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Epithelial growth factor receptor

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https://www.readbyqxmd.com/read/29790306/the-role-of-novel-prognostic-markers-prox1-and-foxc2-in-carcinogenesis-of-oral-squamous-cell-carcinoma
#1
Neha S Agnihotri, Madhusudan Astekar
Oral squamous cell carcinoma is the most common malignant tumor of the head and neck regions and accounts for more than 90% of cancers in the oral cavity. The angiogenesis, lymphangiogenesis and epithelial mesenchymal transition are known to be pivotal for tumor progression and metastasis. In the last decade, much data has been generated concerning the molecular mechanisms of angiogenesis, lymphangiogenesis and its significance in pathological conditions. The main angiogenic and lymphangiogenic factors have been identified as vascular endothelial growth factor A (VEGF-A), vascular endothelial growth factor receptor 2 (VEGFR-2), forkhead box (FOX) C2 while vascular endothelial growth factor C/D (VEGF-C/D), vascular endothelial growth factor receptor 3 (VEGFR-3), Prospero homeobox 1 (PROX1), LYVE-1, podoplanin, Tie/Angioprotein (Ang) 2 and EphrinB2 respectively...
May 2018: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/29789683/bmp-2-restoration-aids-in-recovery-from-liver-fibrosis-by-attenuating-tgf-%C3%AE-1-signaling
#2
Yueh-Hua Chung, Ying-Hsien Huang, Tien-Huei Chu, Chun-Lin Chen, Pey-Ru Lin, Shih-Chung Huang, Deng-Chyang Wu, Chao-Cheng Huang, Tsung-Hui Hu, Ying-Hsien Kao, Ming-Hong Tai
Transforming growth factor-β (TGF-β) plays a central role in hepatic fibrogenesis. This study investigated the function and mechanism of bone morphogenetic protein-2 (BMP-2) in regulation of hepatic fibrogenesis. BMP-2 expression in fibrotic liver was measured in human tissue microarray and mouse models of liver fibrosis induced by bile duct ligation surgery or carbon tetrachloride administration. Adenovirus-mediated BMP-2 gene delivery was used to test the prophylactic effect on liver fibrosis. Primary hepatic stellate cells (HSC), HSC-T6 and clone-9 cell lines were used to study the interplay between BMP-2 and TGF-β1...
May 22, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29789259/synthesis-characterization-and-cytotoxicity-studies-of-1-2-3-triazoles-and-1-2-4-triazolo-1-5-a-pyrimidines-in-human-breast-cancer-cells
#3
Maryam Gilandoust, Kachigere B Harsha, Chakrabhavi Dhananjaya Mohan, Ainiah Rushdiana Raquib, Shobith Rangappa, Vijay Pandey, Peter E Lobie, Basappa, Kanchugarakoppal S Rangappa
Vascular endothelial growth factor (VEGF) and its receptor (VEGFR) is essential for physiological functions of tissues and neovasculature. VEGFR signaling is associated with the progression of pathological angiogenesis in various types of malignancies, making it an attractive therapeutic target in cancer treatment. In the present work, we report the synthesis of 1,4-disubstituted 1,2,3-triazoles and 1,2,4-triazolo[1, 5-a]pyrimidine derivatives via copper (I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction and screened for their anticancer activity against MCF7 cells...
May 9, 2018: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29788230/tumor-infiltrating-lymphocytes-in-patients-receiving-trastuzumab-pertuzumab-based-chemotherapy-a-tryphaena-substudy
#4
Michail Ignatiadis, Gert Van den Eynden, Salgado Roberto, Marco Fornili, Yacine Bareche, Christine Desmedt, Françoise Rothé, Marion Maetens, David Venet, Esther Holgado, Virginia McNally, Astrid Kiermaier, Heidi M Savage, Timothy R Wilson, Javier Cortes, Andreas Schneeweiss, Karen Willard-Gallo, Elia Biganzoli, Christos Sotiriou
Background: There is an urgent requirement to identify biomarkers to tailor treatment in human epidermal growth factor receptor 2 (HER2)-amplified early breast cancer treated with trastuzumab/pertuzumab-based chemotherapy. Methods: Among the 225 patients randomly assigned to trastuzumab/pertuzumab concurrently or sequentially with an anthracycline-containing regimen or concurrently with an anthracycline-free regimen in the Tryphaena trial, we determined the percentage of tumor-infiltrating lymphocytes (TILs) at baseline in 213 patients, of which 126 demonstrated a pathological complete response (pCR; ypT0/is ypN0), with 28 demonstrating event-free survival (EFS) events...
May 18, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29786867/growth-hormone-releasing-hormone-antagonists-reduce-prostatic-enlargement-and-inflammation-in-carrageenan-induced-chronic-prostatitis
#5
Petra Popovics, Renzhi Cai, Wei Sha, Ferenc G Rick, Andrew V Schally
BACKGROUND: Inflammation plays a key role in the etiology of benign prostatic hyperplasia (BPH) through multiple pathways involving the stimulation of proliferation by cytokines and growth factors as well as the induction of the focal occurrence of epithelial-to-mesenchymal transition (EMT). We have previously reported that GHRH acts as a prostatic growth factor in experimental BPH and in autoimmune prostatitis models and its blockade with GHRH antagonists offer therapeutic approaches for these conditions...
May 21, 2018: Prostate
https://www.readbyqxmd.com/read/29782499/tgf%C3%AE-signaling-limits-lineage-plasticity-in-prostate-cancer
#6
Yi Hao, Glen A Bjerke, Karolina Pietrzak, Tiffany A Melhuish, Yu Han, Stephen D Turner, Henry F Frierson, David Wotton
Although treatment options for localized prostate cancer (CaP) are initially effective, the five-year survival for metastatic CaP is below 30%. Mutation or deletion of the PTEN tumor suppressor is a frequent event in metastatic CaP, and inactivation of the transforming growth factor (TGF) ß signaling pathway is associated with more advanced disease. We previously demonstrated that mouse models of CaP based on inactivation of Pten and the TGFß type II receptor (Tgfbr2) rapidly become invasive and metastatic...
May 21, 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29775731/targeted-and-controlled-drug-delivery-by-multifunctional-mesoporous-silica-nanoparticles-with-internal-fluorescent-conjugates-and-external-polydopamine-and-graphene-oxide-layers
#7
Anh-Vy Tran, KyuHwan Shim, Thu-Thao Vo Thi, Jeong-Keun Kook, Seong Soo A An, Sang-Wha Lee
This study demonstrated the targeted delivery and controlled release of cisplatin drug molecules from doubly decorated mesoporous silica nanoparticles (MSNs), which were internally grafted with fluorescent conjugates and externally coated with polydopamine (PDA) and graphene oxide (GO) layers. The brush-like internal conjugates conferred fluorescent functionality and high capacity of cisplatin loading into MSNs, as well as contributing to a sustained release of the cisplatin through a porous channel with the assistance of external PDA layer...
May 15, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29774119/periostin-a-signal-transduction-intermediate-in-tgf-%C3%AE-induced-emt-in-u-87mg-human-glioblastoma-cells-and-its-inhibition-by-anthocyanidins
#8
Amira Ouanouki, Sylvie Lamy, Borhane Annabi
Periostin is a secreted protein that is highly expressed in glioblastoma cells as compared to normal brain tissue, and is therefore considered as a potential biomarker in therapeutic modalities. Its contribution in the cancer cells invasive phenotype is, however, poorly understood. This work investigates the role of periostin in U-87 MG glioblastoma cell invasion, cell migration and in Transforming Growth Factor β (TGF-β)-induced epithelial-mesenchymal transition (EMT). Periostin gene silencing, using small interfering RNA, decreased TGF-β-induced mesenchymal marker expression of fibronectin and vimentin, partly through reduced Smad2, Akt and Fak phosphorylation as well as U-87 MG cell invasion and migration...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29772789/downregulation-of-the-s1p-transporter-spinster-homology-protein-2-spns2-exerts-an-anti-fibrotic-and-anti-inflammatory-effect-in-human-renal-proximal-tubular-epithelial-cells
#9
Olivier Blanchard, Bisera Stepanovska, Manuel Starck, Martin Erhardt, Isolde Römer, Dagmar Meyer Zu Heringdorf, Josef Pfeilschifter, Uwe Zangemeister-Wittke, Andrea Huwiler
Sphingosine kinase (SK) catalyses the formation of sphingosine 1-phosphate (S1P), which acts as a key regulator of inflammatory and fibrotic reactions, mainly via S1P receptor activation. Here, we show that in the human renal proximal tubular epithelial cell line HK2, the profibrotic mediator transforming growth factor β (TGFβ) induces SK-1 mRNA and protein expression, and in parallel, it also upregulates the expression of the fibrotic markers connective tissue growth factor (CTGF) and fibronectin. Stable downregulation of SK-1 by RNAi resulted in the increased expression of CTGF, suggesting a suppressive effect of SK-1-derived intracellular S1P in the fibrotic process, which is lost when SK-1 is downregulated...
May 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29771943/cross-talk-between-human-airway-epithelial-cells-and-3t3-j2-feeder-cells-involves-partial-activation-of-human-met-by-murine-hgf
#10
Robert E Hynds, Kate H C Gowers, Ersilia Nigro, Colin R Butler, Paola Bonfanti, Adam Giangreco, Cecilia M Prêle, Sam M Janes
There is considerable interest in the ex vivo propagation of primary human basal epithelial stem/progenitor cells with a view to their use in drug development, toxicity testing and regenerative medicine. These cells can be expanded in co-culture with mitotically inactivated 3T3-J2 murine embryonic feeder cells but, similar to other epithelial cell culture systems employing 3T3-J2 cells, the aspects of cross-talk between 3T3-J2 cells and human airway basal cells that are critical for their expansion remain largely unknown...
2018: PloS One
https://www.readbyqxmd.com/read/29768059/pentabromopseudilin-a-myosin-v-inhibitor-suppresses-tgf-%C3%AE-activity-by-recruiting-the-type-ii-tgf-%C3%AE-receptor-to-lysosomal-degradation
#11
Wang Shih-Wei, Chung Chih-Ling, Yu-Chen Kao, René Martin, Hans-Joachim Knölker, Meng-Shin Shiao, Chun-Lin Chen
Pentabromopseudilin (PBrP) is a marine antibiotic isolated from the marine bacteria Pseudomonas bromoutilis and Alteromonas luteoviolaceus. PBrP exhibits antimicrobial, anti-tumour, and phytotoxic activities. In mammalian cells, PBrP is known to act as a reversible and allosteric inhibitor of myosin Va (MyoVa). In this study, we report that PBrP is a potent inhibitor of transforming growth factor-β (TGF-β) activity. PBrP inhibits TGF-β-stimulated Smad2/3 phosphorylation, plasminogen activator inhibitor-1 (PAI-1) protein production and blocks TGF-β-induced epithelial-mesenchymal transition in epithelial cells...
December 2018: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/29767399/a-decreased-soluble-klotho-level-with-normal-egfr-fgf23-serum-phosphate-and-fep-in-an-adpkd-patient-with-enlarged-kidneys-due-to-multiple-cysts
#12
Takahiro Kanai, Kazuhiro Shiizaki, Hiroyuki Betsui, Jun Aoyagi, Takanori Yamagata
Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary renal disorder. ADPKD is characterized clinically by the presence of multiple bilateral renal cysts that lead to chronic renal failure. The cysts evolve from renal tubular epithelial cells that express the Klotho gene. Notably, Klotho acts as a co-receptor for fibroblast growth factor 23 (FGF23); in this context, it induces phosphaturia and maintains serum phosphate at a normal level. Many reports have shown that decreases in the soluble Klotho level and increases in the FGF23 level are associated with glomerular filtration rate (GFR) decline, but a recent study observed these changes in patient with normal eGFR...
May 16, 2018: CEN Case Reports
https://www.readbyqxmd.com/read/29767258/pd-l1-mrna-expression-in-egfr-mutant-lung-adenocarcinoma
#13
Kazutoshi Isobe, Atsushi Kakimoto, Tetuo Mikami, Kyohei Kaburaki, Hiroshi Kobayashi, Takahiro Yoshizawa, Yuta Nakano, Takashi Makino, Hajime Otsuka, Go Sano, Keishi Sugino, Susumu Sakamoto, Yujiro Takai, Naobumi Tochigi, Akira Iyoda, Sakae Homma
Molecular mechanisms of programmed death-ligand 1 (PD-L1) mRNA expression and roles of apoptosis and biomarkers are poorly understood in epidermal growth factor receptor (EGFR)-mutant lung adenocarcinoma patients. Thirty-three patients with recurrent postoperative EGFR-mutant lung adenocarcinoma (exon 19 deletion in 16, L858R in 15, G719C in 2 patients) treated with gefitinib were studied. PD-L1 mRNA expression of formalin-fixed paraffin-embedded paratumoral and intratumoral tissues was quantified by PCR. Correlations of PD-L1 mRNA expression with BIM, p53 upregulated modular of apoptosis (PUMA), human epidermal growth factor receptor 2 (HER2), mesenchymal-epithelial transition (MET), EGFR, and vascular endothelial growth factor A (VEGFA) were determined...
May 16, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29764507/aldolase-a-promotes-proliferation-and-g-1-s-transition-via-the-egfr-mapk-pathway-in-non-small-cell-lung-cancer
#14
Hailu Fu, Huijun Gao, Xiaoyu Qi, Lei Zhao, Donghua Wu, Yuxin Bai, Huimin Li, Xuan Liu, Jun Hu, Shujuan Shao
BACKGROUND: Our previous study demonstrated that aldolase A (ALDOA) is overexpressed in clinical human lung squamous cell carcinoma and that ALDOA promotes epithelial-mesenchymal transition and tumorigenesis. The present study aimed to explore the function of ALDOA in the modulation of non-small cell lung cancer (NSCLC) proliferation and cell cycle progression and the potential mechanism. METHODS: ALDOA was knocked down by short hairpin RNA in H520 and H1299 cells...
May 8, 2018: Cancer communications
https://www.readbyqxmd.com/read/29763890/mir-301a-3p-suppresses-estrogen-signaling-by-directly-inhibiting-esr1-in-er%C3%AE-positive-breast-cancer
#15
Sandra Lettlova, Veronika Brynychova, Jan Blecha, David Vrana, Magdalena Vondrusova, Pavel Soucek, Jaroslav Truksa
BACKGROUND/AIMS: MiRNA-301a-3p is an oncogenic miRNA whose expression is associated with tumor development, metastases and overall poor prognosis. Estrogen receptor α (ERα) is one of the estrogen hormone-activated transcription factors, which regulates a large number of genes and is involved in the mammary gland development. Expression of ERα is considered to be a good indicator for endocrine therapy and breast cancer survival. Loss of ERα in breast cancer patients indicates invasiveness and poor prognosis...
2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29759193/highly-sensitive-detection-and-mutational-analysis-of-lung-cancer-circulating-tumor-cells-using-integrated-combined-immunomagnetic-beads-with-a-droplet-digital-pcr-chip
#16
Wanlei Gao, Ting Huang, Haojun Yuan, Jun Yang, Qinghui Jin, Chunping Jia, Guoxin Mao, Jianlong Zhao
Circulating tumor cells (CTCs) have become an important biomarker for liquid biopsy to monitor tumor progression and indicate response to therapies. Many epithelial cellular adhesion molecule (EpCAM) dependent CTC isolation methods have been developed, which have a limitation for low EpCAM expressed tumor cells. In an effort to overcome these drawbacks, we developed combined immunomagnetic beads (EpCAM, Mucin1 and epidermal growth factor receptor) to sensitively isolate CTCs for immunofluorescence analysis and genetic characterization...
August 1, 2018: Talanta
https://www.readbyqxmd.com/read/29752438/role-of-fgfr2b-expression-and-signaling-in-keratinocyte-differentiation-sequential-involvement-of-pkc%C3%AE-and-pkc%C3%AE
#17
Benedetta Rosato, Danilo Ranieri, Monica Nanni, Maria Rosaria Torrisi, Francesca Belleudi
The tumor suppressor epithelial isoform of the fibroblast growth factor receptor 2 (FGFR2b) induces human keratinocyte early differentiation. Moreover, protein kinases C (PKCs) are known to regulate the differentiation program in several cellular contexts, including keratinocytes. Therefore, in this paper we propose to clarify if FGFR2b could play a role also in the late steps of keratinocyte differentiation and to assess if this receptor-induced process would sequentially involve PKCδ and PKCα isoforms. Immunofluorescence, biochemical, and molecular approaches, performed on 2D cultures or 3D organotypic rafts of human keratinocytes overexpressing FGFR2b by stable transduction, showed that receptor signaling induced the precocious onset and an accelerated progression of keratinocyte differentiation, indicating that FGFR2b is a crucial regulator of the entire program of keratinocyte differentiation...
May 11, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29751820/physical-interaction-of-stat1-isoforms-with-tgf-%C3%AE-receptors-leads-to-functional-crosstalk-between-two-signaling-pathways-in-epithelial-ovarian-cancer
#18
Xiaoling Tian, Wencai Guan, Lingyun Zhang, Wenwen Sun, Daibing Zhou, Qunbo Lin, Weimin Ren, Lubna Nadeem, Guoxiong Xu
BACKGROUND: The signal transducer and activator of transcription (STAT) and transforming growth factor-β (TGF-β) signaling pathways play important roles in epithelial ovarian cancer (EOC). However, the mechanism of crosstalk between two pathways is not completely understood. METHODS: The expression of STAT1 protein was detected by tissue microarray and immunoblotting (IB). The interaction of STAT1 isoforms with TGF-β receptors was confirmed by immunoprecipitation and IB...
May 11, 2018: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29751150/lipid-mediator-leukotriene-d-4-induces-airway-epithelial-cells-proliferation-through-egfr-erk1-2-pathway
#19
Neeraj Dholia, Umesh C S Yadav
BACKGROUND: Cysteinyl leukotrienes (CysLTs), the potent lipid inflammatory mediators, are elevated in many pathological conditions and implicated in various inflammatory diseases including asthma, however their role in airway epithelial cells modulation is not clearly understood. We have investigated the effects of a CysLT, Leukotriene D4 (LTD4 ) on human airway epithelial cells, and assessed its role and mode of action in these cells. METHODOLOGY: Human small airway epithelial cells (SAECs) and A549 cells were incubated with different concentrations of LTD4 for different time intervals...
May 8, 2018: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/29750303/anticancer-effects-of-isofraxidin-against-a549-human-lung-cancer-cells-via-the-egfr-signaling-pathway
#20
Han Zhang, Qian-Qian Feng, Jian-Hua Gong, Jing-Ping Ma
Lung cancer is the leading cause of mortality due to tumor malignancy worldwide. In recent years, the treatment of lung cancer with chemotherapy has demonstrated notable resistance and insensitivity. Therefore, it is of great importance to investigate anti‑lung cancer drugs with high efficiency and low toxicity. In the present study, the effects of isofraxidin on lung cancer cells and the associated mechanisms were investigated. The results revealed that, in vivo and in vitro, isofraxidin exhibited marked inhibitory effects on the A549 lung cancer cell line...
May 3, 2018: Molecular Medicine Reports
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