keyword
MENU ▼
Read by QxMD icon Read
search

Blimp1

keyword
https://www.readbyqxmd.com/read/29669249/the-transcription-factor-runx3-establishes-chromatin-accessibility-of-cis-regulatory-landscapes-that-drive-memory-cytotoxic-t-lymphocyte-formation
#1
Dapeng Wang, Huitian Diao, Adam J Getzler, Walter Rogal, Megan A Frederick, Justin Milner, Bingfei Yu, Shane Crotty, Ananda W Goldrath, Matthew E Pipkin
T cell receptor (TCR) stimulation of naive CD8+ T cells initiates reprogramming of cis-regulatory landscapes that specify effector and memory cytotoxic T lymphocyte (CTL) differentiation. We mapped regions of hyper-accessible chromatin in naive cells during TCR stimulation and discovered that the transcription factor (TF) Runx3 promoted accessibility to memory CTL-specific cis-regulatory regions before the first cell division and was essential for memory CTL differentiation. Runx3 was specifically required for accessibility to regions highly enriched with IRF, bZIP and Prdm1-like TF motifs, upregulation of TFs Irf4 and Blimp1, and activation of fundamental CTL attributes in early effector and memory precursor cells...
April 17, 2018: Immunity
https://www.readbyqxmd.com/read/29662618/ectopic-expression-of-transcription-factor-batf3-induces-b-cell-lymphomas-in-a-murine-b-cell-transplantation-model
#2
Christian Weiser, Mina V Petkova, Benjamin Rengstl, Claudia Döring, Dorothee von Laer, Sylvia Hartmann, Ralf Küppers, Martin-Leo Hansmann, Sebastian Newrzela
The mechanisms involved in malignant transformation of mature B and T lymphocytes are still poorly understood. In a previous study, we compared gene expression profiles of the tumor cells of Hodgkin lymphoma (HL) and anaplastic large cell lymphoma (ALCL) to their normal cellular counterparts and found the basic leucine zipper protein ATF-like 3 (BATF3) to be significantly upregulated in the tumor cells of both entities. To assess the oncogenic potential of BATF3 in lymphomagenesis and to dissect the molecular interactions of BATF3 in lymphoma cells, we retrovirally transduced murine mature T and B cells with a BATF3-encoding viral vector and transplanted each population into Rag1-deficient recipients...
March 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29481611/tgf%C3%AE-signaling-hyperactivation-induced-tumorigenicity-during-the-derivation-of-neural-progenitors-from-mouse-escs
#3
Xianfa Yang, Ran Wang, Xiongjun Wang, Guoqing Cai, Yun Qian, Su Feng, Fangzhi Tan, Kun Chen, Ke Tang, Xingxu Huang, Naihe Jing, Yunbo Qiao
Clinical therapies of pluripotent stem cells (PSCs)-based transplantation have been hindered by frequent development of teratomas or tumors in animal models and clinical patients. Therefore, clarifying the mechanism of carcinogenesis in stem cell therapy is of great importance for reducing the risk of tumorigenicity. Here we differentiate Oct4-GFP mouse embryonic stem cells (mESCs) into neural progenitor cells (NPCs) and find that a minority of Oct4+ cells are continuously sustained at Oct4+ state. These cells can be enriched and proliferated in a standard ESC medium...
February 22, 2018: Journal of Molecular Cell Biology
https://www.readbyqxmd.com/read/29463002/inhibitory-effect-of-purpurogallin-on-osteoclast-differentiation-in-vitro-through-the-downregulation-of-c-fos-and-nfatc1
#4
Kiryeong Kim, Tae Hoon Kim, Hye Jung Ihn, Jung Eun Kim, Je-Yong Choi, Hong-In Shin, Eui Kyun Park
Purpurogallin, a benzotropolone-containing natural compound, has been reported to exhibit numerous biological and pharmacological functions, such as antioxidant, anticancer, and anti-inflammatory effects. In this study, we enzymatically synthesized purpurogallin from pyrogallol and investigated its role in receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclastogenesis. Purpurogallin attenuated the formation of multinucleated tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts from bone marrow macrophages (BMMs) without causing cytotoxicity, and suppressed upregulation of osteoclast-specific markers, including TRAP (Acp5), cathepsin K (Ctsk), and dendritic cell-specific transmembrane protein (Dcstamp)...
February 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29325247/-impact-of-prdm1-gene-inactivation-on-c-myc-regulation-in-diffuse-large-b-cell-lymphoma
#5
X Y Zhang, Z P Ma, W L Cui, X L Pang, R Chen, L Wang, W Zhang, X X Li
Objective: To investigate the role of PRDM1 gene inactivaion in the regulation of C-MYC in diffuse large B-cell lymphoma (DLBCL), and to explore the correlation of its immunophenotype and prognosis. Methods: 100 cases paraffin-embedded DLBCL tissues were collected from January 2009 to December 2015 at the First Affiliated Hospital of Xinjiang Medical University along with 20 cases of reactive proliferative lymph nodes as control. Immunohistochemical methods were used to detect the expression of CD20, CD10, MUM1, Ki-67, bcl-6, PRDM1/Blimp1, C-MYC and PAX5 protein...
January 8, 2018: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/29284783/cd150-and-cd180-are-involved-in-regulation-of-transcription-factors-expression-in-chronic-lymphocytic-leukemia-cells
#6
I Gordiienko, L Shlapatska, V M Kholodniuk, L Kovalevska, T S Ivanivskaya, S P Sidorenko
BACKGROUND: Sequential stages of B-cell development is stringently coordinated by transcription factors (TFs) network that include B-lineage commitment TFs (Ikaros, Runx1/Cbfb, E2A, and FOXO1), B-lineage maintenance TFs (EBF1 and PAX5) and stage specific set of TFs (IRF4, IRF8, BCL6, BLIMP1). Deregulation of TFs expression and activity is often occurs in malignant B cells. The aim of this study was to evaluate TFs expression in chronic lymphocytic leukemia cells taking into consideration CD150 cell surface expression...
December 2017: Experimental Oncology
https://www.readbyqxmd.com/read/29158490/long-lived-unipotent-blimp1-positive-luminal-stem-cells-drive-mammary-gland-organogenesis-throughout-adult-life
#7
Salah Elias, Marc A Morgan, Elizabeth K Bikoff, Elizabeth J Robertson
The hierarchical relationships between various stem and progenitor cell subpopulations driving mammary gland morphogenesis and homoeostasis are poorly understood. Conditional inactivation experiments previously demonstrated that expression of the zinc finger transcriptional repressor Blimp1/PRDM1 is essential for the establishment of epithelial cell polarity and functional maturation of alveolar cells. Here we exploit a Prdm1.CreERT2-LacZ reporter allele for lineage tracing experiments. Blimp1 expression marks a rare subpopulation of unipotent luminal stem cells that initially appear in the embryonic mammary gland at around E17...
November 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/29141218/reciprocal-expression-of-il-35-and-il-10-defines-two-distinct-effector-treg-subsets-that-are-required-for-maintenance-of-immune-tolerance
#8
Xundong Wei, Jianhua Zhang, Qianchong Gu, Man Huang, Wei Zhang, Jie Guo, Xuyu Zhou
Regulatory T cells (Tregs) can exert their functions through multiple suppressive mechanisms; however, it is unclear how Tregs exactly employ these mechanisms. In this study, we found that interleukin-35 (IL-35)-producing Tregs were a distinct effector population from the IL-10-producing subset. We also revealed that these two subsets of effector Tregs have different transcription factor dependency. Terminal differentiation regulator Blimp1 was only critical for IL-10 production, but not for IL-35; Foxp3 was essential for IL-35 but dispensable for IL-10 production...
November 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/29138422/fam19a5-a-brain-specific-chemokine-inhibits-rankl-induced-osteoclast-formation-through-formyl-peptide-receptor-2
#9
Min Young Park, Hyung Sik Kim, Mingyu Lee, Byunghyun Park, Ha Young Lee, Eun Bee Cho, Jae Young Seong, Yoe-Sik Bae
Osteoclasts can be differentiated from bone marrow-derived macrophages (BMDM). They play a key role in bone resorption. Identifying novel molecules that can regulate osteoclastogenesis has been an important issue. In this study, we found that FAM19A5, a neurokine or brain-specific chemokine, strongly stimulated mouse BMDM, resulting in chemotactic migration and inhibition of RANKL-induced osteoclastogenesis. Expression levels of osteoclast-related genes such as RANK, TRAF6, OSCAR, TRAP, Blimp1, c-fos, and NFATc1 were markedly decreased by FAM19A5...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29070123/-effect-of-b-lymphocyte-induced-mature-protein-1-expression-in-bone-marrow-mononuclear-cells-on-prognosis-of-patients-with-multiple-myeloma
#10
Guo-Sheng Liu, Jiao-Ping Wang, Zhi-Hua Chu, Ying-Ying Yu, Wei Zhou
OBJECTIVE: To study the effect of B lymphocyte-induced mature protein-1(Blimp1) expression in bone marrow mononuclear cells on the prognosis of patients with multiple myeloma. METHODS: Forty-eight patients with multiple myeloma from January 2014 to January 2015 were selected. The expression of Blimp1 in the bone marrow of all the patients was measured. According to the median score of Blimp1 expression level, the patients was divided into low expression group (L group, 22 cases) and high expression group (H group, 26 cases)...
October 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28985527/evolutionarily-distinctive-transcriptional-and-signaling-programs-drive-human-germ-cell-lineage-specification-from-pluripotent-stem-cells
#11
Yoji Kojima, Kotaro Sasaki, Shihori Yokobayashi, Yoshitake Sakai, Tomonori Nakamura, Yukihiro Yabuta, Fumio Nakaki, So Nagaoka, Knut Woltjen, Akitsu Hotta, Takuya Yamamoto, Mitinori Saitou
Germline specification underlies human reproduction and evolution, but it has proven difficult to study in humans since it occurs shortly after blastocyst implantation. This process can be modeled with human induced pluripotent stem cells (hiPSCs) by differentiating them into primordial germ cell-like cells (hPGCLCs) through an incipient mesoderm-like cell (iMeLC) state. Here, we elucidate the key transcription factors and their interactions with important signaling pathways in driving hPGCLC differentiation from iPSCs...
October 5, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28981894/principles-for-the-regulation-of-multiple-developmental-pathways-by-a-versatile-transcriptional-factor-blimp1
#12
Tadahiro Mitani, Yukihiro Yabuta, Hiroshi Ohta, Tomonori Nakamura, Chika Yamashiro, Takuya Yamamoto, Mitinori Saitou, Kazuki Kurimoto
Single transcription factors (TFs) regulate multiple developmental pathways, but the underlying mechanisms remain unclear. Here, we quantitatively characterized the genome-wide occupancy profiles of BLIMP1, a key transcriptional regulator for diverse developmental processes, during the development of three germ-layer derivatives (photoreceptor precursors, embryonic intestinal epithelium and plasmablasts) and the germ cell lineage (primordial germ cells). We identified BLIMP1-binding sites shared among multiple developmental processes, and such sites were highly occupied by BLIMP1 with a stringent recognition motif and were located predominantly in promoter proximities...
December 1, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28969006/the-molecular-characterization-of-porcine-egg-precursor-cells
#13
Te-Sha Tsai, Jacqueline Johnson, Yvonne White, Justin C John
Female-factor infertility can be caused by poor oocyte quality and depleted ovarian reserves. Egg precursor cells (EPCs), isolated from the ovarian cortex, have the potential to be used to overcome female infertility. We aimed to define the origins of EPCs by analyzing their gene expression profiles and mtDNA content using a mini-pig model. We characterized FAC-sorted DDX4(+)-derived porcine EPCs by performing RNA-sequencing and determined that they utilize pathways important for cell cycle and proliferation, which supports the existence of adult mitotically active oogonial cells...
September 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28955330/perturbation-of-b-cell-gene-expression-persists-in-hiv-infected-children-despite-effective-antiretroviral-therapy-and-predicts-h1n1-response
#14
Nicola Cotugno, Lesley De Armas, Suresh Pallikkuth, Stefano Rinaldi, Biju Issac, Alberto Cagigi, Paolo Rossi, Paolo Palma, Savita Pahwa
Despite effective antiretroviral therapy (ART), HIV-infected individuals with apparently similar clinical and immunological characteristics can vary in responsiveness to vaccinations. However, molecular mechanisms responsible for such impairment, as well as biomarkers able to predict vaccine responsiveness in HIV-infected children, remain unknown. Following the hypothesis that a B cell qualitative impairment persists in HIV-infected children (HIV) despite effective ART and phenotypic B cell immune reconstitution, the aim of the current study was to investigate B cell gene expression of HIV compared to age-matched healthy controls (HCs) and to determine whether distinct gene expression patterns could predict the ability to respond to influenza vaccine...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28935958/differential-regulation-of-effector-and-regulatory-t-cell-function-by-blimp1
#15
Rashmi Bankoti, Chihiro Ogawa, Truc Nguyen, Lena Emadi, Michael Couse, Soofia Salehi, Xuemo Fan, Deepti Dhall, Yizhou Wang, Jordan Brown, Vincent Funari, Jie Tang, Gislâine A Martins
The transcriptional regulator Blimp1 plays crucial roles in controlling terminal differentiation in several lineages. In T cells, Blimp1 is expressed in both effector (Teff) and regulatory (Treg) cells, and mice with T cell-specific deletion of Blimp1 (Blimp1CKO mice) spontaneously develop severe intestinal inflammation, indicating a crucial role for Blimp1 in T cell homeostasis regulation. Blimp1 has been shown to function as a direct activator of the Il10 gene and although its requirement for IL10 expression has been demonstrated in both Treg and Teff cells under inflammatory conditions, the intrinsic requirement of Blimp1 for homeostatic maintenance of these T cell subsets had not been investigated...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28878266/transglutaminase-2-regulates-osteoclast-differentiation-via-a-blimp1-dependent-pathway
#16
Woo-Shin Kim, Haemin Kim, Eui Man Jeong, Hyung Joon Kim, Zang Hee Lee, In-Gyu Kim, Hong-Hee Kim
Transglutaminase 2 (TG2) performs multiple reactions, including transamidation, and also plays a role in signal transduction as a GTP-binding protein. In this study, we reveal that TG2 controls osteoclast differentiation and bone homeostasis in mice. Osteoclasts specifically expressed the TG2 isoform among eight TG family members. Suppression in TG2 expression with siRNA led to increased osteoclast formation from primary mouse precursor cells in response to receptor activator of nuclear factor kappaB ligand (RANKL)...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28875978/il4-and-il21-cooperate-to-induce-the-high-bcl6-protein-level-required-for-germinal-center-formation
#17
Stéphane Chevrier, Tobias Kratina, Dianne Emslie, David M Tarlinton, Lynn M Corcoran
Bcl6 (B-cell lymphoma 6) is a transcriptional repressor and critical mediator of the germinal center reaction during a T-cell-dependent antibody response, where it enables somatic hypermutation of immunoglobulin genes and inhibits terminal differentiation via repression of Blimp1. It can also contribute to the development of diffuse large B-cell lymphoma when expressed inappropriately. Bcl6 regulation is mediated both at the transcriptional and post-transcriptional levels, and in particular a strong signal through the B-cell receptor causes rapid proteasomal degradation of Bcl6...
November 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28851699/an-aberrant-notch2-bcr-signaling-axis-in-b-cells-from-patients-with-chronic-gvhd
#18
Jonathan C Poe, Wei Jia, Hsuan Su, Sarah Anand, Jeremy J Rose, Prasanthi V Tata, Amy N Suthers, Corbin D Jones, Pei Fen Kuan, Benjamin G Vincent, Jonathan S Serody, Mitchell E Horwitz, Vincent T Ho, Steven Z Pavletic, Frances T Hakim, Kouros Owzar, Dadong Zhang, Bruce R Blazar, Christian W Siebel, Nelson J Chao, Ivan Maillard, Stefanie Sarantopoulos
B-cell receptor (BCR)-activated B cells contribute to pathogenesis in chronic graft-versus-host disease (cGVHD), a condition manifested by both B-cell autoreactivity and immune deficiency. We hypothesized that constitutive BCR activation precluded functional B-cell maturation in cGVHD. To address this, we examined BCR-NOTCH2 synergy because NOTCH has been shown to increase BCR responsiveness in normal mouse B cells. We conducted ex vivo activation and signaling assays of 30 primary samples from hematopoietic stem cell transplantation patients with and without cGVHD...
November 9, 2017: Blood
https://www.readbyqxmd.com/read/28835384/ezh2-inhibition-by-tazemetostat-results-in-altered-dependency-on-b-cell-activation-signaling-in-dlbcl
#19
Dorothy Brach, Danielle Johnston-Blackwell, Allison Drew, Trupti Lingaraj, Vinny Motwani, Natalie M Warholic, Igor Feldman, Christopher Plescia, Jesse J Smith, Robert A Copeland, Heike Keilhack, Elayne Chan-Penebre, Sarah K Knutson, Scott A Ribich, Alejandra Raimondi, Michael J Thomenius
The EZH2 small-molecule inhibitor tazemetostat (EPZ-6438) is currently being evaluated in phase II clinical trials for the treatment of non-Hodgkin lymphoma (NHL). We have previously shown that EZH2 inhibitors display an antiproliferative effect in multiple preclinical models of NHL, and that models bearing gain-of-function mutations in EZH2 were consistently more sensitive to EZH2 inhibition than lymphomas with wild-type (WT) EZH2 Here, we demonstrate that cell lines bearing EZH2 mutations show a cytotoxic response, while cell lines with WT-EZH2 show a cytostatic response and only tumor growth inhibition without regression in a xenograft model...
November 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28833081/transcriptional-repressor-blimp1-regulates-follicular-regulatory-t-cell-homeostasis-and-function
#20
Guang Yang, Xiaosu Yang, Junmei Zhang, Guancheng Li, Dandan Zheng, Anjiao Peng, Jue Hu, Liqun Xu, Baifeng Yang, Huan Yang, Wenbin Zhou, Erdem Tuzun, Jing Li
The B-lymphocyte-induced maturation protein 1 (Blimp1) regulates T-cell homeostasis and function. Loss of Blimp1 could double the proportion of follicular regulatory T (Tfr) cells. However, the effects that Blimp1 may have on the function of Tfr cells remain unknown. Here we document the function for Blimp1 in Tfr cells in vitro and in vivo. Data presented in this study demonstrate that Tfr cells indirectly inhibit the activation and differentiation of B cells by negatively regulating follicular helper T cells, so lowering the secretion of antibody...
January 2018: Immunology
keyword
keyword
89654
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"