ginecology and Obstetrics and Pediatrics, Faculty of Medicine, University of Santiago de Compostela, Santiago de Compostela, Spain
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Wang W, Lopez McDonald MC, Kim C, Ma M, Pan Z(T, Kaufmann C, Frank DA. The complementary roles of STAT3 and STAT1 in cancer biology: insights into tumor pathogenesis and therapeutic strategies. Front Immunol 2023; 14:1265818. [PMID: 38022653 PMCID: PMC10663227 DOI: 10.3389/fimmu.2023.1265818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
STATs are a family of transcription factors that regulate many critical cellular processes such as proliferation, apoptosis, and differentiation. Dysregulation of STATs is frequently observed in tumors and can directly drive cancer pathogenesis. STAT1 and STAT3 are generally viewed as mediating opposite roles in cancer development, with STAT1 suppressing tumorigenesis and STAT3 promoting oncogenesis. In this review, we investigate the specific roles of STAT1 and STAT3 in normal physiology and cancer biology, explore their interactions with each other, and offer insights into therapeutic strategies through modulating their transcriptional activity.
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Affiliation(s)
| | | | | | | | | | | | - David A. Frank
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, United States
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12
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Scarmozzino F, Pizzi M, Pelizzaro F, Angerilli V, Dei Tos AP, Piazza F, Savarino EV, Zingone F, Fassan M. Refractory celiac disease and its mimickers: a review on pathogenesis, clinical-pathological features and therapeutic challenges. Front Oncol 2023; 13:1273305. [PMID: 38023263 PMCID: PMC10662059 DOI: 10.3389/fonc.2023.1273305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 10/20/2023] [Indexed: 12/01/2023] Open
Abstract
Refractory celiac disease (RCD) and enteropathy-associated T-cell lymphoma (EATL) are rare, yet severe complications of celiac disease (CD). Over the last decades, several studies have addressed the biology and clinical-pathological features of such conditions, highlighting unique disease patterns and recurrent genetic events. Current classification proposals identify two forms of RCD, namely: (i) type 1 RCD (RCD-I), characterized by phenotypically normal intra-epithelial lymphocytes (IELs); and (ii) type 2 RCD (RCD-II), featuring phenotypically aberrant IELs. While RCD-I likely represents a gluten-independent dysimmune reaction against small bowel epithelial cells, RCD-II is better considered an in situ aggressive T-cell lymphoma, with high rates of progression to overt EATL. The diagnosis of RCD and EATL is often challenging, due to misleading clinical-pathological features and to significant overlap with several CD-unrelated gastro-intestinal disorders. Similarly, the treatment of RCD and EATL is an unmet clinical need for both gastroenterologists and hematologists. Moving from such premises, this review aims to provide a comprehensive view of RCD and EATL, specifically considering their pathogenesis and the many still open issues concerning their diagnosis and clinical management.
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Affiliation(s)
- Federico Scarmozzino
- Surgical Pathology and Cytopathology Unit, Department of Medicine-DIMED, University of Padua School of Medicine, Padua, Italy
| | - Marco Pizzi
- Surgical Pathology and Cytopathology Unit, Department of Medicine-DIMED, University of Padua School of Medicine, Padua, Italy
| | - Filippo Pelizzaro
- Gastroenterology Unit, Department of Surgical, Gastroenterological and Oncological Sciences -DISCOG, University of Padua School of Medicine, Padua, Italy
| | - Valentina Angerilli
- Surgical Pathology and Cytopathology Unit, Department of Medicine-DIMED, University of Padua School of Medicine, Padua, Italy
| | - Angelo Paolo Dei Tos
- Surgical Pathology and Cytopathology Unit, Department of Medicine-DIMED, University of Padua School of Medicine, Padua, Italy
| | - Francesco Piazza
- Hematology & Clinical Immunology Unit, Department of Medicine-DIMED, University of Padua School of Medicine, Padua, Italy
| | - Edoardo Vincenzo Savarino
- Gastroenterology Unit, Department of Surgical, Gastroenterological and Oncological Sciences -DISCOG, University of Padua School of Medicine, Padua, Italy
| | - Fabiana Zingone
- Gastroenterology Unit, Department of Surgical, Gastroenterological and Oncological Sciences -DISCOG, University of Padua School of Medicine, Padua, Italy
| | - Matteo Fassan
- Surgical Pathology and Cytopathology Unit, Department of Medicine-DIMED, University of Padua School of Medicine, Padua, Italy
- Veneto Institute of Oncology, IOV-IRCCS, Padua, Italy
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Drieux F, Lemonnier F, Gaulard P. How molecular advances may improve the diagnosis and management of PTCL patients. Front Oncol 2023; 13:1202964. [PMID: 37427095 PMCID: PMC10328093 DOI: 10.3389/fonc.2023.1202964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 05/22/2023] [Indexed: 07/11/2023] Open
Abstract
Peripheral T-cell lymphomas (PTCL) comprised more than 30 rare heterogeneous entities, representing 10 to 15% of adult non-Hodgkin lymphomas. Although their diagnosis is still mainly based on clinical, pathological, and phenotypic features, molecular studies have allowed for a better understanding of the oncogenic mechanisms involved and the refinement of many PTCL entities in the recently updated classifications. The prognosis remains poor for most entities (5-year overall survival < 30%), with current conventional therapies based on anthracyclin-based polychemotherapy regimen, despite many years of clinical trials. The recent use of new targeted therapies appears to be promising for relapsed/refractory patients, such as demethylating agents in T-follicular helper (TFH) PTCL. However further studies are needed to evaluate the proper combination of these drugs in the setting of front-line therapy. In this review, we will summarize the oncogenic events for the main PTCL entities and report the molecular targets that have led to the development of new therapies. We will also discuss the development of innovative high throughput technologies that aid the routine workflow for the histopathological diagnosis and management of PTCL patients.
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Affiliation(s)
- Fanny Drieux
- Service d’Anatomie et de Cytologie Pathologiques, INSERM U1245, Centre Henri Becquerel, Rouen, France
| | - François Lemonnier
- Unité hémopathies Lymphoïdes, Hôpitaux Universitaires Henri Mondor, Assistance Publique des Hôpitaux de Paris, Créteil, France
- Institut Mondor de Recherche Biomédicale, INSERM U955, Université Paris Est Créteil, Créteil, France
| | - Philippe Gaulard
- Institut Mondor de Recherche Biomédicale, INSERM U955, Université Paris Est Créteil, Créteil, France
- Département de Pathologie, Hôpitaux Universitaires Henri Mondor, Assistance Publique des Hôpitaux de Paris, Créteil, France
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14
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An update on genetic aberrations in T-cell neoplasms. Pathology 2023; 55:287-301. [PMID: 36801152 DOI: 10.1016/j.pathol.2022.12.350] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 12/17/2022] [Accepted: 12/26/2022] [Indexed: 01/20/2023]
Abstract
T-cell neoplasms are a highly heterogeneous group of leukaemias and lymphomas that represent 10-15% of all lymphoid neoplasms. Traditionally, our understanding of T-cell leukaemias and lymphomas has lagged behind that of B-cell neoplasms, in part due to their rarity. However, recent advances in our understanding of T-cell differentiation, based on gene expression and mutation profiling and other high throughput methods, have better elucidated the pathogenetic mechanisms of T-cell leukaemias and lymphomas. In this review, we provide an overview of many of the molecular abnormalities that occur in various types of T-cell leukaemia and lymphoma. Much of this knowledge has been used to refine diagnostic criteria that has been included in the fifth edition of the World Health Organization. This knowledge is also being used to improve prognostication and identify novel therapeutic targets, and we expect this progress will continue, eventually resulting in improved outcomes for patients with T-cell leukaemias and lymphomas.
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15
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Montañez-Miranda C, Perszyk RE, Harbin NH, Okalova J, Ramineni S, Traynelis SF, Hepler JR. Functional Assessment of Cancer-Linked Mutations in Sensitive Regions of Regulators of G Protein Signaling Predicted by Three-Dimensional Missense Tolerance Ratio Analysis. Mol Pharmacol 2023; 103:21-37. [PMID: 36384958 PMCID: PMC10955721 DOI: 10.1124/molpharm.122.000614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/04/2022] [Accepted: 10/18/2022] [Indexed: 11/18/2022] Open
Abstract
Regulators of G protein signaling (RGS) proteins modulate G protein-coupled receptor (GPCR) signaling by acting as negative regulators of G proteins. Genetic variants in RGS proteins are associated with many diseases, including cancers, although the impact of these mutations on protein function is uncertain. Here we analyze the RGS domains of 15 RGS protein family members using a novel bioinformatic tool that measures the missense tolerance ratio (MTR) using a three-dimensional (3D) structure (3DMTR). Subsequent permutation analysis can define the protein regions that are most significantly intolerant (P < 0.05) in each dataset. We further focused on RGS14, RGS10, and RGS4. RGS14 exhibited seven significantly tolerant and seven significantly intolerant residues, RGS10 had six intolerant residues, and RGS4 had eight tolerant and six intolerant residues. Intolerant and tolerant-control residues that overlap with pathogenic cancer mutations reported in the COSMIC cancer database were selected to define the functional phenotype. Using complimentary cellular and biochemical approaches, proteins were tested for effects on GPCR-Gα activation, Gα binding properties, and downstream cAMP levels. Identified intolerant residues with reported cancer-linked mutations RGS14-R173C/H and RGS4-K125Q/E126K, and tolerant RGS14-S127P and RGS10-S64T resulted in a loss-of-function phenotype in GPCR-G protein signaling activity. In downstream cAMP measurement, tolerant RGS14-D137Y and RGS10-S64T and intolerant RGS10-K89M resulted in change of function phenotypes. These findings show that 3DMTR identified intolerant residues that overlap with cancer-linked mutations cause phenotypic changes that negatively impact GPCR-G protein signaling and suggests that 3DMTR is a potentially useful bioinformatics tool for predicting functionally important protein residues. SIGNIFICANCE STATEMENT: Human genetic variant/mutation information has expanded rapidly in recent years, including cancer-linked mutations in regulator of G protein signaling (RGS) proteins. However, experimental testing of the impact of this vast catalogue of mutations on protein function is not feasible. We used the novel bioinformatics tool three-dimensional missense tolerance ratio (3DMTR) to define regions of genetic intolerance in RGS proteins and prioritize which cancer-linked mutants to test. We found that 3DMTR more accurately classifies loss-of-function mutations in RGS proteins than other databases thereby offering a valuable new research tool.
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Affiliation(s)
- Carolina Montañez-Miranda
- Department of Pharmacology and Chemical Biology (C.M.-M., R.E.P., N.H.H., S.R., S.F.T., J.R.H.) and Aflac Cancer and Blood Disorders Center, Department of Pediatrics (J.O.), Emory University School of Medicine, Atlanta, Georgia
| | - Riley E Perszyk
- Department of Pharmacology and Chemical Biology (C.M.-M., R.E.P., N.H.H., S.R., S.F.T., J.R.H.) and Aflac Cancer and Blood Disorders Center, Department of Pediatrics (J.O.), Emory University School of Medicine, Atlanta, Georgia
| | - Nicholas H Harbin
- Department of Pharmacology and Chemical Biology (C.M.-M., R.E.P., N.H.H., S.R., S.F.T., J.R.H.) and Aflac Cancer and Blood Disorders Center, Department of Pediatrics (J.O.), Emory University School of Medicine, Atlanta, Georgia
| | - Jennifer Okalova
- Department of Pharmacology and Chemical Biology (C.M.-M., R.E.P., N.H.H., S.R., S.F.T., J.R.H.) and Aflac Cancer and Blood Disorders Center, Department of Pediatrics (J.O.), Emory University School of Medicine, Atlanta, Georgia
| | - Suneela Ramineni
- Department of Pharmacology and Chemical Biology (C.M.-M., R.E.P., N.H.H., S.R., S.F.T., J.R.H.) and Aflac Cancer and Blood Disorders Center, Department of Pediatrics (J.O.), Emory University School of Medicine, Atlanta, Georgia
| | - Stephen F Traynelis
- Department of Pharmacology and Chemical Biology (C.M.-M., R.E.P., N.H.H., S.R., S.F.T., J.R.H.) and Aflac Cancer and Blood Disorders Center, Department of Pediatrics (J.O.), Emory University School of Medicine, Atlanta, Georgia
| | - John R Hepler
- Department of Pharmacology and Chemical Biology (C.M.-M., R.E.P., N.H.H., S.R., S.F.T., J.R.H.) and Aflac Cancer and Blood Disorders Center, Department of Pediatrics (J.O.), Emory University School of Medicine, Atlanta, Georgia
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16
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de Leval L, Feldman AL, Pileri S, Nakamura S, Gaulard P. Extranodal T- and NK-cell lymphomas. Virchows Arch 2023; 482:245-264. [PMID: 36336765 PMCID: PMC9852223 DOI: 10.1007/s00428-022-03434-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/12/2022] [Accepted: 10/15/2022] [Indexed: 11/09/2022]
Abstract
Non-cutaneous extranodal NK/T cell lymphoproliferations constitute a heterogenous group of rare neoplasms, occurring primarily in the gastro-intestinal tract, nasal area, spleen, and liver. Their nomenclature refers to their usual clinical presentation and predilection for specific anatomic sites-i.e. extranodal NK/T-cell lymphoma, nasal-type, hepatosplenic T-cell lymphoma, primary intestinal T-cell lymphomas, indolent lymphoproliferative disorders of the gastrointestinal tract, and breast implant-associated anaplastic large cell lymphoma. Extranodal tissues may also be involved by T-cell leukemias, or other entities usually presenting as nodal diseases. Primary extranodal entities range from indolent to highly aggressive diseases. Here, we will review the clinicopathologic features of the pertinent entities including the recent advances in their molecular and genetic characterization, with an emphasis on the changes introduced in the 2022 International Consensus Classification of lymphoid neoplasms, and highlight the diagnostic criteria helpful to sort out the distinction with potential mimickers.
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Affiliation(s)
- Laurence de Leval
- grid.8515.90000 0001 0423 4662Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, 25 rue du Bugnon, CH- 1011 Lausanne, Switzerland
| | - Andrew L. Feldman
- grid.66875.3a0000 0004 0459 167XDepartment of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN USA
| | - Stefano Pileri
- grid.15667.330000 0004 1757 0843Haematopathology Division, IRCCS, Istituto Europeo Di Oncologia, IEO, Milano, Italy
| | - Shigeo Nakamura
- grid.437848.40000 0004 0569 8970Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Philippe Gaulard
- grid.412116.10000 0004 1799 3934Department of Pathology, University Hospital Henri Mondor, AP-HP, Créteil, France ,grid.462410.50000 0004 0386 3258Inserm U955, Faculty of Medicine, IMRB, University of Paris-Est Créteil, Créteil, France
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17
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Pan-cancer functional analysis of somatic mutations in G protein-coupled receptors. Sci Rep 2022; 12:21534. [PMID: 36513718 PMCID: PMC9747925 DOI: 10.1038/s41598-022-25323-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 11/28/2022] [Indexed: 12/15/2022] Open
Abstract
G Protein-coupled receptors (GPCRs) are the most frequently exploited drug target family, moreover they are often found mutated in cancer. Here we used a dataset of mutations found in patient samples derived from the Genomic Data Commons and compared it to the natural human variance as exemplified by data from the 1000 genomes project. We explored cancer-related mutation patterns in all GPCR classes combined and individually. While the location of the mutations across the protein domains did not differ significantly in the two datasets, a mutation enrichment in cancer patients was observed among class-specific conserved motifs in GPCRs such as the Class A "DRY" motif. A Two-Entropy Analysis confirmed the correlation between residue conservation and cancer-related mutation frequency. We subsequently created a ranking of high scoring GPCRs, using a multi-objective approach (Pareto Front Ranking). Our approach was confirmed by re-discovery of established cancer targets such as the LPA and mGlu receptor families, but also discovered novel GPCRs which had not been linked to cancer before such as the P2Y Receptor 10 (P2RY10). Overall, this study presents a list of GPCRs that are amenable to experimental follow up to elucidate their role in cancer.
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18
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Yu H, Liu S, Wu Z, Gao F. GNAI2 Is a Risk Factor for Gastric Cancer: Study of Tumor Microenvironment (TME) and Establishment of Immune Risk Score (IRS). OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1254367. [PMID: 36275898 PMCID: PMC9586761 DOI: 10.1155/2022/1254367] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/30/2022] [Indexed: 11/18/2022]
Abstract
Purpose Although the G protein subunit α i2 (GNAI2) is upregulated in multiple cancers, its prognostic value and exact role in the development of gastric cancer (GC) remain largely unknown. Methods This study evaluated the effect of GNAI2 on the tumor microenvironment (TME) in GC, constructed an immune risk score (IRS) model based on differentially-expressed immune genes, and systematically correlated GNAI2 and epigenetic factor expression patterns with TME and IRS. Also, RT-qPCR, flow cytometry, Western blotting (WB), and transwell assays were carried out to explore the regulatory mechanism of GNAI2 in GC. Results High GNAI2 expression was associated with poor prognosis. Cytokine activation, an increase in tumor-infiltrating immune cells (TIIC), and the accumulation of regulatory T cells in the tumor immune cycle were all promoted by the TME, which was significantly associated with GNAI2 expression. Two different differentially expressed mRNA (DER) modification patterns were determined. These two DERs-clusters had significantly different TME cell infiltrations and were classified as either noninflamed or immune-inflamed phenotypes. The IRS model constructed using differentially expressed genes (DEGs) had great potential in predicting GC prognosis. The IRS model was also used in assessing clinicopathological features, such as microsatellite instability (MSI) status, epithelial-mesenchymal transition (EMT) status, clinical stages, tumor mutational burden (TMB), and tumor immune dysfunction and exclusion (TIDE) scores. Low IRS scores were associated with high immune checkpoint gene expression. Cell and animal studies confirmed that GNAI2 activated PI3K/AKT pathway and promoted the growth and migration of GC cells. Conclusion The IRS model can be used for survival prediction and GNAI2 serves as a candidate therapeutic target for GC patients.
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Affiliation(s)
- Han Yu
- Meizhou People's Hospital, Huangtang Road, Meijiang District, Meizhou, 514031 Guangdong Province, China
| | - Sha Liu
- Meizhou People's Hospital, Huangtang Road, Meijiang District, Meizhou, 514031 Guangdong Province, China
| | - ZuGuang Wu
- Meizhou People's Hospital, Huangtang Road, Meijiang District, Meizhou, 514031 Guangdong Province, China
| | - FenFei Gao
- School of Pharmacology, Shantou University, 22 Xinling Road, Shantou, 515063 Guangdong Province, China
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19
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Domoto H, Araki T, Ogai A, Inukai M, Chen CK, Tomita S, Mukai K, Nakamura N. Surface CD3-negative monomorphic epitheliotropic intestinal T-cell lymphoma. J Clin Exp Hematop 2022; 62:169-174. [PMID: 35979577 DOI: 10.3960/jslrt.22005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Intestinal T/NK-cell lymphomas include enteropathy-associated T-cell lymphoma (EATL), monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL), indolent T-cell lymphoproliferative disorders of the GI tract (ITCLPD), extranodal NK/T-cell lymphoma, nasal type (ENKTL), and intestinal T-cell lymphoma NOS (ITCL-NOS). Here we describe a case of surface CD3-negative MEITL. A 63-year-old Japanese female had a tumor located in the conglomerated ileum, which formed multiple mass lesions. The resected tissue showed a diffuse infiltration of monomorphic medium-sized lymphocytes with epitheliotropism. Flowcytometry using a fresh specimen of the tumor revealed positivity for CD7, CD8, CD38, and CD56, but not surface CD3. On immunohistochemistry, the tumor showed positivity for cytoplasmic CD3, CD8, CD56, TIA-1, Granzyme B, and perforin. EBER with in situ hybridization was negative. Moreover, H3K36me3, which is negative in MEITL with SETD2-mutation, was positive. This is an important case of MEITL due to its oncogenesis.
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Affiliation(s)
- Hideharu Domoto
- Department of Diagnostic Pathology, Keiyu Hospital, Yokohama, Kanagawa, Japan
| | - Takahiro Araki
- Department of Hematology, Keiyu Hospital, Yokohama, Kanagawa, Japan
| | - Asuka Ogai
- Department of Hematology, Keiyu Hospital, Yokohama, Kanagawa, Japan
| | - Michiko Inukai
- Department of Surgery, Keiyu Hospital, Yokohama, Kanagawa, Japan
| | - Chien K Chen
- Department of Hematology, Keiyu Hospital, Yokohama, Kanagawa, Japan
| | - Sakura Tomita
- Department of Pathological Diagnostics, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Kiyoshi Mukai
- Department of Diagnostic Pathology, Keiyu Hospital, Yokohama, Kanagawa, Japan
| | - Naoya Nakamura
- Department of Pathological Diagnostics, Tokai University School of Medicine, Isehara, Kanagawa, Japan
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20
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Cheng X, Lou K, Ding L, Zou X, Huang R, Xu G, Zou J, Zhang G. Clinical potential of the Hippo-YAP pathway in bladder cancer. Front Oncol 2022; 12:925278. [PMID: 35912245 PMCID: PMC9336529 DOI: 10.3389/fonc.2022.925278] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Bladder cancer (BC) is one of the world’s most frequent cancers. Surgery coupled with adjuvant platinum-based chemotherapy is the current standard of therapy for BC. However, a high proportion of patients progressed to chemotherapy-resistant or even neoplasm recurrence. Hence, identifying novel treatment targets is critical for clinical treatment. Current studies indicated that the Hippo-YAP pathway plays a crucial in regulating the survival of cancer stem cells (CSCs), which is related to the progression and reoccurrence of a variety of cancers. In this review, we summarize the evidence that Hippo-YAP mediates the occurrence, progression and chemotherapy resistance in BC, as well as the role of the Hippo-YAP pathway in regulating bladder cancer stem-like cells (BCSCs). Finally, the clinical potential of Hippo-YAP in the treatment of BC was prospected.
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Affiliation(s)
- Xin Cheng
- First Clinical College, Gannan Medical University, Ganzhou, China
- Department of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Institute of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Kecheng Lou
- First Clinical College, Gannan Medical University, Ganzhou, China
- Department of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Institute of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Liang Ding
- First Clinical College, Gannan Medical University, Ganzhou, China
- Department of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Institute of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
| | - Xiaofeng Zou
- Department of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Institute of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Department of Jiangxi Engineering Technology Research Center of Calculi Prevention, Gannan Medical University, Ganzhou, China
| | - Ruohui Huang
- Department of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Institute of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Department of Jiangxi Engineering Technology Research Center of Calculi Prevention, Gannan Medical University, Ganzhou, China
| | - Gang Xu
- Department of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Institute of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Department of Jiangxi Engineering Technology Research Center of Calculi Prevention, Gannan Medical University, Ganzhou, China
| | - Junrong Zou
- Department of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Institute of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Department of Jiangxi Engineering Technology Research Center of Calculi Prevention, Gannan Medical University, Ganzhou, China
| | - Guoxi Zhang
- Department of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Institute of Urology, First Affiliated Hospital of Gannan Medical University, Ganzhou, China
- Department of Jiangxi Engineering Technology Research Center of Calculi Prevention, Gannan Medical University, Ganzhou, China
- *Correspondence: Guoxi Zhang,
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21
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Veloza L, Cavalieri D, Missiaglia E, Ledoux-Pilon A, Bisig B, Pereira B, Bonnet C, Poullot E, Quintanilla-Martinez L, Dubois R, Llamas-Gutierrez F, Bossard C, De Wind R, Drieux F, Fontaine J, Parrens M, Sandrini J, Fataccioli V, Delfau-Larue MH, Daniel A, Lhomme F, Clément-Filliatre L, Lemonnier F, Cairoli A, Morel P, Glaisner S, Joly B, El Yamani A, Laribi K, Bachy E, Siebert R, Vallois D, Gaulard P, Tournilhac O, de Leval L. Monomorphic epitheliotropic intestinal T-cell lymphoma comprises morphologic and genomic heterogeneity impacting outcome. Haematologica 2022; 108:181-195. [PMID: 35708139 PMCID: PMC9827163 DOI: 10.3324/haematol.2022.281226] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Indexed: 02/05/2023] Open
Abstract
Monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL) is a rare aggressive T-cell lymphoma most reported in Asia. We performed a comprehensive clinical, pathological and genomic study of 71 European MEITL patients (36 males, 35 females, median age 67 years). The majority presented with gastrointestinal involvement and had emergency surgery, and 40% had stage IV disease. The tumors were morphologically classified into two groups: typical (58%) and atypical (i.e., non-monomorphic or with necrosis, angiotropism or starry-sky pattern) (42%), sharing a homogeneous immunophenotypic profile (CD3+ [98%] CD4- [94%] CD5- [97%] CD7+ [97%] CD8+ [90%] CD56+ [86%] CD103+ [80%] cytotoxic marker+ [98%]) with more frequent expression of TCRgd (50%) than TCRab (32%). MYC expression (30% of cases) partly reflecting MYC gene locus alterations, correlated with non-monomorphic cytology. Almost all cases (97%) harbored deleterious mutation(s) and/or deletion of the SETD2 gene and 90% had defective H3K36 trimethylation. Other frequently mutated genes were STAT5B (57%), JAK3 (50%), TP53 (35%), JAK1 (12.5%), BCOR and ATM (11%). Both TP53 mutations and MYC expression correlated with atypical morphology. The median overall survival (OS) of 63 patients (43/63 only received chemotherapy after initial surgery) was 7.8 months. Multivariate analysis found a strong negative impact on outcome of MYC expression, TP53 mutation, STAT5B mutation and poor performance status while aberrant B-cell marker expression (20% of cases) correlated with better survival. In conclusion, MEITL is an aggressive disease with resistance to conventional therapy, predominantly characterized by driver gene alterations deregulating histone methylation and JAK/STAT signaling and encompasses genetic and morphologic variants associated with very high clinical risk.
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Affiliation(s)
- Luis Veloza
- Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland,LV and DC contributed equally as co-first authors
| | - Doriane Cavalieri
- Department of Hematology, University Hospital of Clermont-Ferrand, EA7453 CIC1405, Université Clermont Auvergne, Clermont-Ferrand, France,LV and DC contributed equally as co-first authors
| | - Edoardo Missiaglia
- Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland
| | - Albane Ledoux-Pilon
- Department of Pathology, University Hospital of Clermont-Ferrand, Clermont-Ferrand, France
| | - Bettina Bisig
- Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland
| | - Bruno Pereira
- Clinical Research Direction, University Hospital of Clermont-Ferrand, Clermont-Ferrand, France
| | - Christophe Bonnet
- Department of Hematology, University Hospital Sart Tilman, Liège, Belgium
| | - Elsa Poullot
- AP-HP, Henri Mondor Hospital, Pathology Department, Créteil, France
| | | | - Romain Dubois
- Department of Pathology, University Hospital of Lille, Lille, France
| | | | | | - Roland De Wind
- Department of Pathology, Institute Jules Bordet, Bruxelles, Belgique
| | - Fanny Drieux
- Service of Anatomical and Cytological Pathology, Center Henri Becquerel, Rouen, France
| | - Juliette Fontaine
- Multisite Pathology Institute, Hôpital Lyon Sud, Hospices Civils de Lyon, Pierre Bénite, France
| | - Marie Parrens
- Department of Pathology, CHU de Bordeaux, University of Bordeaux, Bordeaux, France
| | - Jeremy Sandrini
- Department of Pathology, Le Mans Hospital Center, Le Mans, France
| | - Virginie Fataccioli
- AP-HP, Henri Mondor Hospital, Pathology Department, Créteil, France,University Paris Est Créteil, INSERM, IMRB, Créteil, France
| | - Marie-Hélène Delfau-Larue
- University Paris Est Créteil, INSERM, IMRB, Créteil, France,Department of Immunobiology and INSERM U955, Henri Mondor University Hospital, Créteil, France
| | - Adrien Daniel
- Department of Hematology, University Hospital of Lille, Lille, France
| | - Faustine Lhomme
- Department of Hematology, University Hospital of Rennes, Hospital Pontchaillou, Rennes, France
| | | | - François Lemonnier
- University Paris Est Créteil, INSERM, IMRB, Créteil, France,AP-HP, Henri Mondor Hospital, Lymphoid Malignancies Unit, Créteil, France
| | - Anne Cairoli
- Service of Hematology, Department of Oncology, Lausanne University, Hospital and Lausanne University, Lausanne, Switzerland
| | - Pierre Morel
- Department of Hematology, Hospital of Lens, Lens and Department of Hematology, University Hospital of Amiens, Amiens, France
| | - Sylvie Glaisner
- Department of Hematology, Institute Curie, Hospital Rene Huguenin, Saint-Cloud, France
| | - Bertrand Joly
- Department of Hematology, Sud-Francilien Hospital Center, Corbeil-Essonnes, France
| | | | - Kamel Laribi
- Department of Hematology, Hospital Center Le Mans, Le Mans, France
| | - Emmanuel Bachy
- Department of Hematology, Center Hospitalier Lyon Sud and INSERM U1111, Pierre Bénite, France
| | - Reiner Siebert
- Institute of Human Genetics, Ulm University and Ulm University Medical Center, Ulm, Germany
| | - David Vallois
- Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland
| | - Philippe Gaulard
- AP-HP, Henri Mondor Hospital, Pathology Department, Créteil, France,University Paris Est Créteil, INSERM, IMRB, Créteil, France,PG, OT and LdL contributed equally as co-senior authors
| | - Olivier Tournilhac
- Department of Hematology, University Hospital of Clermont-Ferrand, EA7453 CIC1405, Université Clermont Auvergne, Clermont-Ferrand, France,PG, OT and LdL contributed equally as co-senior authors
| | - Laurence de Leval
- Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland,PG, OT and LdL contributed equally as co-senior authors
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Hue SSS, Ng SB, Wang S, Tan SY. Cellular Origins and Pathogenesis of Gastrointestinal NK- and T-Cell Lymphoproliferative Disorders. Cancers (Basel) 2022; 14:2483. [PMID: 35626087 PMCID: PMC9139583 DOI: 10.3390/cancers14102483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/08/2022] [Accepted: 05/13/2022] [Indexed: 11/25/2022] Open
Abstract
The intestinal immune system, which must ensure appropriate immune responses to both pathogens and commensal microflora, comprises innate lymphoid cells and various T-cell subsets, including intra-epithelial lymphocytes (IELs). An example of innate lymphoid cells is natural killer cells, which may be classified into tissue-resident, CD56bright NK-cells that serve a regulatory function and more mature, circulating CD56dim NK-cells with effector cytolytic properties. CD56bright NK-cells in the gastrointestinal tract give rise to indolent NK-cell enteropathy and lymphomatoid gastropathy, as well as the aggressive extranodal NK/T cell lymphoma, the latter following activation by EBV infection and neoplastic transformation. Conventional CD4+ TCRαβ+ and CD8αβ+ TCRαβ+ T-cells are located in the lamina propria and the intraepithelial compartment of intestinal mucosa as type 'a' IELs. They are the putative cells of origin for CD4+ and CD8+ indolent T-cell lymphoproliferative disorders of the gastrointestinal tract and intestinal T-cell lymphoma, NOS. In addition to such conventional T-cells, there are non-conventional T-cells in the intra-epithelial compartment that express CD8αα and innate lymphoid cells that lack TCRs. The central feature of type 'b' IELs is the expression of CD8αα homodimers, seen in monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL), which primarily arises from both CD8αα+ TCRαβ+ and CD8αα+ TCRγδ+ IELs. EATL is the other epitheliotropic T-cell lymphoma in the GI tract, a subset of which arises from the expansion and reprograming of intracytoplasmic CD3+ innate lymphoid cells, driven by IL15 and mutations of the JAK-STAT pathway.
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Affiliation(s)
- Susan Swee-Shan Hue
- Department of Pathology, National University Hospital, Singapore 119074, Singapore; (S.S.-S.H.); (S.W.)
| | - Siok-Bian Ng
- Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119074, Singapore;
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore
| | - Shi Wang
- Department of Pathology, National University Hospital, Singapore 119074, Singapore; (S.S.-S.H.); (S.W.)
| | - Soo-Yong Tan
- Department of Pathology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119074, Singapore;
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23
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Targeted Next-generation Sequencing Reveals a Wide Morphologic and Immunophenotypic Spectrum of Monomorphic Epitheliotropic Intestinal T-Cell Lymphoma. Am J Surg Pathol 2022; 46:1207-1218. [PMID: 35551151 DOI: 10.1097/pas.0000000000001914] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Primary intestinal T-cell lymphoma (PITL) is highly aggressive and includes celiac disease-related enteropathy-associated T-cell lymphoma (EATL), monomorphic epitheliotropic intestinal T-cell lymphoma (MEITL), and primary intestinal peripheral T-cell lymphoma, not otherwise specified (ITCL-NOS). MEITL is the most common PITL in Asia, comprising of monomorphic medium-sized cells typically expressing CD8, CD56, and cytotoxic granules. Occasional cases with intermediate features between MEITL and ITCL-NOS are difficult to be classified and warrant further investigation. We collected 54 surgically resected PITLs from Taiwan, with 80% presenting with bowel perforation. The overall outcome was poor with a median survival of 7 months. Based on histopathology (monomorphic vs. pleomorphic) and immunophenotype, we classified these cases into 4 groups: MEITL with typical immunophenotype (n=34), MEITL with atypical immunophenotype (n=5), pleomorphic PITL with MEITL-like immunophenotype (n=6), and ITCL-NOS (n=9). There was no EATL in our cohort. Targeted next-generation sequencing of the first 3 groups showed highly prevalent loss-of-function mutations for SETD2 (85%, 80%, and 83%, respectively) and frequent activating mutations for STAT5B (64%, 60%, and 50%, respectively) and JAK3 (38%, 20%, and 50%, respectively). In contrast, ITCL-NOS cases had less frequent mutations of SETD2 (56%) and STAT5B (11%) and rare JAK3 mutations (11%). Our results suggest that there is a wider morphologic and immunophenotypic spectrum of MEITL as currently defined in the 2017 WHO classification. MEITL with atypical immunophenotype and PITL with MEITL-like immunophenotype shared clinicopathologic and molecular features similar to MEITL but distinct from ITCL-NOS, indicating that such cases may be considered as immunophenotypic or histopathologic variants of MEITL.
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Yim J, Koh J, Kim S, Song SG, Bae JM, Yun H, Sung JY, Kim TM, Park SH, Jeon YK. Clinicopathologic and Genetic Features of Primary T-cell Lymphomas of the Central Nervous System: An Analysis of 11 Cases Using Targeted Gene Sequencing. Am J Surg Pathol 2022; 46:486-497. [PMID: 34980830 PMCID: PMC8923358 DOI: 10.1097/pas.0000000000001859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Primary central nervous system lymphoma (PCNSL) of peripheral T-cell lineage (T-PCNSL) is rare, and its genetic and clinicopathologic features remain unclear. Here, we present 11 cases of T-PCNSL in immunocompetent individuals from a single institute, focusing on their genetic alterations. Seven cases were subject to targeted panel sequencing covering 120 lymphoma-related genes. Nine of the eleven cases were classified as peripheral T-cell lymphoma, not otherwise specified (PTCL-NOS), of which one was of γδT-cell lineage. There was one case of anaplastic lymphoma kinase-positive anaplastic large cell lymphoma and another of extranodal natural killer (NK)/T-cell lymphoma (ENKTL) of αβT-cell lineage. The male to female ratio was 7 : 4 and the age ranged from 3 to 75 years (median, 61 y). Most patients presented with neurological deficits (n=10) and showed multifocal lesions (n=9) and deep brain structure involvement (n=9). Tumor cells were mostly small-to-medium, and T-cell monoclonality was detected in all nine evaluated cases. PTCL-NOS was CD4-positive (n=4), CD8-positive (n=3), mixed CD4-positive and CD8-positive (n=1), or CD4/CD8-double-negative (n=1, γδT-cell type). Cytotoxic molecule expression was observed in 4 (67%) of the 6 evaluated cases. Pathogenic alterations were found in 4 patients: one PTCL-NOS case had a frameshift mutation in KMT2C, another PTCL-NOS case harbored a truncating mutation in TET2, and another (γδT-cell-PTCL-NOS) harbored NRAS G12S and JAK3 M511I mutations, and homozygous deletions of CDKN2A and CDKN2B. The ENKTL (αβT-cell lineage) case harbored mutations in genes ARID1B, FAS, TP53, BCOR, KMT2C, POT1, and PRDM1. In conclusion, most of the T-PCNSL were PTCL-NOS, but sporadic cases of other subtypes including γδT-cell lymphoma, anaplastic lymphoma kinase-positive anaplastic large cell lymphoma, and ENKTL were also encountered. Immunophenotypic analysis, clonality test, and targeted gene sequencing along with clinicoradiologic evaluation, may be helpful for establishing the diagnosis of T-PCNSL. Moreover, this study demonstrates genetic alterations with potential diagnostic and therapeutic utility in T-PCNSL.
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MESH Headings
- Adolescent
- Adult
- Aged
- Anaplastic Lymphoma Kinase/metabolism
- Central Nervous System Neoplasms/genetics
- Central Nervous System Neoplasms/metabolism
- Central Nervous System Neoplasms/pathology
- Child
- Child, Preschool
- Female
- Humans
- Lymphoma, Extranodal NK-T-Cell/genetics
- Lymphoma, Extranodal NK-T-Cell/metabolism
- Lymphoma, Extranodal NK-T-Cell/pathology
- Lymphoma, Large-Cell, Anaplastic/genetics
- Lymphoma, Large-Cell, Anaplastic/metabolism
- Lymphoma, Large-Cell, Anaplastic/pathology
- Lymphoma, T-Cell, Peripheral/genetics
- Lymphoma, T-Cell, Peripheral/metabolism
- Lymphoma, T-Cell, Peripheral/pathology
- Male
- Middle Aged
- Young Adult
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Affiliation(s)
| | - Jiwon Koh
- Department of Pathology
- Center for Precision Medicine, Seoul National University Hospital
| | - Sehui Kim
- Department of Pathology
- Department of Pathology, Severance Hospital, Yonsei University College of Medicine
| | | | - Jeong Mo Bae
- Department of Pathology
- Center for Precision Medicine, Seoul National University Hospital
| | - Hongseok Yun
- Center for Precision Medicine, Seoul National University Hospital
| | - Ji-Youn Sung
- Department of Pathology, Kyung Hee University School of Medicine
| | - Tae Min Kim
- Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine
- Cancer Research Institute, Seoul National University, Seoul, Republic of Korea
| | | | - Yoon Kyung Jeon
- Department of Pathology
- Cancer Research Institute, Seoul National University, Seoul, Republic of Korea
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25
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Zhuang Y, Che J, Wu M, Guo Y, Xu Y, Dong X, Yang H. Altered pathways and targeted therapy in double hit lymphoma. J Hematol Oncol 2022; 15:26. [PMID: 35303910 PMCID: PMC8932183 DOI: 10.1186/s13045-022-01249-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 03/07/2022] [Indexed: 12/20/2022] Open
Abstract
High-grade B-cell lymphoma with translocations involving MYC and BCL2 or BCL6, usually referred to as double hit lymphoma (DHL), is an aggressive hematological malignance with distinct genetic features and poor clinical prognosis. Current standard chemoimmunotherapy fails to confer satisfying outcomes and few targeted therapeutics are available for the treatment against DHL. Recently, the delineating of the genetic landscape in tumors has provided insight into both biology and targeted therapies. Therefore, it is essential to understand the altered signaling pathways of DHL to develop treatment strategies with better clinical benefits. Herein, we summarized the genetic alterations in the two DHL subtypes (DHL-BCL2 and DHL-BCL6). We further elucidate their implications on cellular processes, including anti-apoptosis, epigenetic regulations, B-cell receptor signaling, and immune escape. Ongoing and potential therapeutic strategies and targeted drugs steered by these alterations were reviewed accordingly. Based on these findings, we also discuss the therapeutic vulnerabilities that coincide with these genetic changes. We believe that the understanding of the DHL studies will provide insight into this disease and capacitate the finding of more effective treatment strategies.
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Affiliation(s)
- Yuxin Zhuang
- Department of Lymphoma, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, People’s Republic of China
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People’s Republic of China
| | - Jinxin Che
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People’s Republic of China
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou, People’s Republic of China
| | - Meijuan Wu
- Department of Pathology, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, People’s Republic of China
| | - Yu Guo
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou, People’s Republic of China
| | - Yongjin Xu
- Department of Lymphoma, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, People’s Republic of China
| | - Xiaowu Dong
- Hangzhou Institute of Innovative Medicine, Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, People’s Republic of China
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou, People’s Republic of China
- Cancer Center, Zhejiang University, Hangzhou, People’s Republic of China
| | - Haiyan Yang
- Department of Lymphoma, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, People’s Republic of China
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26
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Targeted genome-wide SNP genotyping in feral horses using non-invasive fecal swabs. CONSERV GENET RESOUR 2022; 14:203-213. [PMID: 35673611 PMCID: PMC9162989 DOI: 10.1007/s12686-022-01259-2] [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: 09/01/2021] [Accepted: 02/24/2022] [Indexed: 11/22/2022]
Abstract
The development of high-throughput sequencing has prompted a transition in wildlife genetics from using microsatellites toward sets of single nucleotide polymorphisms (SNPs). However, genotyping large numbers of targeted SNPs using non-invasive samples remains challenging due to relatively large DNA input requirements. Recently, target enrichment has emerged as a promising approach requiring little template DNA. We assessed the efficacy of Tecan Genomics’ Allegro Targeted Genotyping (ATG) for generating genome-wide SNP data in feral horses using DNA isolated from fecal swabs. Total and host-specific DNA were quantified for 989 samples collected as part of a long-term individual-based study of feral horses on Sable Island, Nova Scotia, Canada, using dsDNA fluorescence and a host-specific qPCR assay, respectively. Forty-eight samples representing 44 individuals containing at least 10 ng of host DNA (ATG’s recommended minimum input) were genotyped using a custom multiplex panel targeting 279 SNPs. Genotyping accuracy and consistency were assessed by contrasting ATG genotypes with those obtained from the same individuals with SNP microarrays, and from multiple samples from the same horse, respectively. 62% of swabs yielded the minimum recommended amount of host DNA for ATG. Ignoring samples that failed to amplify, ATG recovered an average of 88.8% targeted sites per sample, while genotype concordance between ATG and SNP microarrays was 98.5%. The repeatability of genotypes from the same individual approached unity with an average of 99.9%. This study demonstrates the suitability of ATG for genome-wide, non-invasive targeted SNP genotyping, and will facilitate further ecological and conservation genetics research in equids and related species.
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27
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Ta R, Hasserjian RP, Nardi V. An unusual lymphoma involving the GI tract and bone marrow. Am J Hematol 2022; 97:1268-1269. [PMID: 35253942 DOI: 10.1002/ajh.26513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/17/2022] [Accepted: 02/28/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Robert Ta
- Department of Pathology Massachusetts General Hospital, Harvard Medical School Boston Massachusetts USA
| | - Robert Paul Hasserjian
- Department of Pathology Massachusetts General Hospital, Harvard Medical School Boston Massachusetts USA
| | - Valentina Nardi
- Department of Pathology Massachusetts General Hospital, Harvard Medical School Boston Massachusetts USA
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28
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Genetic profiling and biomarkers in peripheral T-cell lymphomas: current role in the diagnostic work-up. Mod Pathol 2022; 35:306-318. [PMID: 34584212 DOI: 10.1038/s41379-021-00937-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 11/08/2022]
Abstract
Peripheral T-cell lymphomas are a heterogeneous, and usually aggressive, group of mature T-cell neoplasms with overlapping clinical, morphologic and immunologic features. A large subset of these neoplasms remains unclassifiable with current diagnostic methods ("not otherwise specified"). Genetic profiling and other molecular tools have emerged as widely applied and transformative technologies for discerning the biology of lymphomas and other hematopoietic neoplasms. Although the application of these technologies to peripheral T-cell lymphomas has lagged behind B-cell lymphomas and other cancers, molecular profiling has provided novel prognostic and diagnostic markers as well as an opportunity to understand the biologic mechanisms involved in the pathogenesis of these neoplasms. Some biomarkers are more prevalent in specific T-cell lymphoma subsets and are being used currently in the diagnosis and/or risk stratification of patients with peripheral T-cell lymphomas. Other biomarkers, while promising, need to be validated in larger clinical studies. In this review, we present a summary of our current understanding of the molecular profiles of the major types of peripheral T-cell lymphoma. We particularly focus on the use of biomarkers, including those that can be detected by conventional immunohistochemical studies and those that contribute to the diagnosis, classification, or risk stratification of these neoplasms.
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29
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Cording S, Lhermitte L, Malamut G, Berrabah S, Trinquand A, Guegan N, Villarese P, Kaltenbach S, Meresse B, Khater S, Dussiot M, Bras M, Cheminant M, Tesson B, Bole-Feysot C, Bruneau J, Molina TJ, Sibon D, Macintyre E, Hermine O, Cellier C, Asnafi V, Cerf-Bensussan N. Oncogenetic landscape of lymphomagenesis in coeliac disease. Gut 2022; 71:497-508. [PMID: 33579790 PMCID: PMC8862029 DOI: 10.1136/gutjnl-2020-322935] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 01/26/2021] [Accepted: 01/27/2021] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Enteropathy-associated T-cell lymphoma (EATL) is a rare but severe complication of coeliac disease (CeD), often preceded by low-grade clonal intraepithelial lymphoproliferation, referred to as type II refractory CeD (RCDII). Knowledge on underlying oncogenic mechanisms remains scarce. Here, we analysed and compared the mutational landscape of RCDII and EATL in order to identify genetic drivers of CeD-associated lymphomagenesis. DESIGN Pure populations of RCDII-cells derived from intestinal biopsies (n=9) or sorted from blood (n=2) were analysed by whole exome sequencing, comparative genomic hybridisation and RNA sequencing. Biopsies from RCDII (n=50), EATL (n=19), type I refractory CeD (n=7) and uncomplicated CeD (n=18) were analysed by targeted next-generation sequencing. Moreover, functional in vitro studies and drug testing were performed in RCDII-derived cell lines. RESULTS 80% of RCDII and 90% of EATL displayed somatic gain-of-functions mutations in the JAK1-STAT3 pathway, including a remarkable p.G1097 hotspot mutation in the JAK1 kinase domain in approximately 50% of cases. Other recurrent somatic events were deleterious mutations in nuclear factor kappa-light-chain-enhancer of activated B-cells (NF-κB) regulators TNFAIP3 and TNIP3 and potentially oncogenic mutations in TET2, KMT2D and DDX3X. JAK1 inhibitors, and the proteasome inhibitor bortezomib could block survival and proliferation of malignant RCDII-cell lines. CONCLUSION Mutations activating the JAK1-STAT3 pathway appear to be the main drivers of CeD-associated lymphomagenesis. In concert with mutations in negative regulators of NF-κB, they may favour the clonal emergence of malignant lymphocytes in the cytokine-rich coeliac intestine. The identified mutations are attractive therapeutic targets to treat RCDII and block progression towards EATL.
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Affiliation(s)
- Sascha Cording
- Université de Paris, Imagine Institute, Laboratory of Intestinal Immunity, INSERM UMR 1163, Paris, France
| | - Ludovic Lhermitte
- Université de Paris, Institut Necker-Enfants Malades, INSERM UMR 1151, Paris, France,Laboratory of Onco-Haematology, AP-HP, Hôpital Necker Enfants-Malades, Paris, France
| | - Georgia Malamut
- Université de Paris, Imagine Institute, Laboratory of Intestinal Immunity, INSERM UMR 1163, Paris, France,Department of Gastroenterology, AP-HP, Hôpital Cochin, Paris, France
| | - Sofia Berrabah
- Université de Paris, Imagine Institute, Laboratory of Intestinal Immunity, INSERM UMR 1163, Paris, France
| | - Amélie Trinquand
- Université de Paris, Imagine Institute, Laboratory of Intestinal Immunity, INSERM UMR 1163, Paris, France,Haematology Department, National Children’s Research Centre, Children’s Health Ireland at Crumlin, Dublin, Ireland
| | - Nicolas Guegan
- Université de Paris, Imagine Institute, Laboratory of Intestinal Immunity, INSERM UMR 1163, Paris, France
| | - Patrick Villarese
- Université de Paris, Institut Necker-Enfants Malades, INSERM UMR 1151, Paris, France,Laboratory of Onco-Haematology, AP-HP, Hôpital Necker Enfants-Malades, Paris, France
| | - Sophie Kaltenbach
- Department of Cytogenetics, AP-HP, Hôpital Necker Enfants-Malades, Paris, France
| | - Bertrand Meresse
- Université de Lille, CHU Lille, INSERM UMR 1286 – INFINITE – Institute for Translational Research in Inflammation, Lille, France
| | - Sherine Khater
- Department of Gastroenterology, AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| | - Michael Dussiot
- Université de Paris, Imagine Institute, Laboratory of Molecular Mechanisms of Hematological Disorders and Therapeutic Implications, INSERM UMR 1163, Paris, France
| | - Marc Bras
- Université de Paris, Imagine Institute, Bioinformatics Platform, Paris, France
| | - Morgane Cheminant
- Université de Paris, Imagine Institute, Laboratory of Molecular Mechanisms of Hematological Disorders and Therapeutic Implications, INSERM UMR 1163, Paris, France,Clinical Haematology, AP-HP, Hôpital Necker Enfants-Malades, Paris, France
| | | | | | - Julie Bruneau
- Department of Pathology, AP-HP, Hôpital Necker Enfants-Malades, Paris, France
| | - Thierry Jo Molina
- Université de Paris, Imagine Institute, Laboratory of Molecular Mechanisms of Hematological Disorders and Therapeutic Implications, INSERM UMR 1163, Paris, France,Department of Pathology, AP-HP, Hôpital Necker Enfants-Malades, Paris, France
| | - David Sibon
- Clinical Haematology, AP-HP, Hôpital Necker Enfants-Malades, Paris, France
| | - Elizabeth Macintyre
- Université de Paris, Institut Necker-Enfants Malades, INSERM UMR 1151, Paris, France,Laboratory of Onco-Haematology, AP-HP, Hôpital Necker Enfants-Malades, Paris, France
| | - Olivier Hermine
- Université de Paris, Imagine Institute, Laboratory of Molecular Mechanisms of Hematological Disorders and Therapeutic Implications, INSERM UMR 1163, Paris, France,Clinical Haematology, AP-HP, Hôpital Necker Enfants-Malades, Paris, France
| | - Christophe Cellier
- Department of Gastroenterology, AP-HP, Hôpital Européen Georges Pompidou, Paris, France
| | - Vahid Asnafi
- Université de Paris, Institut Necker-Enfants Malades, INSERM UMR 1151, Paris, France,Laboratory of Onco-Haematology, AP-HP, Hôpital Necker Enfants-Malades, Paris, France
| | - Nadine Cerf-Bensussan
- Université de Paris, Imagine Institute, Laboratory of Intestinal Immunity, INSERM UMR 1163, Paris, France
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30
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Leysen H, Walter D, Christiaenssen B, Vandoren R, Harputluoğlu İ, Van Loon N, Maudsley S. GPCRs Are Optimal Regulators of Complex Biological Systems and Orchestrate the Interface between Health and Disease. Int J Mol Sci 2021; 22:ijms222413387. [PMID: 34948182 PMCID: PMC8708147 DOI: 10.3390/ijms222413387] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 02/06/2023] Open
Abstract
GPCRs arguably represent the most effective current therapeutic targets for a plethora of diseases. GPCRs also possess a pivotal role in the regulation of the physiological balance between healthy and pathological conditions; thus, their importance in systems biology cannot be underestimated. The molecular diversity of GPCR signaling systems is likely to be closely associated with disease-associated changes in organismal tissue complexity and compartmentalization, thus enabling a nuanced GPCR-based capacity to interdict multiple disease pathomechanisms at a systemic level. GPCRs have been long considered as controllers of communication between tissues and cells. This communication involves the ligand-mediated control of cell surface receptors that then direct their stimuli to impact cell physiology. Given the tremendous success of GPCRs as therapeutic targets, considerable focus has been placed on the ability of these therapeutics to modulate diseases by acting at cell surface receptors. In the past decade, however, attention has focused upon how stable multiprotein GPCR superstructures, termed receptorsomes, both at the cell surface membrane and in the intracellular domain dictate and condition long-term GPCR activities associated with the regulation of protein expression patterns, cellular stress responses and DNA integrity management. The ability of these receptorsomes (often in the absence of typical cell surface ligands) to control complex cellular activities implicates them as key controllers of the functional balance between health and disease. A greater understanding of this function of GPCRs is likely to significantly augment our ability to further employ these proteins in a multitude of diseases.
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Affiliation(s)
- Hanne Leysen
- Receptor Biology Lab, University of Antwerp, 2610 Wilrijk, Belgium; (H.L.); (D.W.); (B.C.); (R.V.); (İ.H.); (N.V.L.)
| | - Deborah Walter
- Receptor Biology Lab, University of Antwerp, 2610 Wilrijk, Belgium; (H.L.); (D.W.); (B.C.); (R.V.); (İ.H.); (N.V.L.)
| | - Bregje Christiaenssen
- Receptor Biology Lab, University of Antwerp, 2610 Wilrijk, Belgium; (H.L.); (D.W.); (B.C.); (R.V.); (İ.H.); (N.V.L.)
| | - Romi Vandoren
- Receptor Biology Lab, University of Antwerp, 2610 Wilrijk, Belgium; (H.L.); (D.W.); (B.C.); (R.V.); (İ.H.); (N.V.L.)
| | - İrem Harputluoğlu
- Receptor Biology Lab, University of Antwerp, 2610 Wilrijk, Belgium; (H.L.); (D.W.); (B.C.); (R.V.); (İ.H.); (N.V.L.)
- Department of Chemistry, Middle East Technical University, Çankaya, Ankara 06800, Turkey
| | - Nore Van Loon
- Receptor Biology Lab, University of Antwerp, 2610 Wilrijk, Belgium; (H.L.); (D.W.); (B.C.); (R.V.); (İ.H.); (N.V.L.)
| | - Stuart Maudsley
- Receptor Biology Lab, University of Antwerp, 2610 Wilrijk, Belgium; (H.L.); (D.W.); (B.C.); (R.V.); (İ.H.); (N.V.L.)
- Correspondence:
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31
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Chen C, Gong Y, Yang Y, Xia Q, Rao Q, Shao Y, Zhu L, Zhang J, Li X, Ji P, Zhai B, Zhang X, Zhang Z. Clinicopathological and molecular genomic features of monomorphic epitheliotropic intestinal T-cell lymphoma in the Chinese population: a study of 20 cases. Diagn Pathol 2021; 16:114. [PMID: 34895266 PMCID: PMC8667391 DOI: 10.1186/s13000-021-01173-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 11/22/2021] [Indexed: 01/14/2023] Open
Abstract
Background Monomorphic epitheliotropic T-cell lymphoma (MEITL) is an aggressive non-Hodgkin lymphoma with a high fatality rate. This study was aimed to explore the clinicopathological and molecular genetic features of MEITL in the Chinese population. Methods A retrospective analysis was performed based on the clinical manifestations and pathological features of 20 Chinese MEITL. 9 cases with paired diseased-normal tissues were also analyzed for molecular information by whole-exome sequencing. Results There were 14 men and 6 women with a median age of 58.5 (28-81) years. 17(17/20) lesions were located in the jejunum or ileum; 13(13/20) cases had ulcers or perforations. Microscopically, except for 1(1/20) case of pleomorphic cells, the monomorphic, middle-sized tumor cells infiltrating into the intestinal epithelial and peripheral intestinal mucosa recess could be seen in the other 19 cases. Immunohistochemistry showed that most of the tumor cells in MEITL were positive for CD3(20/20), CD8(17/20), CD43(19/20), and CD56(15/20), but negative for CD5(20/20). The most frequently mutated genes of these Chinese cases were STAT5B (4/9) and TP53 (4/9), not SETD2(2/9). JAK3 mutations (3/9) were also detected with a high mutated frequency. We demonstrated that mutations of JAK-STAT pathway-related genes and the amplification of Chromosome 9q appeared at the same time in most cases(5/9). Conclusions The clinicopathological features were consistent with that in previous western studies, but a special case with pleomorphic cells was found in this study. The co-occurrence of JAK-STAT pathway-related gene mutations and the amplification of Chr9q is a molecular feature of MEITL. Supplementary Information The online version contains supplementary material available at 10.1186/s13000-021-01173-5.
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Affiliation(s)
- Chunni Chen
- Department of Pathology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, Jiangsu Province, China
| | - Yuxi Gong
- Department of Pathology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, Jiangsu Province, China
| | - Yefan Yang
- Department of Pathology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, Jiangsu Province, China
| | - Qiuyuan Xia
- Department of Pathology, Nanjing Jinling Hospital, Nanjing University School of Medicine, 210002, Nanjing, Jiangsu Province, China
| | - Qiu Rao
- Department of Pathology, Nanjing Jinling Hospital, Nanjing University School of Medicine, 210002, Nanjing, Jiangsu Province, China
| | - Yang Shao
- Nanjing Geneseeq Technology Inc, 210032, Nanjing, Jiangsu Province, China.,School of Public Health, Nanjing Medical University, 211166, Nanjing, Jiangsu Province, China
| | - Liuqing Zhu
- Nanjing Geneseeq Technology Inc, 210032, Nanjing, Jiangsu Province, China
| | - Junli Zhang
- Nanjing Geneseeq Technology Inc, 210032, Nanjing, Jiangsu Province, China
| | - Xiao Li
- Department of Pathology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, Jiangsu Province, China
| | - Pan Ji
- Department of Pathology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, Jiangsu Province, China
| | - Boya Zhai
- Department of Pathology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, Jiangsu Province, China
| | - Xiang Zhang
- Department of Pathology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, Jiangsu Province, China
| | - Zhihong Zhang
- Department of Pathology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, Jiangsu Province, China.
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Bigas A, Rodriguez-Sevilla JJ, Espinosa L, Gallardo F. Recent advances in T-cell lymphoid neoplasms. Exp Hematol 2021; 106:3-18. [PMID: 34879258 DOI: 10.1016/j.exphem.2021.12.191] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 11/29/2021] [Accepted: 12/02/2021] [Indexed: 12/14/2022]
Abstract
T Cells comprise many subtypes of specified lymphocytes, and their differentiation and function take place in different tissues. This cellular diversity is also observed in the multiple ways T-cell transformation gives rise to a variety of T-cell neoplasms. This review covers the main types of T-cell malignancies and their specific characteristics, emphasizing recent advances at the cellular and molecular levels as well as differences and commonalities among them.
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Affiliation(s)
- Anna Bigas
- Program in Cancer Research, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), CIBERONC, Barcelona, Spain; Institut Josep Carreras contra la Leucemia, Barcelona, Spain.
| | | | - Lluis Espinosa
- Program in Cancer Research, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), CIBERONC, Barcelona, Spain
| | - Fernando Gallardo
- Dermatology Department, Parc de Salut Mar-Hospital del Mar, Barcelona, Spain.
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Primary Gastrointestinal T-Cell Lymphoma and Indolent Lymphoproliferative Disorders: Practical Diagnostic and Treatment Approaches. Cancers (Basel) 2021; 13:cancers13225774. [PMID: 34830926 PMCID: PMC8616126 DOI: 10.3390/cancers13225774] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/15/2021] [Accepted: 11/16/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary It is challenging for pathologists to diagnose primary gastrointestinal T-cell neoplasms. Besides the rarity of the diseases, the small biopsy material makes it more difficult to differentiate between non-neoplastic inflammation and secondary involvement of extra gastrointestinal lymphoma. Since this group of diseases ranges from aggressive ones with a very poor prognosis to indolent ones that require caution to avoid overtreatment, the impact of the diagnosis on the patient is enormous. Although early treatment of aggressive lymphoma is essential, the treatment strategy is not well established, which is a problem for clinicians. This review provides a cross-sectional comparison of histological findings. Unlike previous reviews, we summarized up-to-date clinically relevant information including the treatment strategies as well as practical differential diagnosis based on thorough literature review. Abstract Primary gastrointestinal (GI) T-cell neoplasms are extremely rare heterogeneous disease entities with distinct clinicopathologic features. Given the different prognoses of various disease subtypes, clinicians and pathologists must be aware of the key characteristics of these neoplasms, despite their rarity. The two most common aggressive primary GI T-cell lymphomas are enteropathy-associated T-cell lymphoma and monomorphic epitheliotropic intestinal T-cell lymphoma. In addition, extranodal natural killer (NK)/T-cell lymphoma of the nasal type and anaplastic large cell lymphoma may also occur in the GI tract or involve it secondarily. In the revised 4th World Health Organization classification, indolent T-cell lymphoproliferative disorder of the GI tract has been incorporated as a provisional entity. In this review, we summarize up-to-date clinicopathological features of these disease entities, including the molecular characteristics of primary GI T-cell lymphomas and indolent lymphoproliferative disorders. We focus on the latest treatment approaches, which have not been summarized in existing reviews. Further, we provide a comprehensive review of available literature to address the following questions: How can pathologists discriminate subtypes with different clinical prognoses? How can primary GI neoplasms be distinguished from secondary involvement? How can these neoplasms be distinguished from non-specific inflammatory changes at an early stage?
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Kieslinger M, Swoboda A, Kramer N, Freund P, Pratscher B, Neubauer HA, Steinborn R, Wolfesberger B, Fuchs-Baumgartinger A, Moriggl R, Burgener IA. A Recurrent STAT5BN642H Driver Mutation in Feline Alimentary T Cell Lymphoma. Cancers (Basel) 2021; 13:5238. [PMID: 34680385 PMCID: PMC8534107 DOI: 10.3390/cancers13205238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/05/2021] [Indexed: 11/18/2022] Open
Abstract
Alimentary lymphomas arising from T cells are rare and aggressive malignancies in humans. In comparison, they represent the most common anatomical form of lymphoma in cats. Due to the low prevalence in humans, the underlying pathomechanism for these diseases is poorly characterised, limiting experimental analysis and therapeutic exploration. To date, activating mutations of the JAK/STAT core cancer pathway and particularly the STAT5B oncoprotein have been identified in human enteropathy-associated T cell lymphoma. Here, we describe a high homology of human and feline STAT3 and STAT5B proteins and strong conservation at the genomic level. Analysis of 42 samples of feline T cell alimentary lymphoma reveals broad activation of STAT3 and STAT5B. Screening for known activating mutations in STAT3 or STAT5B identifies the presence of the STAT5BN642H driver mutation in feline enteropathy-associated T cell lymphoma in 7 out of 42 (16.67%) samples in total. Regarding lymphoma subtypes, the majority of mutations with 5 out of 17 (29.41%) cases were found in feline enteropathy-associated lymphoma type II (EATL II). This identification of an oncogenic STAT5B driver mutation in felines recapitulates the genetic situation in the corresponding human disease, thereby establishing the cat as a potential new model for a rare and incurable human T cell disease.
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Affiliation(s)
- Matthias Kieslinger
- Department for Companion Animals and Horses, Division of Small Animal Internal Medicine, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (A.S.); (N.K.); (P.F.); (B.P.); (B.W.); (I.A.B.)
| | - Alexander Swoboda
- Department for Companion Animals and Horses, Division of Small Animal Internal Medicine, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (A.S.); (N.K.); (P.F.); (B.P.); (B.W.); (I.A.B.)
| | - Nina Kramer
- Department for Companion Animals and Horses, Division of Small Animal Internal Medicine, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (A.S.); (N.K.); (P.F.); (B.P.); (B.W.); (I.A.B.)
| | - Patricia Freund
- Department for Companion Animals and Horses, Division of Small Animal Internal Medicine, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (A.S.); (N.K.); (P.F.); (B.P.); (B.W.); (I.A.B.)
| | - Barbara Pratscher
- Department for Companion Animals and Horses, Division of Small Animal Internal Medicine, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (A.S.); (N.K.); (P.F.); (B.P.); (B.W.); (I.A.B.)
| | - Heidi A. Neubauer
- Department of Biomedical Sciences, Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (H.A.N.); (R.M.)
| | - Ralf Steinborn
- Genomics Core Facility, VetCore, University of Veterinary Medicine Vienna, 1210 Vienna, Austria;
| | - Birgitt Wolfesberger
- Department for Companion Animals and Horses, Division of Small Animal Internal Medicine, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (A.S.); (N.K.); (P.F.); (B.P.); (B.W.); (I.A.B.)
| | - Andrea Fuchs-Baumgartinger
- Department of Pathobiology, Institute of Pathology, University of Veterinary Medicine Vienna, 1210 Vienna, Austria;
| | - Richard Moriggl
- Department of Biomedical Sciences, Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (H.A.N.); (R.M.)
| | - Iwan A. Burgener
- Department for Companion Animals and Horses, Division of Small Animal Internal Medicine, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (A.S.); (N.K.); (P.F.); (B.P.); (B.W.); (I.A.B.)
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Li B, Wan Q, Li Z, Chng WJ. Janus Kinase Signaling: Oncogenic Criminal of Lymphoid Cancers. Cancers (Basel) 2021; 13:cancers13205147. [PMID: 34680295 PMCID: PMC8533975 DOI: 10.3390/cancers13205147] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 12/24/2022] Open
Abstract
Simple Summary Janus kinases (JAKs) are transmembrane receptors that pass signals from extracellular ligands to downstream. Increasing evidence has suggested that JAK family aberrations promote lymphoid cancer pathogenesis and progression through mediating gene expression via the JAK/STAT pathway or noncanonical JAK signaling. We are here to review how canonical JAK/STAT and noncanonical JAK signalings are represented and deregulated in lymphoid malignancies and how to target JAK for therapeutic purposes. Abstract The Janus kinase (JAK) family are known to respond to extracellular cytokine stimuli and to phosphorylate and activate signal transducers and activators of transcription (STAT), thereby modulating gene expression profiles. Recent studies have highlighted JAK abnormality in inducing over-activation of the JAK/STAT pathway, and that the cytoplasmic JAK tyrosine kinases may also have a nuclear role. A couple of anti-JAK therapeutics have been developed, which effectively harness lymphoid cancer cells. Here we discuss mutations and fusions leading to JAK deregulations, how upstream nodes drive JAK expression, how classical JAK/STAT pathways are represented in lymphoid malignancies and the noncanonical and nuclear role of JAKs. We also summarize JAK inhibition therapeutics applied alone or synergized with other drugs in treating lymphoid malignancies.
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Affiliation(s)
- Boheng Li
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; or (Q.W.)
| | - Qin Wan
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; or (Q.W.)
| | - Zhubo Li
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China; or (Q.W.)
- Correspondence: or (Z.L.); (W.-J.C.)
| | - Wee-Joo Chng
- Department of Haematology-Oncology, National University Cancer Institute of Singapore, Singapore 119074, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore
- Correspondence: or (Z.L.); (W.-J.C.)
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Torii K, Okada Y, Morita A. Determining the immune environment of cutaneous T-cell lymphoma lesions through the assessment of lesional blood drops. Sci Rep 2021; 11:19629. [PMID: 34608214 PMCID: PMC8490448 DOI: 10.1038/s41598-021-98804-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 09/14/2021] [Indexed: 12/28/2022] Open
Abstract
Detailed analysis of the cells that infiltrate lesional skin cannot be performed in skin biopsy specimens using immunohistochemistry or cell separation techniques because enzyme treatments applied during the isolation step can destroy small amounts of protein and minor cell populations in the biopsy specimen. Here, we describe a method for isolating T cells from drops of whole blood obtained from lesions during skin biopsy in patients with cutaneous T-cell lymphoma. Lesional blood is assumed to contain lesional resident cells, cells from capillary vessels, and blood overflowing from capillary vessels into the lesion area. The lesional blood showed substantial increases in distinct cell populations, chemokines, and the expression of various genes. The proportion of CD8+CD45RO+ T cells in the lesional blood negatively correlated with the modified severity-weighted assessment tool scores. CD4+CD45RO+ T cells in the lesional blood expressed genes associated with the development of cancer and progression of cutaneous T-cell lymphoma. In addition, CD8+CD45RO+ T cells in lesional blood had unique T-cell receptor repertoires in lesions of each stage. Assessment of lesional blood drops might provide new insight into the pathogenesis of mycosis fungoides and facilitate evaluation of the treatment efficacy for mycosis fungoides as well as other skin inflammatory diseases.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/blood
- Disease Management
- Disease Susceptibility
- Female
- Humans
- Immunohistochemistry
- Immunophenotyping
- Lymphocyte Count
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Lymphocytes, Tumor-Infiltrating/pathology
- Lymphoma, T-Cell, Cutaneous/blood
- Lymphoma, T-Cell, Cutaneous/diagnosis
- Lymphoma, T-Cell, Cutaneous/etiology
- Male
- Middle Aged
- Neoplasm Staging
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/metabolism
- T-Lymphocyte Subsets/immunology
- T-Lymphocyte Subsets/metabolism
- T-Lymphocyte Subsets/pathology
- Tumor Microenvironment/immunology
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Affiliation(s)
- Kan Torii
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Mizuho-Ku, Nagoya, 467-8601, Japan
| | - Yukinori Okada
- Department of Statistical Genetics, Osaka University Graduate School of Medicine, Osaka, Japan
- Laboratory of Statistical Immunology, Immunology Frontier Research Center (WPI-IFReC), Osaka University, Suita, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan
| | - Akimichi Morita
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Mizuho-Ku, Nagoya, 467-8601, Japan.
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Zhang X, Zhou J, Han X, Wang E, Zhang L. Update on the Classification and Diagnostic Approaches of Mature T-Cell Lymphomas. Arch Pathol Lab Med 2021; 146:947-952. [PMID: 34524423 DOI: 10.5858/arpa.2021-0143-ra] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2021] [Indexed: 11/06/2022]
Abstract
CONTEXT.— In the 2017 revised World Health Organization classification of tumors of hematopoietic and lymphoid tissues, some mature T-cell lymphomas are reclassified and a few new provisional entities are established based on new data from clinical and laboratory studies. T follicular helper cell lymphoma is identified by T follicular helper cell markers. Anaplastic large cell lymphoma, ALK negative, is a better-defined entity based on genetic abnormalities, and breast implant-associated anaplastic large cell lymphoma is recognized as a provisional entity. The gastrointestinal T-cell lymphomas are reclassified, with addition of a new provisional entity, indolent T-cell lymphoproliferative disorder of the gastrointestinal tract, characterized by an indolent clinical course. OBJECTIVE.— To review the diagnostic approaches of reclassified and newly established entities of mature T-cell lymphomas, focusing on significant immunophenotypic features and molecular genetic abnormalities. Relevant new discoveries after the publication of the 2017 World Health Organization classification are included. DATA SOURCES.— Information from the literature most relevant to 2017 World Health Organization revised classification and publications after 2016. CONCLUSIONS.— Incorporating clinical, morphologic, and immunophenotypic features usually provides sufficient evidence to reach a preliminary diagnosis of mature T-cell lymphoma. Molecular genetic studies can be very helpful for the final diagnosis and classification, especially in challenging cases. Some molecular genetic features have been found in breast implant-associated anaplastic large cell lymphoma, distinct from anaplastic large cell lymphoma, ALK negative. Immunohistochemical staining of 4 markers may enable further subtyping of peripheral T-cell lymphomas.
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Affiliation(s)
- Xiaohui Zhang
- From the Department of Pathology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida (X. Zhang)
| | - Jiehao Zhou
- The Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis (Zhou)
| | - Xin Han
- The Department of Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston (Han)
| | - Endi Wang
- The Department of Pathology, Duke University Medical Center, Durham, North Carolina (Wang)
| | - Linsheng Zhang
- The Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia (L. Zhang)
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Zhu L, Xie S, Yang C, Hua N, Wu Y, Wang L, Ni W, Tong X, Fei M, Wang S. Current Progress in Investigating Mature T- and NK-Cell Lymphoma Gene Aberrations by Next-Generation Sequencing (NGS). Cancer Manag Res 2021; 13:5275-5286. [PMID: 34239326 PMCID: PMC8259727 DOI: 10.2147/cmar.s299505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 06/14/2021] [Indexed: 11/23/2022] Open
Abstract
Despite efforts to abrogate the severe threat to life posed by the profound malignancy of mature natural killer/T-cell lymphoma (NKTCL), therapeutic advances still require further investigation of its inherent regulatory biochemical processes. Next-generation sequencing (NGS) is an increasingly developing gene detection technique, which has been widely used in lymphoma genetic research in recent years. Targeted therapy based on the above studies has also generated a series of advances, making genetic mutation a new research hotspot in lymphoma. Advances in NKTCL-related gene mutations are reviewed in this paper.
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Affiliation(s)
- Lifen Zhu
- Molecular diagnosis laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
| | - Shufang Xie
- Molecular diagnosis laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, People’s Republic of China
| | - Chen Yang
- Molecular diagnosis laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
- Department of Clinical Medicine, Qingdao University, Qingdao, Shandong, People’s Republic of China
| | - Nanni Hua
- Molecular diagnosis laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, People’s Republic of China
| | - Yi Wu
- Phase I clinical research center, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
| | - Lei Wang
- Molecular diagnosis laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
| | - Wanmao Ni
- Molecular diagnosis laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
| | - Xiangmin Tong
- Molecular diagnosis laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
| | - Min Fei
- Center of Health Management, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
| | - Shibing Wang
- Molecular diagnosis laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, People’s Republic of China
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Freiche V, Cordonnier N, Paulin MV, Huet H, Turba ME, Macintyre E, Malamut G, Cerf-Bensussan N, Molina TJ, Hermine O, Bruneau J, Couronné L. Feline low-grade intestinal T cell lymphoma: a unique natural model of human indolent T cell lymphoproliferative disorder of the gastrointestinal tract. J Transl Med 2021; 101:794-804. [PMID: 33692440 DOI: 10.1038/s41374-021-00581-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 02/06/2021] [Accepted: 02/07/2021] [Indexed: 12/20/2022] Open
Abstract
Indolent T cell lymphoproliferative disorder (LPD) of the gastrointestinal tract (GI-TLPD) is a rare human primary gastrointestinal T cell lymphoma that was recently included in the 2016 revision of the World Health Organization classification of lymphoid neoplasms. Low-grade intestinal T cell lymphoma (LGITL), an emerging disease in the domestic cat, shares a number of features with human GI-TLPD. In this prospective study, we determined whether feline LGITL might serve as a model of human GI-TLPD. We analyzed clinical, laboratory, and radiological data and performed histopathological and molecular studies on small intestinal biopsies from 22 domestic cats diagnosed with LGITL. This cancer mostly affects aging cats, is associated with nonspecific gastrointestinal tract signs, and is usually characterized by an indolent course. A histopathological analysis indicated that LGITL was mainly located in the jejunum. The small intestinal lamina propria was infiltrated by large numbers of small CD3+ T cell lymphocytes with various CD4 and CD8 expression profiles (CD4+ CD8- (4 out of 11, 36%), CD4- CD8+ (3 out of 11, 27%), and CD4- CD8- (4 out of 11, 36%)). Intraepithelial lymphocyte (IEL) counts were elevated in all cases. Ki67 was expressed in lamina propria lymphocytes and IELs at a low level (<30%). Most LGITLs were labelled by antibodies against phosphorylated STAT5, but were negative for CD56 and phosphorylated STAT3. T cell receptor gamma chain gene monoclonality was found in 86% of cases. These findings confirmed that feline LGITL shares clinical and histopathological features with human GI-TLPD. Feline LGITL may therefore constitute a relevant model of the human disease.
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Affiliation(s)
- Valérie Freiche
- Internal Medicine Department, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
- Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutical Implications, INSERM U1163, Imagine Institute, Paris, France
| | - Nathalie Cordonnier
- Pathology Department, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Mathieu Victor Paulin
- Internal Medicine Department, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Hélène Huet
- Pathology Department, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | | | - Elizabeth Macintyre
- Laboratory of Onco-Hematology, Hôpital Necker - Enfants Malades, Assistance Publique - Hôpitaux de Paris (AP-HP), University of Paris, Paris, France
- INSERM U1151, Necker-Enfants Malades Institute, Paris, France
| | - Georgia Malamut
- Gastroenterology Department, Hôpital Cochin, Assistance Publique - Hôpitaux de Paris (APHP), University of Paris, Paris, France
- Laboratory of Intestinal Immunity, INSERM U1163, Imagine Institute, Paris, France
| | | | - Thierry Jo Molina
- Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutical Implications, INSERM U1163, Imagine Institute, Paris, France
- Pathology Department, Hôpital Necker - Enfants Malades, Assistance Publique - Hôpitaux de Paris (APHP), University of Paris, Paris, France
| | - Olivier Hermine
- Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutical Implications, INSERM U1163, Imagine Institute, Paris, France
- Hematology Department, Hôpital Necker - Enfants Malades, Assistance Publique - Hôpitaux de Paris (APHP), University of Paris, Paris, France
| | - Julie Bruneau
- Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutical Implications, INSERM U1163, Imagine Institute, Paris, France
- Pathology Department, Hôpital Necker - Enfants Malades, Assistance Publique - Hôpitaux de Paris (APHP), University of Paris, Paris, France
| | - Lucile Couronné
- Laboratory of Cellular and Molecular Mechanisms of Hematological Disorders and Therapeutical Implications, INSERM U1163, Imagine Institute, Paris, France.
- Laboratory of Onco-Hematology, Hôpital Necker - Enfants Malades, Assistance Publique - Hôpitaux de Paris (AP-HP), University of Paris, Paris, France.
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Untwining Anti-Tumor and Immunosuppressive Effects of JAK Inhibitors-A Strategy for Hematological Malignancies? Cancers (Basel) 2021; 13:cancers13112611. [PMID: 34073410 PMCID: PMC8197909 DOI: 10.3390/cancers13112611] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/18/2021] [Accepted: 05/22/2021] [Indexed: 01/02/2023] Open
Abstract
Simple Summary The Janus kinase-signal transducer and activator of transcription (JAK-STAT) pathway is aberrantly activated in many malignancies. Inhibition of this pathway via JAK inhibitors (JAKinibs) is therefore an attractive therapeutic strategy underlined by Ruxolitinib (JAK1/2 inhibitor) being approved for the treatment of myeloproliferative neoplasms. As a consequence of the crucial role of the JAK-STAT pathway in the regulation of immune responses, inhibition of JAKs suppresses the immune system. This review article provides a thorough overview of the current knowledge on JAKinibs’ effects on immune cells in the context of hematological malignancies. We also discuss the potential use of JAKinibs for the treatment of diseases in which lymphocytes are the source of the malignancy. Abstract The Janus kinase-signal transducer and activator of transcription (JAK-STAT) pathway propagates signals from a variety of cytokines, contributing to cellular responses in health and disease. Gain of function mutations in JAKs or STATs are associated with malignancies, with JAK2V617F being the main driver mutation in myeloproliferative neoplasms (MPN). Therefore, inhibition of this pathway is an attractive therapeutic strategy for different types of cancer. Numerous JAK inhibitors (JAKinibs) have entered clinical trials, including the JAK1/2 inhibitor Ruxolitinib approved for the treatment of MPN. Importantly, loss of function mutations in JAK-STAT members are a cause of immune suppression or deficiencies. MPN patients undergoing Ruxolitinib treatment are more susceptible to infections and secondary malignancies. This highlights the suppressive effects of JAKinibs on immune responses, which renders them successful in the treatment of autoimmune diseases but potentially detrimental for cancer patients. Here, we review the current knowledge on the effects of JAKinibs on immune cells in the context of hematological malignancies. Furthermore, we discuss the potential use of JAKinibs for the treatment of diseases in which lymphocytes are the source of malignancies. In summary, this review underlines the necessity of a robust immune profiling to provide the best benefit for JAKinib-treated patients.
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Whole-genome sequencing reveals potent therapeutic strategy for monomorphic epitheliotropic intestinal T-cell lymphoma. Blood Adv 2021; 4:4769-4774. [PMID: 33017466 DOI: 10.1182/bloodadvances.2020001782] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 09/01/2020] [Indexed: 12/26/2022] Open
Abstract
Key Points
Whole genomic and transcriptomic analyses of MEITL revealed multiple potential therapeutic targets. Synergistic effects of pimozide and romidepsin are shown in a well-characterized MEITL PDX model.
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Glogowska A, Thanasupawat T, Beiko J, Pitz M, Hombach-Klonisch S, Klonisch T. Novel CTRP8-RXFP1-JAK3-STAT3 axis promotes Cdc42-dependent actin remodeling for enhanced filopodia formation and motility in human glioblastoma cells. Mol Oncol 2021; 16:368-387. [PMID: 33960104 PMCID: PMC8763656 DOI: 10.1002/1878-0261.12981] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 03/23/2021] [Accepted: 05/04/2021] [Indexed: 12/14/2022] Open
Abstract
C1q tumor necrosis factor‐related peptide 8 (CTRP8) is the least studied member of the C1Q‐TNF‐related peptide family. We identified CTRP8 as a ligand of the G protein‐coupled receptor relaxin family peptide receptor 1 (RXFP1) in glioblastoma multiforme (GBM). The CTRP8‐RXFP1 ligand–receptor system protects human GBM cells against the DNA‐alkylating damage‐inducing temozolomide (TMZ), the drug of choice for the treatment of patients with GBM. The DNA protective role of CTRP8 was dependent on a functional RXFP1‐STAT3 signaling cascade and targeted the monofunctional glycosylase N‐methylpurine DNA glycosylase (MPG) for more efficient base excision repair of TMZ‐induced DNA‐damaged sites. CTRP8 also improved the survival of GBM cells by upregulating anti‐apoptotic BCl‐2 and BCL‐XL. Here, we have identified Janus‐activated kinase 3 (JAK3) as a novel member of a novel CTRP8‐RXFP1‐JAK3‐STAT3 signaling cascade that caused an increase in cellular protein content and activity of the small Rho GTPase Cdc42. This is associated with significant F‐actin remodeling and increased GBM motility. Cdc42 was critically important for the upregulation of the actin nucleation complex N‐Wiskott–Aldrich syndrome protein/Arp3/4 and actin elongation factor profilin‐1. The activation of the RXFP1‐JAK3‐STAT3‐Cdc42 axis by both RXFP1 agonists, CTRP8 and relaxin‐2, caused extensive filopodia formation. This coincided with enhanced activity of ezrin, a key factor in tethering F‐actin to the plasma membrane, and inhibition of the actin filament severing activity of cofilin. The F‐actin remodeling and pro‐migratory activities promoted by the novel RXFP1‐JAK3‐STAT3‐Cdc42 axis were blocked by JAK3 inhibitor tofacitinib and STAT3 inhibitor STAT3 inhibitor VI. This provides a new rationale for the design of JAK3 and STAT3 inhibitors with better brain permeability for clinical treatment of the pervasive brain invasiveness of GBM.
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Affiliation(s)
- Aleksandra Glogowska
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Thatchawan Thanasupawat
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Jason Beiko
- Department of Surgery, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Marshall Pitz
- Research Institute in Oncology and Hematology (RIOH), CancerCare Manitoba, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Sabine Hombach-Klonisch
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada.,Research Institute in Oncology and Hematology (RIOH), CancerCare Manitoba, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada
| | - Thomas Klonisch
- Department of Human Anatomy and Cell Science, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada.,Department of Surgery, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada.,Research Institute in Oncology and Hematology (RIOH), CancerCare Manitoba, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada.,Department of Medical Microbiology & Infectious Diseases, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada.,Department of Pathology, Rady Faculty of Health Sciences, College of Medicine, University of Manitoba, Winnipeg, Canada
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Cortés JR, Palomero T. Biology and Molecular Pathogenesis of Mature T-Cell Lymphomas. Cold Spring Harb Perspect Med 2021; 11:cshperspect.a035402. [PMID: 32513675 DOI: 10.1101/cshperspect.a035402] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Peripheral T-cell lymphomas (PTCLs) constitute a highly heterogeneous group of hematological diseases with complex clinical and molecular features consistent with the diversity of the T-cell type from which they originate. In the past several years, the systematic implementation of high-throughput genomic technologies for the analysis of T-cell malignancies has supported an exponential progress in our understanding of the genetic drivers of oncogenesis and unraveled the molecular complexity of these diseases. Recent findings have helped redefine the classification of T-cell malignancies and provided novel biomarkers to improve diagnosis accuracy and analyze the response to therapy. In addition, multiple novel targeted therapies including small-molecule inhibitors, antibody-based approaches, and immunotherapy have shown promising results in early clinical analysis and have the potential to completely change the way T-cell malignancies have been treated traditionally.
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Affiliation(s)
| | - Teresa Palomero
- Institute for Cancer Genetics.,Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York 10032, USA
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Alvarez-Lesmes J, Chapman JR, Cassidy D, Zhou Y, Garcia-Buitrago M, Montgomery EA, Lossos IS, Sussman D, Poveda J. Gastrointestinal Tract Lymphomas: A Review of the Most Commonly Encountered Lymphomas. Arch Pathol Lab Med 2021; 145:1585-1596. [PMID: 33836528 DOI: 10.5858/arpa.2020-0661-ra] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2021] [Indexed: 11/06/2022]
Abstract
CONTEXT.— The gastrointestinal (GI) tract is the most common site of extranodal non-Hodgkin lymphoma, accounting for 20% to 40% of all extranodal lymphomas. The majority of these are systemic processes secondarily involving the GI tract. Primary GI lymphomas are less common, accounting for approximately 10% to 15% of all non-Hodgkin lymphoma. Most non-Hodgkin lymphoma involving the GI tract are of B-cell lineage, of which diffuse large B-cell lymphoma is the most common subtype, irrespective of location. OBJECTIVE.— To review the lymphoproliferative neoplasms of B-cell and T-cell lineage involving the luminal GI tract according to the most prevalent subtypes at each anatomic site. DATA SOURCE.— Systematic search of the PubMed database for updated literature on GI lymphomas epidemiology, subtypes, clinical, endoscopic, and genetic findings. Histologic images are derived from our collection of clinical cases. CONCLUSIONS.— The GI tract is the most common site of extranodal lymphoproliferative neoplasms. Recognition of the most frequently encountered GI lymphomas is imperative for patient management and treatment.
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Affiliation(s)
- Jessica Alvarez-Lesmes
- From the Department of Pathology, Division of Hematopathology, Division of Gastrointestinal Pathology, University of Miami Miller School of Medicine, Sylvester Comprehensive Cancer Center and Jackson Memorial Hospital, Miami, Florida (Alvarez-Lesmes, Chapman, Cassidy, Zhou, Garcia-Buitrago, Montgomery, Poveda)
| | - Jennifer R Chapman
- From the Department of Pathology, Division of Hematopathology, Division of Gastrointestinal Pathology, University of Miami Miller School of Medicine, Sylvester Comprehensive Cancer Center and Jackson Memorial Hospital, Miami, Florida (Alvarez-Lesmes, Chapman, Cassidy, Zhou, Garcia-Buitrago, Montgomery, Poveda)
| | - Daniel Cassidy
- From the Department of Pathology, Division of Hematopathology, Division of Gastrointestinal Pathology, University of Miami Miller School of Medicine, Sylvester Comprehensive Cancer Center and Jackson Memorial Hospital, Miami, Florida (Alvarez-Lesmes, Chapman, Cassidy, Zhou, Garcia-Buitrago, Montgomery, Poveda)
| | - Yi Zhou
- From the Department of Pathology, Division of Hematopathology, Division of Gastrointestinal Pathology, University of Miami Miller School of Medicine, Sylvester Comprehensive Cancer Center and Jackson Memorial Hospital, Miami, Florida (Alvarez-Lesmes, Chapman, Cassidy, Zhou, Garcia-Buitrago, Montgomery, Poveda)
| | - Monica Garcia-Buitrago
- From the Department of Pathology, Division of Hematopathology, Division of Gastrointestinal Pathology, University of Miami Miller School of Medicine, Sylvester Comprehensive Cancer Center and Jackson Memorial Hospital, Miami, Florida (Alvarez-Lesmes, Chapman, Cassidy, Zhou, Garcia-Buitrago, Montgomery, Poveda)
| | - Elizabeth A Montgomery
- From the Department of Pathology, Division of Hematopathology, Division of Gastrointestinal Pathology, University of Miami Miller School of Medicine, Sylvester Comprehensive Cancer Center and Jackson Memorial Hospital, Miami, Florida (Alvarez-Lesmes, Chapman, Cassidy, Zhou, Garcia-Buitrago, Montgomery, Poveda)
| | - Izidore S Lossos
- Division of Hematology, Department of Medicine, University of Miami Miller School of Medicine, Sylvester Comprehensive Cancer Center, Miami, Florida (Lossos).,Department of Molecular and Cellular Pharmacology (Lossos), University of Miami Miller School of Medicine, Miami, Florida
| | - Daniel Sussman
- Division of Digestive Health and Liver Diseases (Sussman), University of Miami Miller School of Medicine, Miami, Florida
| | - Julio Poveda
- From the Department of Pathology, Division of Hematopathology, Division of Gastrointestinal Pathology, University of Miami Miller School of Medicine, Sylvester Comprehensive Cancer Center and Jackson Memorial Hospital, Miami, Florida (Alvarez-Lesmes, Chapman, Cassidy, Zhou, Garcia-Buitrago, Montgomery, Poveda)
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45
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Zhang Y, Zhou B, Sun J, He Q, Zhao Y. Knockdown of GPSM1 Inhibits the Proliferation and Promotes the Apoptosis of B-Cell Acute Lymphoblastic Leukemia Cells by Suppressing the ADCY6-RAPGEF3-JNK Signaling Pathway. Pathol Oncol Res 2021; 27:643376. [PMID: 34257610 PMCID: PMC8262160 DOI: 10.3389/pore.2021.643376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/01/2021] [Indexed: 12/24/2022]
Abstract
B-cell acute lymphoblastic leukemia (B-ALL) is the common type of blood cancer. Although the remission rate has increased, the current treatment options for B-ALL are usually related to adverse reactions and recurrence, so it is necessary to find other treatment options. G protein signaling modulator 1 (GPSM1) is one of several factors that affect the basic activity of the G protein signaling system, but its role in B-ALL has not yet been clarified. In this study, we analyzed the expression of GPSM1 in the Oncomine database and found that the GPSM1 levels were higher in B-ALL cells than in peripheral blood mononuclear cells (PBMCs). Analyses of the Gene Expression Profiling Interactive Analysis (GEPIA) demonstrated that patients with high GPSM1 levels had shorter survival times than those with low levels. Additionally, gene set enrichment analysis (GSEA) suggested that GPSM1 was positively correlated with proliferation, G protein-coupled receptor (GPCR) ligand binding, Gαs signaling and calcium signaling pathways. In further experiments, GPSM1 was found to be highly expressed in Acute lymphoblastic leukemia (ALL) cell lines, and downregulation of GPSM1 inhibited proliferation and promoted cell cycle arrest and apoptosis in BALL-1 and Reh cells. Moreover, knockdown of GPSM1 suppressed ADCY6 and RAPGEF3 expression in BALL-1 and Reh cells. Furthermore, we reported that GPSM1 regulated JNK expression via ADCY6-RAPGEF3. The present study demonstrates that GPSM1 promotes tumor growth in BALL-1 and Reh cells by modulating ADCY6-RAPGEF3-JNK signaling.
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Affiliation(s)
- Ye Zhang
- Key Laboratory of Cell Biology of Ministry of Public Health, and Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang, China.,Department of Bioinformatics, School of Life Sciences, China Medical University, Shenyang, China
| | - Bo Zhou
- Key Laboratory of Cell Biology of Ministry of Public Health, and Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang, China.,Department of Bioinformatics, School of Life Sciences, China Medical University, Shenyang, China
| | - Jingjing Sun
- Key Laboratory of Cell Biology of Ministry of Public Health, and Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang, China.,Department of Bioinformatics, School of Life Sciences, China Medical University, Shenyang, China
| | - Qun He
- Department of Bioinformatics, School of Life Sciences, China Medical University, Shenyang, China
| | - Yujie Zhao
- Key Laboratory of Cell Biology of Ministry of Public Health, and Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang, China
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46
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Epstein-Peterson ZD, Horwitz SM. Molecularly targeted therapies for relapsed and refractory peripheral T-cell lymphomas. Semin Hematol 2021; 58:78-84. [PMID: 33906725 PMCID: PMC8496899 DOI: 10.1053/j.seminhematol.2021.02.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/16/2021] [Accepted: 02/22/2021] [Indexed: 01/19/2023]
Abstract
The advent of molecularly targeted agents for patients with peripheral T-cell lymphomas (PTCL) has begun to change the therapeutic landscape in these diseases, especially for patients with relapsed or refractory disease. These agents, grounded in targeting numerous pathways or alterations related to disease pathogenesis, have shown promise across many PTCL subhistologies. Aided by significant advances in experimental techniques related to molecular biology, epigenetics, and immunology, more recent studies have begun elucidating mediators of resistance, both intrinsic and acquired, to inform future therapeutic advances. Defining and targeting these escape mechanisms through rational combination approaches will likely be important to continue to build on these promising advances and further improve clinical outcomes for patients facing PTCL.
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Affiliation(s)
- Zachary D Epstein-Peterson
- Lymphoma Service, Division of Hematologic Malignancies, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Steven M Horwitz
- Lymphoma Service, Division of Hematologic Malignancies, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY.
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47
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Susan SSH, Ng SB, Wang S, Tan SY. Diagnostic approach to T- and NK-cell lymphoproliferative disorders in the gastrointestinal tract. Semin Diagn Pathol 2021; 38:21-30. [PMID: 34016481 DOI: 10.1053/j.semdp.2021.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 03/11/2021] [Accepted: 03/22/2021] [Indexed: 12/13/2022]
Abstract
Most gastrointestinal NK and T cell lymphomas are aggressive in behavior, although in recent years a subset of indolent lymphoproliferative disorders have been described, which must be distinguished from their more malignant mimics. Intestinal T-cell lymphomas may arise from intra-epithelial lymphocytes and display epitheliotropism, such as enteropathy-associated T-cell lymphoma and monomorphic epitheliotropic intestinal T-cell lymphoma. They are both aggressive in behavior but differ in their clinic-pathological features. On the other hand, intra-epithelial lymphocytes are not prominent in intestinal T-cell lymphoma, NOS, which is a diagnosis of exclusion and probably represents a heterogeneous group of entities. Indolent lymphoproliferative disorders of NK- and T-cells of both CD8 and CD4 subsets share a chronic, recurring clinical course but display differences from each other. CD8+ T-cell lymphoproliferative disorder of GI tract has a low proliferative fraction and does not progress nor undergo large cell transformation. Whilst NK-cell enteropathy runs an indolent clinical course, it may display a high proliferation fraction. On the other hand, CD4+ indolent T-cell lymphoproliferative disorder displays variable proliferation rates and may progress or transform after a number of years. In Asia and South America, it is not uncommon to see involvement of the gastrointestinal tract by EBV-associated extranodal NK/T cell lymphoma, nasal type, which must be distinguished from NK cell enteropathy and EBV-associated mucocutaneous ulcers.
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Affiliation(s)
- Swee-Shan Hue Susan
- Department of Pathology, National University Hospital Health Service, Singapore, Singapore; Department of Pathology, National University of Singapore Yong Loo Lin School of Medicine, Singapore, Singapore
| | - Siok-Bian Ng
- Department of Pathology, National University of Singapore Yong Loo Lin School of Medicine, Singapore, Singapore
| | - Shi Wang
- Department of Pathology, National University Hospital Health Service, Singapore, Singapore
| | - Soo-Yong Tan
- Department of Pathology, National University of Singapore Yong Loo Lin School of Medicine, Singapore, Singapore.
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Mucosal Epithelial Jak Kinases in Health and Diseases. Mediators Inflamm 2021; 2021:6618924. [PMID: 33814980 PMCID: PMC7990561 DOI: 10.1155/2021/6618924] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 01/02/2021] [Accepted: 03/06/2021] [Indexed: 12/22/2022] Open
Abstract
Janus kinases (Jaks) are a family of nonreceptor tyrosine kinase that include four different members, viz., Jak1, Jak2, Jak3, and Tyk2. Jaks play critical roles in immune cells functions; however, recent studies suggest they also play essential roles in nonimmune cell physiology. This review highlights the significance of epithelial Jaks in understanding the molecular basis of some of the diseases through regulation of epithelial-mesenchymal transition, cell survival, cell growth, development, and differentiation. Growth factors and cytokines produced by the cells of hematopoietic origin use Jak kinases for signal transduction in both immune and nonimmune cells. Among Jaks, Jak3 is widely expressed in both immune cells and in intestinal epithelial cells (IECs) of both humans and mice. Mutations that abrogate Jak3 functions cause an autosomal severe combined immunodeficiency disease (SCID) while activating Jak3 mutations lead to the development of hematologic and epithelial cancers. A selective Jak3 inhibitor CP-690550 (Xeljanz) approved by the FDA for certain chronic inflammatory conditions demonstrates immunosuppressive activity in rheumatoid arthritis, psoriasis, and organ transplant rejection. Here, we also focus on the consequences of Jak3-directed drugs on adverse effects in light of recent discoveries in mucosal epithelial functions of Jak3 with some information on other Jaks. Lastly, we brief on structural implications of Jak3 domains beyond the immune cells. As information about the roles of Jak3 in gastrointestinal functions and associated diseases are only just emerging, in the review, we summarize its implications in gastrointestinal wound repair, inflammatory bowel disease, obesity-associated metabolic syndrome, and epithelial cancers. Lastly, we shed lights on identifying potential novel targets in developing therapeutic interventions of diseases associated with dysfunctional IEC.
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New developments in non-Hodgkin lymphoid malignancies. Pathology 2021; 53:349-366. [PMID: 33685720 DOI: 10.1016/j.pathol.2021.01.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 01/08/2021] [Accepted: 01/11/2021] [Indexed: 12/23/2022]
Abstract
The revised fourth edition of the World Health Organization (WHO) Classification of Tumours of Haematopoietic and Lymphoid Tissues (2017) reflects significant advances in understanding the biology, genetic basis and behaviour of haematopoietic neoplasms. This review focuses on some of the major changes in B-cell and T-cell non-Hodgkin lymphomas in the 2017 WHO and includes more recent updates. The 2017 WHO saw a shift towards conservatism in the classification of precursor lesions of small B-cell lymphomas such as monoclonal B-cell lymphocytosis, in situ follicular and in situ mantle cell neoplasms. With more widespread use of next generation sequencing (NGS), special entities within follicular lymphoma and mantle cell lymphoma were recognised with recurrent genetic aberrations and unique clinicopathological features. The diagnostic workup of lymphoplasmacytic lymphoma and hairy cell leukaemia has been refined with the discovery of MYD88 L265P and BRAF V600E mutations, respectively, in these entities. Recommendations in the immunohistochemical evaluation of diffuse large B-cell lymphoma include determining cell of origin and expression of MYC and BCL2, so called 'double-expressor' phenotype. EBV-positive large B-cell lymphoma of the elderly has been renamed to recognise its occurrence amongst a wider age group. EBV-positive mucocutaneous ulcer is a newly recognised entity with indolent clinical behaviour that occurs in the setting of immunosuppression. Two lymphomas with recurrent genetic aberrations are newly included provisional entities: Burkitt-like lymphoma with 11q aberration and large B-cell lymphoma with IRF4 rearrangement. Aggressive B-cell lymphomas with MYC, BCL2 and/or BCL6 rearrangements, so called 'double-hit/triple-hit' lymphomas are now a distinct entity. Much progress has been made in understanding intestinal T-cell lymphomas. Enteropathy-associated T-cell lymphoma, type II, is now known to not be associated with coeliac disease and is hence renamed monomorphic epitheliotropic T-cell lymphoma. An indolent clonal T-cell lymphoproliferative disorder of the GI tract is a newly included provisional entity. Angioimmunoblastic T-cell lymphoma and nodal T-cell lymphomas with T-follicular helper phenotype are included in a single broad category, emphasising their shared genetic and phenotypic features. Anaplastic large cell lymphoma, ALK- is upgraded to a definitive entity with subsets carrying recurrent rearrangements in DUSP22 or TP63. Breast implant-associated anaplastic large cell lymphoma is a new provisional entity with indolent behaviour. Finally, cutaneous T-cell proliferations include a new provisional entity, primary cutaneous acral CD8-positive T-cell lymphoma, and reclassification of primary small/medium CD4-positive T-cell lymphoma as lymphoproliferative disorder.
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50
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Immunophenotypic Spectrum and Genomic Landscape of Refractory Celiac Disease Type II. Am J Surg Pathol 2021; 45:905-916. [PMID: 33544565 DOI: 10.1097/pas.0000000000001658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Refractory celiac disease type II (RCD II), also referred to as "cryptic" enteropathy-associated T-cell lymphoma (EATL) or "intraepithelial T-cell lymphoma," is a rare clonal lymphoproliferative disorder that arises from innate intraepithelial lymphocytes. RCD II has a poor prognosis and frequently evolves to EATL. The pathogenesis of RCD II is not well understood and data regarding the immunophenotypic spectrum of this disease and underlying genetic alterations are limited. To gain further biological insights, we performed comprehensive immunophenotypic, targeted next-generation sequencing, and chromosome microarray analyses of 11 RCD II cases: CD4-/CD8- (n=6), CD8+ (n=4), and CD4+ (n=1), and 2 of 3 ensuing EATLs. Genetic alterations were identified in 9/11 (82%) of the RCD II cases. All 9 displayed mutations in members of the JAK-STAT signaling pathway, including frequent, recurrent STAT3 (7/9, 78%) and JAK1 (4/9, 44%) mutations, and 9/10 evaluable cases expressed phospho-STAT3. The mutated cases also harbored recurrent alterations in epigenetic regulators (TET2, n=5 and KMT2D, n=5), nuclear factor-κB (TNFAIP3, n=4), DNA damage repair (POT1, n=3), and immune evasion (CD58, n=2) pathway genes. The CD4-/CD8- and other immunophenotypic subtypes of RCD II exhibited similar molecular features. Longitudinal genetic analyses of 4 RCD II cases revealed stable mutation profiles, however, additional mutations were detected in the EATLs, which occurred at extraintestinal sites and were clonally related to antecedent RCD II. Chromosome microarray analysis demonstrated copy number changes in 3/6 RCD II cases, and 1 transformed EATL with sufficient neoplastic burden for informative analysis. Our findings provide novel information about the immunophenotypic and genomic characteristics of RCD II, elucidate early genetic events in EATL pathogenesis, and reveal potential therapeutic targets.
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