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Diethelm-Varela B, Ai Y, Liang D, Xue F. Nitrogen Mustards as Anticancer Chemotherapies: Historic Perspective, Current Developments and Future Trends. Curr Top Med Chem 2019; 19:691-712. [PMID: 30931858 DOI: 10.2174/1568026619666190401100519] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/11/2019] [Accepted: 02/25/2019] [Indexed: 12/30/2022]
Abstract
Nitrogen mustards, a family of DNA alkylating agents, marked the start of cancer pharmacotherapy. While traditionally characterized by their dose-limiting toxic effects, nitrogen mustards have been the subject of intense research efforts, which have led to safer and more effective agents. Even though the alkylating prodrug mustards were first developed decades ago, active research on ways to improve their selectivity and cytotoxic efficacy is a currently active topic of research. This review addresses the historical development of the nitrogen mustards, outlining their mechanism of action, and discussing the improvements on their therapeutic profile made through rational structure modifications. A special emphasis is made on discussing the nitrogen mustard prodrug category, with Cyclophosphamide (CPA) serving as the main highlight. Selected insights on the latest developments on nitrogen mustards are then provided, limiting such information to agents that preserve the original nitrogen mustard mechanism as their primary mode of action. Additionally, future trends that might follow in the quest to optimize these invaluable chemotherapeutic medications are succinctly suggested.
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Affiliation(s)
- Benjamin Diethelm-Varela
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, Maryland 21201, United States
| | - Yong Ai
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, Maryland 21201, United States
| | - Dongdong Liang
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, Maryland 21201, United States
| | - Fengtian Xue
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, Maryland 21201, United States
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Gothwal A, Khan I, Kumar P, Raza K, Kaul A, Mishra AK, Gupta U. Bendamustine-PAMAM Conjugates for Improved Apoptosis, Efficacy, and in Vivo Pharmacokinetics: A Sustainable Delivery Tactic. Mol Pharm 2018; 15:2084-2097. [PMID: 29195048 DOI: 10.1021/acs.molpharmaceut.7b00625] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Successful delivery of a chemotherapeutic agent like bendamustine still remains a challenge in clinical conditions like chronic lymphatic leukemia (CLL), non-Hodgkin lymphoma (NHL), and multiple myeloma. We have conjugated bendamustine to polyamidoamine (PAMAM) dendrimers after conjugating with N-(hydroxyethyl)maleimide (spacer) via an ester bond. The particle size of PAMAM-bendamustine conjugate was 49.8 ± 2.5 nm. In vitro drug release resulted in sustained release with improved solution stability of drug up to 72 h. In a 24 h cytotoxicity study by MTT assay against human monoblastic leukemia cells (THP-1), the IC50 value for PAMAM-bendamustine was 32.1 ± 4.8 μM compared to 50.42 ± 3.4 μM and 2303 ± 106.5 μM for bendamustine and PAMAM dendrimer, respectively. Significantly higher cell uptake and apoptosis were observed in THP-1 cells by PAMAM-bendamustine conjugate which was confirmed by flow cytometry and confocal laser scanning microscopy. Preliminary in vivo studies undertaken included pharmacokinetics studies, organ distribution studies, and tumor inhibition studies. In healthy Wistar rat model (1CBM IV push model), the pharmacokinetic studies revealed that bioavailability and t1/2 increased significantly, i.e., almost 8.5-fold (193.8 ± 1.116 vs 22.8 ± 0.158 μg mL-1/h) and 5.1-fold (0.75 ± 0.005 vs 3.85 ± 0.015 h), respectively, for PAMAM-bendamustine conjugate compared to pure bendamustine ( p < 0.05), however, clearance and volume of distribution were found to be decreased compared to those of free drug. The study suggests that PAMAM-bendamustine conjugate was not only stable for the longer period but also least toxic and highly taken up by THP-1 cells to exert an anticancer effect at the reduced dose. Tumor inhibition and biodistribution studies in tumor-bearing BALB/c mice revealed that PAMAM-bendamustine conjugate was more effective than the pure drug and showed higher accumulation in the tumor.
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Affiliation(s)
- Avinash Gothwal
- Department of Pharmacy, School of Chemical Sciences and Pharmacy , Central University of Rajasthan , Bandarsindri, Ajmer , Rajasthan 305817 , India
| | - Iliyas Khan
- Department of Pharmacy, School of Chemical Sciences and Pharmacy , Central University of Rajasthan , Bandarsindri, Ajmer , Rajasthan 305817 , India
| | - Pramod Kumar
- Department of Pharmacy, School of Chemical Sciences and Pharmacy , Central University of Rajasthan , Bandarsindri, Ajmer , Rajasthan 305817 , India
| | - Kaisar Raza
- Department of Pharmacy, School of Chemical Sciences and Pharmacy , Central University of Rajasthan , Bandarsindri, Ajmer , Rajasthan 305817 , India
| | - Ankur Kaul
- Division of Cyclotron And Radiopharmaceutical sciences , Institute of Nuclear Medicine and Allied Sciences , New Delhi 110054 , India
| | - Anil Kumar Mishra
- Division of Cyclotron And Radiopharmaceutical sciences , Institute of Nuclear Medicine and Allied Sciences , New Delhi 110054 , India
| | - Umesh Gupta
- Department of Pharmacy, School of Chemical Sciences and Pharmacy , Central University of Rajasthan , Bandarsindri, Ajmer , Rajasthan 305817 , India
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Retreatment with Bendamustine-Bortezomib-Dexamethasone in a Patient with Relapsed/Refractory Multiple Myeloma. Case Rep Hematol 2016; 2016:6745286. [PMID: 27867671 PMCID: PMC5102715 DOI: 10.1155/2016/6745286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 10/12/2016] [Indexed: 11/17/2022] Open
Abstract
The clinical management of relapsed/refractory multiple myeloma and the correct choice of the most suitable therapy in heavily pretreated and fragile patients are tough clinical issues for clinicians. In advanced phases of disease, the choice of available therapies becomes very poor, and the retreatment with previously adopted and effective therapy, although unpredictable, could be an effective option. In this report, we describe the clinical history of a patient, previously treated with 9 lines of therapy, refractory to bortezomib and IMIDs, for whom the retreatment with bendamustine resulted in a stable disease with good quality of life.
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Huber S, Huettner JP, Hacker K, Bernhardt G, König J, Buschauer A. Esters of Bendamustine Are by Far More Potent Cytotoxic Agents than the Parent Compound against Human Sarcoma and Carcinoma Cells. PLoS One 2015. [PMID: 26196503 PMCID: PMC4721923 DOI: 10.1371/journal.pone.0133743] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The alkylating agent bendamustine is approved for the treatment of hematopoietic malignancies such as non-Hodgkin lymphoma, chronic lymphocytic leukemia and multiple myeloma. As preliminary data on recently disclosed bendamustine esters suggested increased cytotoxicity, we investigated representative derivatives in more detail. Especially basic esters, which are positively charged under physiological conditions, were in the crystal violet and the MTT assay up to approximately 100 times more effective than bendamustine, paralleled by a higher fraction of early apoptotic cancer cells and increased expression of p53. Analytical studies performed with bendamustine and representative esters revealed pronounced cellular accumulation of the derivatives compared to the parent compound. In particular, the pyrrolidinoethyl ester showed a high enrichment in tumor cells and inhibition of OCT1- and OCT3-mediated transport processes, suggesting organic cation transporters to be involved. However, this hypothesis was not supported by the differential expression of OCT1 (SLC22A1) and OCT3 (SLC22A3), comparing a panel of human cancer cells. Bendamustine esters proved to be considerably more potent cytotoxic agents than the parent compound against a broad panel of human cancer cell types, including hematologic and solid malignancies (e.g. malignant melanoma, colorectal carcinoma and lung cancer), which are resistant to bendamustine. Interestingly, spontaneously immortalized human keratinocytes, as a model of “normal” cells, were by far less sensitive than tumor cells against the most potent bendamustine esters.
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Affiliation(s)
- Stefan Huber
- Pharmaceutical and Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Johannes Philip Huettner
- Pharmacology and Toxicology, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Kristina Hacker
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Günther Bernhardt
- Pharmaceutical and Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Jörg König
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Armin Buschauer
- Pharmaceutical and Medicinal Chemistry II, Institute of Pharmacy, University of Regensburg, Regensburg, Germany
- * E-mail:
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Musto P, Fraticelli VL, Mansueto G, Madonna E, Nozza A, Andriani A, Mussetti A, Ballanti S, Bongarzoni V, Baraldi A, Patriarca F, Vincelli D, Falcone A, Derudas D, Califano C, Zambello R, Mele G, Fragasso A, Baldini L, Storti S. Bendamustine in relapsed/refractory multiple myeloma: the "real-life" side of the moon. Leuk Lymphoma 2015; 56:1510-3. [PMID: 25651428 DOI: 10.3109/10428194.2014.982644] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Pellegrino Musto
- Scientific Direction, IRCCS-CROB, Centro di Riferimento Oncologico della Basilicata , Rionero in Vulture , Italy
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Rodon P, Hulin C, Pegourie B, Tiab M, Anglaret B, Benboubker L, Jardel H, Decaux O, Kolb B, Roussel M, Garderet L, Leleu X, Fitoussi O, Chaleteix C, Casassus P, Lenain P, Royer B, Banos A, Benramdane R, Cony-Makhoul P, Dib M, Fontan J, Stoppa AM, Traullé C, Vilque JP, Pétillon MO, Mathiot C, Dejoie T, Avet-Loiseau H, Moreau P. Phase II study of bendamustine, bortezomib and dexamethasone as second-line treatment for elderly patients with multiple myeloma: the Intergroupe Francophone du Myelome 2009-01 trial. Haematologica 2014; 100:e56-9. [PMID: 25398832 DOI: 10.3324/haematol.2014.110890] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Laurent Garderet
- Hôpital St Antoine, Assistance Publique-Hôpitaux de Paris, Paris
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