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Cell Cycle

Xuanxuan Wang, Hai Liu, Liming Shi, Xiaoli Yu, Yanjun Gu, Xiaonan Sun
LncRNA in non-homologous end joining (NHEJ) pathway 1 (LINP1) is an lncRNA which promotes therapeutic resistance in triple-negative breast cancer (TNBC). However, the expression and function of LINP1 in cervical cancer is not yet well-understood. In this study, we evaluated the expression levels of LINP1 in tumor tissues and cell lines of cervical cancer. We found that LINP1 associates with NHEJ proteins (Ku80 and DNA-PKcs). LINP1 translocates from cytosol to nucleus in response to irradiation. In addition, LINP1 knockdown significantly increases the levels of cleaved caspase3 and PARP, leading to enhanced cell apoptosis after ionizing radiation (IR)...
March 12, 2018: Cell Cycle
Elisabetta de Alteriis, Fabrizio Cartenì, Palma Parascandola, Jacinta Serpa, Stefano Mazzoleni
The mechanisms beyond the Warburg effect in proliferative mammalian cells, as well as for the similar Crabtree effect in the yeast Saccharomyces cerevisiae, are still a matter of debate: why do cells shift from the energy-efficient respiration to the energy-inefficient fermentation at high sugar concentration? This review reports on the strong similarities of these phenomena in both cell types, discusses the current ideas, and provides a novel interpretation of their common functional mechanism in a dynamic perspective...
March 6, 2018: Cell Cycle
Jacqueline Trouillas, Gérald Raverot
No abstract text is available yet for this article.
March 5, 2018: Cell Cycle
Dandan Chen, Ping Tang, Linxiang Liu, Fang Wang, Haizhou Xing, Ling Sun, Zhongxing Jiang
This study aims to explore the effect of bone marrow mesenchymal stem cells (BMSCs) on MM development and the underlying mechanism. BMSCs from C57BL/6 J mice were isolated and cultured for subsequent experiments. Additionally, a series of in vitro transwell co-culture assays were performed to explore the effect of BMSCs on the growth of 5TGM1 and CD4+ T cells. Furthermore, a 5TGM1-induced MM mice model was established. Moreover, PD-L1 shRNA was transfected into BMSCs to investigate whether PD-1/PD-L1 pathway involved in BMSCs-mediated regulation of T cells and MM growth...
March 1, 2018: Cell Cycle
Hailun Zheng, Xiquan Ke, Dapeng Li, Qiangwu Wang, Jianchao Wang, Xiaoyang Liu, Min Deng, Xiaojing Deng, Yongju Xue, Yu Zhu, Qizhi Wang
Hepatocellular carcinoma (HCC) is one of the most common causes of cancer-related death worldwide. In China, the situation is even worse as cancer incidence and mortality continue to increase rapidly. Although tremendous progress has been made toward HCC treatments, the benefits for liver cancer patients are still limited. Therefore, it is necessary to identify and develop novel therapeutic methods. Neuronally expressed developmentally downregulated 4 (NEDD4), an E3 ubiquitin ligase, plays a critical role in the development and progression of various types of human cancers...
February 26, 2018: Cell Cycle
Xianmin Mu, Wei Shi, Yue Xu, Che Xu, Ting Zhao, Biao Geng, Jing Yang, Jinshun Pan, Shi Hu, Chen Zhang, Juan Zhang, Chao Wang, Jiajia Shen, Yin Che, Zheng Liu, Yuanfang Lv, Hao Wen, Qiang You
Tumor-associated macrophages (TAM) are prominent components of tumor microenvironment (TME) and capable of promoting cancer progression. However, the mechanisms for the formation of M2-like TAMs remain enigmatic. Here, we show that lactate is a pivotal oncometabolite in the TME that drives macrophage M2-polarization to promote breast cancer proliferation, migration, and angiogenesis. In addition, we identified that the activation of ERK/ STAT3, major signaling molecules in the lactate signaling pathway, deepens our molecular understanding of how lactate educates TAMs...
February 22, 2018: Cell Cycle
Amy Ferreccio, Julie Mathieu, Damien Detraux, Somasundaram Logeshwaran, Christopher Cavanaugh, Bryce Sopher, Karin Fischer, Thomas Bello, Assis M Hussein, Shiri Levy, Savannah Cook, Sonia B Sidhu, Filippo Artoni, Nathan J Palpant, Hans Reinecke, Yuliang Wang, Patrick Paddison, Charles Murry, Suman Jayadev, Carol Ware, Hannele Ruohola-Baker
To easily edit the genome of naïve human embryonic stem cells (hESC), we introduced a dual cassette encoding an inducible Cas9 into the AAVS1 site of naïve hESC (iCas9). The iCas9 line retained karyotypic stability, expression of pluripotency markers, differentiation potential, and stability in 5iLA and EPS pluripotency conditions. The iCas9 line induced efficient homology-directed repair (HDR) and non-homologous end joining (NHEJ) based mutations through CRISPR-Cas9 system. We utilized the iCas9 line to study the epigenetic regulator, PRC2 in early human pluripotency...
February 22, 2018: Cell Cycle
Simone Fulda
Necroptosis represents a form of programmed cell death that can be engaged by various upstream signals, for example by ligation of death receptors, by viral sensors or by pattern recognition receptors. It depends on several key signaling proteins, including the kinases Receptor-Interacting Protein (RIP)1 and RIP3 and the pseudokinase mixed-lineage kinase domain-like protein (MLKL). Necroptosis has been implicated in a number of physiological and pathophysiological conditions and is disturbed in many human diseases...
February 21, 2018: Cell Cycle
Michael Shaofei Zhang, Maiko Furuta, Alexei Arnaoutov, Mary Dasso
RCC1 associates to chromatin dynamically within mitosis and catalyzes Ran-GTP production. Exogenous RCC1 disrupts kinetochore structure in Xenopus egg extracts (XEEs), but the molecular basis of this disruption remains unknown. We have investigated this question, utilizing replicated chromosomes that possess paired sister kinetochores. We find that exogenous RCC1 evicts a specific subset of inner KT proteins including Shugoshin-1 (Sgo1) and the chromosome passenger complex (CPC). We generated RCC1 mutants that separate its enzymatic activity and chromatin binding...
February 21, 2018: Cell Cycle
Fiona Francis, Richard Belvindrah
No abstract text is available yet for this article.
February 20, 2018: Cell Cycle
Evangelos Giampazolias, Stephen W G Tait
No abstract text is available yet for this article.
February 19, 2018: Cell Cycle
Robert M Brosh, Steven W Matson
No abstract text is available yet for this article.
February 19, 2018: Cell Cycle
Christopher T Rhodes, Giulia Zunino, Shu-Wei Angela Huang, Sandra M Cardona, Astrid E Cardona, Mitchel S Berger, Vance P Lemmon, Chin-Hsing Annie Lin
Histone methyltransferases (HMTs) are present in heterogeneous cell populations within the adult brain including neurogenic niches. Yet the question remains whether loss of HMTs and the resulting changes in histone methylation alter cell fate in a region-specific manner. We utilized stereotaxic injection of Cre recombinant protein into the adult neurogenic niches, the subventricular zone (SVZ) adjacent to the lateral ventricle and the subgranular zone (SGZ) of the dentate gyrus. We confirmed that Cre protein was enzymatically active in vivo and recombination events were restricted to the vicinity of injection areas...
February 13, 2018: Cell Cycle
Yang Su, Zechao Wen, Qiyang Shen, Hua Zhang, Lei Peng, Guanglin Chen, Zhongxian Zhu, Chunxia Du, Hua Xie, Hongxing Li, Yankai Xia, Weibing Tang
Recently studies reported that long non-coding RNAs (lncRNAs) may take part in a lot of congenital diseases, meanwhile, Hirschsprung's disease (HSCR) is a major congenital digestive tract malformation. Nevertheless whether lncRNAs participate in the occurrence of HSCR and how it contributes to this disease are still unknown. LOC100507600 was selected from our gene expression microarray data obtained from bowel tissues from HSCR patients and negative controls. Subsequently, we used qRT-PCR to prove the result in 64 pairs of HSCR disease bowel stenosis tissues and negative controls...
February 12, 2018: Cell Cycle
Maya A Olshina, Gili Ben-Nissan, Michal Sharon
No abstract text is available yet for this article.
February 9, 2018: Cell Cycle
Wei Miao, Jing Zhang, Guanxiong Yan, Miao Tian, Yang Ma, Jie Xiong
Evolutionarily conserved E2F family transcription factors regulate the cell cycle via controlling gene expression in a wide range of eukaryotes. We previously demonstrated that the meiosis-specific transcription factor E2fl1 had an important role in meiosis in the model ciliate Tetrahymena thermophila. Here, we report that expression of another E2F family transcription factor gene DPL2 correlates highly with that of E2FL1. Similar to e2fl1Δ cells, dpl2Δ cells undergo meiotic arrest prior to anaphase I, with the five chromosomes adopting an abnormal tandem arrangement...
February 8, 2018: Cell Cycle
Ramona Madalina Babes, Ioana Teodora Tofolean, Roxana Gabriela Sandu, Oana Elena Baran, Vlad Cosoreanu, Maria Teodora Ilie, Alexandru Ionut Duta, Maria Catalina Ceausescu, Paul Mihai Ciucur, Simona Costache, Constanta Ganea, Irina Baran
Human leukemia Jurkat T cells were analyzed for apoptosis and cell cycle by flow cytometry, using the Annexin V/propidium iodide (PI) standard assay, and a simple PI staining in Triton X-100/digitonin-enriched PI/RNase buffer, respectively. Cells treated with doxorubicin or menadione displayed a very strong correlation between the apoptotic cell fraction measured by the Annexin V/PI assay, and the weight of a secondary cell population that emerged on the forward scatter (FS)/PI plot, as well as on the side scatter (SS)/PI and FL1/PI plots generated from parallel cell cycle recordings...
February 8, 2018: Cell Cycle
Jing Lv, Jijun Liu, Lei Guo, Jun Zhang, Yan Cheng, Chu Chen, Heping Zhao, Jihan Wang
Barrett's esophagus (BE) is defined as a metaplasia condition in the distal esophagus, in which the native squamous epithelium lining is replaced by a columnar epithelium with or without intestinal metaplasia. It is commonly accepted that BE is a precancerous lesion for esophageal adenocarcinoma. The aim of this study was to investigate the aberrant microRNAs (miRNAs) and differentially expressed genes (DEGs) associated with BE based on online microarray datasets. One miRNA and five gene expression profiling datasets were retrieved from the Gene Expression Omnibus Database...
February 8, 2018: Cell Cycle
Yuyao Wang, Dandan Zhang, Yi Zhang, Ni Ni, Zhimin Tang, Zhisha Bai, Bingqiao Shen, Hao Sun, Ping Gu
Strategies to improve retinal progenitor cell (RPC) capacity to yield proliferative and multipotent pools of cells that can efficiently differentiate into retinal neurons, including photoreceptors, could be vital for cell therapy in retinal degenerative diseases. In this study, we found that insulin-like growth factor-1 (IGF-1) plays a role in the regulation of proliferation and differentiation of RPCs. Our results show that IGF-1 promotes RPC proliferation via IGF-1 receptors (IGF-1Rs), stimulating increased phosphorylation in the PI3K/Akt and MAPK/Erk pathways...
February 8, 2018: Cell Cycle
Fade Gong, Kyle M Miller
Our genetic information is organized into chromatin, which consists of histones and proteins involved in regulating DNA compaction, accessibility and function. Chromatin is decorated by histone modifications, which provide signals that coordinate DNA-based processes including transcription and DNA damage response (DDR) pathways. A major signal involved in these processes is acetylation, which when attached to lysines within proteins, including histones, can be recognized and read by bromodomain-containing proteins...
February 2, 2018: Cell Cycle
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