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https://www.readbyqxmd.com/read/28337541/tyrosine-kinase-inhibitor-therapy-induced-changes-in-humoral-immunity-in-patients-with-chronic-myeloid-leukemia
#1
Hanna L M Rajala, Mohamed El Missiry, Anniina Ruusila, Perttu Koskenvesa, Tim H Brümmendorf, Bjorn T Gjertsen, Jeroen Janssen, Kourosh Lotfi, Berit Markevärn, Ulla Olsson-Strömberg, Leif Stenke, Jesper Stentoft, Johan Richter, Henrik Hjorth-Hansen, Anna Kreutzman, Satu Mustjoki
PURPOSE: Tyrosine kinase inhibitors (TKIs) have well-characterized immunomodulatory effects on T and NK cells, but the effects on the humoral immunity are less well known. In this project, we studied TKI-induced changes in B cell-mediated immunity. METHODS: We collected peripheral blood (PB) and bone marrow (BM) samples from chronic myeloid leukemia (CML) patients before and during first-line imatinib (n = 20), dasatinib (n = 16), nilotinib (n = 8), and bosutinib (n = 12) treatment...
March 23, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28316033/cardiovascular-complications-of-targeted-therapies-for-chronic-myeloid-leukemia
#2
REVIEW
Rongras Damrongwatanasuk, Michael G Fradley
The development of tyrosine kinase inhibitors (TKIs) dramatically changed the treatment landscape for many different cancers including chronic myeloid leukemia (CML). With the introduction of imatinib, the first TKI developed and approved to effectively treat CML, patient survival has increased dramatically and, in some cases, this fatal cancer can be managed as a chronic disease. Since the approval of imatinib in 2002, four additional TKIs have been developed to treat this disease including the second-generation TKIs nilotinib, dasatinib, and bosutinib and the third-generation TKI ponatinib...
April 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28272433/novel-members-of-quinoline-compound-family-enhance-insulin-secretion-in-rin-5ah-beta-cells-and-in-rat-pancreatic-islet-microtissue
#3
Z Orfi, F Waczek, F Baska, I Szabadkai, R Torka, J Hartmann, L Orfi, A Ullrich
According to clinical data, some tyrosine kinase inhibitors (TKIs) possess antidiabetic effects. Several proposed mechanisms were assigned to them, however their mode of action is not clear. Our hypothesis was that they directly stimulate insulin release in beta cells. In our screening approach we demonstrated that some commercially available TKIs and many novel synthesized analogues were able to induce insulin secretion in RIN-5AH beta cells. Our aim was to find efficient, more selective and less toxic compounds...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28241101/does-the-frequency-of-molecular-monitoring-after-tyrosine-kinase-inhibitor-discontinuation-affect-outcomes-of-patients-with-chronic-myeloid-leukemia
#4
Jee Hyun Kong, Elliott F Winton, Leonard T Heffner, Zhengjia Chen, Amelia A Langston, Brittany Hill, Martha Arellano, Fuad El-Rassi, Audrey Kim, Anand Jillella, Vamsi K Kota, Imre Bodó, Hanna Jean Khoury
BACKGROUND: To the authors' knowledge, the optimal frequency of monitoring after tyrosine kinase inhibitor (TKI) discontinuation in patients with chronic myeloid leukemia (CML) has not been established. Data regarding the discontinuation of second-generation TKIs used in first-line treatment or after the failure of first-line treatment with TKIs are limited. Herein, the authors report real-world experience with "reduced frequency" molecular monitoring in patients with CML in all phases who discontinued treatment with imatinib, dasatinib, or bosutinib...
February 27, 2017: Cancer
https://www.readbyqxmd.com/read/28223426/resistance-mechanism-against-trastuzumab-in-her2-positive-cancer-cells-and-its-negation-by-src-inhibition
#5
Mei Hua Jin, Ah-Rong Nam, Ji Eun Park, Ju-Hee Bang, Yung-Jue Bang, Do-Youn Oh
Trastuzumab in combination with chemotherapy is the standard of care for patients with human epidermal growth factor receptor 2 (HER2)-positive breast and gastric cancers. Several resistance mechanisms against anti-HER2 therapy have been proposed. Src activation has been suggested to be responsible for the resistance of HER2-positive breast cancer. In our study, we generated four trastuzumab-resistant (HR) cancer cell lines from HER2-amplified gastric and biliary tract cancer cell lines (SNU-216, NCI-N87, SNU-2670, and SNU-2773)...
February 21, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28198666/design-connecting-gene-expression-with-therapeutics-for-drug-repurposing-and-development
#6
Bernard Kok Bang Lee, Kai Hung Tiong, Jit Kang Chang, Chee Sun Liew, Zainal Ariff Abdul Rahman, Aik Choon Tan, Tsung Fei Khang, Sok Ching Cheong
BACKGROUND: The drug discovery and development pipeline is a long and arduous process that inevitably hampers rapid drug development. Therefore, strategies to improve the efficiency of drug development are urgently needed to enable effective drugs to enter the clinic. Precision medicine has demonstrated that genetic features of cancer cells can be used for predicting drug response, and emerging evidence suggest that gene-drug connections could be predicted more accurately by exploring the cumulative effects of many genes simultaneously...
January 25, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28167538/application-of-physiologically-based-pharmacokinetic-modeling-to-the-understanding-of-bosutinib-pharmacokinetics-prediction-of-drug-drug-and-drug-disease-interactions
#7
Chiho Ono, Poe-Hirr Hsyu, Richat Abbas, Cho-Ming Loi, Shinji Yamazaki
Bosutinib is an orally available Src/Abl tyrosine kinase inhibitor indicated for the treatment of patients with Philadelphia chromosome-positive chronic myelogenous leukemia. Bosutinib is predominantly metabolized by CYP3A4 as the primary clearance mechanism. The main objectives of this study were to 1) develop physiologically based pharmacokinetic (PBPK) models of bosutinib; 2) verify and refine the PBPK models based on clinical study results of bosutinib single-dose drug-drug interaction (DDI) with ketoconazole and rifampin, as well as single-dose drug-disease interaction (DDZI) in patients with renal and hepatic impairment; 3) apply the PBPK models to predict DDI outcomes in patients with weak and moderate CYP3A inhibitors; and 4) apply the PBPK models to predict DDZI outcomes in renally and hepatically impaired patients after multiple-dose administration...
April 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28135648/current-approach-to-the-treatment-of-chronic-myeloid-leukaemia
#8
REVIEW
Ivan Pasic, Jeffrey H Lipton
Of all the cancers, chronic myeloid leukaemia (CML) has witnessed the most rapid evolution of the therapeutic milieu in recent decades. The introduction of tyrosine kinase inhibitors (TKIs) as a therapeutic option has profoundly changed patient experience and outcome. The availability of multiple new highly effective therapies has increasingly underscored the importance of a good understanding of the underlying pathophysiological basis in CML, as well as patient-specific factors in choosing the right treatment for every individual...
April 2017: Leukemia Research
https://www.readbyqxmd.com/read/28102731/microfluidic-whole-blood-testing-of-platelet-response-to-pharmacological-agents
#9
Ruizhi Li, Tilo Grosser, Scott L Diamond
Platelets present a number of intracellular and transmembrane targets subject to pharmacological modulation, either for cardiovascular disease reduction or as an unintended drug response. Microfluidic devices allow human blood to clot on a defined surface under controlled hemodynamic and pharmacological conditions. The potencies of a number of antiplatelet and anticancer drugs have been tested with respect to platelet deposition on collagen under flow. Inhibitors of cyclooxygenase-1 (COX-1) reduce platelet deposition, either when added ex vivo to blood or ingested orally by patients prior to testing...
January 19, 2017: Platelets
https://www.readbyqxmd.com/read/28098949/identification-of-cellular-targets-involved-in-cardiac-failure-caused-by-pki-in-oncology-an-approach-combining-pharmacovigilance-and-pharmacodynamics
#10
Emilie Patras de Campaigno, Emmanuelle Bondon-Guitton, Guy Laurent, Francois Montastruc, Jean-Louis Montastruc, Maryse Lapeyre-Mestre, Fabien Despas
AIMS: The aims of the present study were to evaluate the risk of cardiac failure (CF) associated with 15 anticancer protein kinase inhibitors (PKIs) through a case/noncase analysis and to identify which PK(s) and pathways are involved in PKI-induced CF. METHODS: In order to evaluate the risk of CF, adjusted reporting odds ratios (aRORs) were calculated for the 15 anticancer PKIs in the World Health Organization safety report database (VigiBase®). We realised a literature review to identify 21 protein kinases (PKs) that were possibly involved in CF caused by PKIs...
January 18, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28090366/bosutinib-therapy-in-patients-with-chronic-myeloid-leukemia-practical-considerations-for-management-of-side-effects
#11
REVIEW
Patricia S Ault, John Rose PharmD, Lisa A Nodzon PhD, Elizabeth S Kaled
The past decade has witnessed great advances in the treatment of chronic myeloid leukemia (CML), brought about in large part by the development of BCR-ABL tyrosine kinase inhibitors (TKIs). Bosutinib joins the armamentarium of approved TKIs for the treatment of chronic phase (CP), accelerated phase (AP), and blast phase (BP) Philadelphia chromosome (Ph)-positive CML resistant to or intolerant of prior therapy. Bosutinib has an adverse-event (AE) profile distinct from that of other TKIs. Diarrhea is the predominant toxicity associated with bosutinib treatment; other commonly reported nonhematologic AEs include rash and liver enzyme elevations...
March 2016: Journal of the Advanced Practitioner in Oncology
https://www.readbyqxmd.com/read/28044939/inhibition-of-tgf-%C3%AE-signaling-in-tumor-cells-by-small-molecule-src-family-kinase-inhibitors
#12
Tobias Bartscht, Benjamin Rosien, Dirk Rades, Roland Kaufmann, Harald Biersack, Hendrik Lehnerta, Hendrik Ungefroren
In a series of studies carried out over the last couple of years in various cell types, it was observed that the experimentally used Src family kinase inhibitors PP1 and PP2 and the clinically used Src/Abl inhibitors AZM475271 and dasatinib are potent inhibitors of TGF-β mediated cellular responses such as Smad and p38 mitogen-activated protein kinase phosphorylation, Smad-dependent transcriptional activation, growth inhibition, epithelial-mesenchymal transition (EMT), and cell motility. While for PP1/PP2 it was demonstrated shown that these agents directly inhibit the kinase activity of the TGF-β type I receptor activin receptor-like kinase 5, the mechanism of the anti-TGF-β effect of AZM475271 and dasatinib is less clear...
January 2, 2017: Anti-cancer Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/27971669/matching-adjusted-indirect-comparison-maic-analysis-for-ponatinib-vs-bosutinib-in-third-line-chronic-phase-chronic-myeloid-leukemia-cp-cml
#13
S Iannazzo, L McGarry, S Lustgarten, S Chiroli
No abstract text is available yet for this article.
November 2016: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/27913183/nmr-strategies-to-support-medicinal-chemistry-workflows-for-primary-structure-determination
#14
Paul Oguadinma, Francois Bilodeau, Steven R LaPlante
Central to drug discovery is the correct characterization of the primary structures of compounds. In general, medicinal chemists make great synthetic and characterization efforts to deliver the intended compounds. However, there are occasions which incorrect compounds are presented, such as those reported for Bosutinib and TIC10. This may be due to a variety of reasons such as uncontrolled reaction schemes, reliance on limited characterization techniques (LC-MS and/or 1D 1H NMR spectra), or even the lack of availability or knowledge of characterization strategies...
January 15, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27903968/novel-src-abl-tyrosine-kinase-inhibitor-bosutinib-suppresses-neuroblastoma-growth-via-inhibiting-src-abl-signaling
#15
Shayahati Bieerkehazhi, Zhenghu Chen, Yanling Zhao, Yang Yu, Huiyuan Zhang, Sanjeev A Vasudevan, Sarah E Woodfield, Ling Tao, Joanna S Yi, Jodi A Muscal, Jonathan C Pang, Shan Guan, Hong Zhang, Jed G Nuchtern, Hui Li, Huiwu Li, Jianhua Yang
Neuroblastoma (NB) is the most common extracranial solid tumor in children. Aberrant activation of the non-receptor tyrosine kinases Src and c-Abl contributes to the progression of NB. Thus, targeting these kinases could be a promising strategy for NB therapy. In this paper, we report that the potent dual Src/Abl inhibitor bosutinib exerts anti-tumor effects on NB. Bosutinib inhibited NB cell proliferation in a dose-dependent manner and suppressed colony formation ability of NB cells. Mechanistically, bosutinib effectively decreased the activity of Src/Abl and PI3K/AKT/mTOR, MAPK/ERK, and JAK/STAT3 signaling pathways...
January 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/27901368/second-line-small-molecule-therapy-options-for-treating-chronic-myeloid-leukemia
#16
REVIEW
Matteo Molica, Fulvio Massaro, Massimo Breccia
Approximately 33% of chronic myeloid leukemia (CML) patients discontinue treatment with imatinib in the long-term due to resistance and/or intolerance. Second-generation tyrosine kinase inhibitors (TKIs) (dasatinib, nilotinib, bosutinib) and third-generation (ponatinib) have added complexity to the treatment paradigm for this disease. Areas covered: Second generation TKIs, approved as second-line treatment in all phases of the disease, are highly effective in patients resistant to and/or intolerant to imatinib and are extremely active against all the resistant BCR-ABL1 mutations, with the exception of T3151...
January 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/27861317/development-and-validation-of-a-simultaneous-quantification-method-of-fourteen-tyrosine-kinase-inhibitors-in-human-plasma-using-lc-ms-ms
#17
Huu-Hien Huynh, Claire Pressiat, Hélène Sauvageon, Isabelle Madelaine, Patricia Maslanka, Céleste Lebbé, Catherine Thieblemont, Lauriane Goldwirt, Samia Mourah
BACKGROUND: A sensitive LC-MS/MS method for the analysis in a small volume of plasma of 14 tyrosine kinase inhibitors (TKIs) currently used (imatinib, dasatinib, ibrutinib, ponatinib, trametinib, sunitinib, cobimetinib, dabrafenib, erlotinib, lapatinib, nilotinib, bosutinib, sorafenib, and vemurafenib) has been developed and validated. This multi-analyte LC-MS/MS assay is of interest for anticancer drug combination therapy. METHODS: After a simple protein precipitation of plasma samples, the chromatographic separation was performed using a UPLC system coupled with MS/MS in a positive ionization mode...
November 16, 2016: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/27858461/how-could-patient-reported-outcomes-improve-patient-management-in-chronic-myeloid-leukemia
#18
Federico De Marchi, Marta Medeot, Renato Fanin, Mario Tiribelli
Patients reported outcome (PRO) are still under-used in patients with chronic myeloid leukemia (CML) treated with tyrosine kinase inhibitors (TKIs), though data on the correlation between quality of life (QoL) and therapeutic efficacy are increasingly known. Chronic low-grade toxicities can reduce patient's QoL and negatively impact on adherence. Areas covered: This review will focus on the role of QoL questionnaires in patients with CML, receiving imatinib or newer TKIs (dasatinib, nilotinib, bosutinib, ponatinib)...
January 2017: Expert Review of Hematology
https://www.readbyqxmd.com/read/27842767/drug-hepatotoxicity-newer-agents
#19
REVIEW
Chalermrat Bunchorntavakul, K Rajender Reddy
Idiosyncratic hepatotoxicity is one of the most common reasons for an approved drug being restricted. This article focuses on hepatotoxicity of selected and recently introduced agents, such as, tyrosine kinase inhibitors, monoclonal antibodies, novel oral anticoagulants, newer antiplatelets, antibiotics, anti-diabetics, anti-epileptics, anti-depressants, anti-psychotics and anti-retrovirals. Overall, the incidence of clinically relevant hepatotoxicity from newer agents seems to be lower than that of the older agents...
February 2017: Clinics in Liver Disease
https://www.readbyqxmd.com/read/27777385/decreased-mtor-signalling-reduces-mitochondrial-ros-in-brain-via-accumulation-of-the-telomerase-protein-tert-within-mitochondria
#20
Satomi Miwa, Rafal Czapiewski, Tengfei Wan, Amy Bell, Kirsten N Hill, Thomas von Zglinicki, Gabriele Saretzki
Telomerase in its canonical function maintains telomeres in dividing cells. In addition, the telomerase protein TERT has non-telomeric functions such as shuttling to mitochondria resulting in a decreased oxidative stress, DNA damage and apoptosis. TERT protein persists in adult neurons and can co-localise to mitochondria under various stress conditions. We show here that TERT expression decreased in mouse brain during aging while release of reactive oxygen species (ROS) from the mitochondrial electron transport chain increased...
October 22, 2016: Aging
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