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https://www.readbyqxmd.com/read/28627629/reducing-autophagy-and-inducing-g1-phase-arrest-by-aloperine-enhances-radio-sensitivity-in-lung-cancer-cells
#1
Zhijie Xu, Yuanliang Yan, Shuangshuang Zeng, Long Qian, Shuang Dai, Lingfang Xiao, Lin Wang, Xue Yang, Yi Xiao, Zhicheng Gong
Aloperine (ALO), an isolated alkaloid from the leaves of Sophora alopecuroides (S. alopecuroides), has been suggested to exhibit anti-inflammatory and antitumor properties, and has been traditionally used to treat various diseases, including cancers. However, little is known about the effects of ALO on the radio-sensitivity of lung cancer cells. In the present study, we confirmed that agent ALO inhibits cell growth, promotes cell aopotosis and induces G1 phase arrest and consequently enhanced the radio-sensitivity in radio-resistant lung cancer cells A549/IR...
June 19, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28608720/diagnostic-algorithm-of-common-mature-b-cell-lymphomas-by-immunohistochemistry
#2
Huan-You Wang, Youli Zu
CONTEXT: - Different types of mature B-cell lymphomas, including plasma cell neoplasms, exhibit distinct immunohistochemical profiles, which enable them to be correctly diagnosed. However, except for rare examples of lymphoma-specific immunohistochemistry, such as cyclin D1 in mantle cell lymphoma and annexin A1 in hairy cell leukemia, immunohistochemical profiles of mature B-cell lymphomas overlap and lack specificity. OBJECTIVES: - To systemically review immunohistochemical features associated with commonly encountered, mature B-cell lymphomas based on the presence or absence of CD5 and CD10; to review the immunophenotypic profile of plasma cells derived from plasma cell myelomas and B-cell lymphomas; and to review a group of rare, aggressive B-cell lymphomas with antigen expression features of plasma cells...
June 13, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28569402/lrwd1-regulates-microtubule-nucleation-and-proper-cell-cycle-progression-in-the-human-testicular-embryonic-carcinoma-cells
#3
Chia-Yih Wang, Yu-Han Hong, Jhih-Siang Syu, Yung-Chieh Tsai, Xiu-Ying Liu, Ting-Yu Chen, Yin-Mei Su, Pao-Lin Kuo, Yung-Ming Lin, Yen-Ni Teng
Leucine-rich repeats and WD repeat domain containing protein 1 (LRWD1) is a testis-specific protein that mainly expressed in the sperm neck where centrosome is located. By using microarray analysis, LRWD1 is identified as a putative gene that involved in spermatogenesis. However, its role in human male germ cell development has not been extensively studied. When checking in the semen of patients with asthenozoospermia, teratozoospermia, and asthenoteratozoospermia, the level of LRWD1 in the sperm neck was significantly reduced with a defective neck or tail...
June 1, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28555054/knockdown-of-xbp1-by-rnai-in-mouse-granulosa-cells-promotes-apoptosis-inhibits-cell-cycle-and-decreases-estradiol-synthesis
#4
Nan Wang, Fan Zhao, Pengfei Lin, Guangle Zhang, Keqiong Tang, Aihua Wang, Yaping Jin
Granulosa cells are crucial for follicular growth, development, and follicular atresia. X-box binding protein 1 (XBP1), a basic region-leucine zipper protein, is widely involved in cell differentiation, proliferation, apoptosis, cellular stress response, and other signaling pathways. In this study, RNA interference, flow cytometry, western blot, real-time PCR, Cell Counting Kit (CCK8), and ELISA were used to investigate the effect of XBP1 on steroidogenesis, apoptosis, cell cycle, and proliferation of mouse granulosa cells...
May 29, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28521488/mir-137-inhibits-the-proliferation-of-human-non-small-cell-lung-cancer-cells-by-targeting-src3
#5
Ruilin Chen, Yongqing Zhang, Chengcheng Zhang, Hua Wu, Shumei Yang
Non-small cell lung cancer (NSCLC) is the most common type of lung cancer. The results of the present study demonstrate that high expression of microRNA (miR)-137 and low expression of steroid receptor coactivator-3 (SRC3) had a significant negative correlation in 40 NSCLC tissue samples. In addition, cell colony formation and proliferation was significantly reduced in miR-137-transfected A549 and NCI-H838 cells compared with scramble-transfected NSCLC cell lines. miR-137 was identified to induce G1/S cell cycle arrest and dysregulate the mRNA expression of cell cycle-associated proteins (proliferating cell nuclear antigen, cyclin E, cyclin A1, cyclin A2 and p21) in NSCLC cells...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28488543/the-transcription-factor-foxa1-induces-epithelial-ovarian-cancer-tumorigenesis-and-progression
#6
Li-Li Wang, Yin-Ling Xiu, Xi Chen, Kai-Xuan Sun, Shuo Chen, Dan-Dan Wu, Bo-Liang Liu, Yang Zhao
FOXA1 (forkhead box A1), a member of the FOXA transcription factor superfamily, plays an important role in tumor occurrence and development. However, the relationship between FOXA1 and ovarian cancer has not been reported. We examined normal ovarian tissue and ovarian cancer tissue and found increased FOXA1 expression in the cancer tissue. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and flow cytometry assays demonstrated that transfection with small interfering RNA to silence FOXA1 (si-FOXA1) in ovarian cancer cell lines decreased cell proliferation and induced apoptosis and S-phase arrest...
May 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28414743/the-et-1-mediated-carbonylation-and-degradation-of-anxa1-induce-inflammatory-phenotype-and-proliferation-of-pulmonary-artery-smooth-muscle-cells-in-hps
#7
Jing He, Bin Yi, Yang Chen, Qing Huang, Huan Wang, Kaizhi Lu, Weiling Fu
Hepatopulmonary syndrome (HPS) is a serious complication of advanced liver disease, which markedly increases mortality. Pulmonary vascular remodelling (PVR) induced by circulating mediators plays an important role in the pathogenesis of HPS, while the underlying mechanism remains undefined. In the present study, we reported that endothelin-1 (ET-1) is up-regulated and annexin A1(ANXA1) is down-regulated in HPS rat, and ET-1 decreases the ANXA1 expression in a dose-dependent manner in rat pulmonary arterial smooth muscle cells (PASMCs)...
2017: PloS One
https://www.readbyqxmd.com/read/28343894/-1-9-n%C3%AE-c-crourorb-a1-isolated-from-croton-urucurana-latex-induces-g2-m-cell-cycle-arrest-and-apoptosis-in-human-hepatocarcinoma-cells
#8
Priscila de Matos Cândido-Bacani, Frédéric Ezan, Patrícia de Oliveira Figueiredo, Maria de Fátima Cepa Matos, Fernanda Rodrigues Garcez, Walmir Silva Garcez, Georges Baffet
[1-9-NαC]-crourorb A1 is a cyclic peptide isolated from Croton urucurana Baillon latex, found in midwestern Brazil, that has been shown to exert cytotoxic effects against a panel of cancer cell lines. However, the underlying mechanisms responsible for the crourorb A1-induced cytotoxicity in cancer cells remain unknown. In this study, the effects of crourorb A1 on the viability, apoptosis, cell cycle and migration of Huh-7 (human hepatocarcinoma) cells were investigated. We evaluated the viability of Huh-7 cells treated with crourorb A1 in 2D and 3D collagen cultures and found that cells in 3D culture exhibited increased resistance to crourorb A1 compared to cells in 2D culture (IC50: 62μg/ml versus 35...
May 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28301569/meiotic-failure-in-cyclin-a1-deficient-mouse-spermatocytes-triggers-apoptosis-through-intrinsic-and-extrinsic-signaling-pathways-and-14-3-3-proteins
#9
Sunil K Panigrahi, Marcia Manterola, Debra J Wolgemuth
Cyclin A1 (Ccna1), a member of the mammalian A type cyclins, is most abundantly expressed in spermatocytes and is essential for spermatogenesis in the mouse. Ccna1- deficient spermatocytes arrest at late meiotic prophase and undergo apoptosis. To further delineate the mechanisms and key factors involved in this process, we have examined changes in expression of genes involved in both intrinsic and extrinsic signaling pathways that trigger apoptosis in the mutant spermatocytes. Our results show that both pathways are involved, and that the factors involved in the intrinsic pathway were expressed earlier than those involved in the extrinsic pathway...
2017: PloS One
https://www.readbyqxmd.com/read/28214847/contribution-of-p62-to-phenotype-transition-of-coronary-arterial-myocytes-with-defective-autophagy
#10
Junxiang Bao, Guangbi Li, Xinxu Yuan, Pin-Lan Li, Erich Gulbins
BACKGROUND: Autophagy disorder contributes to dedifferentiation of arterial smooth muscle cells, but the mechanisms are poorly understood. Here, we sought to investigate the role of scaffolding adaptor p62/SQSTM1 (p62) in phenotype switching of mouse coronary arterial myocytes (CAMs) induced by CD38 gene deficiency or lysosomal dysfunction which blocks autophagic flux in the cells. METHODS: Protein expression was measured by western blot analysis and immunofluorescent staining...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28202053/up-regulation-of-mir-146a-increases-the-sensitivity-of-non-small-cell-lung-cancer-to-ddp-by-downregulating-cyclin-j
#11
Lin Shi, Zhaozhong Xu, Gang Wu, Xiaoting Chen, Yuanyuan Huang, Yanjing Wang, Weiqiang Jiang, Bin Ke
BACKGROUND: Cisplatin (DDP)-based chemotherapy is the common first-line therapy for lung cancer. However, their efficacy is often limited by primary drug resistance and/or acquired drug resistance. The aim of this study was to investigate the function of miRNA-146a (miR-146a) in DDP-resistant non-small cell lung cancer (NSCLC), as well as the underlying mechanisms. METHODS: The effect of overexpression of miR-146a and/or knockdown of cyclin J (CCNJ) in A549/DDP and SPC-A1/DDP cells were investigated as follows...
February 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28115626/prmt5-regulates-ires-dependent-translation-via-methylation-of-hnrnp-a1
#12
Guozhen Gao, Surbhi Dhar, Mark T Bedford
The type II arginine methyltransferase PRMT5 is responsible for the symmetric dimethylation of histone to generate the H3R8me2s and H4R3me2s marks, which correlate with the repression of transcription. However, the protein level of a number of genes (MEP50, CCND1, MYC, HIF1a, MTIF and CDKN1B) are reported to be downregulated by the loss of PRMT5, while their mRNA levels remain unchanged, which is counterintuitive for PRMT5's proposed role as a transcription repressor. We noticed that the majority of the genes regulated by PRMT5, at the posttranscriptional level, express mRNA containing an internal ribosome entry site (IRES)...
May 5, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28110416/lasiokaurin-derivatives-synthesis-antimicrobial-and-antitumor-biological-evaluation-and-apoptosis-inducing-effects
#13
Da-Hong Li, Ping Hu, Sheng-Tao Xu, Chun-Yan Fang, Shuang Tang, Xin-Yu Wang, Xing-Yan Sun, He Li, Ying Xu, Xiao-Ke Gu, Jin-Yi Xu
Herein, a series of lasiokaurin derivatives were designed and synthesized. All the derivatives together with lasiokaurin and oridonin were tested for their antimicrobial and antiproliferative activity. Compound 16 showed the most promising antimicrobial activity with MICs of 2.0 and 1.0 μg/mL against Gram-Positive bacteria S. aureus and B. subtilis, respectively. All the synthetic lasiokaurin derivatives showed better antiproliferative activity than parent compound lasiokaurin 1. Compound 10 exhibited the strongest cytotoxicity with IC50 values of 0...
January 21, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/28076854/open-angle-glaucoma-drug-development-pipeline-during-the-last-20-years-1995-2015
#14
REVIEW
André Vicente, Sylvie Prud'homme, Joana Ferreira, Luís Abegão Pinto, Ingeborg Stalmans
OBJECTIVES: To analyse drug development for open-angle glaucoma during the last 20 years. METHODS: Research was performed by referring to clinical trials registered at the International Clinical Trials Registry Platform (ICTRP). A search for the condition "open-angle glaucoma" with the intervention "drug" was performed. We included trials registered from 01/01/1995 to 01/01/2015, only involving studies in phases 1, 2, and 3. Only studies resorting to novel treatment strategies (either novel drugs or yet-untested fixed associations of approved medication) were considered...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27984373/hnrnpa1-a-splicing-regulator-is-an-effective-target-protein-for-cervical-cancer-detection-comparison-with-conventional-tumor-markers
#15
Young-Jon Kim, Byoung-Ryun Kim, Jae-Suk Ryu, Gyeong-Ok Lee, Hak-Ryul Kim, Keum-Ha Choi, Jae-Won Ryu, Kyoung-Suk Na, Min-Cheol Park, Hong-Seob So, Ji-Hyun Cho, Do-Sim Park
OBJECTIVE: Heterogeneous nuclear ribonucleoprotein A1 (HNRNPA1), serine/arginine-rich splicing factor 1 (SRSF1), and SRSF3 are splicing regulators associated with oncogenesis. However, the alterations of SF proteins and their diagnostic values in cervical cancer are unclear. To apply SFs clinically, effective marker selection and characterization of the target organ properties are essential. MATERIALS AND METHODS: We concurrently analyzed HNRNPA1, SRSF1, SRSF3, and the conventional tumor markers squamous cell carcinoma antigen (SCCA) and carcinoembryonic antigen (CEA) in cervical tissue samples (n = 127) using semiquantitative immunoblotting...
February 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/27973579/knockdown-of-creb3-luman-by-shrna-in-mouse-granulosa-cells-results-in-decreased-estradiol-and-progesterone-synthesis-and-promotes-cell-proliferation
#16
Fan Zhao, Nan Wang, Yanglei Yi, Pengfei Lin, Keqiong Tang, Aihua Wang, Yaping Jin
Luman (also known as LZIP or CREB3) is a transcription factor and a member of the cAMP responsive element-binding (CREB) family proteins. Although Luman has been detected in apoptotic granulosa cells and disorganized atretic bodies, the physiological function of Luman in follicular development has not been reported. Our objective is to determine the role of Luman in folliculogenesis by knocking down Luman expression in mouse GCs (granulosa cells) using shRNA. Luman expression was successfully knocked down in mouse GCs at the mRNA and protein level, as confirmed by real-time quantitative PCR, western blot and immunofluorescence staining, respectively...
2016: PloS One
https://www.readbyqxmd.com/read/27884605/arsenic-induced-activation-of-the-homeodomain-interacting-protein-kinase-2-hipk2-to-camp-response-element-binding-protein-creb-axis
#17
Kazunori Hashimoto, Yoshiaki Tsuji
Cyclic AMP-response element-binding protein (CREB) plays key transcriptional roles in cell metabolism, proliferation, and survival. Ser133 phosphorylation by protein kinase A (PKA) is a well-characterized CREB activation mechanism. Homeodomain-interacting protein kinase (HIPK) 2, a nuclear serine/threonine kinase, activates CREB through Ser271 phosphorylation; however, the regulatory mechanism remains uncharacterized. Transfection of CREB in HEK293 cells together with the kinase demonstrated that HIPK2 phosphorylated CREB at Ser271 but not Ser133; likewise, PKA phosphorylated CREB at Ser133 but not Ser271, suggesting two distinct CREB regulatory mechanisms by HIPK2 and PKA...
January 6, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/27880045/koelreuteria-formosana-extract-induces-growth-inhibition-and-cell-death-in-human-colon-carcinoma-cells-via-g2-m-arrest-and-lc3-ii-activation-dependent-autophagy
#18
Chi-Ting Horng, Yueh-Jung Wu, Pei-Ni Chen, Shu-Chen Chu, Chun-Miao Tsai, Yih-Shou Hsieh
Autophagy is a self-destructive process that degrades cytoplasmic constituents. In our previous study, Koelreuteria formosana ethanolic extract (KFEE), which is obtained from natural plants endemic to Taiwan, has inhibited cell metastasis in renal carcinoma cells. However, the anticancer effects of KFEE on colon cancer remain unclear. In this study, KFEE exerted a strong cytotoxic effect on DLD-1 and COLO 205 human colorectal cancer cell lines. KFEE effectively inhibited cancer cell proliferation, induced G2/M-phase arrest associated with downregulaton of cyclin E, cyclin B and cdc25C and upregulation of p21, and induced cell death by activating autophagy but did not cause apoptotic cell death...
January 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/27845389/bafilomycin-a1-induces-caspase-independent-cell-death-in-hepatocellular-carcinoma-cells-via-targeting-of-autophagy-and-mapk-pathways
#19
Yumei Yan, Ke Jiang, Peng Liu, Xianbin Zhang, Xin Dong, Jingchun Gao, Quentin Liu, Martin P Barr, Quan Zhang, Xiukun Hou, Songshu Meng, Peng Gong
Hepatocellular carcinoma (HCC) is refractory to chemotherapies, necessitating novel effective agents. The lysosome inhibitor Bafilomycin A1 (BafA1) at high concentrations displays cytotoxicity in a variety of cancers. Here we show that BafA1 at nanomolar concentrations suppresses HCC cell growth in both 2 dimensional (2D) and 3D cultures. BafA1 induced cell cycle arrest in the G1 phase and triggered Cyclin D1 turnover in HCC cells in a dual-specificity tyrosine phosphorylation-regulated kinase 1B (DYRK1B) dependent manner...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27792641/lim-domain-only-2-regulates-endothelial-proliferation-angiogenesis-and-tissue-regeneration
#20
Shu Meng, Gianfranco Matrone, Jie Lv, Kaifu Chen, Wing Tak Wong, John P Cooke
BACKGROUND: LIM domain only 2 (LMO2, human gene) is a key transcription factor that regulates hematopoiesis and vascular development. However, its role in adult endothelial function has been incompletely characterized. METHODS AND RESULTS: In vitro loss- and gain-of-function studies on LMO2 were performed in human umbilical vein endothelial cells with lentiviral overexpression or short hairpin RNA knockdown (KD) of LMO2, respectively. LMO2 KD significantly impaired endothelial proliferation...
October 6, 2016: Journal of the American Heart Association
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