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https://www.readbyqxmd.com/read/27933242/transtuzumab-induced-organizing-pneumonia-a-case-report
#1
Ajay Gupta, Louise Teo, Philip Masel, David Godbolt, Geoffrey Beadle
BACKGROUND: Patients with metastatic breast cancer often have pulmonary symptoms with varying aetiologies. Transtuzumab is an extremely important drug used in the treatment of Her 2 neu over-expressing breast cancers. In this report we describe a case of organizing pneumonia associated with use of transtuzumab in metastatic breast cancer. Only three such cases have previously been reported. CASE DESCRIPTION: A 43 year old lady with Her 2 neu 3+, estrogen and progesterone receptor positive, metastatic breast cancer was started on weekly transtuzumab and albumen bound paclitaxel...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27932568/targeting-hif2-in-clear-cell-renal-cell-carcinoma
#2
Hyejin Cho, William G Kaelin
Inactivation of the von Hippel-Lindau tumor-suppressor protein (pVHL) is the signature "truncal" event in clear cell renal cell carcinoma, which is the most common form of kidney cancer. pVHL is part of a ubiquitin ligase the targets the α subunit of the hypoxia-inducible factor (HIF) transcription factor for destruction when oxygen is available. Preclinical studies strongly suggest that deregulation of HIF, and particularly HIF2, drives pVHL-defective renal carcinogenesis. Although HIF2α was classically considered undruggable, structural and chemical work by Rick Bruick and Kevin Gardner at University of Texas Southwestern laid the foundation for the development of small molecule direct HIF2α antagonists (PT2385 and the related tool compound PT2399) by Peloton Therapeutics that block the dimerization of HIF2α with its partner protein ARNT1...
December 8, 2016: Cold Spring Harbor Symposia on Quantitative Biology
https://www.readbyqxmd.com/read/27932314/tis21-btg2-inhibits-doxorubicin-induced-stress-fiber-vimentin-networks-via-nox4-ros-abi2-drf-linked-signal-cascade
#3
In Kyoung Lim, Jung-A Choi, Eun Young Kim, Bit Na Kim, Soohyun Jang, Min Sook Ryu, Sang-Hee Shim
Activities of TIS21(/BTG2) gene regulating cancer cell senescence were investigated in hepatoma cells by using low dose doxorubicin (Doxo, 100ng/mL). Treatment of Huh7 cells with Doxo increased linear actin nucleation e.g., transverse arcs and ventral stress fibers, as opposed to loss of filopodia. The linear actin nucleation was accompanied with thick vimentin networks at periphery of the cells, when examined by super-resolution STED microscope. However, expression of TIS21 inhibited ABI2-DRF pathway by inhibiting DRF expression and reducing ABI2 protein stability...
December 5, 2016: Cellular Signalling
https://www.readbyqxmd.com/read/27931283/mir-146a-inhibits-proliferation-and-enhances-chemosensitivity-in-epithelial-ovarian-cancer-via-reduction-of-sod2
#4
YaJie Cui, Kaie She, Defu Tian, Peilian Zhang, Xiaoyan Xin
Epithelial ovarian cancer (EOC) is the most lethal gynecological malignancy, accounting for 90% of all ovarian cancer. Dysregulation of miRNAs is associated with several types of EOC. In the current research, we aimed to study the role of abnormal expression of miR-146a in the development of EOC and to elucidate the possible molecular mechanisms. Compared with control samples, mRNA expression of miR-146a was significantly decreased in EOC tissues and cell lines. Overexpression of miR-146a prohibited cell proliferation, enhanced apoptosis, and increased sensitivity to chemotherapy drugs in EOC cells...
May 2016: Oncology Research
https://www.readbyqxmd.com/read/27931237/a-piperazidine-derivative-of-23-hydroxy-betulinic-acid-induces-a-mitochondria-derived-ros-burst-to-trigger-apoptotic-cell-death-in-hepatocellular-carcinoma-cells
#5
Nan Yao, Ying-Jie Li, Yu-He Lei, Nan Hu, Wei-Min Chen, Zhe Yao, Miao Yu, Jun-Shan Liu, Wen-Cai Ye, Dong-Mei Zhang
BACKGROUND: Elevated production of reactive oxygen species (ROS) and an altered redox state have frequently been observed in hepatocellular carcinoma (HCC); therefore, selective killing of HCC cells by chemotherapeutic agents that stimulate ROS generation or impair antioxidant systems may be a feasible approach in HCC chemotherapy. Recently, betulinic acid and its derivatives have attracted attention because they showed anti-cancer effects via a ROS- and mitochondria-related mechanism...
December 8, 2016: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/27931128/antioxidant-activities-of-ginsenoside-rg1-against-cisplatin-induced-hepatic-injury-through-nrf2-signaling-pathway-in-mice
#6
Yan Gao, Shifeng Chu, Qianhang Shao, Meijin Zhang, Congyuan Xia, Yingying Wang, Yueting Li, Yuxia Lou, Huiyong Huang, Naihong Chen
Oxidative stress is mainly caused by reactive oxygen species (ROS). The damage causes a net stress on normal organs, leading to a gradual loss of vital physiological function. ROS, such as free radicals, represent a class of molecules which are derived from the metabolism of oxygen and exist inherently. However, excessive produced ROS can damage all aerobic organisms. Ginseng is one of the most commonly used alternative herbal medicines, also as a traditional Chinese medicine. The aim of this study is to investigate the antioxidant potential function of ginsenoside Rg1 against cisplatin-caused hepatic damage...
December 8, 2016: Free Radical Research
https://www.readbyqxmd.com/read/27931027/anthracycline-induced-cardiotoxicity-in-young-cancer-patients-the-role-of-carnitine
#7
Saro H Armenian
While the increased rates of survival in childhood cancers have increased progressively in recent decades, many childhood cancer survivors will have at least one chronic health condition within 40 years of age. In this regard, cardiovascular complications have emerged as a leading cause of long-term morbidity and mortality in long-term survivors of childhood cancer, likely due to exposure to anthracycline chemotherapy, and outcomes in patients with anthracycline-related cardiomyopathy remain poor. Some progress has been made in understanding the mechanisms at the basis of anthracycline-related cardiomyopathy, which appear to involve generation of reactive oxygen species, leading to mitochondrial dysfunction, followed by myocyte apoptosis and maladaptive left ventricular remodeling...
December 9, 2016: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/27929535/dual-targeting-of-glutaminase-1-and-thymidylate-synthase-elicits-death-synergistically-in-nsclc
#8
Jae-Seon Lee, Joon H Kang, Seon-Hyeong Lee, Dongwan Hong, Jaekyoung Son, Kyeong M Hong, Jaewhan Song, Soo-Youl Kim
Glutaminase 1 (GLS1) expression is increased in non-small cell lung cancer (NSCLC). GLS1 knockdown using siRNA or inhibition using bis-2-(5-phenylacetamido-1,3,4-thiadiazol-2-yl)ethyl sulfide (BPTES) induced cell cycle arrest with significant reduction of ATP level while levels of reactive oxygen species or glutathione were not affected in NSCLC cell lines. Recently we found that NSCLC significantly depends on cytosol NADH for ATP production. GLS1 remarkably contributes to ATP production through transferring cytosolic NADH into mitochondria via malate-aspartate shuttle by supply of glutamate in NSCLC...
December 8, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27929475/anticancer-efficacy-of-photodynamic-therapy-with-lung-cancer-targeted-nanoparticles
#9
Ji-Eun Chang, Hyun-Jong Cho, Sanghoon Jheon
Photodynamic therapy (PDT) is a non-invasive and non-surgical method representing an attractive alternative choice for lung cancer treatment. Photosensitizers selectively accumulate in tumor tissue and lead to tumor cell death in the presence of oxygen and the proper wavelength of light. To increase the therapeutic effect of PDT, we developed both photosensitizer- and anticancer agent-loaded lung cancer-targeted nanoparticles. Both enhanced permeability and retention (EPR) effect-based passive targeting and hyaluronic-acid-CD44 interaction-based active targeting were applied...
December 1, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27929178/the-first-total-synthesis-of-the-marine-acetylenic-alcohol-lembehyne-b-a-selective-inducer-of-early-apoptosis-in-leukemia-cancer-cells
#10
Lilya U Dzhemileva, Vladimir A D'yakonov, Aleksey A Makarov, Evgeny N Andreev, Milyausha M Yunusbaeva, Usein M Dzhemilev
The communication reports a new stereoselective method for the synthesis of a natural acetylenic alcohol, lembehyne B. The key stage of the process uses new cross-cyclomagnesiation reaction of aliphatic and oxygenated 1,2-dienes with Grignard reagents in the presence of a catalytic amount of Cp2TiCl2. A study of the cytotoxic properties of lembehyne B on tumor cell lines using flow cytometry demonstrated that this is a selective inducer of early apoptosis of the Jurkat, HL-60 and K562 cell cultures and hypodiploid (sub-G1) sub-population inducer in cell cycle studies for all cell lines used...
December 8, 2016: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/27929173/novel-mitochondria-targeted-copper-ii-complexes-of-ferrocenyl-terpyridine-and-anticancer-active-8-hydroxyquinolines-showing-remarkable-cytotoxicity-dna-and-protein-binding-affinity
#11
Banashree Deka, Tukki Sarkar, Samya Banerjee, Arun Kumar, Sanjoy Mukherjee, Sasanka Deka, Kandarpa K Saikia, Akhtar Hussain
Metal complexes with organelle specificity and potent but selective cytotoxicity are highly desirable. In this work, we report the synthesis, characterization and cytotoxicity of six novel copper(ii) complexes of the formula [Cu(R-tpy)(N-O)]NO3 (1-6), where R-tpy is 4'-phenyl-2,2':6',2''-terpyridine (Ph-tpy; 1-3) or 4'-ferrocenyl-2,2':6',2''-terpyridine (Fc-tpy; 4-6), N-O is the anion of 8-hydroxyquinoline (HQ in 1, 4), 5-chloro-7-iodo-8-hydroxyquinoline (CQ in 2, 5) or 5-nitro-8-hydroxyquinoline (NQ in 3, 6)...
December 8, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27927199/sh003-induces-apoptosis-of-du145-prostate-cancer-cells-by-inhibiting-erk-involved-pathway
#12
Yu-Jeong Choi, Youn Kyung Choi, Kang Min Lee, Sung-Gook Cho, Soo-Yeon Kang, Seong-Gyu Ko
BACKGROUND: Herbal medicines have been used in cancer treatment, with many exhibiting favorable side effect and toxicity profiles compared with conventional chemotherapeutic agents. SH003 is a novel extract from Astragalus membranaceus, Angelica gigas, and Trichosanthes Kirilowii Maximowicz combined at a 1:1:1 ratio that impairs the growth of breast cancer cells. This study investigates anti-cancer effects of SH003 in prostate cancer cells. METHODS: SH003 extract in 30% ethanol was used to treat the prostate cancer cell lines DU145, LNCaP, and PC-3...
December 7, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27927016/inhibition-of-cathepsin-s-induces-mitochondrial-ros-that-sensitizes-trail-mediated-apoptosis-through-p53-mediated-down-regulation-of-bcl-2-and-c-flip
#13
Bo Ram Seo, Kyoung-Jin Min, Seon Min Woo, Misun Choe, Kyeong Sook Choi, Young-Kyung Lee, Gyesoon Yoon, Taeg Kyu Kwon
AIMS: Cathepsin S is highly expressed in various cancer cells, and it has pro-tumoral effects, including promotion of migration, invasion and neovascularization. In this study, we show that inhibition of cathepsin S could sensitize cancer cells to TRAIL-mediated apoptosis. RESULTS: An inhibitor of cathepsin S (Z-FL-COCHO; ZFL) markedly induced apoptosis in human renal cancer cells treated with TRAIL. In contrast, combined treatment with ZFL and TRAIL had no effect on normal cells...
December 7, 2016: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/27926513/mael-is-essential-for-cancer-cell-survival-and-tumorigenesis-through-protection-of-genetic-integrity
#14
Su-Hyeon Kim, Eun-Ran Park, Eugene Cho, Won-Hee Jung, Ju-Yeon Jeon, Hyun-Yoo Joo, Kee-Ho Lee, Hyun-Jin Shin
Germ line-specific genes are activated in somatic cells during tumorigenesis, and are accordingly referred to as cancer germline genes. Such genes that act on piRNA (Piwi-interacting RNA) processing play an important role in the progression of cancer cells. Here, we show that the spermatogenic transposon silencer maelstrom (Mael), a piRNA-processing factor, is required for malignant transformation and survival of cancer cells. A specific Mael isoform was distinctively overexpressed in diverse human cancer cell lines and its depletion resulted in cancer-specific cell death, characterized by apoptosis and senescence, accompanied by an increase in reactive oxygen-species and DNA damage...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27925481/mitochondrial-ros-uncoupled-from-atp-synthesis-determine-endothelial-activation-for-both-physiological-recruitment-of-patrolling-cells-and-pathological-recruitment-of-inflammatory-cells
#15
Xinyuan Li, Pu Fang, William Y Yang, Kylie Chan, Muriel Lavallee, Keman Xu, Tracy Gao, Hong Wang, Xiaofeng Yang
Mitochondrial reactive oxygen species (mtROS) are signaling molecules, which drive inflammatory cytokine production and T cell activation. In addition, cardiovascular diseases, cancers, and autoimmune diseases all share a common feature of increased mtROS level. Both mtROS and ATP are produced as a result of electron transport chain activity, but it remains enigmatic whether mtROS could be generated independently from ATP synthesis. A recent study shed light on this important question and found that, during endothelial cell (EC) activation, mtROS could be upregulated in a proton leak-coupled, but ATP synthesis-uncoupled manner...
November 5, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/27925393/intensive-care-unit-icu-readmission-after-major-lung-resection-prevalence-patterns-and-mortality
#16
Jae Jun Jung, Jong Ho Cho, Tae Hee Hong, Hong Kwan Kim, Yong Soo Choi, Jhingook Kim, Young Mog Shim, Jae Ill Zo
BACKGROUND: The aim of this study was to identify risk factors associated with mortality in patients re-admitted to an intensive care unit (ICU) after initial recovery from major lung resection. METHODS: We retrospectively reviewed the case records of all patients who underwent major lung resection between February 2011 and May 2013. A total of 1916 patients underwent major resection surgery for various lung diseases, 63 (3.3%) of which required ICU admission after initial recovery...
December 7, 2016: Thoracic Cancer
https://www.readbyqxmd.com/read/27923829/glucose-metabolism-reprogrammed-by-overexpression-of-ikk%C3%AE%C2%B5-promotes-pancreatic-tumor-growth
#17
Haseeb Zubair, Shafquat Azim, Sanjeev Kumar Srivastava, Aamir Ahmad, Arun Bhardwaj, Mohammad Aslam Khan, Girijesh Kumar Patel, Sumit Arora, James Elliot Carter, Seema Singh, Ajay Pratap Singh
Aberrant expression of the kinase IKKε in pancreatic ductal adenocarcinoma (PDAC) has been associated with poor prognosis. In this study, we define a pathobiologic function for IKKε in reprogramming glucose metabolism and driving progression in PDAC. Silencing IKKε in PDAC cells, which overexpressed it endogenously, was sufficient to reduce malignant cell growth, clonogenic potential, glucose consumption, lactate secretion, and expression of genes involved in glucose metabolism, without impacting the basal oxygen consumption rate...
October 20, 2016: Cancer Research
https://www.readbyqxmd.com/read/27922686/necrox-5-prevents-breast-cancer-metastasis-by-akt-inhibition-via-reducing-intracellular-calcium-levels
#18
Jin-Hee Park, Hyoung Kyu Kim, Hana Jung, Ki Hyang Kim, Mi Seon Kang, Jun Hyuk Hong, Byeng Chul Yu, Sungjae Park, Su-Kil Seo, Il Whan Choi, Soon Ha Kim, Nari Kim, Jin Han, Sae Gwang Park
A major goal of breast cancer research is to prevent the molecular events that lead to tumour metastasis. It is well-established that both cytoplasmic and mitochondrial reactive oxygen species (ROS) play important roles in cell migration and metastasis. Accordingly, this study examined the molecular mechanisms of the anti-metastatic effects of NecroX-5, a mitochondrial ROS scavenger. NecroX-5 inhibited lung cancer metastasis by ameliorating migration in a mouse model. In human cancer cells, the inhibition of migration by NecroX-5 is cell type-dependent...
December 5, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/27922685/5%C3%A2-bromo%C3%A2-3%C3%A2-3%C3%A2-hydroxyprop%C3%A2-1%C3%A2-ynyl-%C3%A2-2h%C3%A2-pyran%C3%A2-2%C3%A2-one-induces-apoptosis-in-t24-human-bladder-cancer-cells-through-mitochondria-dependent-signaling-pathways
#19
Guo-Qiang Yu, Zhong-Ling Dou, Zhao-Hui Jia
The present study was performed to investigate the effect of 5-bromo-3-(3-hydroxyprop-1-ynyl)-2H-pyran-2-one (BHP) on the induction of apoptosis and cell cycle arrest in T24 human bladder carcinoma cells. An MTT assay was used to investigate the inhibition of cell proliferation. Flow cytometry was used to observe alterations in the cell cycle, generation of reactive oxygen species (ROS), alterations in mitochondrial membrane potential (MMP) and induction of apoptosis in the T24 cells following BHP treatment...
December 6, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27922662/metabolic-reprogramming-and-ampk%C3%AE-1-pathway-activation-by-caulerpin-in-colorectal-cancer-cells
#20
Hua Yu, Huiqin Zhang, Mingjun Dong, Zhou Wu, Zhonglei Shen, Yangyang Xie, Zhenfang Kong, Xiaoyu Dai, Binbin Xu
Caulerpin, a secondary metabolite from the marine invasive green algae Caulerpa cylindracea is known to induce mitochondrial dysfunctions. In this study, the anticancer property of caulerpin was assessed in a panel of colorectal cancer cell lines. We demonstrated that caulerpin inhibited oxidative phosphorylation (OXPHOS) and facilitated an early intervention of the mitochondrial function, via inhibiting mitochondrial complex I, accompanied by the dissipation of mitochondrial membrane potential and a surge of reactive oxygen species (ROS) generation...
December 6, 2016: International Journal of Oncology
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