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P53 -apoptosis

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https://www.readbyqxmd.com/read/28944905/myricitrin-decreases-traumatic-injury-of-the-spinal-cord-and-exhibits-antioxidant-and-anti%C3%A2-inflammatory-activities-in-a-rat-model-via-inhibition-of-cox%C3%A2-2-tgf%C3%A2-%C3%AE-1-p53-and-elevation-of-bcl%C3%A2-2-bax-signaling-pathway
#1
Yang Lei
Myricitrin has multiple effects, including antagonism of platelet activating factor, regulation of blood sugar levels, oxidation resistance, protection of the liver and the relieving of ethylism. The present study evaluated how myricitrin weakens traumatic injury of the spinal cord (TISC), and exhibits antioxidant and anti‑inflammatory activities in a rat model. TISC model rats were injected intraperitoneally with 5, 10 or 30 mg/kg/day of myricitrin for 5 days. Basso‑Beattie‑Bresnahan evaluation of locomotion and water content of spinal cord were used to analyze the effects of myricitrin on TISC...
September 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944836/aberrant-promoter-methylation-of-multiple-genes-in-vsmc-proliferation-induced-by-hcy
#2
Sheng-Chao Ma, Jian-Cheng Cao, Hui-Ping Zhang, Yun Jiao, Hui Zhang, Yang-Yang He, Yan-Hua Wang, Xiao-Ling Yang, An-Ning Yang, Jue Tian, Ming-Hao Zhang, Xiao-Ming Yang, Guan-Jun Lu, Shao-Ju Jin, Yue-Xia Jia, Yi-Deng Jiang
Vascular smooth muscle cell (VSMC) proliferation is a primary pathological event in atherosclerosis (AS), and homocysteine (Hcy) is an independent risk factor for AS. However, the underlying mechanisms are still lagging. Studies have used the combination of methylation of promoters of multiple genes to diagnose tumors, thus the aim of the current study was to investigate the role of methylation status of several genes in VSMCs treated with Hcy. CpG islands were identified in the promoters of platelet‑derived growth factor (PDGF), p53, phosphatase and tensin homologue on chromosome 10 (PTEN) and mitofusin 2 (MFN2)...
September 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28943972/small-non-coding-rna-abundance-in-adrenocortical-carcinoma-a-footprint-of-a-rare-cancer
#3
Srinivas V Koduru, Ashley N Leberfinger, Dino J Ravnic
BACKGROUND: Adrenocortical carcinoma (ACC) is a relatively rare, but aggressive type of cancer, which affects both children and adults. OBJECTIVE: Small non-coding RNAs (sncRNAs) play important roles and may serve as biomarkers for disease diagnosis, prognosis and treatment. METHODS: In our study, we sought to identify sncRNAs associated with malignant adrenal tumors. We obtained publicly available, small RNA sequencing data derived from 45 ACC and 30 benign tumors arising from the cortex of the adrenal gland, adrenocortical adenomas (ACA), and compared their sncRNA expression profiles...
2017: Journal of Genomics
https://www.readbyqxmd.com/read/28943955/p53-inhibits-the-upregulation-of-sirtuin-1-expression-induced-by-c-myc
#4
Fang Yuan, Lu Liu, Yonghong Lei, Peifu Tang
Sirtuin 1 (Sirt1), a conserved NAD(+) dependent deacetylase, is a mediator of life span by calorie restriction. However, Sirt1 may paradoxically increase the risk of cancer. Accordingly, the expression level of Sirt1 is selectively elevated in numerous types of cancer cell; however, the mechanisms underlying the differential regulation remain largely unknown. The present study demonstrated that oncoprotein c-Myc was a direct regulator of Sirt1, which accounts for the upregulation of Sirt1 expression only in the cells without functional p53...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943948/analysis-of-the-expression-level-and-methylation-of-tumor-protein-p53-phosphatase-and-tensin-homolog-and-muts-homolog-2-in-n-methyl-n-nitrosourea-induced-thymic-lymphoma-in-c57bl-6-mice
#5
Xueyun Huo, Zhenkun Li, Shuangyue Zhang, Changlong Li, Meng Guo, Jing Lu, Jianyi Lv, Xiaoyan Du, Zhenwen Chen
Tumorigenesis is often caused by somatic mutation or epigenetic changes in genes that regulate aspects of cell death, proliferation and survival. Although the functions of multiple tumor suppressor genes have been well studied in isolation, how these genes cooperate during the progression of a single tumor remains unclear in numerous cases. The present study used N-methyl-N-nitrosourea (MNU), one of the most potent mutagenic nitrosourea compounds, to induce thymic lymphoma in C57BL/6J mice. Subsequently, the protein expression levels of phosphatase and tensin homolog (PTEN), transformation protein 53 and mutS homolog 2 (MSH2) were evaluated concomitantly in the thymus, liver, kidney and spleen of MNU-treated mice by western blotting...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28943519/smoking-human-papillomavirus-infection-and-p53-mutation-as-risk-factors-in-oropharyngeal-cancer-a-case-control-study
#6
P Ks Chan, J Sy Chor, A C Vlantis, T L Chow, S C Fung, C H Lau, F Yh Ng, C S Wong
No abstract text is available yet for this article.
August 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/28943452/long-non-coding-rna-hnf1a-as1-mediated-repression-of-mir-34a-sirt1-p53-feedback-loop-promotes-the-metastatic-progression-of-colon-cancer-by-functioning-as-a-competing-endogenous-rna
#7
Changyi Fang, Shenglong Qiu, Feng Sun, Wei Li, Ziqi Wang, Ben Yue, Xuesong Wu, Dongwang Yan
In recent years, accumulating evidence indicates that long noncoding RNAs (lncRNAs) have emerged as powerful influence factors in the progression of multiple malignancies. Dysregulation of lncRNA HNF1A-antisense 1 (HNF1A-AS1) has been reported in many types of human cancers, and studies on HNF1A-AS1 function in cancers revealed that HNF1A-AS1could act as either oncogene or tumor suppressor. Nevertheless, the functional involvement of HNF1A-AS1 in colon cancer remains unknown. In this study, we reported that HNF1A-AS1 was frequently upregulated in colon cancer tissues and associated with poor prognosis...
September 21, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28941494/current-understanding-of-the-genetic-causes-of-keloid-formation
#8
REVIEW
Donald A Glass
Keloids are an exuberant response to cutaneous wound healing. Several lines of evidence suggest that keloid scarring is influenced by genetic factors. This review will discuss our current understanding of genetic influences on keloidal scarring via familial inheritance patterns; ethnic differences in prevalence; syndromes with keloid occurrence; linkage analysis, genome-wide association studies, and admixture mapping studies; transforming growth factor beta and p53 variant studies; and human leukocyte antigen polymorphisms...
October 2017: Journal of Investigative Dermatology. Symposium Proceedings
https://www.readbyqxmd.com/read/28940304/the-foxa2-transcription-factor-is-frequently-somatically-mutated-in-uterine-carcinosarcomas-and-carcinomas
#9
Matthieu Le Gallo, Meghan L Rudd, Mary Ellen Urick, Nancy F Hansen, Maria J Merino, David G Mutch, Paul J Goodfellow, James C Mullikin, Daphne W Bell
BACKGROUND: Uterine carcinosarcomas (UCSs) are a rare but clinically aggressive form of cancer. They are biphasic tumors consisting of both epithelial and sarcomatous components. The majority of uterine carcinosarcomas are clonal, with the carcinomatous cells undergoing metaplasia to give rise to the sarcomatous component. The objective of the current study was to identify novel somatically mutated genes in UCSs. METHODS: We whole exome sequenced paired tumor and nontumor DNAs from 14 UCSs and orthogonally validated 464 somatic variants using Sanger sequencing...
September 21, 2017: Cancer
https://www.readbyqxmd.com/read/28940121/anti-cenp-b-and-anti-topo-1-containing-sera-from-systemic-sclerosis-related-diseases-with-raynaud-s-phenomenon-induce-vascular-endothelial-cell-senescence-not-via-classical-p53-p21-pathway
#10
Chieh-Yu Shen, Ko-Jen Li, Pei-Hsuan Lai, Chia-Li Yu, Song-Chou Hsieh
Raynaud's phenomenon (RP) is the earliest and most common clinical manifestation in patients with systemic sclerosis (SSc) and its related diseases containing anti-TOPO-1 and/or anti-CENP-B autoantibodies in the sera. However, the cause-effect relationship between the two autoantibodies and RP remains elucidation. Sera containing anti-CENP-B and anti-TOPO-1 autoantibodies were obtained from SSc-related diseases manifesting RP. The polyclonal auto-antibodies were purified from pooled sera by affinity chromatography...
September 23, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28939680/mobilizing-transit-amplifying-cell-derived-ectopic-progenitors-prevents-hair-loss-from-chemotherapy-or-radiation-therapy
#11
Wen-Yen Huang, Shih-Fan Lai, Hsien-Yi Chiu, Michael Chang, Maksim Plikus, Chih-Chieh Chan, You-Tzung Chen, Po-Nien Tsao, Tsung-Lin Yang, Hsuan-Shu Lee, Peter Chi, Sung-Jan Lin
Genotoxicity-induced hair loss from chemotherapy and radiotherapy is often encountered in cancer treatment, and there is a lack of effective treatment. In growing hair follicles (HF), quiescent stem cells (SC) are maintained in the bulge region and hair bulbs at the base contain rapidly dividing, yet genotoxicity-sensitive transit-amplifying cells (TAC) that maintain hair growth. How genotoxicity-induced HF injury is repaired remains unclear. We report here that HF mobilize ectopic progenitors from distinct TAC compartments for regeneration in adaptation to the severity of dystrophy induced by ionizing radiation (IR)...
September 22, 2017: Cancer Research
https://www.readbyqxmd.com/read/28939059/complex-integrated-analysis-of-lncrnas-mirnas-mrnas-in-oral-squamous-cell-carcinoma
#12
Simin Li, Xiujie Chen, Xiangqiong Liu, Yang Yu, Hongying Pan, Rainer Haak, Jana Schmidt, Dirk Ziebolz, Gerhard Schmalz
OBJECTIVES: This study aims to reveal regulatory network of lncRNAs-miRNAs-mRNAs in oral squamous cell carcinoma (OSCC) through gene expression data. MATERIAL AND METHODS: Differentially expressed lncRNAs, miRNAs and mRNAs (cut-off: False discovery rate (FDR)<0.05 and |fold change|>1.5) were unveiled by package edgeR of R. Cox regression analysis was performed to screen prognostic factors in OSCC related with overall survival (OS) and relapse-free survival (RFS)...
October 2017: Oral Oncology
https://www.readbyqxmd.com/read/28938615/biomarker-immunoprofile-in-salivary-duct-carcinomas-clinicopathological-and-prognostic-implications-with-evaluation-of-the-revised-classification
#13
Soichiro Takase, Satoshi Kano, Yuichiro Tada, Daisuke Kawakita, Tomotaka Shimura, Hideaki Hirai, Kiyoaki Tsukahara, Akira Shimizu, Yorihisa Imanishi, Hiroyuki Ozawa, Kenji Okami, Yuichiro Sato, Yukiko Sato, Chihiro Fushimi, Takuro Okada, Hiroki Sato, Kuninori Otsuka, Yoshihiro Watanabe, Akihiro Sakai, Koji Ebisumoto, Takafumi Togashi, Yushi Ueki, Hisayuki Ota, Toyoyuki Hanazawa, Hideaki Chazono, Robert Yoshiyuki Osamura, Toshitaka Nagao
Salivary duct carcinoma (SDC) is an uncommon, aggressive malignant neoplasm histologically resembling high-grade mammary ductal carcinoma. SDC can arise de novo or ex pleomorphic adenoma. To clarify the correlation of biomarker immunoprofile with clinicopathological findings and clinical outcome of SDC, we conducted immunohistochemistry for EGFR, HER2, HER3, AR, CK5/6, p53, and Ki-67, along with HER2 fluorescence in situ hybridization in 151 SDCs. SDCs ex pleomorphic adenoma more commonly overexpressed EGFR, HER2, HER3, and Ki-67 than de novo SDCs (P = 0...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938549/long-non-coding-rnas-may-serve-as-biomarkers-in-breast-cancer-combined-with-primary-lung-cancer
#14
Xianfeng Ding, Yuhan Zhang, Hongjian Yang, Weimin Mao, Bo Chen, Shifeng Yang, Xiaowen Ding, Dehong Zou, Wenju Mo, Xiangming He, Xiping Zhang
Long non-coding RNAs (lncRNAs) have been shown to play important regulatory role in certain type of cancers biology, including breast and lung cancers. However, the lncRNA expression in breast cancer combined with primary lung cancer remains unknown. In this study, databases of the Cancer Genome Atlas (TCGA) and the lncRNA profiler of contained candidate 192 lncRNAs were utilized. 11 lncRNAs were differentially expressed in breast cancer, 9 candidate lncRNAs were differentially expressed in lung cancer. In order to find the aberrant expression of lncRNAs in breast cancer combined with primary lung cancer, seven samples of primary breast cancer and lung cancer were studied for the expression of selected lncRNAs...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938461/adipokines-and-their-receptor-are-widely-expressed-and-distinctly-regulated-by-the-metabolic-environment-in-the-prostate-of-male-mice-direct-role-under-normal-and-tumoral-conditions
#15
André Sarmento-Cabral, Fernando L-López, Raúl M Luque
Adipose tissue-derived adipokines (i.e. leptin/adiponectin/resistin) play important roles in the regulation of several pathophysiological processes through the activation of specific receptors. However, although adipokines and their receptors are widely distributed in many tissues and exhibit a clear modulation by the particular metabolic conditions (e.g. obesity and/or fasting), their expression, regulation, and putative action on normal prostate-glands (PGs; a hormone-dependent organ tightly regulated by the endocrine-metabolic milieu) is still to be defined...
August 9, 2017: Endocrinology
https://www.readbyqxmd.com/read/28938159/lunatic-fringe-and-p53-cooperatively-suppress-mesenchymal-stem-like-breast-cancer
#16
Wen-Cheng Chung, Shubing Zhang, Lavanya Challagundla, Yunyun Zhou, Keli Xu
Claudin-low breast cancer (CLBC) is a poor prognosis molecular subtype showing stemness and mesenchymal features. We previously discovered that deletion of a Notch signaling modulator, Lunatic Fringe (Lfng), in the mouse mammary gland induced a subset of tumors resembling CLBC. Here we report that deletion of one copy of p53 on this background not only accelerated mammary tumor development but also led to a complete penetrance of the mesenchymal stem-like phenotype. All mammary tumors examined in the Lfng/p53 compound mutant mice displayed a mesenchymal/spindloid pathology...
September 19, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28937022/yield-of-p53-expression-in-esophageal-squamous-cell-cancer-and-its-relationship-with-survival
#17
Tushar H Sankalecha, Sudhir J Gupta, Nitin R Gaikwad, Nikhil U Shirole, Harit G Kothari
BACKGROUND/AIMS: Esophageal squamous cell carcinoma (ESCC) is the most aggressive type of cancer. Mutation of tumor suppressor gene p53 is observed in many gastrointestinal malignancies including ESCC. The immunohistochemical protein expression of mutant p53 has been proposed as a potential tool to evaluate the biological behavior of ESCC. Predictive value of p53 for survival is debatable, hence this study was formulated to know the survival of patients with p53 expression in ESCC. PATIENTS AND METHODS: We prospectively included 91 consecutive patients of ESCC from August 2014 to August 2016...
September 2017: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
https://www.readbyqxmd.com/read/28935368/ube2t-promotes-hepatocellular-carcinoma-cell-growth-via-ubiquitination-of-p53
#18
Li-Ping Liu, Mei Yang, Quan-Zhou Peng, Ming-Yue Li, Yu-Sen Zhang, Yue-Hua Guo, Yang Chen, Shi-Yun Bao
Deregulation of Ubiquitin-conjugating enzyme E2T (UBE2T) contributes to the progression of human cancers. However, its clinical significance and role in hepatocellular carcinoma (HCC) remain unclear. Here, we show that UBE2T is up-regulated in HCC and exerts oncogenic activities via ubiquitination of p53. High UBE2T expression was correlated with higher pathological grade, advanced TNM stage, tumor vascular invasion, and poor overall and disease-free survivals in two independent cohorts containing 827 patients with HCC...
September 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28934293/generation-of-a-pancreatic-cancer-model-using-a-pdx1-flp-recombinase-knock-in-allele
#19
Jinghai Wu, Xin Liu, Sunayana G Nayak, Jason R Pitarresi, Maria C Cuitiño, Lianbo Yu, Blake E Hildreth, Katie A Thies, Daniel J Schilling, Soledad A Fernandez, Gustavo Leone, Michael C Ostrowski
The contribution of the tumor microenvironment to the development of pancreatic adenocarcinoma (PDAC) is unclear. The LSL-KrasG12D/+;LSL-p53R172H/+;Pdx-1-Cre (KPC) tumor model, which is widely utilized to faithfully recapitulate human pancreatic cancer, depends on Cre-mediated recombination in the epithelial lineage to drive tumorigenesis. Therefore, specific Cre-loxP recombination in stromal cells cannot be applied in this model, limiting the in vivo investigation of stromal genetics in tumor initiation and progression...
2017: PloS One
https://www.readbyqxmd.com/read/28934017/p53-and-mir-34b-c-genetic-variation-and-their-impact-on-ulcerative-colitis-susceptibility
#20
Z Hosseinpour, Z Salehi, S Talesh Sasani, K Aminian
No abstract text is available yet for this article.
September 21, 2017: British Journal of Biomedical Science
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