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https://www.readbyqxmd.com/read/28535647/-effects-of-overexpression-of-mir-17-92-gene-cluster-on-the-biological-characteristics-of-prostate-cancer-cells-and-its-mechanism
#1
P Zhou, L Ma, J Zhou, J J Xu, F Liu, F Guo
Objective: To explore the effect and mechanism of over-expression of miR-17-92 gene cluster on the biological characteristics of prostate cancer cells. Methods: DU145 cells were transfected with miR-17-92 gene expression plasmid and clones with stable ectopic miR-17-92 overexpression were established. The cell viabilities of DU145-17-92 and DU145-control cells were monitored by xCELLigence system. Cell proliferation and apoptosis were analyzed by Ki-67 and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay...
May 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28535587/bicyclol-exerts-an-anti-tumor-effect-via-ros-mediated-endoplasmic-reticulum-stress-in-human-renal-cell-carcinoma-cells
#2
Jing Wu, Weichao Zheng, Ling Rong, Yingru Xing, Dong Hu
Renal cell carcinoma (RCC) is the most common subtype of kidney cancer. Currently, there is a lack of efficient treatment for RCC. Bicyclol, an anti-hepatitis drug, has been demonstrated to possess anti-tumor properties. However, the effect of bicyclol in RCC remains elusive. Therefore, the aim of this study is to investigate the biological effects of bicyclol on RCC and the underlying mechanisms. The data from this study indicated that bicyclol markedly induced cell apoptosis and cell cycle arrest and increased the production of reactive oxygen species (ROS) in RCC cells...
May 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28535537/triggering-of-suicidal-erythrocyte-death-by-exemestane
#3
Abdulla Al Mamun Bhuyan, Rosi Bissinger, Hang Cao, Florian Lang
BACKGROUND/AIMS: The steroidal aromatase inactivator exemestane blocks estrogen biosynthesis and is thus employed for the prevention and treatment of breast cancer. Exemestane is in part effective by stimulation of suicidal cell death or apoptosis. Side effects of exemestane treatment include anemia. At least in theory, exemestane induced anemia could be secondary to stimulation of suicidal erythrocyte death or eryptosis, characterized by cell shrinkage and cell membrane scrambling with phosphatidylserine translocation to the erythrocyte surface...
May 11, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28535510/heat-shock-protein-a12b-protects-vascular-endothelial-cells-against-sepsis-induced-acute-lung-injury-in-mice
#4
Yi Chen, Lei Wang, Qiuxiang Kang, Xu Zhang, Guifang Yu, Xiaojian Wan, Jiafeng Wang, Keming Zhu
BACKGROUND: Pulmonary endothelial injury is a critical process in the pathogenesis of acute lung injury (ALI) during sepsis. Heat shock protein A12B (HSPA12B) is mainly expressed in endothelial cells and protects against several harmful factors. However, the effects of HSPA12B in sepsis-induced ALI and its potential mechanisms of action remain unclear. METHODS: For in vivo experiments, C57BL/6 mice were randomly divided into four groups (n=15): a sham operation group, a cecal ligation and puncture (CLP) group, a HSPA12B siRNA-CLP group and a negative control (NC) siRNA-CLP group...
May 25, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28535504/long-non-coding-rna-kcnq1ot1-promotes-cataractogenesis-via-mir-214-and-activation-of-the-caspase-1-pathway
#5
Xin Jin, Hao Jin, Yan Shi, Yiyuan Guo, Hong Zhang
BACKGROUND/AIMS: KCNQ1OT1 regulates the expression of tissue-specific imprinted genes within the Kcnq1 domain. Imprinted genes are positive regulators of apoptosis, one of the forms of cell death related to cataract formation, and thus may provide novel therapeutic targets for cataract treatment. Here, we studied the role of non-coding RNAs(ncRNA) in cataract formation. METHODS: Human lens epithelium cells (HLECs) were treated with H2O2, and the expression of KCNQ1OT1 and miR-214 was detected by qRT-PCR...
May 25, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28535302/inhibition-of-n-acetylglucosaminyltransferase-v-enhances-the-cetuximab-induced-radiosensitivity-of-nasopharyngeal-carcinoma-cells-likely-through-egfr-n-glycan-alterations
#6
Xiaomin Huang, Ting Liu, Qiongyao Wang, Weiliang Zhu, Hui Meng, Linlang Guo, Ting Wei, Jian Zhang
N-acetylglucosaminyltransferase V (GnT-V), an enzyme that catalyses the formation of the N-linked β-1-6 branching of oligosaccharides, is related to the radiosensitivity of nasopharyngeal carcinoma (NPC). Cetuximab (C225) is an epidermal growth factor receptor (EGFR) inhibitor used as a radiosensitizer in the treatment of NPC. In this study, we used GnT-V as a molecular target to further sensitize cetuximab-treated NPC cells to radiation. The results from two NPC cell lines (CNE1 and CNE2) revealed that the silencing of GnT-V enhanced cetuximab-induced radiosensitivity by decreasing the β-1-6 branching of oligosaccharides on the EGFR...
May 23, 2017: Glycobiology
https://www.readbyqxmd.com/read/28535012/neokestose-suppresses-the-growth-of-human-melanoma-a2058-cells-via-inhibition-of-the-nuclear-factor%C3%A2-%C3%AE%C2%BAb-signaling-pathway
#7
Jiann-Shing Wu, Jan-Yi Chang, C Will Chen, Ming-Tse Lin, Dey-Chyi Sheu, Shun-Mei Lee
Neokestose has superior prebiotic effects compared with the commercial fructooligosaccharides (FOS). In addition, the branched structure of neokestose, a type of neo‑FOS, confers improved chemical stability compared with conventional FOS; therefore, the investigation of the branched structure by the present study may be of high biomedical value. The present study aimed to determine whether neokestose may suppress growth of the A2058 melanoma cell line. The cells were initially treated with neokestose; subsequently, in vitro cytotoxicity was assessed using MTT, and cell cycle progression and apoptosis were detected using flow cytometry...
May 17, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28535003/mirna%C3%A2-1271-inhibits-cell-proliferation-in-neuroglioma-by-targeting-fibronectin-1
#8
Jian Gong, Zhao-Xia Wang, Zhen-Ying Liu
miR-1271 is a multifunctional post-translational modulator, which is involved in several diseases. However, the association between microRNA (miR)‑1271 and fibronectin 1 (FN1) remains to be fully elucidated in neuroglioma. In the present study, it was hypothesized that a post‑translational mechanism of miR‑1271 regulates the expression of FN1 in the progression of neuroglioma. The present study aimed to investigate the clinical significance and underlying molecular mechanisms of miRNA‑1271 in the development of glioma...
May 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28534996/ginsenoside-rd-regulates-the-akt-mtor-p70s6k-signaling-cascade-and-suppresses-angiogenesis-and-breast-tumor-growth
#9
Eryun Zhang, Hailian Shi, Li Yang, Xiaojun Wu, Zhengtao Wang
Blockade of angiogenesis is an important approach for cancer treatment and prevention. In the present study, we investigated the effect of ginsenoside Rd (Rd) on angiogenesis in vitro and in vivo. Our results demonstrated that Rd inhibited vascular endothelial growth factor (VEGF)-induced migration, tube formation and proliferation of primary cultured human umbilical vascular endothelial cells (HUVECs) dose‑dependently. Furthermore, Rd abrogated VEGF-induced sprouting of the vessels from aortic rings, and inhibited vascular formation in the Matrigel plug assay in vivo...
May 19, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28534979/high-expression-of-piwil2-promotes-tumor-cell-proliferation-migration-and-predicts-a-poor-prognosis-in-glioma
#10
Jinquan Li, Li Xu, Zhen Bao, Peng Xu, Hao Chang, Jingjing Wu, Yuanqi Bei, Liuwan Xia, Peizhang Wu, Gang Cui
Piwi-like RNA-mediated gene silencing 2 (PIWIL2), has been reported as an oncogene tightly associated with the genesis and progression of various malignancies. Nevertheless, the function of the PIWIL2 protein in human gliomas has not yet been clarified. In this study, we sought to investigate the clinical significance of PIWIL2 expression and reveal its function in the pathological process of gliomas. Through western blot and immunohistochemical analyses we found that PIWIL2 was overexpressed in glioma tissues...
May 17, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28534969/the-cdc2-cdk1-inhibitor-purvalanol-a-enhances-the-cytotoxic-effects-of-taxol-through-op18-stathmin-in-non-small-cell-lung-cancer-cells-in%C3%A2-vitro
#11
Xian Chen, Ying Liao, Dan Long, Ting Yu, Fang Shen, Xuechi Lin
Purvalanol A is a highly selective inhibitor of Cdc2 [also known as cyclin-dependent kinase 1 (CDK1)]. Taxol is an anti-tumor chemotherapeutic drug which is widely used clinically. In this study, the CDK1 inhibitor, purvalanol A was applied to explore the relevance of Cdc2 signaling and taxol sensitivity through analyses, such as cellular proliferation and apoptosis assays, ELISA, western blot analysis and immunoprecipitation. We demonstrated that purvalanol A effectively enhanced the taxol-induced apoptosis of NCI-H1299 cells, as well as its inhibitory effects on cellular proliferation and colony formation...
May 15, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28534965/cucurbitacin%C3%A2-b-induces-autophagy-and-apoptosis-by-suppressing-cip2a-pp2a-mtorc1-signaling-axis-in-human-cisplatin-resistant-gastric-cancer-cells
#12
Xuewen Liu, Chao Duan, Juanli Ji, Te Zhang, Xiaoning Yuan, Yunfei Zhang, Wenjing Ma, Jingyuan Yang, Linsen Yang, Zhiguo Jiang, Huiliang Yu, Ying Liu
Cancerous inhibitor of protein phosphatase 2A (CIP2A) is a human oncoprotein that is overexpressed in multiple kinds of tumors including gastric cancer (GC). Mammalian target of rapamycin complex 1 (mTORC1) over-activation is detected in GC and many other cancers. Previous study found that CIP2A/mTORC1 controls cell growth and autophagy through direct association. CIP2A plays an 'oncogenic nexus' in several cancer types to participate in the tumorigenic transformation and chemoresistance. In the present study, we investigated whether Cucurbitacin B (CuB), a natural compound found in Cucurbitaceae, can be used in cisplatin (DDP)-resistant human GC cell line SGC7901/DDP...
May 18, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28534964/tamoxifen-promotes-apoptosis-and-inhibits-invasion-in-estrogen%C3%A2-positive-breast-cancer-mcf%C3%A2-7-cells
#13
Wei Li, Xingpeng Shi, Yan Xu, Jianmei Wan, Shaohua Wei, Ran Zhu
Tamoxifen (TAM) is the earliest non-steroidal antiestrogen drug, which has been widely used in endocrine therapy targeting breast cancer. The aim of the present study was to investigate the effect of TAM on the proliferation, apoptosis, migration and invasion of the estrogen‑positive (ER+) breast cancer cell line MCF‑7 in vitro, and elucidate its mechanisms. It was demonstrated that TAM suppressed proliferation, migration and invasion, and induced apoptosis in MCF‑7 cells. Further investigation revealed that the mitochondrial membrane potential and the amount of ATP were significantly decreased following the treatment of MCF‑7 cells with TAM...
May 18, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28534962/galectin%C3%A2-9-ameliorates-fulminant-liver-injury
#14
Tomoko Tadokoro, Asahiro Morishita, Teppei Sakamoto, Shintaro Fujihara, Koji Fujita, Shima Mimura, Kyoko Oura, Takako Nomura, Joji Tani, Hirohito Yoneyama, Hisakazu Iwama, Takashi Himoto, Toshiro Niki, Mitsuomi Hirashima, Tsutomu Masaki
Fulminant hepatitis is a severe liver disease resulting in hepatocyte necrosis. Galectin‑9 (Gal‑9) is a tandem‑repeat‑type galectin that has been evaluated as a potential therapeutic agent for various diseases that regulate the host immune system. Concanavalin A (ConA) injection into mice results in serious, immune‑mediated liver injury similar to human viral, autoimmune and fulminant hepatitis. The present study investigated the effects of Gal‑9 treatment on fulminant hepatitis in vivo and the effect on the expression of microRNAs (miRNAs), in order to identify specific miRNAs associated with the immune effects of Gal‑9...
May 18, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28534961/disruption-of-serine-threonine-protein-phosphatase-5-inhibits-tumorigenesis-of-urinary-bladder-cancer-cells
#15
Ming Chen, Jian-Min Lv, Jian-Qing Ye, Xin-Gang Cui, Fa-Jun Qu, Lu Chen, Xi Liu, Xiu-Wu Pan, Lin Li, Hai Huang, Qi-Wei Yang, Jie Chen, Lin-Hui Wang, Yi Gao, Dan-Feng Xu
Serine/threonine protein phosphatase 5 (PPP5C) is a member of the protein serine/threonine phosphatase family and has been shown to participate in multiple signaling cascades and tumor progression. We found that PPP5C was highly expressed in bladder cancer tissues compared to normal urothelial tissues, and positively correlated to tumor stages through ONCOMINE microarray data mining. Knockdown of PPP5C via a lentivirus-mediated short hairpin RNA (shRNA) markedly inhibited cell proliferation and colony formation...
May 16, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28534945/trb3-mediates-advanced-glycation-end-product-induced-apoptosis-of-pancreatic-%C3%AE-cells-through-the-protein-kinase-c-%C3%AE-pathway
#16
Meng Wang, Wenjian Zhang, Shiqing Xu, Liang Peng, Zai Wang, Honglin Liu, Qing Fang, Tingting Deng, Xiuli Men, Jinning Lou
Advanced glycation end products (AGEs), which accumulate in the body during the development of diabetes, may be one of the factors leading to pancreatic β-cell failure and reduced β-cell mass. However, the mechanisms responsible for AGE‑induced apoptosis remain unclear. This study identified the role and mechanisms of action of tribbles homolog 3 (TRB3) in AGE-induced β-cell oxidative damage and apoptosis. Rat insulinoma cells (INS-1) were treated with 200 µg/ml AGEs for 48 h, and cell apoptosis was then detected by TUNEL staining and flow cytometry...
May 16, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28534940/the-wnt-regulator-sfrp4-inhibits-mesothelioma-cell-proliferation-migration-and-antagonizes-wnt3a-via-its-netrin-like-domain
#17
Vanathi Perumal, Arun M Dharmarajan, Simon A Fox
Secreted frizzled related proteins (SFRPs) are a family of Wnt regulators which are frequently downregulated in cancers. In malignant mesothelioma (MM), downregulation of SFRP4 has been reported as a mechanism which contributes to aberrant activation of oncogenic Wnt signaling. Here we investigated the biological consequences of SFRP4 in two mesothelioma cell models where this protein is downregulated. We used recombinant SFRP4 and transient overexpression to study changes in proliferation, migration and downstream signaling...
May 18, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28534937/the-inhibitory-effect-of-meg3-mir-214-aifm2-axis-on-the-growth-of-t-cell-lymphoblastic-lymphoma
#18
Fang-Yi Fan, Rui Deng, Hai Yi, Hao-Ping Sun, Yan Zeng, Guang-Cui He, Yi Su
T-cell lymphoblastic lymphoma (T-LBL) is an aggressive malignancy with poor prognosis and high recurrence rate. Long non-coding RNA (lncRNA)-MEG3 is an important tumor suppressor in various cancers. The present study investigated the potential role of maternally expressed gene 3 (MEG3) in the progression of T-LBL. Suppressed expression of MEG3 was detected in T-LBL tissues compared with adjacent histologically normal tissues. Down-regulated level of MEG3 was also found in three T-LBL cell lines (CCRF-CEM, Jurkat and SUP-T1) compared with human T-cell line H9...
May 17, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28534853/the-1-tosylpentan-3-one-protects-against-6-hydroxydopamine-induced-neurotoxicity
#19
Chien-Jen Kao, Wu-Fu Chen, Bo-Lin Guo, Chien-Wei Feng, Han-Chun Hung, Wen-Ya Yang, Chun-Sung Sung, Kuan-Hao Tsui, Hsin Chu, Nan-Fu Chen, Zhi-Hong Wen
Previous studies have demonstrated that the marine compound austrasulfone, isolated from the soft coral Cladiella australis, exerts a neuroprotective effect. The intermediate product in the synthesis of austrasulfone, dihydroaustrasulfone alcohol, attenuates several inflammatory responses. The present study uses in vitro and in vivo methods to investigate the neuroprotective effect of dihydroaustrasulfone alcohol-modified 1-tosylpentan-3-one (1T3O). Results from in vitro experiments show that 1T3O effectively inhibits 6-hydroxydopamine-induced (6-OHDA-induced) activation of both p38 mitogen-activated protein kinase (MAPK) and caspase-3 in SH-SY5Y cells; and enhances nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) expression via phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) signaling...
May 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28534825/a-novel-combination-of-withaferin-a-and-sulforaphane-inhibits-epigenetic-machinery-cellular-viability-and-induces-apoptosis-of-breast-cancer-cells
#20
Kendra J Royston, Neha Udayakumar, Kayla Lewis, Trygve O Tollefsbol
With cancer often classified as a disease that has an important epigenetic component, natural compounds that have the ability to regulate the epigenome become ideal candidates for study. Humans have a complex diet, which illustrates the need to elucidate the mechanisms of interaction between these bioactive compounds in combination. The natural compounds withaferin A (WA), from the Indian winter cherry, and sulforaphane (SFN), from cruciferous vegetables, have numerous anti-cancer effects and some report their ability to regulate epigenetic processes...
May 19, 2017: International Journal of Molecular Sciences
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