keyword
MENU ▼
Read by QxMD icon Read
search

hif-1

keyword
https://www.readbyqxmd.com/read/28107636/visceral-white-adipose-tissue-following-chronic-intermittent-and-sustained-hypoxia-in-mice
#1
David Gozal, Alex Gileles-Hillel, Rene Cortese, Yan Li, Isaac Almendros, Zhuanhong Qiao, Ahamed A Khalyfa, Jorge Andrade, Abdelnaby Khalyfa
BACKGROUND: Angiogenesis, a process induced by hypoxia in visceral white adipose tissue (vWAT) in the context of obesity, mediates obesity-induced metabolic dysfunction and insulin resistance. Chronic intermittent hypoxia (IH) and sustained hypoxia (SH) induce body weight reductions and insulin resistance of differing magnitude, suggesting different HIF-1α-related activity. METHODS: 8-week old male C57BL/6J mice (n=10-12/group) were exposed to either IH, SH,or room air (RA)...
January 20, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28106780/integrins-and-cell-metabolism-an-intimate-relationship-impacting-cancer
#2
REVIEW
Rehman Ata, Costin N Antonescu
Integrins are important regulators of cell survival, proliferation, adhesion and migration. Once activated, integrins establish a regulated link between the extracellular matrix and the cytoskeleton. Integrins have well-established functions in cancer, such as in controlling cell survival by engagement of many specific intracellular signaling pathways and in facilitating metastasis. Integrins and associated proteins are regulated by control of transcription, membrane traffic, and degradation, as well as by a number of post-translational modifications including glycosylation, allowing integrin function to be modulated to conform to various cellular needs and environmental conditions...
January 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28099905/prolyl-hydroxylase-domain-protein-3-and-asparaginyl-hydroxylase-factor-inhibiting-hif-1-levels-are-predictive-of-tumoral-behavior-and-prognosis-in-hepatocellular-carcinoma
#3
Mingyang Ma, Shuyao Hua, Gang Li, Sumei Wang, Xue Cheng, Songqing He, Ping Wu, Xiaoping Chen
Hypoxia-inducible factors (HIFs) are key regulators in oxygen homeostasis. Their stabilization and activity are regulated by prolyl hydroxylase domain (PHD)-1, -2, -3 and factor inhibiting HIF (FIH). This study investigated the relation between these oxygen sensors and the clinical behaviors and prognosis of hepatocellular carcinoma (HCC). Tissue microarray and RT-PCR analysis of tumor tissues and adjacent non-tumor liver tissues revealed that mRNA and protein levels of both PHD3 and FIH were lower within tumors...
January 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28097495/the-expression-of-hypoxia-inducible-factor-1%C3%AE-gene-is-not-affected-by-low-oxygen-conditions-in-yellow-perch-perca-flavescens-juveniles
#4
Karolina Kwasek, Simona Rimoldi, Anna Giulia Cattaneo, Timothy Parker, Konrad Dabrowski, Genciana Terova
Hypoxia can affect various fish populations, including yellow perch Perca flavescens, which is an economically and ecologically important species in Lake Erie, a freshwater system that often experiences hypoxia in the hypolimnetic part of the lake. Fish, similarly to mammals, possess molecular oxygen sensor-hypoxia-inducible factor-1 (HIF-1), a transcription factor that can affect expression of many downstream genes related to animal growth and locomotion, protein synthesis, as well as ATP and amino acid metabolism...
January 18, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28092362/the-role-of-endothelial-hif-1-%C3%AE-in-the-response-to-sublethal-hypoxia-in-c57bl-6-mouse-pups
#5
Qi Li, Michael Michaud, Chan Park, Yan Huang, Rachael Couture, Frank Girodano, Michael L Schwartz, Joseph A Madri
Chronic sublethal hypoxia, a complication of premature birth, is associated with cognitive and motor handicaps. Responsiveness to and recovery from this hypoxic environment is dependent on induction of HIF-1 α in the cells affected. Microvascular endothelial-glial and microvascular endothelial-neuronal precursor interactions have been found to be dynamic and reciprocal, involving autocrine and paracrine signaling, with response and recovery correlated with baseline levels and levels of induction of HIF-1 α...
January 16, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28089517/hypoxia-induces-a-hif-1-dependent-transition-from-collective-to-amoeboid-dissemination-in-epithelial-cancer-cells
#6
Steffi Lehmann, Veronika Te Boekhorst, Julia Odenthal, Roberta Bianchi, Sjoerd van Helvert, Kristian Ikenberg, Olga Ilina, Szymon Stoma, Jael Xandry, Liying Jiang, Reidar Grenman, Markus Rudin, Peter Friedl
Cancer metastases arise from a multi-step process that requires metastasizing tumor cells to adapt to signaling input from varying tissue environments [1]. As an early metastatic event, cancer cell dissemination occurs through different migration programs, including multicellular, collective, and single-cell mesenchymal or amoeboid migration [2-4]. Migration modes can interconvert based on changes in cell adhesion, cytoskeletal mechanotransduction [5], and/or proteolysis [6], most likely under the control of transcriptional programs such as the epithelial-to-mesenchymal transition (EMT) [7, 8]...
January 11, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28074863/herb-pair-danggui-honghua-mechanisms-underlying-blood-stasis-syndrome-by-system-pharmacology-approach
#7
Shi-Jun Yue, Lan-Ting Xin, Ya-Chu Fan, Shu-Jiao Li, Yu-Ping Tang, Jin-Ao Duan, Hua-Shi Guan, Chang-Yun Wang
Herb pair Danggui-Honghua has been frequently used for treatment of blood stasis syndrome (BSS) in China, one of the most common clinical pathological syndromes in traditional Chinese medicine (TCM). However, its therapeutic mechanism has not been clearly elucidated. In the present study, a feasible system pharmacology model based on chemical, pharmacokinetic and pharmacological data was developed via network construction approach to clarify the mechanisms of this herb pair. Thirty-one active ingredients of Danggui-Honghua possessing favorable pharmacokinetic profiles and biological activities were selected, interacting with 42 BSS-related targets to provide potential synergistic therapeutic actions...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070036/-hypoxic-condition-promotes-olfactory-mucosa-mesenchymal-stem-cells-to-differentiate-into-neurons-and-%C3%A2-underlying-mechanisms
#8
Yi Zhuo, Ting Yuan, Da Duan, Lei Wang, Lite Ge, Pei Wu, Hao Wang, Ming Lu
To explore whether hypoxic condition could promote the olfactory mucosa mesenchymal stem cells (OM-MSCs) to differentiate into neurons with the olfactory ensheathing cells (OECs) supernatant and the potential mechanisms.
 Methods: The OM-MSCs and OECs were isolated and cultured, and they were identified by flow cytometry and immunofluorescence. The OM-MSCs were divided into three groups: a 3%O2+ HIF-1α inhibitors (lificiguat: YC-1) + OECs supernatant group (Group A) , a 3%O2 + OECs supernatant group (Group B) and a 21%O2 + OECs supernatant group (Control group)...
December 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28060746/mitochondrial-deficiency-impairs-hypoxic-induction-of-hif-1-transcriptional-activity-and-retards-tumor-growth
#9
Masaru Koido, Naomi Haga, Aki Furuno, Satomi Tsukahara, Junko Sakurai, Yuri Tani, Shigeo Sato, Akihiro Tomida
Mitochondria can be involved in regulating cellular stress response to hypoxia and tumor growth, but little is known about that mechanistic relationship. Here, we show that mitochondrial deficiency severely retards tumor xenograft growth with impairing hypoxic induction of HIF-1 transcriptional activity. Using mtDNA-deficient ρ0 cells, we found that HIF-1 pathway activation was comparable in slow-growing ρ0 xenografts and rapid-growing parental xenografts. Interestingly, we found that ex vivo ρ0 cells derived from ρ0 xenografts exhibited slightly increased HIF-1α expression and modest HIF-1 pathway activation regardless of oxygen concentration...
January 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28054425/synergism-between-soluble-guanylate-cyclase-signaling-and-neuropeptides-extends-lifespan-in-the-nematode-caenorhabditis-elegans
#10
Rachel Abergel, Leonid Livshits, Maayan Shaked, Arijit Kumar Chatterjee, Einav Gross
Oxygen (O2 ) homeostasis is important for all aerobic animals. However, the manner by which O2 sensing and homeostasis contribute to lifespan regulation is poorly understood. Here, we use the nematode Caenorhabditis elegans to address this question. We demonstrate that a loss-of-function mutation in the neuropeptide receptor gene npr-1 and a deletion mutation in the atypical soluble guanylate cyclase gcy-35 O2 sensor interact synergistically to extend worm lifespan. The function of npr-1 and gcy-35 in the O2 -sensing neurons AQR, PQR, and URX shortens the lifespan of the worm...
January 4, 2017: Aging Cell
https://www.readbyqxmd.com/read/28049953/cobalt-chloride-induces-expression-and-function-of-breast-cancer-resistance-protein-bcrp-abcg2-in-human-renal-proximal-tubular-epithelial-cell-line-hk-2
#11
Katsuki Nishihashi, Kei Kawashima, Takami Nomura, Yumiko Urakami-Takebayashi, Makoto Miyazaki, Mikihisa Takano, Junya Nagai
The human breast cancer resistance protein (BCRP/ABCG2), a member of the ATP-binding cassette transporter family, is a drug transporter restricting absorption and enhancing excretion of many compounds including anticancer drugs. The cis-regulatory elements in the BCRP promoter include a hypoxia response element, i.e., the DNA binding site for hypoxia-inducible factor-1 (HIF-1). In this study, we investigated the effect of cobalt chloride, a chemical inducer of HIF-1α, on the expression and function of BCRP in human renal proximal tubular cell line HK-2...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28047565/su-g-tep3-10-radiation-induces-prompt-live-cell-metabolic-fluxes
#12
D Campos, W Peeters, K Nickel, B Burkel, J Bussink, R Kimple, A van der Kogel, K Eliceiri, M Kissick
PURPOSE: To compare metabolic dynamics and HIF-1α expression following radiation between a cancerous cell line (UM-SCC-22B) and a normal, immortalized cell line, NOK (Normal Oral Keratinocyte). HIF-1 is a key factor in metabolism and radiosensitivity. A better understanding of how radiation affects the interplay of metabolism and HIF-1 might give a better understanding of the mechanisms responsible for radiosensitivity. METHODS: Changes in cellular metabolism in response to radiation are tracked by fluorescence lifetime of NADH...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045433/functions-and-epigenetic-regulation-of-wwox-in-bone-metastasis-from-breast-carcinoma-comparison-with-primary-tumors
#13
REVIEW
Paola Maroni, Emanuela Matteucci, Paola Bendinelli, Maria Alfonsina Desiderio
Epigenetic mechanisms influence molecular patterns important for the bone-metastatic process, and here we highlight the role of WW-domain containing oxidoreductase (Wwox). The tumor-suppressor Wwox lacks in almost all cancer types; the variable expression in osteosarcomas is related to lung-metastasis formation, and exogenous Wwox destabilizes HIF-1α (subunit of Hypoxia inducible Factor-1, HIF-1) affecting aerobic glycolysis. Our recent studies show critical functions of Wwox present in 1833-osteotropic clone, in the corresponding xenograft model, and in human bone metastasis from breast carcinoma...
January 1, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28042952/uncoupling-protein-2-downregulation-by-hypoxia-through-repression-of-peroxisome-proliferator-activated-receptor-%C3%AE-promotes-chemoresistance-of-non-small-cell-lung-cancer
#14
Mingxing Wang, Guoyin Li, Zhiwei Yang, Lei Wang, Lei Zhang, Ting Wang, Yimeng Zhang, Shengli Zhang, Yong Han, Lintao Jia
Hypoxic microenvironment is critically involved in the response of non-small cell lung cancer (NSCLC) to chemotherapy, the mechanisms of which remain largely unknown. Here, we found that NSCLC patients exhibited increased chemotherapeutic resistance when complicated by chronic obstructive pulmonary disease (COPD), a critical cause of chronic hypoxemia. The downregulation of uncoupling protein 2 (UCP2), which is attributed to hypoxia-inducible factor 1 (HIF-1)-mediated suppression of the transcriptional factor peroxisome proliferator-activated receptor γ (PPARγ), was involved in NSCLC chemoresistance, and predicted a poor survival rate of patients receiving routine chemotherapy...
December 22, 2016: Oncotarget
https://www.readbyqxmd.com/read/28031935/interaction-between-hypoxia-akt-and-hif-1-signaling-in-hnscc-and-nsclc-implications-for-future-treatment-strategies
#15
Hanneke Stegeman, Paul N Span, Wenny Jm Peeters, Marieke Mg Verheijen, Reidar Grénman, Tineke Wh Meijer, Johannes Ham Kaanders, Johan Bussink
BACKGROUND: Hypoxia is a negative prognostic factor and this study investigated the relationship between hypoxia, hypoxia inducible factor 1 (HIF-1) and AKT signaling in head and neck squamous cell carcinoma (HNSCC) and non-small-cell lung cancer (NSCLC). RESULTS/METHODOLOGY: pAKT was induced by hypoxia (0.5% O2) in a part of HNSCC (3/4) and squamous (2/3) and adenocarcinoma (1/3) NSCLS lines. AKT-inhibitor MK-2206 reduced hypoxic HIF-1 signaling in most HNSCC cell lines...
March 2016: Future Science OA
https://www.readbyqxmd.com/read/28030556/hepatocyte-hypoxia-inducible-factor-1-mediates-the-development-of-liver-fibrosis-in-a-mouse-model-of-nonalcoholic-fatty-liver-disease
#16
Omar A Mesarwi, Mi-Kyung Shin, Shannon Bevans-Fonti, Christina Schlesinger, Janet Shaw, Vsevolod Y Polotsky
BACKGROUND: Obstructive sleep apnea (OSA) is associated with the progression of non-alcoholic fatty liver disease (NAFLD) to steatohepatitis and fibrosis. This progression correlates with the severity of OSA-associated hypoxia. In mice with diet induced obesity, hepatic steatosis leads to liver tissue hypoxia, which worsens with exposure to intermittent hypoxia. Emerging data has implicated hepatocyte cell signaling as an important factor in hepatic fibrogenesis. We hypothesized that hepatocyte specific knockout of the oxygen sensing α subunit of hypoxia inducible factor-1 (HIF-1), a master regulator of the global response to hypoxia, may be protective against the development of liver fibrosis...
2016: PloS One
https://www.readbyqxmd.com/read/28028936/hypoxia-inducible-factor-1-promotes-chemoresistance-of-lung-cancer-by-inducing-carbonic-anhydrase-ix-expression
#17
Terumasa Sowa, Toshi Menju, Toyofumi F Chen-Yoshikawa, Koji Takahashi, Shigeto Nishikawa, Takao Nakanishi, Kei Shikuma, Hideki Motoyama, Kyoko Hijiya, Akihiro Aoyama, Toshihiko Sato, Makoto Sonobe, Hiroshi Harada, Hiroshi Date
Lung cancer treatment is difficult owing to chemoresistance. Hypoxia-inducible factor 1 (HIF-1) and HIF-1-induced glycolysis are correlated with chemoresistance; however, this is not evident in lung cancer. We investigated the effect of HIF-1α and carbonic anhydrase IX (CAIX), a transmembrane protein neutralizing intracellular acidosis, on chemoresistance and prognosis of lung cancer patients after induction chemoradiotherapy. Associations of HIF-1α, glucose transporter 1 (GLUT1), and CAIX with chemoresistance of lung cancer were investigated using A549 lung cancer cells under normoxia or hypoxia in vitro...
December 28, 2016: Cancer Medicine
https://www.readbyqxmd.com/read/28026810/-development-of-blood-brain-barrier-under-the-modulation-of-hif-activity-in-astroglialand-neuronal-cells-in-vitro
#18
V A Ruzaeva, A V Morgun, E D Khilazheva, N V Kuvacheva, E A Pozhilenkova, E B Boitsova, G P Martynova, T E Taranushenko, A B Salmina
Barriergenesis is the process of maturation of the primary vascular network of the brain responsible for the establishment of the blood-brain barrier. It represents a combination of factors that, on the one hand, contribute to the process of migration and tubulogenesis of endothelial cells (angiogenesis), on the other hand, contribute to the formation of new connections between endothelial cells and other elements of the neurovascular unit. Astrocytes play a key role in barriergenesis, however, mechanisms of their action are still poorly examined...
November 2016: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/28018235/modulation-of-muscle-fiber-compositions-in-response-to-hypoxia-via-pyruvate-dehydrogenase-kinase-1
#19
Daniel D Nguyen, Gyuyoup Kim, Eung-Kwon Pae
Muscle fiber-type changes in hypoxic conditions in accordance with pyruvate dehydrogenase kinase (Pdk)-1 and hypoxia inducible factor (Hif)-1α were investigated in rats. Hif-1α and its down-stream molecule Pdk-1 are well known for readily response to hypoxia. We questioned their roles in relation to changes in myosin heavy chain (MyHC) composition in skeletal muscles. We hypothesize that the level of Pdk-1 with respect to the level of Hif-1α determines MyHC composition of the muscle in rats in hypoxia. Young male rats were housed in a chamber maintained at 11...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/28017872/nitrite-derived-nitric-oxide-reduces-hypoxia-inducible-factor-1%C3%AE-mediated-extracellular-vesicle-production-by-endothelial-cells
#20
Nicholas Burnley-Hall, Gareth Willis, Jessica Davis, D Aled Rees, Philip E James
INTRODUCTION: Extracellular vesicles (EVs) are small, spherical particles enclosed by a phospholipid bilayer (∼30-1000 nm) released from multiple cell types, and have been shown to have pathophysiological roles in a plethora of disease states. The transcription factor hypoxia-inducible factor-1 (HIF-1) allows for adaptation of cellular physiology in hypoxia and may permit the enhanced release of EVs under such conditions. Nitric oxide (NO) plays a pivotal role in vascular homeostasis, and can modulate the cellular response to hypoxia by preventing HIF-1 accumulation...
December 23, 2016: Nitric Oxide: Biology and Chemistry
keyword
keyword
83420
1
2
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"