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G1/S transition

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https://www.readbyqxmd.com/read/29228553/activation-of-nrf2-mediated-anti-oxidant-genes-by-antrodin-c-prevents-hyperglycemia-induced-senescence-and-apoptosis-in-human-endothelial-cells
#1
Kumar K J Senthil, Vani M Gokila, Sheng-Yang Wang
In the present study, we investigated the effects of antrodin C (ADC), a maleimide derivative isolated from mycelia of Antrodia cinnamomea, on high glucose (HG, 30 mM)-accelerated endothelial dysfunction in vitro. HG-induced cytotoxicity in human umbilical vein endothelial cells (HUVECs) was significantly ameliorated by ADC. In addition, treatment with ADC significantly prevented HG-induced senescence, growth arrest at the G1-S transition phase and apoptosis in HUVECs. Moreover, the increased level of intracellular reactive oxygen species (ROS) under HG condition was significantly ameliorated by ADC...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29207336/cytotoxicity-molecular-modeling-cell-cycle-arrest-and-apoptotic-induction-induced-by-novel-tetrahydro-1-2-4-triazolo-3-4-a-isoquinoline-chalcones
#2
Magda F Mohamed, Hamdi M Hassaneen, Ismail A Abdelhamid
Novel tetrahydro-[1,2,4]triazolo[3,4-a]isoquinolin-3-yl)-3-arylprop-2-en-1-one derivatives were synthesized and their structures were confirmed by different spectral tools. Cytotoxicity test revealed that some compounds exhibited strong to moderate effect, while others showed weak action against different cancer cell lines (MCF7, A549, HCT116, and Hepg2). Breast carcinoma revealed higher sensitivity toward all derivatives especially compounds 5 and 8 which offered the lowest IC50 values (50.05, and 27.15 μg/ml) respectively, relative to the positive control 5-fluorouracil (5-FU) (IC50 = 178 μg/ml)...
November 21, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29207147/effect-and-mechanism-of-rnai-targeting-wwtr1-on-biological-activity-of-gastric-cancer-cells-sgc7901
#3
Yuan Li, Fang-Liang Yang, Chun-Fu Zhu, Li-Ming Tang
Gastric cancer (GC) is one of the most common malignancies in the world. It is essential to develop novel targets and therapeutic approaches for GC, which requires identification of novel functional molecules. WW‑domain containing transcription regulator 1 (WWTR1) may activate many transcriptional factors and exhibit an important role in the development of various tissues in mammals. The results of the present study demonstrated that mRNA and protein levels of WWTR1 are increased in GC tissues and cell lines...
December 5, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29199958/last-a-c-myc-inducible-long-noncoding-rna-cooperates-with-cnbp-to-promote-ccnd1-mrna-stability-in-human-cells
#4
Limian Cao, Pengfei Zhang, Jinming Li, Mian Wu
Cyclin D1 is a critical regulator of cell cycle progression and works at the G1 to S-phase transition. Here, we report the isolation and characterization of the novel c-Myc-regulated lncRNA LAST (LncRNA-Assisted Stabilization of Transcripts), which acts as a CCND1 mRNA stabilizer. Mechanistically, LAST was shown to cooperate with CNBP to bind to the 5'UTR of CCND1 mRNA to protect against possible nuclease targeting. In addition, data from CNBP RIP-seq and LAST RNA-seq showed that CCND1 mRNA might not be the only target of LAST and CNBP; three additional mRNAs were shown to be post-transcriptional targets of LAST and CNBP...
December 4, 2017: ELife
https://www.readbyqxmd.com/read/29198777/the-cyclin-dependent-kinase-2-cdk2-mediates-hematopoiesis-through-g1-to-s-transition-in-chinese-mitten-crab-eriocheir-sinensis
#5
Bin Yang, Yunke Jia, Zhihao Jia, Weilin Wang, Xiaorui Song, Yannan Li, Qilin Yi, Lingling Wang, Linsheng Song
Cyclin-dependent kinases (CDKs), a family of cell cycle-related serine/threonine kinases, participate in various biological processes, and play crucial roles in the innate immunity. In the present study, a CDK2 (designed as EsCDK2) with a serine/threonine protein kinase catalytic domain was identified from Chinese mitten crab (Eriocheir sinensis). The full-length cDNA sequence of EsCDK2 was of 2405 bp with an open reading frame (ORF) of 909 bp. EsCDK2 shared 66%-81% sequence similarities with previously identified CDK2s...
November 30, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29193696/a-wake-up-call-to-quiescent-cancer-cells-potential-use-of-dyrk1b-inhibitors-in-cancer-therapy
#6
Walter Becker
Non-dividing cancer cells are relatively resistant to chemotherapeutic drugs and environmental stress factors. Promoting cell cycle re-entry of quiescent cancer cells is a potential strategy to enhance the cytotoxicity of agents that target cycling cells. It is therefore important to elucidate the mechanisms by which these cells are maintained in the quiescent state. The protein kinase DYRK1B is overexpressed in a subset of cancers and maintains cellular quiescence by counteracting G0 /G1 - S phase transition...
November 28, 2017: FEBS Journal
https://www.readbyqxmd.com/read/29180328/-small-interfering-rna-mediated-%C3%AE-enolase-knockdown-suppresses-glycolysis-and-proliferation-of-human-glioma-u251-cells-in-vitro
#7
Qi-Sheng Luo, Huang-de Fu, Hai-Neng Huang, Hua-Dong Huang, Kun-Xiang Luo, Chuan-Yu Li, Cheng-Jian Qin, Xue-Yu Li, Hong-Cheng Luo, Jun-Li Wang, Qian-Li Tang
OBJECTIVE: To investigate the role of α-enolase (ENO1) in regulating glucose metabolism and cell growth in human glioma cells. METHODS: Glucose uptake and lactate generation were assessed to evaluate the changes in glucose metabolism in human glioma U251 cells with small interfering RNA (siRNA)-mediated ENO1 knockdown. MTT assay and 5-ethynyl-2'-deoxyuridine (EdU) staining were used to examine the cell growth and cell cycle changes following siRNA transfection of the cells...
November 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/29174628/overexpression-of-muc13-a-poor-prognostic-predictor-promotes-cell-growth-by-activating-wnt-signaling-in-hepatocellular-carcinoma
#8
Yongdong Dai, Lulu Liu, Tingting Zeng, Jian-Zhong Liang, Ye Song, Kai Chen, Yan Li, Leilei Chen, Ying-Hui Zhu, Jiangchao Li, Yan Li, Dan Xie, Yun-Fei Yuan, Xin-Yuan Guan
Recently RNA sequencing revealed high MUC13 expression in hepatocellular carcinoma (HCC) tissues. To understand the clinicopathological significance of MUC13 in HCC, quantitative PCR and immunohistochemistry were used to detect its expression in paired tumor tissues and nontumor tissues. The onco-protein role of MUC13 was determined by in vitro and in vivo assays. Overexpression of MUC13 was detected in 74 of 168 (44%) primary HCC cases and was significantly associated with tumor size (P = 0.027), stage (P = 0...
November 21, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29169176/ablation-of-atg4b-suppressed-autophagy-and-activated-ampk-for-cell-cycle-arrest-in-cancer-cells
#9
Pei-Feng Liu, Chien-Jen Hsu, Wei-Lun Tsai, Jin-Shiung Cheng, Jih-Jung Chen, I-Fei Huang, Ho-Hsing Tseng, Hsueh-Wei Chang, Chih-Wen Shu
BACKGROUND/AIMS: ATG4B is a cysteine protease required for autophagy, which is a cellular catabolic pathway involved in energy balance. ATG4B expression is elevated during tumor growth in certain types of cancer, suggesting that ATG4B is an attractive target for cancer therapy. However, little is known about the mechanisms through which ATG4B deprivation suppresses the growth of cancer cells. METHODS: Cancer cells were transfected with either siRNA against ATG4B or an expression vector encoding wild-type ATG4BWT or encoding catalytic mutant ATG4BC74A to determine cell cycle progression by propidium iodide staining or by BrdU incorporation assay using flow cytometry...
November 23, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29163810/myeloid-ecotropic-viral-integration-site-1-inhibits-cell-proliferation-invasion-or-migration-in-human-gastric-cancer
#10
Fei Song, Hong Wang, Yingying Wang
Myeloid ecotropic viral integration site 1 (MEIS1) has been identified to be a potential tumor suppressor in some cancers. However, the mechanisms underlying MEIS1-induced cancer development and progression were not clear. Here, we investigated the expression and role of MEIS1 in gastric cancer. In vivo, we analyzed tumor growth using nude mice model. In the present study, MEIS1 expression was obviously decreased in GC cell lines compared with that in normal gastric cell lines (all p<0.001). MEIS1 overexpression inhibited cell proliferation and G1/S transition accompanied by decreased Cyclin D1 and Cyclin A expression...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29162134/serum-thymidine-kinase-1-activity-as-a-pharmacodynamic-marker-of-cyclin-dependent-kinase-4-6-inhibition-in-patients-with-early-stage-breast-cancer-receiving-neoadjuvant-palbociclib
#11
Nusayba Bagegni, Shana Thomas, Ning Liu, Jingqin Luo, Jeremy Hoog, Donald W Northfelt, Matthew P Goetz, Andres Forero, Mattias Bergqvist, Jakob Karen, Magnus Neumüller, Edward M Suh, Zhanfang Guo, Kiran Vij, Souzan Sanati, Matthew Ellis, Cynthia X Ma
BACKGROUND: Thymidine kinase 1 (TK1) is a cell cycle-regulated enzyme with peak expression in the S phase during DNA synthesis, and it is an attractive biomarker of cell proliferation. Serum TK1 activity has demonstrated prognostic value in patients with early-stage breast cancer. Because cyclin-dependent kinase 4/6 (CDK4/6) inhibitors prevent G1/S transition, we hypothesized that serum TK1 could be a biomarker for CDK4/6 inhibitors. We examined the drug-induced change in serum TK1 as well as its correlation with change in tumor Ki-67 levels in patients enrolled in the NeoPalAna trial (ClinicalTrials...
November 21, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/29159895/proliferation-and-differentiation-of-mesenchymal-stem-cells-on-scaffolds-containing-chitosan-calcium-polyphosphate-and-pigeonite-for-bone-tissue-engineering
#12
S Dhivya, A Keshav Narayan, R Logith Kumar, S Viji Chandran, M Vairamani, N Selvamurugan
OBJECTIVES: Treatment of critical-sized bone defects with cells and biomaterials offers an efficient alternative to traditional bone grafts. Chitosan (CS) is a natural biopolymer that acts as a scaffold in bone tissue engineering (BTE). Polyphosphate (PolyP), recently identified as an inorganic polymer, acts as a potential bone morphogenetic material, whereas pigeonite (Pg) is a novel iron-containing ceramic. In this study, we prepared and characterized scaffolds containing CS, calcium polyphosphate (CaPP) and Pg particles for bone formation in vitro and in vivo...
November 21, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/29159499/redistribution-of-cell-cycle-by-arsenic-trioxide-is-associated-with-demethylation-and-expression-changes-of-cell-cycle-related-genes-in-acute-promyelocytic-leukemia-cell-line-nb4
#13
Saeed Hassani, Ali Khaleghian, Shahin Ahmadian, Shaban Alizadeh, Kamran Alimoghaddam, Ardeshir Ghavamzadeh, Seyed H Ghaffari
PML-RARα perturbs the normal epigenetic setting, which is essential to oncogenic transformation in acute promyelocytic leukemia (APL). Transcription induction and recruitment of DNA methyltransferases (DNMTs) by PML-RARα and subsequent hypermethylation are components of this perturbation. Arsenic trioxide (ATO), an important drug in APL therapy, concurrent with degradation of PML-RARα induces cell cycle change and apoptosis. How ATO causes cell cycle alteration has remained largely unexplained. Here, we investigated DNA methylation patterns of cell cycle regulatory genes promoters, the effects of ATO on the methylated genes and cell cycle distribution in an APL cell line, NB4...
November 20, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/29157111/hmga2-cooperates-with-either-p27-kip1-deficiency-or-cdk4-r24c-mutation-in-pituitary-tumorigenesis
#14
Monica Fedele, Orlando Paciello, Davide De Biase, Mario Monaco, Gennaro Chiappetta, Michela Vitiello, Antonio Barbieri, Domenica Rea, Antonio Luciano, Serenella Papparella, Claudio Arra, Alfredo Fusco
We have previously reported a critical role of HMGA proteins in pituitary tumorigenesis since either the Hmga1 or Hmga2 gene overexpression/activation induces the development of mixed growth hormone/prolactin cell pituitary adenomas by activating the E2F transcription factor 1, and then enhancing the G1/S transition of the cell cycle. Consistently, amplification and overexpression of the HMGA2 gene was found in human pituitary prolactinomas. Since impairment of the cell cycle control represents a feature of experimental and human pituitary adenomas, we have investigated the possible synergism between the alterations of other cell cycle regulators, such as p27 deficiency or Cdk4(R24C) mutation, with Hmga2 overexpression in pituitary tumorigenesis...
November 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/29156693/cdk3-target-of-mir-4469-suppresses-breast-cancer-metastasis-via-inhibiting-wnt-%C3%AE-catenin-pathway
#15
Ting Cao, Tian Xiao, Guanqun Huang, Yafei Xu, Joe Jiang Zhu, Kaixin Wang, Wencai Ye, Hong Guan, Jinsong He, Duo Zheng
Cyclin-dependent kinase 3 (CDK3), a member of CDK family, is involved in G0/G1 and G1/S cell cycle transitions. Although several researchers discovered that CDK3 related to cell growth in some kinds of cancer, the functions of CDK3 during tumor development remains unclear. Here, we first found that the expression of CDK3 was higher in primary tumors of non-metastatic breast cancer compared with those in metastatic breast cancer. Overexpression of CDK3 suppressed cell migration and invasion of breast cancer cells, and decreased the metastasis in nude mice...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29148101/homeobox-protein-msx-1-inhibits-expression-of-bone-morphogenetic-protein-2-bone-morphogenetic-protein-4-and-lymphoid-enhancer-binding-factor-1-via-wnt-%C3%AE-catenin-signaling-to-prevent-differentiation-of-dental-mesenchymal-cells-during-the-late-bell-stage
#16
Xiao-Yu Feng, Xiao-Shan Wu, Jin-Song Wang, Chun-Mei Zhang, Song-Lin Wang
Homeobox protein MSX-1 (hereafter referred to as MSX-1) is essential for early tooth-germ development. Tooth-germ development is arrested at bud stage in Msx1 knockout mice, which prompted us to study the functions of MSX-1 beyond this stage. Here, we investigated the roles of MSX-1 during late bell stage. Mesenchymal cells of the mandibular first molar were isolated from mice at embryonic day (E)17.5 and cultured in vitro. We determined the expression levels of β-catenin, bone morphogenetic protein 2 (Bmp2), Bmp4, and lymphoid enhancer-binding factor 1 (Lef1) after knockdown or overexpression of Msx1...
November 17, 2017: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/29138985/effects-of-microrna-708-on-epithelial-mesenchymal-transition-cell-proliferation-and-apoptosis-in-melanoma-cells-by-targeting-lef1-through-the-wnt-signaling-pathway
#17
Xiao-Fei Song, Qi-Hua Wang, Ran Huo
This study was conducted in order to elucidate the role microRNA-708 (miR-708) plays between proliferation, invasion, migration, and epithelial-mesenchymal transition (EMT) involving melanoma cells by targeting using LEF1 through the Wnt signaling pathway. Male Kunming mice were selected and subsequently divided into normal and model groups to take part in this study. Following cell line selection, the B16 cells with the highest miR-708 expression were selected and assigned into the control, blank, negative control (NC), miR-708 mimic, miR-708 inhibitor, siRNA-LEF1, and miR-708 inhibitor + siRNA-LEF1 groups...
November 14, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29137223/hormone-induced-dna-damage-response-and-repair-mediated-by-cyclin-d1-in-breast-and-prostate-cancer
#18
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/29135104/clinicopathological-and-prognostic-significance-of-cyclin-d1-amplification-in-patients-with-breast-cancer-a-meta-analysis
#19
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/29135049/functional-characterization-of-e2f3b-in-human-hepg2-liver-cancer-cell-line
#20
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
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