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https://www.readbyqxmd.com/read/28442011/-ck2%C3%AE-regulates-the-metastases-and-migration-of-lung-adenocarcinoma-%C3%A2-a549-cell-line-through-pi3k-akt-gsk-3%C3%AE-signal-pathway
#1
Aibing Wu, Mingchun Li, Zongjiong Mai, Shujun Li, Zhixiong Yang
BACKGROUND: Lung cancer is the leading cancer-related death worldwide. Patients with lung cancer mainly died of tumor metastasis and invasion. Protein kinase CK2 is an ubiquitous serine/threonine protein kinase and is frequently upregulated in various human tumors. This study aims to explore the effect and molecular mechanism of the invasion and migration of lung adenocarcinoma A549 cells after knock-down of CK2α expression. METHODS: The pSilencerTM 4.1-siCK2α-eGFP of lentiviral-mediated shRNA was constructed...
April 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/28440478/overexpression-of-secretory-phospholipase-a2-iia-supports-cancer-stem-cell-phenotype-via-her-erbb-elicited-signaling-in-lung-and-prostate-cancer-cells
#2
Shan Lu, Zhongyun Dong
Resistance to conventional chemotherapies remains a significant clinical challenge in treatment of cancer. The cancer stem cells (CSCs) have properties necessary for tumor initiation, resistance to therapy, and progression. HER/ERBB‑elicited signaling supports CSC properties. Our previous studies revealed that secretory phospholipase A2 group IIa (sPLA2‑IIa) is overexpressed in both prostate and lung cancer cells, leading to an aberrant high level in the interstitial fluid, i.e., tumor microenvironment and blood...
April 19, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28432201/mg53-biological-function-and-potential-as-a-therapeutic-target
#3
Yan Zhang, Hong-Kun Wu, Fengxiang Lv, Rui-Ping Xiao
MG53 (also known as TRIM72) is a cardiac and skeletal muscle-specific TRIM-family protein that exhibits multiple biological functions. First, MG53 participates in plasma membrane repair of the heart, skeletal muscle and other tissues. Second, MG53 is essentially involved in the cardioprotection of cardiac ischemic, pre-conditioning and post-conditioning, by activating the PI3K-Akt-GSK3β and ERK1/2 survival signaling pathways. Moreover, systemic delivery of recombinant MG53 protein ameliorates the impact of a range of injury insults on heart, skeletal muscle, lung, kidney, skin and brain...
April 21, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28430130/timp1-promotes-cell-survival-by-activating-the-pdk1-signaling-pathway-in-melanoma
#4
Mariana Toricelli, Fabiana H M Melo, Aline Hunger, Daniela Zanatta, Bryan E Strauss, Miriam G Jasiulionis
High TIMP1 expression is associated with poor prognosis in melanoma, where it can bind to CD63 and β1 integrin, inducing PI3-kinase pathway and cell survival. Phosphatidylinositol (3,4,5)-trisphosphate (PIP3), generated under phosphatidylinositol-3-kinase (PI3K) activation, enables the recruitment and activation of protein kinase B (PKB/AKT) and phosphoinositide-dependent kinase 1 (PDK1) at the membrane, resulting in the phosphorylation of a host of other proteins. Using a melanoma progression model, we evaluated the impact of Timp1 and AKT silencing, as well as PI3K, PDK1, and protein kinase C (PKC) inhibitors on aggressiveness characteristics...
April 21, 2017: Cancers
https://www.readbyqxmd.com/read/28427045/mir-142-3p-overexpression-increases-chemo-sensitivity-of-nsclc-by-inhibiting-hmgb1-mediated-autophagy
#5
Yuqing Chen, Xin Zhou, Jianou Qiao, Aihua Bao
BACKGROUND: Non-small-cell lung cancer (NSCLC) is a deadly cancer with high mortality rate. Drug resistance represents a main obstacle in NSCLC treatment. High mobility group box-1 (HMGB1) protein promotes drug resistance in NSCLC cells by activating protective autophagy. METHODS: In the current study, we investigated the regulatory role of microRNA-142-3p (miR-142-3p) in HMGB1-mediated autophagy of NSCLC cells and its impact on drug resistance of NSCLC in vitro and in vivo...
March 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28423703/artocarpin-an-isoprenyl-flavonoid-induces-p53-dependent-or-independent-apoptosis-via-ros-mediated-mapks-and-akt-activation-in-non-small-cell-lung-cancer-cells
#6
Ming-Horng Tsai, Ju-Fang Liu, Yao-Chang Chiang, Stephen Chu-Sung Hu, Lee-Fen Hsu, Yu-Ching Lin, Zih-Chan Lin, Hui-Chun Lee, Mei-Chuan Chen, Chieh-Liang Huang, Chiang-Wen Lee
Artocarpin has been shown to exhibit cytotoxic effects on different cancer cells, including non-small cell lung carcinoma (NSCLC, A549). However, the underlying mechanisms remain unclear. Here, we explore both p53-dependent and independent apoptosis pathways in artocarpin-treated NSCLC cells. Our results showed that artocarpin rapidly induced activation of cellular protein kinases including Erk1/2, p38 and AktS473. Inhibition of these protein kinases prevented artocarpin-induced cell death. Moreover, artocarpin-induced phosphorylation of these protein kinases and apoptosis were mediated by induction of reactive oxygen species (ROS), as pretreatment with NAC (a ROS scavenger) and Apocynin (a Nox-2 inhibitor) blocked these events...
March 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423589/role-of-microrna-21-in-radiosensitivity-in-non-small-cell-lung-cancer-cells-by-targeting-pdcd4-gene
#7
Li-Peng Jiang, Chun-Yan He, Zhi-Tu Zhu
This study aims to explore the effects of microRNA-21 (miR-21) on radiosensitivity in non-small cell lung cancer (NSCLC) by targeting programmed cell deanth 4 (PDCD4) and regulating PI3K/AKT/mTOR signaling pathway. Cancer tissues and adjacent normal tissues were collected from 97 NSCLC patients who received a standard radiotherapy regimen. TUNEL assay was applied to determine cell apoptosis in tissues. The qRT-PCR assay was used to detect the expressions of miR-21 expression and PDCD4 mRNA. The protein expressions of PDCD4 and PI3K/AKT/mTOR signaling pathway-related proteins were determined by Western blotting...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423582/parthenolide-suppresses-non-small-cell-lung-cancer-glc-82-cells-growth-via-b-raf-mapk-erk-pathway
#8
Minting Lin, Hong Bi, Yanyan Yan, Wenjing Huang, Guiping Zhang, Genshui Zhang, Sili Tang, Yun Liu, Lingling Zhang, Jinxiang Ma, Jianye Zhang
Non-small cell lung cancer (NSCLC), one type of lung cancer, owns high rates of morbidity and mortality. B-Raf is one of the promising oncogenic drivers of NSCLC. Parthenolide, a natural product, is mainly extracted from the herbal plant Tanacetum parthenium. The effect of parthenolide on NSCLC cells and its potential as B-Raf inhibitor were studied in this study. It's shown that parthenolide exhibited the strong cytotoxicity against NSCLC cells with IC50 ranging from 6.07 ± 0.45 to 15.38 ± 1.13 μM. Parthenolide was also able to induce apoptosis, suppress proliferation and invasion in NSCLC cells...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415048/baicalein-increases-cisplatin-sensitivity-of-a549-lung-adenocarcinoma-cells-via-pi3k-akt-nf-%C3%AE%C2%BAb-pathway
#9
Meiling Yu, Benquan Qi, Wu Xiaoxiang, Jian Xu, Xiaolin Liu
Baicalein, a bioactive flavonoid, exhibits anti-inflammatory and anti-cancer activities. However, few studies reported the interaction of baicalein with chemotherapeutic agents. Our study showed that baicalein significantly enhanced the chemosensitivity of cisplatin (CDDP) in vivo and in vitro. We found that A549/CDDP (resistant to CDDP) cells not only acquired epithelial-mesenchymal transition (EMT) phenotype, but also showed increased NF-κB activity compared with A549 cells (sensitive to CDDP). Our study further demonstrated that PI3K/Akt/NF-κB pathway controlled CDDP resistance via EMT and NF-κB-mediated apoptosis...
April 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28413461/long-noncoding-rna-malat1-inhibits-apoptosis-induced-by-oxygen-glucose-deprivation-and-reoxygenation-in-human-brain-microvascular-endothelial-cells
#10
Jia-Wei Xin, Yu-Gang Jiang
Cerebral ischemia/reperfusion (I/R) injury leads to brain vascular dysfunction, which is characterized by endothelial cell injury or death. Long noncoding (lnc) RNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is reportedly associated with endothelial cell functions and dysfunctions. In the present study, the role of MALAT1 in I/R-induced cerebral vascular endothelial cell apoptosis was explored using oxygen-glucose deprivation and reoxygenation (OGD-R) as an in vitro I/R injury model. Primary human brain microvascular endothelial cells were cultured under OGD-R, and the expression levels of MALAT1 and cell apoptosis were measured at 6, 9, 12, 24 and 36 h post-reoxygenation...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28404902/mechanism-of-modulation-through-pi3k-akt-pathway-about-nepeta-cataria-l-s-extract-in-non-small-cell-lung-cancer
#11
Jiaxin Fan, Yongrui Bao, Xiansheng Meng, Shuai Wang, Tianjiao Li, Xin Chang, Guanlin Yang, Tao Bo
Non-small cell lung cancer (NSCLC) is regarded as one of the major intractable diseases, which was cured mainly by chemotherapeutics in the clinical treatment at present. But it is still a vital mission for the current medical and researchers that hunting a natural medicine which have little side effects and high-efficiency against the NSCLC on account of the shortcomings on current drugs. Nepeta cataria L. plays an important role in anti-cancer treatment according to the reports which was recorded in the Chinese Pharmacopoeia of version 2015 and belongs to one of the Traditional Chinese medicine (TCM)...
February 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28401012/nrsn2-promotes-osteosarcoma-cell-proliferation-and-growth-through-pi3k-akt-mtor-and-wnt-%C3%AE-catenin-signaling
#12
Ajimu Keremu, Xiayimaierdan Maimaiti, Abudusaimi Aimaiti, Maimaiaili Yushan, Yamuhanmode Alike, Yilizati Yilihamu, Aihemaitijiang Yusufu
Osteosarcoma is the most common bone cancer in children and adults. However, its pathogenesis, especially molecular mechanisms remain elusive. In current study, we screened GEO Database and found a poorly studied protein Neurensin-2 (NRSN2), which is highly expressed in osteosarcoma tissues. Neurensin-2 (NRSN2) is a small neuronal membrane protein and localized in small vesicles in neural cells, previous study found that it has been implicated in hepatocellular carcinoma (HCC) and non-small cell lung cancer (NSCLC)...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28393200/microrna-187-modulates-epithelial-mesenchymal-transition-by-targeting-ptrf-in-non-small-cell-lung-cancer
#13
Yanjun Cai, Jian Ruan, Xueqing Yao, Liang Zhao, Baocheng Wang
MicroRNAs (miRNAs) that negatively regulate gene expression play a key role in the development and progression of cancer. Aberrant expression of hsa-miR-187 (miR-187) has been reported in various malignancies. However, the function of miR-187 in tumor progression remains controversial and its role in non-small cell lung cancer (NSCLC) is poorly understood. In the present study, the role of miR-187 in the progression of NSCLC was investigated. Our results revealed that miR-187 was frequently upregulated in NSCLC tissues and cells...
April 3, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28391165/metapristone-suppresses-non-small-cell-lung-cancer-proliferation-and-metastasis-via-modulating-ras-raf-mek-mapk-signaling-pathway
#14
Guirong Zheng, Zhichun Shen, Hongning Chen, Jian Liu, Kai Jiang, Lulu Fan, Lee Jia, Jingwei Shao
BACKGROUND: Metastasis is the key phase of cancer progression that characterizes a more advanced stage and a poorer prognosis. The majority of cancer fatalities occur as a consequence of metastasis. OBJECTIVE: Mifepristone (RU486), a chemical abortifacient, has recently been used in clinical trials for psychotic depression and cancer chemotherapy. As the most predominant biological active metabolite of mifepristone, metapristone is being developed as a novel cancer metastasis chemopreventive agent by us...
April 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28386365/calpain-1-regulates-tgf-%C3%AE-1-induced-epithelial-mesenchymal-transition-in-human-lung-epithelial-cells-via-pi3k-akt-signaling-pathway
#15
Wei-Jun Tan, Qiu-Yue Tan, Ting Wang, Min Lian, Li Zhang, Zhen-Shun Cheng
Cell proliferation, transformation, and epithelial-mesenchymal transition (EMT) are key processes involved in the development of idiopathic pulmonary fibrosis (IPF). This study investigated the regulatory factors and signaling pathways that mediate EMT in the human type II alveolar epithelial A549 cell line. A549 cells were cultured in RPMI-1640 medium and allocated to the following four groups: blank control group or treated with transforming growth factor-β1 (TGF-β1), TGF-β1 + PD 150606 (a calpain 1 inhibitor), or PD 150606...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28385482/nicotine-promotes-cervical-carcinoma-cell-line-hela-migration-and-invasion-by-activating-pi3k-akt-nf-%C3%AE%C2%BAb-pathway-in-vitro
#16
Chengze Wang, Weiting Gu, Yunpeng Zhang, Yawen Ji, Yong Wen, Xin Xu
Cigarette smoking is one of highly risk factors of cervical cancer. Recently nicotine has been reported to increase proliferation and invasion in some smoking related cancers, like non-small cell lung cancer and esophageal squamous cell cancer. However, the effects and mechanisms of nicotine stimulation on cervical cancer cells are not clear. Here, we investigated the effects and mechanisms of nicotine stimulation on HeLa cells in vitro. In our study, we found that nicotine could accelerate HeLa cells migration and invasion, activate PI3K/Akt and NF-κB pathways and increase the expression of Vimentin in vitro...
April 3, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28382151/ct120-a-new-potential-target-for-c-myc-in-head-and-neck-cancers
#17
Elif Baltaci, Betül Seyhan, Onur Baykara, Nur Buyru
Background: CT120 is a universally expressed protein with seven transmembrane domains. It functions in cell proliferation, survival and apoptosis by activating Raf/MEK/ERK and PI3K/Akt signaling pathways. Evidence suggests that CT120 plays important roles in lung carcinogenesis and oncogenic pathway activation. c-Myc is an important transcription factor modulating cell progression, apoptosis and cellular transformation. Previous studies have shown that MYC gene is amplified in many types of cancer including head and neck squamous cell carcinoma (HNSCC)...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28382150/mir-93-promotes-tumorigenesis-and-metastasis-of-non-small-cell-lung-cancer-cells-by-activating-the-pi3k-akt-pathway-via-inhibition-of-lkb1-pten-cdkn1a
#18
Chunmei Li, Jianxin Lyu, Qing H Meng
BACKGROUND: Non-small cell lung cancer (NSCLC) accounts for approximately 85% of clinical lung cancer cases. MicroRNA-93 (miR-93) is an oncomiR in many types of human cancer, exerting pivotal effects in the development and progression of malignancies, including NSCLC. However, the mechanism underlying miR-93 involvement in NSCLC is unknown. Our purpose was to reveal and explain this mechanism, with the goal of contributing to the development of new diagnostic biomarkers and individualized therapeutic tools...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28378642/targeting-insulin-like-growth-factor-binding-protein-3-by-microrna-125b-promotes-tumor-invasion-and-poor-outcomes-in-non-small-cell-lung-cancer
#19
Hsiu-Hua Wang, Yao-Chen Wang, De-Wei Wu, Chin-Sheng Hung, Chih-Yi Chen, Huei Lee
Insulin-like growth factor-binding protein-3 acts as a tumor suppressor that inhibits the PI3K/AKT signaling pathway due to blocking insulin growth factor-1 binding to its receptor. We hypothesized that insulin-like growth factor-binding protein-3 might be targeted by microRNA-125b and promote tumor invasion and poor outcome in non-small-cell lung cancer via activation of the PI3K/AKT signaling pathway. Real-time polymerase chain reaction and immunohistochemistry were performed to determine the level of microRNA-125b, insulin-like growth factor-binding protein-3 messenger RNA, and phosphorylated-AKT expression in 105 tumors from non-small-cell lung cancer patients...
April 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28377766/host-genetic-background-strongly-affects-pulmonary-microrna-expression-before-and-during-influenza-a-virus-infection
#20
Matthias Preusse, Klaus Schughart, Frank Pessler
BACKGROUND: Expression of host microRNAs (miRNAs) changes markedly during influenza A virus (IAV) infection of natural and adaptive hosts, but their role in genetically determined host susceptibility to IAV infection has not been explored. We, therefore, compared pulmonary miRNA expression during IAV infection in two inbred mouse strains with differential susceptibility to IAV infection. RESULTS: miRNA expression profiles were determined in lungs of the more susceptible strain DBA/2J and the less susceptible strain C57BL/6J within 120 h post infection (hpi) with IAV (H1N1) PR8...
2017: Frontiers in Immunology
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