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https://www.readbyqxmd.com/read/29148754/eurycomalactone-inhibits-expression-of-endothelial-adhesion-molecules-at-a-post-transcriptional-level
#1
Clemens Malainer, Daniel Schachner, Enrico Sangiovanni, Atanas G Atanasov, Stefan Schwaiger, Hermann Stuppner, Elke H Heiss, Verena M Dirsch
The C-19 quassinoid eurycomalactone (1) has recently been shown to be a potent (IC50 = 0.5 μM) NF-κB inhibitor in a luciferase reporter model. In this study, we show that 1 with similar potency inhibited the expression of the NF-κB-dependent target genes ICAM-1, VCAM-1, and E-selectin in TNFα-activated human endothelial cells (HUVECtert) by flow cytometry experiments. Surprisingly, 1 (2 μM) did not inhibit TNFα-induced IKKα/β or IκBα phosphorylation significantly. Also, the TNFα-induced degradation of IκBα remained unchanged in response to 1 (2 μM)...
November 17, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/29147614/exploiting-a-new-strategy-to-induce-immunogenic-cell-death-to-improve-dendritic-cell-based-vaccines-for-lymphoma-immunotherapy
#2
B Montico, C Lapenta, M Ravo, D Martorelli, E Muraro, B Zeng, E Comaro, M Spada, S Donati, S M Santini, R Tarallo, G Giurato, F Rizzo, A Weisz, F Belardelli, R Dolcetti, J Dal Col
Although promising, the clinical benefit provided by dendritic cell (DC)-based vaccines is still limited and the choice of the optimal antigen formulation is still an unresolved issue. We have developed a new DC-based vaccination protocol for aggressive and/or refractory lymphomas which combines the unique features of interferon-conditioned DC (IFN-DC) with highly immunogenic tumor cell lysates (TCL) obtained from lymphoma cells undergoing immunogenic cell death. We show that treatment of mantle cell lymphoma (MCL) and diffuse large B-cell lymphoma (DLBCL) cell lines with 9-cis-retinoic acid and IFNα (RA/IFNα) induces early membrane exposure of Calreticulin, HSP70 and 90 together with CD47 down-regulation and enhanced HMGB1 secretion...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29142867/immunohistochemical-evaluation-of-p63-and-cyclin-d1-in-oral-squamous-cell-carcinoma-and-leukoplakia
#3
Sunit B Patel, Bhari S Manjunatha, Vandana Shah, Nishit Soni, Rakesh Sutariya
Objectives: There are only a limited number of studies on cyclin D1 and p63 expression in oral squamous cell carcinoma (OSCC) and leukoplakia. This study compared cyclin D1 and p63 expression in leukoplakia and OSCC to investigate the possible correlation of both markers with grade of dysplasia and histological grade of OSCC. Materials and Methods: The study included a total of 60 cases, of which 30 were diagnosed with OSCC and 30 with leukoplakia, that were evaluated immunohistochemically for p63 and cyclin D1 expression...
October 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/29142597/microrna-193a-3p-inhibits-cell-proliferation-in-prostate-cancer-by-targeting-cyclin-d1
#4
Yunfu Liu, Xin Xu, Xianglai Xu, Shiqi Li, Zhen Liang, Zhenghui Hu, Jian Wu, Yi Zhu, Xiaodong Jin, Xiao Wang, Yiwei Lin, Hong Chen, Yeqing Mao, Jindan Luo, Xiangyi Zheng, Liping Xie
MicroRNAs (miRNAs) are small non-coding RNAs that affect various biological processes by altering the expression of a target gene. An miRNA microarray analysis has previously revealed a significant decrease in miR-193a-3p levels in prostate cancer tissues compared with that in their benign prostate hyperplasia counterparts. However, the role of miR-193a-3p has yet to be elucidated. In the present study, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was used to evaluate the expression levels of miR-193a-3p in two human prostate cancer cell lines...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29142233/crystal-structure-of-the-n-terminal-domain-of-human-cdc73-and-its-implications-for-the-hyperparathyroidism-jaw-tumor-hpt-jt-syndrome
#5
Wei Sun, Xiao-Lin Kuang, Yan-Ping Liu, Li-Fei Tian, Xiao-Xue Yan, Wenqing Xu
CDC73/Parafibromin is a critical component of the Paf1 complex (PAF1C), which is involved in transcriptional elongation and histone modifications. Mutations of the human CDC73/HRPT2 gene are associated with hyperparathyroidism-jaw tumor (HPT-JT) syndrome, an autosomal dominant disorder. CDC73/parafibromin was initially recognized as a tumor suppressor by inhibiting cell proliferation via repression of cyclin D1 and c-myc genes. In recent years, it has also shown oncogenic features by activating the canonical Wnt/β-catenin signal pathway...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29141833/comparative-study-of-the-clinical-histological-and-biological-characteristics-of-squamous-cell-carcinomas-in-areas-previously-treated-with-photodynamic-therapy
#6
Tamara Gracia Cazaña, Nerea Salazar, Jesús Vera-Álvarez, Salvador González, Angeles Juarranz, Yolanda Gilaberte
Although photodynamic therapy (PDT) is an effective treatment option for non-melanoma skin cancer, the development of aggressive tumours in PDT-treated areas has been described. To evaluate the clinical, histological, and biological characteristics of squamous cell carcinomas (SCCs) in areas previously treated with PDT vs those arising in areas never treated with this therapeutic modality. A retrospective observational study was designed. We collected all cases of invasive SCCs in areas previously treated with PDT...
November 15, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/29140993/prognostic-significance-of-cyclin-d1-protein-expression-and-gene-amplification-in-invasive-breast-carcinoma
#7
Angela B Ortiz, Diego Garcia, Yolanda Vicente, Magda Palka, Carmen Bellas, Paloma Martin
The oncogenic capacity of cyclin D1 has long been established in breast cancer. CCND1 amplification has been identified in a subset of patients with poor prognosis, but there are conflicting data regarding the predictive value of cyclin D1 protein overexpression. This study was designed to analyze the expression of cyclin D1 and its correlation with CCND1 amplification and their prognostic implications in invasive breast cancer. By using the tissue microarray technique, we performed an immunohistochemical study of ER, PR, HER2, p53, cyclin D1, Ki67 and p16 in 179 invasive breast carcinoma cases...
2017: PloS One
https://www.readbyqxmd.com/read/29139009/lfm-a13-a-potent-inhibitor-of-polo-like-kinase-inhibits-breast-carcinogenesis-by-suppressing-proliferation-activity-and-inducing-apoptosis-in-breast-tumors-of-mice
#8
Kazim Sahin, Mehmet Tuzcu, Mehmet Yabas, Cemal Orhan, Nurhan Sahin, Ibrahim H Ozercan
The goals of the present study were to define the anticancer activity of LFM-A13 (α-cyano-β-hydroxy-β-methyl-N-(2,5-dibromophenyl)-propenamide), a potent inhibitor of Polo-like kinase (PLK), in a mouse mammary cancer model induced by 7,12-dimethylbenz(a)anthracene (DMBA) in vivo and explore its anticancer mechanism(s). We also examined whether the inhibition of PLK by LFM-A13 would improve the efficiency of paclitaxel in breast cancer growth in vivo. To do this, female BALB/c mice received 1 mg of DMBA once a week for 6 weeks with oral gavage...
November 15, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/29138795/hesperidin-induces-apoptosis-and-g0-g1-arrest-in-human-non-small-cell-lung-cancer-a549-cells
#9
Rongmu Xia, Xin Sheng, Xianlin Xu, Chunbo Yu, Hongling Lu
Lung cancer has high incidence and mortality rates worldwide. In the present study, the mechanisms by which hesperidin decreases the viability and induces the apoptosis of human non-small cell lung cancer (NSCLC) A549 cells were investigated. Initially, MTT and flow cytometric assays were performed to evaluate the effects of hesperidin on the viability and apoptosis of A549 cells and human normal lung epithelial BEAS-2B cells. The results revealed that hesperidin has no negative effects on the human normal lung epithelial BEAS-2B cells and the viability of cells treated with various concentrations of hesperidin was inhibited in a time- and dose-dependent manner compared with the control groups...
November 9, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29138545/activation-of-notch1-signaling-alleviates-dysfunction-of-bone-marrow-derived-mesenchymal-stem-cells-induced-by-cigarette-smoke-extract
#10
Yi Cheng, Wen Gu, Guorui Zhang, Xiaoming Li, Xuejun Guo
Bone marrow-derived mesenchymal stem cells (BM-MSCs) are considered attractive therapeutic agents for the treatment of COPD. However, little is known about the impact of Notch on the proliferation, migration, and survival of MSCs in a cigarette smoke (CS) microenvironment. Here, we used CS extract to mimic the CS microenvironment in vitro, with the intention to investigate the effect of Notch in regulating proliferation, migration, and survival of BM-MSCs. Rat bone marrow mesenchymal stem cells were infected with lentivirus vector containing the intracellular domain of Notch1 (N1ICD) and challenged with CS extract...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29138118/8-cetylberberine-inhibits-growth-of-lung-cancer-in-vitro-and-in-vivo
#11
Yubo Xiao, Cheng Tian, Tao Huang, Bing Han, Meimei Wang, Hang Ma, Zhaoxing Li, Xiaoli Ye, Xuegang Li
AIMS: This study is aimed at detecting the anti-tumor efficacy of a new berberine (BBR) derivative 8-cetylberberine (HBBR), which has a significant improvement in hydrophobicity and pharmacological effects compared to BBR. MAIN METHODS: The human non-small lung cancer cell line A549 and normal human lung epithelial cells (MRC-5) were cultured to observe inhibition in vitro. Cell viability was analyzed via 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay...
November 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/29137335/inhibition-of-cell-cycle-progression-by-the-hydroxytyrosol-cetuximab-combination-yields-enhanced-chemotherapeutic-efficacy-in-colon-cancer-cells
#12
Erika Terzuoli, Ginevra Nannelli, Maria Frosini, Antonio Giachetti, Marina Ziche, Sandra Donnini
Hydroxytyrosol (HT), a polyphenol of olive oil, downregulates epidermal growth factor (EGFR) expression and inhibits cell proliferation in colon cancer (CC) cells, with mechanisms similar to that activated by the EGFR inhibitor, cetuximab. Here, we studied whether HT treatment would enhance the cetuximab inhibitory effects on cell growth in CC cells. HT-cetuximab combination showed greater efficacy in reducing cell growth in HT-29 and WiDr cells at concentrations 10 times lower than when used as single agents...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137223/hormone-induced-dna-damage-response-and-repair-mediated-by-cyclin-d1-in-breast-and-prostate-cancer
#13
REVIEW
Gabriele Di Sante, Agnese Di Rocco, Claudia Pupo, Mathew C Casimiro, Richard G Pestell
Cell cycle control proteins govern events that leads to the production of two identical daughter cells. Distinct sequential temporal phases, Gap 1 (G1), Gap 0 (G0), Synthesis (S), Gap 2 (G2) and Mitosis (M) are negotiated through a series of check points during which the favorability of the local cellular environment is assessed, prior to replicating DNA [1]. Cyclin D1 has been characterized as a key regulatory subunit of the holoenzyme that promotes the G1/S-phase transition through phosphorylating the pRB protein...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29137220/stromal-cyclin-d1-promotes-heterotypic-immune-signaling-and-breast-cancer-growth
#14
Timothy G Pestell, Xuanmao Jiao, Mukesh Kumar, Amy R Peck, Marco Prisco, Shengqiong Deng, Zhiping Li, Adam Ertel, Mathew C Casimiro, Xiaoming Ju, Agnese Di Rocco, Gabriele Di Sante, Sanjay Katiyar, Alison Shupp, Michael P Lisanti, Pooja Jain, Kongming Wu, Hallgeir Rui, Douglas C Hooper, Zuoren Yu, Aaron R Goldman, David W Speicher, Lisa Laury-Kleintop, Richard G Pestell
The cyclin D1 gene encodes the regulatory subunit of a holoenzyme that drives cell autonomous cell cycle progression and proliferation. Herein we show cyclin D1 abundance is increased >30-fold in the stromal fibroblasts of patients with invasive breast cancer, associated with poor outcome. Cyclin D1 transformed hTERT human fibroblast to a cancer-associated fibroblast phenotype. Stromal fibroblast expression of cyclin D1 (cyclin D1(Stroma)) in vivo, enhanced breast epithelial cancer tumor growth, restrained apoptosis, and increased autophagy...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29136951/chemopreventive-effect-of-myricetin-a-natural-occurring-compound-on-colonic-chronic-inflammation-and-inflammation-driven-tumorigenesis-in-mice
#15
Mei-Jia Zhang, Han Su, Jing-Yue Yan, Na Li, Zhi-Yu Song, Huai-Jie Wang, Lian-Guang Huo, Feng Wang, Wan-Sheng Ji, Xian-Jun Qu, Mei-Hua Qu
Myricetin is a flavonoids compound extracted from edible myrica rubra. We aimed to evaluate the efficacy of Myricetin on colonic chronic inflammation and inflammation-driven tumorigenesis in mice. Myricetin was administrated by gavage for 4 consecutive weeks. Mice were sacrificed and the number of colonic polyps was counted. Myricetin significantly inhibited AOM/DSS-induced colitis and colorectal tumorigenesis. Myricetin prevented the incidence of colorectal tumorigenesis and reduced the size of colorectal polyps...
November 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29136769/lncrna-p21-inhibited-the-proliferation-of-osteosarcoma-cells-via-the-mir-130b-pten-akt-signaling-pathway
#16
Weifeng Han, Junpeng Liu
Osteosarcoma (OS) is the most common type of malignant bone tumor in children and adolescents. However, the molecular mechanism underlying OS development is unclear. Here, we investigated the contribution of lncRNA-p21, a novel long non-coding RNA, on OS cell proliferation. Our results demonstrated that the expression of lncRNA-p21 was repressed in OS tissue. Growth curves and the cell colony formation assay showed that lncRNA-p21 significantly inhibited the proliferation of OS cell lines. In addition, the expression of lncRNA-p21 increased the protein levels of proliferation markers, such as Ki-67 and cyclin D1...
November 7, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29135104/clinicopathological-and-prognostic-significance-of-cyclin-d1-amplification-in-patients-with-breast-cancer-a-meta-analysis
#17
Qi He, Jingxun Wu, Xin-Li Liu, Yi-Han Ma, Xiao-Ting Wu, Wen-Yi Wang, Han-Xiang An
PURPOSE: Cyclin D1 plays a critical role in tumorigenesis and the regulation of the G1/S transition in the cell cycle. The relationship between cyclin D1 amplification and clinicopathological parameters in patients with breast cancer remains controversial and its impact on survival outcome is not completely clear. We conducted a meta-analysis to investigate the associations between cyclin D1 gene amplification and certain clinicopathological characteristics and the prognosis in breast cancer...
September 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29135079/cigarette-smoke-extract-and-isoprene-resulted-in-the-induction-of-apoptosis-and-autophagy-in-human-placenta-choriocarcinoma-jeg-3-cells
#18
Hae-Miru Lee, Kyung-Chul Choi
In this study, the effects of cigarette smoke (CS) on the induction of apoptosis via reactive oxygen species (ROS) production and endoplasmic reticulum stress (ER stress) of JEG-3 human choriocarcinoma cells were examined to confirm the relationship between CS and placenta development. Upon TUNEL assay, CS extract (3R4F; 0.3 and 2.1 μM) increased JEG-3 apoptosis. Western blot assay revealed that the protein expressions of p53, Bax, and CCAAT-enhancer-binding protein homologous protein (CHOP) increased, while the levels of Bcl-2 were reduced following CS extract treatment...
November 14, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/29135049/functional-characterization-of-e2f3b-in-human-hepg2-liver-cancer-cell-line
#19
Yujia Lu, Wei Li
E2F3 is a transcription factor that has been shown to be overexpressed in hepatocellular carcinoma (HCC). It is well-known that the E2F3 gene encodes two proteins E2F3a and E2F3b. Therefore, the functions of the two distinct isoforms need to be clarified separately. To characterize the function of E2F3b in HCC, the effects of ectopic expression of E2F3b on cell proliferation, cell cycle, apoptosis and gene expression were investigated. E2F3b promoted G1/S phase transition and markedly increased cell proliferation, but had minor effect on apoptosis...
November 14, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29134746/fenofibrate-induced-ppar-alpha-expression-was-attenuated-by-oestrogen-receptor-alpha-overexpression-in-hep3b-cells
#20
Long-Bin Jeng, Bharath Kumar Velmurugan, Hsi-Hsien Hsu, Su-Ying Wen, Chia-Yao Shen, Chih-Hao Lin, Yueh-Min Lin, Ray-Jade Chen, Wei-Wen Kuo, Chih-Yang Huang
The physiological regulation of Oestrogen receptor α (ERα) and peroxisome proliferator-activated receptor alpha (PPARα) in Hepatocellular carcinoma (HCC) remains unknown. The present study we first treat the cells with fenofibrate and further investigated the possible mechanisms of 17β-estradiol (E2 ) and/or ERα on regulating PPARα expression. We also found higher PPARα expression in the tumor area than adjacent areas and subsequently compared PPARα expression in four different hepatic cancer cell lines...
November 14, 2017: Environmental Toxicology
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