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Lc3-1, autophagy,apoptosis, lung

Tongwang Yang, Tao Wu, Liping Lv, Zhiqiang Zhang, Dongjie Liu, Jianji Xu, Dexi Chen, Gang Wu
Nanoparticles were used as ideal carrier for its passive and active targeting property. Unfortunately, many of them were failed for its biotoxicology. Thus, find a safe and targeted drug delivery was the new goal of pharmaceutical industries. Here, A549 and H1299 cells were exposed to ceria oxide nanoparticles, silicon oxide nanoparticles and zinc oxide nanoparticles for 12 h to induce autophagy and late apoptosis. Rats were exposed to ceria oxide nanoparticles (20 mg/kg · bw) for 1, 7, 14 or 28 days to induce lung injury and cytokines change...
June 1, 2018: Journal of Nanoscience and Nanotechnology
Jun Ma, Kaiming Wu, Kuanzhi Liu, Rong Miao
OBJECTIVE: To explore the ability of MALAT1 to influence non-small cell lung cancer (NSCLC) A549 cells in vitro and tumor xenograft growth in vivo by modulating autophagy. METHODS: LncRNA MALAT-1 in normal HBE cells and human NSCLC cells was measured. A549 cells were treated with si-MALAT-1, negative control and si-MALAT-1 + rapamycin. The mRNA levels of MALAT-1, P62 and LC3 was determined by the qRT-PCR and the protein levels of autophagy-related proteins by the western blotting...
January 29, 2018: Cancer Biomarkers: Section A of Disease Markers
Ruiliang Chu, Jiuling Wang, Yang Bi, Guoxin Nan
BACKGROUND CONTEXT: Lung injury is a major cause of respiratory complications following an acute spinal cord injury (ASCI), which are associated with a high mortality rate. Autophagy has been shown to be involved in a variety of lung diseases; however, Whether autophaphy is activated in the lung following ASCI remains unknown. PURPOSE: The objective of this study was to investigate the induction of autophagy in the lung after ASCI. STUDY DESIGN: This is an experimental animal study of ASCI investigating kinetics of autophagy in the lung following ASCI...
January 17, 2018: Spine Journal: Official Journal of the North American Spine Society
Yao-Lung Liu, Kuan-Ho Lin, Shanmugam Tamilselvi, Wei-Kung Chen, Chia-Yao Shen, Ray-Jade Chen, Cecilia Hsuan Day, Hsi-Chin Wu, Vijaya Padma Viswanadha, Chih-Yang Huang
BACKGROUND/AIM: In chronic kidney disease (CKD), kidneys fail to maintain phosphorus homeostasis in serum. Elevated phosphorus levels in serum have been associated with cardiovascular diseases in CKD patients and in normal individuals. In this study, we evaluated the level of autophagy- and apoptosis-related markers under different concentrations of hyperphosphate in myocardial cells. METHODS: Modulation inflicted on the levels of various survival-, autophagy-, and apoptosis-related markers were determined by Western blotting analysis using total protein extract...
December 2017: Cardiorenal Medicine
Yang Li, Tinghua Hu, Tianjun Chen, Tian Yang, Hui Ren, Mingwei Chen
A major common medical treatment for lung carcinoma is cisplatin (DDP)-based therapy. However, the development or existence of chemoresistance frequently blocks its effectiveness. Currently, autophagy is recognised as a potential anticancer strategy, although there is controversy over its role in the development of cancer. In lung carcinoma, no studies of autophagy induced by FTY720, a sphingosine 1-phosphate analog and a novel immunosuppressant drug, have been published, while apoptosis has been shown to be induced by FTY720 in several cancer cell lines...
February 2018: Oncology Reports
Chang-Heng Hsieh, Jing-Ping Wang, Chien-Chih Chiu, Chun-Yen Liu, Ching-Fa Yao, Kang Fang
Numerous approaches suggested that compounds with conjugated triazole moieties or benzoxazone pharmacores are effective to antagonize proliferation of human tumors. The current study reported that a synthetic triazole-conjugated benzoxazone, 4-((5-benzyl-1H-1,2,3-triazol-3-yl)-methyl)-7-methoxy-2H-benzo[b][1,4]-oxazin-3(4H)-one (BTO), inhibited growth rates of human non-small cell lung cancer cells. The cytotoxicity can be enhanced with increasing drug concentrations. More evidence supported that the induced reactive oxygen species lead to ultimate apoptotic cell death by recruiting autophagy...
January 2018: Apoptosis: An International Journal on Programmed Cell Death
Menglu Zhou, Shuying Shen, Xin Zhao, Xingguo Gong
Autophagy has attracted a great deal of interest in tumour therapy research in recent years. However, the anticancer effect of luteoloside, a naturally occurring flavonoid isolated from the medicinal plant Gentiana macrophylla, on autophagy remains poorly understood in human lung cells. In the present study, we have investigated the anticancer effects of luteoloside on non-small cell lung cancer (NSCLC) cells and demonstrated that luteoloside effectively inhibited cancer cell proliferation, inducing G0 /G1 phase arrest associated with reduced expression of CyclinE, CyclinD1 and CDK4; we further found that treatment with luteoloside did not strongly result in apoptotic cell death in NSCLC (A549 and H292) cells...
December 9, 2017: Biochemical and Biophysical Research Communications
Yao Tang, Qi-Hang Cai, Yong-Jian Wang, Shao-Hua Fan, Zi-Feng Zhang, Meng-Qi Xiao, Jin-Yu Zhu, Dong-Mei Wu, Jun Lu, Yuan-Lin Zheng
During the present study, we explored the protective effects of autophagy on endoplasmic reticulum (ER) stress (ERS) induced apoptosis belonging to alveolar epithelial cells (AECs) in rat models with chronic obstructive pulmonary disease (COPD). Fifty-six 12-week-old male Sprague-Dawley (SD) rats were randomly assigned into the COPD group (rats exposed to cigarette smoke (CS)), the 3-methyladenine (3-MA) intervention group (COPD rats were administrated with 10 mg/kg autophagy inhibitors), the chloroquine (CQ)-intervention group (COPD rats were administrated 40 mg/kg CQ), and the control group (rats breathed in normal saline)...
December 22, 2017: Bioscience Reports
Yanlin Song, Lingqi Kong, Bin Sun, Lei Gao, Peng Chu, Anil Ahsan, Eskandar Qaed, Yuan Lin, Jinyong Peng, Xiaodong Ma, Jianbin Zhang, Shisheng Wang, Zeyao Tang
The signal transducers and activators of transcription 3 (STAT3) signaling pathway is a common feature in many solid tumors including non-small cell lung cancer, whereas current therapies usually fail to treat this disease in majority of cases. In the present study, we aimed to investigate the cytotoxic effect and the underlying mechanisms of SZC017, an oleanolic acid derivative, on human lung cancer cells. Cell viability was significantly decreased in SZC017-treated lung cancer cells. Mechanistically, SZC017 reduced A549 cell viability by activating both apoptosis and autophagy pathways...
September 7, 2017: Cell Biology International
You-Cheng Hseu, Tai-Jung Tsai, Mallikarjuna Korivi, Jer-Yuh Liu, Hui-Jye Chen, Chung-Ming Lin, Yi-Chun Shen, Hsin-Ling Yang
Coenzyme Q0 (CoQ0, 2,3-dimethoxy-5-methyl-1,4-benzoquinone) has been reported to exert anticancer properties against human breast/lung cancer cells. This study investigated the in vitro and in vivo anticancer properties of CoQ0 on human ovarian carcinoma (SKOV-3) cells and xenografted nude mice, and revealed the underlying molecular mechanism. CoQ0 induced G2/M arrest through downregulation of cyclin B1/A and CDK1/K2 expressions. CoQ0-induced autophagy as a survival mechanism was evidenced by increased accumulation of LC3-II, GFP-LC3 puncta, AVOs formation and Beclin-1/Bcl-2 dysregulation...
August 14, 2017: Scientific Reports
Hyun Jin Jung, Ju-Hee Kang, Seungho Choi, Youn Kyoung Son, Kang Ro Lee, Je Kyung Seong, Sun Yeou Kim, Seung Hyun Oh
ETHNOPHARMACOLOGICAL RELEVANCE: Pharbitis Nil (PN) is used as a main component of the existing drug, DA-9701, which was developed to treat functional dyspepsia (FD) in Korea. PN extracts isolated from its seeds have been reported to have anticancer effects. AIM OF THE STUDY: The purpose of this study was to investigate the underlying mechanism of the chemotherapeutic effects of PN in lung cancer cells. MATERIALS AND METHODS: We performed MTT assays, colony formation assays, flow cytometry assays, Western blot analysis, reverse transcription-polymerase chain reaction (RT-PCR), immunofluorescence analysis, and cell counting assays to study the molecular mechanism of chemotherapeutic effects of PN in lung cancer cells...
July 18, 2017: Journal of Ethnopharmacology
Chih-Jung Yao, Jyh-Ming Chow, Shuang-En Chuang, Chia-Lun Chang, Ming-De Yan, Hsin-Lun Lee, I-Chun Lai, Pei-Chun Lin, Gi-Ming Lai
BACKGROUND: KG-135, a standardized formulation enriched with Rk1, Rg3, and Rg5 ginsenosides, has been shown to inhibit various types of cancer cells; however, the underlying mechanisms are not fully understood. In this study, we explored its effects in A549 human lung cancer cells to investigate the induction of Forkhead Class box O3a (FOXO3a) and autophagy. METHODS: Cell viability was determined by sulforhodamine B staining. Apoptosis and cell cycle distribution were analyzed using flow cytometry...
July 2017: Journal of Ginseng Research
Yu-Tsai Lin, Hung-Chen Wang, Yi-Chiang Hsu, Chung-Lung Cho, Ming-Yu Yang, Chih-Yen Chien
Capsaicin is a potential chemotherapeutic agent for different human cancers. In Southeast China, nasopharyngeal carcinoma (NPC) has the highest incidence of all cancers, but final treatment outcomes are unsatisfactory. However, there is a lack of information regarding the anticancer activity of capsaicin in NPC cells, and its effects on the signaling transduction pathways related to apoptosis and autophagy remain unclear. In the present study, the precise mechanisms by which capsaicin exerts anti-proliferative effects, cell cycle arrest, autophagy and apoptosis were investigated in NPC-TW01 cells...
June 23, 2017: International Journal of Molecular Sciences
Yang Wang, Jing Zhang, Zhi-Hao Huang, Xiao-Hui Huang, Wei-Bin Zheng, Xing-Feng Yin, Yao-Lan Li, Bin Li, Qing-Yu He
Isodeoxyelephantopin (ESI), isolated from Elephantopus scaber L. has been reported to exert anticancer effects. In this study, we aimed to investigate whether and how cancer cells exert protective responses against ESI treatment. Confocal fluorescence microscopy showed that ESI significantly induced autophagy flux in the lung cancer cells expressing mCherry-EGFP-LC3 reporter. Treatment of the cells with ESI increased the expression levels of the autophagy markers including LC3-II, ATG3 and Beclin1 in a dose-dependent manner...
June 15, 2017: Cell Death & Disease
Yinfeng Kang, Runyu Yuan, Bin Xiang, Xiaqiong Zhao, Pei Gao, Xu Dai, Ming Liao, Tao Ren
In this study, we investigated the role of autophagy and apoptosis in Newcastle disease virus (NDV)-infected chicken cells and tissues. NDV-infected and starvation-induced chick embryo fibroblasts (CEF) cells showed higher autophagosome formation than mock-infected CEF cells on transmission electron microscopy. The NDV-infected CEF cells showed enhanced conversion of microtubule-associated protein 1 light chain 3-I (LC3-I) to LC3-II and degradation of p62/SQSTM1. The diminished conversion of LC3-I to LC3-II and cleaved caspase 3 and poly (ADP-ribose) polymerase (PARP) in ultraviolet-inactivated NDV-infected cells suggested that autophagosome formation was necessary for NDV replication...
May 25, 2017: Oncotarget
Eugene Roscioli, Hai B Tran, Hubertus Jersmann, Phan T Nguyen, Emily Hopkins, Susan Lester, Nigel Farrow, Peter Zalewski, Paul N Reynolds, Sandra Hodge
The proper regulation of zinc (Zn) trafficking proteins and the cellular distribution of Zn are critical for the maintenance of autophagic processes. However, there have been no studies that have examined Zn dyshomeostasis and the disease-related modulation of autophagy observed in the airways afflicted with chronic obstructive pulmonary disease (COPD). We hypothesized that dysregulated autophagy in airway epithelial cells (AECs) is related to Zn dysregulation in cigarette smoke (CS)-induced COPD. We applied a human ex vivo air-liquid interface model, a murine model of smoke exposure, and human lung tissues and investigated Zn, ZIP1, and ZIP2 Zn-influx proteins, autophagy [microtubule-associated 1A/1B-light chain-3 (LC3), Beclin-1], autophagic flux (Sequestosome), apoptosis [Bcl2; X-linked inhibitor of apoptosis (XIAP), poly (ADP)-ribose polymerase (PARP)], and inflammation [thymic stromal lymphopoietin (TSLP), regulated on activation, normal T cell expressed and secreted (RANTES), and IL-1β]...
September 1, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
Hong Yuan, Zi-Ming Li, Jiaxiang Shao, Wen-Xiang Ji, Weiliang Xia, Shun Lu
BACKGROUND: Autophagy is a conserved catabolic process to degrade cellular organelles. The role of autophagy in cancer development is complex. Amplification of fibroblast growth factor receptor 1 (FGFR1) is one of the most frequent targets in lung squamous cell carcinoma (SQCC). Whether fibroblast growth factor 2 (FGF2)/FGFR1 contributes to the regulation of autophagy remains elusive. METHODS: Autophagic activity was evaluated by immunoblotting for microtubule-associated protein 1 light chain 3 (LC3), formation of GFP-LC3 puncta, and monodansylcadaverine (MDC) staining...
May 30, 2017: Journal of Experimental & Clinical Cancer Research: CR
En-Xia Wang, Bo-Yang Zou, Lei Shi, Lin-Ying Du, Yan-Yan Zhu, Ya-Meng Jiang, Xiao-Dong Ma, Xiao-Hui Kang, Chang-Yuan Wang, Yu-Hong Zhen, Li-Dan Sun
AIMS: To investigate the antitumor effects of 7-O-geranylquercetin (GQ), a novel O-alkylated derivative of quercetin, against non-small cell lung cancer (NSCLC) cell lines A549 and NCI-H1975 and the corresponding mechanisms. MAIN METHODS: Cell viability was assessed using MTT assay. The expression of proteins involved in apoptosis and autophagy was measured using western blotting. Besides, apoptosis was determined with DAPI staining, Annexin V-PI staining and transmission electron microscopy (TEM) assay, and autophagy was observed with TEM assay...
July 1, 2017: Life Sciences
Zheng-Hai Tang, Wen-Xiang Cao, Zhao-Yu Wang, Jia-Hong Lu, Bo Liu, Xiuping Chen, Jin-Jian Lu
Chelerythrine (CHE), a natural benzo[c]phenanthridine alkaloid, shows anti-cancer effect through a number of mechanisms. Herein, the effect and mechanism of the CHE-induced autophagy, a type II programmed cell death, in non-small cell lung cancer (NSCLC) cells were studied for the first time. CHE induced cell viability decrease, colony formation inhibition, and apoptosis in a concentration-dependent manner in NSCLC A549 and NCI-H1299 cells. In addition, CHE triggered the expression of phosphatidylethanolamine-modified microtubule-associated protein light-chain 3 (LC3-II)...
August 2017: Redox Biology
Sophia P M Sok, Norhafiza M Arshad, Mohamad Nurul Azmi, Khalijah Awang, Bulent Ozpolat, Noor Hasima Nagoor
Autophagy plays a role in deciding the fate of cells by inducing either survival or death. 1'S-1-acetoxychavicol acetate (ACA) is a phenylpropanoid isolated from rhizomes of Alpinia conchigera and has been reported previously on its apoptotic effects on various cancers. However, the effect of ACA on autophagy remains ambiguous. The aims of this study were to investigate the autophagy-inducing ability of ACA in human non-small cell lung cancer (NSCLC), and to determine its role as pro-survival or pro-death mechanism...
2017: PloS One
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