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https://www.readbyqxmd.com/read/29776413/the-cxcr4-antagonist-plerixafor-amd3100-promotes-proliferation-of-ewing-sarcoma-cell-lines-in-vitro-and-activates-receptor-tyrosine-kinase-signaling
#1
Philipp Berning, Christiane Schaefer, Dagmar Clemens, Eberhard Korsching, Uta Dirksen, Jenny Potratz
BACKGROUND: The CXCR4 receptor antagonist plerixafor (AMD3100) is raising interest as an anti-cancer agent that disrupts the CXCL12-CXCR4 chemokine - receptor interaction between neoplastic cells and their microenvironment in tumor progression and metastasis. Here, we investigated plerixafor for anti-cancer activity in Ewing sarcoma, a rare and aggressive cancer of bone and soft tissues. METHODS: We used a variety of methods such as cell viability and migration assays, flow cytometry, phospho-tyrosine arrays and western blotting to determine plerixafor effects on five characterized Ewing sarcoma cell lines and a low-passage culture in vitro...
May 18, 2018: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/29749533/egf-upregulates-rfpl3-and-htert-via-the-mek-signaling-pathway-in-non%C3%A2-small-cell-lung-cancer-cells
#2
Chuan Lin, Yu Qin, Hua Zhang, Ming-Yang Gao, Yan-Fu Wang
Activation of the epidermal growth factor receptor (EGFR) during tumor development can trigger the MEK signaling pathway. In the present study, we investigated the MEK signaling pathway in non‑small cell lung cancer (NSCLC) cells with respect to the effect of epidermal growth factor (EGF) on expression of Ret finger protein like 3 (RFPL3) and human telomerase reverse transcriptase (hTERT), and the effect of RFPL3 overexpression on other MEK signaling proteins. In vitro, A549 and H1299 cells were treated with different concentrations of EGF for 24 h or 48 h...
May 8, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29743166/exploiting-insights-on-the-ret-receptor-for-personalized-cancer-medicine
#3
Lois M Mulligan
The focus of precision cancer medicine is the use of patient genetic signatures to predict disease occurrence and course and tailor approaches to individualized treatment to improve patient outcomes. The RET receptor tyrosine kinase represents a paradigm for the power of personalized cancer management to change cancer impact and improve quality of life. Oncogenic activation of RET occurs through several mechanisms including activating mutations and increased or aberrant expression. Activating RET mutations found in the inherited cancer syndrome multiple endocrine neoplasia 2 permit early diagnosis, predict disease course, and guide disease management to optimize patient survival...
May 9, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29695833/chronic-expression-of-wild-type-ret-receptor-in-the-mammary-gland-induces-luminal-tumors-that-are-sensitive-to-ret-inhibition
#4
Albana Gattelli, Martín E García Solá, Tim C Roloff, Robert D Cardiff, Edith C Kordon, Lewis A Chodosh, Nancy E Hynes
The receptor tyrosine kinase Ret, a key gain-of-function mutated oncoprotein in thyroid carcinomas, has recently been implicated in other cancer types. While Ret copy number gains and mutations have been reported at low frequencies in breast tumors, we and others have reported that Ret is overexpressed in about 40% of human tumors and this correlates with poor patient prognosis. Ret activation regulates numerous intracellular pathways related to proliferation and inflammation, but it is not known whether abnormal Ret expression is sufficient to induce mammary carcinomas...
April 26, 2018: Oncogene
https://www.readbyqxmd.com/read/29688429/ef24-a-curcumin-analog-and-zstk474-emphasizes-the-effect-of-cabozantinib-in-medullary-thyroid-cancer
#5
Loris Bertazza, Francesca Sensi, Elisabetta Cavedon, Sara Watutantrige-Fernando, Simona Censi, Jacopo Manso, Federica Vianello, Eric Casal Ide, Maurizio Iacobone, Raffaele Pezzani, Caterina Mian, Susi Barollo
XL184 is a small-molecule kinase inhibitor recently included in first-line systemic therapy for patients with advanced, progressive medullary thyroid cancer (MTC). EF24 is a curcumin analog with a high bio-availability, and ZSTK474 is an inhibitor of the PI3K signaling pathway. We investigated the effect of these compounds, alone and in combination, in two RET-mutated TT and MZ-CRC-1 MTC cell lines, and in six mostly RET wild-type human MTC primary cultures. Low IC50 values demonstrated the efficacy of the drugs, while the Combination Index revealed a significant synergistic effect of combinations of XL184+ZSTK474 and XL184+EF24...
April 23, 2018: Endocrinology
https://www.readbyqxmd.com/read/29662541/cabozantinib-in-the-treatment-of-advanced-renal-cell-carcinoma-in-adults-following-prior-vascular-endothelial-growth-factor-targeted-therapy-clinical-trial-evidence-and-experience
#6
REVIEW
Susanne Osanto, Tom van der Hulle
Cabozantinib is an oral multitargeted tyrosine kinase inhibitor (TKI) that potently inhibits MET and AXL, both associated with poor prognosis in renal cell carcinoma (RCC), next to vascular endothelial growth factor receptor 2, KIT, FLT3 and RET. Chronic treatment with vascular endothelial growth factor receptor (VEGFR)-targeting sunitinib upregulates MET and AXL in RCC, indicating that cabozantinib may be particularly effective in patients with advanced RCC whose disease progressed on prior VEGFR-targeted treatment...
March 2018: Therapeutic Advances in Urology
https://www.readbyqxmd.com/read/29657136/blu-667-targets-ret-altered-cancers
#7
(no author information available yet)
Findings from a phase I study indicate that the investigational RET inhibitor BLU-667 is safe and well tolerated, inducing good responses in patients with RET-altered medullary thyroid cancer or non-small cell lung cancer.
April 15, 2018: Cancer Discovery
https://www.readbyqxmd.com/read/29657135/precision-targeted-therapy-with-blu-667-for-ret-driven-cancers
#8
Vivek Subbiah, Justin F Gainor, Rami Rahal, Jason D Brubaker, Joseph L Kim, Michelle Maynard, Wei Hu, Qiongfang Cao, Michael P Sheets, Douglas Wilson, Kevin J Wilson, Lucian DiPietro, Paul Fleming, Michael Palmer, Mimi I Hu, Lori Wirth, Marcia S Brose, Sai-Hong Ignatius Ou, Matthew Taylor, Elena Garralda, Stephen Miller, Beni Wolf, Christoph Lengauer, Timothy Guzi, Erica K Evans
The receptor tyrosine kinase, rearranged during transfection (RET), is an oncogenic driver activated in multiple cancers including non-small cell lung cancer (NSCLC), medullary thyroid cancer (MTC) and papillary thyroid cancer (PTC). No approved therapies have been designed to target RET; treatment has been limited to multi-kinase inhibitors (MKIs) which can have significant off-target toxicities and limited efficacy. BLU-667 is a highly potent and selective RET inhibitor designed to overcome these limitations...
April 15, 2018: Cancer Discovery
https://www.readbyqxmd.com/read/29656442/treatment-emergent-hypertension-and-efficacy-in-the-phase-3-study-of-e7080-lenvatinib-in-differentiated-cancer-of-the-thyroid-select
#9
Lori J Wirth, Makoto Tahara, Bruce Robinson, Sanjeev Francis, Marcia S Brose, Mouhammed Amir Habra, Kate Newbold, Naomi Kiyota, Corina E Dutcus, Elton Mathias, Matthew Guo, Steven I Sherman, Martin Schlumberger
BACKGROUND: Hypertension (HTN) is an established class effect of vascular endothelial growth factor receptor (VEGFR) inhibition. In the phase 3 Study of (E7080) Lenvatinib in Differentiated Cancer of the Thyroid (SELECT) trial, HTN was the most frequent adverse event of lenvatinib, an inhibitor of VEGFR1, VEGFR2, VEGFR3, fibroblast growth factor receptor 1 (FGFR1), FGFR2, FGFR3, FGFR4, platelet-derived growth factor receptor α (PDGFRα), ret proto-oncogene (RET), and stem cell factor receptor (KIT)...
April 14, 2018: Cancer
https://www.readbyqxmd.com/read/29610391/application-of-genomics-to-identify-therapeutic-targets-in-recurrent-pediatric-papillary-thyroid-carcinoma
#10
Rebecca Ronsley, S Rod Rassekh, Yaoqing Shen, Anna F Lee, Colleen Jantzen, Jessica Halparin, Catherine Albert, Douglas S Hawkins, Shazhan Amed, Ralph Rothstein, Andrew J Mungall, David Dix, Geoffrey Blair, Helen Nadel, Steven J M Jones, Janessa Laskin, Marco A Marra, Rebecca J Deyell
Children with papillary thyroid carcinoma (PTC) may relapse despite response to radioactive iodine (RAI). Two children with multiply relapsed PTC underwent whole-genome and transcriptome sequencing. A TPM3-NTRK1 fusion was identified in one tumor, with outlier NTRK1 expression compared to the TCGA thyroid cancer compendium and to Illumina BodyMap normal thyroid. This patient demonstrated resolution of multiple pulmonary nodules without toxicity on oral TRK inhibitor therapy. A RET fusion was identified in the second tumor, another potentially actionable finding...
April 2018: Cold Spring Harbor Molecular Case Studies
https://www.readbyqxmd.com/read/29571998/identification-of-a-novel-kif13a-ret-fusion-in-lung-adenocarcinoma-by-next-generation-sequencing
#11
Xuefei Zhang, Yanlin Li, Changhong Liu, Weifeng Wang, Mo Li, Desheng Lv, Ge Sun, Hui Chen, Xiaowei Dong, Zhibo Miao, Ming Yao, Kai Wang, Hui Tian
RET fusions have been reported in 1-2% of lung adenocarcinomas, and represent an actionable target. Patients whose tumors possess RET fusion are associated with clinical benefit from the treatment with multi-kinase inhibitors such as cabozantinib and vandetanib. Further molecular screening for RET fusions is warranted. Novel KIF13A-RET fusion containing an intact RET kinase domain involving exons 1-18 of KIF13A and exons 12-20 of RET was identified in a lung cancer specimen from an 74-year-old Asian never smoker by next-generation sequencing (NGS) during clinical care...
April 2018: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/29563833/evolution-of-regorafenib-from-bench-to-bedside-in-colorectal-cancer-is-it-an-attractive-option-or-merely-a-me-too-drug
#12
REVIEW
Gaurav Goel
Colorectal cancer (CRC) is a major public health problem in the United States with an estimated 50,260 deaths in 2017. Over the past two decades, several agents have been approved by the US Food and Drug Administration (FDA) for the treatment of patients with metastatic CRC (mCRC). Regorafenib (BAY 73-4506) is a small-molecule multikinase inhibitor that was approved for the treatment of mCRC in 2012. This agent is a novel oral diphenylurea-based multikinase inhibitor that is active against several angiogenic receptor tyrosine kinases (RTKs; VEGFR-1, VEGFR-2, VEGFR-3, TIE-2), oncogenic RTKs (c-KIT, RET), stromal RTKs (PDGFR-B, FGFR-1), and intracellular signaling kinases (c-RAF/RAF-1, BRAF, BRAFV600E )...
2018: Cancer Management and Research
https://www.readbyqxmd.com/read/29549897/detection-of-ret-rearranged-during-transfection-variants-and-their-downstream-signal-molecules-in-ret-rearranged-lung-adenocarcinoma-patients
#13
Jeong-Oh Kim, Jung-Young Shin, Min Young Kim, Kyoung Hwa Son, Chan Kwon Jung, Tae-Jung Kim, Su Young Kim, Jae Kil Park, Sook Whan Sung, Sang Ju Bae, Hyun Jung Min, Jin-Hyoung Kang
BACKGROUND: We screened resected tumor tissues from patients with lung cancer for EGFR mutations, ALK rearrangements, and rearranged during transfection (RET) gene variants (including RET rearrangements and the Kinesin Family Member 5B (KIF5B)-RET fusion gene) using various methods including reverse transcription polymerase chain reaction (RT-PCR), transcript assays, fluorescence in situ hybridization (FISH), and immunohistochemistry (IHC). We also examined the protein expression of associated downstream signaling molecules to assess the effect of these variants on patient outcome...
March 2018: Surgical Oncology
https://www.readbyqxmd.com/read/29549836/challenging-clinically-unresponsive-medullary-thyroid-cancer-discovery-and-pharmacological-activity-of-novel-ret-inhibitors
#14
Valeria La Pietra, Stefania Sartini, Lorenzo Botta, Alessandro Antonelli, Silvia Martina Ferrari, Poupak Fallahi, Alessio Moriconi, Vito Coviello, Luca Quattrini, Yi-Yu Ke, Hsieh Hsing-Pang, Federico Da Settimo, Ettore Novellino, Concettina La Motta, Luciana Marinelli
It is now known that "gain of function" mutations of RET (REarranged during Transfection) kinase are specific and key oncogenic events in the onset of thyroid gland cancers such as the Medullary Thyroid Carcinoma (MTC). Although a number of RET inhibitors exist and are capable of inhibiting RET variants, in which mutations are outside the enzyme active site, the majority becomes dramatically ineffective when mutations are within the protein active site (V804L and V804M). Pursuing a receptor-based virtual screening against the kinase domain of RET, we found that compound 5 is able to inhibit efficiently both wild type and V804L mutant RET...
March 2, 2018: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29517106/vandetanib-has-antineoplastic-activity-in-anaplastic-thyroid-cancer-in-vitro-and-in-vivo
#15
Silvia Martina Ferrari, Guido Bocci, Teresa Di Desidero, Ilaria Ruffilli, Giusy Elia, Francesca Ragusa, Anna Fioravanti, Paola Orlandi, Sabrina Rosaria Paparo, Armando Patrizio, Simona Piaggi, Concettina La Motta, Salvatore Ulisse, Enke Baldini, Gabriele Materazzi, Paolo Miccoli, Alessandro Antonelli, Poupak Fallahi
The antitumor activity of vandetanib [a multiple signal transduction inhibitor including the RET tyrosine kinase, epidermal growth factor receptor (EGFR), vascular endothelial growth factor (VEGF) receptor (VEGFR), ERK and with antiangiogenic activity], in primary anaplastic thyroid cancer (ATC) cells, in the human cell line 8305C [undifferentiated thyroid cancer (TC)] and in an ATC‑cell line (AF), was investigated in the present study. Vandetanib (1 and 100 nM; 1, 10, 25 and 50 µM) was tested by WST‑1, apoptosis, migration and invasion assays: in primary ATC cells, in the 8305C continuous cell line, and in AF cells; and in 8305C cells in CD nu/nu mice...
May 2018: Oncology Reports
https://www.readbyqxmd.com/read/29517103/lenvatinib-exhibits-antineoplastic-activity-in-anaplastic-thyroid-cancer-in-vitro-and-in-vivo
#16
Silvia Martina Ferrari, Guido Bocci, Teresa Di Desidero, Giusy Elia, Ilaria Ruffilli, Francesca Ragusa, Paola Orlandi, Sabrina Rosaria Paparo, Armando Patrizio, Simona Piaggi, Concettina La Motta, Salvatore Ulisse, Enke Baldini, Gabriele Materazzi, Paolo Miccoli, Alessandro Antonelli, Poupak Fallahi
Lenvatinib is an oral, multitargeted tyrosine kinase inhibitor (TKI) of VEGFR1-VEGFR3, FGFR1-FGFR4, PDGFRα, RET and v-kit Hardy-Zuckerman 4 feline sarcoma viral oncogene homolog (KIT) signaling networks involved in tumor angiogenesis. We have evaluated the antitumor activity of lenvatinib in primary anaplastic thyroid cancer (ATC) cells, in the human cell line 8305C (undifferentiated thyroid cancer) and in an ATC-cell line (AF). The AF cell line was obtained from the primary ATC cultures and was the one that grew over 50 passages...
May 2018: Oncology Reports
https://www.readbyqxmd.com/read/29515414/a-case-of-squamous-cell-carcinoma-of-unknown-primary-that-responded-to-the-multi-tyrosine-kinase-inhibitor-lenvatinib
#17
Reiko Kimura-Tsuchiya, Eisaku Sasaki, Izumi Nakamura, Satoshi Suzuki, Satoshi Kawana, Chiyo Okouchi, Toshihiko Fukushima, Yuko Hashimoto, Shinichi Suzuki, Shigehira Saji
Lenvatinib is an oral tyrosine kinase inhibitor of vascular endothelial growth factor receptors 1, 2, and 3, fibroblast growth factor receptors 1 through 4, as well as platelet-derived growth factor receptor α, RET, and KIT. At present, lenvatinib is used in the treatment of thyroid cancer and renal cell carcinoma. We herein report a case of a 67-year-old patient with squamous cell carcinoma of unknown primary who was effectively treated with lenvatinib. The patient was initially diagnosed as having undifferentiated thyroid cancer, and after total thyroidectomy and bilateral lymph node dissection, lenvatinib was administered for the treatment of residual lymph node metastasis...
January 2018: Case Reports in Oncology
https://www.readbyqxmd.com/read/29507487/standardizing-biomarker-testing-for-canadian-patients-with-advanced-lung-cancer
#18
B Melosky, N Blais, P Cheema, C Couture, R Juergens, S Kamel-Reid, M-S Tsao, P Wheatley-Price, Z Xu, D N Ionescu
Background: The development and approval of both targeted and immune therapies for patients with advanced non-small cell lung cancer (nsclc) has significantly improved patient survival rates and quality of life. Biomarker testing for patients newly diagnosed with nsclc, as well as for patients progressing after treatment with epidermal growth factor receptor ( EGFR ) inhibitors, is the standard of care in Canada and many parts of the world. Methods: A group of thoracic oncology experts in the field of thoracic oncology met to describe the standard for biomarker testing for lung cancer in the Canadian context, focusing on evidence-based recommendations for standard-of-care testing for EGFR , anaplastic lymphoma kinase ( ALK ), ROS1 , BRAF V600 and programmed death-ligand (PD-L1) at the time of diagnosis of advanced disease and EGFR T790M upon progression...
February 2018: Current Oncology
https://www.readbyqxmd.com/read/29468981/lenvatinib-in-the-therapy-of-aggressive-thyroid-cancer-state-of-the-art-and-new-perspectives-with-patents-recently-applied
#19
Silvia Martina Ferrari, Ilaria Ruffilli, Marco Centanni, Camilla Virili, Gabriele Materazzi, Magdalini Alexopoulou, Mario Miccoli, Alessandro Antonelli, Poupak Fallahi
BACKGROUND AND OBJECTIVE: Lenvatinib is an oral, multitargeted tyrosine kinase inhibitor (TKI) of vascular endothelial growth factor receptors (VEGFR1-VEGFR3), fibroblast growth factor receptors (FGFR1-FGFR4), platelet-derived growth factor receptor (PDGFR)α, rearranged during transfection (RET), and v-kit (KIT) signaling networks implicated in tumor angiogenesis. METHOD: Here we review the scientific literature about lenvatinib in the treatment of thyroid cancer...
February 19, 2018: Recent Patents on Anti-cancer Drug Discovery
https://www.readbyqxmd.com/read/29466002/development-of-potent-inhibitors-of-receptor-tyrosine-kinases-by-ligand-based-drug-design-and-target-biased-phenotypic-screening
#20
Samuel H Myers, Carolin Temps, Douglas R Houston, Valerie G Brunton, Asier Unciti-Broceta
Pyrazolopyrimidines with potent antiproliferative properties were developed by an adaptive strategy that applies ligand-based design and phenotypic screening iteratively and is informed by biochemical assays. To drive development toward specific oncopathways, compounds were tested against cancer cells that overexpress, or not, AXL kinase. Identified phenotypic hits were found to inhibit oncotargets AXL, RET, and FLT3. Subsequent optimization generated antiproliferative lead compounds with unique selectivity profiles, including selective AXL inhibitors and a highly potent inhibitor of FLT3...
March 8, 2018: Journal of Medicinal Chemistry
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