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(TPZ) Prodrugs for the Management of Hypoxic Solid Tumors by Sindhuja
Evaluation of bioreductively-activated Tirapazamine (TPZ) prodrugs for the management of hypoxic solid tumors by Sindhuja Pattabhi Raman A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Cancer Sciences Department of Oncology University of Alberta © Sindhuja Pattabhi Raman, 2019 Abstract Solid tumors often have large areas with low levels of oxygen (termed hypoxic regions), which are associated with poor prognosis and treatment response. Tirapazamine (TPZ), a hypoxia targeting anticancer drug, started as a promising candidate to deal with this issue. However, it was withdrawn from the clinic due to severe neurotoxic side effects and poor target delivery. Hypoxic cells overexpress glucose transporters (GLUT) - a key feature during hypoxic tumor progression. Our project aims at conjugating TPZ with glucose to exploit the upregulated GLUTs for its delivery, and thereby facilitate the therapeutic management of hypoxic tumors. We hypothesized that glucose-conjugated TPZ (G6-TPZ) would be selectively recruited to these receptors, facilitating its entrapment in poorly oxygenated cells only, with minimal damage to their oxygenated counterparts. However, our results reveal that the addition of the glucose moiety to TPZ was counterproductive since G6-TPZ displayed selective hypoxic cytotoxicity only at very high concentrations of the compound. We speculate that the reduced cytotoxicity of G6-TPZ might be due to the fact that the compound was not taken up by the cells. In order to monitor the cellular uptake of TPZ, we developed a click chemistry-based approach by incorporating an azido (N3) group to our parent compound (N3-TPZ). We observed that the azido-conjugated TPZ was highly hypoxia selective and the compound successfully tracks cellular hypoxia. -
A Phase II Study of Paclitaxel and Capecitabine As a First-Line Combination Chemotherapy for Advanced Gastric Cancer
British Journal of Cancer (2008) 98, 316 – 322 & 2008 Cancer Research UK All rights reserved 0007 – 0920/08 $30.00 www.bjcancer.com A phase II study of paclitaxel and capecitabine as a first-line combination chemotherapy for advanced gastric cancer Clinical Studies HJ Kang1, HM Chang1, TW Kim1, M-H Ryu1, H-J Sohn1, JH Yook2,STOh2, BS Kim2, J-S Lee1 and Y-K Kang*,1 1 2 Division of Oncology, Department of Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea; Department of Surgery, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea Paclitaxel and capecitabine, which have distinct mechanisms of action and toxicity profiles, have each shown high activity as single agents in gastric cancer. Synergistic interaction between these two drugs was suggested by taxane-induced upregulation of thymidine phosphorylase. We, therefore, evaluated the antitumour activity and toxicities of paclitaxel and capecitabine as first-line therapy in patients with advanced gastric cancer (AGC). Patients with histologically confirmed unresectable or metastatic AGC were treated À2 À2 with capecitabine 825 mg m p.o. twice daily on days 1–14 and paclitaxel 175 mg m i.v. on day 1 every 3 weeks until disease progression or unacceptable toxicities. Between June 2002 and May 2004, 45 patients, of median age 57 years (range ¼ 38–73 years), were treated with the combination of capecitabine and paclitaxel. After a median 6 cycles (range ¼ 1–9 cycles) of chemotherapy, 43 were evaluable for toxicity and response. A total of 2 patients showed complete response and 20 showed partial response making the overall response rate 48.9% (95% CI ¼ 30.3–63.5%). -
Method of Tumor Treatment
Europaisches Patentamt J European Patent Office 0 Publication number: 0 649 658 A1 Office europeen des brevets EUROPEAN PATENT APPLICATION 0 Application number: 94202693.1 mt . ci .6 :A61K 31/53 0 Date of filing: 19.09.94 0 Priority: 22.09.93 US 125609 Palo Alto, CA 94304-1850 (US) 0 Date of publication of application: 0 Inventor: Brown, Martin J. 26.04.95 Bulletin 95/17 c/o Sterling Winthrop, Inc., 90 Park Avenue 0 Designated Contracting States: New York 10016 (US) AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE 0 Representative: Le Guen, Gerard 0 Applicant: THE BOARD OF TRUSTEES OF THE CABINET LAVOIX LELAND STANFORD JUNIOR UNIVERSITY 2, place d'Estienne d'Orves 900 Welch Road, Suite 350 F-75441 Paris Cedex 09 (FR) 0 Method of tumor treatment. 0 The present invention provides methods for increasing the cytotoxicity of a chemotherapy agent towards a solid tumor, such tumor susceptible to treatment with the chemotherapy agent, comprising administering to a mammal having such a tumor, from about one half hour to about twenty-four hours prior to administering the chemotherapy agent, or from about one hour to about two hours after administering the chemotherapy agent, a cytotoxicity-enhancing amount of a compound of Formula I. The invention also provides kits for treatment of such tumors which comprise a chemotherapy agent and a cytotoxicity-enhancing amount of a 1,2,4-ben- zotriazine oxide as defined in Formula I. The present invention also provides the use of a compound of Formula I capable of exerting a cytotoxic- enhancing effect on a cancer tumor for the manufacture of a medicament, for the therapeutic administration to a mammal having such a tumour from about one half hour to about twenty-four hours prior to treatment of said tumor with a chemotherapy agent. -
A Comparison Between Triplet and Doublet Chemotherapy in Improving
Guo et al. BMC Cancer (2019) 19:1125 https://doi.org/10.1186/s12885-019-6294-9 RESEARCH ARTICLE Open Access A comparison between triplet and doublet chemotherapy in improving the survival of patients with advanced gastric cancer: a systematic review and meta-analysis Xinjian Guo1, Fuxing Zhao1, Xinfu Ma1, Guoshuang Shen1, Dengfeng Ren1, Fangchao Zheng1,2,3, Feng Du4, Ziyi Wang1, Raees Ahmad1, Xinyue Yuan1, Junhui Zhao1* and Jiuda Zhao1* Abstract Background: Chemotherapy can improve the survival of patients with advanced gastric cancer. However, whether triplet chemotherapy can further improve the survival of patients with advanced gastric cancer compared with doublet chemotherapy remains controversial. This study reviewed and updated all published and eligible randomized controlled trials (RCTs) to compare the efficacy, prognosis, and toxicity of triplet chemotherapy with doublet chemotherapy in patients with advanced gastric cancer. Methods: RCTs on first-line chemotherapy in advanced gastric cancer on PubMed, Embase, and the Cochrane Register of Controlled Trials and all abstracts from the annual meetings of the European Society for Medical Oncology (ESMO) and the American Society of Clinical Oncology conferences up to October 2018 were searched. The primary outcome was overall survival, while the secondary outcomes were progression-free survival (PFS), time to progress (TTP), objective response rate (ORR), and toxicity. Results: Our analysis included 23 RCTs involving 4540 patients and 8 types of triplet and doublet chemotherapy regimens, and systematic review and meta-analysis revealed that triplet chemotherapy was superior compared with doublet chemotherapy in terms of improving median OS (HR = 0.92; 95% CI, 0.86–0.98; P = 0.02) and PFS (HR = 0.82; 95% CI, 0.69–0.97; P = 0.02) and TTP (HR = 0.92; 95% CI, 0.86–0.98; P = 0.02) and ORR (OR = 1.21; 95% CI, 1.12–1.31; P < 0.0001) among overall populations. -
Theranostics Self-Accelerating H2O2-Responsive Plasmonic
Theranostics 2020, Vol. 10, Issue 19 8691 Ivyspring International Publisher Theranostics 2020; 10(19): 8691-8704. doi: 10.7150/thno.45392 Research Paper Self-accelerating H2O2-responsive Plasmonic Nanovesicles for Synergistic Chemo/starving therapy of Tumors Yao Tang1, Yuejia Ji1, Chenglin Yi2, Di Cheng1, Bin Wang1, Yun Fu1, Yufang Xu1, Xuhong Qian1, Yahya E. Choonara3, Viness Pillay3, Weiping Zhu1, Yunen Liu4 and Zhihong Nie2 1. State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China. 2. State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China. 3. Department of Pharmacy and Pharmacology, University of the Witwatersrand, Parktown 2193 Johannesburg, South Africa. 4. Department of Emergency Medicine, the General Hospital of Northern Theater Command, Laboratory of Rescue Center of Severe Trauma PLA, Shenyang l10016, China. Corresponding author: E-mails: [email protected] (Z. Nie); [email protected] (Y. Liu); [email protected] (W. Zhu). © The author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/). See http://ivyspring.com/terms for full terms and conditions. Received: 2020.02.27; Accepted: 2020.06.17; Published: 2020.07.09 Abstract Rationale: Nanoscale vehicles responsive to abnormal variation in tumor environment are promising for use in targeted delivery of therapeutic drugs specifically to tumor sites. Herein, we report the design and fabrication of self-accelerating H2O2-responsive plasmonic gold nanovesicles (GVs) encapsulated with tirapazamine (TPZ) and glucose oxidase (GOx) for synergistic chemo/starving therapy of cancers. -
1. Recommendations of the Ndac (Oncology and Hematology) Held on 10.12.2011
1. RECOMMENDATIONS OF THE NDAC (ONCOLOGY AND HEMATOLOGY) HELD ON 10.12.2011:- The NDAC (Oncology and Hematology) deliberated the proposals on 10.12.2011 and recommended the following:- AGENDA NAME OF DRUG RECOMMENDATIONS NO. Global Clinical Trials Recommended for giving permission for clinical trial subject to condition that trasuzumab naive patient arm should be excluded from the study, as patients cannot be left untreated of trastuzumab therapy / or 1 Afatinib treated with only investigational drug. Patients aged 18 to 65 years should be included in the study. Recommended for giving permission for clinical trial subject to the following conditions:- ICD is very extensive and too technical for the 2 Netupitant/ patient to understand. It should be simplified. Palonosetron Definite statistical tests for the comparison of primary and secondary endpoints should be incorporated in the protocol. Recommended for giving permission for clinical trial subject to the following conditions:- Periodic ophthalmic examination should be performed at every visit as the drug is reported to have ophthalmological side effects in 53 % cases in 3 Crizotinib phase 2 study. Patients aged 18 to 65 years should be included in the protocol. Method for causality assessment by the investigator should be included in the protocol. New Drugs Approved with the condition that structured post marketing trial (Phase 4) should be conducted in 4. Indian population. Report of post marketing trials Crizotinib ongoing in other countries when completed should be submitted. 5. Abiraterone Approved with condition of conducting Post Acetate Marketing trial (Phase IV) in Indian population to monitor the adverse effects. Report of post marketing trials ongoing in other countries when completed should be submitted. -
E-Table 1. Drug Classification Category Name Generic Name
BMJ Publishing Group Limited (BMJ) disclaims all liability and responsibility arising from any reliance Supplemental material placed on this supplemental material which has been supplied by the author(s) Thorax e-Table 1. Drug classification Category Name Generic Name Antiplatelets clopidogrel, cilostazol, ticlopidine2, beraprost, beraprost–long acting, complavin Anticoagulants 2,3 dabigatran Statins1,2,3 atorvastatin2, simvastatin, pitavastatin, fluvastatin, pravastatin, rosuvastatin, amlodipine/atorvastatin Sodium channel blockers4,5† mexiletine, aprindine, cibenzoline Beta blocker acebutolol2 Class III antiarrhythmic drugs amiodarone1–6 Calcium channel blockers bepridil1, amlodipine/atorvastatin, telmisartan/amlodipine, valsartan/amlodipine, valsartan/cilnidipine, candesartan/amlodipine Angiotensin/converting enzyme enalapril inhibitor2‡ Thiazides trichlormethiazide, hydrochlorothiazide3,5, benzylhydrochlorothiazide/reserpine/carbazochrome, mefruside, telmisartan/hydrochlorothiazide, valsartan/hydrochlorothiazide, candesartan/hydrochlorothiazide, candesartan/trichlormethiazide, losartan/hydrochlorothiazide NSAIDs diclofenac2, celecoxib, loxoprofen, etodolac, nabumetone, pranoprofen Anti-rheumatics actarit, iguratimod, tofacitinib, penicillamine2–5, leflunomide1,3, sodium aurothiomalate2–6#, bucillamine Leukotriene receptor antagonist2* pranlukast 5-ASA mesalazine, salazosulfapyridine5 Tricyclic antidepressant Imipramine5, cromipramine, maprotiline Antiepileptics valproate, phenytoin2,3,5, ethotoin, carbamazepine2–5, zonisamide Interferon1,2,3 -
Genetic Factors Influencing Pyrimidine- Antagonist Chemotherapy
The Pharmacogenomics Journal (2005) 5, 226–243 & 2005 Nature Publishing Group All rights reserved 1470-269X/05 $30.00 www.nature.com/tpj REVIEW Genetic factors influencing Pyrimidine- antagonist chemotherapy JG Maring1 ABSTRACT 2 Pyrimidine antagonists, for example, 5-fluorouracil (5-FU), cytarabine (ara-C) HJM Groen and gemcitabine (dFdC), are widely used in chemotherapy regimes for 2 FM Wachters colorectal, breast, head and neck, non-small-cell lung cancer, pancreatic DRA Uges3 cancer and leukaemias. Extensive metabolism is a prerequisite for conversion EGE de Vries4 of these pyrimidine prodrugs into active compounds. Interindividual variation in the activity of metabolising enzymes can affect the extent of 1Department of Pharmacy, Diaconessen Hospital prodrug activation and, as a result, act on the efficacy of chemotherapy Meppel & Bethesda Hospital Hoogeveen, Meppel, treatment. Genetic factors at least partly explain interindividual variation in 2 The Netherlands; Department of Pulmonary antitumour efficacy and toxicity of pyrimidine antagonists. In this review, Diseases, University of Groningen & University Medical Center Groningen, Groningen, The proteins relevant for the efficacy and toxicity of pyrimidine antagonists will Netherlands; 3Department of Pharmacy, be summarised. In addition, the role of germline polymorphisms, tumour- University of Groningen & University Medical specific somatic mutations and protein expression levels in the metabolic Center Groningen, Groningen, The Netherlands; pathways and clinical pharmacology -
Chemical Concentrations in Cell Culture Compartments (C5) – Free Concentrations
Kisitu et al.: Chemical Concentrations in Cell Culture Compartments (C5) – Free Concentrations Supplementary Data1 Table of contents Box S1: Concentrations then and now………………………………………………………………………………… 1 Derivation of the “extracellular biokinetics” formula…………………………………………………………………... 2 Box S2: Example use of Equation S13 with an acidic and basic drug……………………………………………… 7 Table S1: Cell composition data essential for biokinetics calculations…………………………………………….. 7 Table S2: Measured and predicted human plasma fu values………………………………………………………. 8 References………………………….…………………………………………………………………………………….. 13 Box S1: Concentrations then and now Dose: The concept of dose has been defined extensively before (Kisitu et al., 2019). It describes an absolute amount per experimental system (e.g., per mouse or per human patient). When the concept is applied to NAM, it describes the amount of chemical per cell culture well. Example, if a chemical concentration in the medium is 1 mM and the well contains 1 mL of medium, then the dose is 1 µmole; if the same well contains 2 mL medium, then the concentration is the same, but the dose doubles. Weight-normalized doses: Already in Paracelsus’ time it must have been clear that a dose tolerated by a tall and heavy adult may be lethal to a small child. This made clear that normalization to overall weight or volume is an important concept. Often normalized doses are expressed in dose per kg body weight (see Kisitu et al., 2019). Nominal concentration: If a dose in an in vitro system is normalized to the volume of the system, then a nominal concentration is obtained. This measure indicates what the drug/toxicant concentration would be if all chemical was freely dissolved and no losses/distribution occurred. -
For Personal Use. Only Reproduce with Permission from the Lancet. 45 Lencioni M, Falcone A, Allegrini G, Et Al
Further reading for A Burrows and others. Systemic treatment and liver transplantation for hepatocellular carcinoma: two ends of the therapeutic spectrum. Lancet Oncol 2004; 5: 409–18. 1 Olweny CL, Toya T, Katongole-Mbidde E, et al. Treatment of + VM 26 + 5-fluorouracil with mAMSA + VM 26 + 5-fluorouracil. hepatocellular carcinoma with Adriamycin: preliminary Oncology 1987; 44: 207–09. communication. Cancer 1975; 36: 1250–57. 25 Falkson G, Cnaan A, Simson IW, et al. A randomized phase II study 2 Vogel CL, Bayley AC, Brooker RJ, et al. A phase II study of of acivicin and 4’deoxydoxorubicin in patients with hepatocellular adriamycin (NSC 123127) in patients with hepatocellular carcinoma carcinoma in an Eastern Cooperative Oncology Group study. from Zambia and the United States. Cancer 1977; 39: 1923–29. Am J Clin Oncol 1990; 13: 510–15. 3 Johnson PJ, Williams R, Thomas H, et al. Induction of remission in 26 Mok TS, Leung TW, Lee SD, et al. A multi-centre randomized phase hepatocellular carcinoma with doxorubicin. Lancet 1978; 1: II study of nolatrexed versus doxorubicin in treatment of Chinese 1006–09. patients with advanced hepatocellular carcinoma. Cancer Chemother 4 Falkson G, Moertel CG, Lavin P, et al. Chemotherapy studies in Pharmacol 1999; 44: 307–11. primary liver cancer: a prospective randomized clinical trial. 27 Ishikawa T, Ichida T, Sugitani S, et al. Improved survival with oral Cancer 1978; 42: 2149–56. administration of enteric-coated tegafur/uracil for advanced stage 5 Olweny CL, Katongole-Mbidde E, Bahendeka S, et al. Further IV-A hepatocellular carcinoma. J Gastroenterol Hepatol 2001; 16: experience in treating patients with hepatocellular carcinoma in 452–59. -
Curriculum Vitae for Prof Søren M
CURRICULUM VITÆ FOR PROFESSOR SØREN M. BENTZEN Full Name: Søren Møller Bentzen Title: Professor, Director of the Division of Biostatistics and Bioinformatics, Department of Epidemiology and Public Health, Director of the University of Maryland Greenebaum Comprehensive Cancer Center Biostatistics Shared Service, Director of the Biostatistics Core of the Institute of Clinical and Translational Research, and Director of Translational Research, Maryland Proton Therapy Alliance, University of Maryland School of Medicine Academic Credentials : M.Sc., Ph.D., D.M.Sc., F.A.S.T.R.O. Affiliations: Professor, tenured, Department of Epidemiology and Public Health, primary faculty appointment, University of Maryland School of Medicine, Baltimore, MD, USA Professor of Radiation Oncology, secondary faculty appointment, University of Maryland School of Medicine, Baltimore, MD, USA Director, Division of Biostatistics and Bioinformatics, Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, USA Director, University of Maryland Greenebaum Comprehensive Cancer Center Biostatistics Shared Service, University of Baltimore School of Medicine, Baltimore, MD, USA Director, Biostatistics Core, Institute for Clinical and Translational Research, University of Maryland Baltimore, Baltimore, MD, USA Director of Translational Research, Maryland Proton Alliance, University of Baltimore School of Medicine, Baltimore, MD, USA Member, University of Maryland Greenebaum Comprehensive Cancer Center, Experimental Therapeutics -
The Role of Free Radicals in the Effectiveness of Anti-Cancer Chemotherapy in Hypoxic Ovarian Cells and Tumours Clifford Fong
The role of free radicals in the effectiveness of anti-cancer chemotherapy in hypoxic ovarian cells and tumours Clifford Fong To cite this version: Clifford Fong. The role of free radicals in the effectiveness of anti-cancer chemotherapy in hypoxic ovar- ian cells and tumours. [Research Report] Eigenenergy, Adelaide, Australia. 2017. hal-01659879v2 HAL Id: hal-01659879 https://hal.archives-ouvertes.fr/hal-01659879v2 Submitted on 18 Feb 2018 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. The role of free radicals in the effectiveness of anti-cancer chemotherapy in hypoxic ovarian cells and tumours Clifford W. Fong Eigenenergy, Adelaide, South Australia, Australia. Email: [email protected] Keywords: ovarian cancer; cytotoxicity; hypoxia; anoxia; normoxia; free radicals; electron affinity; Abstract It has been shown that strong linear relationships exist between the hypoxic and anoxic cytotoxicity ratios for the A2780 human ovarian cancer cell lines and the adiabatic electron affinity for 17 currently clinically used or subclinical anti-cancer drugs. A similar linear relationship is also found for the cytotoxicity ratios under normoxia, but the effect is the opposite to those found for anoxia and hypoxia.