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Hwang J, Strange N, Mazraani R, Phillips MJ, Gamble AB, Huston WM, Tyndall JDA. Design, synthesis and biological evaluation of P2-modified proline analogues targeting the HtrA serine protease in Chlamydia. Eur J Med Chem 2021; 230:114064. [PMID: 35007862 DOI: 10.1016/j.ejmech.2021.114064] [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: 10/21/2021] [Revised: 12/07/2021] [Accepted: 12/18/2021] [Indexed: 11/19/2022]
Abstract
High temperature requirement A (HtrA) serine proteases have emerged as a novel class of antibacterial target, which are crucial in protein quality control and are involved in the pathogenesis of a wide array of bacterial infections. Previously, we demonstrated that HtrA in Chlamydia is essential for bacterial survival, replication and virulence. Here, we report a new series of proline (P2)-modified inhibitors of Chlamydia trachomatis HtrA (CtHtrA) developed by proline ring expansion and Cγ-substitutions. The structure-based drug optimization process was guided by molecular modelling and in vitro pharmacological evaluation of inhibitory potency, selectivity and cytotoxicity. Compound 25 from the first-generation 4-substituted proline analogues increased antiCtHtrA potency and selectivity over human neutrophil elastase (HNE) by approximately 6- and 12-fold, respectively, relative to the peptidic lead compound 1. Based on this compound, second-generation substituted proline residues containing 1,2,3-triazole moieties were synthesized by regioselective azide-alkyne click chemistry. Compound 49 demonstrated significantly improved antichlamydial activity in whole cell assays, diminishing the bacterial infectious progeny below the detection limit at the lowest dose tested. Compound 49 resulted in approximately 9- and 22-fold improvement in the inhibitory potency and selectivity relative to 1, respectively. To date, compound 49 is the most potent HtrA inhibitor developed against Chlamydia spp.
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Affiliation(s)
- Jimin Hwang
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - Natalie Strange
- School of Life Sciences, Faculty of Science, University of Technology Sydney, New South Wales, Australia
| | - Rami Mazraani
- School of Life Sciences, Faculty of Science, University of Technology Sydney, New South Wales, Australia
| | - Matthew J Phillips
- School of Life Sciences, Faculty of Science, University of Technology Sydney, New South Wales, Australia
| | - Allan B Gamble
- School of Pharmacy, University of Otago, Dunedin, New Zealand.
| | - Wilhelmina M Huston
- School of Life Sciences, Faculty of Science, University of Technology Sydney, New South Wales, Australia.
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Decombat C, Duval O, Besson T, Bourel L, Pudlo M. A skills framework integrating professionally relevant medicinal chemistry proficiencies to strengthen the contemporary practice of pharmacy. ANNALES PHARMACEUTIQUES FRANÇAISES 2021; 80:176-186. [PMID: 34314680 DOI: 10.1016/j.pharma.2021.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 06/18/2021] [Accepted: 07/19/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Our aim was to define a repository of competences in Medicinal Chemistry, to be developed during Pharmacy studies and expected in professional practices, while highlighting the fundamental character of the subject and its interdisciplinary links within the Pharmaceutical Sciences. METHODS A first version, based on both our professional and educational experience, consolidated by a review of educational articles and good practice guidelines, was obtained by following a competency-based approach. It was then completed by Medicinal Chemistry teachers in various French Pharmacy Faculties to obtain a comprehensive data set. The final version was reviewed in the light of relevant comments from 15 experts from related disciplines. RESULTS A comprehensive competency framework with extensive practical applications was developed. CONCLUSIONS This pilot study provides a teaching repository for medicinal chemistry for use by teachers of medicinal sciences. It highlights the fundamental role of the discipline within Pharmacy studies and provides links with professional practices. This repository will be useful to various teaching teams in a context of integrated disciplines and could be replicated in related disciplines.
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Affiliation(s)
- C Decombat
- AFECT Association française des Enseignants de Chimie Thérapeutique (French Association of Medicinal Chemistry Teachers), Paris, France; Université Clermont-Auvergne, INRA, UNH, Unité de Nutrition Humaine, CRNH Auvergne, 63000 Clermont-Ferrand, France
| | - O Duval
- AFECT Association française des Enseignants de Chimie Thérapeutique (French Association of Medicinal Chemistry Teachers), Paris, France; MINT - UMR INSERM U1066/UMR CNRS 6021, IBS-CHU ANGERS, 4, rue Larrey, 49933 Angers cedex 9, France
| | - T Besson
- AFECT Association française des Enseignants de Chimie Thérapeutique (French Association of Medicinal Chemistry Teachers), Paris, France; Normandie Univ, UNIROUEN, INSA Rouen, CNRS, COBRA UMR 6014, 76000 Rouen, France
| | - L Bourel
- AFECT Association française des Enseignants de Chimie Thérapeutique (French Association of Medicinal Chemistry Teachers), Paris, France; UMR 7199 CNRS/Unistra, 3Bio team/ITI InnoVec, Faculté de Pharmacie, 74, route du Rhin, 67400 Illkirch, France.
| | - M Pudlo
- AFECT Association française des Enseignants de Chimie Thérapeutique (French Association of Medicinal Chemistry Teachers), Paris, France; PEPITE EA4267, University Bourgogne Franche-Comté, 19, rue Ambroise Paré, 25000 Besançon, France.
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Philip A, Stephens M, Mitchell SL, Watkins EB. Design and implementation of a laboratory-based drug design and synthesis advanced pharmacy practice experience. AMERICAN JOURNAL OF PHARMACEUTICAL EDUCATION 2015; 79:43. [PMID: 25995518 PMCID: PMC4428428 DOI: 10.5688/ajpe79343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 08/03/2014] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To provide students with an opportunity to participate in medicinal chemistry research within the doctor of pharmacy (PharmD) curriculum. DESIGN We designed and implemented a 3-course sequence in drug design or drug synthesis for pharmacy students consisting of a 1-month advanced elective followed by two 1-month research advanced pharmacy practice experiences (APPEs). To maximize student involvement, this 3-course sequence was offered to third-year and fourth-year students twice per calendar year. ASSESSMENT Students were evaluated based on their commitment to the project's success, productivity, and professionalism. Students also evaluated the course sequence using a 14-item course evaluation rubric. Student feedback was overwhelmingly positive. Students found the experience to be a valuable component of their pharmacy curriculum. CONCLUSION We successfully designed and implemented a 3-course research sequence that allows PharmD students in the traditional 4-year program to participate in drug design and synthesis research. Students report the sequence enhanced their critical-thinking and problem-solving skills and helped them develop as independent learners. Based on the success achieved with this sequence, efforts are underway to develop research APPEs in other areas of the pharmaceutical sciences.
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Affiliation(s)
- Ashok Philip
- Union University School of Pharmacy, Jackson, Tennessee
| | - Mark Stephens
- Union University School of Pharmacy, Jackson, Tennessee
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Regulska K, Stanisz B, Regulski M, Murias M. How to design a potent, specific, and stable angiotensin-converting enzyme inhibitor. Drug Discov Today 2014; 19:1731-1743. [PMID: 24997281 DOI: 10.1016/j.drudis.2014.06.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 06/24/2014] [Accepted: 06/25/2014] [Indexed: 10/25/2022]
Abstract
Angiotensin-converting enzyme inhibitors (ACE-Is) are a valuable class of antihypertensive drugs used in the treatment of cardiovascular system-related diseases. Hence, constant research into, and the development of, such compounds remain within the priorities of modern medical sciences. In this respect, a thorough understanding of their chemistry and biology is an important aspect of drug design; therefore, we present here available data on the pharmaceutical properties of ACE-Is. We also review the structural and biochemical features of the molecular target of ACE-Is and demonstrate several known enzyme-inhibitor complexes. Finally, we attempt to create a mathematical model describing the relation between the potency and/or stability of ACE-Is and their structural characteristics using quantitative structure-activity relation (QSAR), and quantitative structure-property relation (QSPR) techniques.
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Affiliation(s)
- Katarzyna Regulska
- Poznan University of Medical Sciences, Chair and Department of Pharmaceutical Chemistry, 6th Grunwaldzka Street, 60-780 Poznan, Poland; Greater Poland Oncology Center, 15th Garbary Street, 61-866 Poznań, Poland
| | - Beata Stanisz
- Poznan University of Medical Sciences, Chair and Department of Pharmaceutical Chemistry, 6th Grunwaldzka Street, 60-780 Poznan, Poland.
| | - Miłosz Regulski
- Poznan University of Medical Sciences, Chair and Department of Toxicology, 30th Dojazd Street, 60-631 Poznan, Poland
| | - Marek Murias
- Poznan University of Medical Sciences, Chair and Department of Toxicology, 30th Dojazd Street, 60-631 Poznan, Poland
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El Sayed KA, Chelette CT. Laboratory exercises to teach clinically relevant chemistry of antibiotics. AMERICAN JOURNAL OF PHARMACEUTICAL EDUCATION 2014; 78:37. [PMID: 24672070 PMCID: PMC3965145 DOI: 10.5688/ajpe78237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 08/26/2013] [Indexed: 06/01/2023]
Abstract
OBJECTIVES To design, implement, and evaluate student performance on clinically relevant chemical and spectral laboratory exercises on antibiotics. DESIGN In the first of 2 exercises, second-year pharmacy students enrolled in an integrated laboratory sequence course studied the aqueous stability of ß-lactam antibiotics using a spectral visual approach. In a second exercise, students studied the tendency of tetracycline, rifamycins, and fluoroquinolones to form insoluble chelate complexes (turbidity) with polyvalent metals. ASSESSMENT On a survey to assess achievement of class learning objectives, students agreed the laboratory activities helped them better retain important information concerning antibiotic stability and interactions. A significant improvement was observed in performance on examination questions related to the laboratory topics for 2012 and 2013 students compared to 2011 students who did not complete the laboratory. A 1-year follow-up examination question administered in a separate course showed >75% of the students were able to identify rifamycins-food interactions compared with <25% of students who had not completed the laboratory exercises. CONCLUSION The use of spectral visual approaches allowed students to investigate antibiotic stability and interactions, thus reinforcing the clinical relevance of medicinal chemistry. Students' performance on questions at the 1-year follow-up suggested increased retention of the concepts learned as a result of completing the exercises.
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Affiliation(s)
- Khalid A El Sayed
- School of Pharmacy, University of Louisiana at Monroe, Monroe, Louisiana
| | - Candace T Chelette
- School of Pharmacy, University of Louisiana at Monroe, Monroe, Louisiana
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Addla D, Jallapally A, Kanwal A, Sridhar B, Banerjee SK, Kantevari S. Design, synthesis and evaluation of novel 2-hydroxypyrrolobenzodiazepine-5,11-dione analogues as potent angiotensin converting enzyme (ACE) inhibitors. Bioorg Med Chem 2013; 21:4485-93. [DOI: 10.1016/j.bmc.2013.05.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 05/20/2013] [Accepted: 05/21/2013] [Indexed: 12/19/2022]
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