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Development of a Test That Measures Real-Time HER2 Signaling Function in Live Breast Cancer Cell Lines and Primary Cells Yao Huang1, David J
Huang et al. BMC Cancer (2017) 17:199 DOI 10.1186/s12885-017-3181-0 RESEARCH ARTICLE Open Access Development of a test that measures real-time HER2 signaling function in live breast cancer cell lines and primary cells Yao Huang1, David J. Burns1, Benjamin E. Rich1, Ian A. MacNeil1, Abhijit Dandapat1, Sajjad M. Soltani1, Samantha Myhre1, Brian F. Sullivan1, Carol A. Lange2, Leo T. Furcht3 and Lance G. Laing1* Abstract Background: Approximately 18–20% of all human breast cancers have overexpressed human epidermal growth factor receptor 2 (HER2). Standard clinical practice is to treat only overexpressed HER2 (HER2+) cancers with targeted anti-HER2 therapies. However, recent analyses of clinical trial data have found evidence that HER2-targeted therapies may benefit a sub-group of breast cancer patients with non-overexpressed HER2. This suggests that measurement of other biological factors associated with HER2 cancer, such as HER2 signaling pathway activity, should be considered as an alternative means of identifying patients eligible for HER2 therapies. Methods: A new biosensor-based test (CELxTM HSF) that measures HER2 signaling activity in live cells is demonstrated using a set of 19 human HER2+ and HER2– breast cancer reference cell lines and primary cell samples derived from two fresh patient tumor specimens. Pathway signaling is elucidated by use of highly specific agonists and antagonists. The test method relies upon well-established phenotypic, adhesion-related, impedance changes detected by the biosensor. Results: The analytical sensitivity and analyte specificity of this method was demonstrated using ligands with high affinity and specificity for HER1 and HER3. The HER2-driven signaling quantified ranged 50-fold between the lowest and highest cell lines. -
Vandetanib-Eluting Beads for the Treatment of Liver Tumours
VANDETANIB-ELUTING BEADS FOR THE TREATMENT OF LIVER TUMOURS ALICE HAGAN A thesis submitted in partial fulfilment of the requirements for the University of Brighton for the degree of Doctor of Philosophy June 2018 ABSTRACT Drug-eluting bead trans-arterial chemo-embolisation (DEB-TACE) is a minimally invasive interventional treatment for intermediate stage hepatocellular carcinoma (HCC). Drug loaded microspheres, such as DC Bead™ (Biocompatibles UK Ltd) are selectively delivered via catheterisation of the hepatic artery into tumour vasculature. The purpose of DEB-TACE is to physically embolise tumour-feeding vessels, starving the tumour of oxygen and nutrients, whilst releasing drug in a controlled manner. Due to the reduced systemic drug exposure, toxicity is greatly reduced. Embolisation-induced ischaemia is intended to cause tumour necrosis, however surviving hypoxic cells are known to activate hypoxia inducible factor (HIF-1) which leads to the upregulation of several pro-survival and pro-angiogenic pathways. This can lead to tumour revascularisation, recurrence and poor treatment outcomes, providing a rationale for combining anti-angiogenic agents with TACE treatment. Local delivery of these agents via DEBs could provide sustained targeted therapy in combination with embolisation, reducing systemic exposure and therefore toxicity associated with these drugs. This thesis describes for the first time the loading of the DEB DC Bead and the radiopaque DC Bead LUMI™ with the tyrosine kinase inhibitor vandetanib. Vandetanib selectively inhibits vascular endothelial growth factor receptor 2 (VEGFR2) and epidermal growth factor receptor (EGFR), two signalling receptors involved in angiogenesis and HCC pathogenesis. Physicochemical properties of vandetanib loaded beads such as maximum loading capacity, effect on size, radiopacity and drug distribution were evaluated using various analytical techniques. -
Microsomal Antiestrogen-Binding Site Ligands Induce Growth Control and Differentiation of Human Breast Cancer Cells Through the Modulation of Cholesterol Metabolism
3707 Microsomal antiestrogen-binding site ligands induce growth control and differentiation of human breast cancer cells through the modulation of cholesterol metabolism Bruno Payre´,1,2,3,5 Philippe de Medina,1,4 with other AEBS ligands and with zymostenol and DHC. Nadia Boubekeur,1,2,3 Loubna Mhamdi,4 Vitamin E abrogates the induction of differentiation and Justine Bertrand-Michel,6 Franc¸ois Terce´,6 reverses the control of cell growth produced by AEBS Isabelle Fourquaux,3,5 Dominique Goudoune`che,3,5 ligands, zymostenol, and DHC, showing the importance Michel Record,1,2,3 Marc Poirot,1,2,3 of the oxidative processes in this effect. AEBS ligands induced differentiation in estrogen receptor-negative and Sandrine Silvente-Poirot1,2,3 mammary tumor cell lines SKBr-3 and MDA-MB-468 but 1INSERM, U-563; 2Institut Claudius Regaud; 3Universite´Toulouse with a lower efficiency than observed with MCF-7. Toge- III Paul Sabatier; 4Affichem; 5Universite´Toulouse III Paul Sabatier, ther, these data show that AEBS ligands exert an anti- Faculte´deMe´decine Toulouse-Rangueil, Centre de Microscopie proliferative effect on mammary cancer cells by inducing 6 Electronique Applique´e` a la Biologie; Plateau technique de cell differentiation and growth arrest and highlight the lipidomique, IFR30, Genopole Toulouse, INSERM U-563, Toulouse, France importance of cholesterol metabolism in these effects. [Mol Cancer Ther 2008;7(12):3707–18] Abstract Introduction The microsomal antiestrogen-binding site (AEBS) is a high- affinity membranous binding site for the antitumor drug The microsomal antiestrogen-binding site (AEBS) was first tamoxifen that selectively binds diphenylmethane deriva- described in the 1980s as a high-affinity binding site for tives of tamoxifen such as PBPE and mediates their anti- tamoxifen,distinct from the estrogen receptors (ER; ref. -
Predictive QSAR Tools to Aid in Early Process Development of Monoclonal Antibodies
Predictive QSAR tools to aid in early process development of monoclonal antibodies John Micael Andreas Karlberg Published work submitted to Newcastle University for the degree of Doctor of Philosophy in the School of Engineering November 2019 Abstract Monoclonal antibodies (mAbs) have become one of the fastest growing markets for diagnostic and therapeutic treatments over the last 30 years with a global sales revenue around $89 billion reported in 2017. A popular framework widely used in pharmaceutical industries for designing manufacturing processes for mAbs is Quality by Design (QbD) due to providing a structured and systematic approach in investigation and screening process parameters that might influence the product quality. However, due to the large number of product quality attributes (CQAs) and process parameters that exist in an mAb process platform, extensive investigation is needed to characterise their impact on the product quality which makes the process development costly and time consuming. There is thus an urgent need for methods and tools that can be used for early risk-based selection of critical product properties and process factors to reduce the number of potential factors that have to be investigated, thereby aiding in speeding up the process development and reduce costs. In this study, a framework for predictive model development based on Quantitative Structure- Activity Relationship (QSAR) modelling was developed to link structural features and properties of mAbs to Hydrophobic Interaction Chromatography (HIC) retention times and expressed mAb yield from HEK cells. Model development was based on a structured approach for incremental model refinement and evaluation that aided in increasing model performance until becoming acceptable in accordance to the OECD guidelines for QSAR models. -
(12) United States Patent (10) Patent No.: US 9,375.433 B2 Dilly Et Al
US009375433B2 (12) United States Patent (10) Patent No.: US 9,375.433 B2 Dilly et al. (45) Date of Patent: *Jun. 28, 2016 (54) MODULATORS OF ANDROGENSYNTHESIS (52) U.S. Cl. CPC ............. A6 IK3I/519 (2013.01); A61 K3I/201 (71) Applicant: Tangent Reprofiling Limited, London (2013.01); A61 K3I/202 (2013.01); A61 K (GB) 31/454 (2013.01); A61K 45/06 (2013.01) (72) Inventors: Suzanne Dilly, Oxfordshire (GB); (58) Field of Classification Search Gregory Stoloff, London (GB); Paul USPC .................................. 514/258,378,379, 560 Taylor, London (GB) See application file for complete search history. (73) Assignee: Tangent Reprofiling Limited, London (56) References Cited (GB) U.S. PATENT DOCUMENTS (*) Notice: Subject to any disclaimer, the term of this 5,364,866 A * 1 1/1994 Strupczewski.......... CO7C 45/45 patent is extended or adjusted under 35 514,254.04 U.S.C. 154(b) by 0 days. 5,494.908 A * 2/1996 O’Malley ............. CO7D 261/20 514,228.2 This patent is Subject to a terminal dis 5,776,963 A * 7/1998 Strupczewski.......... CO7C 45/45 claimer. 514,217 6,977.271 B1* 12/2005 Ip ........................... A61K 31, 20 (21) Appl. No.: 14/708,052 514,560 OTHER PUBLICATIONS (22) Filed: May 8, 2015 Calabresi and Chabner (Goodman & Gilman's The Pharmacological (65) Prior Publication Data Basis of Therapeutics, 10th ed., 2001).* US 2015/O238491 A1 Aug. 27, 2015 (Cecil's Textbook of Medicine pp. 1060-1074 published 2000).* Stedman's Medical Dictionary (21st Edition, Published 2000).* Okamoto et al (Journal of Pain and Symptom Management vol. -
Advances and Limitations of Antibody Drug Conjugates for Cancer
biomedicines Review Advances and Limitations of Antibody Drug Conjugates for Cancer Candice Maria Mckertish and Veysel Kayser * Sydney School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia; [email protected] * Correspondence: [email protected]; Tel.: +61-2-9351-3391 Abstract: The popularity of antibody drug conjugates (ADCs) has increased in recent years, mainly due to their unrivalled efficacy and specificity over chemotherapy agents. The success of the ADC is partly based on the stability and successful cleavage of selective linkers for the delivery of the payload. The current research focuses on overcoming intrinsic shortcomings that impact the successful devel- opment of ADCs. This review summarizes marketed and recently approved ADCs, compares the features of various linker designs and payloads commonly used for ADC conjugation, and outlines cancer specific ADCs that are currently in late-stage clinical trials for the treatment of cancer. In addition, it addresses the issues surrounding drug resistance and strategies to overcome resistance, the impact of a narrow therapeutic index on treatment outcomes, the impact of drug–antibody ratio (DAR) and hydrophobicity on ADC clearance and protein aggregation. Keywords: antibody drug conjugates; drug resistance; linkers; payloads; therapeutic index; target specific; ADC clearance; protein aggregation Citation: Mckertish, C.M.; Kayser, V. Advances and Limitations of Antibody Drug Conjugates for 1. Introduction Cancer. Biomedicines 2021, 9, 872. Conventional cancer therapy often entails a low therapeutic window and non-specificity https://doi.org/10.3390/ of chemotherapeutic agents that consequently affects normal cells with high mitotic rates biomedicines9080872 and provokes an array of adverse effects, and in some cases leads to drug resistance [1]. -
Pharmacokinetics and Biodistribution of the Anti-Tumor Immunoconjugate, Cantuzumab Mertansine (Huc242-DM1), and Its Two Components in Mice
JPET Fast Forward. Published on November 21, 2003 as DOI: 10.1124/jpet.103.060533 JPET FastThis Forward. article has not Published been copyedited on andNovember formatted. The 21, final 2003 version as mayDOI:10.1124/jpet.103.060533 differ from this version. JPET #60533 Pharmacokinetics and biodistribution of the anti-tumor immunoconjugate, cantuzumab mertansine (huC242-DM1), and its two components in mice Hongsheng Xie, Charlene Audette, Mary Hoffee, John M. Lambert, and Walter A. Blättler ImmunoGen, Inc, 128 Sidney Street, Cambridge, MA 02139 Downloaded from jpet.aspetjournals.org at ASPET Journals on October 2, 2021 1 Copyright 2003 by the American Society for Pharmacology and Experimental Therapeutics. JPET Fast Forward. Published on November 21, 2003 as DOI: 10.1124/jpet.103.060533 This article has not been copyedited and formatted. The final version may differ from this version. JPET #60533 Pharmacokinetics of cantuzumab mertansine in mice Hongsheng Xie ImmunoGen, Inc. 128 Sidney Street Downloaded from Cambridge, MA 02139 Tel.: (617) 995-2500 jpet.aspetjournals.org Fax: (617) 995-2510 e-mail: [email protected] at ASPET Journals on October 2, 2021 Number of text pages: 33 Number of tables: 2 Number of figures: 6 Number of references: 20 Number of words in the abstract: 219 Number of words in the introduction: 587 Number of words in the discussion: 1538 2 JPET Fast Forward. Published on November 21, 2003 as DOI: 10.1124/jpet.103.060533 This article has not been copyedited and formatted. The final version may differ from this version. JPET #60533 Abstract The humanized monoclonal antibody-maytansinoid conjugate, cantuzumab mertansine (huC242-DM1) that contains on average three to four linked drug molecules per antibody molecule was evaluated in CD-1 mice for its pharmacokinetic behavior and tissue distribution and the results were compared with those of the free antibody, huC242. -
Maytenus Ovatus (Schweinf.) an African Medicinal Plant Yielding Potential Anti-Cancer Drugs
Volume 1- Issue 7 : 2017 DOI: 10.26717/BJSTR.2017.01.000571 S Sumesh Kumar. Biomed J Sci & Tech Res ISSN: 2574-1241 Review Article Open Access Maytenus ovatus (schweinf.) An African Medicinal Plant Yielding Potential Anti-cancer Drugs Vasanthakumar K1, Sumesh Kumar S*2 and Tsegay Shimelis3 1Professor of the Horticulture Program, Haramaya University, Ethiopia 2Asst Professor in Psychiatric Nursing, Haramaya University, Ethiopia 3Graduate Assistant of the Horticulture Program, Haramaya University, Ethiopia Received: December 01, 2017; Published: December 06, 2017 *Corresponding author: S Sumesh Kumar, Asst Professor in Psychiatric Nursing , School Of Nursing and Midwifery, Haramaya University, Ethiopia, Tel : ; Email: Introduction There can be many years between promising laboratory work Maytenus ovatus (Schweinf.) of the family Celastraceous is a and the availability of an effective anti-cancer drug. In the 1950’s scientists began systematically examining natural organisms as a and is widespread in the savannah regions of tropical Africa [1]. shrub usually spiny with whitish flowers bearing reddish fruits source of useful anti-cancer substances [6]. It has recently been Mountains and sub-mountainous regions of African countries, argued that “the use of natural products has been the single most viz., Ethiopia, Kenya, Tanzania, Uganda, Mozambique and others successful strategy in the discovery of novel anti-cancer medicines”. are wild habitats for the species, Maytenus ovatus, M. serratus, M. These phyto-chemicals that is selectively more toxic to cancer cells heterophylla and M. senegalensis [2]. Maytansine, a benzo-ansa- than normal cells have been used in screening programs and are macrolide (ansamycin antibiotic) is a highly potent microtubule- developed as potential chemotherapy drugs. -
WO 2015/028850 Al 5 March 2015 (05.03.2015) P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2015/028850 Al 5 March 2015 (05.03.2015) P O P C T (51) International Patent Classification: AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, C07D 519/00 (2006.01) A61P 39/00 (2006.01) BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, C07D 487/04 (2006.01) A61P 35/00 (2006.01) DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, A61K 31/5517 (2006.01) A61P 37/00 (2006.01) HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KN, KP, KR, A61K 47/48 (2006.01) KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, (21) International Application Number: OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, PCT/IB2013/058229 SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, (22) International Filing Date: TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, 2 September 2013 (02.09.2013) ZW. (25) Filing Language: English (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (26) Publication Language: English GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, (71) Applicant: HANGZHOU DAC BIOTECH CO., LTD UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, [US/CN]; Room B2001-B2019, Building 2, No 452 Sixth TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, Street, Hangzhou Economy Development Area, Hangzhou EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, City, Zhejiang 310018 (CN). -
Administration of CI-1033, an Irreversible Pan-Erbb Tyrosine
7112 Vol. 10, 7112–7120, November 1, 2004 Clinical Cancer Research Featured Article Administration of CI-1033, an Irreversible Pan-erbB Tyrosine Kinase Inhibitor, Is Feasible on a 7-Day On, 7-Day Off Schedule: A Phase I Pharmacokinetic and Food Effect Study Emiliano Calvo,1 Anthony W. Tolcher,1 sorption and elimination adequately described the pharma- Lisa A. Hammond,1 Amita Patnaik,1 cokinetic disposition. CL/F, apparent volume of distribution ؎ ؎ 1 2 (Vd/F), and ka (mean relative SD) were 280 L/hour ؎Johan S. de Bono, Irene A. Eiseman, ؎ ؊1 2 2 33%, 684 L 20%, and 0.35 hour 69%, respectively. Stephen C. Olson, Peter F. Lenehan, C values were achieved in 2 to 4 hours. Systemic CI-1033 1 3 max Heather McCreery, Patricia LoRusso, and exposure was largely unaffected by administration of a high- 1 Eric K. Rowinsky fat meal. At 250 mg, concentration values exceeded IC50 1Institute for Drug Development, Cancer Therapy and Research values required for prolonged pan-erbB tyrosine kinase in- Center, University of Texas Health Science Center at San Antonio, hibition in preclinical assays. 2 San Antonio, Texas, Pfizer Global Research and Development, Ann Conclusions: The recommended dose on this schedule is Arbor Laboratories, Ann Arbor, Michigan, 3Wayne State University, University Health Center, Detroit, Michigan 250 mg/day. Its tolerability and the biological relevance of concentrations achieved at the maximal tolerated dose war- rant consideration of disease-directed evaluations. This in- ABSTRACT termittent treatment schedule can be used without regard to Purpose: To determine the maximum tolerated dose of meals. -
Therapeutic Targeting of the IGF Axis
cells Review Therapeutic Targeting of the IGF Axis Eliot Osher and Valentine M. Macaulay * Department of Oncology, University of Oxford, Oxford, OX3 7DQ, UK * Correspondence: [email protected]; Tel.: +44-1865617337 Received: 8 July 2019; Accepted: 9 August 2019; Published: 14 August 2019 Abstract: The insulin like growth factor (IGF) axis plays a fundamental role in normal growth and development, and when deregulated makes an important contribution to disease. Here, we review the functions mediated by ligand-induced IGF axis activation, and discuss the evidence for the involvement of IGF signaling in the pathogenesis of cancer, endocrine disorders including acromegaly, diabetes and thyroid eye disease, skin diseases such as acne and psoriasis, and the frailty that accompanies aging. We discuss the use of IGF axis inhibitors, focusing on the different approaches that have been taken to develop effective and tolerable ways to block this important signaling pathway. We outline the advantages and disadvantages of each approach, and discuss progress in evaluating these agents, including factors that contributed to the failure of many of these novel therapeutics in early phase cancer trials. Finally, we summarize grounds for cautious optimism for ongoing and future studies of IGF blockade in cancer and non-malignant disorders including thyroid eye disease and aging. Keywords: IGF; type 1 IGF receptor; IGF-1R; cancer; acromegaly; ophthalmopathy; IGF inhibitor 1. Introduction Insulin like growth factors (IGFs) are small (~7.5 kDa) ligands that play a critical role in many biological processes including proliferation and protection from apoptosis and normal somatic growth and development [1]. IGFs are members of a ligand family that includes insulin, a dipeptide comprised of A and B chains linked via two disulfide bonds, with a third disulfide linkage within the A chain. -
TE INI (19 ) United States (12 ) Patent Application Publication ( 10) Pub
US 20200187851A1TE INI (19 ) United States (12 ) Patent Application Publication ( 10) Pub . No .: US 2020/0187851 A1 Offenbacher et al. (43 ) Pub . Date : Jun . 18 , 2020 ( 54 ) PERIODONTAL DISEASE STRATIFICATION (52 ) U.S. CI. AND USES THEREOF CPC A61B 5/4552 (2013.01 ) ; G16H 20/10 ( 71) Applicant: The University of North Carolina at ( 2018.01) ; A61B 5/7275 ( 2013.01) ; A61B Chapel Hill , Chapel Hill , NC (US ) 5/7264 ( 2013.01 ) ( 72 ) Inventors: Steven Offenbacher, Chapel Hill , NC (US ) ; Thiago Morelli , Durham , NC ( 57 ) ABSTRACT (US ) ; Kevin Lee Moss, Graham , NC ( US ) ; James Douglas Beck , Chapel Described herein are methods of classifying periodontal Hill , NC (US ) patients and individual teeth . For example , disclosed is a method of diagnosing periodontal disease and / or risk of ( 21) Appl. No .: 16 /713,874 tooth loss in a subject that involves classifying teeth into one of 7 classes of periodontal disease. The method can include ( 22 ) Filed : Dec. 13 , 2019 the step of performing a dental examination on a patient and Related U.S. Application Data determining a periodontal profile class ( PPC ) . The method can further include the step of determining for each tooth a ( 60 ) Provisional application No.62 / 780,675 , filed on Dec. Tooth Profile Class ( TPC ) . The PPC and TPC can be used 17 , 2018 together to generate a composite risk score for an individual, which is referred to herein as the Index of Periodontal Risk Publication Classification ( IPR ) . In some embodiments , each stage of the disclosed (51 ) Int. Cl. PPC system is characterized by unique single nucleotide A61B 5/00 ( 2006.01 ) polymorphisms (SNPs ) associated with unique pathways , G16H 20/10 ( 2006.01 ) identifying unique druggable targets for each stage .