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https://www.readbyqxmd.com/read/28516914/adenylate-kinase-hcinap-determines-self-renewal-of-colorectal-cancer-stem-cells-by-facilitating-ldha-phosphorylation
#1
Yapeng Ji, Chuanzhen Yang, Zefang Tang, Yongfeng Yang, Yonglu Tian, Hongwei Yao, Xi Zhu, Zeming Zhang, Jiafu Ji, Xiaofeng Zheng
Targeting the specific metabolic phenotypes of colorectal cancer stem cells (CRCSCs) is an innovative therapeutic strategy for colorectal cancer (CRC) patients with poor prognosis and relapse. However, the context-dependent metabolic traits of CRCSCs remain poorly elucidated. Here we report that adenylate kinase hCINAP is overexpressed in CRC tissues. Depletion of hCINAP inhibits invasion, self-renewal, tumorigenesis and chemoresistance of CRCSCs with a loss of mesenchymal signature. Mechanistically, hCINAP binds to the C-terminal domain of LDHA, the key regulator of glycolysis, and depends on its adenylate kinase activity to promote LDHA phosphorylation at tyrosine 10, resulting in the hyperactive Warburg effect and the lower cellular ROS level and conferring metabolic advantage to CRCSC invasion...
May 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28487970/malat1-participates-in-ultraviolet-b-induced-photo-aging-via-regulation-of-the-erk-mapk-signaling-pathway
#2
Li Lei, Qinghai Zeng, Jianyun Lu, Shu Ding, Fang Xia, Jian Kang, Lina Tan, Lihua Gao, Liyang Kang, Ke Cao, Jianda Zhou, Rong Xiao, Jing Chen, Jinhua Huang
Long non-coding RNA (lncRNA), transcripts of >200 bp in length that do not appear to exhibit any coding capacity, are important in the occurrence and development of cancer, cardiovascular and neurological diseases. However, effects of lncRNAs on photo‑aging remain to be elucidated. To explore the potential effects of the lncRNA metastasis‑associated lung adenocarcinoma transcript 1 (MALAT1) on photo‑aging in fibroblasts, MALAT1 expression was silenced in fibroblasts using small interference RNA. Reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) was used to examine MALAT1 expression in normal and silenced fibroblasts following irradiation with 60 mJ/cm2 ultraviolet B (UVB) and an ELISA assay was used to identify matrix metalloproteinase‑1 (MMP‑1) content in the cellular supernatant...
June 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28478937/coexpression-of-growth-differentiation-factor-11-and-reactive-oxygen-species-in-metastatic-oral-cancer-and-its-role-in-inducing-the-epithelial-to-mesenchymal-transition
#3
Xiangming Qin, Hai Kuang, Lei Chen, Shanliang Wei, Dahai Yu, Feixin Liang
OBJECTIVES: The aim of this study was to investigate growth differentiation factor 11 (GDF11) and reactive oxygen species (ROS) expression in metastatic oral cancer and explored their roles in inducing epithelial to mesenchymal transition (EMT). STUDY DESIGN: The expression of GDF11, ROS, and EMT-related markers was evaluated in primary tumor tissues from patients with oral squamous cell carcinoma (OSCC). SCC-9 cells, a human tongue carcinoma cell line, were treated with recombinant GDF11...
June 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28474026/photo-induced-cytotoxicity-and-anti-metastatic-activity-of-ruthenium-ii-polypyridyl-complexes-functionalized-with-tyrosine-or-tryptophan
#4
Vadde Ramu, Sunil Aute, Nandaraj Taye, Rweetuparna Guha, Michael G Walker, Devaraj Mogare, Apoorva Parulekar, Jim A Thomas, Samit Chattopadhyay, Amitava Das
The synergistic effect of oxygen, light, and photosensitizer (PS) has found applications in medicine for the treatment of cancer through photodynamic therapy (PDT). Induction of apoptosis to cancerous cells will prevent tumor metastasis that spreads cancer cells to the neighboring organs/tissues. Herein, we report the two apoptotic Ru(ii)-polypyridyl complexes that are functionalized with pendant amino acid moieties tyrosine (1) and tryptophan (2), respectively. These two water soluble complexes were found to interact strongly (K = (1...
May 5, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28472754/ruthenium-ii-polypyridyl-complexes-synthesis-characterization-and-anticancer-activity-studies-on-bel-7402-cells
#5
Dan Wan, Shang-Hai Lai, Chuan-Chuan Zeng, Cheng Zhang, Bing Tang, Yun-Jun Liu
Two new ligand PTTP (2-phenoxy-1,4,8,9-tetraazatriphenylene) and FTTP (2-(3-fluoronaphthalen-2-yloxy)-1,4,8,9-tetraazatriphenylene) and their six ruthenium(II) polypyridyl complexes [Ru(N-N)2(PTTP)](ClO4)2 and [Ru(N-N)2(FTTP)](ClO4)2 (N-N=dmb: 4,4'-dimethyl-2,2'-bipiridine; dmp: 2,9-dimethyl-1,10-phenanthroline; ttbpy: 4,4'-ditertiarybutyl-2,2'-bipyridine) were synthesized and characterized. The cytotoxic activity of the complexes against cancer cells HeLa, BEL-7402, A549, HepG-2, HOS and normal cell LO2 was evaluated by MTT method...
April 27, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28468627/the-omega-3-polyunsaturated-fatty-acid-docosahexaenoic-acid-inhibits-proliferation-and-progression-of-non-small-cell-lung-cancer-cells-through-the-reactive-oxygen-species-mediated-inactivation-of-the-pi3k-akt-pathway
#6
Yuanqin Yin, Chengguang Sui, Fandong Meng, Ping Ma, Youhong Jiang
BACKGROUND: Docosahexaenoic acid(DHA) inhibits tumor growth and progression in various cancers, including lung cancer. However, the mechanisms involved remain unclear. The aim of this study was to identify the mechanism of DHA in inhibiting progression of non-small cell lung cancer (NSCLC) in vitro. METHODS: The proliferation of A549 was tested by MTT, and cell apoptosis was analysed using flow cytometer. The migration and invasion were examined respectively by wound healing assay and Transwell invasion assay...
May 3, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28455791/resveratrol-inhibits-hepatocellular-carcinoma-progression-driven-by-hepatic-stellate-cells-by-targeting-gli-1
#7
Yu Yan, Cancan Zhou, Jie Li, Ke Chen, Guanghui Wang, Guangbing Wei, Mingwei Chen, Xuqi Li
Hepatocellular carcinoma (HCC) is characterized by hypervascularity. Hepatic stellate cells (HSCs) play very important roles in HCC malignant progression, as these cells facilitate HCC tumorigenesis and metastasis. We demonstrated that HSCs induce angiogenesis in HCC by upregulating the expression of Gli-1, which stimulates reactive oxygen species (ROS) production and potentiates increases in HCC cell invasiveness. Resveratrol abolished HSC-induced angiogenesis and suppressed ROS production and IL-6 and CXCR4 receptor expression in HepG2 cells by down-regulating Gli-1 expression...
April 28, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28453992/salinomycin-overcomes-radioresistance-in-nasopharyngeal-carcinoma-cells-by-inhibiting-nrf2-level-and-promoting-ros-generation
#8
Gong Zhang, Wenjun Wang, Chunxiao Yao, Jinjin Ren, Shuping Zhang, Muyuan Han
Radiotherapy is the most important treatment for nasopharyngeal carcinoma (NPC). Radioresistant cancer cells have been shown to potentially result in residual disease that can lead to recurrence and metastasis. Salinomycin (SAL) has been identified as a promising anticancer drug during chemical screening, but it is unclear whether SAL plays a role in radioresistance. The nuclear factor erythroid-2-related factor 2 (Nrf2) is a crucial regulator of the cellular antioxidant system. There are currently numerous data indicating that Nrf2 has an important role in cancer radioresistance...
April 25, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28428969/targeted-lung-cancer-treatments-and-eye-metastasis
#9
REVIEW
Paul Zarogoulidis, Sofia Baka, Sofia Labaki, George Lazaridis, Georgia Trakada
Lung cancer remains the leading cause of death due to cancer. We do not have effective tools for the early detection of lung cancer, so patients are usually diagnosed at an advanced stage. However, novel therapies based on molecular pathways (such as those involving the epidermal growth factor receptor, anaplastic lymphoma kinase, serine/threonine-protein kinase B-Raf, proto-oncogene tyrosine-protein kinase ROS, c-Met proto-oncogene protein, and RET proto-oncogene protein) are now commonly used in the treatment of lung cancer...
2017: Medical Hypothesis, Discovery and Innovation in Ophthalmology
https://www.readbyqxmd.com/read/28426124/propofol-suppresses-lps-induced-nuclear-accumulation-of-hif-1%C3%AE-and-tumor-aggressiveness-in-non-small-cell-lung-cancer
#10
Nengli Yang, Yafeng Liang, Pei Yang, Fuhai Ji
Tumor hypoxia has been recognized as a characteristic of the tumor microenvironment and promotes metastasis in a variety of types of cancer. However, in lung cancer, the role of hypoxia-inducible factor 1α (HIF-1α) in modulating the cellular response to the inflammation-related microenvironment remains unclear. In the present study, enhanced expression of HIF-1α accompanied by an increased ROS level was observed in lipopolysaccharide (LPS)-stimulated non-small cell lung cancer (NSCLC) cells. In addition, propofol, a general anesthetic, was found to significantly reduce the LPS-induced upregulation of HIF-1α and ROS in a dose-dependent manner...
May 2017: Oncology Reports
https://www.readbyqxmd.com/read/28422720/overexpression-of-nox4-predicts-poor-prognosis-and-promotes-tumor-progression-in-human-colorectal-cancer
#11
Xiao-Lu Lin, Li Yang, Seng-Wang Fu, Wen-Feng Lin, Yun-Jie Gao, Hao-Yan Chen, Zhi-Zheng Ge
NADPH oxidase 4 (NOX4), a major source of reactive oxygen species (ROS) production, has been increasingly reported to be involved in tumorigenesis and/or tumor progression, but limited data are available regarding the role of NOX4 in colorectal carcinoma (CRC). We retrieved six independent investigations from Oncomine database and found that NOX4 is highly expressed in CRC tissues compared with corresponding normal controls. Similar results were also found in clinical specimens at both mRNA and protein levels...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28413461/long-noncoding-rna-malat1-inhibits-apoptosis-induced-by-oxygen-glucose-deprivation-and-reoxygenation-in-human-brain-microvascular-endothelial-cells
#12
Jia-Wei Xin, Yu-Gang Jiang
Cerebral ischemia/reperfusion (I/R) injury leads to brain vascular dysfunction, which is characterized by endothelial cell injury or death. Long noncoding (lnc) RNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is reportedly associated with endothelial cell functions and dysfunctions. In the present study, the role of MALAT1 in I/R-induced cerebral vascular endothelial cell apoptosis was explored using oxygen-glucose deprivation and reoxygenation (OGD-R) as an in vitro I/R injury model. Primary human brain microvascular endothelial cells were cultured under OGD-R, and the expression levels of MALAT1 and cell apoptosis were measured at 6, 9, 12, 24 and 36 h post-reoxygenation...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28411557/controversy-about-pharmacological-modulation-of-nrf2-for-cancer-therapy
#13
REVIEW
Lidija Milkovic, Neven Zarkovic, Luciano Saso
Conventional anticancer therapies such as radiotherapy and chemotherapies are associated with oxidative stress generating reactive oxygen species (ROS) and reactive aldehydes like 4-hydroxynonenal in cancer cells that govern them to die. The main mechanism activated due to exposure of the cell to these reactive species is the Nrf2-Keap1 pathway. Although Nrf2 was firstly perceived as a tumor suppressor that inhibits tumor initiation and cancer metastasis, more recent data reveal its role also as a pro-oncogenic factor...
April 8, 2017: Redox Biology
https://www.readbyqxmd.com/read/28405676/ulinastatin-protects-against-lipopolysaccharide-induced-cardiac-microvascular-endothelial-cell-dysfunction-via-downregulation-of-lncrna-malat1-and-ezh2-in-sepsis
#14
Zhaoxia Yu, Aisa Rayile, Xiangyang Zhang, Ying Li, Qiang Zhao
The present study aimed to evaluate the effects of ulinastatin on the permeability and apoptosis of lipopolysaccharide (LPS)-induced cardiac microvascular endothelial cells (CMVECs), and investigate its molecular mechanisms in sepsis. The sepsis rat model was induced by cecal ligation and puncture (CLP), and rat CMVECs were isolated and treated with LPS or/and ulinastatin. Then, cell permeability was evaluated by transendothelial electrical resistance, reactive oxygen species (ROS) levels were assessed by 2,7-dichlorofluorescein diacetate, cell apoptosis was detected using Annexin V-FITC apoptosis detection kit, and the expression levels of Bcl-2, Bax, caspase-3, metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) and EZH2 were detected by RT-qPCR and/or western blotting...
May 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28403777/potential-molecular-targets-of-ampelopsin-in-prevention-and-treatment-of-cancers
#15
Xianjuan Kou, Jingjing Fan, Ning Chen
Cancers have increasing threat to human health due to the limited treatment efficacy of chemotherapy and radiotherapy with a series of toxicity and side effects; therefore, the development and utilization of natural products with potential preventive and therapeutic efficacy, and less toxicity and side effects will be beneficial to promote the health of cancer patients. In this article, the activity of ampelopsin as a natural flavonoid and its underlying molecular mechanisms for the prevention and treatments of hepatic carcinoma, breast cancer, prostate cancer and melanoma through inhibiting cell proliferation, accelerating apoptosis, inducing reactive oxygen species (ROS) generation and endoplasmic reticulum (ER) stress, suppressing angiogenesis, invasion and metastasis, and synergizing the efficacy of other anti-cancer drugs have been summarized...
April 12, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28373445/pi3k-catalytic-isoform-alteration-promotes-the-limk1-related-metastasis-through-the-pak1-or-rock1-2-activation-in-cigarette-smoke-exposed-ovarian-cancer-cells
#16
Ga Bin Park, Daejin Kim
AIM: To investigate the molecular mechanisms by which long-term exposure to cigarette smoke extract (CSE) contributes to ovarian cancer metastasis. MATERIALS AND METHODS: Western blot analysis for diverse p110 isoforms of phosphoinositide 3-kinase (PI3K)-related signaling pathway and epithelial-mesenchymal transition (EMT) markers was performed to analyze the underlying mechanisms. Migratory activity of CSE-exposed ovarian cancer cells was determined by transendothelial migration and invasion assay...
April 2017: Anticancer Research
https://www.readbyqxmd.com/read/28368421/selected-mitochondrial-dna-landscapes-activate-the-sirt3-axis-of-the-upr-mt-to-promote-metastasis
#17
T C Kenny, P Hart, M Ragazzi, M Sersinghe, J Chipuk, M A K Sagar, K W Eliceiri, T LaFramboise, S Grandhi, J Santos, A K Riar, L Papa, M D'Aurello, G Manfredi, M G Bonini, D Germain
By causing mitochondrial DNA (mtDNA) mutations and oxidation of mitochondrial proteins, reactive oxygen species (ROS) leads to perturbations in mitochondrial proteostasis. Several studies have linked mtDNA mutations to metastasis of cancer cells but the nature of the mtDNA species involved remains unclear. Our data suggests that no common mtDNA mutation identifies metastatic cells; rather the metastatic potential of several ROS-generating mutations is largely determined by their mtDNA genomic landscapes, which can act either as an enhancer or repressor of metastasis...
April 3, 2017: Oncogene
https://www.readbyqxmd.com/read/28362858/3-bromopyruvate-and-buthionine-sulfoximine-effectively-kill-anoikis-resistant-hepatocellular-carcinoma-cells
#18
Minjong Lee, Ara Jo, Seulki Lee, Jong Bin Kim, Young Chang, Joon Yeul Nam, Hyeki Cho, Young Youn Cho, Eun Ju Cho, Jeong-Hoon Lee, Su Jong Yu, Jung-Hwan Yoon, Yoon Jun Kim
BACKGROUND & AIMS: Acquisition of anoikis resistance is a prerequisite for metastasis in hepatocellular carcinoma (HCC). However, little is known about how energy metabolism and antioxidant systems are altered in anoikis-resistant (AR) HCC cells. We evaluated anti-tumor effects of a combination treatment of 3-bromopyruvate (3-BP) and buthionine sulfoximine (BSO) in AR HCC cells. METHODS: We compared glycolysis, reactive oxygen species (ROS) production, and chemoresistance among Huh-BAT, HepG2 HCC cells, and the corresponding AR cells...
2017: PloS One
https://www.readbyqxmd.com/read/28350451/ros-switchable-polymeric-nanoplatform-with-stimuli-responsive-release-for-active-targeted-drug-delivery-to-breast-cancer
#19
Yu Zhang, Qin Guo, Sai An, Yifei Lu, Jianfeng Li, Xi He, Lisha Liu, Yujie Zhang, Tao Sun, Chen Jiang
Tumor microenvironment plays a vital role in the process of tumor development, proliferation, invasion, and metastasis. It is well acknowledged that reduction in pH, reactive oxygen species (ROS), and increased level of glucose transporter 1 (GLUT1) have become featured intracellular and extracellular biochemical markers of cancer owing to oncogenic transformation and abnormal metabolism. To establish a distinctive drug delivery system directed against the tumor microenvironment features, we develop a newly engineered polymeric nanoplatform for efficient doxorubicin (DOX) delivery with reduced systemic toxicity and high antitumor efficiency...
March 28, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28350337/3-4-dihydroxybenzalactone-suppresses-human-non-small-cell-lung-carcinoma-cells-metastasis-via-suppression-of-epithelial-to-mesenchymal-transition-ros-mediated-pi3k-akt-mapk-mmp-and-nf%C3%AE%C2%BAb-signaling-pathways
#20
Wei Chao, Jeng-Shyan Deng, Pei-Ying Li, Yu-Chia Liang, Guan-Jhong Huang
3,4-Dihydroxybenzalactone (DBL) was isolated from Phellinus linteus (PL), which is a folk medicine possessing various physiological effects. In this study, we used highly metastatic A549 cells to investigate efficacy of DBL inhibition of cancer metastasis and possible mechanisms. The results revealed DBL inhibited migratory and invasive abilities of cancer cells at noncytotoxic concentrations. We found DBL suppressed enzymatic activities, protein expression, and RNA levels of matrix metalloproteinase (MMP)-2 and MMP-9...
March 28, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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