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https://www.readbyqxmd.com/read/28669733/bcl11b-is-frequently-downregulated-in-htlv-1-infected-t-cells-through-tax-mediated-proteasomal-degradation
#1
Happy Kurnia Permatasari, Shingo Nakahata, Tomonaga Ichikawa, Kazuhiro Morishita
Human T-cell leukemia virus type 1 (HTLV-1) is a causative agent of adult T-cell leukemia-lymphoma (ATLL). The HTLV-1-encoded protein Tax plays important roles in the proliferation of HTLV-1-infected T-cells by affecting cellular proteins. In this study, we showed that Tax transcriptionally and post-transcriptionally downregulates the expression of the tumor suppressor gene B-cell leukemia/lymphoma 11B (BCL11B), which encodes a lymphoid-related transcription factor. BCL11B expression was downregulated in HTLV-1-infected T-cell lines at the mRNA and protein levels, and forced expression of BCL11B suppressed the proliferation of these cells...
June 29, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28652615/gga-mir-219b-targeting-bcl11b-suppresses-proliferation-migration-and-invasion-of-marek-s-disease-tumor-cell-msb1
#2
Chunfang Zhao, Xin Li, Bo Han, Zhen You, Lujiang Qu, Changjun Liu, Jiuzhou Song, Ling Lian, Ning Yang
Marek's disease (MD), caused by Marek's disease virus (MDV), is a lymphotropic neoplastic disease. Previous miRNAome analysis showed gga-miR-219b was significantly downregulated in MDV-induced lymphoma, and one of its potential target genes, B-cell chronic lymphocytic /lymphoma 11B (BCL11B) was predicted. In this study, we further investigated the function of gga-miR-219b, and the gain/loss of function assay showed gga-miR-219b inhibited cell migration and reduced cell proliferation by promoting apoptosis not by cell cycle arrest...
June 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28584128/bcl11b-and-combinatorial-resolution-of-cell-fate-in-the-t-cell-gene-regulatory-network
#3
William J R Longabaugh, Weihua Zeng, Jingli A Zhang, Hiroyuki Hosokawa, Camden S Jansen, Long Li, Maile Romero-Wolf, Pentao Liu, Hao Yuan Kueh, Ali Mortazavi, Ellen V Rothenberg
T-cell development from hematopoietic progenitors depends on multiple transcription factors, mobilized and modulated by intrathymic Notch signaling. Key aspects of T-cell specification network architecture have been illuminated through recent reports defining roles of transcription factors PU.1, GATA-3, and E2A, their interactions with Notch signaling, and roles of Runx1, TCF-1, and Hes1, providing bases for a comprehensively updated model of the T-cell specification gene regulatory network presented herein...
June 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28571672/targeting-cd147-for-t-to-nk-lineage-reprogramming-and-tumor-therapy
#4
Jie-Jie Geng, Juan Tang, Xiang-Min Yang, Ruo Chen, Yang Zhang, Kui Zhang, Jin-Lin Miao, Zhi-Nan Chen, Ping Zhu
CD147 is highly expressed on the surface of numerous tumor cells to promote invasion and metastasis. Targeting these cells with CD147-specific antibodies has been validated as an effective approach for lung and liver cancer therapy. In the immune system, CD147 is recognized as a co-stimulatory receptor and impacts the outcome of thymic selection. Using T cell-specific deletion, we showed here that in thymus CD147 is indispensable for the stable αβ T cell lineage commitment: loss of CD147 biases both multipotent DN (double negative) and fully committed DP (double positive) cells into innate NK-like lineages...
June 2017: EBioMedicine
https://www.readbyqxmd.com/read/28424591/bcl11b-a-critical-neurodevelopmental-transcription-factor-roles-in-health-and-disease
#5
REVIEW
Matthew J Lennon, Simon P Jones, Michael D Lovelace, Gilles J Guillemin, Bruce J Brew
B cell leukemia 11b (Bcl11b) is a zinc finger protein transcription factor with a multiplicity of functions. It works as both a genetic suppressor and activator, acting directly, attaching to promoter regions, as well as indirectly, attaching to promoter-bound transcription factors. Bcl11b is a fundamental transcription factor in fetal development, with important roles for the differentiation and development of various neuronal subtypes in the central nervous system (CNS). It has been used as a specific marker of layer V subcerebral projection neurons as well as striatal interneurons...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28288848/bcl11b-mediated-epigenetic-repression-is-a-crucial-target-for-histone-deacetylase-inhibitors-in-cutaneous-t-cell-lymphoma
#6
Wenjing Fu, Shengguo Yi, Lei Qiu, Jingru Sun, Ping Tu, Yang Wang
The treatment options for advanced cutaneous T-cell lymphoma (CTCL) are limited because of its unclear pathogenesis. Histone deacetylase (HDAC) inhibitors (HDACis) are recently developed therapeutics approved for refractory CTCL. However, the response rate is relatively low and unpredictable. Previously, we discovered that BCL11B, a key T-cell development regulator, was aberrantly overexpressed in mycosis fungoides, the most common CTCL, as compared with benign inflammatory skin. In this study, we identified a positive correlation between BCL11B expression and sensitivity to HDACi in CTCL lines...
July 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28259684/ablation-of-ctip2-bcl11b-in-adult-epidermis-enhances-tpa-uv-induced-proliferation-and%C3%A2-increases-susceptibility-to-dmba-tpa-induced-epidermal-carcinogenesis
#7
Shreya Bhattacharya, Shan Li, Heather Wheeler, Rong Wang, Christiane V Lohr, Mark Leid, Gitali Ganguli-Indra, Arup K Indra
No abstract text is available yet for this article.
July 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28110422/interventions-for-neurocognitive-dysfunction
#8
REVIEW
Jacqueline Ellero, Michal Lubomski, Bruce Brew
PURPOSE OF REVIEW: This study aimed to evaluate current barriers to HIV cure strategies and interventions for neurocognitive dysfunction with a particular focus on recent advancements over the last 3 years. RECENT FINDINGS: Optimal anti-retroviral therapy (ART) poses challenges to minimise neurotoxicity, whilst ensuring blood-brain barrier penetration and minimising the risk of cerebrovascular disease. CSF biomarkers, BCL11B and neurofilament light chain may be implicated with a neuroinflammatory cascade leading to cognitive impairment...
February 2017: Current HIV/AIDS Reports
https://www.readbyqxmd.com/read/28067590/bcl11b-gene-heterozygosity-causes-weight-loss-accompanied-by-increased-energy-consumption-but-not-defective-adipogenesis-in-mice
#9
Jun Inoue, Yusuke Ihara, Daisuke Tsukamoto, Keisuke Yasumoto, Tsutomu Hashidume, Kenya Kamimura, Shigeki Hirano, Makoto Shimizu, Ryo Kominami, Ryuichiro Sato
BCL11B is a zinc finger-type transcription factor that regulates the development of the white adipose tissue (WAT), skin, central nervous system, and immune system. BCL11B is required for proper adipocyte differentiation, and BCL11B-/- embryos at E19.5 have very low amounts of the subcutaneous WAT. Here, we demonstrated that BCL11B+/- mice have lower body weight than BCL11B+/+ mice, whereas the expression of adipogenic marker genes in the WAT was comparable between BCL11B+/+ and BCL11B+/- mice. Histological analysis indicated that BCL11B+/- mice fed a high-fat diet have much smaller white adipocytes and lipid droplets in the WAT and liver, respectively...
May 2017: Bioscience, Biotechnology, and Biochemistry
https://www.readbyqxmd.com/read/28041896/a-quiescent-bcl11b-high-stem-cell-population-is-required-for-maintenance-of-the-mammary-gland
#10
Shang Cai, Tomer Kalisky, Debashis Sahoo, Piero Dalerba, Weiguo Feng, Yuan Lin, Dalong Qian, Angela Kong, Jeffrey Yu, Flora Wang, Elizabeth Y Chen, Ferenc A Scheeren, Angera H Kuo, Shaheen S Sikandar, Shigeo Hisamori, Linda J van Weele, Diane Heiser, Sopheak Sim, Jessica Lam, Stephen Quake, Michael F Clarke
Stem cells in many tissues sustain themselves by entering a quiescent state to avoid genomic insults and to prevent exhaustion caused by excessive proliferation. In the mammary gland, the identity and characteristics of quiescent epithelial stem cells are not clear. Here, we identify a quiescent mammary epithelial cell population expressing high levels of Bcl11b and located at the interface between luminal and basal cells. Bcl11b(high) cells are enriched for cells that can regenerate mammary glands in secondary transplants...
February 2, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/27987403/the-effect-of-ethephon-on-immune-system-in-male-offspring-of-mice
#11
Siqi Wang, Haifeng Jin, Qiuqiong Tang, Jun Fu, Zeming Ren, Cike Peng, Lanqin Shang, Weidong Hao, Xuetao Wei
Ethephon can liberate ethylene which could interfere the plant growth process. The aim of the present study was to determine the effect of ethephon on developing immune system of male offspring. Ethephon could enhance NK cell activity in male mice. For 4-week-old male mice, lymphocytes of peripheral blood increased while the hemolytic plaque number decreased. Delayed type hypersensitivity(DTH) was inhibited in all groups. The expression of protein Bcl11b and p-p38 in thymus of treatment groups were lower than control group...
January 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/27959755/multisystem-anomalies-in-severe-combined-immunodeficiency-with-mutant-bcl11b
#12
Divya Punwani, Yong Zhang, Jason Yu, Morton J Cowan, Sadhna Rana, Antonia Kwan, Aashish N Adhikari, Carlos O Lizama, Bryce A Mendelsohn, Shawn P Fahl, Ajithavalli Chellappan, Rajgopal Srinivasan, Steven E Brenner, David L Wiest, Jennifer M Puck
BACKGROUND: Severe combined immunodeficiency (SCID) is characterized by arrested T-lymphocyte production and by B-lymphocyte dysfunction, which result in life-threatening infections. Early diagnosis of SCID through population-based screening of newborns can aid clinical management and help improve outcomes; it also permits the identification of previously unknown factors that are essential for lymphocyte development in humans. METHODS: SCID was detected in a newborn before the onset of infections by means of screening of T-cell-receptor excision circles, a biomarker for thymic output...
December 1, 2016: New England Journal of Medicine
https://www.readbyqxmd.com/read/27959403/bcl11b-regulates-enamel-matrix-protein-expression-and-dental-epithelial-cell-differentiation-during-rat-tooth-development
#13
Ziyue Li, Guoqing Chen, Yaling Yang, Weihua Guo, Weidong Tian
Amelogenesis, beginning with thickened epithelial aggregation and ending with highly mineralized enamel formation, is a process mediated by a complex signaling network that involves several molecules, including growth and transcription factors. During early tooth development, the transcription factor B‑cell CLL/lymphoma 11B (Bcl11b) participates in dental epithelial cell proliferation and differentiation. However, whether it affects the postnatal regulation of enamel matrix protein expression and ameloblast differentiation remains unclear...
January 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27790219/transcription-factor-bcl11b-controls-effector-and-memory-cd8-t-cell-fate-decision-and-function-during-poxvirus-infection
#14
Georges Abboud, Jessica Stanfield, Vikas Tahiliani, Pritesh Desai, Tarun E Hutchinson, Kyle J Lorentsen, Jonathan J Cho, Dorina Avram, Shahram Salek-Ardakani
CD8(+) T cells play an important role in host resistance to many viral infections, but the underlying transcriptional mechanisms governing their differentiation and functionality remain poorly defined. By using a highly virulent systemic and respiratory poxvirus infection in mice, we show that the transcription factor Bcl11b provides a dual trigger that sustains the clonal expansion of virus-specific effector CD8(+) T cells, while simultaneously suppressing the expression of surface markers associated with short-lived effector cell (SLEC) differentiation...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27762073/cognitive-analysis-of-schizophrenia-risk-genes-that-function-as-epigenetic-regulators-of-gene-expression
#15
Laura Whitton, Donna Cosgrove, Christopher Clarkson, Denise Harold, Kimberley Kendall, Alex Richards, Kiran Mantripragada, Michael J Owen, Michael C O'Donovan, James Walters, Annette Hartmann, Betina Konte, Dan Rujescu, Michael Gill, Aiden Corvin, Stephen Rea, Gary Donohoe, Derek W Morris
Epigenetic mechanisms are an important heritable and dynamic means of regulating various genomic functions, including gene expression, to orchestrate brain development, adult neurogenesis, and synaptic plasticity. These processes when perturbed are thought to contribute to schizophrenia pathophysiology. A core feature of schizophrenia is cognitive dysfunction. For genetic disorders where cognitive impairment is more severe such as intellectual disability, there are a disproportionally high number of genes involved in the epigenetic regulation of gene transcription...
December 2016: American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics
https://www.readbyqxmd.com/read/27749818/single-cell-rna-seq-identifies-a-pd-1-hi-ilc-progenitor-and-defines-its-development-pathway
#16
Yong Yu, Jason C H Tsang, Cui Wang, Simon Clare, Juexuan Wang, Xi Chen, Cordelia Brandt, Leanne Kane, Lia S Campos, Liming Lu, Gabrielle T Belz, Andrew N J McKenzie, Sarah A Teichmann, Gordon Dougan, Pentao Liu
Innate lymphoid cells (ILCs) functionally resemble T lymphocytes in cytotoxicity and cytokine production but lack antigen-specific receptors, and they are important regulators of immune responses and tissue homeostasis. ILCs are generated from common lymphoid progenitors, which are subsequently committed to innate lymphoid lineages in the α-lymphoid progenitor, early innate lymphoid progenitor, common helper innate lymphoid progenitor and innate lymphoid cell progenitor compartments. ILCs consist of conventional natural killer cells and helper-like cells (ILC1, ILC2 and ILC3)...
November 3, 2016: Nature
https://www.readbyqxmd.com/read/27725726/hic1-controls-cellular-and-hiv-1-gene-transcription-via-interactions-with-ctip2-and-hmga1
#17
Valentin Le Douce, Faezeh Forouzanfar, Sebastian Eilebrecht, Benoit Van Driessche, Amina Ait-Ammar, Roxane Verdikt, Yoshihito Kurashige, Céline Marban, Virginie Gautier, Ermanno Candolfi, Arndt G Benecke, Carine Van Lint, Olivier Rohr, Christian Schwartz
Among many cellular transcriptional regulators, Bcl11b/CTIP2 and HGMA1 have been described to control the establishment and the persistence of HIV-1 latency in microglial cells, the main viral reservoir in the brain. In this present work, we identify and characterize a transcription factor i.e. HIC1, which physically interacts with both Bcl11b/CTIP2 and HMGA1 to co-regulate specific subsets of cellular genes and the viral HIV-1 gene. Our results suggest that HIC1 represses Tat dependent HIV-1 transcription...
October 11, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27586877/identification-of-bcl11b-as-a-regulator-of-adipogenesis
#18
Jun Inoue, Yusuke Ihara, Daisuke Tsukamoto, Keisuke Yasumoto, Tsutomu Hashidume, Kenya Kamimura, Yuji Nakai, Shigeki Hirano, Makoto Shimizu, Ryo Kominami, Ryuichiro Sato
The differentiation of preadipocytes into adipocytes is controlled by several transcription factors, including peroxisome proliferator-activated receptor γ (PPARγ) and CCAAT/enhancer-binding protein α (C/EBPα), which are known as master regulators of adipogenesis. BCL11B is a zinc finger-type transcription factor that regulates the development of the skin and central nervous and immune systems. Here, we found that BCL11B was expressed in the white adipose tissue (WAT), particularly the subcutaneous WAT and that BCL11B(-/-) mice had a reduced amount of subcutaneous WAT...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27551921/irreversibility-of-t-cell-specification-insights-from-computational-modelling-of-a-minimal-network-architecture
#19
Erica Manesso, Hao Yuan Kueh, George Freedman, Ellen V Rothenberg, Carsten Peterson
BACKGROUND/OBJECTIVES: A cascade of gene activations under the control of Notch signalling is required during T-cell specification, when T-cell precursors gradually lose the potential to undertake other fates and become fully committed to the T-cell lineage. We elucidate how the gene/protein dynamics for a core transcriptional module governs this important process by computational means. METHODS: We first assembled existing knowledge about transcription factors known to be important for T-cell specification to form a minimal core module consisting of TCF-1, GATA-3, BCL11B, and PU...
2016: PloS One
https://www.readbyqxmd.com/read/27484700/mapping-epigenetic-changes-to-the-host-cell-genome-induced-by-burkholderia-pseudomallei-reveals-pathogen-specific-and-pathogen-generic-signatures-of-infection
#20
Deniz Cizmeci, Emma L Dempster, Olivia L Champion, Sariqa Wagley, Ozgur E Akman, Joann L Prior, Orkun S Soyer, Jonathan Mill, Richard W Titball
The potential for epigenetic changes in host cells following microbial infection has been widely suggested, but few examples have been reported. We assessed genome-wide patterns of DNA methylation in human macrophage-like U937 cells following infection with Burkholderia pseudomallei, an intracellular bacterial pathogen and the causative agent of human melioidosis. Our analyses revealed significant changes in host cell DNA methylation, at multiple CpG sites in the host cell genome, following infection. Infection induced differentially methylated probes (iDMPs) showing the greatest changes in DNA methylation were found to be in the vicinity of genes involved in inflammatory responses, intracellular signalling, apoptosis and pathogen-induced signalling...
2016: Scientific Reports
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