1
|
King DA, Smith AR, Pineda G, Nakano M, Michelini F, Goedegebuure SP, Thyparambil S, Liao WL, McCormick A, Ju J, Cioffi M, Zhang X, Hundal J, Griffith M, Grandori C, Pollastro M, Rosati R, Margossian A, Chatterjee P, Ainge T, Flory M, Ocampo P, Chen LM, Poultsides GA, Baron AD, Chang DT, Herman JM, Gillanders WE, Park H, Hoos WA, Nichols M, Fisher GA, Kuo CJ. Complete Remission of Widely Metastatic Human Epidermal Growth Factor Receptor 2-Amplified Pancreatic Adenocarcinoma After Precision Immune and Targeted Therapy With Description of Sequencing and Organoid Correlates. JCO Precis Oncol 2023; 7:e2100489. [PMID: 37079860 PMCID: PMC10309581 DOI: 10.1200/po.21.00489] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 02/10/2023] [Indexed: 04/22/2023] Open
Affiliation(s)
- Daniel A. King
- Northwell Health Cancer Institute and Feinstein Institute of Research, Lake Success, NY
| | | | | | - Michitaka Nakano
- Department of Medicine, Divisions of Hematology and Oncology, Stanford University School of Medicine, Stanford, CA
| | | | - S. Peter Goedegebuure
- Department of Surgery, Washington University School of Medicine in St Louis, St Louis, MO
| | | | | | - Aaron McCormick
- Department of Medicine, Divisions of Hematology and Oncology, Stanford University School of Medicine, Stanford, CA
| | - Jihang Ju
- Department of Medicine, Divisions of Hematology and Oncology, Stanford University School of Medicine, Stanford, CA
| | | | - Xiuli Zhang
- Department of Surgery, Washington University School of Medicine in St Louis, St Louis, MO
| | - Jasreet Hundal
- Department of Surgery, Washington University School of Medicine in St Louis, St Louis, MO
| | - Malachi Griffith
- Department of Medicine, Washington University School of Medicine, St Louis, MO
| | | | | | | | | | | | | | - Marta Flory
- Department of Radiology, Stanford University, Stanford, CA
| | - Paolo Ocampo
- Personalized Healthcare, Genentech, Inc, South San Francisco, CA
| | - Lee-may Chen
- Department of Gynecologic Oncology, University of California at San Francisco, San Francisco, CA
| | - George A. Poultsides
- Department of Surgery, Section of Surgical Oncology, Stanford University, Stanford, CA
| | - Ari D. Baron
- Division of Hematology Oncology, California Pacific Medical Center, San Francisco, CA
| | - Daniel T. Chang
- Department of Radiation Oncology, Stanford Cancer Institute, Stanford, CA
| | - Joseph M. Herman
- Department of Radiation Oncology and Northwell Health Cancer Institute, Lake Success, NY
| | - William E. Gillanders
- Department of Surgery, Washington University School of Medicine in St Louis, St Louis, MO
| | - Haeseong Park
- Department of Medicine, Division of Oncology, Washington University School of Medicine in St Louis
| | | | | | | | | |
Collapse
|
2
|
Ocampo P, Moreira A, Coudray N, Sakellaropoulos T, Narula N, Snuderl M, Fenyö D, Razavian N, Tsirigos A. P1.09-32 Classification and Mutation Prediction from Non-Small Cell Lung Cancer Histopathology Images Using Deep Learning. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.808] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
3
|
Abel Zur Wiesch P, Abel S, Gkotzis S, Ocampo P, Engelstädter J, Hinkley T, Magnus C, Waldor MK, Udekwu K, Cohen T. Classic reaction kinetics can explain complex patterns of antibiotic action. Sci Transl Med 2016; 7:287ra73. [PMID: 25972005 DOI: 10.1126/scitranslmed.aaa8760] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Finding optimal dosing strategies for treating bacterial infections is extremely difficult, and improving therapy requires costly and time-intensive experiments. To date, an incomplete mechanistic understanding of drug effects has limited our ability to make accurate quantitative predictions of drug-mediated bacterial killing and impeded the rational design of antibiotic treatment strategies. Three poorly understood phenomena complicate predictions of antibiotic activity: post-antibiotic growth suppression, density-dependent antibiotic effects, and persister cell formation. We show that chemical binding kinetics alone are sufficient to explain these three phenomena, using single-cell data and time-kill curves of Escherichia coli and Vibrio cholerae exposed to a variety of antibiotics in combination with a theoretical model that links chemical reaction kinetics to bacterial population biology. Our model reproduces existing observations, has a high predictive power across different experimental setups (R(2) = 0.86), and makes several testable predictions, which we verified in new experiments and by analyzing published data from a clinical trial on tuberculosis therapy. Although a variety of biological mechanisms have previously been invoked to explain post-antibiotic growth suppression, density-dependent antibiotic effects, and especially persister cell formation, our findings reveal that a simple model that considers only binding kinetics provides a parsimonious and unifying explanation for these three complex, phenotypically distinct behaviours. Current antibiotic and other chemotherapeutic regimens are often based on trial and error or expert opinion. Our "chemical reaction kinetics"-based approach may inform new strategies, which are based on rational design.
Collapse
Affiliation(s)
- Pia Abel Zur Wiesch
- Division of Global Health Equity, Brigham and Women's Hospital and Harvard Medical School, 641 Huntington Avenue, Boston, MA 02115, USA. Department of Epidemiology of Microbial Diseases, Yale School of Public Health, 60 College Street, New Haven, CT 06510, USA.
| | - Sören Abel
- Division of Infectious Diseases, Brigham and Women's Hospital and Harvard Medical School, 181 Longwood Avenue, Boston, MA 02115, USA. Department of Pharmacy, UiT, The Arctic University of Norway, 9037 Tromsø, Norway
| | - Spyridon Gkotzis
- Department of Neuroscience, Karolinska Institutet, Retzius väg 8, 17177 Stockholm, Sweden
| | - Paolo Ocampo
- Institute of Integrative Biology, ETH Zürich, Universitätsstrasse 16, 8092 Zürich, Switzerland. Department of Environmental Microbiology, EAWAG, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Jan Engelstädter
- School of Biological Sciences, University of Queensland, Brisbane, Queensland 4072, Australia
| | - Trevor Hinkley
- School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Carsten Magnus
- Institute of Medical Virology, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - Matthew K Waldor
- Division of Infectious Diseases, Brigham and Women's Hospital and Harvard Medical School, 181 Longwood Avenue, Boston, MA 02115, USA. Howard Hughes Medical Institute, 181 Longwood Avenue, Boston, MA 02115, USA
| | - Klas Udekwu
- Department of Neuroscience, Karolinska Institutet, Retzius väg 8, 17177 Stockholm, Sweden
| | - Ted Cohen
- Division of Global Health Equity, Brigham and Women's Hospital and Harvard Medical School, 641 Huntington Avenue, Boston, MA 02115, USA. Department of Epidemiology of Microbial Diseases, Yale School of Public Health, 60 College Street, New Haven, CT 06510, USA. Department of Epidemiology, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA
| |
Collapse
|
4
|
Wei Y, Ocampo P, Levin BR. An experimental study of the population and evolutionary dynamics of Vibrio cholerae O1 and the bacteriophage JSF4. Proc Biol Sci 2010; 277:3247-54. [PMID: 20538647 DOI: 10.1098/rspb.2010.0651] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Studies of Vibrio cholerae in the environment and infected patients suggest that the waning of cholera outbreaks is associated with rise in the density of lytic bacteriophage. In accordance with mathematical models, there are seemingly realistic conditions where phage predation could be responsible for declines in the incidence of cholera. Here, we present the results of experiments with the El Tor strain of V. cholerae (N16961) and a naturally occurring lytic phage (JSF4), exploring the validity of the main premise of this model: that phage predation limits the density of V. cholerae populations. At one level, the results of our experiments are inconsistent with this hypothesis. JSF4-resistant V. cholerae evolve within a short time following their confrontation with these viruses and their populations become limited by resources rather than phage predation. At a larger scale, however, the results of our experiments are not inconsistent with the hypothesis that bacteriophage modulate outbreaks of cholera. We postulate that the resistant bacteria that evolved play an insignificant role in the ecology or pathogenicity of V. cholerae. Relative to the phage-sensitive cells from whence they are derived, the evolved JSF4-resistant V. cholerae have fitness costs and other characters that are likely to impair their ability to compete with the sensitive cells in their natural habitat and may be avirulent in human hosts. The results of this in vitro study make predictions that can be tested in natural populations of V. cholerae and cholera-infected patients.
Collapse
Affiliation(s)
- Yan Wei
- Emory University, Graduate Program in Population Biology, Ecology and Evolution, 1510 Clifton Road, Atlanta, GA 30322, USA
| | | | | |
Collapse
|
5
|
Abstract
Adult respiratory distress syndrome is a major cause of morbidity in fire victims. Tumor necrosis factor-alpha(TNF-alpha) is edematogenic and has been associated with the etiology of other forms of adult respiratory distress syndrome. In the sheep lymph fistula model, we measured TNF-alpha after 48 (n = 7) or 128 (n = 3) breaths of cotton smoke and compared this with sham controls (n = 5) or controls in which left atrial pressure was elevated to 20 mmHg (n = 5) to increase lymph flow in the absence of inflammation. Smoke induced a rise in lymph flow and pulmonary arterial pressure with either no fall in lymph-to-plasma protein ratio (128 breaths) or a modest fall in lymph-to-plasma protein ratio (48 breaths), consistent with a change in microvascular permeability as well as a rise in microvascular pressure. Lymph concentration of TNF-alpha fell in both groups, although lymph flux (concentration x flow) transiently rose in both. In neither case did TNF-alpha flux exceed that induced by left atrial pressure elevation. TNF-alpha was detectable in only one out of five sheep in alveolar lavage. Thus, by utilizing a sensitive and specific radioimmunoassay, we were unable to demonstrate a role for TNF-alpha in smoke-induced microvascular lung injury in sheep.
Collapse
Affiliation(s)
- C A Hales
- Department of Medicine, Massachusetts General Hospital, Shriners Burns Institute, Boston, USA
| | | | | | | |
Collapse
|