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https://www.readbyqxmd.com/read/29681085/two-novel-cases-expanding-the-phenotype-of-setd2-related-overgrowth-syndrome
#1
Maartje C van Rij, Iris H I M Hollink, Paulien Anna Terhal, Sarina G Kant, Claudia Ruivenkamp, Arie van Haeringen, J Anneke Kievit, Martine J van Belzen
The SETD2-related overgrowth syndrome is also called "Luscan-Lumish syndrome" (OMIM 616831) with the clinical characteristics of intellectual disability, speech delay, macrocephaly, facial dysmorphism, and autism spectrum disorders. We report on two novel patients a 4.5-year-old boy and a 23-year-old female adolescent with a speech and language developmental delay, autism spectrum disorder and macrocephaly, who were both diagnosed with SETD2-related overgrowth syndrome due to de novo frameshift mutations in the SETD2 gene...
May 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29674707/targeted-genomic-landscape-of-metastases-compared-to-primary-tumours-in-clear-cell-metastatic-renal-cell-carcinoma
#2
Guillermo de Velasco, Stephanie A Wankowicz, Russell Madison, Siraj M Ali, Craig Norton, Audrey Duquette, Jeffrey S Ross, Dominick Bossé, Aly-Khan A Lalani, Vincent A Miller, Philip J Stephens, Lauren Young, A Ari Hakimi, Sabina Signoretti, Sumanta K Pal, Toni K Choueiri
BACKGROUND: The genomic landscape of primary clear cell renal cell carcinoma (ccRCC) has been well described. However, little is known about cohort genomic alterations (GA) landscape in ccRCC metastases, or how it compares to primary tumours in aggregate. The genomic landscape of metastases may have biological, clinical, and therapeutic implications. METHODS: We collected targeted next-generation sequencing mutation calls from two independent cohorts and described the metastases GA landscape and descriptively compared it to the GA landscape in primary tumours...
April 20, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/29650642/setd2-regulates-quiescence-and-differentiation-of-adult-hematopoietic-stem-cells-by-restricting-rna-polymerase-ii-elongation
#3
Yile Zhou, Xiaomei Yan, Xiaomin Feng, Jiachen Bu, Yunzhu Dong, Peipei Lin, Yoshihiro Hayashi, Rui Huang, Andre Olsson, Paul R Andreassen, H Leighton Grimes, Qian-Fei Wang, Tao Cheng, Zhijian Xiao, Jie Jin, Gang Huang
SET domain containing 2 (Setd2), encoding a histone methyltransferase, is associated with many hematopoietic diseases when mutated. By generating a novel exon 6 conditional knockout mouse model, we described an essential role of Setd2 in maintaining the adult hematopoietic stem cells. Loss of Setd2 results in leukopenia, anemia, and increased platelet accompanied with hypocellularity, erythroid dysplasia, and mild fibrosis in bone marrow. Setd2 knockout mice show significantly decreased hematopoietic stem and progenitor cells except for erythroid progenitors...
April 12, 2018: Haematologica
https://www.readbyqxmd.com/read/29572486/setd2-linking-stem-cell-survival-and-transformation
#4
Mrinal M Patnaik, Omar Abdel-Wahab
No abstract text is available yet for this article.
March 23, 2018: Cell Research
https://www.readbyqxmd.com/read/29558292/synergy-of-sex-differences-in-visceral-fat-measured-with-ct-and-tumor-metabolism-helps-predict-overall-survival-in-patients-with-renal-cell-carcinoma
#5
Gerard K Nguyen, Vincent M Mellnick, Aldrin Kay-Yuen Yim, Amber Salter, Joseph E Ippolito
Purpose To determine if sex differences in abdominal visceral fat composition, measured by using computed tomography (CT), and tumor glucose metabolism, measured by gene expression, can help predict outcomes in patients with clear cell renal cell carcinoma (RCC). Materials and Methods This retrospective cohort study included 222 patients with clear cell RCC from The Cancer Imaging Atlas. By using CT, body fat was segmented into subcutaneous fat and visceral fat areas (VFAs) and normalized to total fat to obtain the relative VFA (rVFA) and relative subcutaneous fat area...
March 20, 2018: Radiology
https://www.readbyqxmd.com/read/29531312/setd2-deficiency-impairs-hematopoietic-stem-cell-self-renewal-and-causes-malignant-transformation
#6
Yuan-Liang Zhang, Jie-Wen Sun, Yin-Yin Xie, Yan Zhou, Ping Liu, Jia-Chun Song, Chun-Hui Xu, Lan Wang, Dan Liu, Ai-Ning Xu, Zhu Chen, Sai-Juan Chen, Xiao-Jian Sun, Qiu-Hua Huang
The histone H3 lysine 36 methyltransferase SETD2 is frequently mutated in various cancers, including leukemia. However, there has not been any functional model to show the contribution of SETD2 in hematopoiesis or the causal role of SETD2 mutation in tumorigenesis. In this study, using a conditional Setd2 knockout mouse model, we show that Setd2 deficiency skews hematopoietic differentiation and reduces the number of multipotent progenitors; although the number of phenotypic hematopoietic stem cells (HSCs) in Setd2-deleted mice is unchanged, functional assays, including serial BM transplantation, reveal that the self-renewal and competitiveness of HSCs are impaired...
March 12, 2018: Cell Research
https://www.readbyqxmd.com/read/29522714/setd2-indicates-favourable-prognosis-in-gastric-cancer-and-suppresses-cancer-cell-proliferation-migration-and-invasion
#7
Ziyi Chen, Chetnadevi Raghoonundun, Weidong Chen, Yanan Zhang, Wenhao Tang, Xin Fan, Xin Shi
SET domain containing protein 2 (SETD2, also known as HYPB) is a 230-kD protein which is located at cytogenetic band p21.31 of chromosome 3. SETD2 is usually transformed or eradicated in multiple forms of tumours in humans. However, its primary function in gastric cancer (GC) remains unclear. In the current study, we investigated the mRNA and protein expression levels of SETD2 using immunohistochemistry, qPCR, RT-PCR, and immunoblotting. The function of SETD2 in GC cells was investigated by MTT and transwell assays...
March 6, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29504908/exome-analysis-of-carotid-body-tumor
#8
Anastasiya V Snezhkina, Elena N Lukyanova, Dmitry V Kalinin, Anatoly V Pokrovsky, Alexey A Dmitriev, Nadezhda V Koroban, Elena A Pudova, Maria S Fedorova, Nadezhda N Volchenko, Oleg A Stepanov, Ekaterina A Zhevelyuk, Sergey L Kharitonov, Anastasiya V Lipatova, Ivan S Abramov, Alexander V Golovyuk, Yegor E Yegorov, Khava S Vishnyakova, Alexey A Moskalev, George S Krasnov, Nataliya V Melnikova, Dmitry S Shcherbo, Marina V Kiseleva, Andrey D Kaprin, Boris Y Alekseev, Andrew R Zaretsky, Anna V Kudryavtseva
BACKGROUND: Carotid body tumor (CBT) is a form of head and neck paragangliomas (HNPGLs) arising at the bifurcation of carotid arteries. Paragangliomas are commonly associated with germline and somatic mutations involving at least one of more than thirty causative genes. However, the specific functionality of a number of these genes involved in the formation of paragangliomas has not yet been fully investigated. METHODS: Exome library preparation was carried out using Nextera® Rapid Capture Exome Kit (Illumina, USA)...
February 13, 2018: BMC Medical Genomics
https://www.readbyqxmd.com/read/29499398/epigenetic-alteration-of-mismatch-repair-genes-in-the-population-chronically-exposed-to-arsenic-in-west-bengal-india
#9
Pritha Bhattacharjee, Tamalika Sanyal, Sandip Bhattacharjee, Pritha Bhattacharjee
INTRODUCTION: Arsenic exposure and its adverse health outcome, including the association with cancer risk are well established from several studies across the globe. The present study aims to analyze the epigenetic regulation of key mismatch repair (MMR) genes in the arsenic-exposed population. METHOD: A case-control study was conducted involving two hundred twenty four (N=224) arsenic exposed [with skin lesion (WSL=110) and without skin lesion (WOSL=114)] and one hundred and two (N=102) unexposed individuals...
February 27, 2018: Environmental Research
https://www.readbyqxmd.com/read/29486199/loss-of-chromatin-remodeling-proteins-and-or-cdkn2a-associates-with-metastasis-of-pancreatic-neuroendocrine-tumors-and-reduced-patient-survival-times
#10
Somak Roy, William A LaFramboise, Ta-Chiang Liu, Dengfeng Cao, Alyssa Luvison, Caitlyn Miller, Maureen A Lyons, Roderick J O'Sullivan, Amer H Zureikat, Melissa E Hogg, Allan Tsung, Kenneth K Lee, Nathan Bahary, Randall E Brand, Jennifer S Chennat, Kenneth E Fasanella, Kevin McGrath, Marina N Nikiforova, Georgios I Papachristou, Adam Slivka, Herbert J Zeh, Aatur D Singhi
Despite prognostic grading and staging systems, it is a challenge to predict outcomes for patients with pancreatic neuroendocrine tumors (PanNETs). Sequencing studies of PanNETs have identified alterations in death domain-associated protein (DAXX) and ATRX chromatin remodeler (ATRX). In tumors, mutations in DAXX or ATRX and corresponding loss of protein expression correlate with shorter times of disease-free survival and disease-specific survival of patients. However, DAXX or ATRX proteins were lost in only 50% of distant metastases analyzed...
February 24, 2018: Gastroenterology
https://www.readbyqxmd.com/read/29465421/molecular-and-metabolic-basis-of-clear-cell-carcinoma-of-the-kidney
#11
Mohammed Akhtar, Issam A Al-Bozom, Turki Al Hussain
Renal cell carcinoma (RCC) is a heterogenous group of tumors, >70% of which belong to the category of clear cell carcinoma. In recent years, crucial advances have been made in our understanding of the molecular and metabolic basis of clear cell carcinoma. This tumor manifests significant alterations in the cellular metabolism, so that the tumor cells preferentially induce the hypoxia response pathway using aerobic glycolysis, rather than the normal oxidative phosphorylation for energy. Most of the clear cell carcinomas (sporadic as well as familial) have mutations and deletions in the VHL gene located at 3p (p3...
May 2018: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/29465369/altered-gene-expression-profiles-of-histone-lysine-methyltransferases-and-demethylases-in-rheumatoid-arthritis-synovial-fibroblasts
#12
Yasuto Araki, Yoshimi Aizaki, Kojiro Sato, Hiromi Oda, Riki Kurokawa, Toshihide Mimura
OBJECTIVES: Aberrant histone lysine methylation (HKM) has been reported in rheumatoid arthritis (RA) synovial fibroblasts (SFs). As histone lysine methyltransferases (HKMTs) and demethylases (HKDMs) regulate HKM, these enzymes are believed to be dysregulated in RASFs. The aim of this study is to clarify whether gene expressions of HKMTs and HKDMs are altered in RASFs. METHODS: SFs were isolated from synovial tissues obtained from RA or osteoarthritis (OA) patients during total knee joint replacement...
January 31, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29447173/dynamic-changes-of-setd2-a-histone-h3k36-methyltransferase-in-porcine-oocytes-ivf-and-scnt-embryos
#13
Yun Fei Diao, Tao Lin, Xiaoxia Li, Reza K Oqani, Jae Eun Lee, So Yeon Kim, Dong Il Jin
SETD2 (SET domain containing protein 2) acts as a histone H3 lysine 36 (H3K36)-specific methyltransferase and may play important roles in active gene transcription in human cells. However, its expression and role in porcine oocytes and preimplantation embryos are not well understood. Here, we used immunofluorescence and laser scanning confocal microscopy to examine SETD2 expression in porcine fetal fibroblasts, oocytes, and preimplantation embryos derived from in vitro fertilization (IVF), parthenogenetic activation (PA), and somatic cell nuclear transfer (SCNT)...
2018: PloS One
https://www.readbyqxmd.com/read/29371938/large-scale-copy-number-analysis-reveals-variations-in-genes-not-previously-associated-with-malignant-pleural-mesothelioma
#14
Marieke Hylebos, Guy Van Camp, Geert Vandeweyer, Erik Fransen, Matthias Beyens, Robin Cornelissen, Arvid Suls, Patrick Pauwels, Jan P van Meerbeeck, Ken Op de Beeck
Malignant pleural mesothelioma (MPM) is an aggressive tumor that is often causally associated with asbestos exposure. Comparative genomic hybridization techniques and arrays demonstrated a complex set of copy number variations (CNVs) in the MPM-genome. These techniques however have a limited resolution, throughput and flexibility compared to next-generation sequencing platforms. In this study, the presence of CNVs in the MPM-genome was investigated using an MPM-cohort ( N = 85) for which genomic microarray data are available through 'The Cancer Genome Atlas' (TCGA)...
December 26, 2017: Oncotarget
https://www.readbyqxmd.com/read/29337025/hepatosplenic-t-cell-lymphoma-a-review-of-clinicopathologic-features-pathogenesis-and-prognostic-factors
#15
Mariko Yabe, Roberto N Miranda, L Jeffrey Medeiros
Hepatosplenic T-cell lymphoma (HSTCL) is a rare and clinically aggressive type of T-cell lymphoma that arises most often in adolescents and young adults. Patients with HSTCL commonly present with B-symptoms and cytopenias which may suggest a diagnosis of acute leukemia initially. Patients present with extranodal disease involving the spleen, liver and bone marrow; lymphadenopathy is usually absent. The lymphoma cells can show a spectrum of cell sizes and are of T-cell lineage, often negative for CD4 and CD8 and positive for T-cell receptor γδ or, less often, αβ...
January 11, 2018: Human Pathology
https://www.readbyqxmd.com/read/29305415/histone-modifier-gene-mutations-in-peripheral-t-cell-lymphoma-not-otherwise-specified
#16
Meng-Meng Ji, Yao-Hui Huang, Jin-Yan Huang, Zhao-Fu Wang, Di Fu, Han Liu, Feng Liu, Christophe Leboeuf, Li Wang, Jing Ye, Yi-Ming Lu, Anne Janin, Shu Cheng, Wei-Li Zhao
Due to heterogeneous morphological and immunophenotypic features, approximately 50% of peripheral T-cell lymphomas are unclassifiable and categorized as peripheral T-cell lymphomas, not otherwise specified. These conditions have an aggressive course and poor clinical outcome. Identification of actionable biomarkers is urgently needed to develop better therapeutic strategies. Epigenetic alterations play a crucial role in tumor progression. Histone modifications, particularly methylation and acetylation, are generally involved in chromatin state regulation...
April 2018: Haematologica
https://www.readbyqxmd.com/read/29249820/setd2-mediated-crosstalk-between-h3k36me3-and-h3k79me2-in-mll-rearranged-leukemia
#17
J Bu, A Chen, X Yan, F He, Y Dong, Y Zhou, J He, D Zhan, P Lin, Y Hayashi, Y Sun, Y Zhang, Z Xiao, H L Grimes, Q F Wang, G Huang
Previously, we identified SETD2 loss-of-function mutations in 22% of MLL-rearranged (MLLr) acute leukemia patients, implicating a mechanism for cooperativity between SETD2 mutations and MLL fusions. However, the detailed mechanism of how SETD2-H3K36me3 downregulation accelerates MLLr leukemia remains unclear. Here, we show that in MLLr leukemia, both H3K79me2 and H3K36me3 are aberrantly elevated and co-enriched in a group of genes. SETD2 inactivation leads to a global reduction of H3K36me3 and a further elevation of H3K79me2, but does not change the expression of known MLL fusion target genes...
November 29, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/29242204/setd2-a-complex-role-in-blood-malignancy
#18
COMMENT
Jonathan D Licht
No abstract text is available yet for this article.
December 14, 2017: Blood
https://www.readbyqxmd.com/read/29145046/genetic-and-clinical-characteristics-of-phyllodes-tumors-of-the-breast
#19
Ji-Yeon Kim, Jong Han Yu, Seok Jin Nam, Seok Won Kim, Se Kyung Lee, Woong-Yang Park, Dong-Young Noh, Do-Hyun Nam, Yeon Hee Park, Wonshik Han, Jeong Eon Lee
PURPOSE: Phyllodes tumors (PTs) of the breast are rare, accounting for less than 1% of all breast tumors. Among PTs, malignant PTs (MPTs) have malignant characteristics and distant metastases occur in about 20% to 30% of MPTs. However, there is no effective treatment for MPTs with distant metastasis, resulting in an abject prognosis. We performed targeted deep sequencing on PTs to identify the associations between genetic alterations and clinical prognosis. METHODS: We performed targeted deep sequencing to evaluate the genetic characteristics of PTs and analyzed the relationships between clinical and genetic characteristics...
February 2018: Translational Oncology
https://www.readbyqxmd.com/read/29132830/characterizing-recurrent-and-lethal-small-renal-masses-in-clear-cell-renal-cell-carcinoma-using-recurrent-somatic-mutations
#20
Brandon J Manley, Ed Reznik, Mazyar Ghanaat, Mahyar Kashan, Maria F Becerra, Jozefina Casuscelli, Daniel Tennenbaum, Almedina Redzematovic, Maria I Carlo, Yusuke Sato, Maria Arcila, Martin H Voss, Darren R Feldman, Robert J Motzer, Paul Russo, Jonathan Coleman, James J Hsieh, Ari A Hakimi
INTRODUCTION: Small renal masses (SRMs) with evidence of clear cell renal cell carcinoma (ccRCC) are understudied. Current algorithms for the management of SRMs include surgical resection, ablation, and active surveillance. We sought to identify genomic biomarkers that could potentially refine the management of ccRCC in SRMs, especially in patients being evaluated for active surveillance. METHODS: We identified patients who had SRMs (4cm or less) at time of surgery, had sequencing performed on their primary tumor and had a diagnosis of ccRCC...
November 10, 2017: Urologic Oncology
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