keyword
MENU ▼
Read by QxMD icon Read
search

p53

keyword
https://www.readbyqxmd.com/read/28432554/epigallocatechin-gallate-protects-beas-2b-cells-from-lipopolysaccharide-induced-apoptosis-through-upregulation-of-gastrin-releasing-peptide
#1
Peethambaran Divya, Bijesh Puthusseri, Denny Joseph Kollareth Manual, Mohammed Azharuddin Savanur
Gastrin-releasing peptide (GRP) plays a major role in the development and maintenance of lung epithelial cells by promoting cell division, whereas its suppression causes growth arrest and apoptosis. The present study shows that human bronchial epithelial BEAS-2B cells challenged with lipopolysaccharide (LPS), an endotoxin from gram-negative bacteria, downregulated GRP expression and induced apoptosis via upregulation of p53 and active caspase-3, signifying the importance of GRP in lung epithelial cell survival...
April 21, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28432551/partial-p53-dependence-of-anisomycin-induced-apoptosis-in-pc12-cells
#2
R Schipp, J Varga, J Bátor, M Vecsernyés, Z Árvai, M Pap, József Szeberényi
The bacterial antibiotic anisomycin is known to induce apoptosis by activating several mitogen-activated protein kinases and by inhibiting protein synthesis. In this study, the influence of p53 protein on the apoptosis-inducing effect of anisomycin was investigated. The effect of protein synthesis-inhibiting concentration of anisomycin on apoptotic events was analyzed using Western blot, DNA fragmentation, and cell viability assays in wild-type PC12 and in mutant p53 protein expressing p143p53PC12 cells. Anisomycin stimulated the main apoptotic pathways in both cell lines, but p143p53PC12 cells showed lower sensitivity to the drug than their wild-type counterparts...
April 21, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28431977/transcriptome-comparison-reveals-insights-into-muscle-response-to-hypoxia-in-blunt-snout-bream-megalobrama-amblycephala
#3
Bo-Xiang Chen, Shao-Kui Yi, Wei-Feng Wang, Yan He, Yan Huang, Ze-Xia Gao, Hong Liu, Wei-Min Wang, Huan-Ling Wang
The economic and biological significance of blunt snout bream (Megalobrama amblycephala) makes this species important to explore the underlying molecular mechanism of hypoxia response. In the present study, we compared the transcriptional responses to serious hypoxia in skeletal muscle among hypoxia tolerant (MT), sensitive (MS) and control (without hypoxia treatment, MC) M. amblycephala obtained according to the time difference of losing balance after hypoxia treatment. A total of 88,200,889 clean reads were generated and assembled into 44,493 unigenes...
April 18, 2017: Gene
https://www.readbyqxmd.com/read/28431961/ionizing-radiation-induces-long-term-senescence-in-endothelial-cells-through-mitochondrial-respiratory-complex-ii-dysfunction-and-superoxide-generation
#4
Audrey Lafargue, Charlotte Degorre, Isabelle Corre, Marie-Clotilde Alves-Guerra, Marie-Hélène Gaugler, François Vallette, Claire Pecqueur, François Paris
Ionizing radiation causes oxidative stress, leading to acute and late cellular responses. We previously demonstrated that irradiation of non-proliferating endothelial cells, as observed in normal tissues, induces early apoptosis, which can be inhibited by pretreatment with Sphingosine-1-Phosphate. We now propose to better characterize the long-term radiation response of endothelial cells by studying the molecular pathways associated with senescence and its link with acute apoptosis. First, senescence was validated in irradiated quiescent microvascular HMVEC-L in a dose- and time-dependent manner by SA β-galactosidase staining, p16(Ink4a) and p21(Waf1) expression, pro-inflammatory IL-8 secretion and DNA damage response activation...
April 18, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28431405/usp5-functions-as-an-oncogene-for-stimulating-tumorigenesis-in-hepatocellular-carcinoma
#5
Yi Liu, Wei-Mao Wang, Ying-Fei Lu, Lu Feng, Li Li, Ming-Zhu Pan, Yu Sun, Chun-Wai Suen, Wei Guo, Jian-Xin Pang, Jin-Fang Zhang, Wei-Ming Fu
As deubiquitinases, several ubiquitin specific protease members have been reported to mediate tumorigenesis. Although ubiquitin specific protease 5 (Usp5) was previously demonstrated to suppress p53 transcriptional activity and DNA repair, its role in carcinogenesis remains elusive. In this study, we sought to define a novel role of Usp5 in tumorigenesis. It was found that Usp5 was significantly upregulated in hepatocellular carcinoma (HCC) cells and most clinical specimens. Further functional investigation also showed that Usp5 knockdown suppressed cell proliferation, migration, drug resistance and induced apoptosis; on the other hand, Usp5 overexpression promoted colony formation, migration, drug resistance and tumorigenesis...
April 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430874/developmental-sall2-transcription-factor-a-new-player-in-cancer
#6
Viviana E Hermosilla, Matias I Hepp, David Escobar, Carlos Farlas, Elizabeth N Riffo, Ariel F Castro, Roxana Pincheira
SALL2, also known as Spalt-like transcription factor 2, is a member of the SALL family of transcription factors involved in development and conserved through evolution. Since its identification in 1996, findings indicate that SALL2 plays a role in neurogenesis, neuronal differentiation and eye development. Consistently, SALL2 deficiency associates with neural tube defects and coloboma, a congenital eye disease. Relevant to cancer, clinical studies indicate that SALL2 is deregulated in various cancers, and is a specific biomarker for Synovial Sarcoma...
April 18, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28430625/mir-766-induces-p53-accumulation-and-g2-m-arrest-by-directly-targeting-mdm4
#7
Qingqing Wang, Luke A Selth, David F Callen
p53, a transcription factor that participates in multiple cellular functions, is considered the most important tumor suppressor. Previous evidence suggests that post-transcriptional deregulation of p53 by microRNAs contributes to tumorigenesis, tumor progression and therapeutic resistance. In the present study, we found that the microRNA miR-766 was aberrantly expressed in breast cancer, and that over-expression of miR-766 caused accumulation of wild-type p53 protein in multiple cancer cell lines. Supporting its role in the p53 signalling pathway, miR-766 decreased cell proliferation and colony formation in several cancer cell lines, and cell cycle analyses revealed that miR-766 causes G2 arrest...
February 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28430184/the-ubiquitin-ligase-lin41-trim71-targets-p53-to-antagonize-cell-death-and-differentiation-pathways-during-stem-cell-differentiation
#8
Duong Thi Thuy Nguyen, Daniel Richter, Geert Michel, Sibylle Mitschka, Waldemar Kolanus, Elisa Cuevas, F Gregory Wulczyn
Rapidity and specificity are characteristic features of proteolysis mediated by the ubiquitin-proteasome system. Therefore, the UPS is ideally suited for the remodeling of the embryonic stem cell proteome during the transition from pluripotent to differentiated states and its inverse, the generation of inducible pluripotent stem cells. The Trim-NHL family member LIN41 is among the first E3 ubiquitin ligases to be linked to stem cell pluripotency and reprogramming. Initially discovered in C. elegans as a downstream target of the let-7 miRNA, LIN41 is now recognized as a critical regulator of stem cell fates as well as the timing of neurogenesis...
April 21, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28429358/slpi-promotes-the-gastric-cancer-growth-and-metastasis-by-regulating-the-expression-of-p53-bcl-2-and-caspase-8
#9
X-Y Du, X Liu, Z-J Wang, Y-Y Wang
OBJECTIVE: The incidence of gastric cancer is very high all over the world, but the mechanism of the occurrence and development of gastric cancer is unclear. Secretory leukocyte protease inhibitor (SLPI) is overexpressed in gastric, lung and ovarian cancers, which accelerates the metastasis of cancer cells. In this research, we mainly explored the expression level and possible mechanism of SLPI in gastric cancer. PATIENTS AND METHODS: The expression and clinical significance of SLPI in 68 cases of gastric cancer tissues and adjacent tissues were detected by qRT-PCR...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28428754/pu-erh-tea-water-extract-mediates-cell-cycle-arrest-and-apoptosis-in-mda-mb-231-human-breast-cancer-cells
#10
Jing Xie, Haishuang Yu, Shuang Song, Chongye Fang, Xuanjun Wang, Zhongbin Bai, Xiao Ma, Shumei Hao, Hong-Ye Zhao, Jun Sheng
Pu-erh tea is believed to have health benefits, the growth inhibition activity of Pu-erh tea on breast cancer cell has not been investigated. In this study, we examined the activity of Pu-erh tea water extract on apoptosis and cell cycle arrest in the human breast adenocarcinoma cell line MDA-MB-231 and clarified its underlying mechanism of action. We found that Pu-erh tea extract inhibited cell proliferation and induced apoptosis in a dose-dependent manner. We also found that Pu-erh tea extract inhibited tumor cell growth within 24 h via accumulation of cells in S phase...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28428710/cma-down-regulates-p53-expression-through-degradation-of-hmgb1-protein-to-inhibit-irradiation-triggered-apoptosis-in-hepatocellular-carcinoma
#11
Jing-Hua Wu, Jia-Pei Guo, Jun Shi, Hui Wang, Lei-Lei Li, Bin Guo, Dian-Xing Liu, Qing Cao, Zhi-Yong Yuan
AIM: To investigate the mechanism of chaperone-mediated autophagy (CMA)-induced resistance to irradiation-triggered apoptosis through regulation of the p53 protein in hepatocellular carcinoma (HCC). METHODS: Firstly, we detected expression of lysosome-associated membrane protein 2a (Lamp-2a), which is the key protein of CMA, by western blot in HepG2 and SMMC7721 cells after irradiation. We further used shRNA Lamp-2a HCC cells to verify the radioresistance induced by CMA...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28427776/autoantibody-biomarkers-for-the-detection-of-serous-ovarian-cancer
#12
Benjamin A Katchman, Diego Chowell, Garrick Wallstrom, Allison F Vitonis, Joshua LaBaer, Daniel W Cramer, Karen S Anderson
Objective The purpose of this study was to identify a panel of novel serum tumor antigen-associated autoantibody (TAAb) biomarkers for the diagnosis of high-grade serous ovarian cancer. METHODS: To detect TAAb we probed high-density programmable protein microarrays (NAPPA) containing 10,247 antigens with sera from patients with serous ovarian cancer (n=30 cases/30 healthy controls) and measured bound IgG. We identified 735 promising tumor antigens and evaluated these with an independent set of serous ovarian cancer sera (n=30 cases/30 benign disease controls/30 healthy controls)...
April 17, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28427506/recent-advances-in-genitourinary-tumors-a-review-focused-on-biology-and-systemic-treatment
#13
REVIEW
Aránzazu González Del Alba, José Ángel Arranz, Javier Puente, María José Méndez-Vidal, Enrique Gallardo, Enrique Grande, Begoña Pérez-Valderrama, Enrique González-Billalabeitia, Martín Lázaro-Quintela, Álvaro Pinto, Nuria Lainez, Josep M Piulats, Emilio Esteban, José Pablo Maroto Rey, Jorge A García, Cristina Suárez
Updated information published up to 2016 regarding major advances in renal cancer, bladder cancer, and prostate cancer is here presented. Based on an ever better understanding of the genetic and molecular alterations that govern the initial pathogenic mechanisms of tumor oncogenesis, an improvement in the characterization and treatment of urologic tumors has been achieved in the past year. According to the Cancer Genome Atlas (ATLAS) project, alterations in the MET pathway are characteristics of type 1 papillary renal cell carcinomas, and activation of NRF2-ARE pathway is associated with the biologically distinct type 2...
May 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28427210/dependence-of-p53-deficient-cells-on-the-dhx9-dexh-box-helicase
#14
Teresa Lee, Jerry Pelletier
DHX9 is a DExH-box helicase family member with key regulatory roles in a broad range of cellular processes. It participates at multiple levels of gene regulation, including DNA replication, transcription, translation, RNA transport, and microRNA processing. It has been implicated in tumorigenesis and recent evidence suggests that it may be a promising chemotherapeutic target. Previous studies have determined that DHX9 suppression elicits an apoptotic or senescence response by activating p53 signaling. Here, we show that DHX9 inhibition can also have deleterious effects in cells lacking functional p53...
March 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28427200/idh1-r132h-mutation-regulates-glioma-chemosensitivity-through-nrf2-pathway
#15
Kaishu Li, Leping Ouyang, Mingliang He, Ming Luo, Wangqing Cai, Yalin Tu, Rongbiao Pi, Anmin Liu
PURPOSE: Numerous studies have reported that glioma patients with isocitrate dehydrogenase 1(IDH1) R132H mutation are sensitive to temozolomide treatment. However, the mechanism of IDH1 mutations on the chemosensitivity of glioma remains unclear. In this study, we investigated the role and the potential mechanism of Nrf2 in IDH1 R132H-mediated drug resistance. METHODS: Wild type IDH1 (R132H-WT) and mutant IDH1 (R132H) plasmids were constructed. Stable U87 cells and U251 cells overexpressing IDH1 were generated...
March 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28427185/transcriptional-landscape-of-human-cancers
#16
Mengyuan Li, Qingrong Sun, Xiaosheng Wang
The homogeneity and heterogeneity in somatic mutations, copy number alterations and methylation across different cancer types have been extensively explored. However, the related exploration based on transcriptome data is lacking. In this study we explored gene expression profiles across 33 human cancer types using The Cancer Genome Atlas (TCGA) data. We identified consistently upregulated genes (such as E2F1, EZH2, FOXM1, MYBL2, PLK1, TTK, AURKA/B and BUB1) and consistently downregulated genes (such as SCARA5, MYOM1, NKAPL, PEG3, USP2, SLC5A7 and HMGCLL1) across various cancers...
March 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28426877/knockdown-of-hnrnpk-leads-to-increased-dna-damage-after-irradiation-and-reduces-survival-of-tumor-cells
#17
Nadine Wiesmann, Judith Strozynski, Carina Beck, Nadine Zimmermann, Simone Mendler, Rita Gieringer, Irene Schmidtmann, Jürgen Brieger
Radiotherapy is an important treatment option in the therapy of multiple tumor entities among them head and neck squamous cell carcinoma (HNSCC). However, the success of radiotherapy is limited by the development of radiation resistances. Heterogeneous nuclear ribonucleoprotein K (hnRNPK) is a cofactor of p53 and represents a potential target for radio sensitization of tumor cells. In this study, we analyzed the impact of hnRNPK on the DNA damage response after gamma irradiation. By yH2AX foci analysis, we found that hnRNPK knockdown increases DNA damage levels in irradiated cells...
March 1, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28426804/dna-damage-induces-expression-of-wwp1-to-target-%C3%AE-np63%C3%AE-to-degradation
#18
Ji Chen, Hua Shi, Yonglong Chen, Shijie Fan, Dingyi Liu, Chenghua Li
ΔNp63αplays key roles in cell survival and proliferation. So its expression is always tightly controlled in cells. We previously reported that DNA damage down-regulates transcription of ΔNp63αin FaDu and HaCat cells, which contributes to cell apoptosis. In the present study, we found that DNA damage induces down-regulation of ΔNp63αvia facilitating its proteasomal degradation in cell lines such as MDA-MB-231 and MCF10A. Further investigation revealed that transcription of WWP1 is stimulated by DNA damage in these cells...
2017: PloS One
https://www.readbyqxmd.com/read/28426725/dynamic-regulation-of-pin1-expression-and-function-during-zebrafish-development
#19
Maria Solange Ibarra, Carla Borini Etichetti, Carolina Di Benedetto, Germán L Rosano, Ezequiel Margarit, Giannino Del Sal, Marina Mione, Javier Girardini
The prolyl isomerase Pin1 plays a key role in the modulation of proline-directed phosphorylation signaling by inducing local conformational changes in phosphorylated protein substrates. Extensive studies showed different roles for Pin1 in physiological processes and pathological conditions such as cancer and neurodegenerative diseases. However, there are still several unanswered questions regarding its biological role. Notably, despite evidences from cultured cells showing that Pin1 expression and activity may be regulated by different mechanisms, little is known on their relevance in vivo...
2017: PloS One
https://www.readbyqxmd.com/read/28426525/gstm1-and-gstt1-genes-are-associated-with-dna-damage-of-p53-gene-in-coke-oven-workers
#20
Yuefeng He, Jun Qi, Fang He, Yongchang Zhang, Youlian Wang, Ruobing Zhang, Gang Li
OBJECTIVES: This study investigated whether variations in GSTT1 and GSTM1 gene are associated with the DNA damage level of p53 gene. METHODS: We quantified urinary 1-hydroxypyrene using high-performance liquid chromatography, and examined the DNA damage level of p53 gene by real-time quantitative PCR in 756 coke-oven workers. Multiplex PCR was used to detect the presence or absence of genes. RESULTS: DNA damage levels of p53 gene in the high exposure group and intermediate exposure group were significantly higher than that of p53 gene in the low exposure group (P < 0...
April 19, 2017: Journal of Occupational and Environmental Medicine
keyword
keyword
925
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"