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Cerier E, Kurihara C, Kaiho T, Toyoda T, Manerikar A, Kandula V, Thomae B, Yagi Y, Yeldandi A, Kim S, Avella-Patino D, Pandolfino J, Perlman H, Singer B, Scott Budinger GR, Lung K, Alexiev B, Bharat A. Temporal correlation between postreperfusion complement deposition and severe primary graft dysfunction in lung allografts. Am J Transplant 2024; 24:577-590. [PMID: 37977230 PMCID: PMC10982049 DOI: 10.1016/j.ajt.2023.11.006] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 11/07/2023] [Accepted: 11/12/2023] [Indexed: 11/19/2023]
Abstract
Growing evidence implicates complement in the pathogenesis of primary graft dysfunction (PGD). We hypothesized that early complement activation postreperfusion could predispose to severe PGD grade 3 (PGD-3) at 72 hours, which is associated with worst posttransplant outcomes. Consecutive lung transplant patients (n = 253) from January 2018 through June 2023 underwent timed open allograft biopsies at the end of cold ischemia (internal control) and 30 minutes postreperfusion. PGD-3 at 72 hours occurred in 14% (35/253) of patients; 17% (44/253) revealed positive C4d staining on postreperfusion allograft biopsy, and no biopsy-related complications were encountered. Significantly more patients with PGD-3 at 72 hours had positive C4d staining at 30 minutes postreperfusion compared with those without (51% vs 12%, P < .001). Conversely, patients with positive C4d staining were significantly more likely to develop PGD-3 at 72 hours (41% vs 8%, P < .001) and experienced worse long-term outcomes. In multivariate logistic regression, positive C4d staining remained highly predictive of PGD-3 (odds ratio 7.92, 95% confidence interval 2.97-21.1, P < .001). Hence, early complement deposition in allografts is highly predictive of PGD-3 at 72 hours. Our data support future studies to evaluate the role of complement inhibition in patients with early postreperfusion complement activation to mitigate PGD and improve transplant outcomes.
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Affiliation(s)
- Emily Cerier
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Chitaru Kurihara
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Taisuke Kaiho
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Takahide Toyoda
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Adwaiy Manerikar
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Viswajit Kandula
- Department of Cardiothoracic Surgery, Columbia University Irving Medical Center, New York, New York, USA
| | - Benjamin Thomae
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Yuriko Yagi
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Anjana Yeldandi
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Samuel Kim
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Diego Avella-Patino
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - John Pandolfino
- Department of Gastroenterology and Hepatology Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Harris Perlman
- Department of Rheumatology Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Benjamin Singer
- Department of Pulmonary and Critical Care Northwestern University Feinberg School of Medicine, Chicago, Illinois USA
| | - G R Scott Budinger
- Department of Pulmonary and Critical Care Northwestern University Feinberg School of Medicine, Chicago, Illinois USA
| | - Kalvin Lung
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Borislav Alexiev
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Ankit Bharat
- Department of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
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2
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Janetos TM, Goldstein DA, Yeldandi A, Kurup SP, Bhat P. Multimodal imaging of an acute presentation of ocular histoplasmosis syndrome in an immunocompetent patient. Am J Ophthalmol Case Rep 2023; 32:101896. [PMID: 37546375 PMCID: PMC10400860 DOI: 10.1016/j.ajoc.2023.101896] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 07/04/2023] [Accepted: 07/19/2023] [Indexed: 08/08/2023] Open
Abstract
Purpose Presumed ocular histoplasmosis syndrome (POHS) is a posterior segment disorder that is usually subclinical unless choroidal neovascular membrane (CNVM) develops. It is thought to be the sequela of a prior systemic infection with Histoplasma capsulatum, and evidence supporting this association is based on epidemiologic, animal, and few enucleation studies. Acute presentation of chorioretinal involvement during an initial histoplasmosis systemic infection in immunocompetent patients is rarely reported, presumably due to the usual lack of or minimal symptoms of both the systemic and ocular disease. We report on an immunocompetent male with choroidal lesions detected during disseminated histoplasmosis infection and characterize the lesions using multimodal imaging. Observations A 17-year-old male presented when routine optometry screening detected two deep, yellowish-white lesions in the left fundus. Optical coherence tomography (OCT) imaging confirmed a choroidal mass with extension through Bruch's membrane into the subretinal space and a small amount of subretinal fluid. Fluorescein angiography was suggestive of CNVM. There were no clinical findings of intraocular inflammation, and the patient was initially lost to follow-up. Eight weeks after last follow-up, the patient presented to the emergency department with fatigue, mild respiratory symptoms, and abdominal pain for the last month. Imaging revealed a mediastinal mass with hilar extension and innumerable nodules throughout the lung and spleen. Serum Histoplasma IgM/IgG were positive, and biopsy of the mediastinal mass revealed Histoplasma organisms. The patient was treated with antifungals and discharged. The patient underwent an extensive immunologic evaluation while admitted, which did not reveal an underlying immunodeficiency. On last follow-up, the choroidal lesions were smaller and more consolidated, and the subretinal fluid had resolved. Conclusions and Importance We present a patient with choroidal lesions in the setting of disseminated systemic histoplasmosis infection and characterize a lesion using multimodal imaging. The presentation of acute chorioretinal lesions in the setting of biopsy proven systemic Histoplasma infection supports H. capsulatum as the etiology of POHS.
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Affiliation(s)
- Timothy M. Janetos
- Northwestern University Feinberg School of Medicine, Department of Ophthalmology, Chicago, IL, USA
| | - Debra A. Goldstein
- Northwestern University Feinberg School of Medicine, Department of Ophthalmology, Chicago, IL, USA
| | - Anjana Yeldandi
- Northwestern University Feinberg School of Medicine, Department of Pathology, Chicago, IL, USA
| | - Sudhi P. Kurup
- Northwestern University Feinberg School of Medicine, Department of Ophthalmology, Chicago, IL, USA
- Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
| | - Pooja Bhat
- University of Illinois Eye and Ear Infirmary, Chicago, IL, USA
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3
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Wang W, Bale S, Wei J, Yalavarthi B, Bhattacharyya D, Yan JJ, Abdala-Valencia H, Xu D, Sun H, Marangoni RG, Herzog E, Berdnikovs S, Miller SD, Sawalha AH, Tsou PS, Awaji K, Yamashita T, Sato S, Asano Y, Tiruppathi C, Yeldandi A, Schock BC, Bhattacharyya S, Varga J. Author Correction: Fibroblast A20 governs fibrosis susceptibility and its repression by DREAM promotes fibrosis in multiple organs. Nat Commun 2023; 14:523. [PMID: 36720888 PMCID: PMC9889748 DOI: 10.1038/s41467-023-36285-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- Wenxia Wang
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA
| | - Swarna Bale
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jun Wei
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA
| | - Bharath Yalavarthi
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Dibyendu Bhattacharyya
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jing Jing Yan
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA
| | - Hiam Abdala-Valencia
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Dan Xu
- Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Hanshi Sun
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Roberta G Marangoni
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA
| | - Erica Herzog
- Department of Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Sergejs Berdnikovs
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Stephen D Miller
- Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Amr H Sawalha
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Pei-Suen Tsou
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Kentaro Awaji
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Takashi Yamashita
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Shinichi Sato
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Yoshihide Asano
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Chinnaswamy Tiruppathi
- Department of Pharmacology and Center for Lung and Vascular Biology, College of Medicine, University of Illinois, Chicago, IL, USA
| | - Anjana Yeldandi
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Bettina C Schock
- Wellcome-Wolfson Institute for Experimental Medicine, Queens University Belfast, Belfast, UK
| | - Swati Bhattacharyya
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA.
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.
| | - John Varga
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA.
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.
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4
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Wang W, Bale S, Wei J, Yalavarthi B, Bhattacharyya D, Yan JJ, Abdala-Valencia H, Xu D, Sun H, Marangoni RG, Herzog E, Berdnikovs S, Miller SD, Sawalha AH, Tsou PS, Awaji K, Yamashita T, Sato S, Asano Y, Tiruppathi C, Yeldandi A, Schock BC, Bhattacharyya S, Varga J. Fibroblast A20 governs fibrosis susceptibility and its repression by DREAM promotes fibrosis in multiple organs. Nat Commun 2022; 13:6358. [PMID: 36289219 PMCID: PMC9606375 DOI: 10.1038/s41467-022-33767-y] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 09/29/2022] [Indexed: 02/04/2023] Open
Abstract
In addition to autoimmune and inflammatory diseases, variants of the TNFAIP3 gene encoding the ubiquitin-editing enzyme A20 are also associated with fibrosis in systemic sclerosis (SSc). However, it remains unclear how genetic factors contribute to SSc pathogenesis, and which cell types drive the disease due to SSc-specific genetic alterations. We therefore characterize the expression, function, and role of A20, and its negative transcriptional regulator DREAM, in patients with SSc and disease models. Levels of A20 are significantly reduced in SSc skin and lungs, while DREAM is elevated. In isolated fibroblasts, A20 mitigates ex vivo profibrotic responses. Mice haploinsufficient for A20, or harboring fibroblasts-specific A20 deletion, recapitulate major pathological features of SSc, whereas DREAM-null mice with elevated A20 expression are protected. In DREAM-null fibroblasts, TGF-β induces the expression of A20, compared to wild-type fibroblasts. An anti-fibrotic small molecule targeting cellular adiponectin receptors stimulates A20 expression in vitro in wild-type but not A20-deficient fibroblasts and in bleomycin-treated mice. Thus, A20 has a novel cell-intrinsic function in restraining fibroblast activation, and together with DREAM, constitutes a critical regulatory network governing the fibrotic process in SSc. A20 and DREAM represent novel druggable targets for fibrosis therapy.
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Affiliation(s)
- Wenxia Wang
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA
| | - Swarna Bale
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jun Wei
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA
| | - Bharath Yalavarthi
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Dibyendu Bhattacharyya
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jing Jing Yan
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA
| | - Hiam Abdala-Valencia
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Dan Xu
- Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Hanshi Sun
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Roberta G Marangoni
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA
| | - Erica Herzog
- Department of Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Sergejs Berdnikovs
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Stephen D Miller
- Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Amr H Sawalha
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Pei-Suen Tsou
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Kentaro Awaji
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Takashi Yamashita
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Shinichi Sato
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Yoshihide Asano
- Department of Dermatology, University of Tokyo Graduate School of Medicine, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Chinnaswamy Tiruppathi
- Department of Pharmacology and Center for Lung and Vascular Biology, College of Medicine, University of Illinois, Chicago, IL, USA
| | - Anjana Yeldandi
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA
| | - Bettina C Schock
- Wellcome-Wolfson Institute for Experimental Medicine, Queens University Belfast, Belfast, UK
| | - Swati Bhattacharyya
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA.
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.
| | - John Varga
- Northwestern Scleroderma Program, Department of Medicine, Feinberg School of Medicine, Chicago, IL, USA.
- Michigan Scleroderma Program, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.
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5
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Yang W, Cerier EJ, Núñez-Santana FL, Wu Q, Yan Y, Kurihara C, Liu X, Yeldandi A, Khurram N, Avella-Patino D, Sun H, Budinger GS, Kreisel D, Mohanakumar T, Lecuona E, Bharat A. IL-1β-dependent extravasation of preexisting lung-restricted autoantibodies during lung transplantation activates complement and mediates primary graft dysfunction. J Clin Invest 2022; 132:157975. [PMID: 36250462 PMCID: PMC9566897 DOI: 10.1172/jci157975] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022] Open
Abstract
Preexisting lung-restricted autoantibodies (LRAs) are associated with a higher incidence of primary graft dysfunction (PGD), although it remains unclear whether LRAs can drive its pathogenesis. In syngeneic murine left lung transplant recipients, preexisting LRAs worsened graft dysfunction, which was evident by impaired gas exchange, increased pulmonary edema, and activation of damage-associated pathways in lung epithelial cells. LRA-mediated injury was distinct from ischemia-reperfusion injury since deletion of donor nonclassical monocytes and host neutrophils could not prevent graft dysfunction in LRA-pretreated recipients. Whole LRA IgG molecules were necessary for lung injury, which was mediated by the classical and alternative complement pathways and reversed by complement inhibition. However, deletion of Fc receptors in donor macrophages or mannose-binding lectin in recipient mice failed to rescue lung function. LRA-mediated injury was localized to the transplanted lung and dependent on IL-1β-mediated permeabilization of pulmonary vascular endothelium, which allowed extravasation of antibodies. Genetic deletion or pharmacological inhibition of IL-1R in the donor lungs prevented LRA-induced graft injury. In humans, preexisting LRAs were an independent risk factor for severe PGD and could be treated with plasmapheresis and complement blockade. We conclude that preexisting LRAs can compound ischemia-reperfusion injury to worsen PGD for which complement inhibition may be effective.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - G.R. Scott Budinger
- Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Daniel Kreisel
- Departments of Surgery, Pathology & Immunology, Washington University, St. Louis, Missouri, USA
| | | | | | - Ankit Bharat
- Division of Thoracic Surgery
- Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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6
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Teplensky MH, Distler ME, Kusmierz CD, Evangelopoulos M, Gula H, Elli D, Tomatsidou A, Nicolaescu V, Gelarden I, Yeldandi A, Batlle D, Missiakas D, Mirkin CA. Spherical nucleic acids as an infectious disease vaccine platform. Proc Natl Acad Sci U S A 2022; 119:e2119093119. [PMID: 35312341 PMCID: PMC9168922 DOI: 10.1073/pnas.2119093119] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [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: 10/18/2021] [Accepted: 01/05/2022] [Indexed: 12/17/2022] Open
Abstract
SignificanceUsing SARS-CoV-2 as a relevant case study for infectious disease, we investigate the structure-function relationships that dictate antiviral spherical nucleic acid (SNA) vaccine efficacy. We show that the SNA architecture can be rapidly employed to target COVID-19 through incorporation of the receptor-binding domain, and that the resulting vaccine potently activates human cells in vitro and mice in vivo. Furthermore, when challenged with a lethal viral infection, only mice treated with the SNA vaccine survived. Taken together, this work underscores the importance of rational vaccine design for infectious disease to yield vaccines that elicit more potent immune responses to effectively fight disease.
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Affiliation(s)
- Michelle H. Teplensky
- Department of Chemistry, Northwestern University, Evanston, IL 60208
- International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208
| | - Max E. Distler
- Department of Chemistry, Northwestern University, Evanston, IL 60208
- International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208
| | - Caroline D. Kusmierz
- Department of Chemistry, Northwestern University, Evanston, IL 60208
- International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208
| | | | - Haley Gula
- Howard T. Ricketts Laboratory, Department of Microbiology, University of Chicago, Chicago, IL 60637
| | - Derek Elli
- Howard T. Ricketts Laboratory, Department of Microbiology, University of Chicago, Chicago, IL 60637
| | - Anastasia Tomatsidou
- Howard T. Ricketts Laboratory, Department of Microbiology, University of Chicago, Chicago, IL 60637
| | - Vlad Nicolaescu
- Howard T. Ricketts Laboratory, Department of Microbiology, University of Chicago, Chicago, IL 60637
| | - Ian Gelarden
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Anjana Yeldandi
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Daniel Batlle
- Division of Nephrology and Hypertension, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Dominique Missiakas
- Howard T. Ricketts Laboratory, Department of Microbiology, University of Chicago, Chicago, IL 60637
| | - Chad A. Mirkin
- Department of Chemistry, Northwestern University, Evanston, IL 60208
- International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208
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7
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Hassler L, Wysocki J, Gelarden I, Sharma I, Tomatsidou A, Ye M, Gula H, Nicolaescu V, Randall G, Pshenychnyi S, Khurram N, Kanwar Y, Missiakas D, Henkin J, Yeldandi A, Batlle D. A Novel Soluble ACE2 Protein Provides Lung and Kidney Protection in Mice Susceptible to Lethal SARS-CoV-2 Infection. J Am Soc Nephrol 2022; 33:1293-1307. [PMID: 35236774 PMCID: PMC9257820 DOI: 10.1681/asn.2021091209] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 02/06/2022] [Indexed: 11/03/2022] Open
Abstract
Background: Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) uses full-length angiotensin converting enzyme 2 (ACE2) as a main receptor to enter target cells. The goal of this study was to demonstrate the preclinical efficacy of a novel soluble ACE2 protein with increased duration of action and binding capacity in a lethal mouse model of COVID-19. Methods: A human soluble ACE2 variant fused with an albumin binding domain (ABD) was linked via a dimerization motif hinge-like 4-cysteine dodecapeptide (DDC) to improve binding capacity to SARS-CoV-2. This novel soluble ACE2 protein (ACE2 1-618-DDC-ABD) was then administered intranasally and intraperitoneally to mice prior to intranasal inoculation of SARS-CoV-2 and then for two additional days post viral inoculation. Results: Untreated animals became severely ill and all had to be humanely euthanized by day 6/7 and had pulmonary alveolar hemorrhage with mononuclear infiltrates. In contrast, all but one mouse infected with a lethal dose of SARS-CoV-2 that received ACE2-1-618-DDC-ABD survived. In the animals inoculated with SARS-CoV-2 that were untreated, viral titers were high in the lungs and brain but virus was absent in the kidneys. However, some untreated animals had variable degrees of kidney proximal tubular injury with increased NGAL and TUNEL staining indicating attenuation of the proximal tubular brush border. In contrast, viral titers in the lung and brain were reduced or non-detectable in mice that received ACE2 1-618 DDCABD, and the animals developed only moderate disease as assessed by a near-normal clinical score, minimal weight loss, and improved lung and kidney injury Conclusions: This study demonstrates the preclinical efficacy of a novel soluble ACE2 protein, termed ACE2 1- 618-DDC-ABD, in a lethal mouse model of SARS-CoV-2 infection that causes severe lung injury as well as variable degrees of moderate proximal tubular injury.
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Affiliation(s)
- Luise Hassler
- L Hassler, Division of Nephrology/Hypertension, Department of Medicine and the Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Jan Wysocki
- J Wysocki, Division of Nephrology/Hypertension, Department of Medicine and the Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Ian Gelarden
- I Gelarden, Division of Nephrology/Hypertension, Department of Medicine and the Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Isha Sharma
- I Sharma, Division of Nephrology/Hypertension, Department of Medicine and the Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Anastasia Tomatsidou
- A Tomatsidou, Department of Microbiology, The University of Chicago, Chicago, United States
| | - Minghao Ye
- M Ye, Division of Nephrology/Hypertension, Department of Medicine and the Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Haley Gula
- H Gula, Department of Microbiology, The University of Chicago, Chicago, United States
| | - Vlad Nicolaescu
- V Nicolaescu, Department of Microbiology, The University of Chicago, Chicago, United States
| | - Glenn Randall
- G Randall, Department of Microbiology, The University of Chicago, Chicago, United States
| | - Sergii Pshenychnyi
- S Pshenychnyi, Recombinant Protein Production Core, Northwestern University, Evanston, United States
| | - Nigar Khurram
- N Khurram, Division of Nephrology/Hypertension, Department of Medicine and the Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Yashpal Kanwar
- Y Kanwar, Division of Nephrology/Hypertension, Department of Medicine and the Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Dominique Missiakas
- D Missiakas, Department of Microbiology, The University of Chicago, Chicago, United States
| | - Jack Henkin
- J Henkin, Center for Developmental Therapeutics, Northwestern University, Evanston, United States
| | - Anjana Yeldandi
- A Yeldandi, Division of Nephrology/Hypertension, Department of Medicine and the Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, United States
| | - Daniel Batlle
- D Batlle, Division of Nephrology/Hypertension, Department of Medicine and the Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, United States
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8
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Kurihara C, Manerikar A, Querrey M, Felicelli C, Yeldandi A, Garza-Castillon R, Lung K, Kim S, Ho B, Tomic R, Arunachalam A, Budinger GRS, Pesce L, Bharat A. Clinical Characteristics and Outcomes of Patients With COVID-19-Associated Acute Respiratory Distress Syndrome Who Underwent Lung Transplant. JAMA 2022; 327:652-661. [PMID: 35085383 PMCID: PMC8796055 DOI: 10.1001/jama.2022.0204] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 01/07/2022] [Indexed: 02/03/2023]
Abstract
Importance Lung transplantation is a potentially lifesaving treatment for patients who are critically ill due to COVID-19-associated acute respiratory distress syndrome (ARDS), but there is limited information about the long-term outcome. Objective To report the clinical characteristics and outcomes of patients who had COVID-19-associated ARDS and underwent a lung transplant at a single US hospital. Design, Setting, and Participants Retrospective case series of 102 consecutive patients who underwent a lung transplant at Northwestern University Medical Center in Chicago, Illinois, between January 21, 2020, and September 30, 2021, including 30 patients who had COVID-19-associated ARDS. The date of final follow-up was November 15, 2021. Exposures Lung transplant. Main Outcomes and Measures Demographic, clinical, laboratory, and treatment data were collected and analyzed. Outcomes of lung transplant, including postoperative complications, intensive care unit and hospital length of stay, and survival, were recorded. Results Among the 102 lung transplant recipients, 30 patients (median age, 53 years [range, 27 to 62]; 13 women [43%]) had COVID-19-associated ARDS and 72 patients (median age, 62 years [range, 22 to 74]; 32 women [44%]) had chronic end-stage lung disease without COVID-19. For lung transplant recipients with COVID-19 compared with those without COVID-19, the median lung allocation scores were 85.8 vs 46.7, the median time on the lung transplant waitlist was 11.5 vs 15 days, and preoperative venovenous extracorporeal membrane oxygenation (ECMO) was used in 56.7% vs 1.4%, respectively. During transplant, patients who had COVID-19-associated ARDS received transfusion of a median of 6.5 units of packed red blood cells vs 0 in those without COVID-19, 96.7% vs 62.5% underwent intraoperative venoarterial ECMO, and the median operative time was 8.5 vs 7.4 hours, respectively. Postoperatively, the rates of primary graft dysfunction (grades 1 to 3) within 72 hours were 70% in the COVID-19 cohort vs 20.8% in those without COVID-19, the median time receiving invasive mechanical ventilation was 6.5 vs 2.0 days, the median duration of intensive care unit stay was 18 vs 9 days, the median post-lung transplant hospitalization duration was 28.5 vs 16 days, and 13.3% vs 5.5% required permanent hemodialysis, respectively. None of the lung transplant recipients who had COVID-19-associated ARDS demonstrated antibody-mediated rejection compared with 12.5% in those without COVID-19. At follow-up, all 30 lung transplant recipients who had COVID-19-associated ARDS were alive (median follow-up, 351 days [IQR, 176-555] after transplant) vs 60 patients (83%) who were alive in the non-COVID-19 cohort (median follow-up, 488 days [IQR, 368-570] after lung transplant). Conclusions and Relevance In this single-center case series of 102 consecutive patients who underwent a lung transplant between January 21, 2020, and September 30, 2021, survival was 100% in the 30 patients who had COVID-19-associated ARDS as of November 15, 2021.
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Affiliation(s)
- Chitaru Kurihara
- Division of Thoracic Surgery, Northwestern University, Chicago, Illinois
| | - Adwaiy Manerikar
- Division of Thoracic Surgery, Northwestern University, Chicago, Illinois
| | - Melissa Querrey
- Division of Thoracic Surgery, Northwestern University, Chicago, Illinois
| | | | - Anjana Yeldandi
- Department of Pathology, Northwestern University, Chicago, Illinois
| | | | - Kalvin Lung
- Division of Thoracic Surgery, Northwestern University, Chicago, Illinois
| | - Samuel Kim
- Division of Thoracic Surgery, Northwestern University, Chicago, Illinois
| | - Bing Ho
- Division of Nephrology, Northwestern University, Chicago, Illinois
| | - Rade Tomic
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois
| | - Ambalavanan Arunachalam
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois
| | - G. R. Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Northwestern University, Chicago, Illinois
| | - Lorenzo Pesce
- Division of Thoracic Surgery, Northwestern University, Chicago, Illinois
| | - Ankit Bharat
- Division of Thoracic Surgery, Northwestern University, Chicago, Illinois
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9
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Xu D, Bhattacharyya S, Wang W, Ifergan I, Chiang Wong MYA, Procissi D, Yeldandi A, Bale S, Marangoni RG, Horbinski C, Miller SD, Varga J. PLG nanoparticles target fibroblasts and MARCO+ monocytes to reverse multi-organ fibrosis. JCI Insight 2022; 7:151037. [PMID: 35104243 PMCID: PMC8983146 DOI: 10.1172/jci.insight.151037] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 05/03/2021] [Accepted: 01/26/2022] [Indexed: 11/17/2022] Open
Abstract
Systemic sclerosis (SSc) is a chronic, multisystem orphan disease with a highly variable clinical course, high mortality rate, and a poorly understood complex pathogenesis. We have identified an important role for a subpopulation of monocytes and macrophages characterized by surface expression of the scavenger receptor macrophage receptor with collagenous structure (MARCO) in chronic inflammation and fibrosis in SSc and in preclinical disease models. We show that MARCO+ monocytes and macrophages accumulate in lesional skin and lung in topographic proximity to activated myofibroblasts in patients with SSc and in the bleomycin-induced mouse model of SSc. Short-term treatment of mice with a potentially novel nanoparticle, poly(lactic-co-glycolic) acid (PLG), which is composed of a carboxylated, FDA-approved, biodegradable polymer and modulates activation and trafficking of MARCO+ inflammatory monocytes, markedly attenuated bleomycin-induced skin and lung inflammation and fibrosis. Mechanistically, in isolated cells in culture, PLG nanoparticles inhibited TGF-dependent fibrotic responses in vitro. Thus, MARCO+ monocytes are potent effector cells of skin and lung fibrosis and can be therapeutically targeted in SSc using PLG nanoparticles.
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Affiliation(s)
- Dan Xu
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, United States of America
| | - Swati Bhattacharyya
- Department of Internal Medicine, University of Michigan, Ann Arbor, United States of America
| | - Wenxia Wang
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, United States of America
| | - Igal Ifergan
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, United States of America
| | - Ming-Yi Alice Chiang Wong
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, United States of America
| | - Daniele Procissi
- Feinberg School of Medicine, Northwestern University, Chicago, United States of America
| | - Anjana Yeldandi
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, United States of America
| | - Swarna Bale
- Department of Internal Medicine, University of Michigan, Ann Arbor, United States of America
| | - Roberta G Marangoni
- Northwestern Scleroderma Program, Feinberg School of Medicine, Northwestern University, Chicago, United States of America
| | - Craig Horbinski
- Department of Neurological Surgery, Feinberg School of Medicine, Northwestern University, Chicago, United States of America
| | - Stephen D Miller
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, United States of America
| | - John Varga
- Department of Internal Medicine, University of Michigan, Ann Arbor, United States of America
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10
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Querrey M, Kurihara C, Manerikar A, Garza-Castillon R, Lysne J, Tomic R, Budinger GRS, Kim S, Lung K, Yeldandi A, Bharat A. Lung donation following SARS-CoV-2 infection. Am J Transplant 2021; 21:4073-4078. [PMID: 34332512 PMCID: PMC8441925 DOI: 10.1111/ajt.16777] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 02/03/2023]
Abstract
There have been over 177 million cases of COVID-19 worldwide, many of whom could be organ donors. Concomitantly, there is an anticipated increase in the need for donor lungs due to expanding indications. Given that the respiratory tract is most commonly affected by COVID-19, there is an urgent need to develop donor assessment criteria while demonstrating safety and "efficacy" of lung donation following COVID-19 infection. Accordingly, we report an intentional transplant using lungs from a donor with recent, microbiologically confirmed, COVID-19 infection into a recipient suffering from COVID-19 induced ARDS and pulmonary fibrosis. In addition to the standard clinical assays, both donor and recipient lungs were analyzed using RNAscope, which confirmed that tissues were negative for SARS-CoV-2. Immunohistochemistry demonstrated colocalized KRT17+ basaloid-like epithelium and COL1A1+ fibroblasts, a marker suggestive of lung fibrosis in COVID-19 associated lung disease, in the explanted recipient lungs but absent in the donor lungs. We demonstrate that following a thorough assessment, lung donation following resolved COVID-19 infection is safe and feasible.
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Affiliation(s)
- Melissa Querrey
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Chitaru Kurihara
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Adwaiy Manerikar
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Rafael Garza-Castillon
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Jeffrey Lysne
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Rade Tomic
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - GR Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Samuel Kim
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Kalvin Lung
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Anjana Yeldandi
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Ankit Bharat
- Division of Thoracic Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA,Division of Pulmonary and Critical Care Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA,Correspondence Ankit Bharat, Divisions of Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
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11
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Riaz A, Portocarrero JP, Hoel A, Yeldandi A, Dellefave-Castillo L, Paparello J, D Amico JD, Wilsbacher LD. COL3A1 Missense Variant in a Patient Presenting With Hemoptysis. Circ Genom Precis Med 2021; 14:e003386. [PMID: 34587764 DOI: 10.1161/circgen.121.003386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Ahsun Riaz
- Department of Radiology (A.R.), Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Juan Pablo Portocarrero
- Department of Medicine (J.P.P., J.P., J.D.D., L.D.W.), Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Andrew Hoel
- Department of Surgery (A.H.), Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Anjana Yeldandi
- Department of Pathology (A.Y.), Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Lisa Dellefave-Castillo
- Center for Genomic Medicine (L.D.-C.), Northwestern University Feinberg School of Medicine, Chicago, IL
| | - James Paparello
- Department of Medicine (J.P.P., J.P., J.D.D., L.D.W.), Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Jane DeMatte D Amico
- Department of Medicine (J.P.P., J.P., J.D.D., L.D.W.), Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Lisa D Wilsbacher
- Department of Medicine (J.P.P., J.P., J.D.D., L.D.W.), Northwestern University Feinberg School of Medicine, Chicago, IL.,Feinberg Cardiovascular and Renal Research Institute (L.D.W.), Northwestern University Feinberg School of Medicine, Chicago, IL.,Department of Pharmacology (L.D.W.), Northwestern University Feinberg School of Medicine, Chicago, IL
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12
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Chornenkyy Y, Mejia-Bautista M, Brucal M, Blanke T, Dittmann D, Yeldandi A, Boike JR, Lomasney JW, Nayar R, Jennings LJ, Pezhouh MK. Liver Pathology and SARS-CoV-2 Detection in Formalin-Fixed Tissue of Patients With COVID-19. Am J Clin Pathol 2021; 155:802-814. [PMID: 33914058 PMCID: PMC8135761 DOI: 10.1093/ajcp/aqab009] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [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] [Indexed: 02/07/2023] Open
Abstract
Objectives The novel coronavirus, severe acute respiratory syndrome coronavirus 2, causing coronavirus disease 2019 (COVID-19) remains a global health threat and a significant source of human morbidity and mortality. While the virus primarily induces lung injury, it also has been reported to cause hepatic sequelae. Methods We aimed to detect the virus in formalin-fixed tissue blocks and document the liver injury patterns in patients with COVID-19 compared with a control group. Results We were able to detect viral RNA in the bronchioalveolar cell blocks (12/12, 100%) and formalin-fixed, paraffin-embedded tissue of the lung (8/8, 100%) and liver (4/9, 44%) of patients with COVID-19. Although the peak values of the main liver enzymes and bilirubin were higher in the patients with COVID-19 compared with the control group, the differences were not significant. The main histologic findings were minimal to focal mild portal tract chronic inflammation (7/8, 88%, P < .05) and mild focal lobular activity (6/8, 75%, P = .06). Conclusions We found that most patients who died of COVID-19 had evidence of mild focal hepatitis clinically and histologically; however, the virus was detected in less than half of the cases.
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Affiliation(s)
| | | | | | | | | | | | | | - Jon W Lomasney
- Departments of Pathology, Chicago, IL, USA
- Pharmacology, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
| | - Ritu Nayar
- Departments of Pathology, Chicago, IL, USA
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13
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Hassler L, Wysocki J, Gelarden I, Tomatsidou A, Gula H, Nicoleascu V, Randall G, Henkin J, Yeldandi A, Batlle D. A novel soluble ACE2 protein totally protects from lethal disease caused by SARS-CoV-2 infection. bioRxiv 2021. [PMID: 33758841 DOI: 10.1101/2021.03.12.435191] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) uses full-length angiotensin converting enzyme 2 (ACE2), which is membrane bound, as its initial cell contact receptor preceding viral entry. Here we report a human soluble ACE2 variant fused with a 5kD albumin binding domain (ABD) and bridged via a dimerization motif hinge-like 4-cysteine dodecapeptide, which we term ACE2 1-618-DDC-ABD. This protein is enzymatically active, has increased duration of action in vivo conferred by the ABD-tag, and displays 20-30-fold higher binding affinity to the SARS-CoV-2 receptor binding domain than its des-DDC monomeric form (ACE2 1-618-ABD) due to DDC-linked dimerization. ACE2 1-618-DDC-ABD was administered for 3 consecutive days to transgenic k18-hACE2 mice, a model that develops lethal SARS-CoV-2 infection, to evaluate the preclinical preventative/ therapeutic value for COVID-19. Mice treated with ACE2 1-618-DDC-ABD developed a mild to moderate disease for the first few days assessed by a clinical score and modest weight loss. The untreated control animals, by contrast, became severely ill and had to be sacrificed by day 6/7 and lung histology revealed extensive pulmonary alveolar hemorrhage and mononuclear infiltrates. At 6 days, mortality was totally prevented in the treated group, lung histopathology was improved and viral titers markedly reduced. This demonstrates for the first time in vivo the preventative/ therapeutic potential of a novel soluble ACE2 protein in a preclinical animal model.
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14
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Lee S, Chornenkyy Y, Swete MT, Kim SS, Bharat A, Yang XJ, Yeldandi A. Malignant melanoma arising in a primary mediastinal germ cell tumor. Pathol Res Pract 2020; 216:153210. [PMID: 32950894 DOI: 10.1016/j.prp.2020.153210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 11/28/2022]
Abstract
Primary mediastinal germ cell tumors with somatic malignancies are rare. We report a case of a 34-year old man with melanoma arising in a primary mediastinal mixed germ cell tumor. On initial biopsy, the patient was found to have a germ cell tumor containing yolk sac and embryonal components only. After chemotherapy, histopathological evaluation of the residual tumor in the wide local resection specimen revealed a mature teratoma with melanoma. Molecular studies demonstrated that the residual germ cell tumor harbored KIT and NRAS mutations associated with malignant melanoma.
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Affiliation(s)
- Sherry Lee
- Department of Pathology, Northwestern University Feinberg School of Medicine, 303 E Chicago Ave, Chicago, IL, 60611, USA.
| | - Yevgen Chornenkyy
- Department of Pathology, Northwestern University Feinberg School of Medicine, 303 E Chicago Ave, Chicago, IL, 60611, USA
| | - Michael T Swete
- Department of Pathology, Northwestern University Feinberg School of Medicine, 303 E Chicago Ave, Chicago, IL, 60611, USA
| | - Samuel S Kim
- Division of Thoracic Surgery, Northwestern University Feinberg School of Medicine, 676 N St Clair St, Chicago, IL, 60611, USA
| | - Ankit Bharat
- Division of Thoracic Surgery, Northwestern University Feinberg School of Medicine, 676 N St Clair St, Chicago, IL, 60611, USA
| | - Ximing J Yang
- Department of Pathology, Northwestern University Feinberg School of Medicine, 303 E Chicago Ave, Chicago, IL, 60611, USA
| | - Anjana Yeldandi
- Department of Pathology, Northwestern University Feinberg School of Medicine, 303 E Chicago Ave, Chicago, IL, 60611, USA
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15
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Kim SJ, Cheresh P, Jablonski RP, Rachek L, Yeldandi A, Piseaux-Aillon R, Ciesielski MJ, Ridge K, Gottardi C, Lam AP, Pardo A, Selman M, Natarajan V, Kamp DW. Mitochondrial 8-oxoguanine DNA glycosylase mitigates alveolar epithelial cell PINK1 deficiency, mitochondrial DNA damage, apoptosis, and lung fibrosis. Am J Physiol Lung Cell Mol Physiol 2020; 318:L1084-L1096. [PMID: 32209025 DOI: 10.1152/ajplung.00069.2019] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 12/14/2022] Open
Abstract
Alveolar epithelial cell (AEC) apoptosis, arising from mitochondrial dysfunction and mitophagy defects, is important in mediating idiopathic pulmonary fibrosis (IPF). Our group established a role for the mitochondrial (mt) DNA base excision repair enzyme, 8-oxoguanine-DNA glycosylase 1 (mtOGG1), in preventing oxidant-induced AEC mtDNA damage and apoptosis and showed that OGG1-deficient mice have increased lung fibrosis. Herein, we determined whether mice overexpressing the mtOGG1 transgene (mtOgg1tg) are protected against lung fibrosis and whether AEC mtOGG1 preservation of mtDNA integrity mitigates phosphatase and tensin homolog-induced putative kinase 1 (PINK1) deficiency and apoptosis. Compared with wild type (WT), mtOgg1tg mice have diminished asbestos- and bleomycin-induced pulmonary fibrosis that was accompanied by reduced lung and AEC mtDNA damage and apoptosis. Asbestos and H2O2 promote the MLE-12 cell PINK1 deficiency, as assessed by reductions in the expression of PINK1 mRNA and mitochondrial protein expression. Compared with WT, Pink1-knockout (Pink1-KO) mice are more susceptible to asbestos-induced lung fibrosis and have increased lung and alveolar type II (AT2) cell mtDNA damage and apoptosis. AT2 cells from Pink1-KO mice and PINK1-silenced (siRNA) MLE-12 cells have increased mtDNA damage that is augmented by oxidative stress. Interestingly, mtOGG1 overexpression attenuates oxidant-induced MLE-12 cell mtDNA damage and apoptosis despite PINK1 silencing. mtDNA damage is increased in the lungs of patients with IPF as compared with controls. Collectively, these findings suggest that mtOGG1 maintenance of AEC mtDNA is crucial for preventing PINK1 deficiency that promotes apoptosis and lung fibrosis. Given the key role of AEC apoptosis in pulmonary fibrosis, strategies aimed at preserving AT2 cell mtDNA integrity may be an innovative target.
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Affiliation(s)
- Seok-Jo Kim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.,Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Paul Cheresh
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.,Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Renea P Jablonski
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.,Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Lyudmila Rachek
- Department of Cell Biology and Neuroscience, University of South Alabama College of Medicine, Mobile, Alabama
| | - Anjana Yeldandi
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Raul Piseaux-Aillon
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Mark J Ciesielski
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Karen Ridge
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.,Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Cara Gottardi
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Anna P Lam
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Annie Pardo
- Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Moises Selman
- Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | | | - David W Kamp
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.,Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
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16
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Agrawal R, Yeldandi A, Savas H, Parekh ND, Lombardi PJ, Hart EM. Pulmonary Mucormycosis: Risk Factors, Radiologic Findings, and Pathologic Correlation. Radiographics 2020; 40:656-666. [PMID: 32196429 DOI: 10.1148/rg.2020190156] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Pulmonary mucormycosis (PM) is an uncommon fungal infection most often seen in immunocompromised patients. The fungus grows on decaying food, soil, and animal excrement. Patients usually become infected by inhalation of spores. The most common risk factors include diabetes mellitus, hematologic malignancy, and solid organ or stem cell transplant. PM can have a nonspecific appearance at imaging. For example, early imaging may show peribronchial ground-glass opacity. Later, the disease progresses to consolidation, nodules, or masses. Because patients are usually immunocompromised, the differential diagnosis often includes invasive pulmonary aspergillosis (IPA). Various radiologic findings suggestive of PM have been identified to help differentiate it from IPA. For example, the reverse halo sign is more closely associated with PM than with IPA. The reverse halo sign is an area of ground-glass opacity surrounded by a rim of consolidation. In addition, the presence of pleural effusions and more than 10 nodules is more suggestive of PM than it is of IPA. PM can progress rapidly in neutropenic patients. Identification of the hyphae in tissue by using endobronchial or percutaneous sampling can allow differentiation from IPA and help confirm the diagnosis of mucormycosis. Because of the high mortality rate associated with PM, early identification of the disease is critical for an improved likelihood of survival. A multimodality treatment approach with antifungal agents and surgical débridement has been shown to improve outcomes. The authors review the risk factors for PM, describe its imaging appearance and disease process, and describe the treatment of the disease. ©RSNA, 2020.
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Affiliation(s)
- Rishi Agrawal
- From the Departments of Radiology (R.A., H.S., N.D.P., P.J.L., E.M.H.) and Pathology (A.Y.), Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611
| | - Anjana Yeldandi
- From the Departments of Radiology (R.A., H.S., N.D.P., P.J.L., E.M.H.) and Pathology (A.Y.), Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611
| | - Hatice Savas
- From the Departments of Radiology (R.A., H.S., N.D.P., P.J.L., E.M.H.) and Pathology (A.Y.), Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611
| | - Nishant D Parekh
- From the Departments of Radiology (R.A., H.S., N.D.P., P.J.L., E.M.H.) and Pathology (A.Y.), Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611
| | - Pamela J Lombardi
- From the Departments of Radiology (R.A., H.S., N.D.P., P.J.L., E.M.H.) and Pathology (A.Y.), Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611
| | - Eric M Hart
- From the Departments of Radiology (R.A., H.S., N.D.P., P.J.L., E.M.H.) and Pathology (A.Y.), Northwestern University Feinberg School of Medicine, 676 N St. Clair St, Ste 800, Chicago, IL 60611
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17
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Wang W, Bhattacharyya S, Marangoni RG, Carns M, Dennis-Aren K, Yeldandi A, Wei J, Varga J. The JAK/STAT pathway is activated in systemic sclerosis and is effectively targeted by tofacitinib. J Scleroderma Relat Disord 2020; 5:40-50. [PMID: 35382402 PMCID: PMC8922593 DOI: 10.1177/2397198319865367] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 06/28/2019] [Indexed: 10/24/2023]
Abstract
RATIONALE Fibrosis leads to failure of the skin, lungs, and other organs in systemic sclerosis; accounts for substantial morbidity and mortality; and lacks effective therapy. Myofibroblast activation underlies organ fibrosis, but the key extracellular cues driving persistence of the process remain incompletely characterized. OBJECTIVES The objectives were to evaluate activation of the IL6/JAK/STAT axis associated with fibrosis in skin and lung biopsies from systemic sclerosis patients and effects of the Food and Drug Administration-approved JAK/STAT inhibitor, tofacitinib, on skin and lung fibrosis in animal models. METHODS Bioinformatic analysis showed that IL6/JAK/STAT3 and tofacitinib gene signatures were aberrant in biopsies from systemic sclerosis patients in four independent cohorts. The results were confirmed by JAK and STAT3 phosphorylation in both skin and lung biopsies from patients with systemic sclerosis. Furthermore, treatment of mice with the selective JAK inhibitor tofacitinib not only prevented bleomycin-induced skin and lung fibrosis but also reduced skin fibrosis in TSK1/+ mice. CONCLUSION These findings implicate the JAK/STAT pathway in systemic sclerosis skin and lung fibrosis and identify tofacitinib as a potential antifibrotic agent for the treatment of systemic sclerosis and other fibrotic diseases.
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Affiliation(s)
- Wenxia Wang
- Northwestern Scleroderma Program,
Division of Rheumatology, Northwestern University Feinberg School of Medicine,
Chicago, IL, USA
| | - Swati Bhattacharyya
- Northwestern Scleroderma Program,
Division of Rheumatology, Northwestern University Feinberg School of Medicine,
Chicago, IL, USA
| | - Roberta Goncalves Marangoni
- Northwestern Scleroderma Program,
Division of Rheumatology, Northwestern University Feinberg School of Medicine,
Chicago, IL, USA
| | - Mary Carns
- Northwestern Scleroderma Program,
Division of Rheumatology, Northwestern University Feinberg School of Medicine,
Chicago, IL, USA
| | - Kathleen Dennis-Aren
- Northwestern Scleroderma Program,
Division of Rheumatology, Northwestern University Feinberg School of Medicine,
Chicago, IL, USA
| | - Anjana Yeldandi
- Department of Surgical Pathology,
Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Jun Wei
- Northwestern Scleroderma Program,
Division of Rheumatology, Northwestern University Feinberg School of Medicine,
Chicago, IL, USA
| | - John Varga
- Northwestern Scleroderma Program,
Division of Rheumatology, Northwestern University Feinberg School of Medicine,
Chicago, IL, USA
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18
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Waters D, Obeidin F, Alexiev BA, Rao MS, Peabody TD, Agulnik M, Yeldandi A. Ectopic hamartomatous thymoma in an immunocompromised male. Pathol Res Pract 2019; 215:152497. [PMID: 31257088 DOI: 10.1016/j.prp.2019.152497] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/27/2019] [Accepted: 06/08/2019] [Indexed: 11/16/2022]
Abstract
Ectopic hamartomatous thymoma (EHT) is a rare benign neoplasm classically occurring in the lower neck of adult males. Here we present a case of EHT occurring in a 43-year-old immunocompromised male and a brief review of existing literature. The patient presented with a palpable mass overlying the left clavicle which, on imaging, showed a solitary nodule possibly eroding the cortical bone. A biopsy predominantly showed spindle cells that were immunopositive for keratin AE1/AE3 as well as weakly positive for CD99, SMA, and CD34. A diagnosis of synovial sarcoma was favored; at which point surgical resection was performed. The resected mass was well-demarcated with a tan-yellow cut surface. Microscopically, the lesion was composed of a mixture of spindle cells, glands, and mature adipose tissue. The spindle cells were plump with bland nuclei, and the epithelial component showed morphology similar to glands of salivary or breast tissue with a bilayered appearance (luminal and basal). No pleomorphism, mitotic figures, or necrosis was present. Immunohistochemical stains were performed and showed the spindle cells to express a myoepithelial phenotype (cytokeratin AE1/AE3, p63, calponin positive). The glands showed SMA and p63 positivity in the basal cells (similar to salivary gland and breast). Overall, given the clinical context, histomorphologic, and immunohistochemical profile, a diagnosis of EHT was made. At 12 months of follow-up there was no evidence of recurrence.
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Affiliation(s)
- David Waters
- Northwestern University, 303 E Chicago Ave Ward 3-140 W127, Chicago, 60611, United States.
| | - Farres Obeidin
- Northwestern University, 303 E Chicago Ave Ward 3-140 W127, Chicago, 60611, United States
| | - Borislav A Alexiev
- Northwestern University, 303 E Chicago Ave Ward 3-140 W127, Chicago, 60611, United States
| | - M Sambasiva Rao
- Northwestern University, 303 E Chicago Ave Ward 3-140 W127, Chicago, 60611, United States
| | - Terrance D Peabody
- Department of Orthopedic Surgery, Northwestern University Feinberg School of Medicine, 675 N Saint Clair St, Chicago, IL, 60611, United States
| | - Mark Agulnik
- Department of Internal Medicine - Medical Oncology, Northwestern University Feinberg School of Medicine, 675 N Saint Clair St, Chicago, IL, 60611, United States
| | - Anjana Yeldandi
- Northwestern University, 303 E Chicago Ave Ward 3-140 W127, Chicago, 60611, United States
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19
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Bhattacharyya S, Wang W, Yeldandi A, Goncalves Marangoni R, Feghali-Bostwick C, Wei J, Varga J. 958 Pharmacological inhibition of JAK/STAT signaling by tofacitinib prevents organ fibrosis: Novel therapy for scleroderma. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.1034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Bhattacharyya S, Wang W, Tamaki Z, Shi B, Yeldandi A, Tsukimi Y, Yamasaki M, Varga J. Pharmacological Inhibition of Toll-Like Receptor-4 Signaling by TAK242 Prevents and Induces Regression of Experimental Organ Fibrosis. Front Immunol 2018; 9:2434. [PMID: 30405628 PMCID: PMC6207051 DOI: 10.3389/fimmu.2018.02434] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [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: 04/25/2018] [Accepted: 10/02/2018] [Indexed: 02/06/2023] Open
Abstract
Systemic sclerosis (SSc) is a poorly understood heterogeneous condition with progressive multi-organ fibrosis. Recent genetic and genomic evidence suggest a pathogenic role for dysregulated innate immunity and toll-like receptor (TLR) activity in SSc. Levels of both TLR4, as well as certain endogenous TLR ligands, are elevated in skin and lung tissues from patients with SSc and correlate with clinical disease parameters. Conversely, genetic targeting of TLR4 or its endogenous “damage-associated” ligands ameliorates progressive tissue fibrosis. Targeting TLR4 signaling therefore represents a pharmacological strategy to prevent intractable fibrosis. We examined the effect of TAK242, a small molecule TLR4 inhibitor, in preclinical fibrosis models and in SSc fibroblasts. TAK242 treatment prevented, promoted regression of, bleomycin-induced dermal and pulmonary fibrosis, and reduced the expression of several pro-fibrotic mediators. Furthermore, TAK242 ameliorated peritoneal fibrosis and reduced spontaneous hypodermal thickness in TSK/+ mice. Importantly, TAK242 abrogated collagen synthesis and myofibroblasts differentiation in explanted constitutively active SSc fibroblast. Altogether, these findings identify TAK242 as an anti-fibrotic agent in preclinical models of organ fibrosis. TAK242 might potentially represent a novel strategy for the treatment of SSc and other fibrotic diseases.
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Affiliation(s)
- Swati Bhattacharyya
- Northwestern Scleroderma Program, Feinberg School of Medicine, Chicago, IL, United States
| | - Wenxia Wang
- Northwestern Scleroderma Program, Feinberg School of Medicine, Chicago, IL, United States
| | - Zenshiro Tamaki
- Northwestern Scleroderma Program, Feinberg School of Medicine, Chicago, IL, United States
| | - Bo Shi
- Northwestern Scleroderma Program, Feinberg School of Medicine, Chicago, IL, United States
| | - Anjana Yeldandi
- Northwestern Scleroderma Program, Feinberg School of Medicine, Chicago, IL, United States
| | | | | | - John Varga
- Northwestern Scleroderma Program, Feinberg School of Medicine, Chicago, IL, United States
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21
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Kim SJ, Cheresh P, Eren M, Jablonski RP, Yeldandi A, Ridge KM, Budinger GRS, Kim DH, Wolf M, Vaughan DE, Kamp DW. Klotho, an antiaging molecule, attenuates oxidant-induced alveolar epithelial cell mtDNA damage and apoptosis. Am J Physiol Lung Cell Mol Physiol 2017; 313:L16-L26. [PMID: 28428174 DOI: 10.1152/ajplung.00063.2017] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [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: 02/13/2017] [Revised: 04/03/2017] [Accepted: 04/16/2017] [Indexed: 11/22/2022] Open
Abstract
Alveolar epithelial cell (AEC) apoptosis and inadequate repair resulting from "exaggerated" lung aging and mitochondrial dysfunction are critical determinants promoting lung fibrosis. α-Klotho, which is an antiaging molecule that is expressed predominantly in the kidney and secreted in the blood, can protect lung epithelial cells against hyperoxia-induced apoptosis. We reasoned that Klotho protects AEC exposed to oxidative stress in part by maintaining mitochondrial DNA (mtDNA) integrity and mitigating apoptosis. We find that Klotho levels are decreased in both serum and alveolar type II (AT2) cells from asbestos-exposed mice. We show that oxidative stress reduces AEC Klotho mRNA and protein expression, whereas Klotho overexpression is protective while Klotho silencing augments AEC mtDNA damage. Compared with wild-type, Klotho heterozygous hypomorphic allele (kl/+) mice have increased asbestos-induced lung fibrosis due in part to increased AT2 cell mtDNA damage. Notably, we demonstrate that serum Klotho levels are reduced in wild-type but not mitochondrial catalase overexpressing (MCAT) mice 3 wk following exposure to asbestos and that EUK-134, a MnSOD/catalase mimetic, mitigates oxidant-induced reductions in AEC Klotho expression. Using pharmacologic and genetic silencing studies, we show that Klotho attenuates oxidant-induced AEC mtDNA damage and apoptosis via mechanisms dependent on AKT activation arising from upstream fibroblast growth factor receptor 1 activation. Our findings suggest that Klotho preserves AEC mtDNA integrity in the setting of oxidative stress necessary for preventing apoptosis and asbestos-induced lung fibrosis. We reason that strategies aimed at augmenting AEC Klotho levels may be an innovative approach for mitigating age-related lung diseases.
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Affiliation(s)
- Seok-Jo Kim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.,Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Paul Cheresh
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.,Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Mesut Eren
- Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Renea P Jablonski
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.,Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Anjana Yeldandi
- Department of Pathology, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Karen M Ridge
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.,Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - G R Scott Budinger
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.,Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - Dong-Hyun Kim
- Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and
| | - Myles Wolf
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Douglas E Vaughan
- Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
| | - David W Kamp
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois; .,Department of Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois
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22
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Jablonski RP, Kim SJ, Cheresh P, Williams DB, Morales-Nebreda L, Cheng Y, Yeldandi A, Bhorade S, Pardo A, Selman M, Ridge K, Gius D, Budinger GRS, Kamp DW. SIRT3 deficiency promotes lung fibrosis by augmenting alveolar epithelial cell mitochondrial DNA damage and apoptosis. FASEB J 2017; 31:2520-2532. [PMID: 28258190 DOI: 10.1096/fj.201601077r] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [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: 10/18/2016] [Accepted: 02/07/2017] [Indexed: 01/28/2023]
Abstract
Alveolar epithelial cell (AEC) mitochondrial dysfunction and apoptosis are important in idiopathic pulmonary fibrosis and asbestosis. Sirtuin 3 (SIRT3) detoxifies mitochondrial reactive oxygen species, in part, by deacetylating manganese superoxide dismutase (MnSOD) and mitochondrial 8-oxoguanine DNA glycosylase. We reasoned that SIRT3 deficiency occurs in fibrotic lungs and thereby augments AEC mtDNA damage and apoptosis. Human lungs were assessed by using immunohistochemistry for SIRT3 activity via acetylated MnSODK68 Murine AEC SIRT3 and cleaved caspase-9 (CC-9) expression were assayed by immunoblotting with or without SIRT3 enforced expression or silencing. mtDNA damage was measured by using quantitative PCR and apoptosis via ELISA. Pulmonary fibrosis after asbestos or bleomycin exposure was evaluated in 129SJ/wild-type and SIRT3-knockout mice (Sirt3-/- ) by using fibrosis scoring and lung collagen levels. Idiopathic pulmonary fibrosis lung alveolar type II cells have increased MnSODK68 acetylation compared with controls. Asbestos and H2O2 diminished AEC SIRT3 protein expression and increased mitochondrial protein acetylation, including MnSODK68 SIRT3 enforced expression reduced oxidant-induced AEC OGG1K338/341 acetylation, mtDNA damage, and apoptosis, whereas SIRT3 silencing promoted these effects. Asbestos- or bleomycin-induced lung fibrosis, AEC mtDNA damage, and apoptosis in wild-type mice were amplified in Sirt3-/- animals. These data suggest a novel role for SIRT3 deficiency in mediating AEC mtDNA damage, apoptosis, and lung fibrosis.-Jablonski, R. P., Kim, S.-J., Cheresh, P., Williams, D. B., Morales-Nebreda, L., Cheng, Y., Yeldandi, A., Bhorade, S., Pardo, A., Selman, M., Ridge, K., Gius, D., Budinger, G. R. S., Kamp, D. W. SIRT3 deficiency promotes lung fibrosis by augmenting alveolar epithelial cell mitochondrial DNA damage and apoptosis.
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Affiliation(s)
- Renea P Jablonski
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA.,Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Seok-Jo Kim
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA.,Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Paul Cheresh
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA.,Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - David B Williams
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA.,Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Luisa Morales-Nebreda
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA.,Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Yuan Cheng
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA.,Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Anjana Yeldandi
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Sangeeta Bhorade
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Annie Pardo
- Facultad de Ciencias, Universidad Nacional Autónoma de México, México City, Mexico
| | - Moises Selman
- Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, México City, Mexico
| | - Karen Ridge
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA.,Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - David Gius
- Department of Radiation Biology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - G R Scott Budinger
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA.,Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - David W Kamp
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois, USA; .,Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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23
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Kim SJ, Cheresh P, Jablonski RP, Morales-Nebreda L, Cheng Y, Hogan E, Yeldandi A, Chi M, Piseaux R, Ridge K, Michael Hart C, Chandel N, Scott Budinger GR, Kamp DW. Mitochondrial catalase overexpressed transgenic mice are protected against lung fibrosis in part via preventing alveolar epithelial cell mitochondrial DNA damage. Free Radic Biol Med 2016; 101:482-490. [PMID: 27840320 PMCID: PMC5928521 DOI: 10.1016/j.freeradbiomed.2016.11.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/31/2016] [Accepted: 11/01/2016] [Indexed: 12/27/2022]
Abstract
RATIONALE Alveolar epithelial cell (AEC) injury and mitochondrial dysfunction are important in the development of lung fibrosis. Our group has shown that in the asbestos exposed lung, the generation of mitochondrial reactive oxygen species (ROS) in AEC mediate mitochondrial DNA (mtDNA) damage and apoptosis which are necessary for lung fibrosis. These data suggest that mitochondrial-targeted antioxidants should ameliorate asbestos-induced lung. OBJECTIVE To determine whether transgenic mice that express mitochondrial-targeted catalase (MCAT) have reduced lung fibrosis following exposure to asbestos or bleomycin and, if so, whether this occurs in association with reduced AEC mtDNA damage and apoptosis. METHODS Crocidolite asbestos (100µg/50µL), TiO2 (negative control), bleomycin (0.025 units/50µL), or PBS was instilled intratracheally in 8-10 week-old wild-type (WT - C57Bl/6J) or MCAT mice. The lungs were harvested at 21d. Lung fibrosis was quantified by collagen levels (Sircol) and lung fibrosis scores. AEC apoptosis was assessed by cleaved caspase-3 (CC-3)/Surfactant protein C (SFTPC) immunohistochemistry (IHC) and semi-quantitative analysis. AEC (primary AT2 cells from WT and MCAT mice and MLE-12 cells) mtDNA damage was assessed by a quantitative PCR-based assay, apoptosis was assessed by DNA fragmentation, and ROS production was assessed by a Mito-Sox assay. RESULTS Compared to WT, crocidolite-exposed MCAT mice exhibit reduced pulmonary fibrosis as measured by lung collagen levels and lung fibrosis score. The protective effects in MCAT mice were accompanied by reduced AEC mtDNA damage and apoptosis. Similar findings were noted following bleomycin exposure. Euk-134, a mitochondrial SOD/catalase mimetic, attenuated MLE-12 cell DNA damage and apoptosis. Finally, compared to WT, asbestos-induced MCAT AT2 cell ROS production was reduced. CONCLUSIONS Our finding that MCAT mice have reduced pulmonary fibrosis, AEC mtDNA damage and apoptosis following exposure to asbestos or bleomycin suggests an important role for AEC mitochondrial H2O2-induced mtDNA damage in promoting lung fibrosis. We reason that strategies aimed at limiting AEC mtDNA damage arising from excess mitochondrial H2O2 production may be a novel therapeutic target for mitigating pulmonary fibrosis.
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Affiliation(s)
- Seok-Jo Kim
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, IL, United States; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Paul Cheresh
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, IL, United States; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Renea P Jablonski
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, IL, United States; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Luisa Morales-Nebreda
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, IL, United States; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Yuan Cheng
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, IL, United States; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Erin Hogan
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, IL, United States; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Anjana Yeldandi
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Monica Chi
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, IL, United States; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Raul Piseaux
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - Karen Ridge
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, IL, United States; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - C Michael Hart
- Atlanta VA Medical Center, Decatur, GA, United States; Department of Medicine, Emory University, Atlanta, GA, United States
| | - Navdeep Chandel
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - G R Scott Budinger
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, IL, United States; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States
| | - David W Kamp
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, IL, United States; Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, United States.
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24
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Bharat A, Chiu S, Zheng Z, Sun H, Yeldandi A, DeCamp MM, Perlman H, Budinger GRS, Mohanakumar T. Lung-Restricted Antibodies Mediate Primary Graft Dysfunction and Prevent Allotolerance after Murine Lung Transplantation. Am J Respir Cell Mol Biol 2016; 55:532-541. [PMID: 27144500 DOI: 10.1165/rcmb.2016-0077oc] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 12/25/2022] Open
Abstract
Over one-third of lung recipients have preexisting antibodies against lung-restricted antigens: collagen (Col) type V and K-α1 tubulin (KAT). Although clinical studies have shown association of these antibodies with primary graft dysfunction (PGD), their biological significance remains unclear. We tested whether preexisting lung-restricted antibodies can mediate PGD and prevent allotolerance. A murine syngeneic (C57BL/6) or allogeneic (C57BL/6 to BALB/c) left lung transplantation model was used. Rabbit polyclonal antibodies were produced against KAT and Col-V and injected pretransplantation. T cell frequency was analyzed using enzyme-linked immunospot, whereas alloantibodies were determined using flow cytometry. Wet:dry ratio, arterial oxygenation, and histology were used to determine PGD. Preexisting Col-V or KAT, but not isotype control, antibodies lead to dose-dependent development of PGD after syngeneic lung transplantation, as evidenced by poor oxygenation and increased wet:dry ratio. Histology confirmed alveolar and capillary edema. The native right lung remained unaffected. Epitope spreading was observed where KAT antibody treatment led to the development of IL-17-producing CD4+ T cells and humoral response against Col-V, or vice versa. In contrast, isotype control antibody failed to induce Col-V- or KAT-specific cellular or humoral immunity. In addition, none of the mice developed immunity against a non-lung antigen, collagen type II. Preexisting lung-restricted antibodies, but not isotype control, prevented development of allotolerance using the MHC-related 1 and cytotoxic T-lymphocyte-associated protein 4-Ig regimen. Lung-restricted antibodies can induce both early and delayed lung graft dysfunction. These antibodies can also cause spreading of lung-restricted immunity and promote alloimmunity. Antibody-directed therapy to treat preexisting lung-restricted antibodies might reduce PGD after lung transplantation.
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Affiliation(s)
| | | | | | | | | | | | - Harris Perlman
- 3 Internal Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and
| | - G R Scott Budinger
- 3 Internal Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and
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25
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Mehta CK, Stanifer BP, Fore-Kosterski S, Gillespie C, Yeldandi A, Meyerson S, Odell DD, DeCamp MM, Bharat A. Primary Spontaneous Pneumothorax in Menstruating Women Has High Recurrence. Ann Thorac Surg 2016; 102:1125-30. [PMID: 27345097 DOI: 10.1016/j.athoracsur.2016.04.069] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 04/12/2016] [Accepted: 04/18/2016] [Indexed: 11/17/2022]
Abstract
BACKGROUND Primary spontaneous pneumothorax (PSP) is treated on the basis of studies that have predominantly consisted of tall male subjects. Here, we determined recurrence of PSP in average-statured menstruating women and studied prevalence of catamenial pneumothorax (CP) in this population. METHODS Men and menstruating women, aged 18 to 55 years, without underlying lung disease or substance abuse were retrospectively studied between 2009 and 2015. A chest pathologist reviewed all specimens for thoracic endometriosis. Kaplan-Meier curves were constructed to determine recurrence. RESULTS The median age of women (n = 33) and men (n = 183) was 33.4 and 31.6 years, respectively. In women, 9 (27%) had left-sided and 24 (73%) had right-sided PSP, treated with tube thoracostomy. Recurrence occurred in 21 women (64%) with median follow-up of 14 months, and they were treated with thoracoscopic pleurodesis. Right PSP had higher recurrence (70%) than left PSP (56%, p = 0.02). Four women (12%) presented with recurrent tension pneumothorax within 6 months. Eight patients (24%) had PSP within 72 hours of menses, meeting clinical criteria of CP. All these were placed on hormonal suppression after initial episode but went on to experience recurrence that was treated with pleurodesis. Classical endometrial glands were not found in any biopsy specimens obtained during the thoracoscopy. In contrast to female subjects, only 8 average-statured men (4.4%) had recurrence (p < 0.001) with a median follow-up of 16 months. CONCLUSIONS PSP in healthy average-statured menstruating women has high recurrence compared with male counterparts. CP is a clinical diagnosis and often recurs despite hormonal suppression therapy.
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Affiliation(s)
- Christopher K Mehta
- Division of Thoracic Surgery, Department of Surgery, Northwestern Memorial Hospital, Chicago, Illinois
| | - Bryan P Stanifer
- Division of Thoracic Surgery, Department of Surgery, Northwestern Memorial Hospital, Chicago, Illinois
| | - Susan Fore-Kosterski
- Division of Thoracic Surgery, Department of Surgery, Northwestern Memorial Hospital, Chicago, Illinois
| | - Colin Gillespie
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern Memorial Hospital, Chicago, Illinois
| | - Anjana Yeldandi
- Department of Pathology, Northwestern Memorial Hospital, Chicago, Illinois
| | - Shari Meyerson
- Division of Thoracic Surgery, Department of Surgery, Northwestern Memorial Hospital, Chicago, Illinois
| | - David D Odell
- Division of Thoracic Surgery, Department of Surgery, Northwestern Memorial Hospital, Chicago, Illinois
| | - Malcolm M DeCamp
- Division of Thoracic Surgery, Department of Surgery, Northwestern Memorial Hospital, Chicago, Illinois
| | - Ankit Bharat
- Division of Thoracic Surgery, Department of Surgery, Northwestern Memorial Hospital, Chicago, Illinois.
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26
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Mehta CK, Gillespie CT, Lin X, Yeldandi A, DeCamp M, Bharat A. Rare Middle Mediastinal Paraganglioma Mimicking Metastatic Neuroendocrine Tumor. Ann Thorac Surg 2015; 100:702-5. [DOI: 10.1016/j.athoracsur.2014.09.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Revised: 08/27/2014] [Accepted: 09/09/2014] [Indexed: 10/23/2022]
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27
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Cheresh P, Morales-Nebreda L, Kim SJ, Yeldandi A, Williams DB, Cheng Y, Mutlu GM, Budinger GRS, Ridge K, Schumacker PT, Bohr VA, Kamp DW. Asbestos-induced pulmonary fibrosis is augmented in 8-oxoguanine DNA glycosylase knockout mice. Am J Respir Cell Mol Biol 2015; 52:25-36. [PMID: 24918270 DOI: 10.1165/rcmb.2014-0038oc] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [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: 12/13/2022] Open
Abstract
Asbestos causes asbestosis and malignancies by mechanisms that are not fully established. Alveolar epithelial cell (AEC) injury and repair are crucial determinants of the fibrogenic potential of noxious agents such as asbestos. We previously showed that mitochondrial reactive oxygen species mediate asbestos-induced AEC intrinsic apoptosis and that mitochondrial human 8-oxoguanine-DNA glycosylase 1 (OGG1), a DNA repair enzyme, prevents oxidant-induced AEC apoptosis. We reasoned that OGG1 deficiency augments asbestos-induced pulmonary fibrosis. Compared with intratracheal instillation of PBS (50 μl) or titanium dioxide (100 μg/50 μl), crocidolite or Libby amphibole asbestos (100 μg/50 μl) each augmented pulmonary fibrosis in wild-type C57BL/6J (WT) mice after 3 weeks as assessed by histology, fibrosis score, lung collagen via Sircol, and type 1 collagen expression; these effects persisted at 2 months. Compared with WT mice, Ogg1 homozygous knockout (Ogg1(-/-)) mice exhibit increased pulmonary fibrosis after crocidolite exposure and apoptosis in cells at the bronchoalveolar duct junctions as assessed via cleaved caspase-3 immunostaining. AEC involvement was verified by colocalization studies using surfactant protein C. Asbestos increased endoplasmic reticulum stress in the lungs of WT and Ogg1(-/-) mice. Compared with WT, alveolar type 2 cells isolated from Ogg1(-/-) mice have increased mtDNA damage, reduced mitochondrial aconitase expression, and increased P53 and cleaved caspase-9 expression, and these changes were enhanced 3 weeks after crocidolite exposure. These findings suggest an important role for AEC mtDNA integrity maintained by OGG1 in the pathogenesis of pulmonary fibrosis that may represent a novel therapeutic target.
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Affiliation(s)
- Paul Cheresh
- 1 Department of Medicine, Division of Pulmonary and Critical Care Medicine, Jesse Brown VA Medical Center, Chicago, Illinois
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Abstract
CONTEXT Diagnosis and classification of lymphomas are based on the morphologic, immunologic, and genetic features that the lesional cells share with their normal B and T lymphocyte counterparts. Primary pulmonary lymphomas account for 0.3% of primary lung neoplasms and less than 0.5% of all lymphomas. OBJECTIVE To describe and summarize the clinical and histopathologic features of the primary pulmonary lymphoma and secondary involvement of the lung by lymphoma. DATA SOURCES Peer-reviewed published literature and personal experience. CONCLUSIONS Diagnosis of clonal lymphoid proliferations in the lung has evolved owing to the greater utility of molecular and flow cytometric analysis of tissue. Further studies are needed to best define the clinical and prognostic features, as well as search for targeted therapy for these patients with rare neoplasms.
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Affiliation(s)
- Josette William
- Department of Pathology, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
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Cook W, Chu R, Saksela M, Raivio K, Yeldandi A. Differential immunohistochemical localization of xanthine oxidase in normal and neoplastic human breast epithelium. Int J Oncol 2012; 11:1013-7. [PMID: 21528298 DOI: 10.3892/ijo.11.5.1013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Xanthine oxidase (XO) and xanthine dehydrogenase (XDH) are alternate enzymatic forms of the XO/XDH protein that catalyzes the oxidation of hypoxanthine to xanthine, and xanthine to uric acid, and in the process XO/XDH generates reactive oxygen species (ROS) such as superoxide, hydrogen peroxide, and hydroxyl radicals. We hypothesize that XO/XDH, which is expressed in mammary epithelium, contributes to the development of breast cancers by virtue of its ability to generate genotoxic ROS. In this study, we produced human XO/XDH protein at high levels in Spodoptera frugiperda (Sf9) insect cells using the baculovirus vector to confirm the specificity of antibodies used for immunostaining of human breast tissues. Immunoblot analysis demonstrated that the full length 143 kDa polypeptide was partially processed into a 87 kDa and 59 kDa fragments. The overexpressed XO/XDH protein was identified in the cytoplasm of insect cells by immunofluorescence staining. Using these antibodies we analyzed normal and neoplastic breast epithelium for the presence of XO/XDH. Immunohistochemical analysis of normal human breast revealed the presence of XO/XDH in the cytoplasm of epithelium lining terminal ducts. The intensity of XO/XDH staining was markedly enhanced in alveolar epithelium of lactating mammary lobules. In contrast, no immunohistochemically detectable XO/XDH was observed in intraductal in situ carcinomas and in invasive carcinomas of the breast. Further studies are necessary to confirm the utility of the loss of XO/XDH expression as a marker for neoplastic change in the breast and investigate the functional role of this enzyme in the pathogenesis of breast cancer.
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Affiliation(s)
- W Cook
- NORTHWESTERN UNIV,SCH MED,DEPT PATHOL,CHICAGO,IL 60611. UNIV HELSINKI,CHILDRENS HOSP,FIN-00290 HELSINKI,FINLAND
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Huang Q, Yeldandi A, Alvares K, Ide H, Reddy J, Rao M. Localization of peroxisome proliferator-activated receptor in mouse and rat-tissues and demonstration of its nuclear translocation in transfected cv-1 cells. Int J Oncol 2012; 6:307-12. [PMID: 21556538 DOI: 10.3892/ijo.6.2.307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Hepatocarcinogenesis in rodents induced by nongenotoxic peroxisome proliferators is postulated to be a receptor-mediated process. The peroxisome proliferator-activated receptors (PPAR) are members of the steroid hormone receptor superfamily, which participate in ligand-dependent transcriptional activation of peroxisomal fatty acid beta oxidation enzyme system genes in liver parenchymal cells of rats and mice. In order to study the tissue distribution and cellular localization of PPAR, we raised polyclonal antibodies against PPAR using a recombinant rat PPAR (rPPAR) expressed as a glutathione-S-transferase-rPPAR fusion protein. On immunoblot analysis the antibodies specifically recognized a 55 kDa PPAR protein in rat, mouse and human liver homogenates. Immunoblotting also showed that in the mouse and rat, PPAR is expressed in liver, kidney and heart, and only weakly in brain and testis. Immunohistochemical localization in the rat and mouse revealed that PPAR is highly expressed in perivenular (i.e., those surrounding hepatic vein) hepatocytes and very weakly in the cytoplasm of remaining hepatocytes. In the kidney, PPAR was visualized predominantly in the p(3) segments of proximal convoluted tubular epithelium. CV-1 cells transiently transfected with rPPAR cDNA construct showed predominant cytoplasmic fluorescence; treatment of these cells with ciprofibrate, a peroxisome proliferator, resulted in the nuclear translocation of PPAR signal.
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Kola S, Yeldandi A. Overexpression of aquaporin-1 in non-small cell lung cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e21078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Sadasiwan C, Medendorp S, Sreedhar R, Raji A, Blum M, DeHoyas A, Patel J, Yeldandi A. Prognostic role of VEGF, EGFR, COX-2, cERB-b2 and ER-alpha in stage 1 non-small cell lung cancers. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.7696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
7696 Introduction: Five-year survival rates for pathologic stage one NSCLC are between 57–67%. We looked at VEGF, EGFR, COX-2, cERB-b2 and ER-a in relationship to predicting recurrence. Methods: Tumors from 65 consecutive patients with stage I NSCLC were included. After marking representative areas on the slides, tissue microarrays were prepared and stained immunohistochemically using commercially available antibodies. The scoring was done by the pathologist and the principal investigator and is calculated as the product of staining intensity, the percentage of positively stained tumor cells and extent of membrane involvement. Results: 27 (42%) males/38 (58%) females. 75% stage IA/25% stage IB. Median smoking history was 40 pack-years (range 0–160pyr). 77% adenocarcinomas/23% squamous cell carcinomas. 19 (29%) patients had a recurrence of which 14 (74%) recurred locally and 5 (26.%) recurred at distant sites. The most common site of recurrence was the lung. Median time to recurrence was 30 months (range 4–97 mos). Scores for the molecular markers are reported in table 1 . Logistic regression of all the variables on multivariate analysis showed that VEGF scores predicted recurrence (p=0.021, Odds Ratio of 1.021). Scores of >200 for VEGF were even more discriminatory. (p =0.034, Odds Ratio of 7.22). The rate of recurrence in this subgroup of patients was 39.5% as opposed to a rate of 14.8% among those with scores of less than 200. EGFR, COX-2, cERB-B2 and ER alpha were not found to be significant predictors of recurrence. Table 1 . Univariate analysis: Conclusion: VEGF scores predict risk of recurrence in stage I Non Small Cell Lung Cancers. We propose the use of high scores of VEGF, in Stage I Non Small Cell Carcinoma using immunohistochemistry to select those patients who are likely to recur. No significant financial relationships to disclose. [Table: see text]
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Affiliation(s)
- C. Sadasiwan
- Westlake Resurrection Hospital, Melrose Park, IL; Northwestern Memorial Hospital, Chicago, IL
| | - S. Medendorp
- Westlake Resurrection Hospital, Melrose Park, IL; Northwestern Memorial Hospital, Chicago, IL
| | - R. Sreedhar
- Westlake Resurrection Hospital, Melrose Park, IL; Northwestern Memorial Hospital, Chicago, IL
| | - A. Raji
- Westlake Resurrection Hospital, Melrose Park, IL; Northwestern Memorial Hospital, Chicago, IL
| | - M. Blum
- Westlake Resurrection Hospital, Melrose Park, IL; Northwestern Memorial Hospital, Chicago, IL
| | - A. DeHoyas
- Westlake Resurrection Hospital, Melrose Park, IL; Northwestern Memorial Hospital, Chicago, IL
| | - J. Patel
- Westlake Resurrection Hospital, Melrose Park, IL; Northwestern Memorial Hospital, Chicago, IL
| | - A. Yeldandi
- Westlake Resurrection Hospital, Melrose Park, IL; Northwestern Memorial Hospital, Chicago, IL
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Nicolas MM, Nayar R, Yeldandi A, De Frias DVS. Pulmonary metastasis of a postradiation breast epithelioid angiosarcoma mimicking adenocarcinoma. A case report. Acta Cytol 2006; 50:672-6. [PMID: 17152281 DOI: 10.1159/000326039] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Epithelioid angiosarcoma (EAS) is a mesenchymal neoplasm that may appear indistinguishable from carcinoma, melanoma and other tumors with epithelioid/epithelial differentiation. We report a case of metastatic postradiation EAS to the lungs that was mistaken for adenocarcinoma. CASE A 45-year-old woman who received radiotherapy for ductal carcinoma in situ (DCIS) 5 years previously had a local recurrence a year earlier and recent development of bilateral small pulmonary nodules. Fine needle aspiration biopsy of the lung lesions showed round to oval tumor cells with amphophilic cytoplasm. An interpretation of adenocarcinoma was rendered during assessment for specimen adequacy. The original breast tumor was typical of cribriform DCIS. Review of the recurrent breast tumor (initially reported as DCIS) and a prior wedge resection of the lung nodules (reported as EAS) showed an epithelial-appearing tumor exhibiting an endothelial immunophenotype CONCLUSION The cytologic features of EAS may resemble those of other neoplasms. In evaluating tumors with epithelioid morphology, mesenchymal tumors should also be considered so that appropriate antibodies can be included in the panel for immunohistochemistry. The importance of reviewing the patient's previous biopsy materials cannot be overemphasized.
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Affiliation(s)
- Marlo M Nicolas
- Department of Pathology, Feinberg School of Medicine, Northwestern Memorial Hospital, Northwestern University, Chicago, Illinois, USA.
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Argiris A, Hensing T, Yeldandi A, Patel S, Raji A, Sturgis C, Masters G, Gooding W, Pins M, Kolesar J. Combined analysis of molecular and clinical predictors of gefitinib activity in advanced non-small cell lung cancer: epidermal growth factor receptor mutations do not tell the whole story. J Thorac Oncol 2006; 1:52-60. [PMID: 17409827] [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: 05/14/2023]
Abstract
BACKGROUND Epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors have been introduced in the standard therapy of non-small-cell lung cancer (NSCLC), but they benefit a minority of patients. The study of molecular markers may identify the subset of patients who are the most appropriate to treat with these agents. METHODS We analyzed 43 patients with advanced NSCLC who were treated with gefitinib, an oral EGFR tyrosine kinase inhibitor, were included in analysis. We evaluated EGFR in tumor tissue by using immunohistochemistry and fluorescence in situ hybridization. We also studied downstream molecules (AKT, ERK, p38 MAPK) and their activation status and the presence of EGFR mutations in tumor tissue in exons 18-21. RESULTS Three patients had tumors with EGFR mutations, all of which had EGFR gene amplification with a ratio of 2 or greater (p= 0.001). There was no correlation between EGFR protein expression and gene amplification. Six patients (14%) achieved an objective response and nine (21%) had stable disease; the median survival was 162 days. EGFR mutations, high levels of AKT protein expression, rash of any grade, and no history of smoking were predictive of disease control (objective response plus stable disease). Only 3 of 15 patients (20%) with disease control had an EGFR mutation. On multivariate analysis, rash and AKT were independent predictors of disease control. Patients with rash survived longer than patients without rash. CONCLUSIONS EGFR mutation-positive tumors are present in a small fraction of patients who achieve disease control with gefitinib. Other molecular markers, such as AKT, need to be further evaluated. Clinical parameters remain major determinants of gefitinib activity in NSCLC.
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Affiliation(s)
- Athanassios Argiris
- Division of Hematology-Oncology, Department of Medicine, Northwestern University Feinberg School of Medicine and the Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois, USA.
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35
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Argiris A, Hensing T, Yeldandi A, Patel S, Raji A, Sturgis C, Masters G, Gooding W, Pins M, Kolesar J. Combined Analysis of Molecular and Clinical Predictors of Gefitinib Activity in Advanced Non–Small Cell Lung Cancer: Epidermal Growth Factor Receptor Mutations Do Not Tell the Whole Story. J Thorac Oncol 2006. [DOI: 10.1016/s1556-0864(15)31513-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Pan J, Pan X, Wang N, Ghazizadeh M, Yeldandi A. Characterization of the degradation of recombinant rat urate oxidase in tetracycline controlled gene expression cells. Microscopy (Oxf) 2005; 54:385-92. [PMID: 16131500 DOI: 10.1093/jmicro/dfi048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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] [Indexed: 05/04/2023] Open
Abstract
Our previous study has shown that uric acid is metabolized by recombinant rat urate oxidase (UOX) and generates hydrogen peroxide leading to DNA damage and cell transformation. However, in transformed cells protein levels of UOX were reduced compared with the control cell. To investigate the characterization and the mechanisms responsible for the degradation of UOX, a controllable gene expression system has been used to switch on/off controlled expression of rat UOX in vitro. Chinese hamster ovary cells were double transfected with regulatory and responsive plasmids, pCMV-tTA and pTRE-rUOX, respectively. The cells expressing rat UOX were subtly controlled by tetracycline (Tc). High levels of UOX mRNA and protein enzymatic activity were observed when the cells were cultured in the absence of Tc. The functional recombinant rat UOX was present in the form of crystalloid cores structures that localized within the peroxisomes of the cells, which was confirmed by transmission and immunoelectron microscopic studies. The addition of Tc into the medium led to the halting of rat UOX gene transcription. As a result, recombinant rat UOX mRNA was lost rapidly followed by loss of crystalloid cores structures and UOX protein degradation. Lysosomes assembled around the UOX specific structures indicating that they were involved in degradation of the protein. The observations suggest that the entire organelle rather than a single protein within the peroxisomes is degraded once the rat UOX gene expression is turned off, and the phagocytic vacuole/lysosome pathway (microautophagic process) may play an important role in degradation of the protein under the present situation.
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Affiliation(s)
- Jie Pan
- College of Life Sciences, Shandong Normal University, No. 88 East Wenhua Avenue, Jinan 250014, People's Republic of China.
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Huo L, Sugimura J, Tretiakova MS, Patton KT, Gupta R, Popov B, Laskin WB, Yeldandi A, Teh BT, Yang XJ. C-kit expression in renal oncocytomas and chromophobe renal cell carcinomas. Hum Pathol 2005; 36:262-8. [PMID: 15791570 DOI: 10.1016/j.humpath.2005.01.011] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
C- kit encodes the membrane-bound tyrosine kinase KIT, whose expression has been identified in several types of human neoplasms. Recently, KIT has been reported to be a marker for chromophobe renal cell carcinoma (RCC) and renal angiomyolipoma. However, expression of this molecule has not been adequately studied in other renal tumors, particularly oncocytoma, which may morphologically resemble chromophobe RCC. In this study, we analyzed c- kit messenger RNA (mRNA) levels in 17 chromophobe RCCs and 20 renal oncocytomas obtained from complementary DNA (cDNA) microarrays. Furthermore, comprehensive immunohistochemical analysis of KIT protein using a monoclonal antibody was performed in 226 renal tumors including chromophobe RCC (n=40), oncocytoma (n=41), clear-cell RCC (n=40), renal angiomyolipoma (n=29), and papillary RCC (n=21) on tissue microarrays (TMAs) and was compared with immunostaining results from 25 chromophobe RCCs and 30 oncocytomas using standard sections. The staining intensity was semiquantitatively graded on a 3-tier scoring system. All chromophobe RCCs and oncocytomas showed significant overexpression of c- kit mRNA. The average increase of mRNA compared with normal kidney tissue was 7.4-fold for chromophobe RCCs and 7.4-fold for oncocytomas. Immunohistochemical expression of KIT was found in most chromophobe RCCs (95% in TMAs and 96% in conventional sections) and oncocytomas (88% in TMAs and 100% in conventional sections) but was infrequently observed in renal angiomyolipomas (17%), papillary RCCs (5%), and clear-cell RCCs (3%). Furthermore, the average KIT immunoreactivity in TMAs was stronger in chromophobe RCC (1.93) and oncocytoma (2.07) than in other subtypes of renal tumors tested, including angiomyolipomas (0.17), papillary RCCs (0.05), and clear-cell RCCs (0.03). In conclusion, we found a significant elevation of c- kit mRNA by cDNA expression microarrays and overexpression of KIT protein by immunohistochemistry not only in chromophobe RCCs but also in oncocytomas. In contrast, immunohistochemical expression of KIT was not detected in most other types of renal cell tumors evaluated. The differential expression of c- kit in these renal tumors may have diagnostic and therapeutic implications.
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Affiliation(s)
- Lei Huo
- Department of Pathology, Northwestern Memorial Hospital, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
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Deshpande CG, Shah RN, Yeldandi A, Papreddy K, Badve S. Expression of Das-1 in primary lung adenocarcinomas represents reactivation of an oncofetal pulmonary antigen. Pathobiology 2004; 70:343-7. [PMID: 12865630 DOI: 10.1159/000071274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2002] [Accepted: 01/08/2003] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE The monoclonal antibody (mAb) designated as mAb Das-1 was generated against a colonic epithelial protein. It reacts with bronchiolar epithelium and submucosal glands and weakly with alveolar lining cells of fetal lung. Adult alveolar epithelium is, however, nonreactive for mAb Das-1. The present study was designed to evaluate the immunoexpression of Das-1 and to correlate it with the histomorphology of primary lung adenocarcinomas and intestinal metaplasia. METHODS Eighty-four cases of primary lung adenocarcinomas were reviewed and categorized according to histologic grade and subtype. Immunohistochemical staining with mAb Das-1 was performed with normal colon as control. RESULTS Expression of Das-1 in the submucosal bronchial glands also served as internal control. Strong and diffuse staining was seen in 33 of the 84 cases of adenocarcinomas (39%). CONCLUSIONS Expression of Das-1 was seen in primary lung adenocarcinomas even though adult alveolar epithelium is negative. Staining with mAb Das-1 was seen regardless of the grade or histological subtype of the lung adenocarcinomas. As most primary lung adenocarcinomas are not of bronchial gland origin, expression of Das-1 represents activation of oncofetal antigens.
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Affiliation(s)
- C G Deshpande
- Department of Pathology, Northwestern University Medical School, Chicago, IL, USA
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Saldías FJ, Azzam ZS, Ridge KM, Yeldandi A, Rutschman DH, Schraufnagel D, Sznajder JI. Alveolar fluid reabsorption is impaired by increased left atrial pressures in rats. Am J Physiol Lung Cell Mol Physiol 2001; 281:L591-7. [PMID: 11504685 DOI: 10.1152/ajplung.2001.281.3.l591] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [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] [Indexed: 11/22/2022] Open
Abstract
Cardiogenic pulmonary edema results from increased hydrostatic pressures across the pulmonary circulation. We studied active Na(+) transport and alveolar fluid reabsorption in isolated perfused rat lungs exposed to increasing levels of left atrial pressure (LAP; 0--20 cmH(2)O) for 60 min. Active Na(+) transport and fluid reabsorption did not change when LAP was increased to 5 and 10 cmH(2)O compared with that in the control group (0 cmH(2)O; 0.50 +/- 0.02 ml/h). However, alveolar fluid reabsorption decreased by approximately 50% in rat lungs in which the LAP was raised to 15 cmH(2)O (0.25 +/- 0.03 ml/h). The passive movement of small solutes ((22)Na(+) and [(3)H]mannitol) and large solutes (FITC-albumin) increased progressively in rats exposed to higher LAP. There was no significant edema in lungs with a LAP of 15 cmH(2)O when all active Na(+) transport was inhibited by hypothermia or amiloride (10(-4) M) and ouabain (5 x 10(-4) M). However, when LAP was increased to 20 cmH(2)O, there was a significant influx of fluid (-0.69 +/- 0.10 ml/h), precluding the ability to assess the rate of fluid reabsorption. In additional studies, LAP was decreased from 15 to 0 cmH(2)O in the second and third hours of the experimental protocol, which resulted in normalization of lung permeability to solutes and alveolar fluid reabsorption. These data suggest that in an increased LAP model, the changes in clearance and permeability are transient, reversible, and directly related to high pulmonary circulation pressures.
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Affiliation(s)
- F J Saldías
- Departamento de Enfermedades Respiratorias, Universidad Católica de Chile, Santiago, Chile
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Abstract
An example of extranodal follicular dendritic cell sarcoma (FDCS) presenting in the lung, a heretofore unreported site, is described. Macroscopically, a 9.5-cm, tan-white, dominant mass and multiple smaller parenchymal and pleural nodules were identified. Microscopically, the tumor was composed of spindled cells with uniform cytologic features arranged in short, intersecting fascicles and intermixed small lymphocytes and plasma cells. One of 4 peribronchial and hilar lymph nodes evaluated microscopically was focally involved by the process. Immunohistochemically, the neoplastic spindled cells expressed complement receptors CD21 and CD35 and low-affinity nerve growth factor receptor but did not express keratin (AE1/AE3 and CAM5.2), CD45 (leukocyte common antigen), CD20 (L26), S-100 protein, muscle-specific actin, or gp100 protein (HMB45). Ultrastructurally, the tumor cells have complex interdigitating cell surface processes and desmosomes. Epstein-Barr virus (EBV) was not detected in the tumor cells by in situ hybridization for EBV-encoded RNA or by polymerase chain reaction for viral DNA. FDCS should be considered in the differential diagnosis of any spindled-cell tumor with interspersed chronic inflammatory cells occurring in the lung. An immunohistochemical panel, including anti-CD21 and -CD35, can assist in its diagnosis, especially with small bronchial biopsy specimens. 2001 by W.B. Saunders Company.
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Affiliation(s)
- R N Shah
- Department of Pathology, Northwestern University Medical School, Chicago, IL, USA
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Aljandali A, Pollack H, Yeldandi A, Li Y, Weitzman SA, Kamp DW. Asbestos causes apoptosis in alveolar epithelial cells: role of iron-induced free radicals. J Lab Clin Med 2001; 137:330-9. [PMID: 11329530 DOI: 10.1067/mlc.2001.114826] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Asbestos causes asbestosis and malignancies by mechanisms that are not fully understood. Alveolar epithelial cell (AEC) injury by iron-induced reactive oxygen species (ROS) is one important mechanism. To determine whether asbestos causes apoptosis in AECs, we exposed WI-26 (human type I-like cells), A549 (human type II-like cells), and rat alveolar type II cells to amosite asbestos and assessed apoptosis by terminal deoxynucleotidyl transferase-mediated deoxyuridine-5'-triphosphate-biotin nick end labeling (TUNEL) staining, nuclear morphology, annexin V staining, DNA nucleosome formation, and caspase 3 activation. In contrast to control medium and TiO2, amosite asbestos and H2O2 each caused AEC apoptosis. A role for iron-catalyzed ROS was suggested by the finding that asbestos-induced AEC apoptosis and caspase 3 activation were each attenuated by either an iron chelator (phytic acid and deferoxamine) or a.OH scavenger (dimethyl-thiourea, salicylate, and sodium benzoate) but not by iron-loaded phytic acid. To determine whether asbestos causes apoptosis in vivo, rats received a single intratracheal instillation of amosite (5 mg) or normal saline solution, and apoptosis in epithelial cells in the bronchoalveolar duct regions was assessed by TUNEL staining. One week after exposure, amosite asbestos caused a 3-fold increase in the percentage of apoptotic cells in the bronchoalveolar duct regions as compared with control (control, 2.1% +/- 0.35%; asbestos, 7.61% +/- 0.15%; n = 3). However, by 4 weeks the number of apoptotic cells was similar to control. We conclude that asbestos-induced pulmonary toxicity may partly be caused by apoptosis in the lung epithelium that is mediated by iron-catalyzed ROS and caspase 3 activation.
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Affiliation(s)
- A Aljandali
- Department of Medicine, Divisions of Pulmonary and Critical Care Medicine and Hematology-Oncology, Northwestern University Medical School and Veterans Administration Chicago Health Care System, Lakeside Division, IL, USA
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Abstract
Primary lymphoepithelioma-like carcinoma of the lung is rare; only 26 case reports have been identified in the literature. The present report presents a case of a 67-year-old white man with a T1 N1 M0 lymphoepithelioma-like carcinoma of the lung. He presented with severe arthritic complaints that resolved after resection of the tumor. The majority of these tumors have occurred in Asian patients who have shown evidence of previous exposure to the Epstein-Barr virus.
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Affiliation(s)
- M W Frank
- Department of Cardiothoracic Surgery, Northwestern University Medical School, Chicago, Illinois 60611, USA
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Shah V, Waltenbaugh C, Yeldandi A. Peroxisome proliferators increase ethanol catabolism through utilization of the catalase pathway. Int J Oncol 1997; 11:255-9. [DOI: 10.3892/ijo.11.2.255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Affiliation(s)
- J Krasnick
- Division of Allergy-Immunology, Department of Medicine, Northwestern Memorial Hospital, Chicago, IL 60611, USA
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Abstract
A 61-year-old woman with a history of sarcoidosis presented with acute sarcoid myositis affecting the respiratory muscles. The patient responded to prednisone therapy with improved pulmonary function test results and resolution of her symptoms. Acute myositis is a rare manifestation of sarcoidosis and should be treated with steroids.
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Affiliation(s)
- D Ost
- Division of Pulmonary and Critical Care Medicine, Northwestern Memorial Hospital, Chicago, IL 60611
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46
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Abstract
We report a case of a granulosa cell tumor of the testis. The ultrastructural characteristics of this rare tumor were compared to its homologue in the ovary and they were similar.
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Affiliation(s)
- F D Gaylis
- Department of Urology, Northwestern University Medical School, Chicago, Illinois
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47
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Rao MS, Dwivedi RS, Subbarao V, Usman MI, Scarpelli DG, Nemali MR, Yeldandi A, Thangada S, Kumar S, Reddy JK. Almost total conversion of pancreas to liver in the adult rat: a reliable model to study transdifferentiation. Biochem Biophys Res Commun 1988; 156:131-6. [PMID: 3178826 DOI: 10.1016/s0006-291x(88)80814-3] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.4] [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] [Indexed: 01/04/2023]
Abstract
Study of transdifferentiation provides an excellent opportunity to investigate various factors and mechanisms involved in repression of activated genes and derepression of inactivated genes. Here we describe a highly reproducible in vivo model, in which hepatocytes are induced in the pancreas of adult rats that were maintained on copper-deficient diet containing a relatively non-toxic copper-chelating agent, triethylenetetramine tetrahydrochloride (0.6% w/w) for 7-9 weeks and then returned to normal rat chow. This dietary manipulation resulted in almost complete loss of pancreatic acinar cells at the end of copper-depletion regimen, and in the development of multiple foci of hepatocytes during recovery phase. In some animals, liver cells occupied more than 60% of pancreatic volume within 6-8 weeks of recovery. Northern blot analysis of total RNA obtained from the pancreas of these rats revealed the expression of albumin mRNA. Albumin was demonstrated in these pancreatic hepatocytes by immunofluorescence. The advantages of this model over the previously described models are: a) low mortality (10%), b) depletion of acinar cells, and c) development of multiple foci of hepatocytes in 100% of rats.
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Affiliation(s)
- M S Rao
- Department of Pathology, Northwestern University Medical School, Chicago, Illinois 60611
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