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https://www.readbyqxmd.com/read/28722353/auramine-o-an-incense-smoke-ingredient-promotes-lung-cancer-malignancy
#1
Jia-Chen Tung, Wei-Chien Huang, Juan-Cheng Yang, Guan-Yu Chen, Chi-Chen Fan, Yu-Chuan Chien, Pei-Shan Lin, Shih-Chun Candice Lung, Wei-Chao Chang
Burning incense to worship deities is a popular religious ritual in large parts of Asia, and is a popular custom affecting more than 1.5 billion adherents. Due to incomplete combustion, burning incense has been well recognized to generate airborne hazards to human health. However, the correlation between burning incense and lung cancer in epidemiological studies remains controversy. Therefore, we speculated that some unknown materials in incense smoke are involved in the initiation or progression of lung cancer...
July 19, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28720835/exophagy-of-annexin-a2-via-rab11-rab8a-and-rab27a-in-ifn-%C3%AE-stimulated-lung-epithelial-cells
#2
Ying-Da Chen, Yi-Ting Fang, Yi-Lin Cheng, Chiou-Feng Lin, Li-Jin Hsu, Shu-Ying Wang, Robert Anderson, Chih-Peng Chang, Yee-Shin Lin
Annexin A2 (ANXA2), a phospholipid-binding protein, has multiple biological functions depending on its cellular localization. We previously demonstrated that IFN-γ-triggered ANXA2 secretion is associated with exosomal release. Here, we show that IFN-γ-induced autophagy is essential for the extracellular secretion of ANXA2 in lung epithelial cells. We observed colocalization of ANXA2-containing autophagosomes with multivesicular bodies (MVBs) after IFN-γ stimulation, followed by exosomal release. IFN-γ-induced exophagic release of ANXA2 could not be observed in ATG5-silenced or mutant RAB11-expressing cells...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28719821/bcg-old-workhorse-new-skills
#3
REVIEW
M Gengenbacher, N E Nieuwenhuizen, She Kaufmann
Bacille Calmette-Guérin (BCG), the only tuberculosis (TB) vaccine in clinical practice, has limitations in efficacy, immunogenicity and safety. Much current TB vaccine research focuses on engineering live mycobacteria to interfere with phagosome biology and host intracellular pathways including apoptosis and autophagy, with candidates such as BCG Δzmp1, BCG ΔureC::hly, BCG::ESX-1(Mmar), Mtb ΔphoP ΔfadD26, Mtb ΔRD1 ΔpanCD and M. smegmatis Δesx-3::esx-3(Mtb) in the development pipeline. Correlates of protection in preclinical studies include increased central memory CD4(+) T cells and recruitment of antigen-specific T cells to the lungs, with mucosal vaccination found to be superior to parenteral vaccination...
July 15, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28716725/cardamonin-attenuates-lung-carcinoma-and-promotes-autophagy-via-targeting-p53-and-regulating-mtor
#4
Shasha Hou, Xiaoyao Yin, Ziling Wang, Jinhua Zhang, Qi Yuan, Zhinan Chen
As a chalcone extracted from Alpinia rafflesiana, Cardamonin has been reported to serve as anticancer agent and induces autophagy. This study was to elucidate the effects of Cardamonin on cell proliferation and autophagy and its potential mechanism in lung carcinoma cells. In this study, CCK-8 and MTT assay were carried out to examine the impact of Cardamonin on cell multiplication in vitro. Tumor cell growth and Ki-67 (a marker of proliferation) levels were observed in a murine model; Autophagy levels were monitored by western blot, quantitative PCR and transmission electron microscope in human lung cancer cells and tumor tissues...
July 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28707004/host-sirtuin-1-regulates-mycobacterial-immunopathogenesis-and-represents-a-therapeutic-target-against-tuberculosis
#5
Catherine Y Cheng, Nuria M Gutierrez, Mardiana B Marzuki, Xiaohua Lu, Taylor W Foreman, Bhairav Paleja, Bernett Lee, Akhila Balachander, Jinmiao Chen, Liana Tsenova, Natalia Kurepina, Karen W W Teng, Kim West, Smriti Mehra, Francesca Zolezzi, Michael Poidinger, Barry Kreiswirth, Deepak Kaushal, Hardy Kornfeld, Evan W Newell, Amit Singhal
Mycobacterium tuberculosis (Mtb) executes a plethora of immune-evasive mechanisms, which contribute to its pathogenesis, limited efficacy of current therapy, and the emergence of drug-resistant strains. This has led to resurgence in attempts to develop new therapeutic strategies/targets against tuberculosis (TB). We show that Mtb down-regulates sirtuin 1 (SIRT1), a nicotinamide adenine dinucleotide (NAD(+))-dependent deacetylase, in monocytes/macrophages, TB animal models, and TB patients with active disease...
March 2017: Science Immunology
https://www.readbyqxmd.com/read/28701864/induction-of-forkhead-class-box-o3a-and-apoptosis-by-a-standardized-ginsenoside-formulation-kg-135-is-potentiated-by-autophagy-blockade-in-a549-human-lung-cancer-cells
#6
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
https://www.readbyqxmd.com/read/28696570/effects-of-combined-lysosomal-and-mitochondrial-photodamage-in-a-non-small-cell-lung-cancer-cell-line-the-role-of-paraptosis
#7
David Kessel, John J Reiners
We previously reported that a low-level of lysosomal photodamage potentiated the phototoxic effect of subsequent mitochondrial photodamage mediated by the benzoporphyrin derivative BPD in murine hepatoma 1c1c7 cells. This was attributed to release of Ca(2+) from damaged lysosomes and a calpain-mediated conversion of the autophagy-related protein ATG5 to a pro-apoptotic fragment. We now report a comparison of these results with those obtained with the human non small-cell lung cancer A549 cell line. A549 cells contained lower levels of ATG5 and were less responsive than 1c1c7 cultures to the PDT combination...
July 11, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28693272/metformin-enhances-the-cytotoxicity-of-5-aminolevulinic-acid-mediated-photodynamic-therapy-in-vitro
#8
Tomohiro Osaki, Inoru Yokoe, Kiwamu Takahashi, Katsushi Inoue, Masahiro Ishizuka, Tohru Tanaka, Kazuo Azuma, Yusuke Murahata, Takeshi Tsuka, Norihiko Itoh, Tomohiro Imagawa, Yoshiharu Okamoto
The biguanide metformin is a drug widely used for the treatment of type 2 diabetes. Metformin enhances the cytotoxicity of chemotherapy by promoting the adenosine monophosphate-activated protein kinase (AMPK) autophagy signaling pathway. Photodynamic therapy (PDT) with 5-aminolevulinic acid (5-ALA), a precursor of protoporphyrin IX (PpIX), leads to apoptosis when PpIX accumulates in the mitochondria, and also leads to autophagy through activation of AMPK. In the present study, the effect of metformin in combination with 5-ALA-PDT was evaluated in vitro in KLN205 lung cancer cells...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28692436/andrographolide-enhances-cisplatin-mediated-anticancer-effects-in-lung-cancer-cells-through-blockade-of-autophagy
#9
Daolu Yuwen, Shanwei Mi, Yuzhu Ma, Wenjie Guo, Qiang Xu, Yan Shen, Yongqian Shu
Lung cancer is the most common cause of cancer-related death worldwide and the platinum-based drugs such as cisplatin have been used as the first line of the treatment. However, the clinical effectiveness of such chemotherapy is limited by intrinsic or acquired resistance. In this study, we found that cisplatin induced autophagy that attenuated the sensitivity of both A549 and Lewis lung cancer (LLC) cells to cisplatin. In contrast, the clinical drug andrographolide (Andro) suppressed autophagy and enhanced cisplatin-mediated apoptosis in these cells...
July 7, 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28689115/liposomal-honokiol-induced-lysosomal-degradation-of-hsp90-client-proteins-and-protective-autophagy-in-both-gefitinib-sensitive-and-gefitinib-resistant-nsclc-cells
#10
Jianhong Yang, Wenshuang Wu, Jiaolin Wen, Haoyu Ye, Hong Luo, Peng Bai, Minghai Tang, Fang Wang, Li Zheng, Shengyong Yang, Weimin Li, Aihua Peng, Li Yang, Li Wan, Lijuan Chen
Honokiol (HK), a natural chemical isolated from Mangnolia officinalis, has shown antitumorigenic activities when used to treat a variety of tumor cell lines. The mechanism of honokiol activity when used to treat gefitinib-sensitive and gefitinib-resistant non-small cell lung cancer (NSCLC) requires elucidation. Here, the presence of liposomal honokiol (LHK) induced apoptotic and antitumor activities in four xenograft models generated using NSCLC cell lines such as HCC827 (gefitinib-sensitive) and H1975 (gefitinib-resistant)...
July 4, 2017: Biomaterials
https://www.readbyqxmd.com/read/28678319/mir-146a-5p-level-in-serum-exosomes-predicts-therapeutic-effect-of-cisplatin-in-non-small-cell-lung-cancer
#11
D-L Yuwen, B-B Sheng, J Liu, W Wenyu, Y-Q Shu
OBJECTIVE: Lung cancer is the most common cause of death in cancer worldwide, and cisplatin plays an important role in its treatment. However, the response to chemotherapy is poorly attributable to drug resistance. Our present study aimed to investigate the relation of the exosomal miR-146a-5p level with the chemosensitivity of NSCLC to cisplatin and the molecular mechanism that miR-146a-5p mediated to effect on chemotherapy response. PATIENTS AND METHODS: The exosomes were isolated by ExoQuick kit...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28676644/blocking-autophagy-improves-the-anti-tumor-activity-of-afatinib-in-lung-adenocarcinoma-with-activating-egfr-mutations-in-vitro-and-in-vivo
#12
Xiangxiang Hu, Si Shi, Huan Wang, Xiaochen Yu, Qian Wang, Shanshan Jiang, Dianwen Ju, Li Ye, Meiqing Feng
Afatinib, a second-generation tyrosine kinase inhibitor (TKI), has been approved for the treatment of advanced EGFR-mutant non-small cell lung cancer (NSCLC). However, afatinib's clinical application is still hampered by acquired resistance. Recently, autophagy is considered as an important mechanism of resistance to TKI. Herein, we investigated the autophagy induction as well as its influence on anti-lung adenocarcinoma activity of afatinib in two activating EGFR-mutants H1975 and H1650 cells. First, Growth inhibition and caspase-dependent apoptosis were observed in afatinib-treated H1975 and H1650 cells...
July 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28674216/microrna-200c-increases-radiosensitivity-of-human-cancer-cells-with-activated-egfr-associated-signaling
#13
Taeryool Koo, Bong Jun Cho, Dan Hyo Kim, Ji Min Park, Eun Jung Choi, Hans H Kim, David J Lee, In Ah Kim
MicroRNA-200c (miR-200c) recently was found to have tumor-suppressive properties by inhibiting the epithelial-mesenchymal transition (EMT) in several cancers. miR-200c also interacts with various cellular signaling molecules and regulates many important signaling pathways. In this study, we investigated the radiosensitizing effect of miR-200c and its mechanism in a panel of human cancer cell lines. Malignant glioma (U251, T98G), breast cancer (MDA-MB-468), and lung carcinoma (A549) cells were transfected with control pre-microRNA, pre-miR-200c, or anti-miR-200c...
July 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28674213/the-protective-effects-of-carboxyhemoglobin-during-the-resuscitation-from-hemorrhagic-shock-in-rats
#14
Hongyu Liu, Songyan Yu, Yaojun Peng, Xin Chang, Xinguang Yu
AIM: This study was aimed to explore the effects of carboxyhemoglobin on reperfusion injury in hemorrhagic shock, as well as its action time and related mechanisms. RESULTS: CO-RBC group showed milder oxidative injury than O2-RBC group. CO reperfusion did not show advantages in functions of kidney and lung during resuscitation. The level of Bax was decreased in CO-RBC group, especially in early CO-RBC group. Moreover, the autophay-related gene Beclin-1 was down-regulated in CO-RBC and early CO-RBC groups...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28671960/stress-fibers-autophagy-and-necrosis-by-persistent-exposure-to-pm2-5-from-biomass-combustion
#15
Regina Dornhof, Christoph Maschowski, Anastasiya Osipova, Reto Gieré, Maximilian Seidl, Irmgard Merfort, Matjaz Humar
Fine particulate matter (PM2.5) can adversely affect human health. Emissions from residential energy sources have the largest impact on premature mortality globally, but their pathological and molecular implications on cellular physiology are still elusive. In the present study potential molecular consequences were investigated during long-term exposure of human bronchial epithelial BEAS-2B cells to PM2.5, collected from a biomass power plant. Initially, we observed that PM2.5 did not affect cellular survival or proliferation...
2017: PloS One
https://www.readbyqxmd.com/read/28668397/interleukin-6-c-ebp-%C3%AE-and-ppar-%C3%AE-expression-correlates-with-intramuscular-liposarcoma-growth-in-mice-the-impact-of-voluntary-physical-activity-levels
#16
Mohamad Assi, Moussa Kenawi, Mickaël Ropars, Amélie Rébillard
IL-6 is an axial cytokine overexpressed in cancer to promote growth and increase resistance to anti-cancer therapies. As the application of IL-6-targeting therapies are still limited, alternative non-aggressive and adjuvant approaches, like physical activity (PA) could be useful to reverse IL-6 effects. To get more insights into liposarcoma (LS) pathophysiology, we investigated potential molecular links between IL-6 and LS growth and we tested the impact of PA on such mechanism in an orthotopic model of intramuscular LS...
June 28, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28661479/ochratoxin-a-induced-autophagy-in-vitro-and-in-vivo-promotes-porcine-circovirus-type-2-replication
#17
Gang Qian, Dandan Liu, Junfa Hu, Fang Gan, Lili Hou, Xingxiang Chen, Kehe Huang
Ochratoxin A (OTA) is a mycotoxin produced by Aspergillus and Penicillium. Porcine circovirus type 2 (PCV2) is recognized as the causative agent of porcine circovirus-associated diseases. Recently, we reported that low doses of OTA promoted PCV2 replication in vitro and in vivo, but the underlying mechanism needed further investigation. The present studies further confirmed OTA-induced PCV2 replication promotion as measured by cap protein expression, viral titer, viral DNA copies and the number of infected cells...
June 29, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28653896/ganoderma-lucidum-targeting-lung-cancer-signaling-a-review
#18
REVIEW
Balraj Singh Gill, Navgeet, Sanjeev Kumar
Lung cancer causes huge mortality to population, and pharmaceutical companies require new drugs as an alternative either synthetic or natural targeting lung cancer. The conventional therapies cause side effects, and therefore, natural products are used as a therapeutic candidate in lung cancer. Chemical diversity among natural products highlights the impact of evolution and survival of fittest. One such neglected natural product is Ganoderma lucidum used for promoting health and longevity for a longer time...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28653878/sirtuin-6-plays-an-oncogenic-role-and-induces-cell-autophagy-in-esophageal-cancer-cells
#19
Nan Huang, Zhiwei Liu, Jiabei Zhu, Zhongqi Cui, Yuguang Li, Yongchun Yu, Fenyong Sun, Qiuhui Pan, Qingyuan Yang
Sirtuin 6, a member of sirtuin family, is generally regarded as a tumor suppressor as it participates in suppressing hypoxia-inducible factor 1α and MYC transcription activity by deacetylating H3K9 (histone H3 lysine 9) and H3K56 (histone H3 lysine) at promoters of target genes, leading to the aerobic glycolysis inhibition and cell growth suppression. However, its expression has recently been reported to be highly elevated in a series of tumors, including prostate cancer, breast cancer, and non-small cell lung cancer, indicating that sirtuin 6 plays dual roles in tumorigenicity in a cell/tumor type-specific manner...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28647611/autophagy-suppresses-isoprenaline-induced-m2-macrophage-polarization-via-the-ros-erk-and-mtor-signaling-pathway
#20
Meihua Shan, Junfang Qin, Fengjiao Jin, Xiao Han, Haitao Guan, Xiaoge Li, Jiahui Zhang, Hongyao Zhang, Yue Wang
The objective of this study was to examine the effect of autophagy on stress-induced M2 macrophage polarization in the tumor microenvironment of breast cancer and to determine whether the underlying mechanism was related to the reactive oxygen species (ROS)/ERK and mTOR pathway. In vitro, we found that the basal autophagy level in mouse RAW 264.7 macrophages decreased with the incubation of tumor cell culture supernatant. Similarly, the polarization of RAW 264.7 to M2 macrophages was inhibited by the autophagy inducer rapamycin and increased by the autophagy inhibitor 3-MA or by siBeclin1...
June 21, 2017: Free Radical Biology & Medicine
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