1
|
Parmar KR, Lukka PB, Wagh S, Temrikar ZH, Liu J, Lee RE, Braunstein M, Hickey AJ, Robertson GT, Gonzalez-Juarrero M, Edginton A, Meibohm B. Development of a Minimalistic Physiologically Based Pharmacokinetic (mPBPK) Model for the Preclinical Development of Spectinamide Antibiotics. Pharmaceutics 2023; 15:1759. [PMID: 37376207 DOI: 10.3390/pharmaceutics15061759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/11/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
Spectinamides 1599 and 1810 are lead spectinamide compounds currently under preclinical development to treat multidrug-resistant (MDR) and extensively drug-resistant (XDR) tuberculosis. These compounds have previously been tested at various combinations of dose level, dosing frequency, and route of administration in mouse models of Mycobacterium tuberculosis (Mtb) infection and in healthy animals. Physiologically based pharmacokinetic (PBPK) modeling allows the prediction of the pharmacokinetics of candidate drugs in organs/tissues of interest and extrapolation of their disposition across different species. Here, we have built, qualified, and refined a minimalistic PBPK model that can describe and predict the pharmacokinetics of spectinamides in various tissues, especially those relevant to Mtb infection. The model was expanded and qualified for multiple dose levels, dosing regimens, routes of administration, and various species. The model predictions in mice (healthy and infected) and rats were in reasonable agreement with experimental data, and all predicted AUCs in plasma and tissues met the two-fold acceptance criteria relative to observations. To further explore the distribution of spectinamide 1599 within granuloma substructures as encountered in tuberculosis, we utilized the Simcyp granuloma model combined with model predictions in our PBPK model. Simulation results suggest substantial exposure in all lesion substructures, with particularly high exposure in the rim area and macrophages. The developed model may be leveraged as an effective tool in identifying optimal dose levels and dosing regimens of spectinamides for further preclinical and clinical development.
Collapse
Affiliation(s)
- Keyur R Parmar
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Pradeep B Lukka
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Santosh Wagh
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Zaid H Temrikar
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Jiuyu Liu
- Department of Chemical Biology, St. Jude Children's Hospital, Memphis, TN 38105, USA
| | - Richard E Lee
- Department of Chemical Biology, St. Jude Children's Hospital, Memphis, TN 38105, USA
| | - Miriam Braunstein
- Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Anthony J Hickey
- Technology Advancement and Commercialization, RTI International, Durham, NC 27709, USA
| | - Gregory T Robertson
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523, USA
| | - Mercedes Gonzalez-Juarrero
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523, USA
| | - Andrea Edginton
- School of Pharmacy, University of Waterloo, Waterloo, ON N2G 1C5, Canada
| | - Bernd Meibohm
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| |
Collapse
|
2
|
Luo G, Chen L, Kostich WA, Hamman B, Allen J, Easton A, Bourin C, Gulianello M, Lippy J, Nara S, Pattipati SN, Dandapani K, Dokania M, Vattikundala P, Sharma V, Elavazhagan S, Verma MK, Lal Das M, Wagh S, Balakrishnan A, Johnson BM, Santone KS, Thalody G, Denton R, Saminathan H, Holenarsipur VK, Kumar A, Rao A, Putlur SP, Sarvasiddhi SK, Shankar G, Louis JV, Ramarao M, Conway CM, Li YW, Pieschl R, Tian Y, Hong Y, Bristow L, Albright CF, Bronson JJ, Macor JE, Dzierba CD. Discovery and Optimization of Biaryl Alkyl Ethers as a Novel Class of Highly Selective, CNS-Penetrable, and Orally Active Adaptor Protein-2-Associated Kinase 1 (AAK1) Inhibitors for the Potential Treatment of Neuropathic Pain. J Med Chem 2022; 65:4534-4564. [PMID: 35261239 DOI: 10.1021/acs.jmedchem.1c02132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Recent mouse knockout studies identified adapter protein-2-associated kinase 1 (AAK1) as a viable target for treating neuropathic pain. BMS-986176/LX-9211 (4), as a highly selective, CNS-penetrable, and potent AAK1 inhibitor, has advanced into phase II human trials. On exploring the structure-activity relationship (SAR) around this biaryl alkyl ether chemotype, several additional compounds were found to be highly selective and potent AAK1 inhibitors with good druglike properties. Among these, compounds 43 and 58 showed very good efficacy in two neuropathic pain rat models and had excellent CNS penetration and spinal cord target engagement. Both compounds also exhibited favorable physicochemical and oral pharmacokinetic (PK) properties. Compound 58, a central pyridine isomer of BMS-986176/LX-9211 (4), was 4-fold more potent than 4 in vitro and showed lower plasma exposure needed to achieve similar efficacy compared to 4 in the CCI rat model. However, both 43 and 58 showed an inferior preclinical toxicity profile compared to 4.
Collapse
Affiliation(s)
- Guanglin Luo
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Ling Chen
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Walter A Kostich
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Brian Hamman
- Lexicon Pharmaceuticals, 8800 Technology Forest Place, The Woodlands, Texas 77381, United States
| | - Jason Allen
- Lexicon Pharmaceuticals, 8800 Technology Forest Place, The Woodlands, Texas 77381, United States
| | - Amy Easton
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Clotilde Bourin
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Michael Gulianello
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Jonathan Lippy
- Department of Lead Evaluation, Bristol Myers Squibb Company, Route 206 & Province Line Rd, Princeton, New Jersey 08543, United States
| | - Susheel Nara
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Sreenivasulu Naidu Pattipati
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Kumaran Dandapani
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Manoj Dokania
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Pradeep Vattikundala
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Vivek Sharma
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Saravanan Elavazhagan
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Manoj Kumar Verma
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Manish Lal Das
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Santosh Wagh
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Anand Balakrishnan
- Department of Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Benjamin M Johnson
- Department of Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Kenneth S Santone
- Department of Pharmaceutical Candidate Optimization, Bristol Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - George Thalody
- Discovery Toxicology, Bristol Myers Squibb Company, Route 206 & Province Line Rd, Princeton, New Jersey 08543, United States
| | - Rex Denton
- Discovery Toxicology, Bristol Myers Squibb Company, Route 206 & Province Line Rd, Princeton, New Jersey 08543, United States
| | - Hariharan Saminathan
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Vinay K Holenarsipur
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Anoop Kumar
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Abhijith Rao
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Siva Prasad Putlur
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Sarat Kumar Sarvasiddhi
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Ganesh Shankar
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Justin V Louis
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Manjunath Ramarao
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 & 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Charles M Conway
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Yu-Wen Li
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Rick Pieschl
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Yuan Tian
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Yang Hong
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Linda Bristow
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Charles F Albright
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Joanne J Bronson
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - John E Macor
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Carolyn D Dzierba
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| |
Collapse
|
3
|
Luo G, Chen L, Kostich WA, Hamman B, Allen J, Easton A, Bourin C, Gulianello M, Lippy J, Nara S, Maishal TK, Thiyagarajan K, Jalagam P, Pattipati SN, Dandapani K, Dokania M, Vattikundala P, Sharma V, Elavazhagan S, Verma MK, Das ML, Wagh S, Balakrishnan A, Johnson BM, Santone KS, Thalody G, Denton R, Saminathan H, Holenarsipur VK, Kumar A, Rao A, Putlur SP, Sarvasiddhi SK, Shankar G, Louis JV, Ramarao M, Conway CM, Li YW, Pieschl R, Tian Y, Hong Y, Ditta J, Mathur A, Li J, Smith D, Pawluczyk J, Sun D, Yip S, Wu DR, Vetrichelvan M, Gupta A, Wilson A, Gopinathan S, Wason S, Bristow L, Albright CF, Bronson JJ, Macor JE, Dzierba CD. Discovery of ( S)-1-((2',6-Bis(difluoromethyl)-[2,4'-bipyridin]-5-yl)oxy)-2,4-dimethylpentan-2-amine (BMS-986176/LX-9211): A Highly Selective, CNS Penetrable, and Orally Active Adaptor Protein-2 Associated Kinase 1 Inhibitor in Clinical Trials for the Treatment of Neuropathic Pain. J Med Chem 2022; 65:4457-4480. [PMID: 35257579 DOI: 10.1021/acs.jmedchem.1c02131] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Recent mouse knockout studies identified adapter protein-2 associated kinase 1 (AAK1) as a viable target for treating neuropathic pain. Potent small-molecule inhibitors of AAK1 have been identified and show efficacy in various rodent pain models. (S)-1-((2',6-Bis(difluoromethyl)-[2,4'-bipyridin]-5-yl)oxy)-2,4-dimethylpentan-2-amine (BMS-986176/LX-9211) (34) was identified as a highly selective, CNS penetrant, potent AAK1 inhibitor from a novel class of bi(hetero)aryl ethers. BMS-986176/LX9211 (34) showed excellent efficacy in two rodent neuropathic pain models and excellent central nervous system (CNS) penetration and target engagement at the spinal cord with an average brain to plasma ratio of 20 in rat. The compound exhibited favorable physicochemical and pharmacokinetic properties, had an acceptable preclinical toxicity profile, and was chosen for clinical trials. BMS-986176/LX9211 (34) completed phase I trials with good human pharmacokinetics and minimum adverse events and is currently in phase II clinical trials for diabetic peripheral neuropathic pain (ClinicalTrials.gov identifier: NCT04455633) and postherpetic neuralgia (ClinicalTrials.gov identifier: NCT04662281).
Collapse
Affiliation(s)
- Guanglin Luo
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Ling Chen
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Walter A Kostich
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Brian Hamman
- Lexicon Pharmaceuticals, 8800 Technology Forest Place, The Woodlands, Texas 77381, United States
| | - Jason Allen
- Lexicon Pharmaceuticals, 8800 Technology Forest Place, The Woodlands, Texas 77381, United States
| | - Amy Easton
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Clotilde Bourin
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Michael Gulianello
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Jonathan Lippy
- Department of Lead Evaluation, Bristol-Myers Squibb Company, Route 206 and Province Line Rd, Princeton, New Jersey 08543, United States
| | - Susheel Nara
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Tarun Kumar Maishal
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Kamalraj Thiyagarajan
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Prasadrao Jalagam
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Sreenivasulu Naidu Pattipati
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Kumaran Dandapani
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Manoj Dokania
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Pradeep Vattikundala
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Vivek Sharma
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Saravanan Elavazhagan
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Manoj Kumar Verma
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Manish Lal Das
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Santosh Wagh
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Anand Balakrishnan
- Department of Pharmaceutical Candidate Optimization, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Benjamin M Johnson
- Department of Pharmaceutical Candidate Optimization, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Kenneth S Santone
- Department of Pharmaceutical Candidate Optimization, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - George Thalody
- Discovery Toxicology, Bristol-Myers Squibb Company, Route 206 and Province Line Rd, Princeton, New Jersey 08543, United States
| | - Rex Denton
- Discovery Toxicology, Bristol-Myers Squibb Company, Route 206 and Province Line Rd, Princeton, New Jersey 08543, United States
| | - Hariharan Saminathan
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Vinay K Holenarsipur
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Anoop Kumar
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Abhijith Rao
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Siva Prasad Putlur
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Sarat Kumar Sarvasiddhi
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Ganesh Shankar
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Justin V Louis
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Manjunath Ramarao
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Charles M Conway
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Yu-Wen Li
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Rick Pieschl
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Yuan Tian
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Yang Hong
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Jonathan Ditta
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Arvind Mathur
- Department of Discovery Synthesis, Bristol-Myers Squibb Company, Route 206 and Province Line Rd, Princeton, New Jersey 08543, United States
| | - Jianqing Li
- Department of Discovery Synthesis, Bristol-Myers Squibb Company, Route 206 and Province Line Rd, Princeton, New Jersey 08543, United States
| | - Daniel Smith
- Department of Discovery Synthesis, Bristol-Myers Squibb Company, Route 206 and Province Line Rd, Princeton, New Jersey 08543, United States
| | - Joseph Pawluczyk
- Department of Discovery Synthesis, Bristol-Myers Squibb Company, Route 206 and Province Line Rd, Princeton, New Jersey 08543, United States
| | - Dawn Sun
- Department of Discovery Synthesis, Bristol-Myers Squibb Company, Route 206 and Province Line Rd, Princeton, New Jersey 08543, United States
| | - Shiuhang Yip
- Department of Discovery Synthesis, Bristol-Myers Squibb Company, Route 206 and Province Line Rd, Princeton, New Jersey 08543, United States
| | - Dauh-Rurng Wu
- Department of Discovery Synthesis, Bristol-Myers Squibb Company, Route 206 and Province Line Rd, Princeton, New Jersey 08543, United States
| | - Muthalagu Vetrichelvan
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Anuradha Gupta
- Biocon-Bristol Myers Squibb Research and Development Centre, Biocon Park, Plot No. 2 and 3, Bommasandra Phase IV, Jigani Link Road, Bangalore 560099, India
| | - Alan Wilson
- Lexicon Pharmaceuticals, 8800 Technology Forest Place, The Woodlands, Texas 77381, United States
| | - Suma Gopinathan
- Lexicon Pharmaceuticals, 8800 Technology Forest Place, The Woodlands, Texas 77381, United States
| | - Suman Wason
- Lexicon Pharmaceuticals, 8800 Technology Forest Place, The Woodlands, Texas 77381, United States
| | - Linda Bristow
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Charles F Albright
- Department of Neuroscience Discovery Biology, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Joanne J Bronson
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - John E Macor
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| | - Carolyn D Dzierba
- Department of Neuroscience Chemistry, Bristol-Myers Squibb Company, 5 Research Parkway, Wallingford, Connecticut 06492, United States
| |
Collapse
|
4
|
Gonzalez-Juarrero M, Lukka PB, Wagh S, Walz A, Arab J, Pearce C, Ali Z, Ryman JT, Parmar K, Temrikar Z, Munoz-Gutierrez J, Robertson GT, Liu J, Lenaerts AJ, Daley C, Lee RE, Braunstein M, Hickey AJ, Meibohm B. Preclinical Evaluation of Inhalational Spectinamide-1599 Therapy against Tuberculosis. ACS Infect Dis 2021; 7:2850-2863. [PMID: 34546724 DOI: 10.1021/acsinfecdis.1c00213] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The lengthy treatment time for tuberculosis (TB) is a primary cause for the emergence of multidrug resistant tuberculosis (MDR-TB). One approach to improve TB therapy is to develop an inhalational TB therapy that when administered in combination with oral TB drugs eases and shortens treatment. Spectinamides are new semisynthetic analogues of spectinomycin with excellent activity against Mycobacterium tuberculosis (Mtb), including MDR and XDR Mtb strains. Spectinamide-1599 was chosen as a promising candidate for development of inhalational therapy. Using the murine TB model and intrapulmonary aerosol delivery of spectinamide-1599, we characterized the pharmacokinetics and efficacy of this therapy in BALB/c and C3HeB/FeJ mice infected with the Mtb Erdman strain. As expected, spectinamide-1599 exhibited dose-dependent exposure in plasma, lungs, and ELF, but exposure ratios between lung and plasma were 12-40 times higher for intrapulmonary compared to intravenous or subcutaneous administration. In chronically infected BALB/c mice, low doses (10 mg/kg) of spectinamide-1599 when administered thrice weekly for two months provide efficacy similar to that of higher doses (50-100 mg/kg) after one month of therapy. In the C3HeB/FeJ TB model, intrapulmonary aerosol delivery of spectinamide-1599 (50 mg/kg) or oral pyrazinamide (150 mg/kg) had limited or no efficacy in monotherapy, but when both drugs were given in combination, a synergistic effect with superior bacterial reduction of >1.8 log10 CFU was observed. Throughout the up to eight-week treatment period, intrapulmonary therapy was well-tolerated without any overt toxicity. Overall, these results strongly support the further development of intrapulmonary spectinamide-1599 as a combination partner for anti-TB therapy.
Collapse
Affiliation(s)
- Mercedes Gonzalez-Juarrero
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Pradeep B. Lukka
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Santosh Wagh
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Amanda Walz
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Jennifer Arab
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Camron Pearce
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Zohaib Ali
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Josiah T. Ryman
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Keyur Parmar
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Zaid Temrikar
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Juan Munoz-Gutierrez
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Gregory T. Robertson
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Jiuyu Liu
- Department of Chemical Biology, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, United States
| | - Anne J. Lenaerts
- Mycobacteria Research Laboratories, Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Charles Daley
- Division of Mycobacterial and Respiratory Infections, National Jewish Health, Denver, Colorado 80206, United States
| | - Richard E. Lee
- Department of Chemical Biology, St. Jude Children’s Research Hospital, Memphis, Tennessee 38105, United States
| | - Miriam Braunstein
- Department of Microbiology and Immunology, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Anthony J. Hickey
- Discovery Science and Technology, RTI International, RTP, Durham, North Carolina 27709, United States
| | - Bernd Meibohm
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| |
Collapse
|
5
|
Nagesh PK, Chowdhury P, Hatami E, Kumari S, Kashyap VK, Tripathi MK, Wagh S, Meibohm B, Chauhan SC, Jaggi M, Yallapu MM. Cross-Linked Polyphenol-Based Drug Nano-Self-Assemblies Engineered to Blockade Prostate Cancer Senescence. ACS Appl Mater Interfaces 2019; 11:38537-38554. [PMID: 31553876 PMCID: PMC8020616 DOI: 10.1021/acsami.9b14738] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Cellular senescence is one of the prevailing issues in cancer therapeutics that promotes cancer relapse, chemoresistance, and recurrence. Patients undergoing persistent chemotherapy often develop drug-induced senescence. Docetaxel, an FDA-approved treatment for prostate cancer, is known to induce cellular senescence which often limits the overall survival of patients. Strategic therapies that counter the cellular and drug-induced senescence are an unmet clinical need. Towards this an effort was made to develop a novel therapeutic strategy that targets and removes senescent cells from the tumors, we developed a nanoformulation of tannic acid-docetaxel self-assemblies (DSAs). The construction of DSAs was confirmed through particle size measurements, spectroscopy, thermal, and biocompatibility studies. This formulation exhibited enhanced in vitro therapeutic activity in various biological functional assays with respect to native docetaxel treatments. Microarray and immunoblot analysis results demonstrated that DSAs exposure selectively deregulated senescence associated TGFβR1/FOXO1/p21 signaling. Decrease in β-galactosidase staining further suggested reversion of drug-induced senescence after DSAs exposure. Additionally, DSAs induced profound cell death by activation of apoptotic signaling through bypassing senescence. Furthermore, in vivo and ex vivo imaging analysis demonstrated the tumor targeting behavior of DSAs in mice bearing PC-3 xenograft tumors. The antisenescence and anticancer activity of DSAs was further shown in vivo by inhibiting TGFβR1 proteins and regressing tumor growth through apoptotic induction in the PC-3 xenograft mouse model. Overall, DSAs exhibited such advanced features due to a natural compound in the formulation as a matrix/binder for docetaxel. Overall, DSAs showed superior tumor targeting and improved cellular internalization, promoting docetaxel efficacy. These findings may have great implications in prostate cancer therapy.
Collapse
Affiliation(s)
- Prashanth K.B. Nagesh
- Department of Microbiology and Immunology, School of Medicine, University of Texas Rio Grande Valley, McAllen, Texas 78504, United States
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Pallabita Chowdhury
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Elham Hatami
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Sonam Kumari
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Vivek Kumar Kashyap
- Department of Microbiology and Immunology, School of Medicine, University of Texas Rio Grande Valley, McAllen, Texas 78504, United States
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Manish K. Tripathi
- Department of Microbiology and Immunology, School of Medicine, University of Texas Rio Grande Valley, McAllen, Texas 78504, United States
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Santosh Wagh
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Bernd Meibohm
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Subhash C. Chauhan
- Department of Microbiology and Immunology, School of Medicine, University of Texas Rio Grande Valley, McAllen, Texas 78504, United States
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Meena Jaggi
- Department of Microbiology and Immunology, School of Medicine, University of Texas Rio Grande Valley, McAllen, Texas 78504, United States
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
| | - Murali M. Yallapu
- Department of Microbiology and Immunology, School of Medicine, University of Texas Rio Grande Valley, McAllen, Texas 78504, United States
- Department of Pharmaceutical Sciences and Center for Cancer Research, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
- Corresponding Author Mailing address: Department of Immunology and Microbiology, 5300 North L Street, Room 2.249, McAllen, TX 78504. Phone: (956) 296-1705. Fax No: (956)-296-1325.
| |
Collapse
|
6
|
Rane M, Wagh S. Mitigation of harmonics and unbalanced source voltage condition in standalone microgrid: positive sequence component and dynamic phasor based compensator with real-time approach. Heliyon 2019; 5:e01178. [PMID: 30839949 PMCID: PMC6366151 DOI: 10.1016/j.heliyon.2019.e01178] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 01/03/2019] [Accepted: 01/24/2019] [Indexed: 12/04/2022] Open
Abstract
Penetration of Distributed Energy Resources (DER) is in high demand to supply power to the load where the grid is not available. Many of these sources are a single phase source used to form standalone Microgrid (MG). Single phase connectivity of these sources results in an unbalanced source voltage condition (UbSVC). Interfacing power electronic devices also inject the harmonics into Point of Common Coupling (PCC) voltage. The effect of this unbalance and harmonics on the operation of standalone MG is analysed in this paper in a twofold manner. One at a reduced power transfer from DER to load and the other is an error produced in Phase Locked Loop (PLL) operation. Positive Sequence Component (PSC) based and Dynamic Phasor (DP) based compensation techniques are proposed in this paper to mitigate the effect of UbSVC. Simulation validates that both the proposed methods are capable to provide balanced load voltage condition under UbSVC in terms of Voltage Unbalance Factor (VUbF). It also enhances the power transferred from DER to load during an UbSVC. The performance of the proposed compensator during UbSVC and harmonic presence is validated in real-time simulation using Opal-RT and dSPACE simulators.
Collapse
Affiliation(s)
- M Rane
- Electrical Engineering Department, VJTI, Mumbai, India
| | - S Wagh
- Electrical Engineering Department, VJTI, Mumbai, India
| |
Collapse
|
7
|
Chowdhury P, Nagesh PKB, Hatami E, Wagh S, Dan N, Tripathi MK, Khan S, Hafeez BB, Meibohm B, Chauhan SC, Jaggi M, Yallapu MM. Tannic acid-inspired paclitaxel nanoparticles for enhanced anticancer effects in breast cancer cells. J Colloid Interface Sci 2019; 535:133-148. [PMID: 30292104 PMCID: PMC6992213 DOI: 10.1016/j.jcis.2018.09.072] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/20/2018] [Accepted: 09/21/2018] [Indexed: 12/21/2022]
Abstract
Paclitaxel (PTX) is a gold standard chemotherapeutic agent for breast, ovarian, pancreatic and non-small cell lung carcinoma. However, in clinical use PTX can have adverse side effects or inadequate pharmacodynamic parameters, limiting its use. Nanotechnology is often employed to reduce the therapeutic dosage required for effective therapy, while also minimizing the systemic side effects of chemotherapy drugs. However, there is no nanoformulation of paclitaxel with chemosensitization motifs built in. With this objective, we screened eleven pharmaceutical excipients to develop an alternative paclitaxel nanoformulation using a self-assembly method. Based on the screening results, we observed tannic acid possesses unique properties to produce a paclitaxel nanoparticle formulation, i.e., tannic acid-paclitaxel nanoparticles. This stable TAP nanoformulation, referred to as TAP nanoparticles (TAP NPs), showed a spherical shape of ~ 102 nm and negative zeta potential of ~ -8.85. The presence of PTX in TAP NPs was confirmed by Fourier Transform Infrared (FTIR) spectra, thermogravimetric analyzer (TGA), and X-ray diffraction (XRD). Encapsulation efficiency of PTX in TAP NPs was determined to be ≥96%. Intracellular drug uptake of plain drug PTX on breast cancer cells (MDA-MB-231) shows more or less constant drug levels in 2 to 6 h, suggesting drug efflux by the P-gp transporters, over TAP NPs, in which PTX uptake was more than 95.52 ± 11.01% in 6 h, as analyzed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Various biological assays such as proliferation, clonogenic formation, invasion, and migration confirm superior anticancer effects of TAP NPs over plain PTX at all tested concentrations. P-gp expression, beta-tubulin stabilization, Western blot, and microarray analysis further confirm the improved therapeutic potential of TAP NPs. These results suggest that the TAP nanoformulation provides an important reference for developing a therapeutic nanoformulation affording pronounced, enhanced effects in breast cancer therapy.
Collapse
Affiliation(s)
- Pallabita Chowdhury
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Prashanth K B Nagesh
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Elham Hatami
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Santosh Wagh
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Nirnoy Dan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Manish K Tripathi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Sheema Khan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Bilal B Hafeez
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Bernd Meibohm
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Subhash C Chauhan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Meena Jaggi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Murali M Yallapu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN, USA.
| |
Collapse
|
8
|
Rathi C, Lukka PB, Wagh S, Lee RE, Lenaerts AJ, Braunstein M, Hickey A, Gonzalez-Juarrero M, Meibohm B. Comparative pharmacokinetics of spectinamide 1599 after subcutaneous and intrapulmonary aerosol administration in mice. Tuberculosis (Edinb) 2018; 114:119-122. [PMID: 30711150 DOI: 10.1016/j.tube.2018.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/26/2018] [Accepted: 12/30/2018] [Indexed: 12/31/2022]
Abstract
Spectinamides are a novel series of spectinomycin analogs being developed for the treatment of tuberculosis. Intrapulmonary aerosol (IPA) administration of lead spectinamide 1599 has previously been shown to be more efficacious than subcutaneous (SC) administration at comparable doses. The objective of the current study was to characterize the disposition of 1599 in plasma and lungs in mice in order to provide a potential rationale for the observed efficacy differences. 200 mg/kg of 1599 was administered to healthy BALB/c mice by SC injection or by IPA delivery. Plasma and major organs were collected at specified time points until 8 h after dosing. Drug concentrations were measured by LC-MS/MS and analyzed by noncompartmental pharmacokinetic analysis. 1599 demonstrated rapid absorption into plasma after IPA and SC administration, resulting in very similar plasma exposure for both routes. In contrast, drug exposure in the lungs was 48 times higher following IPA as compared to SC administration, which is highly desirable as the lungs are the main site of infection in pulmonary TB. The higher local exposure in the lungs is likely the basis for the increased efficacy after IPA compared to SC administration. Overall, this study supports the pulmonary route as a potential pathway for the treatment of tuberculosis with 1599.
Collapse
Affiliation(s)
- Chetan Rathi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Pradeep B Lukka
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Santosh Wagh
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Richard E Lee
- Department of Chemical Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
| | - Anne J Lenaerts
- Mycobacterial Research Laboratories, Department of Microbiology, Colorado State University, Fort Collins, CO 80523, USA
| | - Miriam Braunstein
- Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Anthony Hickey
- Discovery Science and Technology, RTI International, Durham, NC 27709, USA
| | - Mercedes Gonzalez-Juarrero
- Mycobacterial Research Laboratories, Department of Microbiology, Colorado State University, Fort Collins, CO 80523, USA
| | - Bernd Meibohm
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, Memphis, TN 38163, USA.
| |
Collapse
|
9
|
Faucette S, Wagh S, Trivedi A, Venkatakrishnan K, Gupta N. Reverse Translation of US Food and Drug Administration Reviews of Oncology New Molecular Entities Approved in 2011-2017: Lessons Learned for Anticancer Drug Development. Clin Transl Sci 2017; 11:123-146. [PMID: 29266809 PMCID: PMC5867000 DOI: 10.1111/cts.12527] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 11/06/2017] [Indexed: 12/29/2022] Open
Affiliation(s)
- Stephanie Faucette
- Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, Massachusetts, USA
| | - Santosh Wagh
- Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, Massachusetts, USA
| | - Ashit Trivedi
- Clinical Pharmacology, Amgen Inc., Thousand Oaks, California, USA
| | - Karthik Venkatakrishnan
- Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, Massachusetts, USA
| | - Neeraj Gupta
- Millennium Pharmaceuticals, Inc., a wholly owned subsidiary of Takeda Pharmaceutical Company Limited, Cambridge, Massachusetts, USA
| |
Collapse
|
10
|
Sinha S, Ahire D, Wagh S, Mullick D, Sistla R, Selvakumar K, Cortes JC, Putlur SP, Mandlekar S, Johnson BM. Electrophilicity of pyridazine-3-carbonitrile, pyrimidine-2-carbonitrile, and pyridine-carbonitrile derivatives: a chemical model to describe the formation of thiazoline derivatives in human liver microsomes. Chem Res Toxicol 2014; 27:2052-61. [PMID: 25372409 DOI: 10.1021/tx500256j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Certain aromatic nitriles are well-known inhibitors of cysteine proteases. The mode of action of these compounds involves the formation of a reversible or irreversible covalent bond between the nitrile and a thiol group in the active site of the enzyme. However, the reactivity of these aromatic nitrile-substituted heterocycles may lead inadvertently to nonspecific interactions with DNA, protein, glutathione, and other endogenous components, resulting in toxicity and complicating the use of these compounds as therapeutic agents. In the present study, the intrinsic reactivity and associated structure-property relationships of cathepsin K inhibitors featuring substituted pyridazines [6-phenylpyridazine-3-carbonitrile, 6-(4-fluorophenyl)pyridazine-3-carbonitrile, 6-(4-methoxyphenyl)pyridazine-3-carbonitrile, 6-p-tolylpyridazine-3-carbonitrile], pyrimidines [5-p-tolylpyrimidine-2-carbonitrile, 5-(4-fluorophenyl)pyrimidine-2-carbonitrile], and pyridines [5-p-tolylpicolinonitrile and 5-(4-fluorophenyl)picolinonitrile] were evaluated using a combination of computational and analytical approaches to establish correlations between electrophilicity and levels of metabolites that were formed in glutathione- and N-acetylcysteine-supplemented human liver microsomes. Metabolites that were characterized in this study featured substituted thiazolines that were formed following rearrangements of transient glutathione and N-acetylcysteine conjugates. Peptidases including γ-glutamyltranspeptidase were shown to catalyze the formation of these products, which were formed to lesser extents in the presence of the selective γ-glutamyltranspeptidase inhibitor acivicin and the nonspecific peptidase inhibitors phenylmethylsulfonyl fluoride and aprotinin. Of the chemical series mentioned above, the pyrimidine series was the most susceptible to metabolism to thiazoline-containing products, followed, in order, by the pyridazine and pyridine series. This trend was in keeping with the diminishing electrophilicity across these series, as demonstrated by in silico modeling. Hence, mechanistic insights gained from this study could be used to assist a medicinal chemistry campaign to design cysteine protease inhibitors that were less prone to the formation of covalent adducts.
Collapse
Affiliation(s)
- Sarmistha Sinha
- Pharmaceutical Candidate Optimization, ‡Medicinal Chemistry Department, and §Advanced Biotechnology Department, Biocon Bristol-Myers Squibb R&D Center (BBRC), Syngene International Ltd , Plot No. 2 & 3, Bommasandra IV Phase, Jigani Link Road, Bangalore 560100, India
| | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Shah RP, Garg A, Putlur SP, Wagh S, Kumar V, Rao V, Singh S, Mandlekar S, Desikan S. Practical and Economical Implementation of Online H/D Exchange in LC-MS. Anal Chem 2013; 85:10904-12. [DOI: 10.1021/ac402339s] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ravi P. Shah
- Analytical Research and Development, Pharmaceutical Development, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Bangalore, India
| | - Amit Garg
- Pharmaceutical Candidate Optimization, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Bangalore, India
| | - Siva Prasad Putlur
- Pharmaceutical Candidate Optimization, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Bangalore, India
| | - Santosh Wagh
- Pharmaceutical Candidate Optimization, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Bangalore, India
| | - Vineet Kumar
- Pharmaceutical Candidate Optimization, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Bangalore, India
| | - Venugopala Rao
- Analytical Research and Development, Pharmaceutical Development, Biocon Bristol-Myers Squibb R&D Center, Syngene International Ltd., Bangalore, India
| | - Saranjit Singh
- Department
of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, India
| | - Sandhya Mandlekar
- Pharmaceutical Candidate Optimization, Biocon Bristol-Myers Squibb R&D Center, Bristol-Myers Squibb India Pvt. Ltd., Bangalore, India
| | - Sridhar Desikan
- Analytical Research and Development, Pharmaceutical Development, Biocon Bristol-Myers Squibb R&D Center, Bristol-Myers Squibb India Pvt. Ltd., Bangalore, India
| |
Collapse
|
12
|
Abstract
OBJECTIVE The study was conducted to evaluate tear film stability and tear secretion before and after laser in situ keratomileusis. MATERIALS AND METHODS It was a prospective, longitudinal and non-comparative analysis of clinical data of 20 consecutive myopic patients (40 eyes) collected before and after laser in situ keratomileusis. Assessments included tear secretion (Schirmer I and II), fluorescein tear break up time and ocular surface staining. STATISTICS The statistical package for social science (SPSS 10.0) was used for data analysis. The parameters of tear secretion and tear stability were analyzed using the paired and unpaired Student t-tests. RESULTS Schirmer II was reduced at seven days (9.5 ± 4.30 mm) and one month (10.3 ± 3.06 mm, p=0.001) after operation from the pre-operative value of 16.12 ± 3.90 mm. Tear film stability significantly decreased at seven days (6.79 ± 3.05 sec, p Less than 0.001) and one month (8.03 ± 2.81secs, p less than 0.001) from its pre-operative value (12.68 ± 2.69 secs). 87.5% had tear film instability (FBUT less than 10secs) seven days after surgery; it was reduced to 75 % at one month and 27.5 % at three months. It was 7.5 % before surgery. Corneal staining score was increased significantly at seven days (1.42 ± 1. 58, p less than 0.01) and one month (0.95 ± 1.41, p=0.02), from the pre-operative score of 0.17 ± 0.44. CONCLUSION Laser in situ keratomileusis significantly alters the tear film stability, Schirmer values and corneal staining at least for three months.
Collapse
Affiliation(s)
- G S Shrestha
- Institute of Medicine, Tribhuvan University, Maharajgunj, Kathmandu, Nepal.
| | | | | |
Collapse
|
13
|
Abstract
BACKGROUND India is a populous country housing over a billion people. Neurology as a specialty is being practiced in India for over 50 years but the number of physicians devoted to fulltime neurology is limited. This fact coupled with the privatized healthcare system and limited infrastructure has led to situations different from the more developed healthcare systems. AIM To study the practice patterns of neurology in India. SETTING AND DESIGN Questionnaire-based study. MATERIALS AND METHODS Questionnaire was sent to 250 members of the Indian Academy of Neurology [sample size approximately 25%] using random number table. The responses were tabulated and analyzed. RESULTS AND CONCLUSIONS The neurology group is small and hence is exposed to a large workload. The average number of patients seen daily by Indian neurologists is three to four times those seen by the United States and United Kingdom neurologists. Neurologists based at district places are more likely to see direct patients; whereas metropolitan neurologists see more referrals. Investigative facilities are available to neurologists but affordability is a concern. Clinical work leaves less time for academic and research activities, which the consultants are keen to participate in. In the privatized health system of India, emergency work constitutes a difficult area to cope with. The concept of single specialty group practice is welcomed by the majority with the idea of streamlining their work and life. These factors highlight an urgent need for increasing the neurology work force and argue for further involvement of primary physicians and internists in neurological care in India.
Collapse
Affiliation(s)
- S V Khadilkar
- Department of Neurology, Grant Medical College and Sir JJ Group of Hospitals, Mumbai, India.
| | | |
Collapse
|
14
|
Abstract
In melanocytes, enzymes involved in the generation of melanin monomers are present and active in coated vesicles which are known to be acidic. Melanin polymerization however, occurs only in melanosomes. In vitro, it is not possible to generate melanin at the acidic pH of melanosomes using 3,4-dihydroxyphenylalanine (DOPA) and tyrosinase alone whereas melanin readily forms at higher pH with these reagents. Dimerization and elongation of the melanin polymer is known to require deprotonation. We have hypothesized that the amino acid side chains of melanosomal proteins act as proton acceptors to initiate polymerization and that the protonated basic groups serve to attract the negatively charged oligomers thus aiding polymerization and binding to proteins. We show that basic model proteins and basic premelanosomal proteins promote polymerization at an acidic pH and that positively charged surfaces allow binding of the growing melanin polymer. With progressive polymerization and exhaustion of the proton abstracting ability of melanosomal proteins, melanosomal pH drops further, which, we argue, is an additional controlling step that limits tyrosinase activity and melanin polymerization.
Collapse
Affiliation(s)
- S Wagh
- Hindustan Lever Research Centre, Andheri [E], Mumbai, India
| | | | | | | |
Collapse
|
15
|
Patil J, Deodhar J, Wagh S, Pandit AN. High risk factors for development of retinopathy of prematurity. Indian Pediatr 1997; 34:1024-7. [PMID: 9567533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- J Patil
- Department of Pediatrics, K.E.M. Hospital, Pune
| | | | | | | |
Collapse
|
16
|
Saini JS, Reddy MK, Sharma S, Wagh S. Donor corneal tissue evaluation. Indian J Ophthalmol 1996; 44:3-13. [PMID: 8828299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Proper evaluation of donor cornea is critical to the success of corneal transplantation. Attention must be paid to the cause of death and ocular condition as several general and ocular diseases constitute contraindications for donor corneal usage. Death to enucleation time should be noted. Gross examination and slit lamp biomicroscopy are mandatory for the evaluation of the donor eye while specular microscopy adds another useful dimension to information regarding donor cornea. This article provides a comprehensive review of all the aspects of donor corneal evaluation as practised today worldwide.
Collapse
Affiliation(s)
- J S Saini
- Department of Ophthalmology, Postgraduate Institute of Medical, Education and Research, Chandigarh, India
| | | | | | | |
Collapse
|
17
|
Bharucha PE, Baxi AJ, Wagh S, Bharucha EP. Prevention of neonatal tetanus. Indian Pediatr 1978; 15:765-7. [PMID: 730325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|