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https://www.readbyqxmd.com/read/28927034/cyclin-d3-deficiency-inhibits-skin-tumor-development-but-does-not-affect-normal-keratinocyte-proliferation
#1
Sung Hyun Lee, Xian Wang, Sun Hye Kim, Yongbaek Kim, Marcelo L Rodriguez-Puebla
Rearrangement and amplification of the D-type cyclin genes have been reported in human cancer. Previous studies have demonstrated that Ras-mediated skin tumorigenesis depends on pathways that act through cyclin D1 and D2; however, the role of cyclin D3 remains unknown. The present study demonstrates that cyclin D3 ablation does not affect keratinocyte proliferation, but instead increases apoptosis levels in the bulge region of the hair follicle. Consequently, cyclin D3 ablation reduces skin papilloma development in a Ras-dependent carcinogenesis model...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28926138/tnfaip8-regulates-hippo-pathway-through-interacting-with-lats1-to-promote-cell-proliferation-and-invasion-in-lung-cancer
#2
Yong Han, ZhongPing Tang, Yue Zhao, Qingchang Li, Enhua Wang
TNFAIP8 is associated with prognosis of several human malignancies. However, the molecular mechanism of TNFAIP8 in lung cancer remains unknown. In our study, we found TNFAIP8 could enhance TEAD luciferase activity and inhibits the activity of Hippo pathway. TNFAIP8 also increased cyclin D1, CDK6 and decreased p27 in lung cancer cells. In addition, TNFAIP8 increased total YAP protein and promoted nuclear localization of YAP. More importantly, YAP depletion blocked the role of TNFAIP8 on cell cycle-related proteins and TEAD luciferase activity, revealing that TNFAIP8 regulates Hippo pathway in a YAP-dependend manner...
September 19, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28912086/g-protein-coupled-receptor-kinase-4-induced-cellular-senescence-and-its-senescence-associated-gene-expression-profiling
#3
Pingping Xiao, Xishi Huang, Lanzhen Huang, Jing Yang, Ang Li, Ke Shen, Philip B Wedegaertner, Xiaoshan Jiang
Senescent cells have lost their capacity for proliferation and manifest as irreversibly in cell cycle arrest. Many membrane receptors, including G protein-coupled receptors (GPCRs), initiate a variety of intracellular signaling cascades modulating cell division and potentially play roles in triggering cellular senescence response. GPCR kinases (GRKs) belong to a family of serine/threonine kinases. Although their role in homologous desensitization of activated GPCRs is well established, the involvement of the kinases in cell proliferation is still largely unknown...
September 11, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28905990/the-mtor-kinase-inhibitor-everolimus-synergistically-enhances-the-anti-tumor-effect-of-the-bruton-s-tyrosine-kinase-btk-inhibitor-pls-123-on-mantle-cell-lymphoma
#4
Jiao Li, Xiaogan Wang, Yan Xie, Zhitao Ying, Weiping Liu, Lingyan Ping, Chen Zhang, Zhengying Pan, Ning Ding, Yuqin Song, Jun Zhu
Mantle cell lymphoma (MCL) is an aggressive and incurable malignant disease. Despite of general chemotherapy, relapse and mortality are common, highlighting the need for the development of novel targeted drugs or combination of therapeutic regimens. Recently, several drugs that target the B-cell receptor (BCR) signaling pathway, especially the Bruton's tyrosine kinase (BTK) inhibitor ibrutinib, have demonstrated notable therapeutic effects in relapsed/refractory patients, which indicate that pharmacological inhibition of BCR pathway holds promise in MCL treatment...
September 14, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28903422/cdk4-6-inhibition-is-more-active-against-the-glioblastoma-proneural-subtype
#5
Ming Li, Aizhen Xiao, Desiree Floyd, Inan Olmez, Jeongwu Lee, Jakub Godlewski, Agnieszka Bronisz, Krishna P L Bhat, Erik P Sulman, Ichiro Nakano, Benjamin Purow
Glioblastoma (GBM) is the most common and lethal brain tumor. Gene expression profiling has classified GBM into distinct subtypes, including proneural, mesenchymal, and classical, and identifying therapeutic vulnerabilities of these subtypes is an extremely high priority. We leveraged The Cancer Genome Atlas (TCGA) data, in particular for microRNA expression, to seek druggable core pathways in GBM. The E2F1-regulated miR-17˜92 cluster and its analogs are shown to be highly expressed in proneural GBM and in GSC lines, suggesting the E2F cell cycle pathway might be a key driver in proneural GBM...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28893210/distinct-molecular-subtypes-of-uterine-leiomyosarcoma-respond-differently-to-chemotherapy-treatment
#6
Yang An, Shuzhen Wang, Songlin Li, Lulu Zhang, Dayong Wang, Haojie Wang, Shibai Zhu, Wan Zhu, Yongqiang Li, Wenwu Chen, Shaoping Ji, Xiangqian Guo
BACKGROUND: Uterine leiomyosarcoma (ULMS) is an aggressive form of soft tissue tumors. The molecular heterogeneity and pathogenesis of ULMS are not well understood. METHODS: Expression profiling data were used to determine the possibility and optimal number of ULMS molecular subtypes. Next, clinicopathological characters and molecular pathways were analyzed in each subtype to prospect the clinical applications and progression mechanisms of ULMS. RESULTS: Two distinct molecular subtypes of ULMS were defined based on different gene expression signatures...
September 11, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28879492/molecular-modeling-and-structure-based-drug-discovery-approach-reveals-protein-kinases-as-off-targets-for-novel-anticancer-drug-rh1
#7
Pramodkumar P Gupta, Virupaksha A Bastikar, Dalius Kuciauskas, Shanker Lal Kothari, Jonas Cicenas, Mindaugas Valius
Potential drug target identification and mechanism of action is an important step in drug discovery process, which can be achieved by biochemical methods, genetic interactions or computational conjectures. Sometimes more than one approach is implemented to mine out the potential drug target and characterize the on-target or off-target effects. A novel anticancer agent RH1 is designed as pro-drug to be activated by NQO1, an enzyme overexpressed in many types of tumors. However, increasing data show that RH1 can affect cells in NQO1-independent fashion...
September 6, 2017: Medical Oncology
https://www.readbyqxmd.com/read/28861128/pyrosequencing-quantified-methylation-level-of-mir-124-predicts-shorter-survival-for-patients-with-myelodysplastic-syndrome
#8
Hong Wang, Tong-Tong Zhang, Song Jin, Hong Liu, Xiang Zhang, Chang-Geng Ruan, De-Pei Wu, Yue Han, Xiao-Qin Wang
BACKGROUND: Aberrant CpG island methylation has been increasingly recognized as a common event in myelodysplastic syndrome (MDS). To date, most of the previous studies of miR-124 in MDS have focused on epigenetic changes and little is known about the underlying mechanism through which miR-124 regulates CDK6 expression. RESULTS: In the present study, we employed pyrosequencing analysis to quantify the methylation levels of upstream regions of the miR-124 genes (miR-124-1, miR-124-2 and miR-124-3) in 56 primary MDS patients...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28858834/curcumin-synthesis-optimization-and-in-silico-interaction-with-cyclin-dependent-kinase
#9
Mahmood Ahmed, Muhammad Abdul Qadir, Muhammad Imtiaz Shafiq, Muhammad Muddassar, Abdul Hameed, Muhammad Nadeem Arshad, Abdullah M Asiri
Curcumin is a natural product with enormous biological potential. In this study, curcumin synthesis was revisited using different reaction solvents, a catalyst (n-butylamine) and a water scavenger [(n-BuO)3B], to develop the optimal procedure for its rapid acquisition. During synthesis, solvent choice was found to be an important parameter for better curcumin yield and high purity. In a typical reaction, acetyl acetone was treated with boron trioxide, followed by condensation with vanillin in the presence of tri-n-butyl borate as water scavenger and n-butylamine as catalyst at 80 °C in ethyl acetate to afford curcumin...
September 1, 2017: Acta Pharmaceutica
https://www.readbyqxmd.com/read/28856793/identification-of-a-triterpenoid-as-a-novel-ppar%C3%AE-activator-derived-from-formosan-plants
#10
Jing-Ru Weng, Li-Yuan Bai, Wei-Yu Lin
Peroxisome proliferator-activated receptor γ (PPARγ), one of the transcription factors that regulate lipid metabolism and energy use in tumor cells, is a viable target for cancer therapy. In our search for potential PPARγ activator, extracts from five Formosan plants were tested. Among them, Momordica charantia L. showed the highest ability to activate PPARγ, which led us to identify its potential constituents. Among the seven compounds isolated from M. charantia, a triterpenoid, 5β,19-epoxy-19-methoxycucurbita-6,23-dien-3β,25-diol (compound 1), was identified as a PPARγ activator with an IC50 of 10 μM in breast cancer MCF-7 cells...
August 30, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28856557/endothelial-cells-promote-formation-of-medulloblastoma-stem-like-cells-via-notch-pathway-activation
#11
Yong Wang, Yushe Wang, Hang Chen, Qinghua Liang
The aim of the study is to investigate whether endothelial cells (ECs) promoted the capacity of stem-like cell formation in medulloblastoma (MB) and whether the mechanism of action was associated with mediation of Notch signaling pathway. Co-culture experiment was conducted to particularly understand the potential role of ECs in promoting phenotype and gene expression of MB stem-like cells. Self-renewal capacity and tumor cell population were measured by sphere-forming assay and flow cytometry, respectively...
August 30, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28843701/fine-particulate-matter-exposure-induces-cell-cycle-arrest-and-inhibits-migration-and-invasion-of-human-extravillous-trophoblast-as-determined-by-an-itraq-based-quantitative-proteomics-strategy
#12
Zhe Qin, Haiyan Hou, Feng Fu, Jun Wu, Bin Han, Wen Yang, Liwen Zhang, Jin Cao, Xiaohan Jin, Shixiang Cheng, Zhen Yang, Min Zhang, Xiaoxia Lan, Ting Yao, Qulong Dong, Siyu Wu, Jingjing Zhang, Zhongwei Xu, Yuming Li, Yaqiong Chen
Long-term exposure to fine particulate matter (PM2.5) may cause adverse pregnancy outcomes but the mechanisms are not clear. Our research confirms that PM2.5 induced DNA damage, and inhibited cell proliferation in HTR-8/SVneo cells, presenting in a dose- and time-dependent manners. Using quantitative proteomics, the 182 and 486 differentially expressed proteins in cells treated with 120μgml(-1) PM2.5 for 24 and 48h were involved in many critical biological processes, including of cell proliferation, response to DNA damage, regulation of small GTPase mediated signal transduction, and etc...
August 24, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28815764/aligning-digital-cd8-scoring-and-targeted-next-generation-sequencing-with-pd-l1-expression-a-pragmatic-approach-in-early-stage-squamous-cell-lung-carcinoma
#13
Esther Conde, Alejandra Caminoa, Carolina Dominguez, Antonio Calles, Stefan Walter, Barbara Angulo, Elena Sánchez, Marta Alonso, Luis Jimenez, Luis Madrigal, Florentino Hernando, Julian Sanz-Ortega, Beatriz Jimenez, Pilar Garrido, Luis Paz-Ares, Javier de Castro, Susana Hernandez, Fernando Lopez-Rios
AIMS: To study PD-L1 expression, tumour-infiltrating T lymphocytes (TILs) and the molecular context in patients with early-stage squamous cell lung carcinomas (SCCs). METHODS AND RESULTS: The study included samples from 40 patients (discovery cohort) and 29 patients (validation cohort) diagnosed with early-stage SCC. PD-L1 immunohistochemistry (IHC) was performed with three commercially available clones (E1L3N, SP263 and SP142). CD8(+) TILs were scored with a digital algorithm...
August 16, 2017: Histopathology
https://www.readbyqxmd.com/read/28800786/knockdown-of-long-noncoding-rna-linc0000125-suppresses-cellular-proliferation-and-invasion-in-glioma-cells-by-regulating-mir-4775
#14
Zhankun Zhu, Jinhua Dai, Yufeng Liao, Jianbo Ma, Wei Zhou
Long noncoding RNAs (lncRNAs) play an important role in various biological properties of glioma cells. Herein, we aimedto elucidate the function and the possible molecular mechanisms of long intergenic non-coding RNA 152 (LINC00152) in glioma cells. Relative expressions of LINC00152, miR-4775 and CDK6 in U-118 MG cells were regulated by transfections. Thereafter, cell viability, migration, invasion and apoptosis were analyzed by CCK8, Transwell and flow cytometry assays. Dual-luciferase reporter assay was conducted to validate the target genes of LINC00152 and miR-4775...
August 11, 2017: Oncology Research
https://www.readbyqxmd.com/read/28799567/identification-of-breast-cancer-mechanism-based-on-weighted-gene-coexpression-network-analysis
#15
X Guo, H Xiao, S Guo, L Dong, J Chen
Our gene expression-profiling analysis aimed to explain the mechanism of breast cancer development by identifying key pathways and constructing networks of related transcription factors (TFs) and microRNAs (miRNAs) in breast cancer tissues. Gene expression profiles of normal and breast cancer tissues were downloaded to identify differentially expressed genes (DEGs). Coexpression modules were explored using weighted gene coexpression network analysis (WGCNA). Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses were performed to discover the enriched functionally associated gene groups and define pathways in breast cancer, respectively...
August 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28751617/cdk4-6-inhibition-is-more-active-against-the-glioblastoma-proneural-subtype
#16
Ming Li, Aizhen Xiao, Desiree Floyd, Inan Olmez, Jeongwu Lee, Jakub Godlewski, Agnieszka Bronisz, Krishna P L Bhat, Erik P Sulman, Ichiro Nakano, Benjamin Purow
Glioblastoma (GBM) is the most common and lethal brain tumor. Gene expression profiling has classified GBM into distinct subtypes, including proneural, mesenchymal, and classical, and identifying therapeutic vulnerabilities of these subtypes is an extremely high priority. We leveraged The Cancer Genome Atlas (TCGA) data, in particular for microRNA expression, to seek druggable core pathways in GBM. The E2F1-regulated miR-17~92 cluster and its analogs are shown to be highly expressed in proneural GBM and in GSC lines, suggesting the E2F cell cycle pathway might be a key driver in proneural GBM...
July 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28743112/microrna-302b-3p-suppresses-cell-proliferation-through-akt-pathway-by-targeting-igf-1r-in-human-gastric-cancer
#17
Bo Guo, Zhenghao Zhao, Zhen Wang, Qian Li, Xiaofei Wang, Wenjing Wang, Tusheng Song, Che Huang
BACKGROUND/AIMS: MiR-302b is a major microRNA found in human embryonic stem cells and induced pluripotent stem cells. However, its function in gastric cancer progression remains unclear. METHODS: Quantitative reverse transcription-PCR was performed to detect the expression levels of miR-302b-3p in gastric cancer tissues. MTT, colony formation, and flow cytometer analyses were conducted to explore the function of miR-302b-3p in MKN-45/SGC-7901 cells. A dual-luciferase reporter was used to validate the bioinformatics-predicted target gene of miR-302b-3p...
July 25, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28738959/-study-on-the-effect-of-immunosuppressive-agent-fk506-on-growth-and-migration-of-lung-cancer-cell
#18
Yongwen Li, Hongbing Zhang, Ying Li, Chenlong Zhao, Weiting Li, Hongyu Liu, Jianping Wen, Jun Chen
BACKGROUND: FK506, also named tacrolimus, a new macrolide immunosuppressive agent, has been shown to possess anti-proliferation activities in some cancer cells. The aim of this study was to investigate the effect of FK506 on the cell proliferation and migration of lung cancer cell lines and its mechanism. METHODS: A549 and H1299 cell lines were cultured in vitro. The effect of FK506 on cell viability and DNA synthesis ability of A549 and H1299 were measured by CCK-8 assay and EDU-labeling assay, respectively...
July 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28732387/the-micrornas-mir-200b-3p-and-mir-429-5p-target-the-limk1-cfl1-pathway-to-inhibit-growth-and-motility-of-breast-cancer-cells
#19
Dengfeng Li, Hong Wang, Hongming Song, Hui Xu, Bingkun Zhao, Chenyang Wu, Jiashu Hu, Tianqi Wu, Dan Xie, Junyong Zhao, Qiang Shen, Lin Fang
Triple-negative breast cancer (TNBC) has the worst prognosis of all subtypes of breast cancer (BC), with limited options for conventional therapy and no targeted therapies. MicroRNAs (miRNAs) are small noncoding RNAs that negatively regulate gene expression. In this study, we aimed to determine whether two members of the miR-200 family, miR-200b-3p and miR-429-5p, are involved in BC cell proliferation and motility and to elucidate their target genes and pathways. We performed a meta-analysis that reveals down-regulated expression of miR-200b-3p and miR-429-5p in BC tissues and cell lines, consistent with a lower expression of miR-200b-3p and miR-429-5p in MDA-MB-231 and HCC1937 cells than in MCF-7 and MCF-10 cells...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28718369/mir-143-inhibits-cell-proliferation-and-invasion-by-targeting-dnmt3a-in-gastric-cancer
#20
Quan Zhang, Yong Feng, Ping Liu, Jing Yang
Increasing evidence has suggested that MircroRNAs (miRNAs) dysregulated in pathogenesis and tumorigenicity in human cancers including gastric cancer (GC). MiR-143 had been reported to function as tumor suppressor in GC progression, however, the underlying function of miR-143 in GC still need to be well known. In the study, we revealed that miR-143 was significantly down-regulated in GC cell lines. Upregulation of miR-143 inhibited cell proliferation, invasion, S phase cell proportion and cell cycle related protein levels of Cyclin D1, CDK4 and CDK6 in GC...
July 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
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