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Autophagy, apoptosis, lung cancer

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https://www.readbyqxmd.com/read/29328421/antitumor-activity-of-curcumin-by-modulation-of-apoptosis-and-autophagy-in-human-lung-cancer-a549-cells-through-inhibiting-pi3k-akt-mtor-pathway
#1
Furong Liu, Song Gao, Yuxuan Yang, Xiaodan Zhao, Yameng Fan, Wenxia Ma, Danrong Yang, Aimin Yang, Yan Yu
Curcumin is known to exhibit anticancer effects on various cancers with selective cytotoxicity in tumor cells. In the present study, the effects of curcumin‑induced multiple PCDs on human non‑small cell lung cancer (NSCLC) cells and the potential molecular mechanisms of apoptosis and autophagy triggered by curcumin via the PI3K/Akt/mTOR signaling pathway were explored, further confirmed by co‑culture of curcumin with mTOR blocker rapamycin and PI3K/Akt inhibitor LY294002. The anti‑proliferation effect of different stimulus was measured by MTT assay...
January 4, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29321496/genistein-promotes-ionizing-radiation-induced-cell-death-by-reducing-cytoplasmic-bcl-xl-levels-in-non-small-cell-lung-cancer
#2
Zhimin Zhang, Feng Jin, Xiaojuan Lian, Mengxia Li, Ge Wang, Baohua Lan, Hao He, Guo-Dong Liu, Yan Wu, Guiyin Sun, Cheng-Xiong Xu, Zhen-Zhou Yang
Genistein (GEN) has been previously reported to enhance the radiosensitivity of cancer cells; however, the detailed mechanisms remain unclear. Here, we report that GEN treatment inhibits the cytoplasmic distribution of Bcl-xL and increases nuclear Bcl-xL in non-small cell lung cancer (NSCLC). Interestingly, our in vitro data show that ionizing radiation IR treatment significantly increases IR-induced DNA damage and apoptosis in a low cytoplasmic Bcl-xL NSCLC cell line compared to that of high cytoplasmic Bcl-xL cell lines...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29312612/the-anti-cancer-effects-and-mechanisms-of-scutellaria-barbata-d-don-on-cl1-5-lung-cancer-cells
#3
Chin-Chuan Chen, Chun-Pin Kao, Mei-Miao Chiu, Shu-Huei Wang
Lung cancer, with a poor prognosis and resistance to chemotherapy, is the most common malignant tumor and has the highest mortality rate worldwide. Scutellaria barbata D. Don (SB), which is derived from the dried whole plant of Labiatae, is a well-known anti-inflammatory and anti-cancer herb. The aim of this study was to examine the anti-cancer effects and precise regulatory mechanisms of SB in CL1-5 lung cancer cells. In an in vitro assay, we found that the anti-tumor mechanism of SB was due to P38/SIRT1-regulated cell apoptosis through G2/M phase arrest and ER stress-, intrinsic mitochondrial-, and extrinsic FAS/FASL-mediated pathways...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29285270/metformin-alleviates-nickel-induced-autophagy-and-apoptosis-via-inhibition-of-hexokinase-2-activating-lipocalin-2-in-human-bronchial-epithelial-cells
#4
Yu-Ting Kang, Wen-Cheng Hsu, Chih-Hsien Wu, I-Lun Hsin, Pei-Ru Wu, Kun-Tu Yeh, Jiunn-Liang Ko
Autophagy is an intracellular recycling and degradation process for regulating tumor progression, survival and drug resistance. Nickel compounds have been identified as human carcinogens. However, the role of nickel-induced autophagy in lung carcinogenesis has not yet been fully elucidated. In this study, we determined that hexokinase 2 (HK2), which phosphorylates glucose and regulates autophagy, is the key mediator in nickel-induced autophagy in lung bronchial epithelial cells. We attempted to investigate the effects of the antidiabetic drug metformin on HK2 expression and lung cancer chemoprevention...
December 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/29248440/jtc801-induces-ph-dependent-death-specifically-in-cancer-cells-and-slows-growth-of-tumors-in-mice
#5
Xinxin Song, Shan Zhu, Yangchun Xie, Jiao Liu, Lingyi Sun, Dexing Zeng, Pengcheng Wang, Xiaochao Ma, Guido Kroemer, David L Bartlett, Timothy R Billiar, Michael Lotze, Herbert Zeh, Rui Kang, Daolin Tang
BACKGROUND & AIMS: Maintenance of acid-base homeostasis is required for normal physiology, metabolism, and development. It is not clear how cell death is activated in response to changes in pH. We performed a screen to identify agents that induce cell death in a pH-dependent manner (we call this alkaliptosis) in pancreatic ductal adenocarcinoma cancer (PDAC) cells and tested their effects in mice. METHODS: We screened a library of 254 compounds that interact with G protein-coupled receptors (GPCRs) to identify those with cytotoxic activity against a human PDAC cell line (PANC1)...
December 14, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29245957/glipizide-sensitizes-lung-cancer-cells-to-trail-induced-apoptosis-via-akt-mtor-autophagy-pathways
#6
Uddin Md Nazim, Ji-Hong Moon, You-Jin Lee, Jae-Won Seol, Yong Ju Kim, Sang-Youel Park
The combination of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) with subsidiary agents is a promising anticancer strategy to conquer TRAIL resistance in malignant cells. Glipizide is a second-generation oral hypoglycemic medicine for the cure of type II diabetes because of its capability to selectively stimulate insulin secretion from β-cells. In this study, we revealed that glipizide could trigger TRAIL-mediated apoptotic cell death in human lung adenocarcinoma cells. Pretreatment with glipizide downregulation of p-Akt and p-mTOR in different concentrations...
November 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/29240252/ganoderma-microsporum-immunomodulatory-protein-induces-apoptosis-and-potentiates-mitomycin-c-induced-apoptosis-in-urinary-bladder-urothelial-carcinoma-cells
#7
Sheng-Yuan Huang, Chih-Cheng Chien, Ruey-Shyang Hseu, Victoria Ying Jen Huang, Shang Ying Chiang, Chi-Jung Huang, Shao-Kuan Chen, Ru-Yin Tsai, Hsi-Ting Lin, Yu-Che Cheng
Current chemotherapy and immunotherapy treatments followed by transurethral resection for urinary bladder urothelial carcinoma (UC) usually suffers from poor prognosis and high recurrence rate. Design and modification of current formulation with the novel adjuvants is needed. A recombinant protein derived from Ganoderma microsporum named as Ganoderma microsporum immunomodulatory protein (GMIP) were used to treat UC cells. We found GMIP elicits a dose-dependent and time-dependent anti-UC cell proliferation effect, with a half-maximal inhibition concentration (IC50 ) comparable to mitomycin C (MMC), a commonly used chemotherapy agent...
December 14, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29212215/betanodavirus-b2-protein-triggers-apoptosis-and-necroptosis-in-lung-cancer-cells-that-suppresses-autophagy
#8
Hsuan-Wen Chiu, Yu-Chin Su, Jiann-Ruey Hong
The betanodavirus B2 protein targets the mitochondria and acts as a "death factor", but its effect on lung cancer cells is unknown. We examined the effect of the B2 protein on triggering apoptosis or necroptosis via P53-dependent and P53-independent pathways and increased in suppression of autophagy. The B2 protein targets the mitochondria of A549 (P53+/+) and H1299 (P53-/-) lung cancer cells due to a specific signal sequence (41RTFVISAHAA50). This triggers generation of reactive oxygen species within the mitochondria, and a minor stress response in A549 cells, but a strong stress response in H1299 cells...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29212196/juglanin-inhibits-lung-cancer-by-regulation-of-apoptosis-ros-and-autophagy-induction
#9
Liang Chen, Ya-Qiong Xiong, Jing Xu, Ji-Peng Wang, Zi-Li Meng, Yong-Qing Hong
Juglanin (Jug) is obtained from the crude extract of Polygonum aviculare, exerting suppressive activity against cancer cell progression in vitro and in vivo. Juglanin administration causes apoptosis and reactive oxygen species (ROS) in different types of cells through regulating various signaling pathways. In our study, the effects of juglanin on non-small cell lung cancer were investigated. A significant role of juglanin in suppressing lung cancer growth was observed. Juglanin promoted apoptosis in lung cancer cells through increasing Caspase-3 and poly ADP-ribose polymerase (PARP) cleavage, which is regulated by TNF-related apoptosis-inducing ligand/Death receptors (TRAIL/DRs) relied on p53 activation...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29212192/vorinostat-and-metformin-sensitize-egfr-tki-resistant-nsclc-cells-via-bim-dependent-apoptosis-induction
#10
Hengyi Chen, Yubo Wang, Caiyu Lin, Conghua Lu, Rui Han, Lin Jiao, Li Li, Yong He
There is a close relationship between low expression of BIM and resistance to epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI). Vorinostat is a pan-histone deacetylase inhibitor (HDACi) that augments BIM expression in various types of tumor cells, however, this effect is attenuated by the high expression of anti-apoptotic proteins in EGFR-TKI resistant non-small cell lung cancer (NSCLC) cells. Vorinostat in combination with metformin - a compound that can inhibit anti-apoptotic proteins expression, might cooperate to activate apoptotic signaling and overcome EGFR-TKI resistance...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29207165/combination-treatment-of-fty720-and-cisplatin-exhibits-enhanced-antitumour-effects-on-cisplatin-resistant-non-small-lung-cancer-cells
#11
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
https://www.readbyqxmd.com/read/29201217/curcumin-inhibits-the-development-of-non-small-cell-lung-cancer-by-inhibiting-autophagy-and-apoptosis
#12
Aili Wang, Jinxiang Wang, Shuming Zhang, Hongxia Zhang, Zhenyang Xu, Xiaohui Li
Among patients with primary lung cancer, 75-80% present with non-small cell lung cancer (NSCLC). However, there is a lack of studies into the potential preventive effects of curcumin against the activation of autophagy in NSCLC. Therefore, the present study primarily focused on the protective role of curcumin in NSCLC. It was demonstrated that curcumin decreased the viability of the human lung cancer cells lines, A549 and H1299, in a time-and dose-dependent manner (P<0.05). Treatment with curcumin also suppressed the colony formation capacities of A549 and H1299 cells...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29201061/selective-and-irreversible-induction-of-necroptotic-cell-death-in-lung-tumorspheres-by-short-term-exposure-to-verapamil-in-combination-with-sorafenib
#13
Juan Sebastian Yakisich, Yogesh Kulkarni, Neelam Azad, Anand Krishnan V Iyer
The presence of highly resistant cancer cells and the toxicity to normal cells are key factors that limit chemotherapy. Here, we used two models of highly resistant lung cancer cells: (1) adherent cells growing under prolonged periods of serum starvation (PPSS) and (2) cells growing as floating tumorspheres (FTs) to evaluate the effect of Verapamil (VP) in combination with Sorafenib (SF). Compared to cells growing under routine culture conditions (RCCs), PPPS cells or FTs were highly sensitive to short-term exposure (24 h) to VP 100 μM + SF 5 μM (VP100 + SF5)...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29185084/a-triazole-conjugated-benzoxazone-induces-reactive-oxygen-species-and-promotes-autophagic-apoptosis-in-human-lung-cancer-cells
#14
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...
November 28, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/29165042/suppressed-translation-as-a-mechanism-of-initiation-of-casp8-caspase-8-dependent-apoptosis-in-autophagy-deficient-nsclc-cells-under-nutrient-limitation
#15
Giulia Allavena, Francesca Cuomo, Georg Baumgartner, Tadeja Bele, Alexander Yarar Sellgren, Kyaw Soe Oo, Kaylee Johnson, Vladimir Gogvadze, Boris Zhivotovsky, Vitaliy O Kaminskyy
Macroautophagy/autophagy inhibition under stress conditions is often associated with increased cell death. We found that under nutrient limitation, activation of CASP8/caspase-8 was significantly increased in autophagy-deficient lung cancer cells, which precedes mitochondria outer membrane permeabilization (MOMP), CYCS/cytochrome c release, and activation of CASP9/caspase-9, indicating that under such conditions the activation of CASP8 is a primary event in the initiation of apoptosis as well as essential to reduce clonogenic survival of autophagy-deficient cells...
November 22, 2017: Autophagy
https://www.readbyqxmd.com/read/29130967/endoplasmic-reticulum-stress-promotes-autophagy-and-apoptosis-and-reduces-chemotherapy-resistance-in-mutant-p53-lung-cancer-cells
#16
Ping-Ping Gan, Yang-Ying Zhou, Mei-Zuo Zhong, Yun Peng, Li Li, Jian-Huang Li
BACKGROUND/AIMS: Lung cancer (LC) continues to be one of the most prevalent cancers around the world. During this study we aimed to investigate the involvement of endoplasmic reticulum stress (ERS) in autophagy, apoptosis, and chemotherapy resistance of mutant p53 LC cells. METHODS: Immunohistochemistry was employed to help determine the p53 mutation status of cancer cells from 92 primary LC patients, who were subsequently assigned to either the mutant p53 (n = 39) or wild-type p53 group (n = 53)...
November 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29118670/an-overview-of-the-role-of-platelets-in-angiogenesis-apoptosis-and-autophagy-in-chronic-myeloid-leukaemia
#17
REVIEW
Lisa Repsold, Roger Pool, Mohammed Karodia, Gregory Tintinger, Annie Margaretha Joubert
Amongst males, leukaemia is the most common cause of cancer-related death in individuals younger than 40 years of age whereas in female children and adolescents, leukaemia is the most common cause of cancer-related death. Chronic myeloid leukaemia (CML) is a chronic leukaemia of the haematopoietic stem cells affecting mostly adults. The disease results from a translocation of the Philadelphia chromosome in stem cells of the bone marrow. CML patients usually present with mild to moderate anaemia and with decreased, normal, or increased platelet counts...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/29109414/involvement-of-autophagy-in-the-outcome-of-mitotic-catastrophe
#18
Irina V Sorokina, Tatiana V Denisenko, Gabriela Imreh, Pyotr A Tyurin-Kuzmin, Vitaliy O Kaminskyy, Vladimir Gogvadze, Boris Zhivotovsky
Evading cell death is a major driving force for tumor progression that is one of the main problems in current cancer research. Mitotic catastrophe (MC) represents attractive platform compromising tumor resistance to current therapeutic modalities. MC appeared as onco-suppressive mechanism and is defined as a stage driving the cell to an irreversible destiny, i.e. cell death via apoptosis or necrosis. Our study highlights that MC induction in colorectal carcinoma cell lines ultimately leads to the autophagy followed by apoptosis...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29101677/simultaneous-detection-of-autophagy-and-epithelial-to-mesenchymal-transition-in-the-non-small-cell-lung-cancer-cells
#19
Javad Alizadeh, Shahla Shojaei, Adel Sepanjnia, Mohammad Hashemi, Eftekhar Eftekharpour, Saeid Ghavami
Autophagy is increasingly identified as a central player in many cellular activities from cell proliferation to cell division, migration, and differentiation. However, it is also considered as a double-edged sword in cancer biology which either promotes oncogenesis/invasion or sensitizes the tumor cells to chemotherapy induced apoptosis. Recent investigations have provided direct evidence for regulation of cellular phenotype via autophagy pathway. One of the most important types of phenotype conversion is Epithelial-Mesenchymal-Transition (EMT), resulting in alteration of epithelial cell properties to a more mesenchymal form...
November 4, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29100319/berberine-and-cinnamaldehyde-together-prevent-lung-carcinogenesis
#20
Mingjing Meng, Shengnan Geng, Zhenhua Du, Jingjing Yao, Yaqiu Zheng, Zibo Li, Zhenzhen Zhang, Jiahuan Li, Yongjian Duan, Gangjun Du
Starving tumor cells by restricting nutrient sources is a promising strategy for combating cancer. Because both berberine and cinnamaldehyde can activate AMP-activated protein kinase (AMPK, a sensor of cellular energy status), we investigated whether the combination of berberine and cinnamaldehyde could synergistically prevent lung carcinogenesis through tumor cell starvation. Urethane treatment induced lung carcinogenesis in mice, downregulated AMPK and mammalian target of rapamycin (mTOR) while upregulating aquaporin-1 (AQP-1) and nuclear factor kappa B (NF-κB)...
September 29, 2017: Oncotarget
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