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https://www.readbyqxmd.com/read/28315172/a-novel-non-atp-competitive-fgfr1-inhibitor-with-therapeutic-potential-on-gastric-cancer-through-inhibition-of-cell-proliferation-survival-and-migration
#1
Jianzhang Wu, Xiaojing Du, Wulan Li, Yangyang Zhou, Encheng Bai, Yanting Kang, Qiuxiang Chen, Weitao Fu, Di Yun, Qing Xu, Peihong Qiu, Rong Jin, Yuepiao Cai, Guang Liang
Fibroblast growth factor receptor 1 (FGFR1), belonging to receptor tyrosine kinases (RTKs), possesses various biological functions. Over-expression of FGFR1 has been observed in multiple human malignancies. Hence, targeting FGFR1 is an attractive prospect for the advancement of cancer treatment options. Here, we present a novel small molecular FGFR1 inhibitor L16H50, which can inhibit FGFR1 kinase in an ATP-independent manner. It potently inhibits FGFR1-mediated signaling in a gastric cancer cell line, resulting in inhibition of cell growth, survival and migration...
March 17, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28270751/understanding-the-role-of-gpcr-heteroreceptor-complexes-in-modulating-the-brain-networks-in-health-and-disease
#2
REVIEW
Dasiel O Borroto-Escuela, Jens Carlsson, Patricia Ambrogini, Manuel Narváez, Karolina Wydra, Alexander O Tarakanov, Xiang Li, Carmelo Millón, Luca Ferraro, Riccardo Cuppini, Sergio Tanganelli, Fang Liu, Malgorzata Filip, Zaida Diaz-Cabiale, Kjell Fuxe
The introduction of allosteric receptor-receptor interactions in G protein-coupled receptor (GPCR) heteroreceptor complexes of the central nervous system (CNS) gave a new dimension to brain integration and neuropsychopharmacology. The molecular basis of learning and memory was proposed to be based on the reorganization of the homo- and heteroreceptor complexes in the postjunctional membrane of synapses. Long-term memory may be created by the transformation of parts of the heteroreceptor complexes into unique transcription factors which can lead to the formation of specific adapter proteins...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28255231/insight-into-resistance-mechanisms-of-azd4547-and-e3810-to-fgfr1-gatekeeper-mutation-via-theoretical-study
#3
Donglou Liang, Qiaowan Chen, Yujin Guo, Ting Zhang, Wentao Guo
Inhibitors targeting the amplification of the fibroblast growth factor receptor 1 (FGFR1) have found success in the treatment of FGFR1-positive squamous cell lung and breast cancers. A secondary mutation of gatekeeper residue (V561M) in the binding site has been linked to the acquired resistance. Recently, two well-known small molecule inhibitors of FGFR1, AZD4547 and E3810, reported that the V561M mutation confers significant resistance to E3810, while retaining affinity for AZD4547. FGFR1 is widely investigated as potential therapeutic target, while there are few computational studies made to understand the resistance mechanisms about FGFR1 V561M gatekeeper mutation...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28255027/akt-activation-mediates-acquired-resistance-to-fibroblast-growth-factor-receptor-inhibitor-bgj398
#4
Jharna Datta, Senthilkumar Damodaran, Hannah Parks, Cristina Ocrainiciuc, Jharna Miya, Lianbo Yu, Elijah P Gardner, Eric Samorodnitsky, Michele R Wing, Darshna Bhatt, John Hays, Julie W Reeser, Sameek Roychowdhury
Activation of FGFR signaling through mutations, amplifications, or fusions involving FGFR1, 2, 3, or 4 is seen in multiple tumors, including lung, bladder, and cholangiocarcinoma. Currently, several clinical trials are evaluating the role of novel FGFR inhibitors in solid tumors. As we move forward with FGFR inhibitors clinically, we anticipate the emergence of resistance with treatment. Consequently, we sought to study the mechanism(s) of acquired resistance to FGFR inhibitors using annotated cancer cell lines...
March 2, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28251550/the-mystery-of-puberty-initiation-genetics-and-epigenetics-of-idiopathic-central-precocious-puberty-icpp
#5
REVIEW
Sofia Leka-Emiri, George P Chrousos, Christina Kanaka-Gantenbein
Puberty is a major developmental stage. Damaging mutations, considered as "mistakes of nature", have contributed to the unraveling of the networks implicated in the normal initiation of puberty. Genes involved in the abnormal hypothalamic-pituitary-gonadal (HPG) axis development, in the normosmic idiopathic hypogonadotropic hypogonadism (nIHH), in the X-linked or autosomal forms of Kallmann syndrome and in precocious puberty have been identified (GNRH1, GNRHR, KISS1, GPR54, FGFR1, FGF8, PROK2, PROKR2, TAC3, TACR3, KAL1, PROK2, PROKR2, CHD7, LEP, LEPR, PC1, DAX1, SF-1, HESX-1, LHX3, PROP-1)...
March 1, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28242791/response-to-tyrosine-kinase-inhibitors-in-myeloproliferative-neoplasia-with-8p11-translocation-and-cep110-fgfr1-rearrangement
#6
Marc Wehrli, Elisabeth Oppliger Leibundgut, Heinrich H Gattiker, Markus G Manz, Antonia M S Müller, Jeroen S Goede
This brief communication reports on a patient with an exceedingly rare "8p11 (eight-p-eleven) myeloproliferative syndrome" (EMS) with CEP110-FGFR1 rearrangement who responded to treatment with the multi-tyrosine kinase inhibitor (TKI) dasatinib. Dasatinib improved quality of life substantially by increasing blood counts and reducing the need for transfusions. This report demonstrates that the second-generation TKI may provide a therapeutic option for elderly and frail EMS patients who cannot be offered aggressive therapy, including allogeneic hematopoietic cell transplantation...
February 27, 2017: Oncologist
https://www.readbyqxmd.com/read/28240520/roles-of-signal-transducer-pathways-in-investigation-of-biopsies-from-patients-with-bladder-tumors
#7
Aysegul Bayrak, Sukru Palanduz, Ender Coskunpinar, Oner Sanli, Abdullah Armagan, Serkan Karakus, Ramazan Topaktas, Kivanc Cefle, Sukru Ozturk, Ali Ucur
Background:The process of development of bladder cancer features alteration of normal biological conditions caused by changes in molecular pathways. Removing control over regulation of these pathways could lead to changes in signal transduction and abnormal regulation of genes. During tumor formation and progression, genes regulate critical cellular processes, involved in cell cycling, growth and death. Here we evaluated the expression and prognostic importance of FGFR1, HRAS, CCND1, CCND3, STAT3 and FAS genes...
January 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28209183/variants-in-congenital-hypogonadotrophic-hypogonadism-genes-identified-in-an-indonesian-cohort-of-46-xy-under-virilised-boys
#8
Katie L Ayers, Aurore Bouty, Gorjana Robevska, Jocelyn A van den Bergen, Achmad Zulfa Juniarto, Nurin Aisyiyah Listyasari, Andrew H Sinclair, Sultana M H Faradz
BACKGROUND: Congenital hypogonadotrophic hypogonadism (CHH) and Kallmann syndrome (KS) are caused by disruption to the hypothalamic-pituitary-gonadal (H-P-G) axis. In particular, reduced production, secretion or action of gonadotrophin-releasing hormone (GnRH) is often responsible. Various genes, many of which play a role in the development and function of the GnRH neurons, have been implicated in these disorders. Clinically, CHH and KS are heterogeneous; however, in 46,XY patients, they can be characterised by under-virilisation phenotypes such as cryptorchidism and micropenis or delayed puberty...
February 16, 2017: Human Genomics
https://www.readbyqxmd.com/read/28197342/the-function-of-fgfr1-signalling-in-the-spinal-cord-therapeutic-approaches-using-fgfr1-ligands-after-spinal-cord-injury
#9
REVIEW
Barbara Haenzi, Lawrence D F Moon
Extensive research is ongoing that concentrates on finding therapies to enhance CNS regeneration after spinal cord injury (SCI) and to cure paralysis. This review sheds light on the role of the FGFR pathway in the injured spinal cord and discusses various therapies that use FGFR activating ligands to promote regeneration after SCI. We discuss studies that use peripheral nerve grafts or Schwann cell grafts in combination with FGF1 or FGF2 supplementation. Most of these studies show evidence that these therapies successfully enhance axon regeneration into the graft...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28195315/genetic-testing-facilitates-prepubertal-diagnosis-of-congenital-hypogonadotropic-hypogonadism
#10
Cheng Xu, Mariarosaria Lang-Muritano, Franziska Phan-Hug, Andrew A Dwyer, Gerasimos P Sykiotis, Daniele Cassatella, James Acierno, Moosa Mohammadi, Nelly Pitteloud
Neonatal micropenis and cryptorchidism raise the suspicion of congenital hypogonadotropic hypogonadism (CHH), a rare genetic disorder caused by GnRH deficiency. Low plasma testosterone levels and low gonadotropins during minipuberty provide a clinical diagnostic clue, yet these tests are seldomly performed in general practice. We report a male neonate with no family history of reproductive disorders who was born with micropenis and cryptorchidism. Hormonal testing at age 2.5 months showed low testosterone (0...
February 14, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28193689/signaling-by-fgf-receptor-2-not-fgf-receptor-1-regulates-myelin-thickness-through-activation-of-erk1-2-mapk-which-promotes-mtorc1-activity-in-an-akt-independent-manner
#11
Miki Furusho, Akihiro Ishii, Rashmi Bansal
FGF signaling has emerged as a significant "late-stage" regulator of myelin thickness in the CNS, independent of oligodendrocyte differentiation. Therefore, it is critically important to identify the specific FGF receptor type and its downstream signaling molecules in oligodendrocytes to obtain better insights into the regulatory mechanisms of myelin growth. Here, we show that FGF receptor type 2 (FGFR2) is highly enriched at the paranodal loops of myelin. Conditional ablation of this receptor-type, but not FGF receptor type 1 (FGFR1), resulted in attenuation of myelin growth, expression of major myelin genes, key transcription factor Myrf and extracellular signal-regulated protein kinase 1 and 2 (ERK1/2) activity...
March 15, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28185819/expression-of-polysialic-acid-in-primary-laryngeal-squamous-cell-carcinoma
#12
Marko Klobučar, Sarah Visentin, Antonija Jakovčević, Mario Bilić, Lana Kovač-Bilić, Davorin Đanić, Krešimir Pavelić, Sandra Kraljević Pavelić
AIMS: Expression of polySia is associated with metastatic dissemination and progression of various malignant diseases. In particular, it may contribute to tumorigenesis by a negative modulatory effect on cellular signaling cascades responsible for cellular migration, differentiation and proliferation. In this study, we investigated the expression of polySia in primary metastatic and non-metastatic laryngeal squamous cell carcinoma (LSCC) tumor tissues and its potential impact on the LSCC progression...
March 15, 2017: Life Sciences
https://www.readbyqxmd.com/read/28183331/phase-ii-randomized-placebo-controlled-study-of-dovitinib-in-combination-with-fulvestrant-in-postmenopausal-patients-with-hr-her2-breast-cancer-that-had-progressed-during-or-after-prior-endocrine-therapy
#13
Antonino Musolino, Mario Campone, Patrick Neven, Neelima Denduluri, Carlos H Barrios, Javier Cortes, Kimberly Blackwell, Hatem Soliman, Zsuzsanna Kahan, Hervé Bonnefoi, Matthew Squires, Yong Zhang, Stephanie Deudon, Michael M Shi, Fabrice André
BACKGROUND: Overexpression of fibroblast growth factor receptor 1 (FGFR1), found in ≤8% of hormone receptor-positive (HR(+)), human epidermal growth factor receptor 2-negative (HER2(-)) breast cancer cases, is correlated with decreased overall survival and resistance to endocrine therapy (ET). Dovitinib, a potent FGFR inhibitor, has demonstrated antitumor activity in heavily pretreated patients with FGFR pathway-amplified breast cancer. METHODS: In this randomized, placebo-controlled phase II trial, we evaluated whether the addition of dovitinib to fulvestrant would improve outcomes in postmenopausal patients with HR(+), HER2(-) advanced breast cancer that had progressed during or after prior ET...
February 10, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28178124/anaplastic-thyroid-carcinoma-and-foscarnet-use-in-a-multitarget-treatment-documented-by-18f-fdg-pet-ct-a-case-report
#14
Elisa Giannetta, Andrea M Isidori, Cosimo Durante, Cira Di Gioia, Flavia Longo, Vincenzo Tombolini, Nadia Bulzonetti, Chiara Graziadio, Riccardo Pofi, Daniele Gianfrilli, Antonella Verrienti, Raffaella Carletti, Sebastiano Filetti, Andrea Lenzi, Alberto Baroli
RATIONALE: The case reported the rapid remission of disease recurrence achieved adding foscarnet, a DNA polymerase inhibitor that interacts with fibroblast growth factor 2, to low molecular weight heparin and sunitinib for the first time in a patient with an anaplastic thyroid cancer (ATC). PATIENT CONCERNS: A 65-year-old woman with a multinodular goiter referred for a rapid enlargement of a nodule. Histological examination revealed an ATC with a little area of papillary thyroid cancer (PTC)...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28177947/association-of-li-fraumeni-syndrome-with-small-cell-carcinoma-of-the-ovary-hypercalcemic-type-and-concurrent-pleomorphic-liposarcoma-of-the-cervix
#15
Bevan Tandon, Ian S Hagemann, Horacio M Maluf, John D Pfeifer, Hussam Al-Kateb
Small cell carcinoma of the ovary, hypercalcemic type (SCCOHT), is a rare, highly lethal malignancy predominantly affecting young adult females. We report a patient with widely metastatic SCCOHT and concurrent uterine cervical pleomorphic liposarcoma. Clinical targeted next-generation sequencing was performed on both neoplasms and demonstrated hemizygous stop-gain TP53 mutations (p.R196*), and wild-type SMARCA4 in both tumors. Microarray analyses of both tumors revealed similar but not identical widespread loss of heterozygosity over most chromosomes associated with loss of chromosomal copy number in the SCCOHT and pleomorphic liposarcoma tumors, amplification of FGFR1 in both tumors, and amplification of MYC in the SCCOHT...
February 7, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28162885/genetic-and-familial-predisposition-to-rotator-cuff-disease-a-systematic-review
#16
REVIEW
Dominique I Dabija, Chan Gao, Todd L Edwards, John E Kuhn, Nitin B Jain
BACKGROUND: Rotator cuff disease is a common disorder leading to shoulder pain and loss of function. Its etiology in atraumatic cases is uncertain and is likely to extend beyond repetitive microtrauma or overuse. Our objective was to determine whether there is a genetic or familial predisposition to rotator cuff disease. METHODS: A literature search of PubMed and Embase databases identified 251 citations. After review of the titles, abstracts, and full articles, 7 met our inclusion and exclusion criteria...
February 2, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28161459/peptide-microarray-based-characterization-of-antibody-responses-to-host-proteins-after-bacille-calmette-gu%C3%A3-rin-vaccination
#17
REVIEW
Davide Valentini, Martin Rao, Lalit Rane, Sayma Rahman, Rebecca Axelsson-Robertson, Rainer Heuchel, Matthias Löhr, Daniel Hoft, Susanna Brighenti, Alimuddin Zumla, Markus Maeurer
BACKGROUND: Bacille Calmette-Guérin (BCG) is the world's most widely distributed vaccine, used against tuberculosis (TB), in cancer immunotherapy, and in autoimmune diseases due to its immunomodulatory properties. To date, the effect of BCG vaccination on antibody responses to host proteins has not been reported. High-content peptide microarrays (HCPM) offer a unique opportunity to gauge specific humoral immune responses. METHODS: The sera of BCG-vaccinated healthy adults were tested on a human HCPM platform (4953 randomly selected epitopes of human proteins) to detect specific immunoglobulin gamma (IgG) responses...
February 2, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28149899/uncovering-the-influence-of-the-fgfr1-pathway-on-glioblastoma-radiosensitivity
#18
COMMENT
Karen K Sayal, Geoffrey S Higgins, Ester M Hammond
No abstract text is available yet for this article.
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28146284/fgfr1-associated-myeloid-neoplasm-with-increased-mast-cells
#19
Christine G Roth, Mounzer Agha
No abstract text is available yet for this article.
February 1, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28138694/activity-of-fibroblast-growth-factor-receptor-inhibitors-tki258-ponatinib-and-azd4547-against-tpr%C3%A2-fgfr1-fusion
#20
Xu-Hua Qiu, Feng Li, Hong-Qin Cao, Jing-Jing Shao, Jian-Gang Mei, Han-Qing Li, Yong-Ping Zhai
8p11 myeloproliferative syndrome (EMS) is a rare disease characterized by the constitutive activation of fibroblast growth factor receptor 1 (FGFR1). To date, four cases of EMS with the chromosomal translocation, t(1;8)(q25;p11.2), have been reported. In the present study, TPR‑FGFR1‑expressing Baf3 cells were established and confirmed by polymerase chain reaction. To identify the most promising drug for EMS, the activities and associated mechanism of three tyrosine kinase inhibitors (TKIs), TKI258, ponatinib and AZD4547, against TPR‑FGFR1 were tested by MTT assay, flow cytometry and western blot...
January 24, 2017: Molecular Medicine Reports
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