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Le Sage V, Jones JE, Kormuth KA, Fitzsimmons WJ, Nturibi E, Padovani GH, Arevalo CP, French AJ, Avery AJ, Manivanh R, McGrady EE, Bhagwat AR, Lauring AS, Hensley SE, Lakdawala SS. Pre-existing heterosubtypic immunity provides a barrier to airborne transmission of influenza viruses. PLoS Pathog 2021; 17:e1009273. [PMID: 33600489 PMCID: PMC7891786 DOI: 10.1371/journal.ppat.1009273] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 01/04/2021] [Indexed: 12/04/2022] Open
Abstract
Human-to-human transmission of influenza viruses is a serious public health threat, yet the precise role of immunity from previous infections on the susceptibility to airborne infection is still unknown. Using the ferret model, we examined the roles of exposure duration and heterosubtypic immunity on influenza transmission. We demonstrate that a 48 hour exposure is sufficient for efficient transmission of H1N1 and H3N2 viruses. To test pre-existing immunity, a gap of 8–12 weeks between primary and secondary infections was imposed to reduce innate responses and ensure robust infection of donor animals with heterosubtypic viruses. We found that pre-existing H3N2 immunity did not significantly block transmission of the 2009 H1N1pandemic (H1N1pdm09) virus to immune animals. Surprisingly, airborne transmission of seasonal H3N2 influenza strains was abrogated in recipient animals with H1N1pdm09 pre-existing immunity. This protection from natural infection with H3N2 virus was independent of neutralizing antibodies. Pre-existing immunity with influenza B virus did not block H3N2 virus transmission, indicating that the protection was likely driven by the adaptive immune response. We demonstrate that pre-existing immunity can impact susceptibility to heterologous influenza virus strains, and implicate a novel correlate of protection that can limit the spread of respiratory pathogens through the air. Influenza viruses pose a major public health threat through both seasonal epidemics and sporadic pandemics. An individual’s first influenza virus infection leaves long-lasting immunity, which plays an unknown role on susceptibility to airborne transmission of new viral strains. We show that pre-existing heterosubtypic immunity against the 2009 H1N1 pandemic virus protects recipient animals from airborne transmission of a seasonal H3N2 influenza virus, which is independent of cross-neutralizing antibodies. Pre-existing immunity with influenza B viruses was not protective suggesting that this phenomenon is driven by an adaptive response. Taken together, these data indicate that pre-existing immunity is an important barrier to airborne transmission and can influence the emergence and spread of potentially pandemic viruses.
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Affiliation(s)
- Valerie Le Sage
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Jennifer E. Jones
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Karen A. Kormuth
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - William J. Fitzsimmons
- Division of Infectious Diseases, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Eric Nturibi
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Gabriella H. Padovani
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Claudia P. Arevalo
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Andrea J. French
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Annika J. Avery
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Richard Manivanh
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Elizabeth E. McGrady
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Amar R. Bhagwat
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - Adam S. Lauring
- Division of Infectious Diseases, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Scott E. Hensley
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Seema S. Lakdawala
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- Center for Vaccine Research, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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Stabile LP, Kumar V, Gaither-Davis A, Huang EH, Vendetti FP, Devadassan P, Dacic S, Bao R, Steinman RA, Burns TF, Bakkenist CJ. Syngeneic tobacco carcinogen-induced mouse lung adenocarcinoma model exhibits PD-L1 expression and high tumor mutational burden. JCI Insight 2021; 6:145307. [PMID: 33351788 PMCID: PMC7934870 DOI: 10.1172/jci.insight.145307] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 12/16/2020] [Indexed: 01/09/2023] Open
Abstract
Human lung adenocarcinoma (LUAD) in current or former smokers exhibits a high tumor mutational burden (TMB) and distinct mutational signatures. Syngeneic mouse models of clinically relevant smoking-related LUAD are lacking. We established and characterized a tobacco-associated, transplantable murine LUAD cell line, designated FVBW-17, from a LUAD induced by the tobacco carcinogen 4-(methylnitrosoamino)-1-(3-pyridyl)-1-butanone in the FVB/N mouse strain. Whole-exome sequencing of FVBW-17 cells identified tobacco-associated KrasG12D and Trp53 mutations and a similar mutation profile to that of classic alkylating agents with a TMB greater than 500. FVBW-17 cells transplanted subcutaneously, via tail vein, and orthotopically generated tumors that were histologically similar to human LUAD in FVB/N mice. FVBW-17 tumors expressed programmed death ligand 1 (PD-L1), were infiltrated with CD8+ T cells, and were responsive to anti-PD-L1 therapy. FVBW-17 cells were also engineered to express green fluorescent protein and luciferase to facilitate detection and quantification of tumor growth. Distant metastases to lung, spleen, liver, and kidney were observed from subcutaneously transplanted tumors. This potentially novel cell line is a robust representation of human smoking-related LUAD biology and provides a much needed preclinical model in which to test promising new agents and combinations, including immune-based therapies.
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Affiliation(s)
- Laura P. Stabile
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania, USA
| | - Vinod Kumar
- Division of Hematology/Oncology, Department of Medicine
| | | | - Eric H. Huang
- Division of Hematology/Oncology, Department of Medicine
| | | | | | - Sanja Dacic
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Riyue Bao
- UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania, USA
- Division of Hematology/Oncology, Department of Medicine
| | - Richard A. Steinman
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania, USA
- Division of Hematology/Oncology, Department of Medicine
| | - Timothy F. Burns
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania, USA
- Division of Hematology/Oncology, Department of Medicine
| | - Christopher J. Bakkenist
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania, USA
- Department of Radiation Oncology; and
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Taylor SA, Chen SY, Gadhvi G, Feng L, Gromer KD, Abdala-Valencia H, Nam K, Dominguez ST, Montgomery AB, Reyfman PA, Ostilla L, Wechsler JB, Cuda CM, Green RM, Perlman H, Winter DR. Transcriptional profiling of pediatric cholestatic livers identifies three distinct macrophage populations. PLoS One 2021; 16:e0244743. [PMID: 33411796 PMCID: PMC7790256 DOI: 10.1371/journal.pone.0244743] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 12/15/2020] [Indexed: 12/15/2022] Open
Abstract
Background & aims Limited understanding of the role for specific macrophage subsets in the pathogenesis of cholestatic liver injury is a barrier to advancing medical therapy. Macrophages have previously been implicated in both the mal-adaptive and protective responses in obstructive cholestasis. Recently two macrophage subsets were identified in non-diseased human liver; however, no studies to date fully define the heterogeneous macrophage subsets during the pathogenesis of cholestasis. Here, we aim to further characterize the transcriptional profile of macrophages in pediatric cholestatic liver disease. Methods We isolated live hepatic immune cells from patients with biliary atresia (BA), Alagille syndrome (ALGS), and non-cholestatic pediatric liver by fluorescence activated cell sorting. Through single-cell RNA sequencing analysis and immunofluorescence, we characterized cholestatic macrophages. We next compared the transcriptional profile of pediatric cholestatic and non-cholestatic macrophage populations to previously published data on normal adult hepatic macrophages. Results We identified 3 distinct macrophage populations across cholestatic liver samples and annotated them as lipid-associated macrophages, monocyte-like macrophages, and adaptive macrophages based on their transcriptional profile. Immunofluorescence of liver tissue using markers for each subset confirmed their presence across BA (n = 6) and ALGS (n = 6) patients. Cholestatic macrophages demonstrated reduced expression of immune regulatory genes as compared to normal hepatic macrophages and were distinct from macrophage populations defined in either healthy adult or pediatric non-cholestatic liver. Conclusions We are the first to perform single-cell RNA sequencing on human pediatric cholestatic liver and identified three macrophage subsets with distinct transcriptional signatures from healthy liver macrophages. Further analyses will identify similarities and differences in these macrophage sub-populations across etiologies of cholestatic liver disease. Taken together, these findings may allow for future development of targeted therapeutic strategies to reprogram macrophages to an immune regulatory phenotype and reduce cholestatic liver injury.
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Affiliation(s)
- Sarah A. Taylor
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Ann and Robert H Lurie Children’s Hospital of Chicago, Chicago, Illinois, United States of America
- * E-mail:
| | - Shang-Yang Chen
- Division of Rheumatology, Department of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Gaurav Gadhvi
- Division of Rheumatology, Department of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Liang Feng
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Ann and Robert H Lurie Children’s Hospital of Chicago, Chicago, Illinois, United States of America
| | - Kyle D. Gromer
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Ann and Robert H Lurie Children’s Hospital of Chicago, Chicago, Illinois, United States of America
| | - Hiam Abdala-Valencia
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Kiwon Nam
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Salina T. Dominguez
- Division of Rheumatology, Department of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Anna B. Montgomery
- Division of Rheumatology, Department of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Paul A. Reyfman
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Lorena Ostilla
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Ann and Robert H Lurie Children’s Hospital of Chicago, Chicago, Illinois, United States of America
| | - Joshua B. Wechsler
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Ann and Robert H Lurie Children’s Hospital of Chicago, Chicago, Illinois, United States of America
| | - Carla M. Cuda
- Division of Rheumatology, Department of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Richard M. Green
- Division of Gastroenterology and Hepatology, Northwestern University, Chicago, Illinois, United States of America
| | - Harris Perlman
- Division of Rheumatology, Department of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Deborah R. Winter
- Division of Rheumatology, Department of Medicine, Northwestern University, Chicago, Illinois, United States of America
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Huang QQ, Doyle R, Chen SY, Sheng Q, Misharin AV, Mao Q, Winter DR, Pope RM. Critical role of synovial tissue-resident macrophage niche in joint homeostasis and suppression of chronic inflammation. Sci Adv 2021; 7:7/2/eabd0515. [PMID: 33523968 PMCID: PMC7787490 DOI: 10.1126/sciadv.abd0515] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 11/17/2020] [Indexed: 05/30/2023]
Abstract
Little is known about the mechanisms regulating the transition of circulating monocytes into pro- or anti-inflammatory macrophages in chronic inflammation. Here, we took advantage of our novel mouse model of rheumatoid arthritis, in which Flip is deleted under the control of a CD11c promoter (HUPO mice). During synovial tissue homeostasis, both monocyte-derived F4/80int and self-renewing F4/80hi tissue-resident, macrophage populations were identified. However, in HUPO mice, decreased synovial tissue-resident macrophages preceded chronic arthritis, opened a niche permitting the influx of activated monocytes, with impaired ability to differentiate into F4/80hi tissue-resident macrophages. In contrast, Flip-replete monocytes entered the vacated niche and differentiated into tissue-resident macrophages, which suppressed arthritis. Genes important in macrophage tissue residency were reduced in HUPO F4/80hi macrophages and in leukocyte-rich rheumatoid arthritis synovial tissue monocytes. Our observations demonstrate that the macrophage tissue-resident niche is necessary for suppression of chronic inflammation and may contribute to the pathogenesis of rheumatoid arthritis.
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Affiliation(s)
- Qi-Quan Huang
- Department of Medicine, Division of Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Renee Doyle
- Department of Medicine, Division of Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Shang-Yang Chen
- Department of Medicine, Division of Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Qicong Sheng
- Department of Medicine, Division of Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Alexander V Misharin
- Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Qinwen Mao
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Deborah R Winter
- Department of Medicine, Division of Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
| | - Richard M Pope
- Department of Medicine, Division of Rheumatology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
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Manning EP, Stephens MD, Dufresne S, Silver B, Gerbarg P, Gerbarg Z, Dela Cruz CS, Sharma L. Disinfection of Pseudomonas aeruginosa from N95 respirators with ozone: a pilot study. BMJ Open Respir Res 2021; 8:e000781. [PMID: 33431507 PMCID: PMC7802653 DOI: 10.1136/bmjresp-2020-000781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/21/2020] [Accepted: 11/23/2020] [Indexed: 11/03/2022] Open
Abstract
INTRODUCTION Personal protective equipment shortages require the reuse of N95 respirators. We sought the necessary conditions for ozone to disinfect N95 respirators for reuse and the effects of multiple cycles of exposure. METHODS Portions of 3M 1870 N95 respirators were exposed to ozone at 400 ppm with 80% humidity for 2 hours to determine effectiveness of ozone on killing Pseudomonas aeruginosa. Entire 3M 1870 N95 respirators were exposed to five cycles of 400 ppm with 80% or higher humidity for 2 hours then evaluated for ozone's effects on airflow resistance, filtration efficiency, strap strength and quantitative fit. RESULTS Ozone exposure disinfected 3M 1870 N95 respirators heavily inoculated with P. aeruginosa. Ozone exposure did not negatively affect the airflow resistance, filtration efficiency, strap strength or fit of the 3M 1870 N95 respirator. DISCUSSION These results suggest that ozone is a feasible strategy to disinfect N95 respirators for reuse during this and future pandemics.
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Affiliation(s)
- Edward P Manning
- Section of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
- Department of Internal Medicine, VA Connecticut Healthcare System, West Haven, VA, USA
| | | | | | - Bruce Silver
- Silver Dental Associates, LLC, Burlington, New Jersey, USA
| | - Patricia Gerbarg
- Department of Behavioral Sciences, New York Medical College, Valhalla, New York, USA
| | - Zach Gerbarg
- Gerbarg & Associates Inc, Scottsdale, Arizona, USA
| | - Charles S Dela Cruz
- Section of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Lokesh Sharma
- Section of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
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Diaz-Espinosa AM, Link PA, Sicard D, Jorba I, Tschumperlin DJ, Haak AJ. Dopamine D1 receptor stimulates cathepsin K-dependent degradation and resorption of collagen I in lung fibroblasts. J Cell Sci 2020; 133:jcs248278. [PMID: 33172983 PMCID: PMC7746663 DOI: 10.1242/jcs.248278] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 04/28/2020] [Accepted: 11/02/2020] [Indexed: 01/18/2023] Open
Abstract
Matrix resorption is essential to the clearance of the extracellular matrix (ECM) after normal wound healing. A disruption in these processes constitutes a main component of fibrotic diseases, characterized by excess deposition and diminished clearance of fibrillar ECM proteins, such as collagen type I. The mechanisms and stimuli regulating ECM resorption in the lung remain poorly understood. Recently, agonism of dopamine receptor D1 (DRD1), which is predominantly expressed on fibroblasts in the lung, has been shown to accelerate tissue repair and clearance of ECM following bleomycin injury in mice. Therefore, we investigated whether DRD1 receptor signaling promotes the degradation of collagen type I by lung fibroblasts. For cultured fibroblasts, we found that DRD1 agonism enhances extracellular cleavage, internalization and lysosomal degradation of collagen I mediated by cathepsin K, which results in reduced stiffness of cell-derived matrices, as measured by atomic force microscopy. In vivo agonism of DRD1 similarly enhanced fibrillar collagen degradation by fibroblasts, as assessed by tissue labeling with a collagen-hybridizing peptide. Together, these results implicate DRD1 agonism in fibroblast-mediated collagen clearance, suggesting an important role for this mechanism in fibrosis resolution.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Ana M Diaz-Espinosa
- Department of Physiology & Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Patrick A Link
- Department of Physiology & Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Delphine Sicard
- Department of Physiology & Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Ignasi Jorba
- Department of Physiology & Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Daniel J Tschumperlin
- Department of Physiology & Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
| | - Andrew J Haak
- Department of Physiology & Biomedical Engineering, Mayo Clinic, Rochester, MN 55905, USA
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Deng S, Ramos-Castaneda M, Velasco WV, Clowers MJ, Gutierrez BA, Noble O, Dong Y, Zarghooni M, Alvarado L, Caetano MS, Yang S, Ostrin EJ, Behrens C, Wistuba II, Stabile LP, Kadara H, Watowich SS, Moghaddam SJ. Interplay between estrogen and Stat3/NF-κB-driven immunomodulation in lung cancer. Carcinogenesis 2020; 41:1529-1542. [PMID: 32603404 PMCID: PMC7896112 DOI: 10.1093/carcin/bgaa064] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/30/2020] [Accepted: 06/19/2020] [Indexed: 12/17/2022] Open
Abstract
K-ras mutant lung adenocarcinoma (LUAD) is the most common type of lung cancer, displays abysmal prognosis and is tightly linked to tumor-promoting inflammation, which is increasingly recognized as a target for therapeutic intervention. We have recently shown a gender-specific role for epithelial Stat3 signaling in the pathogenesis of K-ras mutant LUAD. The absence of epithelial Stat3 in male K-ras mutant mice (LR/Stat3Δ/Δ mice) promoted tumorigenesis and induced a nuclear factor-kappaB (NF-κB)-driven pro-tumor immune response while reducing tumorigenesis and enhancing anti-tumor immunity in female counterparts. In the present study, we manipulated estrogen and NF-κB signaling to study the mechanisms underlying this intriguing gender-disparity. In LR/Stat3Δ/Δ females, estrogen deprivation by bilateral oophorectomy resulted in higher tumor burden, an induction of NF-κB-driven immunosuppressive response, and reduced anti-tumor cytotoxicity, whereas estrogen replacement reversed these changes. On the other hand, exogenous estrogen in males successfully inhibited tumorigenesis, attenuated NF-κB-driven immunosuppression and boosted anti-tumor immunity. Mechanistically, genetic targeting of epithelial NF-κB activity resulted in reduced tumorigenesis and enhanced the anti-tumor immune response in LR/Stat3Δ/Δ males, but not females. Our data suggest that estrogen exerts a context-specific anti-tumor effect through inhibiting NF-κB-driven tumor-promoting inflammation and provide insights into developing novel personalized therapeutic strategies for K-ras mutant LUAD.
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Affiliation(s)
- Shanshan Deng
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Marco Ramos-Castaneda
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Walter V Velasco
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Michael J Clowers
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- The University of Texas M.D. Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Berenice A Gutierrez
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Oscar Noble
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yiping Dong
- Department of Oncology Radiotherapy, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Melody Zarghooni
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lucero Alvarado
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Mauricio S Caetano
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Shuanying Yang
- Department of Respiratory and Critical Care Medicine, Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Edwin J Ostrin
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Department of General Internal Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Carmen Behrens
- Department of Thoracic Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ignacio I Wistuba
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Laura P Stabile
- Department of Pharmacology and Chemical Biology, UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Humam Kadara
- The University of Texas M.D. Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Stephanie S Watowich
- The University of Texas M.D. Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
- Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Seyed Javad Moghaddam
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- The University of Texas M.D. Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
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Weil AA, Debela MD, Muyanja DM, Kakuhikire B, Baguma C, Bangsberg DR, Tsai AC, Lai PS. Gut carriage of antimicrobial resistance genes in women exposed to small-scale poultry farms in rural Uganda: A feasibility study. PLoS One 2020; 15:e0229699. [PMID: 32525954 PMCID: PMC7289395 DOI: 10.1371/journal.pone.0229699] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 05/19/2020] [Indexed: 01/21/2023] Open
Abstract
Background Antibiotic use for livestock is presumed to be a contributor to the acquisition of antimicrobial resistance (AMR) genes in humans, yet studies do not capture AMR data before and after livestock introduction. Methods We performed a feasibility study by recruiting a subset of women in a delayed-start randomized controlled trial of small-scale chicken farming to examine the prevalence of clinically-relevant AMR genes. Stool samples were obtained at baseline and one year post-randomization from five intervention women who received chickens at the start of the study, six control women who did not receive chickens until the end of the study, and from chickens provided to the control group at the end of the study. Stool was screened for 87 clinically significant AMR genes using a commercially available qPCR array (Qiagen). Results Chickens harbored 23 AMR genes from classes found in humans as well as additional vancomycin and β-lactamase resistance genes. AMR patterns between intervention and control women appeared more similar at baseline than one year post randomization (PERMANOVA R2 = 0.081, p = 0.61 at baseline, R2 = 0.186, p = 0.09 at 12 months) Women in the control group who had direct contact with the chickens sampled in the study had greater similarities in AMR gene patterns to chickens than those in the intervention group who did not have direct contact with chickens sampled (p = 0.01). However, at one year there was a trend towards increased similarity in AMR patterns between humans in both groups and the chickens sampled (p = 0.06). Conclusions Studies designed to evaluate human AMR genes in the setting of animal exposure should account for high baseline AMR rates. Concomitant collection of animal, human, and environmental samples over time is recommended to determine the directionality and source of AMR genes. Trial registration ClinicalTrials.gov Identifier NCT02619227.
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Affiliation(s)
- Ana A. Weil
- Department of Medicine, Massachusetts General Hospital Boston, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
| | - Meti D. Debela
- Department of Medicine, Massachusetts General Hospital Boston, Boston, Massachusetts, United States of America
| | | | | | - Charles Baguma
- Mbarara University of Science and Technology, Mbarara, Uganda
| | - David R. Bangsberg
- Mbarara University of Science and Technology, Mbarara, Uganda
- Oregon Health & Science University, Portland State University School of Public Health, Portland, Oregon, United States of America
| | - Alexander C. Tsai
- Harvard Medical School, Boston, Massachusetts, United States of America
- Mbarara University of Science and Technology, Mbarara, Uganda
- Harvard Center for Population and Development Studies, Cambridge, Massachusetts, United States of America
- Center for Global Health and Mongan Institute, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Peggy S. Lai
- Department of Medicine, Massachusetts General Hospital Boston, Boston, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
- Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States of America
- * E-mail:
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Cho SJ, Moon JS, Nikahira K, Yun HS, Harris R, Hong KS, Huang H, Choi AMK, Stout-Delgado H. GLUT1-dependent glycolysis regulates exacerbation of fibrosis via AIM2 inflammasome activation. Thorax 2020; 75:227-236. [PMID: 31822523 PMCID: PMC7063401 DOI: 10.1136/thoraxjnl-2019-213571] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 10/24/2019] [Accepted: 11/16/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Idiopathic pulmonary fibrosis (IPF) is a rapidly progressive, fatal lung disease that affects older adults. One of the detrimental natural histories of IPF is acute exacerbation of IPF (AE-IPF), of which bacterial infection is reported to play an important role. However, the mechanism by which bacterial infection modulates the fibrotic response remains unclear. OBJECTIVES Altered glucose metabolism has been implicated in the pathogenesis of fibrotic lung diseases. We have previously demonstrated that glucose transporter 1 (GLUT1)-dependent glycolysis regulates fibrogenesis in a murine fibrosis model. To expand on these findings, we hypothesised that GLUT1-dependent glycolysis regulates acute exacerbation of lung fibrogenesis during bacterial infection via AIM2 inflammasome activation. RESULTS In our current study, using a murine model of Streptococcus pneumoniae (S. pneumoniae) infection, we investigated the potential role of GLUT1 on mediating fibrotic responses to an acute exacerbation during bleomycin-induced fibrosis. The results of our current study illustrate that GLUT1 deficiency ameliorates S. pneumoniae-mediated exacerbation of lung fibrosis (wild type (WT)/phosphate buffered saline (PBS), n=3; WT/S. pneumoniae, n=3; WT/Bleomycin, n=5 ; WT/Bleomycin+S. pneumoniae, n=7; LysM-Cre-Glut1fl/f /PBS, n=3; LysM-Cre-Glut1fl/fl /S. pneumoniae, n=3; LysM-Cre-Glut1fl/fl /Bleomycin, n=6; LysM-Cre-Glut1fl/fl /Bleomycin+S. pneumoniae, n=9, p=0.041). Further, the AIM2 inflammasome, a multiprotein complex essential for sensing cytosolic bacterial DNA as a danger signal, is an important regulator of this GLUT1-mediated fibrosis and genetic deficiency of AIM2 reduced bleomycin-induced fibrosis after S. pneumoniae infection (WT/PBS, n=6; WT/Bleomycin+S. pneumoniae, n=15; Aim2-/-/PBS, n=6, Aim2-/-/Bleomycin+S. pneumoniae, n=11, p=0.034). GLUT1 deficiency reduced expression and function of the AIM2 inflammasome, and AIM2-deficient mice showed substantial reduction of lung fibrosis after S. pneumoniae infection. CONCLUSION Our results demonstrate that GLUT1-dependent glycolysis promotes exacerbation of lung fibrogenesis during S. pneumoniae infection via AIM2 inflammasome activation.
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Affiliation(s)
- Soo Jung Cho
- Medicine, Weill Cornell Medical College, New York City, New York, USA
| | - Jong-Seok Moon
- Department of Integrated Biomedical Science, Soonchunhyang Institute of Medi-bio Science (SIMS), Soon Chun Hyang University, Asan, Chungcheongnam-do, Korea
| | - Kiichi Nikahira
- Medicine, Weill Cornell Medical College, New York City, New York, USA
| | - Ha Seon Yun
- Medicine, Weill Cornell Medical College, New York City, New York, USA
| | - Rebecca Harris
- Medicine, Weill Cornell Medical College, New York City, New York, USA
| | - Kyung Sook Hong
- Medicine, Weill Cornell Medical College, New York City, New York, USA
| | - Huarong Huang
- Medicine, Weill Cornell Medical College, New York City, New York, USA
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Kus P, Gurcan MN, Beamer G. Automatic Detection of Granuloma Necrosis in Pulmonary Tuberculosis Using a Two-Phase Algorithm: 2D-TB. Microorganisms 2019; 7:E661. [PMID: 31817882 PMCID: PMC6956251 DOI: 10.3390/microorganisms7120661] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/05/2019] [Accepted: 11/08/2019] [Indexed: 01/10/2023] Open
Abstract
Granuloma necrosis occurs in hosts susceptible to pathogenic mycobacteria and is a diagnostic visual feature of pulmonary tuberculosis (TB) in humans and in super-susceptible Diversity Outbred (DO) mice infected with Mycobacterium tuberculosis. Currently, no published automated algorithms can detect granuloma necrosis in pulmonary TB. However, such a method could reduce variability, and transform visual patterns into quantitative data for statistical and machine learning analyses. Here, we used histopathological images from super-susceptible DO mice to train, validate, and performance test an algorithm to detect regions of cell-poor necrosis. The algorithm, named 2D-TB, works on 2-dimensional histopathological images in 2 phases. In phase 1, granulomas are detected following background elimination. In phase 2, 2D-TB searches within granulomas for regions of cell-poor necrosis. We used 8 lung sections from 8 different super-susceptible DO mice for training and 10-fold cross validation. We used 13 new lung sections from 10 different super-susceptible DO mice for performance testing. 2D-TB reached 100.0% sensitivity and 91.8% positive prediction value. Compared to an expert pathologist, agreement was 95.5% and there was a statistically significant positive correlation for area detected by 2D-TB and the pathologist. These results show the development, validation, and accurate performance of 2D-TB to detect granuloma necrosis.
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Affiliation(s)
- Pelin Kus
- Department of Research, Development and Technology, Republic of Turkey Ministry of National Defence, 06100 Ankara, Turkey;
| | - Metin N. Gurcan
- Department of Internal Medicine, School of Medicine, Wake Forest University, Winston-Salem, NC 27109, USA;
| | - Gillian Beamer
- Department of Infectious Disease and Global Health, Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA 01536, USA
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Kumova OK, Fike AJ, Thayer JL, Nguyen LT, Mell JC, Pascasio J, Stairiker C, Leon LG, Katsikis PD, Carey AJ. Lung transcriptional unresponsiveness and loss of early influenza virus control in infected neonates is prevented by intranasal Lactobacillus rhamnosus GG. PLoS Pathog 2019; 15:e1008072. [PMID: 31603951 PMCID: PMC6808501 DOI: 10.1371/journal.ppat.1008072] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 10/23/2019] [Accepted: 09/05/2019] [Indexed: 12/11/2022] Open
Abstract
Respiratory viral infections contribute substantially to global infant losses and disproportionately affect preterm neonates. Using our previously established neonatal murine model of influenza infection, we demonstrate that three-day old mice are exceptionally sensitive to influenza virus infection and exhibit high mortality and viral load. Intranasal pre- and post-treatment of neonatal mice with Lactobacillus rhamnosus GG (LGG), an immune modulator in respiratory viral infection of adult mice and human preterm neonates, considerably improves neonatal mice survival after influenza virus infection. We determine that both live and heat-killed intranasal LGG are equally efficacious in protection of neonates. Early in influenza infection, neonatal transcriptional responses in the lung are delayed compared to adults. These responses increase by 24 hours post-infection, demonstrating a delay in the kinetics of the neonatal anti-viral response. LGG pretreatment improves immune gene transcriptional responses during early infection and specifically upregulates type I IFN pathways. This is critical for protection, as neonatal mice intranasally pre-treated with IFNβ before influenza virus infection are also protected. Using transgenic mice, we demonstrate that the protective effect of LGG is mediated through a MyD88-dependent mechanism, specifically via TLR4. LGG can improve both early control of virus and transcriptional responsiveness and could serve as a simple and safe intervention to protect neonates.
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Affiliation(s)
- Ogan K. Kumova
- Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
| | - Adam J. Fike
- Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
| | - Jillian L. Thayer
- Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
| | - Linda T. Nguyen
- Pediatrics, Drexel University College of Medicine, Philadelphia, PA, United States of America
| | - Joshua Chang Mell
- Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
| | - Judy Pascasio
- Pathology, Drexel University College of Medicine, Philadelphia, PA, United States of America
| | - Christopher Stairiker
- Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Immunology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Leticia G. Leon
- Immunology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Peter D. Katsikis
- Immunology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Alison J. Carey
- Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, United States of America
- Pediatrics, Drexel University College of Medicine, Philadelphia, PA, United States of America
- * E-mail:
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Bondoc JMG, Gutka HJ, Almutairi MM, Patwell R, Rutter MW, Wolf NM, Samudrala R, Mehboob S, Movahedzadeh F. Rv0100, a proposed acyl carrier protein in Mycobacterium tuberculosis: expression, purification and crystallization. Acta Crystallogr F Struct Biol Commun 2019; 75:646-651. [PMID: 31584013 PMCID: PMC6777135 DOI: 10.1107/s2053230x19012652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 06/26/2019] [Accepted: 09/11/2019] [Indexed: 11/10/2022] Open
Abstract
Acyl carrier proteins (ACPs) are important components in fatty-acid biosynthesis in prokaryotes. Rv0100 is predicted to be an essential ACP in Mycobacterium tuberculosis, the pathogen that is the causative agent of tuberculosis, and therefore has the potential to be a novel antituberculosis drug target. Here, the successful cloning and purification of Rv0100 using Mycobacterium smegmatis as a host is reported. Crystals of the purified protein were obtained that diffracted to a resolution of 1.9 Å. Overall, this work lays the foundation for the future pursuit of drug discovery and development against this potentially novel drug target.
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Affiliation(s)
- Jasper Marc G. Bondoc
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
| | - Hiten J. Gutka
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
- Oncobiologics Inc., 7 Clarke Drive, Cranbury, NJ 08512, USA
| | - Mashal M. Almutairi
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh 12371, Saudi Arabia
- Vaccines and Biologics Research Unit, College of Pharmacy, King Saud University, Riyadh 12371, Saudi Arabia
- Department of Pediatrics and Molecular Virology and Microbiology, National School of Tropical Medicine, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX 77030, USA
| | - Ryan Patwell
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
- Department of Psychiatry, University of Illinois at Chicago, 1601 West Taylor Street, Room 425, Chicago, IL 60612, USA
| | - Maxwell W. Rutter
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
- Hollingbery and Son Hops Inc., 302 North First Avenue, Yakima, WA 98907, USA
| | - Nina M. Wolf
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
| | - Ram Samudrala
- Department of Biomedical Informatics, Jacobs School of Medicine and Biomedical Sciences, State University of New York (SUNY), University at Buffalo, 77 Goodell Street, Buffalo, NY 14203, USA
| | - Shahila Mehboob
- Neugenica LLC, 2242 West Harrison Street #201, Chicago, IL 60612, USA
| | - Farahnaz Movahedzadeh
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street, Chicago, IL 60612, USA
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Rao DM, Phan DT, Choo MJ, Weaver MR, Oberley-Deegan RE, Bowler RP, Gally F. Impact of fatty acid binding protein 5-deficiency on COPD exacerbations and cigarette smoke-induced inflammatory response to bacterial infection. Clin Transl Med 2019; 8:7. [PMID: 30877402 PMCID: PMC6420539 DOI: 10.1186/s40169-019-0227-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 03/09/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Although cigarette smoking (CS) is by far the most important risk factor of chronic obstructive pulmonary disease (COPD), repeated and sustained infections are clearly linked to disease pathogenesis and are responsible for acute inflammatory flares (i.e. COPD exacerbations). We have previously identified Fatty Acid Binding Protein 5 (FABP5) as an important anti-inflammatory protein in primary airway epithelial cells. RESULTS In this study we found decreased FABP5 mRNA and protein levels in peripheral blood mononuclear cells (PBMCs) of COPD patients, especially among those who reported episodes of COPD exacerbations. Using wildtype (WT) and FABP5-/- mice, we examined the effects of FABP5 on CS and infection-induced inflammatory responses. Similarly to what we saw in airway epithelial cells, infection increased FABP5 expression while CS decreased FABP5 expression in mouse lung tissues. CS-exposed and P. aeruginosa-infected FABP5-/- mice had significantly increased inflammation as shown by increased lung histopathological score, cell infiltration and inflammatory cytokine levels. Restoration of FABP5 in alveolar macrophages using a lentiviral approach attenuated the CS- and bacteria-induced pulmonary inflammation. And finally, while P. aeruginosa infection increased PPARγ activity, CS or FABP5 knockdown greatly reduced PPARγ activity. CONCLUSIONS These findings support a model in which CS-induced FABP5 inhibition contributes to increased inflammation in COPD exacerbations. It is interesting to speculate that the increased inflammation is a result of decreased PPARγ activity.
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Affiliation(s)
- Deviyani M. Rao
- Department of Biomedical Research, National Jewish Health, 1400 Jackson St., Room K827, Denver, CO 80206 USA
| | - Della T. Phan
- Department of Biomedical Research, National Jewish Health, 1400 Jackson St., Room K827, Denver, CO 80206 USA
| | - Michelle J. Choo
- Department of Biomedical Research, National Jewish Health, 1400 Jackson St., Room K827, Denver, CO 80206 USA
| | - Michael R. Weaver
- Department of Medicine, National Jewish Health, 1400 Jackson Street, Denver, CO 80206 USA
| | - Rebecca E. Oberley-Deegan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, BCC 6.12.392, 985870 Nebraska Medical Center, Omaha, NE 68198-5870 USA
| | - Russell P. Bowler
- Department of Medicine, National Jewish Health, 1400 Jackson Street, Denver, CO 80206 USA
| | - Fabienne Gally
- Department of Biomedical Research, National Jewish Health, 1400 Jackson St., Room K827, Denver, CO 80206 USA
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Lee YG, Reader BF, Herman D, Streicher A, Englert JA, Ziegler M, Chung S, Karpurapu M, Park GY, Christman JW, Ballinger MN. Sirtuin 2 enhances allergic asthmatic inflammation. JCI Insight 2019; 4:124710. [PMID: 30668546 PMCID: PMC6478424 DOI: 10.1172/jci.insight.124710] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 09/06/2018] [Accepted: 01/16/2019] [Indexed: 12/22/2022] Open
Abstract
Allergic eosinophilic asthma is a chronic condition causing airway remodeling resulting in lung dysfunction. We observed that expression of sirtuin 2 (Sirt2), a histone deacetylase, regulates the recruitment of eosinophils after sensitization and challenge with a triple antigen: dust mite, ragweed, and Aspergillus fumigatus (DRA). Our data demonstrate that IL-4 regulates the expression of Sirt2 isoform 3/5. Pharmacological inhibition of Sirt2 by AGK2 resulted in diminished cellular recruitment, decreased CCL17/TARC, and reduced goblet cell hyperplasia. YM1 and Fizz1 expression was reduced in AGK2-treated, IL-4-stimulated lung macrophages in vitro as well as in lung macrophages from AGK2-DRA-challenged mice. Conversely, overexpression of Sirt2 resulted in increased cellular recruitment, CCL17 production, and goblet cell hyperplasia following DRA challenge. Sirt2 isoform 3/5 was upregulated in primary human alveolar macrophages following IL-4 and AGK2 treatment, which resulted in reduced CCL17 and markers of alternative activation. These gain-of-function and loss-of-function studies indicate that Sirt2 could be developed as a treatment for eosinophilic asthma.
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Affiliation(s)
- Yong Gyu Lee
- Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio, USA
| | - Brenda F. Reader
- Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio, USA
| | - Derrick Herman
- Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio, USA
| | - Adam Streicher
- Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio, USA
| | - Joshua A. Englert
- Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio, USA
| | - Mathias Ziegler
- Department of Molecular Biology, University of Bergen, Bergen, Norway
| | - Sangwoon Chung
- Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio, USA
| | - Manjula Karpurapu
- Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio, USA
| | - Gye Young Park
- Pulmonary, Critical Care and Sleep Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - John W. Christman
- Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio, USA
| | - Megan N. Ballinger
- Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, Ohio, USA
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Hussain SS, George S, Singh S, Jayant R, Hu CA, Sopori M, Chand HS. A Small Molecule BH3-mimetic Suppresses Cigarette Smoke-Induced Mucous Expression in Airway Epithelial Cells. Sci Rep 2018; 8:13796. [PMID: 30218002 PMCID: PMC6138652 DOI: 10.1038/s41598-018-32114-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 09/03/2018] [Indexed: 01/07/2023] Open
Abstract
Cigarette smoke (CS) exposure is one of the primary risk factors associated with the chronic mucous hypersecretion (CMH). The antiapoptotic protein, Bcl-2 sustains hyperplastic mucous cells, and the airway epithelium of ex-smokers with CMH as well as mice exposed to chronic CS showed increased Bcl-2 expression. Therefore, we investigated whether Bcl-2 plays a role in CS-induced mucous expression. Primary airway epithelial cells (AECs) of murine and human origin were treated with CS extract (CSE), and there was a concentration- and time-dependent increase in secretory mucin (MUC5AC), mucous regulator (SPDEF) and Bcl-2 expression. Using differentiated human AECs cultured on air-liquid interface, EGFR and ERK1/2 pathways were interrogated. Bcl-2 activity was blocked using a small molecule BH3 mimetic ABT-263 that disrupts the Bcl-2 interaction with pro-apoptotic proteins. The ABT-263 treatment resulted in the downregulation of CSE-induced mucus expression and disrupted the EGFR-signaling while inducing the apoptosis and the pro-apoptotic protein, Bik expression. This strategy significantly suppressed the mainstream CS-induced mucous phenotype in a 3-D human airway epithelium model. Therefore, the present study suggests that CS induces Bcl-2 expression to help promote mucous cell survival; and small molecule BH3 mimetics targeting Bcl-2 could be useful in suppressing the CS-induced mucous response.
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Affiliation(s)
- Shah S Hussain
- Department of Immunology & Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL - 33199, USA
| | - Shebin George
- Department of Immunology & Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL - 33199, USA
| | - Shashi Singh
- Lovelace Respiratory Research Institute, Albuquerque, NM - 87108, USA
| | - Rahul Jayant
- Department of Immunology & Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL - 33199, USA
| | - Chien-An Hu
- Department of Biochemistry and Molecular Biology, University of New Mexico, Albuquerque, NM - 87131, USA
| | - Mohan Sopori
- Lovelace Respiratory Research Institute, Albuquerque, NM - 87108, USA
| | - Hitendra S Chand
- Department of Immunology & Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL - 33199, USA.
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Pragman AA, Lyu T, Baller JA, Gould TJ, Kelly RF, Reilly CS, Isaacson RE, Wendt CH. The lung tissue microbiota of mild and moderate chronic obstructive pulmonary disease. Microbiome 2018; 6:7. [PMID: 29316977 PMCID: PMC5759273 DOI: 10.1186/s40168-017-0381-4] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [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] [Received: 07/11/2017] [Accepted: 12/11/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND Oral taxa are often found in the chronic obstructive pulmonary disease (COPD) lung microbiota, but it is not clear if this is due to a physiologic process such as aspiration or experimental contamination at the time of specimen collection. METHODS Microbiota samples were obtained from nine subjects with mild or moderate COPD by swabbing lung tissue and upper airway sites during lung lobectomy. Lung specimens were not contaminated with upper airway taxa since they were obtained surgically. The microbiota were analyzed with 16S rRNA gene qPCR and 16S rRNA gene hypervariable region 3 (V3) sequencing. Data analyses were performed using QIIME, SourceTracker, and R. RESULTS Streptococcus was the most common genus in the oral, bronchial, and lung tissue samples, and multiple other taxa were present in both the upper and lower airways. Each subject's own bronchial and lung tissue microbiota were more similar to each other than were the bronchial and lung tissue microbiota of two different subjects (permutation test, p = 0.0139), indicating more within-subject similarity than between-subject similarity at these two lung sites. Principal coordinate analysis of all subject samples revealed clustering by anatomic sampling site (PERMANOVA, p = 0.001), but not by subject. SourceTracker analysis found that the sources of the lung tissue microbiota were 21.1% (mean) oral microbiota, 8.7% nasal microbiota, and 70.1% unknown. An analysis using the neutral theory of community ecology revealed that the lung tissue microbiota closely reflects the bronchial, oral, and nasal microbiota (immigration parameter estimates 0.69, 0.62, and 0.74, respectively), with some evidence of ecologic drift occurring in the lung tissue. CONCLUSION This is the first study to evaluate the mild-moderate COPD lung tissue microbiota without potential for upper airway contamination of the lung samples. In our small study of subjects with COPD, we found oral and nasal bacteria in the lung tissue microbiota, confirming that aspiration is a source of the COPD lung microbiota.
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Affiliation(s)
- Alexa A Pragman
- Department of Medicine, University of Minnesota and Minneapolis Veterans Affairs Medical Center, Minneapolis VA Health Care System, Research Service (151), 1 Veterans Drive, Minneapolis, MN, 55417, USA.
| | - Tianmeng Lyu
- Division of Biostatistics, University of Minnesota School of Public Health, MMC 303 Mayo, 8303A, 420 Delaware St. SE, Minneapolis, MN, 55455, USA
| | - Joshua A Baller
- Minnesota Supercomputing Institute, University of Minnesota, Room 599 Walter Library, 3721A, 117 Pleasant St. SE, Minneapolis, MN, 55455, USA
| | - Trevor J Gould
- Biological Science Dean's Office, University of Minnesota Informatics Institute, Room 123 SnH, 6174A, 1475 Gortner Ave., St. Paul, MN, 55108, USA
| | - Rosemary F Kelly
- Division of Cardiothoracic Surgery, University of Minnesota and Minneapolis Veterans Affairs Medical Center, 1 Veterans Dr., Minneapolis, MN, 55417, USA
| | - Cavan S Reilly
- Division of Biostatistics, University of Minnesota School of Public Health, MMC 303 Mayo, 8303A, 420 Delaware St. SE, Minneapolis, MN, 55455, USA
| | - Richard E Isaacson
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Room 205G VetS, 6187A, 1971 Commonwealth Ave., St. Paul, MN, 55108, USA
| | - Chris H Wendt
- Department of Medicine, University of Minnesota and Minneapolis Veterans Affairs Medical Center, Minneapolis VA Health Care System, Research Service (151), 1 Veterans Drive, Minneapolis, MN, 55417, USA
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Kaza N, Raju SV, Cadillac JM, Trombley JA, Rasmussen L, Tang L, Dohm E, Harrod KS, Rowe SM. Use of ferrets for electrophysiologic monitoring of ion transport. PLoS One 2017; 12:e0186984. [PMID: 29077751 PMCID: PMC5659650 DOI: 10.1371/journal.pone.0186984] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 10/11/2017] [Indexed: 01/13/2023] Open
Abstract
Limited success achieved in translating basic science discoveries into clinical applications for chronic airway diseases is attributed to differences in respiratory anatomy and physiology, poor approximation of pathologic processes, and lack of correlative clinical endpoints between humans and laboratory animal models. Here, we discuss advantages of using ferrets (Mustela putorus furo) as a model for improved understanding of human airway physiology and demonstrate assays for quantifying airway epithelial ion transport in vivo and ex vivo, and establish air-liquid interface cultures of ferret airway epithelial cells as a complementary in vitro model for mechanistic studies. We present data here that establishes the feasibility of measuring these human disease endpoints in ferrets. Briefly, potential difference across the nasal and the lower airway epithelium in ferrets could be consistently assessed, were highly reproducible, and responsive to experimental interventions. Additionally, ferret airway epithelial cells were amenable to primary cell culture methods for in vitro experiments as was the use of ferret tracheal explants as an ex vivo system for assessing ion transport. The feasibility of conducting multiple assessments of disease outcomes supports the adoption of ferrets as a highly relevant model for research in obstructive airway diseases.
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Affiliation(s)
- Niroop Kaza
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
- Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - S. Vamsee Raju
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
- Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Joan M. Cadillac
- Animal Resources Program, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - John A. Trombley
- Department of Anesthesiology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Lawrence Rasmussen
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
- Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Liping Tang
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
- Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Erik Dohm
- Animal Resources Program, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Kevin S. Harrod
- Department of Anesthesiology, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
| | - Steven M. Rowe
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
- Gregory Fleming James Cystic Fibrosis Research Center, University of Alabama at Birmingham, Birmingham, Alabama, United States of America
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Zhang X, Biagini Myers JM, Yadagiri VK, Ulm A, Chen X, Weirauch MT, Khurana Hershey GK, Ji H. Nasal DNA methylation differentiates corticosteroid treatment response in pediatric asthma: A pilot study. PLoS One 2017; 12:e0186150. [PMID: 29028809 PMCID: PMC5640236 DOI: 10.1371/journal.pone.0186150] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 09/26/2017] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Treatment response to systemic corticosteroid in asthmatic children is heterogeneous and may be mediated by epigenetic mechanism(s). We aim to identify DNA methylation (DNAm) changes responsive to steroid, and DNAm biomarkers that distinguish treatment response. MATERIALS AND METHODS We followed 33 children (ages 5-18) presenting to the Emergency Department (ED) for asthma exacerbation. Based on whether they met discharge criteria in ≤24 hours, participants were grouped into good and poor responders to steroid treatment. Nasal samples were collected upon presentation to the ED (T0) and 18-24 hours later (T1). Genome-wide DNAm was measured for both time points in 20 subjects, and compared between T0 and T1 in good and poor responders respectively. DNAm at T1 was also compared between two responder groups. DNAm of selected CpGs was verified in the complete cohort, and expression of associated genes was examined. Interactions between DNAm, common single nucleotide polymorphism (SNP) located at the CpG sites and treatment responses were assessed. RESULTS Three CpGs located in the OTX2 promoter showed responder-specific DNAm changes from T0 to T1, in which DNAm decreased in good but not in poor responders. Good and poor responders showed differential DNAm at T1 in 127 CpGs without and 182 CpGs with common SNP co-localization. Negative correlations between DNAm and gene expression were observed at CpGs located within the LDHC promoter, suggesting an impact of DNAm on gene regulation. Interactions between SNPs, DNAm and treatment response were detected. CONCLUSION Acute systemic steroid treatment modifies nasal DNAm in good responders. Nasal DNAm, dependent or independent of SNPs, can differentiate response to treatment in acute asthmatic children.
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Affiliation(s)
- Xue Zhang
- Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Pyrosequencing lab for genomic and epigenomic research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Jocelyn M. Biagini Myers
- Division of Asthma Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Veda K. Yadagiri
- Pyrosequencing lab for genomic and epigenomic research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Division of Asthma Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Ashley Ulm
- Pyrosequencing lab for genomic and epigenomic research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Division of Asthma Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Xiaoting Chen
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Matthew T. Weirauch
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Center for Autoimmune Genomics and Etiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Divisions of Biomedical Informatics and Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Gurjit K. Khurana Hershey
- Division of Asthma Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
| | - Hong Ji
- Pyrosequencing lab for genomic and epigenomic research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Division of Asthma Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- * E-mail:
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Rao D, Perraud AL, Schmitz C, Gally F. Cigarette smoke inhibits LPS-induced FABP5 expression by preventing c-Jun binding to the FABP5 promoter. PLoS One 2017; 12:e0178021. [PMID: 28542209 PMCID: PMC5436865 DOI: 10.1371/journal.pone.0178021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 04/10/2017] [Indexed: 12/21/2022] Open
Abstract
Cigarette smoking is the primary cause of chronic obstructive pulmonary disease (COPD) with repeated and sustained infections linked to disease pathogenesis and exacerbations. The airway epithelium constitutes the first line of host defense against infection and is known to be impaired in COPD. We have previously identified Fatty Acid Binding Protein 5 (FABP5) as an important anti-inflammatory player during respiratory infections and showed that overexpression of FABP5 in primary airway epithelial cells protects against bacterial infection and inflammation. While cigarette smoke down regulates FABP5 expression, its mechanism remains unknown. In this report, we have identified three putative c-Jun binding sites on the FABP5 promoter and show that cigarette smoke inhibits the binding of c-Jun to its consensus sequence and prevents LPS-induced FABP5 expression. Using chromatin immunoprecipitation, we have determined that c-Jun binds the FABP5 promoter when stimulated with LPS but the presence of cigarette smoke greatly reduces this binding. Furthermore, cigarette smoke or a mutation in the c-Jun binding site inhibits LPS-induced FABP5 promoter activity. These data demonstrate that cigarette smoke interferes with FABP5 expression in response to bacterial infection. Thus, functional activation of FABP5 may be a new therapeutic strategy when treating COPD patients suffering from exacerbations.
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Affiliation(s)
- Deviyani Rao
- Department of Biomedical Research, National Jewish Health, Denver, Colorado, United States of America
| | - Anne-Laure Perraud
- Department of Biomedical Research, National Jewish Health, Denver, Colorado, United States of America
- Department of Immunology and Microbiology, University of Colorado Denver, United States of America
| | - Carsten Schmitz
- Department of Biomedical Research, National Jewish Health, Denver, Colorado, United States of America
- Department of Immunology and Microbiology, University of Colorado Denver, United States of America
| | - Fabienne Gally
- Department of Biomedical Research, National Jewish Health, Denver, Colorado, United States of America
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Casson CN, Doerner JL, Copenhaver AM, Ramirez J, Holmgren AM, Boyer MA, Siddarthan IJ, Rouhanifard SH, Raj A, Shin S. Neutrophils and Ly6Chi monocytes collaborate in generating an optimal cytokine response that protects against pulmonary Legionella pneumophila infection. PLoS Pathog 2017; 13:e1006309. [PMID: 28384349 PMCID: PMC5404877 DOI: 10.1371/journal.ppat.1006309] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 04/25/2017] [Accepted: 03/22/2017] [Indexed: 12/14/2022] Open
Abstract
Early responses mounted by both tissue-resident and recruited innate immune cells are essential for host defense against bacterial pathogens. In particular, both neutrophils and Ly6Chi monocytes are rapidly recruited to sites of infection. While neutrophils and monocytes produce bactericidal molecules, such as reactive nitrogen and oxygen species, both cell types are also capable of synthesizing overlapping sets of cytokines important for host defense. Whether neutrophils and monocytes perform redundant or non-redundant functions in the generation of anti-microbial cytokine responses remains elusive. Here, we sought to define the contributions of neutrophils and Ly6Chi monocytes to cytokine production and host defense during pulmonary infection with Legionella pneumophila, responsible for the severe pneumonia Legionnaires' disease. We found that both neutrophils and monocytes are critical for host defense against L. pneumophila. Both monocytes and neutrophils contribute to maximal IL-12 and IFNγ responses, and monocytes are also required for TNF production. Moreover, natural killer (NK) cells, NKT cells, and γδ T cells are sources of IFNγ, and monocytes direct IFNγ production by these cell types. Thus, neutrophils and monocytes cooperate in eliciting an optimal cytokine response that promotes effective control of bacterial infection.
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Affiliation(s)
- Cierra N. Casson
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Jessica L. Doerner
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Alan M. Copenhaver
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Jasmine Ramirez
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Alicia M. Holmgren
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Mark A. Boyer
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Ingharan J. Siddarthan
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Sara H. Rouhanifard
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Arjun Raj
- Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Sunny Shin
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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