keyword
MENU ▼
Read by QxMD icon Read
search

Mek

keyword
https://www.readbyqxmd.com/read/28225038/direct-binding-of-mek1-and-mek2-to-akt-induces-foxo1-phosphorylation-cellular-migration-and-metastasis
#1
Shiri Procaccia, Merav Ordan, Izel Cohen, Sarit Bendetz-Nezer, Rony Seger
Crosstalk between the ERK cascade and other signaling pathways is one of the means by which it acquires its signaling specificity. Here we identified a direct interaction of both MEK1 and MEK2 with AKT. The interaction is mediated by the proline rich domain of MEK1/2 and regulated by phosphorylation of Ser298 in MEK1, or Ser306 in MEK2, which we identified here as a novel regulatory site. We further developed a blocking peptide, which inhibits the interaction between MEK and AKT, and when applied to cells, affects migration and adhesion, but not proliferation...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28224120/oncolytic-virotherapy-including-rigvir-and-standard-therapies-in-malignant-melanoma
#2
REVIEW
Hani M Babiker, Irbaz Bin Riaz, Muhammad Husnain, Mitesh J Borad
The treatment of metastatic melanoma has evolved from an era where interferon and chemotherapy were the mainstay of treatments to an era where immunotherapy has become the frontline. Ipilimumab (IgG1 CTLA-4 inhibitor), nivolumab (IgG4 PD-1 inhibitor), pembrolizumab (IgG4 PD-1 inhibitor) and nivolumab combined with ipilimumab have become first-line therapies in patients with metastatic melanoma. In addition, the high prevalence of BRAF mutations in melanoma has led to the discovery and approval of targeted molecules, such as vemurafenib (BRAF kinase inhibitor) and trametinib (MEK inhibitor), as they yielded improved responses and survival in malignant melanoma patients...
2017: Oncolytic Virotherapy
https://www.readbyqxmd.com/read/28223824/mir182-activates-the-ras-mek-erk-pathway-in-human-oral-cavity-squamous-cell-carcinoma-by-suppressing-rasa1-and-spred1
#3
Jinhui Wang, Wei Wang, Jichen Li, Liji Wu, Mei Song, Qinggang Meng
PURPOSE: The constitutive activation of the Ras-MEK-ERK signaling pathway in oral cavity squamous cell carcinoma (OSCC) has been found to be tightly controlled at multiple levels under physiological conditions. RASA1 and SPRED1 are two important negative regulators of this pathway, but the exact regulating mechanism remains unclear. In this study, we aimed to explore the potential regulating mechanisms involved in the Ras-MEK-ERK signaling pathway in OSCC. MATERIALS AND METHODS: MicroRNA (miRNA) expression was detected by quantitative reverse-transcription polymerase chain reaction...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28223185/nanomedicine-as-a-potent-strategy-in-melanoma-tumor-microenvironment
#4
REVIEW
Vincent Pautu, Daniela Leonetti, Elise Lepeltier, Nicolas Clere, Catherine Passirani
Melanoma originated from melanocytes is the most aggressive type of skin cancer. Despite considerable progresses in clinical treatment with the discovery of BRAF or MEK inhibitors and monoclonal antibodies, the durability of response to treatment is often limited to the development of acquired resistance and systemic toxicity. The limited success of conventional treatment highlights the importance of understanding the role of melanoma tumor microenvironment in tumor developement and drug resistance. Nanoparticles represent a promising strategy for the development of new cancer treatments able to improve the bioavailability of drugs and increase their penetration by targeting specifically tumours cells and/or tumour environment...
February 18, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28222227/recurrent-tattoo-reactions-in-a-patient-treated-with-braf-and-mek-inhibitors
#5
Raphael Reinhard, Christoffer Gebhardt, Astrid Schmieder, Viktor Umansky, Jochen Utikal
Commonly tattoo reactions are acute occurrences in correspondence to tattoo ink. They usually present during the first 2 to 3 weeks, after the tattoo was done. Tattoo reactions can be classified as acute inflammatory reactions, allergic hypersensitivities, granulomatous and pseudolymphomatous types of reactions.(1) This article is protected by copyright. All rights reserved.
February 21, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28220977/evaluation-of-di-potassium-and-tri-potassium-edta-evacuated-tubes-for-routine-haematological-testing
#6
Rubaida Mehmood, Rabia Khushi Muhammed, Sajjid Hussain, Aniqa Sana
BACKGROUND: The influence of blood collection devices on laboratory tests is often overlooked. We have discussed here how blood collection materials and devices can alter haematological test results, with an emphasis on blood collection tube (BCT) additives. We have compared K2 & K3-EDTA vacuum tubes of same manufacturer IMPROVACUTER (®) for CBC analysis. METHODS: Blood was collected in both tubes simultaneously. Samples were analysed immediately after collection (<15 minutes) and after 4 hours by MEK-6318J/K Haematology Analyzer...
February 21, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28220839/pten-status-is-a-crucial-determinant-of-the-functional-outcome-of-combined-mek-and-mtor-inhibition-in-cancer
#7
Michele Milella, Italia Falcone, Fabiana Conciatori, Silvia Matteoni, Andrea Sacconi, Teresa De Luca, Chiara Bazzichetto, Vincenzo Corbo, Michele Simbolo, Isabella Sperduti, Antonina Benfante, Anais Del Curatolo, Ursula Cesta Incani, Federico Malusa, Adriana Eramo, Giovanni Sette, Aldo Scarpa, Marina Konopleva, Michael Andreeff, James Andrew McCubrey, Giovanni Blandino, Matilde Todaro, Giorgio Stassi, Ruggero De Maria, Francesco Cognetti, Donatella Del Bufalo, Ludovica Ciuffreda
Combined MAPK/PI3K pathway inhibition represents an attractive, albeit toxic, therapeutic strategy in oncology. Since PTEN lies at the intersection of these two pathways, we investigated whether PTEN status determines the functional response to combined pathway inhibition. PTEN (gene, mRNA, and protein) status was extensively characterized in a panel of cancer cell lines and combined MEK/mTOR inhibition displayed highly synergistic pharmacologic interactions almost exclusively in PTEN-loss models. Genetic manipulation of PTEN status confirmed a mechanistic role for PTEN in determining the functional outcome of combined pathway blockade...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220783/an-integrative-approach-unveils-fosl1-as-an-oncogene-vulnerability-in-kras-driven-lung-and-pancreatic-cancer
#8
Adrian Vallejo, Naiara Perurena, Elisabet Guruceaga, Pawel K Mazur, Susana Martinez-Canarias, Carolina Zandueta, Karmele Valencia, Andrea Arricibita, Dana Gwinn, Leanne C Sayles, Chen-Hua Chuang, Laura Guembe, Peter Bailey, David K Chang, Andrew Biankin, Mariano Ponz-Sarvise, Jesper B Andersen, Purvesh Khatri, Aline Bozec, E Alejandro Sweet-Cordero, Julien Sage, Fernando Lecanda, Silve Vicent
KRAS mutated tumours represent a large fraction of human cancers, but the vast majority remains refractory to current clinical therapies. Thus, a deeper understanding of the molecular mechanisms triggered by KRAS oncogene may yield alternative therapeutic strategies. Here we report the identification of a common transcriptional signature across mutant KRAS cancers of distinct tissue origin that includes the transcription factor FOSL1. High FOSL1 expression identifies mutant KRAS lung and pancreatic cancer patients with the worst survival outcome...
February 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28220250/differing-roles-for-sur-2-med23-in-c-elegans-and-c-briggsae-vulval-development
#9
Karley K Mahalak, Abdulrahman M Jama, Steven J Billups, Adriana T Dawes, Helen M Chamberlin
Normal vulval development in the nematode Caenorhabditis briggsae is identical to that in the related Caenorhabditis elegans. However, several experiments suggest that there are differences between the two species with respect to the contribution of EGF/Ras signaling. To investigate these differences genetically, we have characterized a C. briggsae mutant strain that phenocopies the effect observed when C. briggsae animals are treated with U0126, an inhibitor of the EGF pathway component MEK. We identify that the gene affected in the mutant strain is Cbr-sur-2, which encodes a MED23 mediator complex protein that acts downstream of EGF signaling in C...
February 20, 2017: Development Genes and Evolution
https://www.readbyqxmd.com/read/28220061/a-model-of-induction-of-cerebellar-long-term-depression-including-rkip-inactivation-of-raf-and-mek
#10
Iain Hepburn, Anant Jain, Himanshu Gangal, Yukio Yamamoto, Keiko Tanaka-Yamamoto, Erik De Schutter
We report an updated stochastic model of cerebellar Long Term Depression (LTD) with improved realism. Firstly, we verify experimentally that dissociation of Raf kinase inhibitor protein (RKIP) from Mitogen-activated protein kinase kinase (MEK) is required for cerebellar LTD and add this interaction to an earlier published model, along with the known requirement of dissociation of RKIP from Raf kinase. We update Ca(2+) dynamics as a constant-rate influx, which captures experimental input profiles accurately...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28218693/propylene%C3%A2-glycol%C3%A2-alginate%C3%A2-sodium%C3%A2-sulfate%C3%A2-alleviates%C3%A2-cerulein-induced%C3%A2-acute%C3%A2-pancreatitis%C3%A2-by%C3%A2-modulating%C3%A2-the%C3%A2-mek-erk%C3%A2-pathway%C3%A2-in%C3%A2-mice
#11
Hui Zhang, Yueyue Li, Linqiang Li, Hua Liu, Liangkai Hu, Ying Dai, Jianqing Chen, Shuqi Xu, Weimin Chen, Xiaorong Xu, Xuanfu Xu
Previous studies have focused on the effects of propylene glycol alginate sodium sulfate  (PSS)  against  thrombosis,  but  the  anti-inflammatory  potential  is  unknown.  Therefore,  we  specifically focused on the protective effects of PSS on cerulein-induced acute pancreatitis (AP)  using a mouse model, and investigated the mechanism of PSS on autophagy and apoptosis via the  Mitogen-activated  protein  kinase  (MEK)/extracellular  signal-regulated  kinase  (ERK)  pathway...
February 17, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28218307/effects-of-u0126-and-mk2206-on-cell-growth-and-re-growth-of-endometriotic-stromal-cells-grown-on-substrates-of-varying-stiffness
#12
Sachiko Matsuzaki, Jean-Luc Pouly, Michel Canis
Endometriosis is a common gynecological disorder responsible for infertility and pelvic pain. A complete cure for patients with endometriosis awaits new targets and strategies. Here we show that U0126 (a MEK inhibitor) and MK2206 (an AKT inhibitor) synergistically inhibit cell growth of deep endometriotic stromal cells (DES) grown on polyacrylamide gel substrates (PGS) of varying stiffness (2 or 30 kilopascal [kPa]) or plastic in vitro. No significant differences in cell proliferation were observed among DES, endometrial stromal cells of patients with endometriosis (EES) from the proliferative phase (P), EES-S (secretory phase) and EES-M (menstrual phase) compared to cells grown on a substrate of the same stiffness at both higher (U0126 [30 μM] and MK2206 [9 μM]) and lower (U0126 [15 μM] and MK2206 [4...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28216156/exchange-proteins-directly-activated-by-camp-induce-the-proliferation-of-rat-anterior-pituitary-gh3-cells-via-the-activation-of-extracellular-signal-regulated-kinase
#13
Wei Sun, Wei Jiao, Yimin Huang, Ran Li, Zhuo Zhang, Junwen Wang, Ting Lei
Cyclic adenosine 3'-5'-monophosphate (cAMP) plays a crucial role in regulating pituitary cell proliferation and hormone synthesis. Recent evidence suggests that exchange proteins directly activated by cAMP (Epacs) may mediate the effects of cAMP. Here we used rat anterior pituitary GH3 cells as the experiment model to demonstrate that forskolin increased the proliferation of GH3 cells and the phosphorylation of ERK1/2, and these effects were inhibited by PKA or Epac inhibitors. Epac activator 8-pCPT-2'-O-Me-cAMP increased GH3 cell proliferation and this was blocked by ESI-09, an Epac inhibitor...
February 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28215740/inhibition-of-htert-expression-by-map-kinase-inhibitor-induces-cell-death-in-renal-cell-carcinoma
#14
Deeksha Pal, Ujjawal Sharma, Shrawan Kumar Singh, Nandita Kakkar, Rajendra Prasad
BACKGROUND: Human telomerase reverse transcriptase (hTERT) is one of the components of telomerase enzyme and its activity is associated with cell proliferation and differentiation. Extracellular signal regulated kinase (ERK)-mitogen activated protein kinase signaling pathway play an important role in hTERT expression. The present study was conducted to ascertain hTERT messenger RNA (mRNA) expression in renal cell carcinoma (RCC) and its association with clinicopathological characteristics...
February 16, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28215705/kras-allelic-imbalance-enhances-fitness-and-modulates-map-kinase-dependence-in-cancer
#15
Michael R Burgess, Eugene Hwang, Rana Mroue, Craig M Bielski, Anica M Wandler, Benjamin J Huang, Ari J Firestone, Amy Young, Jennifer A Lacap, Lisa Crocker, Saurabh Asthana, Elizabeth M Davis, Jin Xu, Keiko Akagi, Michelle M Le Beau, Qing Li, Benjamin Haley, David Stokoe, Deepak Sampath, Barry S Taylor, Marie Evangelista, Kevin Shannon
Investigating therapeutic "outliers" that show exceptional responses to anti-cancer treatment can uncover biomarkers of drug sensitivity. We performed preclinical trials investigating primary murine acute myeloid leukemias (AMLs) generated by retroviral insertional mutagenesis in Kras(G12D) "knockin" mice with the MEK inhibitor PD0325901 (PD901). One outlier AML responded and exhibited intrinsic drug resistance at relapse. Loss of wild-type (WT) Kras enhanced the fitness of the dominant clone and rendered it sensitive to MEK inhibition...
February 16, 2017: Cell
https://www.readbyqxmd.com/read/28214826/emodin-increases-expression-of-insulin-like-growth-factor-binding-protein-1-through-activation-of-mek-erk-ampk%C3%AE-and-interaction-of-ppar%C3%AE-and-sp1-in-lung-cancer
#16
Qing Tang, JingJing Wu, Fang Zheng, Swei Sunny Hann, YuQing Chen
BACKGROUND: Emodin has anti-neoplastic activities on multiple tumors. However, the molecular mechanisms underlying this effect still remain to be fully understood. METHODS: Cell viability and cell cycle distribution were measured using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assays and flow cytometry, respectively. Cell invasion and migration were examined by transwell invasion and wound healing assays. Western blot analysis was performed to examine the phosphorylation and protein expression of AMP-activated protein kinase alpha (AMPKα), extracellular signaling-regulated kinase 1/2 (ERK1/2), peroxisome proliferators-activated receptor gamma (PPARγ), insulin-like growth factor (IGF) binding protein 1 (IGFBP1) and the transcription factor Sp1...
January 26, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28212889/inhibition-of-proliferation-and-invasion-in-2d-and-3d-models-by-2-methoxyestradiol-in-human-melanoma-cells
#17
R R Massaro, F Faião-Flores, V W Rebecca, S Sandri, D K Alves-Fernandes, P C Pennacchi, K S M Smalley, S S Maria-Engler
Despite the recent advances in the clinical management of melanoma, there remains a need for new pharmacological approaches to treat this cancer. 2-methoxyestradiol (2ME) is a metabolite of estrogen that has shown anti-tumor effects in many cancer types. In this study we show that 2ME treatment leads to growth inhibition in melanoma cells, an effect associated with entry into senescence, decreased pRb and CyclinB1 expression, increased p21/Cip1 expression and G2/M cell cycle arrest. 2ME treatment also inhibits melanoma cell growth in colony formation assays, including cell lines with acquired resistance to BRAF and BRAF+MEK inhibitors...
February 14, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28212537/itraconazole-exerts-its-anti-melanoma-effect-by-suppressing-hedgehog-wnt-and-pi3k-mtor-signaling-pathways
#18
Guanzhao Liang, Musang Liu, Qiong Wang, Yongnian Shen, Huan Mei, Dongmei Li, Weida Liu
Malignant melanoma is the deadliest form of all skin cancers. Itraconazole, a commonly used systemic antifungal drug, has been tested for its anti-tumor effects on basal cell carcinoma, prostate cancer, and non-small cell lung cancer. Whether itraconazole has any specific anti-tumor effect on melanoma remains unknown. However, the goal of this study is to investigate the effect of itraconazole on melanoma and to reveal some details of its underlying mechanism. In the in vivo xenograft mouse model, we find that itraconazole can inhibit melanoma growth and extend the survival of melanoma xenograft mice, compared to non-itraconazole-treated mice...
February 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212360/is-there-a-role-for-single-agent-mek-inhibition-in-melanoma
#19
Douglas Johnson
No abstract text is available yet for this article.
December 2016: Clinical Advances in Hematology & Oncology: H&O
https://www.readbyqxmd.com/read/28212293/targeting-angiogenesis-in-biliary-tract-cancers-an-open-option
#20
REVIEW
Valeria Simone, Oronzo Brunetti, Luigi Lupo, Mario Testini, Eugenio Maiorano, Michele Simone, Vito Longo, Christian Rolfo, Marc Peeters, Aldo Scarpa, Amalia Azzariti, Antonio Russo, Domenico Ribatti, Nicola Silvestris
Biliary tract cancers (BTCs) are characterized by a bad prognosis and the armamentarium of drugs for their treatment is very poor. Although the inflammatory status of biliary tract represents the first step in the cancerogenesis, the microenvironment also plays a key role in the pathogenesis of BTCs, promoting tumor angiogenesis, invasion and metastasis. Several molecules, such as vascular endothelial growth factor (VEGF) and fibroblast growth factor (FGF), are involved in the angiogenesis process and their expression on tumor samples has been explored as prognostic marker in both cholangiocarcinoma and gallbladder cancer...
February 15, 2017: International Journal of Molecular Sciences
keyword
keyword
111027
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"