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Fan S, Bai Y, Li Q, Liu L, Wang Y, Xie F, Dong Y, Wang Z, Lv K, Zhu H, Bi H, Zhou X. Novel antibody-antibiotic conjugate using KRM-1657 as payload eliminates intracellular MRSA in vitro and in vivo. Bioorg Chem 2024; 150:107532. [PMID: 38852312 DOI: 10.1016/j.bioorg.2024.107532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/27/2024] [Accepted: 06/03/2024] [Indexed: 06/11/2024]
Abstract
Staphylococcus aureus is considered to be an extracellular pathogen. However, survival of S.aureus within host cells may cause long-term colonization and clinical failure. Current treatments have poor efficacy in clearing intracellular bacteria. Antibody-antibiotic conjugates (AACs) is a novel strategy for eliminating intracellular bacteria. Herein, we use KRM-1657 as payload of AAC for the first time, and we conjugate it with anti S. aureus antibody via a dipeptide linker (Valine-Alanine) to obtain a novel AAC (ASAK-22). The ASAK-22 exhibits good in vitro pharmacokinetic properties and inhibitory activity against intracellular MRSA, with 100 μg/mL of ASAK-22 capable of eliminating intracellular MRSA to the detection limit. Furthermore, the in vivo results demonstrate that a single administration of ASAK-22 significantly reduces the bacterial burden in the bacteremia model, which is superior to the vancomycin treatment.
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Affiliation(s)
- Shiyong Fan
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Yuefan Bai
- Department of Pathogenic Biology, Nanjing Medical University, Nanjing 210029, China
| | - Qilong Li
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China; Department of Pharmaceutical Analysis, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, China
| | - Lianqi Liu
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Yanming Wang
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Fei Xie
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Yuchao Dong
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Zihao Wang
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | - Kai Lv
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - He Zhu
- Department of Pharmaceutical Analysis, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, China; Department of Metabolomics, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing 210028, China.
| | - Hongkai Bi
- Department of Pathogenic Biology, Nanjing Medical University, Nanjing 210029, China.
| | - Xinbo Zhou
- National Engineering Research Center for the Emergency Drug, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
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Ahad A, K. Saeed H, del Solar V, López-Hernández JE, Michel A, Mathew J, Lewis JS, Contel M. Shifting the Antibody-Drug Conjugate Paradigm: A Trastuzumab-Gold-Based Conjugate Demonstrates High Efficacy against Human Epidermal Growth Factor Receptor 2-Positive Breast Cancer Mouse Model. ACS Pharmacol Transl Sci 2023; 6:1972-1986. [PMID: 38093840 PMCID: PMC10714425 DOI: 10.1021/acsptsci.3c00270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/08/2023] [Accepted: 11/10/2023] [Indexed: 01/17/2024]
Abstract
Antibody-drug conjugates (ADCs) combine the selectivity of monoclonal antibodies (mAbs) with the efficacy of chemotherapeutics to target cancers without toxicity to normal tissue. Clinically, most chemotherapeutic ADCs are based on complex organic molecules, while the conjugation of metallodrugs to mAbs has been overlooked, despite the resurgent interest in metal-based drugs as cancer chemotherapeutics. In 2019, we described the first gold ADCs containing gold-triphenylphosphane fragments as a proof of concept. The ADCs (based on the antibody trastuzumab) were selective and highly active against HER2-positive breast cancer cells. In this study, we developed site-specific ADCs (Thio-1b and Thio-2b) using the cysteine-engineered trastuzumab derivative THIOMAB antibody technology with gold(I)-containing phosphanes and a maleimide-based linker amenable to bioconjugation (1b and 2b). In addition, we developed lysine-directed ADCs with gold payloads based on phosphanes and N-heterocyclic carbenes featuring an activated ester moiety (2c and 5c) with trastuzumab (Tras-2c and Tras-5c) and another anti-HER2 antibody, pertuzumab (Per-2c and Per-5c). Both sets of ADCs demonstrated significant anticancer potency in vitro assays. Based on these results, one ADC (Tras-2c), containing the [Au(PEt3)] fragment present in FDA-approved auranofin, was selected for an in vivo antitumor efficacy study. Immunocompromised mice xenografted with the HER2-positive human cancer cell line SKBR-3 exhibited almost complete tumor reduction and low toxicity with intravenous administration of Tras-2c. With this highly selective targeting system, we demonstrated that a subnanomolar cytotoxicity profile in cells is not required for an impressive antitumor effect in a mouse xenograft model.
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Affiliation(s)
- Afruja Ahad
- Department
of Chemistry, The City University of New
York, Brooklyn, New York 11210, United States
- Brooklyn
College Cancer Center, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
- Biology
PhD Programs, The Graduate Center, The City
University of New York, New York, New York 10016, United States
- Department
of Radiology, Memorial Sloan Kettering Cancer
Center, New York, New York 10065, United States
| | - Hiwa K. Saeed
- Department
of Chemistry, The City University of New
York, Brooklyn, New York 11210, United States
- Brooklyn
College Cancer Center, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
| | - Virginia del Solar
- Department
of Chemistry, The City University of New
York, Brooklyn, New York 11210, United States
- Brooklyn
College Cancer Center, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
| | - Javier E. López-Hernández
- Department
of Chemistry, The City University of New
York, Brooklyn, New York 11210, United States
- Brooklyn
College Cancer Center, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
- Biochemistry
PhD Programs, The Graduate Center, The City
University of New York, New York, New York 10016, United States
| | - Alexa Michel
- Department
of Radiology, Memorial Sloan Kettering Cancer
Center, New York, New York 10065, United States
| | - Joshua Mathew
- Department
of Chemistry, The City University of New
York, Brooklyn, New York 11210, United States
| | - Jason S. Lewis
- Department
of Radiology, Memorial Sloan Kettering Cancer
Center, New York, New York 10065, United States
- Molecular
Pharmacology Program, Memorial Sloan Kettering
Cancer Center, New York, New York 10065, United States
- Radiochemistry
and Molecular Imaging Probes Core, Memorial
Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Maria Contel
- Department
of Chemistry, The City University of New
York, Brooklyn, New York 11210, United States
- Brooklyn
College Cancer Center, Brooklyn College, The City University of New York, Brooklyn, New York 11210, United States
- Biology
PhD Programs, The Graduate Center, The City
University of New York, New York, New York 10016, United States
- Chemistry
PhD Programs, The Graduate Center, The City
University of New York, New York, New York 10016, United States
- Biochemistry
PhD Programs, The Graduate Center, The City
University of New York, New York, New York 10016, United States
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