51
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Synthesis and evaluation of pyrrolobenzodiazepine dimer antibody-drug conjugates with dual β-glucuronide and dipeptide triggers. Eur J Med Chem 2019; 179:591-607. [DOI: 10.1016/j.ejmech.2019.06.044] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/07/2019] [Accepted: 06/16/2019] [Indexed: 12/17/2022]
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52
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Mak DW, Li S, Minchom A. Challenging the recalcitrant disease—developing molecularly driven treatments for small cell lung cancer. Eur J Cancer 2019; 119:132-150. [DOI: 10.1016/j.ejca.2019.04.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/11/2019] [Accepted: 04/26/2019] [Indexed: 12/29/2022]
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53
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Lecomte M, Lipshultz JM, Kim-Lee SH, Li G, Radosevich AT. Driving Recursive Dehydration by P III/P V Catalysis: Annulation of Amines and Carboxylic Acids by Sequential C-N and C-C Bond Formation. J Am Chem Soc 2019; 141:12507-12512. [PMID: 31345031 PMCID: PMC6693942 DOI: 10.1021/jacs.9b06277] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A method
for the annulation of amines and carboxylic acids to form
pharmaceutically relevant azaheterocycles via organophosphorus PIII/PV redox catalysis is reported. The method employs
a phosphetane catalyst together with a mild bromenium oxidant and
terminal hydrosilane reductant to drive successive C–N and
C–C bond-forming dehydration events via the serial action of
a catalytic bromophosphonium intermediate. These results demonstrate
the capacity of PIII/PV redox catalysis to enable
iterative redox-neutral transformations in complement to the common
reductive driving force of the PIII/PV couple.
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Affiliation(s)
- Morgan Lecomte
- Department of Chemistry , Massachusetts Institute of Technology , 02139 Cambridge , Massachusetts , United States
| | - Jeffrey M Lipshultz
- Department of Chemistry , Massachusetts Institute of Technology , 02139 Cambridge , Massachusetts , United States
| | - Shin-Ho Kim-Lee
- Department of Chemistry , Massachusetts Institute of Technology , 02139 Cambridge , Massachusetts , United States.,Departamento de Química Orgánica, Facultad de Ciencias , Universidad Autónoma de Madrid , Cantoblanco, 28049 Madrid , Spain
| | - Gen Li
- Department of Chemistry , Massachusetts Institute of Technology , 02139 Cambridge , Massachusetts , United States
| | - Alexander T Radosevich
- Department of Chemistry , Massachusetts Institute of Technology , 02139 Cambridge , Massachusetts , United States
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54
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An FDA oncology analysis of toxicities associated with PBD-containing antibody-drug conjugates. Regul Toxicol Pharmacol 2019; 107:104429. [PMID: 31325532 DOI: 10.1016/j.yrtph.2019.104429] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 07/10/2019] [Accepted: 07/16/2019] [Indexed: 01/02/2023]
Abstract
With a new generation of antibody-drug conjugates (ADCs) that contain a drug-to-antibody ratio (DAR) of 2, the question remains whether advances in technology have resulted in more stable and tumor-specific ADCs. These ADCs are anticipated to cause minimal systemic exposures of payloads, with toxicities being evident mainly at tumor sites. We examined 15 ADCs with PBD-dimer payloads and a DAR of 2 and concluded that dose limiting toxicities in animals and in humans are generally related to the payload. Both the payloads and the ADCs had pro-inflammatory responses causing severe toxicities that were at times of low incidence, making it difficult to assess a cause-effect relationship. Due to their low incidence, single-patient cohorts may not detect these events and such design may not be suitable in first-in-human (FIH) trials. The commonly proposed approach by the sponsors for FIH dose selection was 1/6th highest non-severely toxic dose (HNSTD) in monkeys. This approach resulted in an acceptable balance of safety and efficient dose escalation in phase 1 trials, when using data from repeat-dose toxicology studies and body surface area for scaling. No sponsor used the data generated in rodents or proposed novel approaches for FIH dose selection.
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55
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Gregson SJ, Tiberghien AC, Masterson LA, Howard PW. Pyrrolobenzodiazepine Dimers as Antibody–Drug Conjugate (ADC) Payloads. CYTOTOXIC PAYLOADS FOR ANTIBODY – DRUG CONJUGATES 2019. [DOI: 10.1039/9781788012898-00296] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The pyrrolobenzodiazepine (PBD) ring system was first discovered in the 1960s and is found in several naturally occurring potent anti-tumour antibiotics. The mode of action of PBDs involves sequence-selective [purine–guanine–purine (PuGPu)] alkylation in the minor groove of DNA through covalent binding from guanine N2 to the PBD C11-position. Dimerization of the PBD ring system gives molecules that can cross-link DNA, which leads to a substantial increase in potency and DNA binding affinity and an extension of sequence-selectivity compared with monomers. PBD dimers feature as the cytotoxic component of numerous ADCs being evaluated in clinical trials. PBD-ADC clinical candidates loncastuximab tesirine, camidanlumab tesirine and rovalpituzumab tesirine employ a PBD N10 linkage while vadastuximab talirine uses a C2-linkage. The PBD dimer scaffold is versatile and offers many opportunities to diversify the ADC platform, with extensive research being performed worldwide to develop the next generation of PBD payload–linker molecules. The search for new PBD payload–linker molecules has mainly focused on changes in payload structure (e.g. PBD C2 modification and macrocyclisation), alternative conjugation strategies (e.g. haloacetamides, ‘click’ approaches and pyridyl disulphides), non-peptide triggers in the linker (e.g. disulphides) and non-cleavable derivatives (i.e. payload release through antibody degradation).
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56
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Yaghoubi S, Karimi MH, Lotfinia M, Gharibi T, Mahi-Birjand M, Kavi E, Hosseini F, Sineh Sepehr K, Khatami M, Bagheri N, Abdollahpour-Alitappeh M. Potential drugs used in the antibody-drug conjugate (ADC) architecture for cancer therapy. J Cell Physiol 2019; 235:31-64. [PMID: 31215038 DOI: 10.1002/jcp.28967] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 05/20/2019] [Indexed: 01/04/2023]
Abstract
Cytotoxic small-molecule drugs have a major influence on the fate of antibody-drug conjugates (ADCs). An ideal cytotoxic agent should be highly potent, remain stable while linked to ADCs, kill the targeted tumor cell upon internalization and release from the ADCs, and maintain its activity in multidrug-resistant tumor cells. Lessons learned from successful and failed experiences in ADC development resulted in remarkable progress in the discovery and development of novel highly potent small molecules. A better understanding of such small-molecule drugs is important for development of effective ADCs. The present review discusses requirements making a payload appropriate for antitumor ADCs and focuses on the main characteristics of commonly-used cytotoxic payloads that showed acceptable results in clinical trials. In addition, the present study represents emerging trends and recent advances of payloads used in ADCs currently under clinical trials.
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Affiliation(s)
- Sajad Yaghoubi
- Department of Clinical Microbiology, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | | | - Majid Lotfinia
- Physiology Research Center, Kashan University of Medical Sciences, Kashan, Iran.,Core Research Lab, Kashan University of Medical Sciences, Kashan, Iran
| | - Tohid Gharibi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Motahare Mahi-Birjand
- Infectious Disease Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Esmaeil Kavi
- Department of Nursing, School of Nursing, Larestan University of Medical Sciences, Larestan, Iran
| | - Fahimeh Hosseini
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Koushan Sineh Sepehr
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mehrdad Khatami
- NanoBioelectrochemistry Research Center, Bam University of Medical Sciences, Bam, Iran
| | - Nader Bagheri
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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57
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Zhang D, Fourie-O’Donohue A, Dragovich PS, Pillow TH, Sadowsky JD, Kozak KR, Cass RT, Liu L, Deng Y, Liu Y, Hop CE, Khojasteh SC. Catalytic Cleavage of Disulfide Bonds in Small Molecules and Linkers of Antibody–Drug Conjugates. Drug Metab Dispos 2019; 47:1156-1163. [DOI: 10.1124/dmd.118.086132] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 05/07/2019] [Indexed: 12/11/2022] Open
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58
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White JB, Fleming R, Masterson L, Ruddle BT, Zhong H, Fazenbaker C, Strout P, Rosenthal K, Reed M, Muniz-Medina V, Howard P, Dixit R, Wu H, Hinrichs MJ, Gao C, Dimasi N. Design and characterization of homogenous antibody-drug conjugates with a drug-to-antibody ratio of one prepared using an engineered antibody and a dual-maleimide pyrrolobenzodiazepine dimer. MAbs 2019; 11:500-515. [PMID: 30835621 DOI: 10.1080/19420862.2019.1578611] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Most strategies used to prepare homogeneous site-specific antibody-drug conjugates (ADCs) result in ADCs with a drug-to-antibody ratio (DAR) of two. Here, we report a disulfide re-bridging strategy to prepare homogeneous ADCs with DAR of one using a dual-maleimide pyrrolobenzodiazepine (PBD) dimer (SG3710) and an engineered antibody (Flexmab), which has only one intrachain disulfide bridge at the hinge. We demonstrate that SG3710 efficiently re-bridge a Flexmab targeting human epidermal growth factor receptor 2 (HER2), and the resulting ADC was highly resistant to payload loss in serum and exhibited potent anti-tumor activity in a HER2-positive gastric carcinoma xenograft model. Moreover, this ADC was tolerated in rats at twice the dose compared to a site-specific ADC with DAR of two prepared using a single-maleimide PBD dimer (SG3249). Flexmab technologies, in combination with SG3710, provide a platform for generating site-specific homogenous PBD-based ADCs with DAR of one, which have improved biophysical properties and tolerability compared to conventional site-specific PBD-based ADCs with DAR of two.
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Affiliation(s)
- Jason B White
- a Antibody Discovery and Protein Engineering , MedImmune , Gaithersburg , MD , USA
| | - Ryan Fleming
- a Antibody Discovery and Protein Engineering , MedImmune , Gaithersburg , MD , USA
| | | | - Ben T Ruddle
- a Antibody Discovery and Protein Engineering , MedImmune , Gaithersburg , MD , USA
| | - Haihong Zhong
- c Oncology Research , MedImmune , Gaithersburg , MD , USA
| | | | - Patrick Strout
- c Oncology Research , MedImmune , Gaithersburg , MD , USA
| | - Kim Rosenthal
- a Antibody Discovery and Protein Engineering , MedImmune , Gaithersburg , MD , USA
| | - Molly Reed
- d Biologics Safety Assessment , MedImmune , Gaithersburg , MD , USA
| | | | - Philip Howard
- b Spirogen Ltd , QMB Innovation Center , London , UK
| | - Rakesh Dixit
- d Biologics Safety Assessment , MedImmune , Gaithersburg , MD , USA
| | - Herren Wu
- a Antibody Discovery and Protein Engineering , MedImmune , Gaithersburg , MD , USA
| | | | - Changshou Gao
- a Antibody Discovery and Protein Engineering , MedImmune , Gaithersburg , MD , USA
| | - Nazzareno Dimasi
- a Antibody Discovery and Protein Engineering , MedImmune , Gaithersburg , MD , USA
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59
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Klebsiella oxytoca enterotoxins tilimycin and tilivalline have distinct host DNA-damaging and microtubule-stabilizing activities. Proc Natl Acad Sci U S A 2019; 116:3774-3783. [PMID: 30808763 PMCID: PMC6397511 DOI: 10.1073/pnas.1819154116] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Human gut microbes form a complex community with vast biosynthetic potential. Microbial products and metabolites released in the gut impact human health and disease. However, defining causative relationships between specific bacterial products and disease initiation and progression remains an immense challenge. This study advances understanding of the functional capacity of the gut microbiota by determining the presence, concentration, and spatial and temporal variability of two enterotoxic metabolites produced by the gut-resident Klebsiella oxytoca. We present a detailed mode of action for the cytotoxins and recapitulate their functionalities in disease models in vivo. The findings provide distinct molecular mechanisms for the enterotoxicity of the metabolites allowing them to act in tandem to damage the intestinal epithelium and cause colitis. Establishing causal links between bacterial metabolites and human intestinal disease is a significant challenge. This study reveals the molecular basis of antibiotic-associated hemorrhagic colitis (AAHC) caused by intestinal resident Klebsiella oxytoca. Colitogenic strains produce the nonribosomal peptides tilivalline and tilimycin. Here, we verify that these enterotoxins are present in the human intestine during active colitis and determine their concentrations in a murine disease model. Although both toxins share a pyrrolobenzodiazepine structure, they have distinct molecular targets. Tilimycin acts as a genotoxin. Its interaction with DNA activates damage repair mechanisms in cultured cells and causes DNA strand breakage and an increased lesion burden in cecal enterocytes of colonized mice. In contrast, tilivalline binds tubulin and stabilizes microtubules leading to mitotic arrest. To our knowledge, this activity is unique for microbiota-derived metabolites of the human intestine. The capacity of both toxins to induce apoptosis in intestinal epithelial cells—a hallmark feature of AAHC—by independent modes of action, strengthens our proposal that these metabolites act collectively in the pathogenicity of colitis.
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60
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Fu Y, Ho M. DNA damaging agent-based antibody-drug conjugates for cancer therapy. Antib Ther 2018; 1:33-43. [PMID: 30294716 DOI: 10.1093/abt/tby007] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/15/2018] [Accepted: 08/27/2018] [Indexed: 01/02/2023] Open
Abstract
Currently, four antibody-drug conjugates (ADCs) are approved by the Food and Drug Administration or the European Medicine Agency to treat cancer patients. More than 60 ADCs are in clinical development for cancer therapy. More than 60% of ADCs in clinical trials employ microtubule inhibitors as their payloads. A better understanding of payloads other than microtubule inhibitors, especially DNA-damaging agents, is important for further development of ADCs. In this review, we highlight an emerging trend of using DNA-damaging agents as payloads for ADCs. This review summarizes recent advances in our understanding gained from ongoing clinical studies; it will help to define the utility of DNA-damaging payloads for ADCs as cancer therapeutics. Future directions of the development of ADCs are also discussed, focusing on targeting drug resistance and combination treatment with immunotherapy.
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Affiliation(s)
- Ying Fu
- Laboratory of Molecular Biology, National Cancer Institute, Bethesda, MD, USA
| | - Mitchell Ho
- Laboratory of Molecular Biology, National Cancer Institute, Bethesda, MD, USA
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61
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Kinneer K, Meekin J, Tiberghien AC, Tai YT, Phipps S, Kiefer CM, Rebelatto MC, Dimasi N, Moriarty A, Papadopoulos KP, Sridhar S, Gregson SJ, Wick MJ, Masterson L, Anderson KC, Herbst R, Howard PW, Tice DA. SLC46A3 as a Potential Predictive Biomarker for Antibody–Drug Conjugates Bearing Noncleavable Linked Maytansinoid and Pyrrolobenzodiazepine Warheads. Clin Cancer Res 2018; 24:6570-6582. [DOI: 10.1158/1078-0432.ccr-18-1300] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/11/2018] [Accepted: 08/16/2018] [Indexed: 11/16/2022]
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62
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Cho S, Zammarchi F, Williams DG, Havenith CE, Monks NR, Tyrer P, D'Hooge F, Fleming R, Vashisht K, Dimasi N, Bertelli F, Corbett S, Adams L, Reinert HW, Dissanayake S, Britten CE, King W, Dacosta K, Tammali R, Schifferli K, Strout P, Korade M, Masson Hinrichs MJ, Chivers S, Corey E, Liu H, Kim S, Bander NH, Howard PW, Hartley JA, Coats S, Tice DA, Herbst R, van Berkel PH. Antitumor Activity of MEDI3726 (ADCT-401), a Pyrrolobenzodiazepine Antibody–Drug Conjugate Targeting PSMA, in Preclinical Models of Prostate Cancer. Mol Cancer Ther 2018; 17:2176-2186. [DOI: 10.1158/1535-7163.mct-17-0982] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 01/22/2018] [Accepted: 07/24/2018] [Indexed: 11/16/2022]
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63
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Zheng B, Yu SF, Del Rosario G, Leong SR, Lee GY, Vij R, Chiu C, Liang WC, Wu Y, Chalouni C, Sadowsky J, Clark V, Hendricks A, Poon KA, Chu W, Pillow T, Schutten MM, Flygare J, Polson AG. An Anti-CLL-1 Antibody-Drug Conjugate for the Treatment of Acute Myeloid Leukemia. Clin Cancer Res 2018; 25:1358-1368. [PMID: 29959143 DOI: 10.1158/1078-0432.ccr-18-0333] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 05/07/2018] [Accepted: 06/25/2018] [Indexed: 11/16/2022]
Abstract
PURPOSE The treatment of acute myeloid leukemia (AML) has not significantly changed in 40 years. Cytarabine- and anthracycline-based chemotherapy induction regimens (7 + 3) remain the standard of care, and most patients have poor long-term survival. The reapproval of Mylotarg, an anti-CD33-calicheamicin antibody-drug conjugate (ADC), has demonstrated ADCs as a clinically validated option to enhance the effectiveness of induction therapy. We are interested in developing a next-generation ADC for AML to improve upon the initial success of Mylotarg. EXPERIMENTAL DESIGN The expression pattern of CLL-1 and its hematopoietic potential were investigated. A novel anti-CLL-1-ADC, with a highly potent pyrrolobenzodiazepine (PBD) dimer conjugated through a self-immolative disulfide linker, was developed. The efficacy and safety profiles of this ADC were evaluated in mouse xenograft models and in cynomolgus monkeys. RESULTS We demonstrate that CLL-1 shares similar prevalence and trafficking properties that make CD33 an excellent ADC target for AML, but lacks expression on hematopoietic stem cells that hampers current CD33-targeted ADCs. Our anti-CLL-1-ADC is highly effective at depleting tumor cells in AML xenograft models and lacks target independent toxicities at doses that depleted target monocytes and neutrophils in cynomolgus monkeys. CONCLUSIONS Collectively, our data suggest that an anti-CLL-1-ADC has the potential to become an effective and safer treatment for AML in humans, by reducing and allowing for faster recovery from initial cytopenias than the current generation of ADCs for AML.
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Affiliation(s)
- Bing Zheng
- Research and Early Development, Genentech Inc., South San Francisco, California.
| | - Shang-Fan Yu
- Research and Early Development, Genentech Inc., South San Francisco, California
| | | | - Steven R Leong
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Genee Y Lee
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Rajesh Vij
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Cecilia Chiu
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Wei-Ching Liang
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Yan Wu
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Cecile Chalouni
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Jack Sadowsky
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Vanessa Clark
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Angela Hendricks
- Research and Early Development, Genentech Inc., South San Francisco, California
| | | | - Wayne Chu
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Thomas Pillow
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Melissa M Schutten
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - John Flygare
- Research and Early Development, Genentech Inc., South San Francisco, California
| | - Andrew G Polson
- Research and Early Development, Genentech Inc., South San Francisco, California.
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64
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Haque T, Rahman KM, Thurston DE, Hadgraft J, Lane ME. Topical delivery of anthramycin II. Influence of binary and ternary solvent systems. Eur J Pharm Sci 2018; 121:59-64. [PMID: 29746912 DOI: 10.1016/j.ejps.2018.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 05/01/2018] [Accepted: 05/06/2018] [Indexed: 10/17/2022]
Abstract
Anthramycin (ANT) is a member of the pyrolobenzodiazepine family and is a potent cytotoxic agent. Previously, we reported the topical delivery of ANT from a range of solvents that may also act as skin penetration enhancers (SPEs). The skin penetration and uptake was monitored for simple solutions of ANT in propylene glycol (PG), dipropylene glycol (DiPG), Transcutol P (TC), isopropyl myristate (IPM), propylene glycol monocaprylate (PGMC) and propylene glycol monolaurate (PGML). The amounts of PG, DiPG and TC that were taken up by, and that penetrated the skin were also measured, with a clear dependence of ANT penetration on the rate and extent of PG and TC permeation. The present work investigates ANT skin delivery from a range of binary and ternary systems to determine any potential improvement in skin uptake compared with earlier results for the neat solvents. Following miscibility and stability studies a total of eight formulations were taken forward for evaluation in human skin in vitro. Binary systems of PG and water did not result in any skin permeation of ANT. Combining PG with either PGMC or PGML did promote skin penetration of ANT but no significant improvement was evident compared with PG alone. More complex ternary systems based on PG, DiPG, PGMC, PGML and water also did not show significant improvements on ANT permeation, compared with single solvents. Total skin penetration and retention of ANT ranged from 1 to 6% across all formulations studied. Where ANT was delivered to the receptor phase there were also high amounts of PG permeation with >50% and ~35% PG present for the binary systems and ternary vehicles, respectively. These findings along with our previous paper confirm PG as a suitable solvent / SPE for ANT either alone or in combination with PGML or PGMC. The results also underline the necessity for empirical testing to determine whether or not a vehicle is acting as a SPE for a specific active in a topical formulation.
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Affiliation(s)
- Tasnuva Haque
- UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, United Kingdom
| | - Khondaker Miraz Rahman
- School of Cancer and Pharmaceutical Science, King's College London, 150 Stamford Street, London, SE1 9NH, United Kingdom
| | - David E Thurston
- School of Cancer and Pharmaceutical Science, King's College London, 150 Stamford Street, London, SE1 9NH, United Kingdom
| | - Jonathan Hadgraft
- UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, United Kingdom
| | - Majella E Lane
- UCL School of Pharmacy, 29-39 Brunswick Square, London WC1N 1AX, United Kingdom.
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65
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Bosco EE, Christie RJ, Carrasco R, Sabol D, Zha J, DaCosta K, Brown L, Kennedy M, Meekin J, Phipps S, Ayriss J, Du Q, Bezabeh B, Chowdhury P, Breen S, Chen C, Reed M, Hinrichs M, Zhong H, Xiao Z, Dixit R, Herbst R, Tice DA. Preclinical evaluation of a GFRA1 targeted antibody-drug conjugate in breast cancer. Oncotarget 2018; 9:22960-22975. [PMID: 29796165 PMCID: PMC5955426 DOI: 10.18632/oncotarget.25160] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 04/05/2018] [Indexed: 02/07/2023] Open
Abstract
Despite recent advances in treatment, breast cancer remains the second-most common cause of cancer death among American women. A greater understanding of the molecular characteristics of breast tumors could ultimately lead to improved tumor-targeted treatment options, particularly for subsets of breast cancer patients with unmet needs. Using an unbiased genomics approach to uncover membrane-localized tumor-associated antigens (TAAs), we have identified glial cell line derived neurotrophic factor (GDNF) family receptor α 1 (GFRA1) as a breast cancer TAA. Immunohistochemistry (IHC) revealed that GFRA1 displays a limited normal tissue expression profile coupled with overexpression in specific breast cancer subsets. The cell surface localization as determined by fluorescence-activated cell sorting (FACS) and the rapid internalization kinetics of GFRA1 makes it an ideal target for therapeutic exploitation as an antibody-drug conjugate (ADC). Here, we describe the development of a pyrrolobenzodiazepine (PBD)-armed, GFRA1-targeted ADC that demonstrates cytotoxicity in GFRA1-positive cell lines and patient-derived xenograft (PDX) models. The safety profile of the rat cross-reactive GFRA1-PBD was assessed in a rat toxicology study to find transient cellularity reductions in the bone marrow and peripheral blood, consistent with known off-target effects of PBD ADC's. These studies reveal no evidence of on-target toxicity and support further evaluation of GFRA1-PBD in GFRA1-positive tumors.
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Affiliation(s)
- Emily E. Bosco
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - R. James Christie
- Antibody Discovery and Protein Engineering, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Rosa Carrasco
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Darrin Sabol
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Jiping Zha
- Pathology, MedImmune, LLC, Gaithersburg, Maryland, United States of America
- Translational Sciences, NGM Biopharmaceuticals, South San Francisco, California, United States of America
| | - Karma DaCosta
- Pathology, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Lee Brown
- Pathology, MedImmune, Ltd, Cambridge, United Kingdom
| | - Maureen Kennedy
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - John Meekin
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Sandrina Phipps
- Antibody Discovery and Protein Engineering, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Joanne Ayriss
- Antibody Discovery and Protein Engineering, MedImmune, LLC, Gaithersburg, Maryland, United States of America
- Department of Global Biotherapeutics, Pfizer, Cambridge, Massachusetts, United States of America
| | - Qun Du
- Antibody Discovery and Protein Engineering, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Binyam Bezabeh
- Antibody Discovery and Protein Engineering, MedImmune, LLC, Gaithersburg, Maryland, United States of America
- Research, Salubris Biotherapeutics, Gaithersburg, Maryland, United States of America
| | - Partha Chowdhury
- Antibody Discovery and Protein Engineering, MedImmune, LLC, Gaithersburg, Maryland, United States of America
- Biologics Discovery, Sanofi Genzyme, Cambridge, MA, United States of America
| | - Shannon Breen
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Cui Chen
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Molly Reed
- Biologics Safety Assessment, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - MaryJane Hinrichs
- Biologics Safety Assessment, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Haihong Zhong
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Zhan Xiao
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Rakesh Dixit
- Biologics Safety Assessment, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - Ronald Herbst
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
| | - David A. Tice
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland, United States of America
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66
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Sakaine G, Smits G. Modified Julia–Kocienski Reagents for a Stereoselective Introduction of Trisubstituted Double Bonds: A Formal Total Synthesis of Limazepine E and Barmumycin. J Org Chem 2018; 83:5323-5330. [DOI: 10.1021/acs.joc.8b00643] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guna Sakaine
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
| | - Gints Smits
- Latvian Institute of Organic Synthesis, Aizkraukles 21, Riga LV-1006, Latvia
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67
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Nasiri H, Valedkarimi Z, Aghebati‐Maleki L, Majidi J. Antibody‐drug conjugates: Promising and efficient tools for targeted cancer therapy. J Cell Physiol 2018; 233:6441-6457. [DOI: 10.1002/jcp.26435] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 01/05/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Hadi Nasiri
- Immunology Research CenterTabriz University of Medical SciencesTabrizIran
- Department of ImmunologyFaculty of MedicineTabriz University of Medical SciencesTabrizIran
- Student Research CommitteeTabriz University of Medical SciencesTabrizIran
| | - Zahra Valedkarimi
- Immunology Research CenterTabriz University of Medical SciencesTabrizIran
- Department of ImmunologyFaculty of MedicineTabriz University of Medical SciencesTabrizIran
- Student Research CommitteeTabriz University of Medical SciencesTabrizIran
| | - Leili Aghebati‐Maleki
- Immunology Research CenterTabriz University of Medical SciencesTabrizIran
- Department of ImmunologyFaculty of MedicineTabriz University of Medical SciencesTabrizIran
| | - Jafar Majidi
- Immunology Research CenterTabriz University of Medical SciencesTabrizIran
- Department of ImmunologyFaculty of MedicineTabriz University of Medical SciencesTabrizIran
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68
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Zammarchi F, Corbett S, Adams L, Tyrer PC, Kiakos K, Janghra N, Marafioti T, Britten CE, Havenith CEG, Chivers S, D'Hooge F, Williams DG, Tiberghien A, Howard PW, Hartley JA, van Berkel PH. ADCT-402, a PBD dimer-containing antibody drug conjugate targeting CD19-expressing malignancies. Blood 2018; 131:1094-1105. [PMID: 29298756 DOI: 10.1182/blood-2017-10-813493] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 12/21/2017] [Indexed: 12/25/2022] Open
Abstract
Human CD19 antigen is a 95-kDa type I membrane glycoprotein in the immunoglobulin superfamily whose expression is limited to the various stages of B-cell development and differentiation and is maintained in the majority of B-cell malignancies, including leukemias and non-Hodgkin lymphomas of B-cell origin. Coupled with its differential and favorable expression profile, CD19 has rapid internalization kinetics and is not shed into the circulation, making it an ideal target for the development of antibody-drug conjugates (ADCs) to treat B-cell malignancies. ADCT-402 (loncastuximab tesirine) is a novel CD19-targeted ADC delivering SG3199, a highly cytotoxic DNA minor groove interstrand crosslinking pyrrolobenzodiazepine (PDB) dimer warhead. It showed potent and highly targeted in vitro cytotoxicity in CD19-expressing human cell lines. ADCT-402 was specifically bound, internalized, and trafficked to lysosomes in CD19-expressing cells and, following release of the PBD warhead, resulted in formation of DNA crosslinks that persisted for 36 hours. Bystander killing of CD19- cells by ADCT-402 was also observed. In vivo, single doses of ADCT-402 resulted in highly potent, dose-dependent antitumor activity in several subcutaneous and disseminated human tumor models with marked superiority to comparator ADCs delivering tubulin inhibitors. Dose-dependent DNA crosslinks and γ-H2AX DNA damage response were measured in tumors by 24 hours after single dose administration, whereas matched peripheral blood mononuclear cells showed no evidence of DNA damage. Pharmacokinetic analysis in rat and cynomolgus monkey showed excellent stability and tolerability of ADCT-402 in vivo. Together, these impressive data were used to support the clinical testing of this novel ADC in patients with CD19-expressing B-cell malignancies.
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MESH Headings
- Antigens, CD19/biosynthesis
- Antineoplastic Agents/pharmacokinetics
- Antineoplastic Agents/pharmacology
- Cell Line, Tumor
- Dose-Response Relationship, Drug
- Gene Expression Regulation, Leukemic
- Humans
- Immunoconjugates/pharmacokinetics
- Immunoconjugates/pharmacology
- Leukemia, B-Cell/drug therapy
- Leukemia, B-Cell/metabolism
- Leukemia, B-Cell/pathology
- Lymphoma, Non-Hodgkin/drug therapy
- Lymphoma, Non-Hodgkin/metabolism
- Lymphoma, Non-Hodgkin/pathology
- Lysosomes/metabolism
- Lysosomes/pathology
- Neoplasm Proteins/biosynthesis
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Affiliation(s)
| | - Simon Corbett
- Spirogen/Medimmune Ltd, London, United Kingdom; and
- Cancer Research UK Drug DNA Interactions Research Group and
| | - Lauren Adams
- Spirogen/Medimmune Ltd, London, United Kingdom; and
| | | | | | - Narinder Janghra
- Department of Pathology, University College London Cancer Institute, London, United Kingdom
| | - Teresa Marafioti
- Department of Pathology, University College London Cancer Institute, London, United Kingdom
| | | | | | - Simon Chivers
- ADC Therapeutics (UK) Limited, London, United Kingdom
| | | | | | | | | | - John A Hartley
- ADC Therapeutics (UK) Limited, London, United Kingdom
- Spirogen/Medimmune Ltd, London, United Kingdom; and
- Cancer Research UK Drug DNA Interactions Research Group and
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69
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Annor-Gyamfi JK, Jarrett JM, Osazee JO, Bialonska D, Whitted C, Palau VE, Shilabin AG. Synthesis and biological activity of fused tetracyclic Pyrrolo[2,1-c][1,4]benzodiazepines. Heliyon 2018; 4:e00539. [PMID: 29560454 PMCID: PMC5857631 DOI: 10.1016/j.heliyon.2018.e00539] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/24/2018] [Accepted: 02/07/2018] [Indexed: 11/25/2022] Open
Abstract
Cancer remains the second major cause of death in the world. Thus, there is a pressing need to identify potential synthetic route for the development of novel anticancer agents which will serve as lead compounds to effectively combat this life-threatening epidemic. Pyrrolo[2,1-c][1,4]benzodiazepines (PBDs) have sparked a great interest as lead compounds because of their cancerostatic and anti-infective properties. The twisted molecular structure of PBD analogs provides both helical and chiral elements. In an effort to expand novel PBDs that interact with the key exocyclic amino group of the DNA-guanine base, we hypothesized that construction of a fused cyclic active system, would likely serve as an electrophilic site when compared to traditional electrophilic C11-N10 imine group. To examine our theory, we report herein the synthesis and cell viability/cytotoxicity of a series of PBD analogs using NCI-60 cell lines screening. Thus, compounds 1–13 were synthesized and fully characterized. The selected PBDs were found to have marginal inhibition of growth, up to 30%, for certain cell lines.
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Affiliation(s)
- Joel K Annor-Gyamfi
- Department of Chemistry, College of Arts and Sciences, East Tennessee State University, TN, 37614, USA
| | - John M Jarrett
- Department of Chemistry, College of Arts and Sciences, East Tennessee State University, TN, 37614, USA
| | - Joseph O Osazee
- Department of Chemistry, College of Arts and Sciences, East Tennessee State University, TN, 37614, USA
| | - Dobrusia Bialonska
- Department of Biology, University of North Georgia, 82 College Cir, Dahlonega, GA, 30597, USA
| | - Crystal Whitted
- Department of Pharmaceutical Sciences, Gatton College of Pharmacy, ETSU, Johnson City, TN 37614, USA
| | - Victoria E Palau
- Department of Pharmaceutical Sciences, Gatton College of Pharmacy, ETSU, Johnson City, TN 37614, USA
| | - Abbas G Shilabin
- Department of Chemistry, College of Arts and Sciences, East Tennessee State University, TN, 37614, USA
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70
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Su D, Kozak KR, Sadowsky J, Yu SF, Fourie-O’Donohue A, Nelson C, Vandlen R, Ohri R, Liu L, Ng C, He J, Davis H, Lau J, Del Rosario G, Cosino E, Cruz-Chuh JD, Ma Y, Zhang D, Darwish M, Cai W, Chen C, Zhou H, Lu J, Liu Y, Kaur S, Xu K, Pillow TH. Modulating Antibody–Drug Conjugate Payload Metabolism by Conjugation Site and Linker Modification. Bioconjug Chem 2018; 29:1155-1167. [DOI: 10.1021/acs.bioconjchem.7b00785] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dian Su
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Katherine R. Kozak
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jack Sadowsky
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Shang-Fan Yu
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | | | - Christopher Nelson
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Richard Vandlen
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Rachana Ohri
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Luna Liu
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Carl Ng
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jintang He
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Helen Davis
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Jeff Lau
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Geoffrey Del Rosario
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Ely Cosino
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | | | - Yong Ma
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Donglu Zhang
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Martine Darwish
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Wenwen Cai
- Wuxi Biologics, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Chunjiao Chen
- Wuxi Biologics, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Hongxiang Zhou
- Wuxi Biologics, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Jiawei Lu
- Wuxi Biologics, 288 Fute Zhong Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Yichin Liu
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Surinder Kaur
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Keyang Xu
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Thomas H. Pillow
- Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, United States
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71
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Lucas AT, Price LSL, Schorzman AN, Storrie M, Piscitelli JA, Razo J, Zamboni WC. Factors Affecting the Pharmacology of Antibody-Drug Conjugates. Antibodies (Basel) 2018; 7:antib7010010. [PMID: 31544862 PMCID: PMC6698819 DOI: 10.3390/antib7010010] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/30/2018] [Accepted: 02/01/2018] [Indexed: 12/12/2022] Open
Abstract
Major advances in therapeutic proteins, including antibody–drug conjugates (ADCs), have created revolutionary drug delivery systems in cancer over the past decade. While these immunoconjugate agents provide several advantages compared to their small-molecule counterparts, their clinical use is still in its infancy. The considerations in their development and clinical use are complex, and consist of multiple components and variables that can affect the pharmacologic characteristics. It is critical to understand the mechanisms employed by ADCs in navigating biological barriers and how these factors affect their biodistribution, delivery to tumors, efficacy, and toxicity. Thus, future studies are warranted to better understand the complex pharmacology and interaction between ADC carriers and biological systems, such as the mononuclear phagocyte system (MPS) and tumor microenvironment. This review provides an overview of factors that affect the pharmacologic profiles of ADC therapies that are currently in clinical use and development.
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Affiliation(s)
- Andrew T Lucas
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
- UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Lauren S L Price
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Allison N Schorzman
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Mallory Storrie
- UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
| | | | - Juan Razo
- UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
| | - William C Zamboni
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
- UNC Eshelman School of Pharmacy, Chapel Hill, NC 27599, USA.
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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72
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Abás S, Arróniz C, Molins E, Escolano C. Access to the enantiopure pyrrolobenzodiazepine (PBD) dilactam nucleus via self-disproportionation of enantiomers. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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73
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LC–MS Challenges in Characterizing and Quantifying Monoclonal Antibodies (mAb) and Antibody-Drug Conjugates (ADC) in Biological Samples. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s40495-017-0118-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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74
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Vlahov IR, Qi L, Kleindl PJ, Santhapuram HK, Felten A, Parham GL, Wang K, You F, Vaughn JF, Hahn SJ, Klein HF, Vetzel M, Reddy JA, Nelson M, Nicoson J, Leamon CP. Latent Warheads for Targeted Cancer Therapy: Design and Synthesis of pro-Pyrrolobenzodiazepines and Conjugates. Bioconjug Chem 2017; 28:2921-2931. [PMID: 29211454 DOI: 10.1021/acs.bioconjchem.7b00476] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Iontcho R. Vlahov
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Longwu Qi
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Paul J. Kleindl
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Hari K. Santhapuram
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Albert Felten
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Garth L. Parham
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Kevin Wang
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Fei You
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Jeremy F. Vaughn
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Spencer J. Hahn
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Hanna F. Klein
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Marilynn Vetzel
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Joseph A. Reddy
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Melissa Nelson
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
| | - Jeff Nicoson
- Endocyte Inc., 3000 Kent Avenue, West Lafayette, Indiana 47906, United States
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75
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Donnell AF, Zhang Y, Stang EM, Wei DD, Tebben AJ, Perez HL, Schroeder GM, Pan C, Rao C, Borzilleri RM, Vite GD, Gangwar S. Macrocyclic pyrrolobenzodiazepine dimers as antibody-drug conjugate payloads. Bioorg Med Chem Lett 2017; 27:5267-5271. [DOI: 10.1016/j.bmcl.2017.10.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 10/12/2017] [Accepted: 10/14/2017] [Indexed: 01/21/2023]
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76
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The state-of-play and future of antibody therapeutics. Adv Drug Deliv Rev 2017; 122:2-19. [PMID: 27916504 DOI: 10.1016/j.addr.2016.11.004] [Citation(s) in RCA: 185] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 11/26/2016] [Accepted: 11/28/2016] [Indexed: 12/22/2022]
Abstract
It has been over four decades since the development of monoclonal antibodies (mAbs) using a hybridoma cell line was first reported. Since then more than thirty therapeutic antibodies have been marketed, mostly as oncology, autoimmune and inflammatory therapeutics. While antibodies are very efficient, their cost-effectiveness has always been discussed owing to their high costs, accumulating to more than one billion dollars from preclinical development through to market approval. Because of this, therapeutic antibodies are inaccessible to some patients in both developed and developing countries. The growing interest in biosimilar antibodies as affordable versions of therapeutic antibodies may provide alternative treatment options as well potentially decreasing costs. As certain markets begin to capitalize on this opportunity, regulatory authorities continue to refine the requirements for demonstrating quality, efficacy and safety of biosimilar compared to originator products. In addition to biosimilars, innovations in antibody engineering are providing the opportunity to design biobetter antibodies with improved properties to maximize efficacy. Enhancing effector function, antibody drug conjugates (ADC) or targeting multiple disease pathways via multi-specific antibodies are being explored. The manufacturing process of antibodies is also moving forward with advancements relating to host cell production and purification processes. Studies into the physical and chemical degradation pathways of antibodies are contributing to the design of more stable proteins guided by computational tools. Moreover, the delivery and pharmacokinetics of antibody-based therapeutics are improving as optimized formulations are pursued through the implementation of recent innovations in the field.
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77
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Gregson SJ, Masterson LA, Wei B, Pillow TH, Spencer SD, Kang GD, Yu SF, Raab H, Lau J, Li G, Lewis Phillips GD, Gunzner-Toste J, Safina BS, Ohri R, Darwish M, Kozak KR, Dela Cruz-Chuh J, Polson A, Flygare JA, Howard PW. Pyrrolobenzodiazepine Dimer Antibody-Drug Conjugates: Synthesis and Evaluation of Noncleavable Drug-Linkers. J Med Chem 2017; 60:9490-9507. [PMID: 29112410 DOI: 10.1021/acs.jmedchem.7b00736] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Three rationally designed pyrrolobenzodiazepine (PBD) drug-linkers have been synthesized via intermediate 19 for use in antibody-drug conjugates (ADCs). They lack a cleavable trigger in the linker and consist of a maleimide for cysteine antibody conjugation, a hydrophilic spacer, and either an alkyne (6), triazole (7), or piperazine (8) link to the PBD. In vitro IC50 values were 11-48 ng/mL in HER2 3+ SK-BR-3 and KPL-4 (7 inactive) for the anti-HER2 ADCs (HER2 0 MCF7, all inactive) and 0.10-1.73 μg/mL (7 inactive) in CD22 3+ BJAB and WSU-DLCL2 for anti-CD22 ADCs (CD22 0 Jurkat, all inactive at low doses). In vivo antitumor efficacy for the anti-HER2 ADCs in Founder 5 was observed with tumor stasis at 0.5-1 mg/kg, 1 mg/kg, and 3-6 mg/kg for 6, 8, and 7, respectively. Tumor stasis at 2 mg/kg was observed for anti-CD22 6 in WSU-DLCL2. In summary, noncleavable PBD-ADCs exhibit potent activity, particularly in HER2 models.
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Affiliation(s)
- Stephen J Gregson
- Spirogen , QMB Innovation Centre, 42 New Road, London E1 2AX, United Kingdom
| | - Luke A Masterson
- Spirogen , QMB Innovation Centre, 42 New Road, London E1 2AX, United Kingdom
| | - Binqing Wei
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Thomas H Pillow
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Susan D Spencer
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Gyoung-Dong Kang
- Spirogen , QMB Innovation Centre, 42 New Road, London E1 2AX, United Kingdom
| | - Shang-Fan Yu
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Helga Raab
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Jeffrey Lau
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Guangmin Li
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | | | - Janet Gunzner-Toste
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Brian S Safina
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Rachana Ohri
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Martine Darwish
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Katherine R Kozak
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | | | - Andrew Polson
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - John A Flygare
- Genentech, Inc. , 1 DNA Way, South San Francisco, California 94080, United States
| | - Philip W Howard
- Spirogen , QMB Innovation Centre, 42 New Road, London E1 2AX, United Kingdom
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78
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Dornisch E, Pletz J, Glabonjat RA, Martin F, Lembacher‐Fadum C, Neger M, Högenauer C, Francesconi K, Kroutil W, Zangger K, Breinbauer R, Zechner EL. Biosynthesis of the Enterotoxic Pyrrolobenzodiazepine Natural Product Tilivalline. Angew Chem Int Ed Engl 2017; 56:14753-14757. [PMID: 28977734 PMCID: PMC5698749 DOI: 10.1002/anie.201707737] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Indexed: 12/30/2022]
Abstract
The nonribosomal enterotoxin tilivalline was the first naturally occurring pyrrolobenzodiazepine to be linked to disease in the human intestine. Since the producing organism Klebsiella oxytoca is part of the intestinal microbiota and the pyrrolobenzodiazepine causes the pathogenesis of colitis it is important to understand the biosynthesis and regulation of tilivalline activity. Here we report the biosynthesis of tilivalline and show that this nonribosomal peptide assembly pathway initially generates tilimycin, a simple pyrrolobenzodiazepine with cytotoxic properties. Tilivalline results from the non-enzymatic spontaneous reaction of tilimycin with biogenetically generated indole. Through a chemical total synthesis of tilimycin we could corroborate the predictions made about the biosynthesis. Production of two cytotoxic pyrrolobenzodiazepines with distinct functionalities by human gut resident Klebsiella oxytoca has important implications for intestinal disease.
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Affiliation(s)
- Elisabeth Dornisch
- Institute of Molecular BiosciencesUniversity of GrazHumboldtstrasse 50/I8010GrazAustria
| | - Jakob Pletz
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 98010GrazAustria
- Institute of ChemistryUniversity of GrazHeinrichstrasse 28 & Universitätsplatz 18010GrazAustria
| | - Ronald A. Glabonjat
- Institute of ChemistryUniversity of GrazHeinrichstrasse 28 & Universitätsplatz 18010GrazAustria
| | - Florian Martin
- Institute of Molecular BiosciencesUniversity of GrazHumboldtstrasse 50/I8010GrazAustria
| | | | - Margit Neger
- Institute of Molecular BiosciencesUniversity of GrazHumboldtstrasse 50/I8010GrazAustria
| | - Christoph Högenauer
- Division of Gastroenterology and HepatologyDepartment of Internal MedicineMedical University of GrazAuenbruggerplatz 158036GrazAustria
| | - Kevin Francesconi
- Institute of ChemistryUniversity of GrazHeinrichstrasse 28 & Universitätsplatz 18010GrazAustria
| | - Wolfgang Kroutil
- Institute of ChemistryUniversity of GrazHeinrichstrasse 28 & Universitätsplatz 18010GrazAustria
| | - Klaus Zangger
- Institute of ChemistryUniversity of GrazHeinrichstrasse 28 & Universitätsplatz 18010GrazAustria
| | - Rolf Breinbauer
- Institute of Organic ChemistryGraz University of TechnologyStremayrgasse 98010GrazAustria
- BioTechMed-GrazAustria
| | - Ellen L. Zechner
- Institute of Molecular BiosciencesUniversity of GrazHumboldtstrasse 50/I8010GrazAustria
- BioTechMed-GrazAustria
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79
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Dornisch E, Pletz J, Glabonjat RA, Martin F, Lembacher-Fadum C, Neger M, Högenauer C, Francesconi K, Kroutil W, Zangger K, Breinbauer R, Zechner EL. Biosynthese des enterotoxischen Pyrrolobenzodiazepin-Naturstoffs Tilivallin. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Elisabeth Dornisch
- Institut für Molekulare Biowissenschaften; Karl-Franzens-Universität Graz; Humboldtstrasse 50/I 8010 Graz Österreich
| | - Jakob Pletz
- Institut für Organische Chemie; Technische Universität Graz; Stremayrgasse 9 8010 Graz Österreich
- Institut für Chemie; Karl-Franzens-Universität Graz; Heinrichstrasse 28 & Universitätsplatz 1 8010 Graz Österreich
| | - Ronald A. Glabonjat
- Institut für Chemie; Karl-Franzens-Universität Graz; Heinrichstrasse 28 & Universitätsplatz 1 8010 Graz Österreich
| | - Florian Martin
- Institut für Molekulare Biowissenschaften; Karl-Franzens-Universität Graz; Humboldtstrasse 50/I 8010 Graz Österreich
| | | | - Margit Neger
- Institut für Molekulare Biowissenschaften; Karl-Franzens-Universität Graz; Humboldtstrasse 50/I 8010 Graz Österreich
| | - Christoph Högenauer
- Klinische Abteilung für Gastroenterologie und Hepatologie, Universitätsklinik für Innere Medizin; Medizinische Universität Graz; Auenbruggerplatz 15 8036 Graz Österreich
| | - Kevin Francesconi
- Institut für Chemie; Karl-Franzens-Universität Graz; Heinrichstrasse 28 & Universitätsplatz 1 8010 Graz Österreich
| | - Wolfgang Kroutil
- Institut für Chemie; Karl-Franzens-Universität Graz; Heinrichstrasse 28 & Universitätsplatz 1 8010 Graz Österreich
| | - Klaus Zangger
- Institut für Chemie; Karl-Franzens-Universität Graz; Heinrichstrasse 28 & Universitätsplatz 1 8010 Graz Österreich
| | - Rolf Breinbauer
- Institut für Organische Chemie; Technische Universität Graz; Stremayrgasse 9 8010 Graz Österreich
- BioTechMed-Graz; Österreich
| | - Ellen L. Zechner
- Institut für Molekulare Biowissenschaften; Karl-Franzens-Universität Graz; Humboldtstrasse 50/I 8010 Graz Österreich
- BioTechMed-Graz; Österreich
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80
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Villela-Ma LM, Velez-Ayal AK, Lopez-Sanc RDC, Martinez-C JA, Hernandez- JA. Advantages of Drug Selective Distribution in Cancer Treatment: Brentuximab Vedotin. INT J PHARMACOL 2017. [DOI: 10.3923/ijp.2017.785.807] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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81
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82
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Kamenik Z, Kadlcik S, Gazak R, Vobruba S, Palanova L, Kuzma M, Janata J. Diversity of Alkylproline Moieties in Pyrrolobenzodiazepines Arises from Postcondensation Modifications of a Unified Building Block. ACS Chem Biol 2017; 12:1993-1998. [PMID: 28699733 DOI: 10.1021/acschembio.7b00335] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Anticancer pyrrolobenzodiazepines (PBDs) are one of several groups of natural products that contain unusual 4-alkyl-l-proline derivatives (APDs) in their structure. APD moieties of PBDs are characterized by high structural diversity achieved through unknown biosynthetic machinery. Based on LC-MS analysis of culture broths, feeding experiments, and protein assays, we show that APDs are not incorporated into PBDs in their final form as was previously hypothesized. Instead, a uniform building block, 4-propylidene-l-proline or 4-ethylidene-l-proline, enters the condensation reaction. The subsequent postcondensation steps are initiated by the introduction of an additional double bond catalyzed by a FAD-dependent oxidoreductase, which we demonstrated with Orf7 from anthramycin biosynthesis. The resulting double bond arrangement presumably represents a prerequisite for further modifications of the APD moieties. Our study gives general insight into the diversification of APD moieties of natural PBDs and provides proof-of-principle for precursor directed and combinatorial biosynthesis of new PBD-based antitumor compounds.
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Affiliation(s)
- Zdenek Kamenik
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Stanislav Kadlcik
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Radek Gazak
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Simon Vobruba
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Lucie Palanova
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Marek Kuzma
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
| | - Jiri Janata
- Institute of Microbiology, Czech Academy of Sciences, 142 20 Prague 4, Czech Republic
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83
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Sau S, Alsaab HO, Kashaw SK, Tatiparti K, Iyer AK. Advances in antibody-drug conjugates: A new era of targeted cancer therapy. Drug Discov Today 2017. [PMID: 28627385 DOI: 10.1016/j.drudis.2017.05.011] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Antibody-drug conjugates (ADCs), a potent class of anticancer therapeutics, comprise a high-affinity antibody (Ab) and cytotoxic payload coupled via a suitable linker for selective tumor cell killing. In the initial phase of their development, two ADCs, Mylotarg®, and Adcetris® were approved by the US Food and Drug Administration (FDA) for treating hematological cancer, but the real breakthrough came with the discovery of the breast cancer-targeting ADC, Kadcyla®. With advances in bioengineering, linker chemistry, and potent cytotoxic payload, ADC technology has become a more powerful tool for targeted cancer therapy. In addition, ADCs with improved safety using humanized Abs with a unified 'drug:antibody ratio' (DAR) have been achieved. Concomitantly, there has been a significant increase in the number of clinical trials with anticancer ADCs with high translation potential.
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Affiliation(s)
- Samaresh Sau
- Use-Inspired Biomaterials & Integrated Nano Delivery (U-BiND) Systems Laboratory, Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, 259 Mack Ave, Wayne State University, Detroit, MI 48201, USA
| | - Hashem O Alsaab
- Use-Inspired Biomaterials & Integrated Nano Delivery (U-BiND) Systems Laboratory, Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, 259 Mack Ave, Wayne State University, Detroit, MI 48201, USA; Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, Taif University, Taif 26571, Saudi Arabia
| | - Sushil Kumar Kashaw
- Use-Inspired Biomaterials & Integrated Nano Delivery (U-BiND) Systems Laboratory, Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, 259 Mack Ave, Wayne State University, Detroit, MI 48201, USA; Department of Pharmaceutical Sciences, Dr Harisingh Gour Central University, Sagar, MP 470003, India
| | - Katyayani Tatiparti
- Use-Inspired Biomaterials & Integrated Nano Delivery (U-BiND) Systems Laboratory, Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, 259 Mack Ave, Wayne State University, Detroit, MI 48201, USA
| | - Arun K Iyer
- Use-Inspired Biomaterials & Integrated Nano Delivery (U-BiND) Systems Laboratory, Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, 259 Mack Ave, Wayne State University, Detroit, MI 48201, USA; Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI 48201, USA.
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84
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Harper J, Lloyd C, Dimasi N, Toader D, Marwood R, Lewis L, Bannister D, Jovanovic J, Fleming R, D'Hooge F, Mao S, Marrero AM, Korade M, Strout P, Xu L, Chen C, Wetzel L, Breen S, van Vlerken-Ysla L, Jalla S, Rebelatto M, Zhong H, Hurt EM, Hinrichs MJ, Huang K, Howard PW, Tice DA, Hollingsworth RE, Herbst R, Kamal A. Preclinical Evaluation of MEDI0641, a Pyrrolobenzodiazepine-Conjugated Antibody-Drug Conjugate Targeting 5T4. Mol Cancer Ther 2017; 16:1576-1587. [PMID: 28522587 DOI: 10.1158/1535-7163.mct-16-0825] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 03/28/2017] [Accepted: 04/28/2017] [Indexed: 11/16/2022]
Abstract
Antibody-drug conjugates (ADC) are used to selectively deliver cytotoxic agents to tumors and have the potential for increased clinical benefit to cancer patients. 5T4 is an oncofetal antigen overexpressed on the cell surface in many carcinomas on both bulk tumor cells as well as cancer stem cells (CSC), has very limited normal tissue expression, and can internalize when bound by an antibody. An anti-5T4 antibody was identified and optimized for efficient binding and internalization in a target-specific manner, and engineered cysteines were incorporated into the molecule for site-specific conjugation. ADCs targeting 5T4 were constructed by site-specifically conjugating the antibody with payloads that possess different mechanisms of action, either a DNA cross-linking pyrrolobenzodiazepine (PBD) dimer or a microtubule-destabilizing tubulysin, so that each ADC had a drug:antibody ratio of 2. The resulting ADCs demonstrated significant target-dependent activity in vitro and in vivo; however, the ADC conjugated with a PBD payload (5T4-PBD) elicited more durable antitumor responses in vivo than the tubulysin conjugate in xenograft models. Likewise, the 5T4-PBD more potently inhibited the growth of 5T4-positive CSCs in vivo, which likely contributed to its superior antitumor activity. Given that the 5T4-PBD possessed both potent antitumor activity as well as anti-CSC activity, and thus could potentially target bulk tumor cells and CSCs in target-positive indications, it was further evaluated in non-GLP rat toxicology studies that demonstrated excellent in vivo stability with an acceptable safety profile. Taken together, these preclinical data support further development of 5T4-PBD, also known as MEDI0641, against 5T4+ cancer indications. Mol Cancer Ther; 16(8); 1576-87. ©2017 AACR.
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Affiliation(s)
- Jay Harper
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland.
| | - Christopher Lloyd
- Antibody Discovery and Protein Engineering, MedImmune, Ltd, Cambridge, United Kingdom
| | - Nazzareno Dimasi
- Antibody Discovery and Protein Engineering, MedImmune, LLC, Gaithersburg, Maryland
| | - Dorin Toader
- Antibody Discovery and Protein Engineering, MedImmune, LLC, Gaithersburg, Maryland
| | - Rose Marwood
- Antibody Discovery and Protein Engineering, MedImmune, Ltd, Cambridge, United Kingdom
| | - Leeanne Lewis
- Antibody Discovery and Protein Engineering, MedImmune, Ltd, Cambridge, United Kingdom
| | - David Bannister
- Antibody Discovery and Protein Engineering, MedImmune, Ltd, Cambridge, United Kingdom
| | - Jelena Jovanovic
- Antibody Discovery and Protein Engineering, MedImmune, Ltd, Cambridge, United Kingdom
| | - Ryan Fleming
- Antibody Discovery and Protein Engineering, MedImmune, LLC, Gaithersburg, Maryland
| | | | - Shenlan Mao
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | | | - Martin Korade
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | - Patrick Strout
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | - Linda Xu
- Antibody Discovery and Protein Engineering, MedImmune, LLC, Gaithersburg, Maryland
| | - Cui Chen
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | - Leslie Wetzel
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | - Shannon Breen
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | | | - Sanjoo Jalla
- Project Management, MedImmune, LLC, Gaithersburg, Maryland
| | | | - Haihong Zhong
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | - Elaine M Hurt
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | | | - Keven Huang
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | | | - David A Tice
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | | | - Ronald Herbst
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland
| | - Adeela Kamal
- Oncology Research, MedImmune, LLC, Gaithersburg, Maryland.,Ferring Pharmaceuticals, San Diego, California
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85
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Seaman S, Zhu Z, Saha S, Zhang XM, Yang MY, Hilton MB, Morris K, Szot C, Morris H, Swing DA, Tessarollo L, Smith SW, Degrado S, Borkin D, Jain N, Scheiermann J, Feng Y, Wang Y, Li J, Welsch D, DeCrescenzo G, Chaudhary A, Zudaire E, Klarmann KD, Keller JR, Dimitrov DS, St Croix B. Eradication of Tumors through Simultaneous Ablation of CD276/B7-H3-Positive Tumor Cells and Tumor Vasculature. Cancer Cell 2017; 31:501-515.e8. [PMID: 28399408 PMCID: PMC5458750 DOI: 10.1016/j.ccell.2017.03.005] [Citation(s) in RCA: 265] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 01/28/2017] [Accepted: 03/13/2017] [Indexed: 12/20/2022]
Abstract
Targeting the tumor vasculature with antibody-drug conjugates (ADCs) is a promising anti-cancer strategy that in order to be realized must overcome several obstacles, including identification of suitable targets and optimal warheads. Here, we demonstrate that the cell-surface protein CD276/B7-H3 is broadly overexpressed by multiple tumor types on both cancer cells and tumor-infiltrating blood vessels, making it a potentially ideal dual-compartment therapeutic target. In preclinical studies CD276 ADCs armed with a conventional MMAE warhead destroyed CD276-positive cancer cells, but were ineffective against tumor vasculature. In contrast, pyrrolobenzodiazepine-conjugated CD276 ADCs killed both cancer cells and tumor vasculature, eradicating large established tumors and metastases, and improving long-term overall survival. CD276-targeted dual-compartment ablation could aid in the development of highly selective broad-acting anti-cancer therapies.
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Affiliation(s)
- Steven Seaman
- Tumor Angiogenesis Unit, Mouse Cancer Genetics Program (MCGP), National Cancer Institute (NCI), NIH, Frederick, MD 21702, USA
| | - Zhongyu Zhu
- Protein Interactions Section, Cancer and Inflammation Program (CIP), NCI, NIH, Frederick, MD 21702, USA
| | - Saurabh Saha
- BioMed Valley Discoveries, Inc, Kansas City, MO 64111, USA
| | | | - Mi Young Yang
- Tumor Angiogenesis Unit, Mouse Cancer Genetics Program (MCGP), National Cancer Institute (NCI), NIH, Frederick, MD 21702, USA
| | - Mary Beth Hilton
- Tumor Angiogenesis Unit, Mouse Cancer Genetics Program (MCGP), National Cancer Institute (NCI), NIH, Frederick, MD 21702, USA; Basic Research Program, Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, NCI, Frederick, MD 21702, USA
| | - Karen Morris
- Tumor Angiogenesis Unit, Mouse Cancer Genetics Program (MCGP), National Cancer Institute (NCI), NIH, Frederick, MD 21702, USA; Basic Research Program, Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, NCI, Frederick, MD 21702, USA
| | - Christopher Szot
- Tumor Angiogenesis Unit, Mouse Cancer Genetics Program (MCGP), National Cancer Institute (NCI), NIH, Frederick, MD 21702, USA
| | - Holly Morris
- Transgenic Core Facility, MCGP, NCI, NIH, Frederick, MD 21702, USA
| | - Deborah A Swing
- Transgenic Core Facility, MCGP, NCI, NIH, Frederick, MD 21702, USA
| | - Lino Tessarollo
- Neural Development Section, MCGP, NCI, NIH, Frederick, MD 21702, USA
| | | | | | | | | | | | - Yang Feng
- Protein Interactions Section, Cancer and Inflammation Program (CIP), NCI, NIH, Frederick, MD 21702, USA
| | - Yanping Wang
- Protein Interactions Section, Cancer and Inflammation Program (CIP), NCI, NIH, Frederick, MD 21702, USA
| | - Jinyu Li
- Protein Interactions Section, Cancer and Inflammation Program (CIP), NCI, NIH, Frederick, MD 21702, USA
| | - Dean Welsch
- BioMed Valley Discoveries, Inc, Kansas City, MO 64111, USA
| | | | - Amit Chaudhary
- Tumor Angiogenesis Unit, Mouse Cancer Genetics Program (MCGP), National Cancer Institute (NCI), NIH, Frederick, MD 21702, USA
| | - Enrique Zudaire
- Tumor Angiogenesis Unit, Mouse Cancer Genetics Program (MCGP), National Cancer Institute (NCI), NIH, Frederick, MD 21702, USA
| | - Kimberly D Klarmann
- Basic Research Program, Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, NCI, Frederick, MD 21702, USA; Hematopoiesis and Stem Cell Biology Section, MCGP, NCI, NIH, Frederick, MD 21702, USA
| | - Jonathan R Keller
- Basic Research Program, Leidos Biomedical Research Inc., Frederick National Laboratory for Cancer Research, NCI, Frederick, MD 21702, USA; Hematopoiesis and Stem Cell Biology Section, MCGP, NCI, NIH, Frederick, MD 21702, USA
| | - Dimiter S Dimitrov
- Protein Interactions Section, Cancer and Inflammation Program (CIP), NCI, NIH, Frederick, MD 21702, USA
| | - Brad St Croix
- Tumor Angiogenesis Unit, Mouse Cancer Genetics Program (MCGP), National Cancer Institute (NCI), NIH, Frederick, MD 21702, USA.
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86
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Rios-Doria J, Harper J, Rothstein R, Wetzel L, Chesebrough J, Marrero A, Chen C, Strout P, Mulgrew K, McGlinchey K, Fleming R, Bezabeh B, Meekin J, Stewart D, Kennedy M, Martin P, Buchanan A, Dimasi N, Michelotti E, Hollingsworth R. Antibody-Drug Conjugates Bearing Pyrrolobenzodiazepine or Tubulysin Payloads Are Immunomodulatory and Synergize with Multiple Immunotherapies. Cancer Res 2017; 77:2686-2698. [PMID: 28283653 DOI: 10.1158/0008-5472.can-16-2854] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 11/15/2016] [Accepted: 03/02/2017] [Indexed: 11/16/2022]
Abstract
Immunogenic cell death (ICD) is the process by which certain cytotoxic drugs induce apoptosis of tumor cells in a manner that stimulates the immune system. In this study, we investigated whether antibody-drug conjugates (ADCS) conjugated with pyrrolobenzodiazepine dimer (PBD) or tubulysin payloads induce ICD, modulate the immune microenvironment, and could combine with immuno-oncology drugs to enhance antitumor activity. We show that these payloads on their own induced an immune response that prevented the growth of tumors following subsequent tumor cell challenge. ADCs had greater antitumor activity in immunocompetent versus immunodeficient mice, demonstrating a contribution of the immune system to the antitumor activity of these ADCs. ADCs also induced immunologic memory. In the CT26 model, depletion of CD8+ T cells abrogated the activity of ADCs when used alone or in combination with a PD-L1 antibody, confirming a role for T cells in antitumor activity. Combinations of ADCs with immuno-oncology drugs, including PD-1 or PD-L1 antibodies, OX40 ligand, or GITR ligand fusion proteins, produced synergistic antitumor responses. Importantly, synergy was observed in some cases with suboptimal doses of ADCs, potentially providing an approach to achieve potent antitumor responses while minimizing ADC-induced toxicity. Immunophenotyping studies in different tumor models revealed broad immunomodulation of lymphoid and myeloid cells by ADC and ADC/immuno-oncology combinations. These results suggest that it may be possible to develop novel combinatorial therapies with PBD- and tubulysin-based ADC and immuno-oncology drugs that may increase clinical responses. Cancer Res; 77(10); 2686-98. ©2017 AACR.
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Affiliation(s)
| | | | | | | | | | | | - Cui Chen
- MedImmune, Gaithersburg, Maryland
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87
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Lee MTW, Maruani A, Richards DA, Baker JR, Caddick S, Chudasama V. Enabling the controlled assembly of antibody conjugates with a loading of two modules without antibody engineering. Chem Sci 2017; 8:2056-2060. [PMID: 28451324 PMCID: PMC5399535 DOI: 10.1039/c6sc03655d] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 11/24/2016] [Indexed: 12/12/2022] Open
Abstract
The generation of antibody conjugates with a loading of two modules is desirable for a host of reasons. Whilst certain antibody engineering approaches have been useful in the preparation of such constructs, a reliable method based on a native antibody scaffold without the use of enzymes or harsh oxidative conditions has hitherto not been achieved. The use of native antibodies has several advantages in terms of cost, practicality, accessibility, time and overall efficiency. Herein we present a novel, reliable method of furnishing antibody conjugates with a loading of two modules starting from a native antibody scaffold.
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Affiliation(s)
- Maximillian T W Lee
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ; Tel: +44 (0)207 679 2077
| | - Antoine Maruani
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ; Tel: +44 (0)207 679 2077
| | - Daniel A Richards
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ; Tel: +44 (0)207 679 2077
| | - James R Baker
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ; Tel: +44 (0)207 679 2077
| | - Stephen Caddick
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ; Tel: +44 (0)207 679 2077
| | - Vijay Chudasama
- Department of Chemistry , University College London , 20 Gordon Street , London , WC1H 0AJ , UK . ; Tel: +44 (0)207 679 2077
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88
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Novel linkers and connections for antibody-drug conjugates to treat cancer and infectious disease. Pharm Pat Anal 2017; 6:25-33. [PMID: 28155578 DOI: 10.4155/ppa-2016-0032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Antibody-drug conjugates (ADCs) are an exciting therapeutic, combining the extreme potency of a small molecule cytotoxic drug with the exquisite selectivity of a monoclonal antibody. Despite the promising concept and many decades of research and clinical experiments, only two ADCs are approved for human use. Among the lessons learned, have been the need for highly stable and potentially releasable linkers and the empirical nature of therapeutic index supporting the testing of many diverse cytotoxics, many requiring new linker connections for the drug's available functional groups. This article will focus on our efforts at Genentech to develop a new disulfide linker as well as our discovery of a novel quaternary ammonium salt linker connection and the application to ADCs for cancer and infectious disease.
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89
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Jackson PJ, Rahman KM, Thurston DE. The use of molecular dynamics simulations to evaluate the DNA sequence-selectivity of G–A cross-linking PBD–duocarmycin dimers. Bioorg Med Chem Lett 2017; 27:102-108. [DOI: 10.1016/j.bmcl.2016.10.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 10/06/2016] [Accepted: 10/09/2016] [Indexed: 10/20/2022]
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90
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Zhang D, Pillow TH, Ma Y, Cruz-Chuh JD, Kozak KR, Sadowsky JD, Lewis Phillips GD, Guo J, Darwish M, Fan P, Chen J, He C, Wang T, Yao H, Xu Z, Chen J, Wai J, Pei Z, Hop CECA, Khojasteh SC, Dragovich PS. Linker Immolation Determines Cell Killing Activity of Disulfide-Linked Pyrrolobenzodiazepine Antibody-Drug Conjugates. ACS Med Chem Lett 2016; 7:988-993. [PMID: 27882196 DOI: 10.1021/acsmedchemlett.6b00233] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 08/22/2016] [Indexed: 11/29/2022] Open
Abstract
Disulfide bonds could be valuable linkers for a variety of therapeutic applications requiring tunable cleavage between two parts of a molecule (e.g., antibody-drug conjugates). The in vitro linker immolation of β-mercaptoethyl-carbamate disulfides and DNA alkylation properties of associated payloads were investigated to understand the determinant of cell killing potency of anti-CD22 linked pyrrolobenzodiazepine (PBD-dimer) conjugates. Efficient immolation and release of a PBD-dimer with strong DNA alkylation properties were observed following disulfide cleavage of methyl- and cyclobutyl-substituted disulfide linkers. However, the analogous cyclopropyl-containing linker did not immolate, and the associated thiol-containing product was a poor DNA alkylator. As predicted from these in vitro assessments, the related anti-CD22 ADCs showed different target-dependent cell killing activities in WSU-DLCL2 and BJAB cell lines. These results demonstrate how the in vitro immolation models can be used to help design efficacious ADCs.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Jingtian Chen
- Wuxi Apptec, 288 Fute Zhong
Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Changrong He
- Wuxi Apptec, 288 Fute Zhong
Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Tao Wang
- Wuxi Apptec, 288 Fute Zhong
Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Hui Yao
- Wuxi Apptec, 288 Fute Zhong
Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Zijin Xu
- Wuxi Apptec, 288 Fute Zhong
Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - Jinhua Chen
- Wuxi Apptec, 288 Fute Zhong
Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
| | - John Wai
- Wuxi Apptec, 288 Fute Zhong
Road, Waigaoqiao Free Trade Zone, Shanghai 200131, China
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91
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Tiberghien AC, Levy JN, Masterson LA, Patel NV, Adams LR, Corbett S, Williams DG, Hartley JA, Howard PW. Design and Synthesis of Tesirine, a Clinical Antibody-Drug Conjugate Pyrrolobenzodiazepine Dimer Payload. ACS Med Chem Lett 2016; 7:983-987. [PMID: 27882195 PMCID: PMC5108040 DOI: 10.1021/acsmedchemlett.6b00062] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 05/24/2016] [Indexed: 11/28/2022] Open
Abstract
Pyrrolobenzodiazepine dimers are an emerging class of warhead in the field of antibody-drug conjugates (ADCs). Tesirine (SG3249) was designed to combine potent antitumor activity with desirable physicochemical properties such as favorable hydrophobicity and improved conjugation characteristics. One of the reactive imines was capped with a cathepsin B-cleavable valine-alanine linker. A robust synthetic route was developed to allow the production of tesirine on clinical scale, employing a flexible, convergent strategy. Tesirine was evaluated in vitro both in stochastic and engineered ADC constructs and was confirmed as a potent and versatile payload. The conjugation of tesirine to anti-DLL3 rovalpituzumab has resulted in rovalpituzumab-tesirine (Rova-T), currently under evaluation for the treatment of small cell lung cancer.
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Affiliation(s)
| | | | | | - Neki V. Patel
- QMB Innovation
Centre, Spirogen, 42 New Road, E1 2AX London, U.K.
| | - Lauren R. Adams
- QMB Innovation
Centre, Spirogen, 42 New Road, E1 2AX London, U.K.
| | - Simon Corbett
- QMB Innovation
Centre, Spirogen, 42 New Road, E1 2AX London, U.K.
| | | | - John A. Hartley
- QMB Innovation
Centre, Spirogen, 42 New Road, E1 2AX London, U.K.
| | - Philip W. Howard
- QMB Innovation
Centre, Spirogen, 42 New Road, E1 2AX London, U.K.
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92
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Tsuchikama K, An Z. Antibody-drug conjugates: recent advances in conjugation and linker chemistries. Protein Cell 2016; 9:33-46. [PMID: 27743348 PMCID: PMC5777969 DOI: 10.1007/s13238-016-0323-0] [Citation(s) in RCA: 426] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 08/06/2016] [Indexed: 01/11/2023] Open
Abstract
The antibody-drug conjugate (ADC), a humanized or human monoclonal antibody conjugated with highly cytotoxic small molecules (payloads) through chemical linkers, is a novel therapeutic format and has great potential to make a paradigm shift in cancer chemotherapy. This new antibody-based molecular platform enables selective delivery of a potent cytotoxic payload to target cancer cells, resulting in improved efficacy, reduced systemic toxicity, and preferable pharmacokinetics (PK)/pharmacodynamics (PD) and biodistribution compared to traditional chemotherapy. Boosted by the successes of FDA-approved Adcetris® and Kadcyla®, this drug class has been rapidly growing along with about 60 ADCs currently in clinical trials. In this article, we briefly review molecular aspects of each component (the antibody, payload, and linker) of ADCs, and then mainly discuss traditional and new technologies of the conjugation and linker chemistries for successful construction of clinically effective ADCs. Current efforts in the conjugation and linker chemistries will provide greater insights into molecular design and strategies for clinically effective ADCs from medicinal chemistry and pharmacology standpoints. The development of site-specific conjugation methodologies for constructing homogeneous ADCs is an especially promising path to improving ADC design, which will open the way for novel cancer therapeutics.
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Affiliation(s)
- Kyoji Tsuchikama
- Texas Therapeutics Institute, The Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA.
| | - Zhiqiang An
- Texas Therapeutics Institute, The Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, TX, 77054, USA
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93
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Zhang D, Yu SF, Ma Y, Xu K, Dragovich PS, Pillow TH, Liu L, Del Rosario G, He J, Pei Z, Sadowsky JD, Erickson HK, Hop CECA, Khojasteh SC. Chemical Structure and Concentration of Intratumor Catabolites Determine Efficacy of Antibody Drug Conjugates. Drug Metab Dispos 2016; 44:1517-23. [PMID: 27417182 PMCID: PMC4998580 DOI: 10.1124/dmd.116.070631] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 07/08/2016] [Indexed: 11/22/2022] Open
Abstract
Despite recent technological advances in quantifying antibody drug conjugate (ADC) species, such as total antibody, conjugated antibody, conjugated drug, and payload drug in circulation, the correlation of their exposures with the efficacy of ADC outcomes in vivo remains challenging. Here, the chemical structures and concentrations of intratumor catabolites were investigated to better understand the drivers of ADC in vivo efficacy. Anti-CD22 disulfide-linked pyrrolobenzodiazepine (PBD-dimer) conjugates containing methyl- and cyclobutyl-substituted disulfide linkers exhibited strong efficacy in a WSU-DLCL2 xenograft mouse model, whereas an ADC derived from a cyclopropyl linker was inactive. Total ADC antibody concentrations and drug-to-antibody ratios (DAR) in circulation were similar between the cyclobutyl-containing ADC and the cyclopropyl-containing ADC; however, the former afforded the release of the PBD-dimer payload in the tumor, but the latter only generated a nonimmolating thiol-containing catabolite that did not bind to DNA. These results suggest that intratumor catabolite analysis rather than systemic pharmacokinetic analysis may be used to better explain and predict ADC in vivo efficacy. These are good examples to demonstrate that the chemical nature and concentration of intratumor catabolites depend on the linker type used for drug conjugation, and the potency of the released drug moiety ultimately determines the ADC in vivo efficacy.
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Affiliation(s)
- Donglu Zhang
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Shang-Fan Yu
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Yong Ma
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Keyang Xu
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Peter S Dragovich
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Thomas H Pillow
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Luna Liu
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Geoffrey Del Rosario
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Jintang He
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Zhonghua Pei
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Jack D Sadowsky
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Hans K Erickson
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - Cornelis E C A Hop
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
| | - S Cyrus Khojasteh
- Drug Metabolism and Pharmacokinetics (D.Z., Y.M., C.E.C.A.H, S.C.K.), Translational Oncology (S.Y., G.D.R.), BioAnalytical Sciences (K.X., L.L., J.H.), Discovery Chemistry (P.S.D., T.H.P., Z.P.), Protein Chemistry (J.D.S., H.K.E.), Genentech, South San Francisco, California
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94
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Abstract
Antibody drug conjugates (ADCs) constitute a family of cancer therapeutics designed to preferentially direct a cytotoxic drug to cells expressing a cell-surface antigen recognized by an antibody. The antibody and drug are linked through chemistries that enable release of the cytotoxic drug or drug adduct upon internalization and digestion of the ADC by the cell. Over 40 distinct ADCs, targeting an array of antigens and utilizing a variety of drugs and linkers, are undergoing clinical evaluation. This review primarily covers ADCs that have advanced to clinical investigation with a particular emphasis on how the individual targets, linker chemistries, and appended drugs influence their behavior.
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Affiliation(s)
- Paul Polakis
- Department of Molecular Oncology, Genentech, South San Francisco, California
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95
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Antibody-Drug Conjugates for Cancer Therapy. Biomedicines 2016; 4:biomedicines4030014. [PMID: 28536381 PMCID: PMC5344263 DOI: 10.3390/biomedicines4030014] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 06/24/2016] [Accepted: 06/27/2016] [Indexed: 11/18/2022] Open
Abstract
Antibody–drug conjugates (ADCs) take advantage of the specificity of a monoclonal antibody to deliver a linked cytotoxic agent directly into a tumour cell. The development of these compounds provides exciting opportunities for improvements in patient care. Here, we review the key issues impacting on the clinical success of ADCs in cancer therapy. Like many other developing therapeutic classes, there remain challenges in the design and optimisation of these compounds. As the clinical applications for ADCs continue to expand, key strategies to improve patient outcomes include better patient selection for treatment and the identification of mechanisms of therapy resistance.
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96
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Tearing down to build up: Metalloenzymes in the biosynthesis lincomycin, hormaomycin and the pyrrolo [1,4]benzodiazepines. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2016; 1864:724-737. [DOI: 10.1016/j.bbapap.2016.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 02/24/2016] [Accepted: 03/02/2016] [Indexed: 11/21/2022]
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97
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New developments for antibody-drug conjugate-based therapeutic approaches. Curr Opin Immunol 2016; 40:14-23. [DOI: 10.1016/j.coi.2016.02.008] [Citation(s) in RCA: 195] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 02/23/2016] [Accepted: 02/23/2016] [Indexed: 01/05/2023]
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98
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Brucoli F, Guzman JD, Basher MA, Evangelopoulos D, McMahon E, Munshi T, McHugh TD, Fox KR, Bhakta S. DNA sequence-selective C8-linked pyrrolobenzodiazepine–heterocyclic polyamide conjugates show anti-tubercular-specific activities. J Antibiot (Tokyo) 2016; 69:843-849. [DOI: 10.1038/ja.2016.43] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 02/29/2016] [Accepted: 03/14/2016] [Indexed: 02/07/2023]
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99
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Currier NV, Ackerman SE, Kintzing JR, Chen R, Filsinger Interrante M, Steiner A, Sato AK, Cochran JR. Targeted Drug Delivery with an Integrin-Binding Knottin-Fc-MMAF Conjugate Produced by Cell-Free Protein Synthesis. Mol Cancer Ther 2016; 15:1291-300. [PMID: 27197305 DOI: 10.1158/1535-7163.mct-15-0881] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 03/17/2016] [Indexed: 11/16/2022]
Abstract
Antibody-drug conjugates (ADC) have generated significant interest as targeted therapeutics for cancer treatment, demonstrating improved clinical efficacy and safety compared with systemic chemotherapy. To extend this concept to other tumor-targeting proteins, we conjugated the tubulin inhibitor monomethyl-auristatin-F (MMAF) to 2.5F-Fc, a fusion protein composed of a human Fc domain and a cystine knot (knottin) miniprotein engineered to bind with high affinity to tumor-associated integrin receptors. The broad expression of integrins (including αvβ3, αvβ5, and α5β1) on tumor cells and their vasculature makes 2.5F-Fc an attractive tumor-targeting protein for drug delivery. We show that 2.5F-Fc can be expressed by cell-free protein synthesis, during which a non-natural amino acid was introduced into the Fc domain and subsequently used for site-specific conjugation of MMAF through a noncleavable linker. The resulting knottin-Fc-drug conjugate (KFDC), termed 2.5F-Fc-MMAF, had approximately 2 drugs attached per KFDC. 2.5F-Fc-MMAF inhibited proliferation in human glioblastoma (U87MG), ovarian (A2780), and breast (MB-468) cancer cells to a greater extent than 2.5F-Fc or MMAF alone or added in combination. As a single agent, 2.5F-Fc-MMAF was effective at inducing regression and prolonged survival in U87MG tumor xenograft models when administered at 10 mg/kg two times per week. In comparison, tumors treated with 2.5F-Fc or MMAF were nonresponsive, and treatment with a nontargeted control, CTRL-Fc-MMAF, showed a modest but not significant therapeutic effect. These studies provide proof-of-concept for further development of KFDCs as alternatives to ADCs for tumor targeting and drug delivery applications. Mol Cancer Ther; 15(6); 1291-300. ©2016 AACR.
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Affiliation(s)
- Nicolas V Currier
- Division of Pediatric Hematology/Oncology, Stanford Medical School, Stanford, California
| | | | - James R Kintzing
- Department of Bioengineering, Stanford University, Stanford, California
| | - Rishard Chen
- Sutro Biopharma, Inc., South San Francisco, California
| | | | | | - Aaron K Sato
- Sutro Biopharma, Inc., South San Francisco, California
| | - Jennifer R Cochran
- Department of Bioengineering, Stanford University, Stanford, California. Department of Chemical Engineering, Stanford University, Stanford, California.
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100
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Varvounis G. An Update on the Synthesis of Pyrrolo[1,4]benzodiazepines. Molecules 2016; 21:154. [PMID: 26828475 PMCID: PMC6273195 DOI: 10.3390/molecules21020154] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 12/23/2015] [Accepted: 01/05/2016] [Indexed: 01/12/2023] Open
Abstract
Pyrrolo[1,4]benzodiazepines are tricyclic compounds that are considered “privileged structures” since they possess a wide range of biological activities. The first encounter with these molecules was the isolation of anthramycin from cultures of Streptomyces, followed by determination of the X-ray crystal structure of the molecule and a study of its interaction with DNA. This opened up an intensive synthetic and biological study of the pyrrolo[2,1-c][1,4]benzodiazepines that has culminated in the development of the dimer SJG-136, at present in Phase II clinical trials. The synthetic efforts have brought to light some new synthetic methodology, while the contemporary work is focused on building trimeric pyrrolo[2,1-c][1,4]benzodiazepines linked together by various heterocyclic and aliphatic chains. It is the broad spectrum of biological activities of pyrrolo[1,2-a][1,4]benzodiazepines that has maintained the interest of researchers to date whereas several derivatives of the even less studied pyrrolo[1,2-d][1,4]benzodiazepines were found to be potent non-nucleoside HIV-1 reverse transcriptase inhibitors. The present review is an update on the synthesis of pyrrolo[2,1-c][1,4]benzodiazepines since the last major review of 2011, while the overview of the synthesis of the other two tricyclic isomers is comprehensive.
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Affiliation(s)
- George Varvounis
- Department of Chemistry, Section of Organic Chemistry and Biochemistry, University of Ioannina, 451 10 Ioannina, Greece.
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