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García-Solorio J, Martínez-Villegas O, Rodríguez-Corona U, Molina-Garay C, Jiménez-Olivares M, Carrillo-Sanchez K, Mendoza-Caamal EC, Muñoz-Rivas A, Villegas-Torres BE, Cervera A, Flores-Lagunes LL, Alaez-Verson C. Case report: A familial B-acute lymphoblastic leukemia associated with a new germline pathogenic variant in PAX5. The first report in Mexico. Front Oncol 2024; 14:1355335. [PMID: 38571503 PMCID: PMC10987763 DOI: 10.3389/fonc.2024.1355335] [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: 12/13/2023] [Accepted: 03/06/2024] [Indexed: 04/05/2024] Open
Abstract
B-cell acute lymphoblastic leukemia (B-ALL) is one of the most common childhood cancers worldwide. Although most cases are sporadic, some familial forms, inherited as autosomal dominant traits with incomplete penetrance, have been described over the last few years. Germline pathogenic variants in transcription factors such as PAX5, IKZF1, and ETV6 have been identified as causal in familial forms. The proband was a 7-year-old Mexican girl diagnosed with high-risk B-ALL at five years and 11 months of age. Family history showed that the proband's mother had high-risk B-ALL at 16 months of age. She received chemotherapy and was discharged at nine years of age without any evidence of recurrence of leukemia. The proband's father was outside the family nucleus, but no history of leukemia or cancer was present up to the last contact with the mother. We performed exome sequencing on the proband and the proband's mother and identified the PAX5 variant NM_016734.3:c.963del: p.(Ala322LeufsTer11), located in the transactivation domain of the PAX5 protein. The variant was classified as probably pathogenic according to the ACMG criteria. To the best of our knowledge, this is the first Mexican family with an inherited increased risk of childhood B-ALL caused by a novel germline pathogenic variant of PAX5. Identifying individuals with a hereditary predisposition to cancer is essential for modern oncological practice. Individuals at high risk of leukemia would benefit from hematopoietic stem cell transplantation, but family members carrying the pathogenic variant should be excluded as hematopoietic stem cell donors.
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Affiliation(s)
- Joaquín García-Solorio
- Laboratorio de Diagnóstico Genómico, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
| | - Octavio Martínez-Villegas
- Departamento de hemato-oncología pediátrica, Unidad Médicade Alta Especialidad Hospital de Ginecología Pediatría No 48, Centro Médico del Bajío, León, Guanajuato, Mexico
| | - Ulises Rodríguez-Corona
- Ribonucleo Protein Biochemistry Research Unit, Montreal Clinical Research Institute, Montreal, QC, Canada
| | - Carolina Molina-Garay
- Laboratorio de Diagnóstico Genómico, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
| | - Marco Jiménez-Olivares
- Laboratorio de Diagnóstico Genómico, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
| | - Karol Carrillo-Sanchez
- Laboratorio de Diagnóstico Genómico, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
| | - Elvia C. Mendoza-Caamal
- Laboratorio de Diagnóstico Genómico, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
| | - Anallely Muñoz-Rivas
- Laboratorio de Diagnóstico Genómico, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
| | - Beatriz E. Villegas-Torres
- Laboratorio de Diagnóstico Genómico, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
| | - Alejandra Cervera
- Subdirección de Genómica Poblacional, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
| | - Luis L. Flores-Lagunes
- Laboratorio de Diagnóstico Genómico, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
| | - Carmen Alaez-Verson
- Laboratorio de Diagnóstico Genómico, Instituto Nacional de Medicina Genómica (INMEGEN), Mexico City, Mexico
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Xu X, Chen J, Zhao H, Pi Y, Lin G, Hu L. Single-Cell RNA-seq Analysis of a Human Embryonic Stem Cell to Endothelial Cell System Based on Transcription Factor Overexpression. Stem Cell Rev Rep 2023; 19:2497-2509. [PMID: 37537495 DOI: 10.1007/s12015-023-10598-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/17/2023] [Indexed: 08/05/2023]
Abstract
BACKGROUND Human embryonic stem cell (hESC)-derived endothelial cells (ECs) possess therapeutic potential in many diseases. Cytokine supplementation induction and transcription factor overexpression have become two mainstream methods of hESC-EC induction. Single-cell RNA-seq technology has been widely used to analyse dynamic processes during hESC-EC induction and components of induced endothelial cells. However, studies that used single-cell RNA-seq are mainly based on cytokine supplementation methods. In this study, we used a high-efficiency human embryonic stem cell-endothelial cell line (hESC-EC) called the "FLI1-PKC system" as a research model and employed single-cell RNA sequencing (scRNA-seq) to investigate the transcriptional landscape and cellular dynamics. METHODS The high-efficiency hESC-EC induction (FLI1-PKC) system was established in our previous study. We applied single-cell RNA sequencing (scRNA-seq) of the differentiated cells at different time points and investigated the gene expression profiles. RESULTS The FLI1-PKC induction system can directionally differentiate hESCs into mature endothelial cells with all the requisite functions. Unlike other hES-EC induction protocols, the FLI1-PKC method follows a different induction route; nonetheless, the transcriptome of induced endothelial cells (iECs) remains the same. The elevated number of activated transcription factors may explain why the FLI1-PKC system is more effective than other hES-EC protocols. CONCLUSION Our study has presented a single-cell transcriptional overview of a high-efficiency hESC-EC induction system, which can be used as a model and reference for further improvement in other hESC induction systems.
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Affiliation(s)
- XiangWang Xu
- Institute of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, School of Basic Medical Science, Central South University, Xiangya Road 88#, Changsha, 410008, Hunan, People's Republic of China
| | - JunRu Chen
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Hunan, 410008, Changsha, China
| | - Hao Zhao
- Xiangya Hospital of Central South University, Changsha, Human, China
| | - YuZe Pi
- Institute of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, School of Basic Medical Science, Central South University, Xiangya Road 88#, Changsha, 410008, Hunan, People's Republic of China
| | - Ge Lin
- Institute of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, School of Basic Medical Science, Central South University, Xiangya Road 88#, Changsha, 410008, Hunan, People's Republic of China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Hunan, 410008, Changsha, China
- Hunan International Scientific and Technological Cooperation Base of Development and Carcinogenesis, National Engineering and Research Center of Human Stem Cell, Changsha, 410008, Hunan, China
| | - Liang Hu
- Institute of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, School of Basic Medical Science, Central South University, Xiangya Road 88#, Changsha, 410008, Hunan, People's Republic of China.
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Hunan, 410008, Changsha, China.
- Hunan International Scientific and Technological Cooperation Base of Development and Carcinogenesis, National Engineering and Research Center of Human Stem Cell, Changsha, 410008, Hunan, China.
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Feng L, Lu WH, Li QY, Zhang HY, Xu LR, Zang WQ, Guo WT, Li YF, Zheng WJ, Geng YX, Li Q, Liu YH. Curcuma Longa Induces the Transcription Factor FOXP3 to Downregulate Human Chemokine CCR5 Expression and Inhibit HIV-1 Infection. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2023; 51:1189-1209. [PMID: 37314412 DOI: 10.1142/s0192415x23500544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
HIV mutations occur frequently despite the substantial success of combination antiretroviral therapy, which significantly impairs HIV progression. Failure to develop specific vaccines, the occurrence of drug-resistant strains, and the high incidence of adverse effects due to combination antiviral therapy regimens call for novel and safer antivirals. Natural products are an important source of new anti-infective agents. For instance, curcumin inhibits HIV and inflammation in cell culture assays. Curcumin, the principal constituent of the dried rhizomes of Curcuma longa L. (turmeric), is known as a strong anti-oxidant and anti-inflammatory agent with different pharmacological effects. This work aims to assess curcumin's inhibitory effects on HIV in vitro and to explore the underpinning mechanism, focusing on CCR5 and the transcription factor forkhead box protein P3 (FOXP3). First, curcumin and the RT inhibitor zidovudine (AZT) were evaluated for their inhibitory properties. HIV-1 pseudovirus infectivity was determined by green fluorescence and luciferase activity measurements in HEK293T cells. AZT was used as a positive control that inhibited HIV-1 pseudoviruses dose-dependently, with IC50 values in the nanomolar range. Then, a molecular docking analysis was carried out to assess the binding affinities of curcumin for CCR5 and HIV-1 RNase H/RT. The anti-HIV activity assay showed that curcumin inhibited HIV-1 infection, and the molecular docking analysis revealed equilibrium dissociation constants of [Formula: see text]9.8[Formula: see text]kcal/mol and [Formula: see text]9.3[Formula: see text]kcal/mol between curcumin and CCR5 and HIV-1 RNase H/RT, respectively. To examine curcumin's anti-HIV effect and its mechanism in vitro, cell cytotoxicity, transcriptome sequencing, and CCR5 and FOXP3 amounts were assessed at different concentrations of curcumin. In addition, human CCR5 promoter deletion constructs and the FOXP3 expression plasmid pRP-FOXP3 (with an EGFP tag) were generated. Whether FOXP3 DNA binding to the CCR5 promoter was blunted by curcumin was examined using transfection assays employing truncated CCR5 gene promoter constructs, a luciferase reporter assay, and a chromatin immunoprecipitation (ChIP) assay. Furthermore, micromolar concentrations of curcumin inactivated the nuclear transcription factor FOXP3, which resulted in decreased expression of CCR5 in Jurkat cells. Moreover, curcumin inhibited PI3K-AKT activation and its downstream target FOXP3. These findings provide mechanistic evidence encouraging further assessment of curcumin as a dietary agent used to reduce the virulence of CCR5-tropic HIV-1. Curcumin-mediated FOXP3 degradation was also reflected in its functions, namely, CCR5 promoter transactivation and HIV-1 virion production. Furthermore, curcumin inhibition of CCR5 and HIV-1 might constitute a potential therapeutic strategy for reducing HIV progression.
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Affiliation(s)
- Long Feng
- Department of Pathogenic Organism Biology, Henan University of Chinese Medicine, Zhengzhou, Henan Province 450046, P. R. China
| | - Wu-Hao Lu
- Department of Otolaryngology Head and Neck Surgery, The First Affliated Hospital, Zhengzhou University, Zhengzhou, Henan Province 450052, P. R. China
| | - Qing-Ya Li
- Department of Pathogenic Organism Biology, Henan University of Chinese Medicine, Zhengzhou, Henan Province 450046, P. R. China
| | - Hai-Yan Zhang
- Department of Pathogenic Organism Biology, Henan University of Chinese Medicine, Zhengzhou, Henan Province 450046, P. R. China
| | - Li-Ran Xu
- Department of Pathogenic Organism Biology, Henan University of Chinese Medicine, Zhengzhou, Henan Province 450046, P. R. China
| | - Wen-Qiao Zang
- Department of Immunology & Microbiology, Basic Medical College, Zhengzhou University, Zhengzhou, Henan Province 450001, P. R. China
| | - Wen-Tao Guo
- Department of Immunology & Microbiology, Guangdong Medical University, Dongguan, Guangdong Province 523808, P. R. China
| | - Yan-Fang Li
- Department of Pathogenic Organism Biology, Henan University of Chinese Medicine, Zhengzhou, Henan Province 450046, P. R. China
| | - Wen-Jin Zheng
- Department of Pathogenic Organism Biology, Henan University of Chinese Medicine, Zhengzhou, Henan Province 450046, P. R. China
| | - Yu-Xuan Geng
- Department of Pathogenic Organism Biology, Henan University of Chinese Medicine, Zhengzhou, Henan Province 450046, P. R. China
| | - Qing Li
- Department of Pathogenic Organism Biology, Henan University of Chinese Medicine, Zhengzhou, Henan Province 450046, P. R. China
| | - Yu-Han Liu
- Department of Pathogenic Organism Biology, Henan University of Chinese Medicine, Zhengzhou, Henan Province 450046, P. R. China
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Palma-Barqueros V, Bastida JM, López Andreo MJ, Zámora-Cánovas A, Zaninetti C, Ruiz-Pividal JF, Bohdan N, Padilla J, Teruel-Montoya R, Marín-Quilez A, Revilla N, Sánchez-Fuentes A, Rodriguez-Alen A, Benito R, Vicente V, Iturbe T, Greinacher A, Lozano ML, Rivera J. Platelet transcriptome analysis in patients with germline RUNX1 mutations. J Thromb Haemost 2023; 21:1352-1365. [PMID: 36736831 DOI: 10.1016/j.jtha.2023.01.023] [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: 08/22/2022] [Revised: 01/22/2023] [Accepted: 01/23/2023] [Indexed: 02/04/2023]
Abstract
BACKGROUND Germline mutations in RUNX1 can cause a familial platelet disorder that may lead to acute myeloid leukemia, an autosomal dominant disorder characterized by moderate thrombocytopenia, platelet dysfunction, and a high risk of developing acute myeloid leukemia or myelodysplastic syndrome. Discerning the pathogenicity of novel RUNX1 variants is critical for patient management. OBJECTIVES To extend the characterization of RUNX1 variants and evaluate their effects by transcriptome analysis. METHODS Three unrelated patients with long-standing thrombocytopenia carrying heterozygous RUNX1 variants were included: P1, who is a subject with recent development of myelodysplastic syndrome, with c.802 C>T[p.Gln268∗] de novo; P2 with c.586A>G[p.Thr196Ala], a variant that segregates with thrombocytopenia and myeloid neoplasia in the family; and P3 with c.476A>G[p.Asn159Ser], which did not segregate with thrombocytopenia or neoplasia. Baseline platelet evaluations were performed. Ultrapure platelets were prepared for platelet transcriptome analysis. RESULTS In P1 and P2, but not in P3, transcriptome analysis confirmed aberrant expression of genes recognized as RUNX1 targets. Data allowed grouping patients by distinct gene expression profiles, which were partitioned with clinical parameters. Functional studies and platelet mRNA expression identified alterations in the actin cytoskeleton, downregulation of GFI1B, defective GPVI downstream signaling, and reduction of alpha granule proteins, such as thrombospondin-1, as features likely implicated in thrombocytopenia and platelet dysfunction. CONCLUSION Platelet phenotype, familial segregation, and platelet transcriptomics support the pathogenicity of RUNX1 variants p.Gln268∗ and p.Thr196Ala, but not p.Asn159Ser. This study is an additional proof of concept that platelet RNA analysis could be a tool to help classify pathogenic RUNX1 variants and identify novel RUNX1 targets.
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Affiliation(s)
- Verónica Palma-Barqueros
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain
| | - José María Bastida
- Department of Hematology, Complejo Asistencial Universitario de Salamanca (CAUSA), Instituto de Investigación Biomédica de Salamanca (IBSAL), Universidad de Salamanca (USAL), Salamanca, Spain
| | | | - Ana Zámora-Cánovas
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain
| | - Carlo Zaninetti
- Institut für Transfusionsmedizin, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Juan Francisco Ruiz-Pividal
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain
| | - Natalia Bohdan
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain
| | - José Padilla
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain
| | - Raúl Teruel-Montoya
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain
| | - Ana Marín-Quilez
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain; Department of Hematology, Complejo Asistencial Universitario de Salamanca (CAUSA), Instituto de Investigación Biomédica de Salamanca (IBSAL), Universidad de Salamanca (USAL), Salamanca, Spain
| | - Nuria Revilla
- Department of Hematology, Hospital Universitario Fundación Jiménez Díaz, Instituto Investigación Sanitaria FJD (IIS-FJD), Madrid, Spain
| | - Ana Sánchez-Fuentes
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain
| | - Agustín Rodriguez-Alen
- Servicio de Hematología, Hospital Virgen de la Salud, Complejo Hospitalario de Toledo, Toledo, Spain
| | - Rocío Benito
- Department of Hematology, Complejo Asistencial Universitario de Salamanca (CAUSA), Instituto de Investigación Biomédica de Salamanca (IBSAL), Universidad de Salamanca (USAL), Salamanca, Spain
| | - Vicente Vicente
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain
| | - Teodoro Iturbe
- Servicio de Hematología, Hospital Universitario Santa Lucía, Cartagena, Murcia, Spain
| | - Andreas Greinacher
- Institut für Transfusionsmedizin, Universitätsmedizin Greifswald, Greifswald, Germany
| | - María Luisa Lozano
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain
| | - José Rivera
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Pascual Parrilla, CIBERER-U765, Murcia, Spain.
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Aimagambetov MZ, Orazgalieva MT, Omarov NB, Zhanybekov SD, Orazalina AS. Blood Disorders in Patients with Obstructive Jaundice: A Literature Review. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.10470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND: Mechanical jaundice is a pathological syndrome consisting in a violation of the outflow of hepatic bile through the bile ducts into the duodenum due to mechanical obstacles. The most common causes of mechanical jaundice are gallstone disease, malignant tumors, as well as cicatricial stricture of the bile duct or the large duodenal papilla of the duodenum. All this leads to the development of renal-hepatic insufficiency. Thrombohemorrhagic changes develop in the vascular bed, leading to the development of disseminated intravascular coagulation syndrome. Prevention and treatment of cholemic bleeding in case of mechanical jaundice remains one of the complex problems of hepatobiliary surgery. This article is an overview of the causes and pathophysiological changes affecting hemostasis in mechanical jaundice, as well as the main points of treatment of hemostasis disorders in patients with mechanical jaundice.
AIM: This study aims to study the literature on homeostasis in patients with mechanical jaundice.
SEARCH STRATEGY: To conduct a systematic search for scientific information and to achieve this goal, an analysis of scientific publications in evidence-based medicine databases (PubMed), using specialized search engines (Google Scholar) and in electronic scientific libraries (CyberLeninka, e-library) was carried out from 2005 to 2020.
INCLUSION CRITERIA: Research of high methodological quality: Meta-analysis, systematic review and cohort studies, as well as publications with clearly formulated and statistically proven conclusions in English, Russian, and Kazakh.
EXCLUSION CRITERIA: Summaries of reports, reports in the form of abstracts, and advertising articles.
RESULTS: The mechanisms that affect hemostasis in obstructive jaundice can be considered from four perspectives: The first relates to Vitamin K deficiency in obstructive jaundice, the second describes the effect of ongoing fibrosis and cirrhosis of the liver on hemostasis, the third analyzes the relationship between infectious-septic mechanisms and the hemostasis system, their clinical significance in patients with obstructive jaundice, and the latter involves the analysis of specific factors that manifest obstructive jaundice and may themselves affect the blood coagulation system.
CONCLUSION: Understanding the pathophysiology of hemostatic changes in patients with cholestasis and, more generally, liver disease is a clear way to accurate diagnosis and treatment. The combination of good knowledge with careful examination of each patient can lead to the most promising result.
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A Novel GATA1 Variant in the C-Terminal Zinc Finger Compared with the Platelet Phenotype of Patients with A Likely Pathogenic Variant in the N-Terminal Zinc Finger. Cells 2022; 11:cells11203223. [PMID: 36291092 PMCID: PMC9600848 DOI: 10.3390/cells11203223] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/22/2022] [Accepted: 10/10/2022] [Indexed: 01/19/2023] Open
Abstract
The GATA1 transcription factor is essential for normal erythropoiesis and megakaryocytic differentiation. Germline GATA1 pathogenic variants in the N-terminal zinc finger (N-ZF) are typically associated with X-linked thrombocytopenia, platelet dysfunction, and dyserythropoietic anemia. A few variants in the C-terminal ZF (C-ZF) domain are described with normal platelet count but altered platelet function as the main characteristic. Independently performed molecular genetic analysis identified a novel hemizygous variant (c.865C>T, p.H289Y) in the C-ZF region of GATA1 in a German patient and in a Spanish patient. We characterized the bleeding and platelet phenotype of these patients and compared these findings with the parameters of two German siblings carrying the likely pathogenic variant p.D218N in the GATA1 N-ZF domain. The main difference was profound thrombocytopenia in the brothers carrying the p.D218N variant compared to a normal platelet count in patients carrying the p.H289Y variant; only the Spanish patient occasionally developed mild thrombocytopenia. A functional platelet defect affecting αIIbβ3 integrin activation and α-granule secretion was present in all patients. Additionally, mild anemia, anisocytosis, and poikilocytosis were observed in the patients with the C-ZF variant. Our data support the concept that GATA1 variants located in the different ZF regions can lead to clinically diverse manifestations.
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Cell landscape of larval and adult Xenopus laevis at single-cell resolution. Nat Commun 2022; 13:4306. [PMID: 35879314 PMCID: PMC9314398 DOI: 10.1038/s41467-022-31949-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 07/12/2022] [Indexed: 11/09/2022] Open
Abstract
The rapid development of high-throughput single-cell RNA sequencing technology offers a good opportunity to dissect cell heterogeneity of animals. A large number of organism-wide single-cell atlases have been constructed for vertebrates such as Homo sapiens, Macaca fascicularis, Mus musculus and Danio rerio. However, an intermediate taxon that links mammals to vertebrates of more ancient origin is still lacking. Here, we construct the first Xenopus cell landscape to date, including larval and adult organs. Common cell lineage-specific transcription factors have been identified in vertebrates, including fish, amphibians and mammals. The comparison of larval and adult erythrocytes identifies stage-specific hemoglobin subtypes, as well as a common type of cluster containing both larval and adult hemoglobin, mainly at NF59. In addition, cell lineages originating from all three layers exhibits both antigen processing and presentation during metamorphosis, indicating a common regulatory mechanism during metamorphosis. Overall, our study provides a large-scale resource for research on Xenopus metamorphosis and adult organs.
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Meijer K, van Heerde W, Gomez K. Diagnosis of rare bleeding disorders. Haemophilia 2022; 28 Suppl 4:119-124. [PMID: 35521730 DOI: 10.1111/hae.14561] [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: 02/27/2020] [Revised: 05/07/2020] [Accepted: 05/11/2020] [Indexed: 11/30/2022]
Abstract
Rare bleeding disorders result in significant morbidity but are globally underdiagnosed. Advances in genomic testing and specialist laboratory assays have greatly increased the diagnostic armamentarium. This has resulted in the discovery of new genetic causes for rare diseases and a better understanding of the underlying molecular pathology.
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Affiliation(s)
- Karina Meijer
- Division of Thrombosis and Haemostasis, Department of Haematology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - Waander van Heerde
- Radboud University Medical Center, Hemophilia Treatment Centre, Nijmegen-Eindhoven-Maastricht, Nijmegen, The Netherlands.,Enzyre, Nijmegen, The Netherlands
| | - Keith Gomez
- Haemophilia Centre and Thrombosis Unit, Royal Free London NHS Foundation Trust, London, UK
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Zhang X, Li L, Liu P, Tian Y, Gong P. Development of a Transcription Factor-Based Prognostic Model for Predicting the Immune Status and Outcome in Pancreatic Adenocarcinoma. J Immunol Res 2022; 2022:4946020. [PMID: 35571561 PMCID: PMC9098328 DOI: 10.1155/2022/4946020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 03/19/2022] [Indexed: 11/17/2022] Open
Abstract
Pancreatic adenocarcinoma (PAAD) is the most common primary malignancy of the pancreas. Growing studies indicate that transcription factors (TFs) are abnormally expressed in PAAD. We, therefore, aimed to evaluate the effect of TFs in PAAD and develop a TF-based prognostic signature for the patients. The expression of the TFs and the clinical characteristics were obtained from TCGA datasets. The levels of the TFs were evaluated in PAAD tissues or nontumor tissues. Kyoto Encyclopedia of Genes and Genomes (KEGG) was used to determine the potential function of the dysregulated TFs. To create a prognostic signature, we used univariate and multivariate Cox regression. In addition, the relationship between risk score and tumor microenvironment was analyzed. In this study, we observed 19 increased and 10 decreased TFs in PAAD tissues. KEGG assays indicated that dysregulated TFs were involved in transcriptional misregulation in cancer. Multivariate Cox analysis identified two prognostic factors, Zinc finger protein 488 and BCL11A; and we developed a risk score model by these two factors. The Kaplan-Meier estimator suggested that patients with high risk exhibited a shorter overall survival than those with low risk. The receiver operating characteristic curve proved that the accuracy of this prognostic signature was 0.686 in predicting the 5-year survival. In addition, we observed that the high score was distinctly related to advanced tumor stage and immune infiltrates. Taken together, we developed a novel TF-related model which could be applied as a potential prognostic tool for PAAD and may guide the choice of immunotherapies.
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Affiliation(s)
- Xianbin Zhang
- Department of General Surgery & Institute of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Shenzhen University General Hospital & Shenzhen University Clinical Medical Academy, Xueyuan Road 1098, 518055 Shenzhen, China
- Guangdong Provincial Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Xueyuan Road 1066, 518060 Shenzhen, China
- Carson International Cancer Center & Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Xueyuan Road 1066, 518060 Shenzhen, China
| | - Li Li
- Department of General Surgery & Institute of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Shenzhen University General Hospital & Shenzhen University Clinical Medical Academy, Xueyuan Road 1098, 518055 Shenzhen, China
| | - Peng Liu
- Department of General Surgery & Institute of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Shenzhen University General Hospital & Shenzhen University Clinical Medical Academy, Xueyuan Road 1098, 518055 Shenzhen, China
| | - Yu Tian
- Department of General Surgery & Institute of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Shenzhen University General Hospital & Shenzhen University Clinical Medical Academy, Xueyuan Road 1098, 518055 Shenzhen, China
- Department of Epidemiology, Dalian Medical University, Lvshun Road 9, 116044 Dalian, China
| | - Peng Gong
- Department of General Surgery & Institute of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Shenzhen University General Hospital & Shenzhen University Clinical Medical Academy, Xueyuan Road 1098, 518055 Shenzhen, China
- Carson International Cancer Center & Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Shenzhen University Health Science Center, Xueyuan Road 1066, 518060 Shenzhen, China
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10
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Boeckelmann D, Glonnegger H, Sandrock-Lang K, Zieger B. Pathogenic Aspects of Inherited Platelet Disorders. Hamostaseologie 2021; 41:460-468. [PMID: 34942659 DOI: 10.1055/a-1665-6249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Inherited platelet disorders (IPDs) constitute a large heterogeneous group of rare bleeding disorders. These are classified into: (1) quantitative defects, (2) qualitative disorders, or (3) altered platelet production rate disorders or increased platelet turnover. Classically, IPD diagnostic is based on clinical phenotype characterization, comprehensive laboratory analyses (platelet function analysis), and, in former times, candidate gene sequencing. Today, molecular genetic analysis is performed using next-generation sequencing, mostly by targeting enrichment of a gene panel or by whole-exome sequencing. Still, the biochemical and molecular genetic characterization of patients with congenital thrombocytopathias/thrombocytopenia is essential, since postoperative or posttraumatic bleeding often occurs due to undiagnosed platelet defects. Depending upon the kind of surgery or trauma, this bleeding may be life-threatening, e.g., after tonsillectomy or in brain surgery. Undiagnosed platelet defects may lead to additional surgery, hysterectomy, pulmonary bleeding, and even resuscitation. In addition, these increased bleeding symptoms can lead to wound healing problems. Only specialized laboratories can perform the special platelet function analyses (aggregometry, flow cytometry, or immunofluorescent microscopy of the platelets); therefore, many IPDs are still undetected.
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Affiliation(s)
- Doris Boeckelmann
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Hannah Glonnegger
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Kirstin Sandrock-Lang
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Barbara Zieger
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, Medical Center - University of Freiburg, Freiburg, Germany
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11
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Forkhead Box Protein P3 (FOXP3) Represses ATF3 Transcriptional Activity. Int J Mol Sci 2021; 22:ijms222111400. [PMID: 34768829 PMCID: PMC8583784 DOI: 10.3390/ijms222111400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/11/2021] [Accepted: 10/20/2021] [Indexed: 11/17/2022] Open
Abstract
Activating transcription factor 3 (ATF3), a transcription factor and acute stress sensor, is rapidly induced by a variety of pathophysiological signals and is essential in the complex processes in cellular stress response. FOXP3, a well-known breast and prostate tumor suppressor from the X chromosome, is a novel transcriptional repressor for several oncogenes. However, it remains unknown whether ATF3 is the target protein of FOXP3. Herein, we demonstrate that ATF3 expression is regulated by FOXP3. Firstly, we observed that overexpression of FOXP3 reduced ATF3 protein level. Moreover, knockdown FOXP3 by siRNA increased ATF3 expression. Secondly, FOXP3 dose-dependently reduced ATF3 promoter activity in the luciferase reporter assay. Since FOXP3 is regulated by post-translational modifications (PTMs), we next investigated whether PTMs affect FOXP3-mediated ATF3 expression. Interestingly, we observed that phosphorylation mutation on FOXP3 (Y342F) significantly abolished FOXP3-mediated ATF3 expression. However, other PTM mutations on FOXP3, including S418 phosphorylation, K263 acetylation and ubiquitination, and K268 acetylation and ubiquitination, did not alter FOXP3-mediated ATF3 expression. Finally, the FOXP3 binding site was found on ATF3 promoter region by deletion and mutagenesis analysis. Taken together, our results suggest that FOXP3 functions as a novel regulator of ATF3 and that this novel event may be involved in tumor development and progression.
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12
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Establishment of a prognostic model of ten transcription factors in gastric cancer. Genomics 2021; 113:4075-4087. [PMID: 34688795 DOI: 10.1016/j.ygeno.2021.10.009] [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: 05/09/2021] [Revised: 09/23/2021] [Accepted: 10/12/2021] [Indexed: 02/07/2023]
Abstract
Transcription factors (TFs) play an important role in tumors. We integrated and analyzed 13 GPL570 platform gastric cancer (GC) microarrays, identified 10 independent prognostic TFs, and constructed a GC prognostic model. Using GSE26942 as the verification set, the Kaplan-Meier curve showed that the signature distinguish the survival rate of GC patients (P < 0.01), and the AUC values are 0.746 and 0.630, respectively. Compared with the clinicopathological characteristics, the signature is an independent prognostic factor (P < 0.05). A nomogram was established based on the model, and the five-year calibration curve verified that the prediction of the nomogram was almost consistent with the actual survival rate, C-index of 0.747 indicated a moderate prognostic ability. The analysis of target genes of 10 TFs showed that they are closely related to the progression of GC. External database and rt-PCR showed that the RNA and protein expression of TFs are consistent with our analysis.
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13
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Gomez K, Anderson J, Baker P, Biss T, Jennings I, Lowe G, Platton S. Clinical and laboratory diagnosis of heritable platelet disorders in adults and children: a British Society for Haematology Guideline. Br J Haematol 2021; 195:46-72. [PMID: 34435350 DOI: 10.1111/bjh.17690] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Keith Gomez
- Haemophilia Centre and Thrombosis Unit, Royal Free London NHS Foundation Trust, London
| | - Julia Anderson
- Haemophilia Thrombosis and Immunology Centre, Royal Infirmary, NHS Lothian, Edinburgh
| | - Peter Baker
- Haemophilia and Thrombosis Centre, Oxford University Hospitals NHS Foundation Trust, Oxford
| | - Tina Biss
- Haemophilia Comprehensive Care Centre, Royal Victoria Infirmary, Newcastle-upon-Tyne Hospitals NHS Foundation Trust, Newcastle-upon-Tyne
| | - Ian Jennings
- UK NEQAS for Blood Coagulation, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield
| | - Gillian Lowe
- Haemophilia Comprehensive Care Centre, Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - Sean Platton
- Haemophilia Centre, The Royal London Hospital, Barts Health NHS Trust, London, UK
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14
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Specific proteome changes in platelets from individuals with GATA1-, GFI1B-, and RUNX1-linked bleeding disorders. Blood 2021; 138:86-90. [PMID: 33690840 DOI: 10.1182/blood.2020008118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 03/04/2021] [Indexed: 11/20/2022] Open
Abstract
Mutations in the transcription factors GATA binding factor 1 (GATA1), growth factor independence 1B (GFI1B), and Runt-related transcription factor 1 (RUNX1) cause familial platelet and bleeding disorders. Mutant platelets exhibit common abnormalities including an α-granule reduction resulting in a grayish appearance in blood smears. This suggests that similar pathways are deregulated by different transcription factor mutations. To identify common factors, full platelet proteomes from 11 individuals with mutant GATA1R216Q, GFI1BQ287*, RUNX1Q154Rfs, or RUNX1TD2-6 and 28 healthy controls were examined by label-free quantitative mass spectrometry. In total, 2875 platelet proteins were reliably quantified. Clustering analysis of more than 300 differentially expressed proteins revealed profound differences between cases and controls. Among cases, 44 of 143 significantly downregulated proteins were assigned to platelet function, hemostasis, and granule biology, in line with platelet dysfunction and bleedings. Remarkably, none of these proteins were significantly diminished in all affected cases. Similarly, no proteins were commonly overrepresented in all affected cases compared with controls. These data indicate that the studied transcription factor mutations alter platelet proteomes in distinct largely nonoverlapping manners. This work provides the quantitative landscape of proteins that affect platelet function when deregulated by mutated transcription factors in inherited bleeding disorders.
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15
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Zhou L, Chen Z, Wu Y, Lu H, Xin L. Prognostic signature composed of transcription factors accurately predicts the prognosis of gastric cancer patients. Cancer Cell Int 2021; 21:357. [PMID: 34233659 PMCID: PMC8261954 DOI: 10.1186/s12935-021-02008-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/03/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Transcription factors (TFs) are involved in important molecular biological processes of tumor cells and play an essential role in the occurrence and development of gastric cancer (GC). METHODS Combined The Cancer Genome Atlas Program and Genotype-Tissue Expression database to extract the expression of TFs in GC, analyzed the differences, and weighted gene co-expression network analysis to extract TFs related to GC. The cohort including the training and validation cohort. Univariate Cox, least absolute contraction and selection operator (LASSO) regression, and multivariate Cox analysis was used for screening hub TFs to construct the prognostic signature in the training cohort. The Kaplan-Meier (K-M) and the receiver operating characteristic curve (ROC) was drawn to evaluate the predictive ability of the prognostic signature. A nomogram combining clinical information and prognostic signatures of TFs was constructed and its prediction accuracy was evaluated through various methods. The target genes of the hub TFs was predicted and enrichment analysis was performed to understand its molecular biological mechanism. Clinical samples and public data of GC was collected to verify its expression and prognosis. 5-Ethynyl-2'-deoxyuridine and Acridine Orange/Ethidium Bromide staining, flow cytometry and Western-Blot detection were used to analyze the effects of hub-TF ELK3 on the proliferation and apoptosis of gastric cancer in vitro. RESULTS A total of 511 misaligned TFs were obtained and 200 GC-related TFs were exposed from them. After systematic analysis, a prognostic signature composed of 4 TFs (ZNF300, ELK3, SP6, MEF2B) were constructed. The KM and ROC curves demonstrated the good predictive ability in training, verification, and complete cohort. The areas under the ROC curve are respectively 0.737, 0.705, 0.700. The calibration chart verified that the predictive ability of the nomogram constructed by combining the prognostic signature of TFs and clinical information was accurate, with a C-index of 0.714. Enriching the target genes of hub TFs showed that it plays an vital role in tumor progression, and its expression and prognostic verification were consistent with the previous analysis. Among them, ELK3 was proved in vitro, and downregulation of its expression inhibited the proliferation of gastric cancer cells, induced proliferation, and exerted anti-tumor effects. CONCLUSIONS The 4-TFs prognostic signature accurately predicted the overall survival of GC, and ELK3 may be potential therapeutic targets for GC.
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Affiliation(s)
- Liqiang Zhou
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, 1 Minde Road, Donghu District, Nanchang, 330006, Jiangxi, China
| | - Zhiqing Chen
- Molecular Medicine Laboratory, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi, China
| | - You Wu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, 1 Minde Road, Donghu District, Nanchang, 330006, Jiangxi, China
| | - Hao Lu
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, 1 Minde Road, Donghu District, Nanchang, 330006, Jiangxi, China
| | - Lin Xin
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, 1 Minde Road, Donghu District, Nanchang, 330006, Jiangxi, China.
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16
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Liu J, Li Y, Gan Y, Xiao Q, Tian R, Shu G, Yin G. Identification of ZNF26 as a Prognostic Biomarker in Colorectal Cancer by an Integrated Bioinformatic Analysis. Front Cell Dev Biol 2021; 9:671211. [PMID: 34178996 PMCID: PMC8226143 DOI: 10.3389/fcell.2021.671211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 05/11/2021] [Indexed: 01/12/2023] Open
Abstract
The dysregulation of transcriptional factors (TFs) leads to malignant growth and the development of colorectal cancer (CRC). Herein, we sought to identify the transcription factors relevant to the prognosis of colorectal cancer patients. We found 526 differentially expressed TFs using the TCGA database of colorectal cancer patients (n = 544) for the differential analysis of TFs (n = 1,665) with 210 upregulated genes as well as 316 downregulated genes. Subsequently, GO analysis and KEGG pathway analysis were performed for these differential genes for investigating their pathways and function. At the same time, we established a genetic risk scoring model for predicting the overall survival (OS) by using the mRNA expression levels of these differentially regulated TFs, and defined the CRC into low and high-risk categories which showed significant survival differences. The genetic risk scoring model included four high-risk genes (HSF4, HEYL, SIX2, and ZNF26) and two low-risk genes (ETS2 and SALL1), and validated the OS in two GEO databases (p = 0.0023 for the GSE17536, p = 0.0193 for the GSE29623). To analyze the genetic and epigenetic changes of these six risk-related TFs, a unified bioinformatics analysis was conducted. Among them, ZNF26 is progressive in CRC and its high expression is linked with a poor diagnosis as well. Knockdown of ZNF26 inhibits the proliferative capacity of CRC cells. Moreover, the positive association between ZNF26 and cyclins (CDK2, CCNE2, CDK6, CHEK1) was also identified. Therefore, as a novel biomarker, ZNF26 may be a promising candidate in the diagnosis and prognostic evaluation of colorectal cancer.
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Affiliation(s)
- Jiaxin Liu
- Department of Pathology, Xiangya Hospital, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Yimin Li
- Department of Pathology, Xiangya Hospital, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Yaqi Gan
- Department of Pathology, Xiangya Hospital, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Qing Xiao
- Department of Pathology, Xiangya Hospital, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Ruotong Tian
- School of Basic Medical Sciences, Central South University, Changsha, China
| | - Guang Shu
- School of Basic Medical Sciences, Central South University, Changsha, China
| | - Gang Yin
- Department of Pathology, Xiangya Hospital, School of Basic Medical Sciences, Central South University, Changsha, China.,China-Africa Research Center of Infectious Diseases, School of Basic Medical Sciences, Central South University, Changsha, China
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17
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Sant'Antonio E, Camerini C, Rizzo V, Musolino C, Allegra A. Genetic Heterogeneity in Chronic Myeloid Leukemia: How Clonal Hematopoiesis and Clonal Evolution May Influence Prognosis, Treatment Outcome, and Risk of Cardiovascular Events. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2021; 21:573-579. [PMID: 34078586 DOI: 10.1016/j.clml.2021.04.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 04/18/2021] [Accepted: 04/23/2021] [Indexed: 12/17/2022]
Abstract
Chronic myeloid leukemia (CML) has long been considered as a model of cancer caused by a single-driver genetic lesion (BCR/ABL1 rearrangement) that codes for a unique, gain-of-function, deregulated protein. However, in the last decade, high-throughput sequencing technologies have shed light on a more complex genetic landscape, in which additional mutations may be found in different disease phases, including diagnosis. These genetic lesions may even precede the occurrence of the Philadelphia (Ph) chromosome, pointing to an antecedent premalignant state of clonal hematopoiesis (CH) at least in some patients. Preliminary data support the hypothesis that the most frequent CH-associated mutations (DNMT3A, TET2, and ASXL1) may be associated with a risk of vascular event, but a definitive answer for this topic is still lacking. Moreover, several recent studies have linked a much more complex genetic background in chronic-phase CML, including signs of clonal evolution over time, with depth of treatment responses or with patient survival. In the present review, we address the current state of the art on age-related CH, its association with cardiovascular risk, and its pathophysiology; review the current knowledge on CH that precedes the acquisition of the Ph chromosome in CML patients; and discuss available evidence on the prognostic and predictive value of additional mutations in chronic-phase CML, either as a sign of clonal dynamics under treatment or as markers of an antecedent CH.
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Affiliation(s)
- Emanuela Sant'Antonio
- Division of Hematology, Azienda USL Toscana Nord Ovest, Ospedale San Luca, Lucca, Italy.
| | - Chiara Camerini
- Division of Hematology, Azienda USL Toscana Nord Ovest, Ospedale San Luca, Lucca, Italy.
| | - Vincenzo Rizzo
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy.
| | - Caterina Musolino
- Division of Hematology, Department of Human Pathology in Adulthood and Childhood "Gaetano Barresi", University of Messina, Messina, Italy.
| | - Alessandro Allegra
- Division of Hematology, Department of Human Pathology in Adulthood and Childhood "Gaetano Barresi", University of Messina, Messina, Italy.
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18
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Brøns N, Zaninetti C, Ostrowski SR, Petersen J, Greinacher A, Rossing M, Leinøe E. A novel homozygous GFI1B variant in 2 sisters with thrombocytopenia and severe bleeding tendency. Platelets 2020; 32:701-704. [PMID: 32633597 DOI: 10.1080/09537104.2020.1786041] [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: 10/23/2022]
Abstract
Genetic variants in growth factor-independent 1B (GFI1B), encoding transcription factor GFI1B, are causative of platelet-type bleeding disorder-17. Presently, 53 cases of GFI1B associated inherited thrombocytopenia (IT) have been published, however only three were homozygous. The bleeding- and platelet phenotypes of these patients depend on location and inheritance pattern of the GFI1B variant. We report a novel homozygous GFI1B (Thr174Ile) variant located in the first Zinc finger domain of GFI1B in two sisters of Palestinian ancestry born to consanguineous parents. They experienced severe bleeding tendency at moderately reduced platelet counts. Flow cytometry and immunofluorescent microscopy confirmed the diagnostic features of GFI1B associated IT: a reduced content of alpha granules and aberrant expression of the stem cell marker CD34 on platelets. Transcription factor GFI1B is differentially expressed during hemato- and lymphopoiesis. In addition, to platelet function investigations, we present results of lymphoid subgroup analyses and deformability of red cells measured by ektacytometry.
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Affiliation(s)
- Nanna Brøns
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Carlo Zaninetti
- Department of Clinical Immunology, Greifswald University Hospital, Greifswald, Germany
| | - Sisse Rye Ostrowski
- Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Jesper Petersen
- Department of Haematology Research Laboratory, Herlev Hospital, Copenhagen University Hospital, Denmark
| | - Andreas Greinacher
- Department of Clinical Immunology, Greifswald University Hospital, Greifswald, Germany
| | - Maria Rossing
- Center for Genomic Medicine, Copenhagen University Hospital, Rigshospitalet, Denmark
| | - Eva Leinøe
- Department of Hematology, Copenhagen University Hospital, Rigshospitalet, Denmark
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19
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Brunet J, Badin M, Chong M, Iyer J, Tasneem S, Graf L, Rivard GE, Paterson AD, Pare G, Hayward CPM. Bleeding risks for uncharacterized platelet function disorders. Res Pract Thromb Haemost 2020; 4:799-806. [PMID: 32685888 PMCID: PMC7354414 DOI: 10.1002/rth2.12374] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 04/21/2020] [Accepted: 04/26/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND The bleeding risks for nonsyndromic platelet function disorders (PFDs) that impair aggregation responses and/or cause dense granule deficiency (DGD) are uncertain. OBJECTIVES Our goal was to quantify bleeding risks for a cohort of consecutive cases with uncharacterized PFD. METHODS Sequential cases with uncharacterized PFDs that had reduced maximal aggregation (MA) with multiple agonists and/or nonsyndromic DGD were invited to participate along with additional family members to reduce bias. Index cases were further evaluated by exome sequencing, with analysis of RUNX1-dependent genes for cases with RUNX1 sequence variants. Bleeding assessment tools were used to estimate bleeding scores, with bleeding risks estimated as odds ratios (ORs) relative to general population controls. Relationships between symptoms and laboratory findings were also explored. RESULTS Participants with uncharacterized PFD (n = 37; 23 index cases) had impaired aggregation function (70%), nonsyndromic DGD (19%) or both (11%), unlike unaffected relatives. Probable pathogenic RUNX1 variants were found in 2 (9%) index cases/families, whereas others had PFD of unknown cause. Participants with PFD had increased bleeding scores compared to unaffected family members and general population controls, and increased risks for mucocutaneous (OR, 4-207) and challenge-related bleeding (OR, 12-43), and for receiving transfusions for bleeding (OR, 100). Reduced MA with collagen was associated with wound healing problems and bruising, and more severe DGD was associated with surgical bleeding (P < .04). CONCLUSIONS PFDs that impair MA and/or cause nonsyndromic DGD have significantly increased bleeding risks, and some symptoms are more common in those with more severe DGD or impaired collagen aggregation.
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Affiliation(s)
- Justin Brunet
- Department of Pathology and Molecular MedicineMcMaster UniversityHamiltonONCanada
| | - Matthew Badin
- Department of Pathology and Molecular MedicineMcMaster UniversityHamiltonONCanada
| | - Michael Chong
- Department of Pathology and Molecular MedicineMcMaster UniversityHamiltonONCanada
| | - Janaki Iyer
- Department of Pathology and Molecular MedicineMcMaster UniversityHamiltonONCanada
| | - Subia Tasneem
- Department of Pathology and Molecular MedicineMcMaster UniversityHamiltonONCanada
| | - Lucas Graf
- Department of Pathology and Molecular MedicineMcMaster UniversityHamiltonONCanada
- Centre for Laboratory Medicine and Hemophilia and Hemostasis CentreSt. GallenSwitzerland
| | | | - Andrew D. Paterson
- Genetics and Genome BiologyThe Hospital for Sick ChildrenTorontoONCanada
- The Dalla Lana School of Public Health and Institute of Medical SciencesUniversity of TorontoTorontoONCanada
| | - Guillaume Pare
- Department of Pathology and Molecular MedicineMcMaster UniversityHamiltonONCanada
| | - Catherine P. M. Hayward
- Department of Pathology and Molecular MedicineMcMaster UniversityHamiltonONCanada
- Department of MedicineMcMaster UniversityHamiltonONCanada
- Hamilton Regional Laboratory Medicine ProgramMcMaster UniversityHamiltonONCanada
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20
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Meijer K, van Heerde W, Gomez K. Diagnosis of rare bleeding disorders. Haemophilia 2020; 27 Suppl 3:60-65. [PMID: 32578312 DOI: 10.1111/hae.14049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 05/07/2020] [Accepted: 05/11/2020] [Indexed: 11/27/2022]
Abstract
Rare bleeding disorders result in significant morbidity but are globally underdiagnosed. Advances in genomic testing and specialist laboratory assays have greatly increased the diagnostic armamentarium. This has resulted in the discovery of new genetic causes for rare diseases and a better understanding of the underlying molecular pathology.
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Affiliation(s)
- Karina Meijer
- Division of Thrombosis and Haemostasis, Department of Haematology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - Waander van Heerde
- Radboud University Medical Center, Hemophilia Treatment Centre, Nijmegen-Eindhoven-Maastricht, Nijmegen, The Netherlands.,Enzyre, Nijmegen, The Netherlands
| | - Keith Gomez
- Haemophilia Centre and Thrombosis Unit, Royal Free London NHS Foundation Trust, London, UK
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21
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Veninga A, De Simone I, Heemskerk JWM, Cate HT, van der Meijden PEJ. Clonal hematopoietic mutations linked to platelet traits and the risk of thrombosis or bleeding. Haematologica 2020; 105:2020-2031. [PMID: 32554558 PMCID: PMC7395290 DOI: 10.3324/haematol.2019.235994] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/04/2020] [Indexed: 12/14/2022] Open
Abstract
Platelets are key elements in thrombosis, particularly in atherosclerosis-associated arterial thrombosis (atherothrombosis), and hemostasis. Megakaryocytes in the bone marrow, differentiated from hematopoietic stem cells are generally considered as a uniform source of platelets. However, recent insights into the causes of malignancies, including essential thrombocytosis, indicate that not only inherited but also somatic mutations in hematopoietic cells are linked to quantitative or qualitative platelet abnormalities. In particular cases, these form the basis of thrombo-hemorrhagic complications regularly observed in patient groups. This has led to the concept of clonal hematopoiesis of indeterminate potential (CHIP), defined as somatic mutations caused by clonal expansion of mutant hematopoietic cells without evident disease. This concept also provides clues regarding the importance of platelet function in relation to cardiovascular disease. In this summative review, we present an overview of genes associated with clonal hematopoiesis and altered platelet production and/or functionality, like mutations in JAK2 We consider how reported CHIP genes can influence the risk of cardiovascular disease, by exploring the consequences for platelet function related to (athero)thrombosis, or the risk of bleeding. More insight into the functional consequences of the CHIP mutations may favor personalized risk assessment, not only with regard to malignancies but also in relation to thrombotic vascular disease.
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Affiliation(s)
- Alicia Veninga
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht
| | - Ilaria De Simone
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht
| | - Johan W M Heemskerk
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht
| | - Hugo Ten Cate
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht.,Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center, Maastricht.,Department of Internal Medicine, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Paola E J van der Meijden
- Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht .,Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center, Maastricht
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22
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Gomez K. New information on rare diseases ‐ how important is that for us? Br J Haematol 2019; 185:819-820. [DOI: 10.1111/bjh.15833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keith Gomez
- Katherine Dormandy Haemophilia Centre and Thrombosis Unit Royal Free London NHS Foundation Trust London UK
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Kong X, Ma L, Chen E, Shaw CA, Edelstein LC. Identification of the Regulatory Elements and Target Genes of Megakaryopoietic Transcription Factor MEF2C. Thromb Haemost 2019; 119:716-725. [PMID: 30731491 PMCID: PMC6932631 DOI: 10.1055/s-0039-1678694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Megakaryopoiesis produces specialized haematopoietic stem cells in the bone marrow that give rise to megakaryocytes which ultimately produce platelets. Defects in megakaryopoiesis can result in altered platelet counts and physiology, leading to dysfunctional haemostasis and thrombosis. Additionally, dysregulated megakaryopoiesis is also associated with myeloid pathologies. Transcription factors play critical roles in cell differentiation by regulating the temporal and spatial patterns of gene expression which ultimately decide cell fate. Several transcription factors have been described as regulating megakaryopoiesis including myocyte enhancer factor 2C (MEF2C); however, the genes regulated by MEF2C that influence megakaryopoiesis have not been reported. Using chromatin immunoprecipitation-sequencing and Gene Ontology data we identified five candidate genes that are bound by MEF2C and regulate megakaryopoiesis: MOV10, AGO3, HDAC1, RBBP5 and WASF2. To study expression of these genes, we silenced MEF2C gene expression in the Meg01 megakaryocytic cell line and in induced pluripotent stem cells by CRISPR/Cas9 editing. We also knocked down MEF2C expression in cord blood-derived haematopoietic stem cells by siRNA. We found that absent or reduced MEF2C expression resulted in defects in megakaryocytic differentiation and reduced levels of the candidate target genes. Luciferase assays confirmed that genomic sequences within the target genes are regulated by MEF2C levels. Finally, we demonstrate that small deletions linked to a platelet count-associated single nucleotide polymorphism alter transcriptional activity, suggesting a mechanism by which genetic variation in MEF2C alters platelet production. These data help elucidate the mechanism behind MEF2C regulation of megakaryopoiesis and genetic variation driving platelet production.
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Affiliation(s)
- Xianguo Kong
- Cardeza Foundation for Hematologic Research and Department of Medicine, Sidney Kimmel Medical School at Thomas Jefferson University, Philadelphia, PA
| | - Lin Ma
- Cardeza Foundation for Hematologic Research and Department of Medicine, Sidney Kimmel Medical School at Thomas Jefferson University, Philadelphia, PA
| | - Edward Chen
- Department of Human & Molecular Genetics, Baylor College of Medicine, Houston, TX
| | - Chad A. Shaw
- Department of Human & Molecular Genetics, Baylor College of Medicine, Houston, TX
- Department of Statistics, Rice University, Houston, TX
| | - Leonard C. Edelstein
- Cardeza Foundation for Hematologic Research and Department of Medicine, Sidney Kimmel Medical School at Thomas Jefferson University, Philadelphia, PA
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Rost MS, Shestopalov I, Liu Y, Vo AH, Richter CE, Emly SM, Barrett FG, Stachura DL, Holinstat M, Zon LI, Shavit JA. Nfe2 is dispensable for early but required for adult thrombocyte formation and function in zebrafish. Blood Adv 2018; 2:3418-3427. [PMID: 30504234 PMCID: PMC6290098 DOI: 10.1182/bloodadvances.2018021865] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 10/31/2018] [Indexed: 12/20/2022] Open
Abstract
The NFE2 transcription factor is expressed in multiple hematopoietic lineages with a well-defined role in regulating megakaryocyte biogenesis and platelet production in mammals. Mice deficient in NFE2 develop severe thrombocytopenia with lethality resulting from neonatal hemorrhage. Recent data in mammals reveal potential differences in embryonic and adult thrombopoiesis. Multiple studies in zebrafish have revealed mechanistic insights into hematopoiesis, although thrombopoiesis has been less studied. Rather than platelets, zebrafish possess thrombocytes, which are nucleated cells with similar functional properties. Using transcription activator-like effector nucleases to generate mutations in nfe2, we show that unlike mammals, zebrafish survive to adulthood in the absence of Nfe2. Despite developing severe thrombocytopenia, homozygous mutants do not display overt hemorrhage or reduced survival. Surprisingly, quantification of circulating thrombocytes in mutant 6-day-old larvae revealed no significant differences from wild-type siblings. Both wild-type and nfe2 null larvae formed thrombocyte-rich clots in response to endothelial injury. In addition, ex vivo thrombocytic colony formation was intact in nfe2 mutants, and adult kidney marrow displayed expansion of hematopoietic progenitors. These data suggest that loss of Nfe2 results in a late block in adult thrombopoiesis, with secondary expansion of precursors: features consistent with mammals. Overall, our data suggest parallels with erythropoiesis, including distinct primitive and definitive pathways of development and potential for a previously unknown Nfe2-independent pathway of embryonic thrombopoiesis. Long-term homozygous mutant survival will facilitate in-depth study of Nfe2 deficiency in vivo, and further investigation could lead to alternative methodologies for the enhancement of platelet production.
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Affiliation(s)
- Megan S Rost
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI
| | - Ilya Shestopalov
- Boston Children's Hospital and Harvard Medical School, Boston, MA
| | - Yang Liu
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI
| | - Andy H Vo
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI
| | - Catherine E Richter
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI
| | - Sylvia M Emly
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI
| | | | - David L Stachura
- Department of Biological Sciences, California State University Chico, Chico, CA
| | - Michael Holinstat
- Department of Pharmacology, University of Michigan, Ann Arbor, MI; and
| | - Leonard I Zon
- Boston Children's Hospital and Harvard Medical School, Boston, MA
- Stem Cell Program and Division of Hematology/Oncology, Harvard Stem Cell Institute, Stem Cell and Regenerative Biology Department, Dana-Farber Cancer Institute and Howard Hughes Medical Institute, Boston, MA
| | - Jordan A Shavit
- Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, MI
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25
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Bastida JM, Lozano ML, Benito R, Janusz K, Palma-Barqueros V, Del Rey M, Hernández-Sánchez JM, Riesco S, Bermejo N, González-García H, Rodriguez-Alén A, Aguilar C, Sevivas T, López-Fernández MF, Marneth AE, van der Reijden BA, Morgan NV, Watson SP, Vicente V, Hernández-Rivas JM, Rivera J, González-Porras JR. Introducing high-throughput sequencing into mainstream genetic diagnosis practice in inherited platelet disorders. Haematologica 2017; 103:148-162. [PMID: 28983057 PMCID: PMC5777202 DOI: 10.3324/haematol.2017.171132] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 09/29/2017] [Indexed: 12/30/2022] Open
Abstract
Inherited platelet disorders are a heterogeneous group of rare diseases, caused by inherited defects in platelet production and/or function. Their genetic diagnosis would benefit clinical care, prognosis and preventative treatments. Until recently, this diagnosis has usually been performed via Sanger sequencing of a limited number of candidate genes. High-throughput sequencing is revolutionizing the genetic diagnosis of diseases, including bleeding disorders. We have designed a novel high-throughput sequencing platform to investigate the unknown molecular pathology in a cohort of 82 patients with inherited platelet disorders. Thirty-four (41.5%) patients presented with a phenotype strongly indicative of a particular type of platelet disorder. The other patients had clinical bleeding indicative of platelet dysfunction, but with no identifiable features. The high-throughput sequencing test enabled a molecular diagnosis in 70% of these patients. This sensitivity increased to 90% among patients suspected of having a defined platelet disorder. We found 57 different candidate variants in 28 genes, of which 70% had not previously been described. Following consensus guidelines, we qualified 68.4% and 26.3% of the candidate variants as being pathogenic and likely pathogenic, respectively. In addition to establishing definitive diagnoses of well-known inherited platelet disorders, high-throughput sequencing also identified rarer disorders such as sitosterolemia, filamin and actinin deficiencies, and G protein-coupled receptor defects. This included disease-causing variants in DIAPH1 (n=2) and RASGRP2 (n=3). Our study reinforces the feasibility of introducing high-throughput sequencing technology into the mainstream laboratory for the genetic diagnostic practice in inherited platelet disorders.
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Affiliation(s)
- José M Bastida
- Servicio de Hematología, Hospital Universitario de Salamanca-IBSAL-USAL, Spain .,On behalf of the Project "Functional and Molecular Characterization of Patients with Inherited Platelet Disorders" of the Hemorrhagic Diathesis Working Group of the Spanish Society of Thrombosis and Haemostasis
| | - María L Lozano
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, CB15/00055-CIBERER, Spain.,On behalf of the Project "Functional and Molecular Characterization of Patients with Inherited Platelet Disorders" of the Hemorrhagic Diathesis Working Group of the Spanish Society of Thrombosis and Haemostasis
| | - Rocío Benito
- IBSAL, IBMCC, CIC, Universidad de Salamanca-CSIC, Spain
| | - Kamila Janusz
- IBSAL, IBMCC, CIC, Universidad de Salamanca-CSIC, Spain
| | - Verónica Palma-Barqueros
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, CB15/00055-CIBERER, Spain
| | | | | | - Susana Riesco
- Servicio de Pediatría, Hospital Universitario de Salamanca-IBSAL, Spain
| | - Nuria Bermejo
- Servicio de Hematología, Complejo Hospitalario San Pedro Alcántara, Cáceres, Spain
| | | | - Agustín Rodriguez-Alén
- Servicio de Hematología y Hemoterapia, Hospital Virgen de la Salud, Complejo Hospitalario de Toledo, Spain
| | - Carlos Aguilar
- Servicio de Hematología, Complejo Asistencial de Soria, Spain
| | - Teresa Sevivas
- Serviço de Imunohemoterapia, Sangue e Medicina Transfusional do Centro Hospitalar e Universitário de Coimbra, EPE, Portugal
| | | | - Anna E Marneth
- Department of Laboratory Medicine, Laboratory of Hematology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Bert A van der Reijden
- Department of Laboratory Medicine, Laboratory of Hematology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Neil V Morgan
- Birmingham Platelet Group, Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, UK
| | - Steve P Watson
- Birmingham Platelet Group, Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, UK
| | - Vicente Vicente
- On behalf of the Project "Functional and Molecular Characterization of Patients with Inherited Platelet Disorders" of the Hemorrhagic Diathesis Working Group of the Spanish Society of Thrombosis and Haemostasis
| | - Jesús M Hernández-Rivas
- Servicio de Hematología, Hospital Universitario de Salamanca-IBSAL-USAL, Spain.,IBSAL, IBMCC, CIC, Universidad de Salamanca-CSIC, Spain
| | - José Rivera
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, Universidad de Murcia, IMIB-Arrixaca, CB15/00055-CIBERER, Spain.,On behalf of the Project "Functional and Molecular Characterization of Patients with Inherited Platelet Disorders" of the Hemorrhagic Diathesis Working Group of the Spanish Society of Thrombosis and Haemostasis
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26
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Niemeyer CM, Mecucci C. Practical considerations for diagnosis and management of patients and carriers. Semin Hematol 2017. [DOI: 10.1053/j.seminhematol.2017.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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27
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Jurk K. Platelet granules - secretory and secretive. Hamostaseologie 2016; 37:208-210. [PMID: 27656707 DOI: 10.5482/hamo-16-07-0023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 09/07/2016] [Indexed: 11/05/2022] Open
Abstract
The article reviews three recent publications addressing physiological and pathological aspects of platelet granules and release as well as limitations of recent screening tests for diagnosis of non-syndromic inherited δ-storage pool disease (1-3).
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Affiliation(s)
- Kerstin Jurk
- PD Dr. rer. nat. Kerstin Jurk Center for Thrombosis and Hemostasis (CTH) University Medical Center Mainz Langenbeckstr. 1, 55131 Mainz, Germany E-Mail:
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