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https://www.readbyqxmd.com/read/29395576/reduced-hmgb1-suppresses-poly-i-c-induced-inflammation-in-keratinocytes
#1
Hideki Mori, Masamoto Murakami, Teruko Tsuda, Kenji Kameda, Ryo Utsunomiya, Kana Masuda, Ken Shiraishi, Xiuju Dai, Mikiko Tohyama, Hiroki Nakaoka, Koji Sayama
BACKGROUND: High mobility group box 1 (HMGB1) is a nuclear protein that stabilizes DNA and facilitates gene transcription. Additionally, cell stress or death induces the release of HMGB1 outside the cell membrane, where HMGB1 functions as an alarmin, causing an inflammatory response in combination with other cytokines, damage-associated molecular patterns (DAMPs), and pathogen-associated molecular patterns (PAMPs). OBJECTIVE: To evaluate the effect of reduced-HMGB1 (previously termed chemoattractive-HMGB1) on polyinosine-polycytidylic acid [poly(I:C)]-induced inflammation in normal human keratinocytes (NHKs)...
January 29, 2018: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29373757/mutations-involving-the-sry-related-gene-sox8-are-associated-with-a-spectrum-of-human-reproductive-anomalies
#2
Marie-France Portnoi, Marie-Charlotte Dumargne, Sandra Rojo, Selma F Witchel, Andrew J Duncan, Caroline Eozenou, Joelle Bignon-Topalovic, Sventlana A Yatsenko, Aleksandar Rajkovic, Miguel Reyes-Mugica, Kristian Almstrup, Lelia Fusee, Yogesh Srivastava, Sandra Chantot-Bastaraud, Capucine Hyon, Christine Louis-Sylvestre, Pierre Validire, Caroline de Malleray Pichard, Celia Ravel, Sophie Christin-Maitre, Raja Brauner, Raffaella Rossetti, Luca Persani, Eduardo H Charreau, Liliana Dain, Violeta A Chiauzzi, Inas Mazen, Hassan Rouba, Caroline Schluth-Bolard, Stuart MacGowan, W H Irwin McLean, Etienne Patin, Ewa Rajpert-De Meyts, Ralf Jauch, John C Achermann, Jean-Pierre Siffroi, Ken McElreavey, Anu Bashamboo
SOX8 is an HMG-box transcription factor closely related to SRY and SOX9. Deletion of the gene encoding Sox8 in mice causes reproductive dysfunction but the role of SOX8 in humans is unknown. Here, we show that SOX8 is expressed in the somatic cells of the early developing gonad in the human and influences human sex-determination. We identified two individuals with 46,XY disorders/differences in sex development (DSD) and chromosomal rearrangements encompassing the SOX8 locus and a third individual with 46,XY DSD and a missense mutation in the HMG-box of SOX8...
January 24, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29353823/increased-expression-of-y-box-binding-protein-1-in-hind-limb-muscles-during-regeneration-from-ischemic-injury-in-mice
#3
Megumi Fuke, Makoto Narita, Yuko Wada, Tatsuichiro Seto, Kenji Okada, Jun Nakayama, Hiroto Izumi, Ken-Ichi Ito
Critical limb ischemia (CLI) is the most severe complication of peripheral arterial disease (PAD). Understanding the molecular mechanisms underlying tissue repair after CLI is necessary for preventing PAD progression. Y-box binding protein-1 (YB-1) regulates the expression of many genes in response to environmental stresses. We aimed to determine whether YB-1 is involved in ischemic muscle regeneration. A mouse ischemic hind-limb model was generated; namely, the femoral, saphenous, and popliteal arteries in the left hind limb were ligated...
2018: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29340063/a-molecular-signature-of-dormancy-in-cd34-cd38-acute-myeloid-leukaemia-cells
#4
Mazin Gh Al-Asadi, Grace Brindle, Marcos Castellanos, Sean T May, Ken I Mills, Nigel H Russell, Claire H Seedhouse, Monica Pallis
Dormant leukaemia initiating cells in the bone marrow niche are a crucial therapeutic target for total eradication of acute myeloid leukaemia. To study this cellular subset we created and validated an in vitro model employing the cell line TF-1a, treated with Transforming Growth Factor β1 (TGFβ1) and a mammalian target of rapamycin inhibitor. The treated cells showed decreases in total RNA, Ki-67 and CD71, increased aldehyde dehydrogenase activity, forkhead box 03A (FOX03A) nuclear translocation and growth inhibition, with no evidence of apoptosis or differentiation...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29248425/ameliorative-effect-of-panaxynol-on-the-reduction-in-high-molecular-weight-adiponectin-secretion-from-3t3-l1-adipocytes-treated-with-palmitic-acids
#5
Michiyo Takagi, Kazunori Kimura, Ken-Ichi Nakashima, Makoto Inoue
Reduced plasma levels of the high-molecular weight (HMW) form of adiponectin, rather than total adiponectin levels, have been shown to be closely associated with various metabolic diseases including insulin resistance, type 2 diabetes, and cardiovascular disease. Therefore, we sought to explore active, naturally occurring compounds that promote the recovery of HMW adiponectin secretion suppressed by palmitic acid in our model. A total of 90 crude drug extracts were screened for the ability to augment HMW adiponectin secretion from 3T3-L1 adipocytes treated with palmitic acid...
December 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29215828/from-the-operating-room-to-the-streets-a-comprehensive-review-of-the-most-versatile-item-in-your-drug-box
#6
Scott D Hax, Ken Davis, Ben Stone, Bryan Bledsoe, Ryan Hodnick
No abstract text is available yet for this article.
February 2017: JEMS: a Journal of Emergency Medical Services
https://www.readbyqxmd.com/read/29030390/apc-c-fzr-1-controls-sas-5-levels-to-regulate-centrosome-duplication-in-caenorhabditis-elegans
#7
Jeffrey C Medley, Lauren E DeMeyer, Megan M Kabara, Mi Hye Song
As the primary microtubule-organizing center, centrosomes play a key role in establishing mitotic bipolar spindles that secure correct transmission of genomic content. For the fidelity of cell division, centrosome number must be strictly controlled by duplicating only once per cell cycle. Proper levels of centrosome proteins are shown to be critical for normal centrosome number and function. Overexpressing core centrosome factors leads to extra centrosomes, while depleting these factors results in centrosome duplication failure...
October 13, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28971975/tbx4-is-involved-in-the-super-enhancer-driven-transcriptional-programs-underlying-features-specific-to-lung-fibroblasts
#8
Masafumi Horie, Naoya Miyashita, Yu Mikami, Satoshi Noguchi, Yasuhiro Yamauchi, Maho Suzukawa, Takeshi Fukami, Ken Ohta, Yoshihide Asano, Shinichi Sato, Yoko Yamaguchi, Mitsuhiro Ohshima, Hiroshi I Suzuki, Akira Saito, Takahide Nagase
Lung fibroblasts participate in the pathogenesis of respiratory diseases, including lung cancer and pulmonary fibrosis. Although fibroblasts are ubiquitous constituents of various organs, their cellular diversity among different organs has been poorly characterized. Here, we aimed to investigate the distinct gene signature of lung fibroblasts that represents its pulmonary origin, and the underlying gene regulatory networks. Promoter-level differential expression analysis by cap analysis of gene expression (CAGE) sequencing revealed distinct gene expression patterns of fibroblasts derived from different anatomical sites and identified 88 coding genes with higher expression in lung fibroblasts relative to other fibroblasts...
September 28, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28741799/multicenter-study-for-brain-body-hypothermia-for-hypoxic-ischemic-encephalopathy-changes-in-hmgb-1
#9
Toshihiko Nakamura, Hideomi Asanuma, Satoshi Kusuda, Ken Imai, Shigeharu Hosono, Ryota Kato, Satoshi Suzuki, Kyoko Yokoi, Minoru Kokubo, Shingo Yamada, Takashi Kamohara
BACKGROUND: We measured changes in the blood level of high-mobility group box-1 (HMGB-1) at 24 h intervals in neonates treated with brain/body hypothermia (body hypothermia therapy: BHT) for hypoxic-ischemic encephalopathy (HIE), to evaluate the usefulness of HMGB-1 level for determining outcomes. METHODS: We studied 15 neonates with HIE who underwent BHT (BHT (+) group) and six neonates with HIE who did not (BHT (-) group). We recorded HMGB-1 changes at 24 h intervals, creatinine phosphokinase, and the resistance index of the anterior cerebral artery...
October 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28693181/distinct-dna-methylation-alterations-are-associated-with-cribriform-architecture-and-intraductal-carcinoma-in-gleason-pattern-4-prostate-tumors
#10
Ekaterina Olkhov-Mitsel, Farshid Siadat, Ken Kron, Liyang Liu, Andrea J Savio, John Trachtenberg, Neil Fleshner, Theodorus van der Kwast, Bharati Bapat
The aim of the present study was to explore DNA methylation aberrations in association with cribriform architecture and intraductal carcinoma (IDC) of the prostate, as there is robust evidence that these morphological features are associated with aggressive disease and have significant clinical implications. Herein, the associations of a panel of seven known prognostic DNA methylation biomarkers with cribriform and IDC features were examined in a series of 91 Gleason pattern (GP) 4 tumors derived from Gleason score 7 radical prostatectomies...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28667325/xbp1-foxo1-interaction-regulates-er-stress-induced-autophagy-in-auditory-cells
#11
Akihiro Kishino, Ken Hayashi, Chiaki Hidai, Takeshi Masuda, Yasuyuki Nomura, Takeshi Oshima
The purpose of this study was to clarify the relationship among X-box-binding protein 1 unspliced, spliced (XBP1u, s), Forkhead box O1 (FoxO1) and autophagy in the auditory cells under endoplasmic reticulum (ER) stress. In addition, the relationship between ER stress that causes unfolded protein response (UPR) and autophagy was also investigated. The present study reported ER stress induction by tunicamycin treatment that resulted in IRE1α-mediated XBP1 mRNA splicing and autophagy. XBP1 mRNA splicing and FoxO1 were found to be involved in ER stress-induced autophagy...
June 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28649578/anti-high-mobility-group-box-1-antibody-ameliorates-albuminuria-in-mrl-lpr-lupus-prone-mice
#12
Haruki Watanabe, Katsue S Watanabe, Keyue Liu, Sumie Hiramatsu, Sonia Zeggar, Eri Katsuyama, Noriko Tatebe, Akiya Akahoshi, Fumiaki Takenaka, Takahisa Hanada, Masaru Akehi, Takanori Sasaki, Ken-Ei Sada, Eiji Matsuura, Masahiro Nishibori, Jun Wada
We evaluated the efficacy of a neutralizing anti-high mobility group box 1 (HMGB1) monoclonal antibody in MRL/lpr lupus-prone mice. The anti-HMGB1 monoclonal antibody (5 mg/kg weight) or class-matched control immunoglobulin G2a (IgG2a) was administered intravenously twice a week for 4-15 weeks. Urine albumin was monitored, and histological evaluation of the kidneys was conducted at 16 weeks. Lymphadenopathies were evaluated by 1-(2'-deoxy-2'-[(18)F]fluoro-β-D-arabinofuranosyl)cytosine ([(18)F]FAC) positron emission tomography/computed tomography (PET/CT) at 12 weeks...
September 15, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28438897/downregulation-of-mir-200a-3p-targeting-ctbp2-complex-is-involved-in-the-hypoproduction-of-il-2-in-systemic-lupus-erythematosus-derived-t-cells
#13
Eri Katsuyama, Minglu Yan, Katsue Sunahori Watanabe, Syun Matsushima, Yuriko Yamamura, Sumie Hiramatsu, Keiji Ohashi, Haruki Watanabe, Takayuki Katsuyama, Sonia Zeggar, Nobuya Yoshida, Vaishali R Moulton, George C Tsokos, Ken-Ei Sada, Jun Wada
Systemic lupus erythematosus (SLE) damages multiple organs by producing various autoantibodies. In this study, we report that decreased microRNA (miR)-200a-3p causes IL-2 hypoproduction through zinc finger E-box binding homeobox (ZEB)1 and C-terminal binding protein 2 (CtBP2) in a lupus-prone mouse. First, we performed RNA sequencing to identify candidate microRNAs and mRNAs involved in the pathogenesis of SLE. We found that miR-200a-3p was significantly downregulated, whereas its putative targets, ZEB2 and CtBP2, were upregulated in CD4(+) T cells from MRL/lpr-Tnfrsf6(lpr) mice compared with C57BL/6J mice...
June 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28406939/role-of-neurod1-on-the-negative-regulation-of-pomc-expression-by-glucocorticoid
#14
Rehana Parvin, Akiko Saito-Hakoda, Hiroki Shimada, Kyoko Shimizu, Erika Noro, Yasumasa Iwasaki, Ken Fujiwara, Atsushi Yokoyama, Akira Sugawara
The mechanism of the negative regulation of proopiomelanocortin gene (Pomc) by glucocorticoids (Gcs) is still unclear in many points. Here, we demonstrated the involvement of neurogenic differentiation factor 1 (NeuroD1) in the Gc-mediated negative regulation of Pomc. Murine pituitary adrenocorticotropic hormone (ACTH) producing corticotroph tumor-derived AtT20 cells were treated with dexamethasone (DEX) (1-100 nM) and cultured for 24 hrs. Thereafter, Pomc mRNA expression was studied by quantitative real-time PCR and rat Pomc promoter (-703/+58) activity was examined by luciferase assay...
2017: PloS One
https://www.readbyqxmd.com/read/28404726/regulation-of-strigolactone-biosynthesis-by-gibberellin-signaling
#15
Shinsaku Ito, Daichi Yamagami, Mikihisa Umehara, Atsushi Hanada, Satoko Yoshida, Yasuyuki Sasaki, Shunsuke Yajima, Junko Kyozuka, Miyako Ueguchi-Tanaka, Makoto Matsuoka, Ken Shirasu, Shinjiro Yamaguchi, Tadao Asami
Strigolactones (SLs) are a class of plant hormones that regulate diverse physiological processes, including shoot branching and root development. They also act as rhizosphere signaling molecules to stimulate the germination of root parasitic weeds and the branching of arbuscular mycorrhizal fungi. Although various types of cross talk between SLs and other hormones have been reported in physiological analyses, the cross talk between gibberellin (GA) and SLs is poorly understood. We screened for chemicals that regulate the level of SLs in rice (Oryza sativa) and identified GA as, to our knowledge, a novel SL-regulating molecule...
June 2017: Plant Physiology
https://www.readbyqxmd.com/read/28366744/fission-yeast-apc15-stabilizes-mcc-cdc20-apc-c-complexes-ensuring-efficient-cdc20-ubiquitination-and-checkpoint-arrest
#16
Karen M May, Flora Paldi, Kevin G Hardwick
During mitosis, cells must segregate the replicated copies of their genome to their daughter cells with extremely high fidelity. Segregation errors lead to an abnormal chromosome number (aneuploidy), which typically results in disease or cell death [1]. Chromosome segregation and anaphase onset are initiated through the action of the multi-subunit E3 ubiquitin ligase known as the anaphase-promoting complex or cyclosome (APC/C [2]). The APC/C is inhibited by the spindle checkpoint in the presence of kinetochore attachment defects [3, 4]...
April 24, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28341363/a-gene-regulatory-program-controlling-early-xenopus-mesendoderm-formation-network-conservation-and-motifs
#17
REVIEW
Rebekah M Charney, Kitt D Paraiso, Ira L Blitz, Ken W Y Cho
Germ layer formation is among the earliest differentiation events in metazoan embryos. In triploblasts, three germ layers are formed, among which the endoderm gives rise to the epithelial lining of the gut tube and associated organs including the liver, pancreas and lungs. In frogs (Xenopus), where early germ layer formation has been studied extensively, the process of endoderm specification involves the interplay of dozens of transcription factors. Here, we review the interactions between these factors, summarized in a transcriptional gene regulatory network (GRN)...
June 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28302118/ybx1-gene-silencing-inhibits-migratory-and-invasive-potential-via-coro1c-in-breast-cancer-in-vitro
#18
Jia Pei Lim, Sukanya Shyamasundar, Jayantha Gunaratne, Olivia Jane Scully, Ken Matsumoto, Boon Huat Bay
BACKGROUND: Y-box binding protein-1 is an evolutionary conserved transcription and translation regulating protein that is overexpressed in various human malignancies, including breast cancer. Despite reports of YB-1 and its association with distant spread of breast cancer, the intrinsic mechanism underlying this observation remains elusive. This study investigates the role of YB-1 in mediating metastasis in highly invasive breast cancer cell lines. METHODS: Silencing the YBX1 gene (which encodes the YB-1 protein) by small interfering RNA (siRNA) was performed in MDA-MB-231 and Hs578T breast cancer cell lines, followed by phenotypic assays including cell migration and invasion assays...
March 16, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28278289/toyocamycin-attenuates-free-fatty-acid-induced-hepatic-steatosis-and-apoptosis-in-cultured-hepatocytes-and-ameliorates-nonalcoholic-fatty-liver-disease-in-mice
#19
Ikuko Takahara, Yuko Akazawa, Maiko Tabuchi, Katsuya Matsuda, Hisamitsu Miyaaki, Youko Kido, Yasuko Kanda, Naota Taura, Ken Ohnita, Fuminao Takeshima, Yusuke Sakai, Susumu Eguchi, Masahiro Nakashima, Kazuhiko Nakao
BACKGROUND AND AIMS: A high serum level of saturated free fatty acids (FFAs) is associated with the development of nonalcoholic fatty liver disease (NAFLD). X-box binding protein-1 (XBP-1) is activated by FFA treatment upon splicing. XBP-1 is a transcription factor induced by the endoplasmic reticulum (ER) stress sensor endoribonuclease inositol-requiring enzyme 1 alpha (IRE1α). However, the role of XBP-1 in NAFLD remains relatively unexplored. Toyocamycin was recently reported to attenuate the activation of XBP-1, possibly by inducing a conformational change in IRE1α...
2017: PloS One
https://www.readbyqxmd.com/read/28228263/reciprocal-regulation-between-53bp1-and-the-anaphase-promoting-complex-cyclosome-is-required-for-genomic-stability-during-mitotic-stress
#20
Thomas J Kucharski, Paul E Minshall, Mohamed Moustafa-Kamal, Andrew S Turnell, Jose G Teodoro
The anaphase-promoting complex/cyclosome (APC/C) is an E3 ubiquitin ligase that targets substrates for degradation to promote mitotic progression. Here, we show that the DNA damage response protein 53BP1 contains conserved KEN boxes that are required for APC/C-dependent degradation in early mitosis. Mutation of the 53BP1 KEN boxes stabilized the protein and extended mitotic duration, whereas 53BP1 knockdown resulted in a shorter and delayed mitosis. Loss of 53BP1 increased APC/C activity, and we show that 53BP1 is a direct APC/C inhibitor...
February 21, 2017: Cell Reports
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