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Cell Death Discovery

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https://www.readbyqxmd.com/read/28924490/the-lauric-acid-activated-signaling-prompts-apoptosis-in-cancer-cells
#1
Rosamaria Lappano, Anna Sebastiani, Francesca Cirillo, Damiano Cosimo Rigiracciolo, Giulia Raffaella Galli, Rosita Curcio, Roberta Malaguarnera, Antonino Belfiore, Anna Rita Cappello, Marcello Maggiolini
The saturated medium-chain fatty-acid lauric acid (LA) has been associated to certain health-promoting benefits of coconut oil intake, including the improvement of the quality of life in breast cancer patients during chemotherapy. As it concerns the potential to hamper tumor growth, LA was shown to elicit inhibitory effects only in colon cancer cells. Here, we provide novel insights regarding the molecular mechanisms through which LA triggers antiproliferative and pro-apoptotic effects in both breast and endometrial cancer cells...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28904819/prdx6-retards-senescence-and-restores-trabecular-meshwork-cell-health-by-regulating-reactive-oxygen-species
#2
Bhavana Chhunchha, Prerna Singh, W Daniel Stamer, Dhirendra P Singh
A progressive decline in antioxidant potential and accumulation of reactive oxygen species (ROS) are major causes of pathogenesis of several diseases, including glaucoma. Trabecular meshwork (TM) dysfunction resulting in higher intraocular pressure (IOP) is a hallmark of glaucoma, but its causes are unclear. Using human (h) TM cells derived from glaucomatous and normal subjects of different ages and cells facing oxidative-stress, we showed that specific loss of moonlighting antioxidant protein Peroxiredoxin (Prdx) 6 in aging or in glaucomatous TM cells caused ROS accumulation and pathobiological changes in TM cells...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28904818/nf-%C3%AE%C2%BAb-pathway-link-with-er-stress-induced-autophagy-and-apoptosis-in-cervical-tumor-cells
#3
Xiaolan Zhu, Li Huang, Jie Gong, Chun Shi, Zhiming Wang, Bingkun Ye, Aiguo Xuan, Xiaosong He, Dahong Long, Xiao Zhu, Ningfang Ma, Shuilong Leng
Targeting endoplasmic reticulum (ER) stress is being investigated for its anticancer effect in various cancers, including cervical cancer. However, the molecular pathways whereby ER stress mediates cell death remain to be fully elucidated. In this study, we confirmed that ER stress triggered by compounds such as brefeldin A (BFA), tunicamycin (TM), and thapsigargin (TG) leads to the induction of the unfolded protein response (UPR) in cervical cancer cell lines, which is characterized by elevated levels of inositol-requiring kinase 1α, glucose-regulated protein-78, and C/EBP homologous protein, and swelling of the ER observed by transmission electron microscope (TEM)...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28904817/ihc-based-subcellular-quantification-provides-new-insights-into-prognostic-relevance-of-flip-and-procaspase-8-in-non-small-cell-lung-cancer
#4
Ryan A Hutchinson, Helen G Coleman, Kathy Gately, Vincent Young, Siobhan Nicholson, Robert Cummins, Elaine Kay, Sean O Hynes, Philip D Dunne, Seedevi Senevirathne, Peter W Hamilton, Darragh G McArt, Daniel B Longley
In this study, we developed an image analysis algorithm for quantification of two potential apoptotic biomarkers in non-small-cell lung cancer (NSCLC): FLIP and procaspase-8. Immunohistochemical expression of FLIP and procaspase-8 in 184 NSCLC tumors were assessed. Individual patient cores were segmented and classified as tumor and stroma using the Definiens Tissue Studio. Subsequently, chromogenic expression of each biomarker was measured separately in the nucleus and cytoplasm and reported as a quantitative histological score...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28900542/mitochondrial-dna-haplotypes-induce-differential-patterns-of-dna-methylation-that-result-in-differential-chromosomal-gene-expression-patterns
#5
William T Lee, Xin Sun, Te-Sha Tsai, Jacqueline L Johnson, Jodee A Gould, Daniel J Garama, Daniel J Gough, Matthew McKenzie, Ian A Trounce, Justin C St John
Mitochondrial DNA copy number is strictly regulated during development as naive cells differentiate into mature cells to ensure that specific cell types have sufficient copies of mitochondrial DNA to perform their specialised functions. Mitochondrial DNA haplotypes are defined as specific regions of mitochondrial DNA that cluster with other mitochondrial sequences to show the phylogenetic origins of maternal lineages. Mitochondrial DNA haplotypes are associated with a range of phenotypes and disease. To understand how mitochondrial DNA haplotypes induce these characteristics, we used four embryonic stem cell lines that have the same set of chromosomes but possess different mitochondrial DNA haplotypes...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28900541/simultaneous-silencing-of-acsl4-and-induction-of-gadd45b-in-hepatocellular-carcinoma-cells-amplifies-the-synergistic-therapeutic-effect-of-aspirin-and-sorafenib
#6
Hongping Xia, Kee Wah Lee, Jianxiang Chen, Shik Nie Kong, Karthik Sekar, Amudha Deivasigamani, Veerabrahma Pratap Seshachalam, Brian Kim Poh Goh, London Lucien Ooi, Kam M Hui
Sorafenib is currently the only US Food and Drug Administration (FDA)-approved molecular inhibitor for the systemic therapy of advanced hepatocellular carcinoma (HCC). Aspirin has been studied extensively as an anti-inflammation, cancer preventive and therapeutic agent. However, the potential synergistic therapeutic effects of sorafenib and aspirin on advanced HCC treatment have not been well studied. Drug combination studies and their synergy quantification were performed using the combination index method of Chou-Talalay...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28875039/nucleolar-and-coiled-body-phosphoprotein-1-nolc1-regulates-the-nucleolar-retention-of-trf2
#7
Fuwen Yuan, Guodong Li, Tanjun Tong
Telomeric repeat-binding factor 2 (TRF2) was reported to localize in the nucleolus of human cells in a cell cycle-dependent manner; however, the underlying mechanism remains unclear. Here, we found that nucleolar and coiled-body phosphoprotein 1 (NOLC1) interacted with TRF2 and mediated the shuttling of TRF2 between the nucleolus and nucleus in human 293T and HepG2 cells. Ablation of NOLC1 expression increased the number of nuclear TRF2 foci and decreased the nucleolar level of TRF2. Conversely, NOLC1 overexpression promoted the nucleolar accumulation of TRF2...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28845299/enriched-housing-promotes-post-stroke-functional-recovery-through-astrocytic-hmgb1-il-6-mediated-angiogenesis
#8
Jia-Yi Chen, Yuan Yu, Yin Yuan, Yu-Jing Zhang, Xue-Peng Fan, Shi-Ying Yuan, Jian-Cheng Zhang, Shang-Long Yao
Enriched environment (EE) is shown to promote angiogenesis, neurogenesis and functional recovery after ischemic stroke. However, the underlying mechanisms remain unclear. C57BL/6 mice underwent middle cerebral artery occlusion (60 min) followed by reperfusion, after which mice were housed in either standard environment (SE) or EE. Here we found that post-ischemic EE exhibited decreased depression and anxiety-like behavior, and promoted angiogenesis and functional recovery compared to SE mice. EE mice treated with high-mobility group box-1 (HMGB1) inhibitor glycyrrhizin had an increased post-stroke depression and anxiety-like behavior, and the angiogenesis and functional recovery were decreased...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28845298/amyloid-single-cell-cytotoxicity-assays-by-nanomotion-detection
#9
Francesco S Ruggeri, Anne-Laure Mahul-Mellier, Sandor Kasas, Hilal A Lashuel, Giovanni Longo, Giovanni Dietler
Cells are extremely complex systems able to actively modify their metabolism and behavior in response to environmental conditions and stimuli such as pathogenic agents or drugs. The comprehension of these responses is central to understand the molecular bases of human pathologies, including amyloid misfolding diseases. Conventional bulk biological assays are limited by intrinsic cellular heterogeneity in gene, protein and metabolite expression, and can investigate only indirectly cellular reactions in non-physiological conditions...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28845297/discovery-of-a-rock-inhibitor-fpnd-which-prevents-cerebral-hemorrhage-through-maintaining-vascular-integrity-by-interference-with-ve-cadherin
#10
Shang Li, Nana Ai, Mingyun Shen, Yuanye Dang, Cheong-Meng Chong, Peichen Pan, Yiu Wa Kwan, Shun Wan Chan, George Pak Heng Leung, Maggie Pui Man Hoi, Tingjun Hou, Simon Ming-Yuen Lee
Hemorrhagic stroke occurs when a weakened vessel ruptures and bleeds into the surrounding brain, leading to high rates of death and disability worldwide. A series of complex pathophysiological cascades contribute to the risk of hemorrhagic stroke, and no therapies have proven effective to prevent hemorrhagic stroke. Stabilization of vascular integrity has been considered as a potential therapeutic target for hemorrhagic stroke. ROCKs, which belong to the serine/threonine protein kinase family and participate in the organization of actin cytoskeleton, have become attractive targets for the treatment of strokes...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28845296/tumor-cell-senescence-response-produces-aggressive-variants
#11
Leixiang Yang, Jia Fang, Jiandong Chen
Tumors often respond favorably to initial chemotherapy but eventually relapse with drug resistance and increased metastatic potential. Cellular senescence is a major therapeutic outcome of cancer chemotherapy, which leads to tumor stasis or regression through immune clearance of senescent cells. However, senescent tumor cells have been shown to resume proliferation at low frequency. We found that subjecting arrested senescent tumor cells to cytotoxic treatments stimulates the clonogenic proliferation of remaining survivors...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28845295/apoptotic-resistance-of-human-skin-mast-cells-is-mediated-by-mcl-1
#12
Tarek Hazzan, Jürgen Eberle, Margitta Worm, Magda Babina
Mast cells (MCs) are major effector cells of allergic reactions and contribute to multiple other pathophysiological processes. MCs are long-lived in the tissue microenvironment, in which they matured, but it remains ill-defined how longevity is established by the natural habitat, as research on human MCs chiefly employs cells generated and expanded in culture. In this study, we report that naturally differentiated skin MCs exhibit substantial resilience to cell death with considerable portions surviving up to 3 days in the complete absence of growth factors (GF)...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28845294/erratum-microrna-122-ameliorates-corneal-allograft-rejection-through-the-downregulation-of-its-target-cpeb1
#13
Ting Wang, Fengjie Li, Wenwen Geng, Qingguo Ruan, Weiyun Shi
[This corrects the article DOI: 10.1038/cddiscovery.2017.21.].
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28845293/erratum-ips-derived-mscs-from-an-expandable-bank-to-deliver-a-prodrug-converting-enzyme-that-limits-growth-and-metastases-of-human-breast-cancers
#14
M Ullah, Y Kuroda, T J Bartosh, F Liu, Q Zhao, C Gregory, R Reger, J Xu, R H Lee, D J Prockop
[This corrects the article DOI: 10.1038/cddiscovery.2016.64.].
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28835855/chemotherapeutic-xct-inhibitors-sorafenib-and-erastin-unraveled-with-the-synaptic-optogenetic-function-analysis-tool
#15
Marc Dahlmanns, Eduard Yakubov, Daishi Chen, Tina Sehm, Manfred Rauh, Nicolai Savaskan, Jana Katharina Wrosch
In the search for new potential chemotherapeutics, the compounds' toxicity to healthy cells is an important factor. The brain with its functional units, the neurons, is especially endangered during the radio- and chemotherapeutic treatment of brain tumors. The effect of the potential compounds not only on neuronal survival but also neuronal function needs to be taken into account. Therefore, in this study we aimed to comprehend the biological effects of chemotherapeutic xCT inhibition on healthy neuronal cells with our synaptic optogenetic function analysis tool (SOFA)...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28815060/defective-expression-of-atg4d-abrogates-autophagy-and-promotes-growth-in-human-uterine-fibroids
#16
Abdeljabar El Andaloussi, Samar Habib, Gizem Soylemes, Archana Laknaur, Heba Elhusseini, Ayman Al-Hendy, Nahed Ismail
Uterine fibroids (UF) are the most common pelvic tumors in women of reproductive-age and they usually cause heavy menstrual bleeding, pain and infertility. Autophagy is a collection of processes that enables the cells to digest and recycle their cytoplasmic contents, such as toxic protein aggregates, defunct or disused organelles and invading microorganisms. Dysregulation in autophagy process were described in neoplasms; however, the contribution of autophagy to the pathogenesis of UF remains unknown. In this study, we demonstrate that autophagy is deregulated in human UF as evidenced by significant accumulation of autophagosome in human UF cells compared to normal myometrium cells...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28815059/erratum-long-noncoding-rna-noncoding-and-not-coded
#17
Debra Toiber, Gabriel Leprivier, Barak Rotblat
[This corrects the article DOI: 10.1038/cddiscovery.2016.104.].
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28811933/nuclear-matrix-metalloproteinases-functions-resemble-the-evolution-from-the-intracellular-to-the-extracellular-compartment
#18
REVIEW
Yingqiu Xie, Aidana Mustafa, Adina Yerzhan, Dalmira Merzhakupova, Perizat Yerlan, Askarbek N Orakov, Xiao Wang, Yi Huang, Lixia Miao
Matrix metalloproteinase (MMP) is defined as an endopeptidase in the extracellular matrix (ECM), which plays essential roles in physiological processes such as organogenesis, wound healing, angiogenesis, apoptosis and motility. MMPs are produced and assembled in the cytoplasm as proenzymes with a cytoplasmic domain and require extracellular activation. MMPs can degrade receptors, extracellular matrix proteins, PARPs and release apoptotic substances. MMPs have been found in the cytosol, organelles and extracellular compartments and recently many types of MMPs have been found in the nucleus...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28729912/protection-of-the-biconcave-profile-of-human-erythrocytes-against-osmotic-damage-by-ultraviolet-a-irradiation-through-membrane-cytoskeleton-enhancement
#19
Cunbo Li, Zheming Li, Shuang Xun, Pengchong Jiang, Rui Yan, Mincai Chen, Fen Hu, Romano A Rupp, Xinzheng Zhang, Leiting Pan, Jingjun Xu
To perform various physiological functions, erythrocytes possess a unique biconcave shape provided by a special architecture of the membrane-skeleton system. In the present work, we use a simple irradiation method to treat human erythrocytes with 365 nm ultraviolet-A (UVA) light at the single-cell level in vitro. Depending on the irradiation dose, UVA show protection of the biconcave profile against the detrimental action of distilled water. This protective effect can also be confirmed for saponin that damages the membrane-skeleton by vesiculation and pore formation...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28725491/ds16570511-is-a-small-molecule-inhibitor-of-the-mitochondrial-calcium-uniporter
#20
Naohiro Kon, Michiko Murakoshi, Aya Isobe, Katsuji Kagechika, Naoki Miyoshi, Takahiro Nagayama
In cardiac myocytes, regulation of mitochondrial Ca(2+) is important for cellular signaling and cardiac contraction. Ca(2+) entry into the mitochondria is mediated by a highly selective Ca(2+) channel called the mitochondrial calcium uniporter, which consists of a pore-forming subunit MCU and regulatory subunits such as MICU1. Although pharmacological regulation of the mitochondrial Ca(2+) influx is a promising approach to controlling the cellular functions, a cell-permeable and specific inhibitor of the mitochondrial calcium uniporter has not yet been developed...
2017: Cell Death Discovery
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