Read by QxMD icon Read

HIF-1α AND tumor

Amirhossein Jahangiri, Maryam Dadmanesh, Khodayar Ghorban
Signal transducer and activator of transcription 3 (STAT3) interacts with many gene promoters and transcription factors such as hypoxia-induced factor 1α (HIF-1α). Recent evidences proposed that STAT3 and HIF-1α together are responsible for angiogenesis and immune response suppression. The main aim of this study was to inhibit STAT3 and HIF-1α and assess their effects on the expression of immunosuppressive cytokines. S31-201 and PX-478 were used to inhibit STAT3 and HIF-1α, respectively. In both hypoxic and normoxic conditions, intracellular levels of HIF-1α were evaluated by western blotting and flow cytometry...
October 12, 2018: In Vitro Cellular & Developmental Biology. Animal
Balraj Singh Gill, Richa Mehra, Navgeet, Sanjeev Kumar
Natural products are rich in several potent bioactive compounds, targeting complex network of proteins involved in various diseases. Vitex negundo (VN), commonly known as "chaste tree", is an ethnobotanically important plant with enormous medicinal properties. Different species of Vitex vary in chemical composition, thus producing different phytochemicals. Several bioactive compounds have been extracted from leaves, seeds, roots in form of volatile oils, flavonoids, lignans, iridoids, terpenes, and steroids...
October 11, 2018: Molecular Biology Reports
Alejandra Suares, Cinthya Tapia, Verónica González-Pardo
The Kaposi's sarcoma-associated herpesvirus G protein-coupled receptor (KSHV/vGPCR) is a key molecule in the pathogenesis of Kaposi's sarcoma. In endothelial cells, tumor maintenance and NF-κB activation depends on vGPCR constitutive expression and activity. We have previously demonstrated that 1α,25(OH)2 D3 induces apoptosis in a VDR dependent manner, inhibits vGPCR cell growth and NF-κB activity. In this study, we developed a method to obtain multicellular spheroids (MCS) from endothelial cells expressing vGPCR in order to test whether MCS have a similar response to 2D-cultures after 1α,25(OH)2 D3 treatment...
October 8, 2018: Journal of Steroid Biochemistry and Molecular Biology
Rong-Sheng Qin, Zhen-Hua Zhang, Neng-Ping Zhu, Fei Chen, Qian Guo, Hao-Wen Hu, Shao-Zhi Fu, Shan-Shan Liu, Yue Chen, Juan Fan, Yun-Wei Han
BACKGROUND: Conventional chemotherapy is commonly used to treat non-small cell lung cancer (NSCLC) however it increases therapeutic resistance. In contrast, metronomic chemotherapy (MET) is based on frequent drug administration at lower doses, resulting in inhibition of neovascularization and induction of tumor dormancy. This study aims to evaluate the inhibitory effects, adverse events, and potential mechanisms of MET Vinorelbine (NVB) combined with an angiogenesis inhibitor (Endostar)...
October 11, 2018: BMC Cancer
Lei Wang, Mengya Niu, Cuixia Zheng, Hongjuan Zhao, Xiuxiu Niu, Li Li, Yujie Hu, Yingjie Zhang, Jinjin Shi, Zhenzhong Zhang
Sonodynamic therapy (SDT) always causes tumor hypoxia aggravation which can induce malignant cell proliferation and drug resistance. To overcome these disadvantages, a cascaded drug delivery system (Lipo/HMME/ACF@MnO2 -AS1411) is constructed for synergistic enhanced sonodynamic therapy. First, hematoporphyrin monomethyl ether (HMME) and acriflavine (ACF) are encapsulated in the lipid layers and the inner aqueous cores of the liposomes, respectively. Then the ultrathin manganese dioxide (MnO2 ) nanosheets are coated on the surface of the liposomes by using KMnO4 and polyethylene glycol through "one step reduction and modification" method...
October 10, 2018: Advanced Healthcare Materials
Hans Jonas Meyer, Leonard Leifels, Gordian Hamerla, Anne Kathrin Höhn, Alexey Surov
PURPOSE: To analyze associations between histogram analysis parameters derived from conventional magnetic resonance imaging (MRI) and different histopathological features in head and neck squamous cell carcinoma (HNSCC). PROCEDURES: Thirty-four patients with histologically proven primary HNSCC were prospectively acquired. Histogram analysis was derived from pre-contrast T1-weighted (T1w) and T2-weighted (T2w) images. In all cases, expression of HIF-1α, VEGF, EGFR, p53, Ki67, and p16 as well as tumor cell count was analyzed...
October 3, 2018: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
Xinqun Li, Yeonju Lee, Ya'an Kang, Bingbing Dai, Mayrim Rios Perez, Michael Pratt, Eugene J Koay, Michael Kim, Rolf A Brekken, Jason B Fleming
Lumican is secreted by pancreatic stellate cells and inhibits cancer progression. Extracellular lumican inhibits cancer cell replication and restrains growth of early-stage pancreatic adenocarcinoma (PDAC) such that patients with tumors containing stromal lumican experience a three-fold longer survival after treatment. In the present study, patient tumor tissues, ex-vivo cultures of patient-derived xenografts (PDX), PDAC stellate and tumor cells were used to investigate whether hypoxia (1% O2 ) within the tumor microenvironment influences stromal lumican expression and secretion...
October 3, 2018: Cell Death and Differentiation
H-X Zhang, J-J Yang, S-A Zhang, S-M Zhang, J-X Wang, Z-Y Xu, R-Y Lin
OBJECTIVE: Chronic obstructive pulmonary disease (COPD) is an incomplete, reversible disease with progressive inflammation obstruction in airways. This study aims to explore the regulatory mechanism of hypoxia-inducible factor-1α (HIF-1α) in inflammatory response and progression of COPD. PATIENTS AND METHODS: 71 bronchoalveolar lavage fluid (BALF) samples were collected, including 59 samples from COPD patients (COPD group) and 12 from patients with normal pulmonary function (control group)...
September 2018: European Review for Medical and Pharmacological Sciences
Dan Wang, Xiaojing Zhang, Yapeng Lu, Xueting Wang, Li Zhu
BACKGROUND: Hypoxia inducible factor 1α (HIF-1α) is a protein related with carcinogenesis and metastasis in many tumors. However, little is known about the prognostic value of HIF-1α in hepatocellular carcinoma (HCC) patients with cirrhosis. METHODS: Clinical-pathological information and follow-up data were collected from HCC (n = 419) and chronic hepatitis (n = 49) patients. HIF-1α expression was scored based on the percentage of immunohistochemical staining...
September 13, 2018: Pathology, Research and Practice
Paraskevi Xekouki, Ana Brennand, Ben Whitelaw, Karel Pacak, Constantine A Stratakis
Pituitary adenomas (PA) and pheochromocytomas/paragangliomas (PHEO/PGL) are rare tumors. Although they may co-exist by coincidence, there is mounting evidence that genes predisposing in PHEO/PGL development, may play a role in pituitary tumorigenesis. In 2012, we described a GH-secreting PA caused by an SDHD mutation in a patient with familial PGLs and found loss of heterozygosity at the SDHD locus in the pituitary tumor, along with increased hypoxia-inducible factor 1α (HIF-1α) levels. Additional patients with PAs and SDHx defects have since been reported...
October 1, 2018: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
Jianwen Ye, Kunlun Chen, Lei Qi, Renfeng Li, Hongwei Tang, Chuang Zhou, Wenlong Zhai
Hypoxia plays a crucial role in cancer development and progression. Overexpression of hypoxia-inducible factor-1α (HIF‑1α) has been demonstrated in a hypoxic microenvironment in various tumor types. Metformin has been identified as an antitumor drug in various tumor types. However, its role in cellular migration in a hypoxic microenvironment, and the associated regulatory mechanism, have yet to be fully elucidated. The present study aimed to investigate the clinical significance of HIF‑1α, and its biological role, in gallbladder cancer (GBC)...
September 28, 2018: Oncology Reports
Haibin Wu, Xuetao Li, Ming Feng, Lin Yao, Zhitong Deng, Guozheng Zao, Youxin Zhou, Sansong Chen, Ziwei Du
Glioma is the most common adult malignant primary brain tumor; however, the effect of chemotherapy is often limited by drug‑resistance and poor prognosis is common. Ring finger protein 138 (RNF138) belongs to the E3 ligase family, and has significantly higher expression level in glioma tissue than in noncancerous brain tissues. Epithelial-mesenchymal-transition (EMT) has a critical role in cancer invasion and metastasis, ultimately leading to increased cell motility and resistance to genotoxic agents. Extracellular‑signal regulated kinase (Erk) pathways promote the growth of glioma cells and enhance tumor invasion, with a role in the progression of EMT...
September 28, 2018: Oncology Reports
Zhi Zhao, Guanggai Xia, Ni Li, Ruping Su, Xiao Chen, Li Zhong
Aim: Anti-VEGF therapy plays an important role in the treatment of malignant tumors, especially metastatic malignant tumors. However, resistance and an inefficient response to anti-VEGF therapy exist. The current study aimed to investigate whether autophagy plays a part in the anti-tumor effect of bevacizumab in colorectal cancer cells. Methods: VEGF-A expression was measured by immunohistochemical methods. Cell viability and cell apoptosis were detected using 3-(4,5-dimethylthiazol-2-yl)-3,5-diphenylformazan (MTT) and flow cytometry...
2018: Journal of Cancer
Baojia Zou, Xialei Liu, Baimeng Zhang, Yihang Gong, Chaonong Cai, Peiping Li, Jiafan Chen, Shan Xing, Jianxu Chen, Siqi Peng, Bibesh Pokhrel, Lei Ding, Linjuan Zeng, Jian Li
Fibroblast activation protein (FAP) is a serine protease that has been reported in fibroblasts and some carcinoma cells, which correlates with poor patient outcomes. FAP can be induced under hypoxia which is also vital in the malignant behaviors of cancer cells. However, the role of FAP and its correlation with hypoxia has not been investigated in HCC cancer cells. In tissues from post-surgical HCC patients in our center, we adopted immunohistochemistry staining (IHC), western blot and quantitative RT-PCR to detect the expression levels of FAP and the hypoxia related marker, hypoxia inducible factor 1α (HIF-1α)...
2018: Journal of Cancer
Xiao Liu, Yinping Sun, Wei Tian, Fuli Wang, Xiao Lv, Min Wang, Tiantian Sun, Jingjing Zhang, Lin Wang, Mingyong Han
Semaphorin4A (Sema4A) is a family member of semaphorins expressed in immune cells and is also related with disease progression of tumor disease. In this study, we investigate the expression and pathological role of Sema4A in breast cancer (BCa). Our data showed that the expression of Sema4A increased in the tissues and serum of BCa patients when compared with normal controls. The expression of Sema4A in BCa cells could be induced by hypoxic treatment, whereas silencing HIF-1α could attenuate the above induced...
September 28, 2018: Biological & Pharmaceutical Bulletin
Jing Ying Wang, Zhe Wang, Ming Yue Li, Zhihong Zhang, Chunliu Mi, Hong Xiang Zuo, Yue Xing, Yan-Ling Wu, Li-Hua Lian, Guang Hua Xu, Lian Xun Piao, Juan Ma, Xuejun Jin
Dictamnine (DTM) is a natural alkaloid isolated from the root of Dictamnus dasycarpus Turcz and has been shown to exhibit multiple biological functions, including anti-inflammatory, antifungal, anti-angiogenic and anticancer activity. However, the mechanisms by which dictamnine inhibits tumor growth are not fully understood. In this study, we investigated the effectiveness of dictamnine as a treatment for cancer and to identify the underlying mechanisms of its anticancer activity. Here, dictamnine showed the potent inhibitory activity against HIF-1α and Slug activation induced by hypoxia in various human cancer cell lines...
September 25, 2018: Chemico-biological Interactions
Thekkuttuparambil A Ajith
Hypoxia-inducible factors (HIFs) are transcription factors that are expressed in the hypoxic tumor microenvironment. They are involved in the cellular adaptations by improving the metabolism of glucose and enhance the expression of vascular endothelial growth factor, platelet-derived growth factor and angiopoietin, thereby they play a pivotal role in the angiogenesis. Hypoxia can increase the expression of nuclear factor-kappa B which promotes the pro-inflammatory status. Abnormally high angiogenesis, inflammation, antiapoptosis and anaerobic glycolysis can augment the progression and metastasis of tumor...
September 27, 2018: Journal of Basic and Clinical Physiology and Pharmacology
Maoyun Fei, Jianming Guan, Tao Xue, Lianjin Qin, Chengwu Tang, Ge Cui, Yao Wang, Hui Gong, Wenming Feng
Background: Hepatocellular carcinoma (HCC) is the fifth most common cancer and the third most common cause of cancer-related death worldwide. The 5-year survival rate remains low despite considerable research into treatments of HCC, including surgery, radiotherapy and chemotherapy. Many mechanisms within HCC still require investigation, including the influence of hypoxia, which has a crucial role in many cancers and is associated with metastasis. Hypoxia inducible factor-1α (HIF-1α) is known to regulate the expression of many chemokines, including interleukin-8 (IL-8), which is associated with tumor metastasis...
2018: Cellular & Molecular Biology Letters
Yan-Yan Wu, Tong-Ming Li, Lin-Quan Zang, Bing Liu, Gui-Xiang Wang
The prognosis of colorectal cancer (CRC) is seriously affected by high intestinal mucosal permeability accompanied by increasing tumor load. Berberine, a natural plant-derived product, can protect the intestinal mucosal barrier and suppress tumor growth, but its effects on the intestinal mucosal barrier dysfunction of CRC have not yet been evaluated. Herein, we assessed the effects of berberine on the intestinal mucosal permeability of HCT116 tumor-bearing mice and the underlying mechanism. Berberine (6.25, 12...
November 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Wen-Jing Zhong, Hui-Hui Yang, Xin-Xin Guan, Jian-Bing Xiong, Chen-Chen Sun, Chen-Yu Zhang, Xiao-Qin Luo, Yan-Feng Zhang, Jun Zhang, Jia-Xi Duan, Yong Zhou, Cha-Xiang Guan
Gluconic metabolic reprogramming, immune response, and inflammation are intimately linked. Glycolysis involves in the pathologic progress in acute and chronic inflammatory diseases. However, the involvement of glycolysis in the acute lung injury (ALI) is still unclear. This study investigated the role of glycolysis in an animal model of ALI. First, we found that lactate content in serum was remarkably increased in ALI patients and a murine model induced by intratracheal administration of lipopolysaccharide (LPS)...
September 7, 2018: Journal of Cellular Physiology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"