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Cell Death & Disease

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https://www.readbyqxmd.com/read/28518151/disulfiram-copper-selectively-eradicates-aml-leukemia-stem-cells-in-vitro-and-in-vivo-by-simultaneous-induction-of-ros-jnk-and-inhibition-of-nf-%C3%AE%C2%BAb-and-nrf2
#1
Bing Xu, Shiyun Wang, Rongwei Li, Kai Chen, Lingli He, Manman Deng, Vinodh Kannappan, Jie Zha, Huijuan Dong, Weiguang Wang
Acute myeloid leukemia (AML) is a heterogeneous malignancy. Despite the advances in past decades, the clinical outcomes of AML patients remain poor. Leukemia stem cells (LSCs) is the major cause of the recurrence of AML even after aggressive treatment making, promoting development of LSC-targeted agents is an urgent clinical need. Although the antitumor activity of disulfiram (DS), an approved anti-alcoholism drug, has been demonstrated in multiple types of tumors including hematological malignancies such as AML, it remains unknown whether this agent would also be able to target cancer stem cells like LSCs...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518150/cycloheximide-promotes-paraptosis-induced-by-inhibition-of-cyclophilins-in-glioblastoma-multiforme
#2
Lin Wang, Justin H Gundelach, Richard J Bram
Cancer is the second leading cause of death worldwide. Current treatment strategies based on multi-agent chemotherapy and/or radiation regimens have improved overall survival in some cases. However, resistance to apoptosis often develops in cancer cells, and its occurrence is thought to contribute to treatment failure. Non-apoptotic cell death mechanisms have become of great interest, therefore, in hopes that they would bypass tumor cell resistance. Glioblastoma multiforme (GBM), a grade IV astrocytic tumor is the most frequent brain tumor in adults, and has a high rate of mortality...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518149/rnf138-deficiency-promotes-apoptosis-of-spermatogonia-in-juvenile-male-mice
#3
Longchang Xu, Yalan Lu, Deqiang Han, Rongyan Yao, Han Wang, Shunshun Zhong, Yanyun Luo, Ruiqin Han, Kai Li, Jun Fu, Shudong Zong, Shiying Miao, Wei Song, Linfang Wang
Spermatogenesis, the process by which haploid sperm cells are produced from a diploid precursor cell, is essential for sexual reproduction. Here, we report that RING-finger protein 138 (Rnf138) is highly expressed in testes, especially in spermatogonia and spermatocytes. The role of Rnf138 in spermatogenesis was examined using a Rnf138-knockout mouse model. Rnf138 deficiency resulted in increased apoptosis in spermatogenic cells, loss of proliferative spermatogonia, delayed development of spermatozoa and impaired fertility...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518148/hepatocyte-polyploidization-and-its-association-with-pathophysiological-processes
#4
REVIEW
Min-Jun Wang, Fei Chen, Joseph T Y Lau, Yi-Ping Hu
A characteristic cellular feature of the mammalian liver is the progressive polyploidization of the hepatocytes, where individual cells acquire more than two sets of chromosomes. Polyploidization results from cytokinesis failure that takes place progressively during the course of postnatal development. The proportion of polyploidy also increases with the aging process or with cellular stress such as surgical resection, toxic stimulation, metabolic overload, or oxidative damage, to involve as much as 90% of the hepatocytes in mice and 40% in humans...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518147/survivin-a-key-player-in-cancer-progression-increases-in-obesity-and-protects-adipose-tissue-stem-cells-from-apoptosis
#5
Miriam Ejarque, Victòria Ceperuelo-Mallafré, Carolina Serena, Gisela Pachón, Yaiza Núñez-Álvarez, Margarida Terrón-Puig, Enrique Calvo, Catalina Núñez-Roa, Wilfredo Oliva-Olivera, Francisco J Tinahones, Miguel Angel Peinado, Joan Vendrell, Sonia Fernández-Veledo
Adipose tissue (AT) has a central role in obesity-related metabolic imbalance through the dysregulated production of cytokines and adipokines. In addition to its known risk for cardiovascular disease and diabetes, obesity is also a major risk for cancer. We investigated the impact of obesity for the expression of survivin, an antiapoptotic protein upregulated by adipokines and a diagnostic biomarker of tumor onset and recurrence. In a cross-sectional study of 111 subjects classified by body mass index, circulating levels of survivin and gene expression in subcutaneous AT were significantly higher in obese patients and positively correlated with leptin...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518146/acyl-coa-thioesterase-7-is-involved-in-cell-cycle-progression-via-regulation-of-pkc%C3%AE-p53-p21-signaling-pathway
#6
Seung Hee Jung, Hyung Chul Lee, Hyun Jung Hwang, Hyun A Park, Young-Ah Moon, Bong Cho Kim, Hyeong Min Lee, Kwang Pyo Kim, Yong-Nyun Kim, Byung Lan Lee, Jae Cheol Lee, Young-Gyu Ko, Heon Joo Park, Jae-Seon Lee
Acyl-CoA thioesterase 7 (ACOT7) is a major isoform of the ACOT family that catalyzes hydrolysis of fatty acyl-CoAs to free fatty acids and CoA-SH. However, canonical and non-canonical functions of ACOT7 remain to be discovered. In this study, for the first time, ACOT7 was shown to be responsive to genotoxic stresses such as ionizing radiation (IR) and the anti-cancer drug doxorubicin in time- and dose-dependent manners. ACOT7 knockdown induced cytostasis via activation of the p53-p21 signaling pathway without a DNA damage response...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518145/cytoplasmic-rap1-mediates-cisplatin-resistance-of-non-small-cell-lung-cancer
#7
Lu Xiao, Xiaoying Lan, Xianping Shi, Kai Zhao, Dongrui Wang, Xuejun Wang, Faqian Li, Hongbiao Huang, Jinbao Liu
Cytotoxic chemotherapy agents (e.g., cisplatin) are the first-line drugs to treat non-small cell lung cancer (NSCLC) but NSCLC develops resistance to the agent, limiting therapeutic efficacy. Despite many approaches to identifying the underlying mechanism for cisplatin resistance, there remains a lack of effective targets in the population that resist cisplatin treatment. In this study, we sought to investigate the role of cytoplasmic RAP1, a previously identified positive regulator of NF-κB signaling, in the development of cisplatin resistance in NSCLC cells...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518144/microrna-23b-functions-as-an-oncogene-and-activates-akt-gsk3%C3%AE-%C3%AE-catenin-signaling-by-targeting-st7l-in-hepatocellular-carcinoma
#8
Likun Zhuang, Xin Wang, Zusen Wang, Xiang Ma, Bing Han, Hao Zou, Zehua Wu, Sheng Dong, Zhiqiang Qu, Yunjin Zang, Liqun Wu
Hepatocellular carcinoma (HCC) is a malignant tumor and threatens human life worldwide, whereas the etiology and pathogenesis of HCC have not been fully determined. In the past few years, many microRNAs (miRNAs) have been proved to have important roles in tumorigenesis of HCC. In this study, we found that miR-23b was significantly upregulated in tumor tissues of HCC patients. Functional tests showed that miR-23b could promote HCC cell proliferation and metastasis in vitro and in vivo. Then, mechanistic investigations suggested that ST7L was a direct target of miR-23b and involved in the promotion effects of miR-23b on HCC tumorigenesis and metastasis...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518143/calcium-sensing-receptor-protects-high-glucose-induced-energy-metabolism-disorder-via-blocking-gp78-ubiquitin-proteasome-pathway
#9
Yuehong Wang, Ping Gao, Can Wei, Hongzhu Li, Li Zhang, Yajun Zhao, Bo Wu, Ye Tian, Weihua Zhang, Lingyun Wu, Rui Wang, Changqing Xu
Diabetic cardiomyopathy (DCM) is a major complication and fatal cause of the patients with diabetes. The calcium sensing receptor (CaSR) is a G protein-coupled receptor, which is involved in maintaining calcium homeostasis, regulating cell proliferation and apoptosis, and so on. In our previous study, we found that CaSR expression, intracellular calcium levels and cardiac function were all significantly decreased in DCM rats; however, the exact mechanism are not clear yet. The present study revealed the protective role of CaSR in myocardial energy metabolism disorder induced by high glucose (HG) as well as the underlying mechanism...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518142/mir-130a-3p-attenuates-activation-and-induces-apoptosis-of-hepatic-stellate-cells-in-nonalcoholic-fibrosing-steatohepatitis-by-directly-targeting-tgfbr1-and-tgfbr2
#10
Yang Wang, Jinghua Du, Xuemin Niu, Na Fu, Rongqi Wang, Yuguo Zhang, Suxian Zhao, Dianxing Sun, Yuemin Nan
Nonalcoholic fibrosing steatohepatitis is a uniform process that occurs throughout nonalcoholic fatty liver disease (NAFLD). MicroRNAs (miRNAs) have been shown to be involved in the biological processes, but the role and molecular mechanism of miRNAs in NAFLD are not entirely clear. In this study, we observed a significant reduction in the expression of miR-130a-3p in livers of a mouse model with fibrosis induced by a methionine-choline-deficient diet, of NAFLD patients, and in activated hepatic stellate cells (HSCs)...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518141/caf-secreted-cxcl1-conferred-radioresistance-by-regulating-dna-damage-response-in-a-ros-dependent-manner-in-esophageal-squamous-cell-carcinoma
#11
Hongfang Zhang, Jing Yue, Zhenzhen Jiang, Rongjing Zhou, Ruifei Xie, Yiping Xu, Shixiu Wu
Five-year survival rate of esophageal squamous cell carcinoma (ESCC) patients treated with radiotherapy is <20%. Our study aimed to investigate whether cancer-associated fibroblasts (CAFs), one major component of tumor microenvironment, were involved in tumor radioresistance in ESCC. By use of human chemokine/cytokine array, human chemokine CXCL1 was found to be highly expressed in CAFs compared with that in matched normal fibroblasts. Inhibition of CXCL1 expression in CAFs significantly reversed CAF-conferred radioresistance in vitro and in vivo...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518140/a-mirna-101-3p-bim-axis-as-a-determinant-of-serum-deprivation-induced-endothelial-cell-apoptosis
#12
Ji-Hee Kim, Dong-Keon Lee, Joohwan Kim, Seunghwan Choi, Wonjin Park, Kwon-Soo Ha, Tae-Hoon Kim, Jongseon Choe, Moo-Ho Won, Young-Guen Kwon, Young-Myeong Kim
Serum deprivation or withdrawal induces apoptosis in endothelial cells, resulting in endothelial cell dysfunction that is associated with cardiovascular disease. However, there is still limited information on the role of miRNA in serum deprivation-induced apoptosis. Here we found that serum deprivation increased caspase-dependent apoptosis through miRNA-101-3p downregulation, without altering expression of its host gene RNA 3'-terminal phosphate cyclase-like 1, which was highly correlated with suppressed expression levels of Dicer and Argonaute 2 (Ago2), indicating that miR-101-3p is post-transcriptionally elevated in serum-deprived conditions...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518139/mir-106b-and-mir-93-regulate-cell-progression-by-suppression-of-pten-via-pi3k-akt-pathway-in-breast-cancer
#13
Nana Li, Yuan Miao, Yujia Shan, Bing Liu, Yang Li, Lifen Zhao, Li Jia
Accumulating evidences have revealed that dysregulated microRNAs (miRNAs) involve in the tumorigenesis, progression and even lead to poor prognosis of various carcinomas, including breast cancer. MiRNA-106b-5p (miR-106b) and miRNA-93-5p (miR-93) levels were confirmed to be significantly upregulated in breast cancer clinical samples (n=36) and metastatic cell line (MDA-MB-231) compared with those in the paired adjacent tissues and normal breast epithelial cell line (MCF-10A). Moreover, further research stated that the capability of migration, invasion and proliferation changed along with the altered expression of miR-106b and miR-93 in breast cancer...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518138/betulin-exhibits-anti-inflammatory-activity-in-lps-stimulated-macrophages-and-endotoxin-shocked-mice-through-an-ampk-akt-nrf2-dependent-mechanism
#14
Xinxin Ci, Junfeng Zhou, Hongming Lv, Qinlei Yu, Liping Peng, Shucheng Hua
Continued oxidative stress can lead to chronic inflammation, which in turn could mediate most chronic diseases including cancer. Nuclear factor erythroid 2-related factor (Nrf2), a critical transcriptional activator for antioxidative responses, has envolved to be an attractive drug target for the treatment or prevention of human diseases. In the present study, we investigated the effects and mechanisms of betulin on Nrf2 activation and its involvement in the lipopolysaccharide (LPS)-triggered inflammatory system...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518137/nerve-growth-factor-from-chinese-cobra-venom-stimulates-chondrogenic-differentiation-of-mesenchymal-stem-cells
#15
Zhenhui Lu, Danqing Lei, Tongmeng Jiang, Lihui Yang, Li Zheng, Jinmin Zhao
Growth factors such as transforming growth factor beta1 (TGF-β1), have critical roles in the regulation of the chondrogenic differentiation of mesenchymal stem cells (MSCs), which promote cartilage repair. However, the clinical applications of the traditional growth factors are limited by their high cost, functional heterogeneity and unpredictable effects, such as cyst formation. It may be advantageous for cartilage regeneration to identify a low-cost substitute with greater chondral specificity and easy accessibility...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518136/corrigendum-intraventricular-injections-of-mesenchymal-stem-cells-activate-endogenous-functional-remyelination-in-a-chronic-demyelinating-murine-model
#16
Pablo Cruz-Martinez, Susana González-Granero, María Micaela Molina-Navarro, Jesus Pacheco-Torres, Jose Manuel García-Verdugo, Emilio Geijo-Barrientos, Jonathan Jones, Salvador Martinez
This corrects the article DOI: 10.1038/cddis.2016.130.
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518135/rack1-depletion-in-the-ribosome-induces-selective-translation-for-non-canonical-autophagy
#17
Hag Dong Kim, EunBin Kong, YongJoong Kim, Jin-Soo Chang, Joon Kim
RACK1, which was first demonstrated as a substrate of PKCβ II, functions as a scaffold protein and associates with the 40S small ribosomal subunit. According to previous reports, ribosomal RACK1 was also suggested to control translation depending on the status in translating ribosome. We here show that RACK1 knockdown induces autophagy independent of upstream canonical factors such as Beclin1, Atg7 and Atg5/12 conjugates. We further report that RACK1 knockdown induces the association of mRNAs of LC3 and Bcl-xL with polysomes, indicating increased translation of these proteins...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28518134/asic1-and-asic3-contribute-to-acidity-induced-emt-of-pancreatic-cancer-through-activating-ca-2-rhoa-pathway
#18
Shuai Zhu, Hai-Yun Zhou, Shi-Chang Deng, Shi-Jiang Deng, Chi He, Xiang Li, Jing-Yuan Chen, Yan Jin, Zhuang-Li Hu, Fang Wang, Chun-You Wang, Gang Zhao
Extracellular acid can have important effects on cancer cells. Acid-sensing ion channels (ASICs), which emerged as key receptors for extracellular acidic pH, are differently expressed during various diseases and have been implicated in underlying pathogenesis. This study reports that ASIC1 and ASIC3 are mainly expressed on membrane of pancreatic cancer cells and upregulated in pancreatic cancer tissues. ASIC1 and ASIC3 are responsible for an acidity-induced inward current, which is required for elevation of intracellular Ca(2+) concentration ([Ca(2+)]i)...
May 18, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28492560/mir-218-5p-restores-sensitivity-to-gemcitabine-through-prkce-mdr1-axis-in-gallbladder-cancer
#19
Hui Wang, Ming Zhan, Sun-Wang Xu, Wei Chen, Man-Mei Long, Yong-Heng Shi, Qiang Liu, Man Mohan, Jian Wang
Gallbladder cancer (GBC) is one of the most common malignancy of the biliary tract characterized by its high chemoresistant tendency. Although great progresses have been made in recent decades for treating many cancers with anticancer drugs, effective therapeutics methods for anti-GBC are still lacking. Therefore, investigations into identifying the mechanisms underlying the drug resistance of GBC are greatly needed. In this study, we show that miR-218-5p plays a critical role in gemcitabine resistance of GBC...
May 11, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28492559/mk2206-enhances-the-cytocidal-effects-of-bufalin-in-multiple-myeloma-by-inhibiting-the-akt-mtor-pathway
#20
Ru-Fang Xiang, Yan Wang, Nan Zhang, Wen-Bin Xu, Yang Cao, Jia Tong, Jun-Min Li, Ying-Li Wu, Hua Yan
Despite the development of promising cancer therapeutic drugs, multiple myeloma (MM) remains an incurable disease. Bufalin is a bufanolide steroid compound of the traditional Chinese medicine Chan Su that was previously shown to exert growth suppression effects on myeloma cell lines. Previous studies conducted by our group demonstrated that bufalin activated the AKT/mTOR pathway in myeloma cells, which is considered an essential pathway to disease progression and is related to drug resistance in MM. In view of the significant role of AKT in MM, the allosteric AKT inhibitor MK2206 was selected in order to enhance the antitumor effects of bufalin in different MM cell lines (NCI-H929, U266, LP-1 and RPMI8226)...
May 11, 2017: Cell Death & Disease
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