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Ask K, Vierhout M, Dvorkin-Gheva A, Shi W. Mononuclear phagocytic system and fibrosis: back to the future? Eur Respir J 2021; 57:57/3/2004466. [PMID: 33707172 DOI: 10.1183/13993003.04466-2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 01/11/2021] [Indexed: 12/16/2022]
Affiliation(s)
- Kjetil Ask
- Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | - Megan Vierhout
- Dept of Medicine, McMaster University, Hamilton, ON, Canada
| | | | - Wei Shi
- Developmental Biology, Children's Hospital of Los Angeles, Los Angeles, CA, USA
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2
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Differential gene analysis during the development of obliterative bronchiolitis in a murine orthotopic lung transplantation model: A comprehensive transcriptome-based analysis. PLoS One 2020; 15:e0232884. [PMID: 32384121 PMCID: PMC7209239 DOI: 10.1371/journal.pone.0232884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 04/23/2020] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Obliterative bronchiolitis (OB) is a known issue during minor histocompatibility antigen (mHA) disparity during lung transplantation. This study evaluated gene expression in a murine orthotropic lung transplantation model using microarray analysis. METHODS Left lungs from C57BL/10(H-2b) donor mice were transplanted into mHA-mismatched C57BL/6(H-2b) recipient mice. Three groups (OB, non-OB, and sham controls) were confirmed pathologically and analyzed. Gene expression changes in the lung grafts were determined by microarray and immunohistochemical staining, and genes were verified by quantitative PCR in the lungs and mediastinal lymph nodes (LNs). RESULTS A total of 1343 genes were upregulated in the OB lungs compared to the sham group. Significant upregulation was observed for genes related to innate, e.g. Tlr2 and CCL3 and adaptive immunity, e.g. H2-ab1 and Il-21. Positive labeling for MHC class II antigen was observed in the bronchial epithelium of OB accompanied with B cells. We found increased Tlr2, Ccl3, H2-ab1, Il-21, Ighg3, Ifng, and Pdcd1 mRNA expression in the OB lung, and increased Il-21, Ighg3, and Pdcd1 expression in the OB LNs. CONCLUSIONS Adaptive and innate immune reactions were involved in OB after lung transplantation, and genetic examination of related genes could be used for detection of OB.
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3
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Terra LF, Wailemann RAM, Dos Santos AF, Gomes VM, Silva RP, Laporte A, Meotti FC, Terra WR, Palmisano G, Lortz S, Labriola L. Heat shock protein B1 is a key mediator of prolactin-induced beta-cell cytoprotection against oxidative stress. Free Radic Biol Med 2019; 134:394-405. [PMID: 30699366 DOI: 10.1016/j.freeradbiomed.2019.01.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 01/15/2019] [Accepted: 01/20/2019] [Indexed: 12/11/2022]
Abstract
Maintaining islet cell viability in vitro, although challenging, appears to be a strategy for improving the outcome of pancreatic islet transplantation. We have shown that prolactin (PRL) leads to beta-cell cytoprotection against apoptosis, an effect mediated by heat shock protein B1 (HSPB1). Since the role of HSPB1 in beta-cells is still unclear and the hormone concentration used is not compatible with clinical applications because of all the side effects displayed by the hormone in other tissues, we explored the molecular mechanisms by which HSPB1 mediates beta-cell cytoprotection. Lysates from PRL- and/or cytokine-treated MIN6 beta-cells were subjected to HSPB1 immunoprecipitation followed by identification through mass spectrometry. PRL-treated cells presented an enrichment of several proteins co-precipitating with HSPB1. Of note were oxidative stress resistance-, protein degradation- and carbohydrate metabolism-related proteins. Wild type, HSPB1 silenced or overexpressing MIN6 cells were exposed to menadione and hydrogen peroxide and analysed for several oxidative stress parameters. HSPB1 knockdown rendered cells more sensitive to oxidative stress and led to a reduced antioxidant capacity, while prolactin induced an HSPB1-mediated cytoprotection against oxidative stress. HSPB1 overexpression, however, led to opposite effects. PRL treatment, HSPB1 silencing or overexpression did not change the expression nor activities of antioxidant enzymes, it also did not lead to a modulation of total glutathione levels nor G6PD expression. However, HSPB1 levels are related to a modulation of GSH/GSSG ratio, G6PD activity and NADPH/NADP + ratio. We have shown that HSPB1 is important for pro-survival effects against oxidative stress-induced beta-cell death. These results are in accordance with PRL-induced enrichment of HSPB1-interacting proteins related to protection against oxidative stress. Finally, our results outline the need of further studies investigating the importance of HSPB1 for beta-cell viability, since this could lead to the mitigation of beta-cell death through the up-regulation of an endogenous protective pathway.
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Affiliation(s)
- Letícia F Terra
- Departamento de Bioquimica, Instituto de Quimica, Universidade de São Paulo (USP), Av. Prof. Lineu Prestes 748, 05508-000 Sao Paulo, Brazil; Institute of Clinical Biochemistry, Hannover Medical School (MHH), Carl-Neuberg-Straße, 1, 30625, Hannover, Germany.
| | - Rosangela A M Wailemann
- Departamento de Bioquimica, Instituto de Quimica, Universidade de São Paulo (USP), Av. Prof. Lineu Prestes 748, 05508-000 Sao Paulo, Brazil.
| | - Ancély F Dos Santos
- Departamento de Bioquimica, Instituto de Quimica, Universidade de São Paulo (USP), Av. Prof. Lineu Prestes 748, 05508-000 Sao Paulo, Brazil.
| | - Vinicius M Gomes
- Departamento de Bioquimica, Instituto de Quimica, Universidade de São Paulo (USP), Av. Prof. Lineu Prestes 748, 05508-000 Sao Paulo, Brazil.
| | - Railmara P Silva
- Departamento de Bioquimica, Instituto de Quimica, Universidade de São Paulo (USP), Av. Prof. Lineu Prestes 748, 05508-000 Sao Paulo, Brazil.
| | - Anna Laporte
- Institute of Clinical Biochemistry, Hannover Medical School (MHH), Carl-Neuberg-Straße, 1, 30625, Hannover, Germany.
| | - Flávia C Meotti
- Departamento de Bioquimica, Instituto de Quimica, Universidade de São Paulo (USP), Av. Prof. Lineu Prestes 748, 05508-000 Sao Paulo, Brazil.
| | - Walter R Terra
- Departamento de Bioquimica, Instituto de Quimica, Universidade de São Paulo (USP), Av. Prof. Lineu Prestes 748, 05508-000 Sao Paulo, Brazil.
| | - Giuseppe Palmisano
- Departamento de Parasitologia, Instituto de Ciencias Biomedicas (Edifício II), Universidade de São Paulo (USP), Av. Prof. Lineu Prestes 1374, 05508-000 Sao Paulo, Brazil.
| | - Stephan Lortz
- Institute of Clinical Biochemistry, Hannover Medical School (MHH), Carl-Neuberg-Straße, 1, 30625, Hannover, Germany.
| | - Leticia Labriola
- Departamento de Bioquimica, Instituto de Quimica, Universidade de São Paulo (USP), Av. Prof. Lineu Prestes 748, 05508-000 Sao Paulo, Brazil.
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4
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Xu H, Abuduwufuer A, Lv W, Zhou Z, Yang Y, Zhang C, Hu J. The role of HIF-1α-VEGF pathway in bronchiolitis obliterans after lung transplantation. J Cardiothorac Surg 2019; 14:27. [PMID: 30696477 PMCID: PMC6352448 DOI: 10.1186/s13019-019-0832-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 01/08/2019] [Indexed: 12/04/2022] Open
Abstract
Background Graft function may be affected if the organ is exposed to hypoxia. We hypothesized that bronchiolitis obliterans (BO) after lung transplantation is associated with hypoxia-inducible factor-1α (HIF-1α). This study compares the expression of HIF-1α and its downstream proteins in allograft and isograft to explore the relationship between this pathway and BO in rats. Material and methods We performed an orthotopic left pulmonary transplant model using the tri-cuff vascular anastomosis method and evaluated the histopathology, including the severity of fibrosis (SF). The expression of HIF-1α, VEGF-A, and VEGFR-2 was accessed by immunohistochemistry. Results The imageology and pathology showed that the allogenic model developed BO 90 days after the operation. The percentages of a high expression of HIF-1α, VEGF-A, and VEGFR-2 in the allogeneic group were 77.27, 63.64, and 68.18% higher than in the isogeneic group, respectively. The SF score was highest in the allograft and was positively correlated with the expression of the proteins. Conclusion This model can simulate human BO after lung transplantation. The expression of HIF-1α and its downstream proteins in post-transplantation was up-regulated, suggesting that activation of the HIF-1α-VEGF pathway might be involved in the occurrence and prognosis of BO.
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Affiliation(s)
- Haichao Xu
- Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, China
| | - Abudumailamu Abuduwufuer
- Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, China
| | - Wang Lv
- Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, China
| | - Zhenyu Zhou
- Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, China
| | - Yunhai Yang
- Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, China
| | - Chong Zhang
- Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, China
| | - Jian Hu
- Thoracic Surgery, The First Affiliated Hospital, Zhejiang University, 79 Qingchun Road, Hangzhou, China.
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5
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Llontop P, Lopez-Fernandez D, Clavo B, Afonso Martín JL, Fiuza-Pérez MD, García Arranz M, Calatayud J, Molins López-Rodó L, Alshehri K, Ayub A, Raad W, Bhora F, Santana-Rodríguez N. Airway transplantation of adipose stem cells protects against bleomycin-induced pulmonary fibrosis. J Investig Med 2017; 66:739-746. [PMID: 29167193 DOI: 10.1136/jim-2017-000494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2017] [Indexed: 12/25/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive interstitial lung disease with poor prognosis. Adipose-derived stem cells (ADSC) have demonstrated regenerative properties in several tissues. The hypothesis of this study was that airway transplantation of ADSC could protect against bleomycin (BLM)-induced pulmonary fibrosis (PF). Fifty-eight lungs from 29 male Sprague-Dawley rats were analyzed. Animals were randomly divided into five groups: a) control (n=3); b) sham (n=6); c) BLM (n=6); d) BLM+ADSC-2d (n=6); and e) BLM+ADSC-14d (n=8). Animals received 500 µL saline (sham), 2.5 UI/kg BLM in 500 µL saline (BLM), and 2×106 ADSC in 100 µL saline intratracheally at 2 (BLM+ADSC-2d) and 14 days (BLM+ADSC-14d) after BLM. Animals were sacrificed at 28 days. Blinded Ashcroft score was used to determine pulmonary fibrosis extent on histology. Hsp27, Vegf, Nfkβ, IL-1, IL-6, Col4, and Tgfβ1 mRNA gene expression were determined using real-time quantitative-PCR. Ashcroft index was: control=0; sham=0.37±0.07; BLM=6.55±0.34 vs sham (P=0.006). BLM vs BLM+ADSC-2d=4.63±0.38 (P=0.005) and BLM+ADSC-14d=3.77±0.46 (P=0.005). BLM vs sham significantly increased Hsp27 (P=0.018), Nfkβ (P=0.009), Col4 (P=0.004), Tgfβ1 (P=0.006) and decreased IL-1 (P=0.006). BLM+ADSC-2d vs BLM significantly decreased Hsp27 (P=0.009) and increased Vegf (P=0.006), Nfkβ (P=0.009). BLM+ADSC-14d vs BLM significantly decreased Hsp27 (P=0.028), IL-6 (P=0.013), Col4 (P=0.002), and increased Nfkβ (P=0.040) and Tgfβ1 (P=0.002). Airway transplantation of ADSC significantly decreased the fibrosis rate in both early and established pulmonary fibrosis, modulating the expression of Hsp27, Vegfa, Nfkβ, IL-6, Col4, and Tgfβ1. From a translational perspective, this technique could become a new adjuvant treatment for patients with IPF.
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Affiliation(s)
- Pedro Llontop
- Facultad de Psicología, Universidad Nacional de Educación a Distancia, Madrid, Spain.,Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS)-BioPharm Group, Universidadde Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain.,Experimental Surgery Group, Research Unit, Hospital Dr Negrín, Las Palmas de Gran Canaria, Spain.,Experimental Surgery and Medicine Unit, Hospital General Gregorio Marañon. Instituto de Investigación Sanitaria Gregorio Marañon, Madrid, Spain
| | - Daniel Lopez-Fernandez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS)-BioPharm Group, Universidadde Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain.,Experimental Surgery Group, Research Unit, Hospital Dr Negrín, Las Palmas de Gran Canaria, Spain
| | - Bernardino Clavo
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS)-BioPharm Group, Universidadde Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain.,Experimental Surgery Group, Research Unit, Hospital Dr Negrín, Las Palmas de Gran Canaria, Spain
| | - Juan Luis Afonso Martín
- Pathology Service, Complejo Hospitalario Materno Infantil, Las Palmas de Gran Canaria, Spain
| | - María D Fiuza-Pérez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS)-BioPharm Group, Universidadde Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain.,Experimental Surgery Group, Research Unit, Hospital Dr Negrín, Las Palmas de Gran Canaria, Spain
| | - Mariano García Arranz
- Department of Surgery, Laboratorio de Nuevas Tecnologías, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Joaquín Calatayud
- Department of Thoracic Surgery, Hospital Clínico San Carlos, Madrid, Spain
| | | | - Khalid Alshehri
- Department of Thoracic Surgery, Mount Sinai Health System, New York, USA
| | - Adil Ayub
- Department of Thoracic Surgery, Mount Sinai Health System, New York, USA
| | - Wissam Raad
- Department of Thoracic Surgery, Mount Sinai Health System, New York, USA
| | - Faiz Bhora
- Department of Thoracic Surgery, Mount Sinai Health System, New York, USA
| | - Norberto Santana-Rodríguez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS)-BioPharm Group, Universidadde Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain.,Department of Thoracic Surgery, Mount Sinai Health System, New York, USA.,Section of Thoracic Surgery, Department of Surgery, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
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6
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Santana-Rodríguez N, Llontop P, Clavo B, Fiuza-Pérez MD, Zerecero K, Ayub A, Alshehri K, Yordi NA, Re L, Raad W, Fernández-Pérez L, García-Herrera R, Huang CYJ, Bhora FY. Ozone Therapy Protects Against Rejection in a Lung Transplantation Model: A New Treatment? Ann Thorac Surg 2017; 104:458-464. [PMID: 28549673 DOI: 10.1016/j.athoracsur.2017.02.054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 01/29/2017] [Accepted: 02/14/2017] [Indexed: 12/25/2022]
Abstract
BACKGROUND No satisfactory treatment exists for chronic rejection (CR) after lung transplantation (LT). Our objective was to assess whether ozone (O3) treatment could ameliorate CR. METHODS Male Sprague-Dawley inbred rats (n = 36) were randomly assigned into four groups: (1) control (n = 6), (2) sham (n = 6), (3) LT (n = 12), and (4) O3-LT (n = 12). Animals underwent left LT. O3 was rectally administered daily for 2 weeks before LT (from 20 to 50 μg) and 3 times/wk (50 μg/dose) up to 3 months. CR; acute rejection; and Hspb27, Prdx, Epas1, Gpx3, Vegfa, Sftpa1, Sftpb, Plvap, Klf2, Cldn5, Thbd, Dsip, Fmo2, and Sepp1 mRNA gene expression were determined. RESULTS Severe CR was observed in all animals of LT group, but none of the O3-LT animals showed signs of CR, just a mild acute rejection was observed in 1 animal. A significant decrease of Hspb27, Prdx, Epas1, Gpx3, Vegfa, Sftpa1, Sftpb, Plvap, Klf2, Cldn5, Thbd, Dsip, and Fmo2 gene expression in the O3-LT group was observed CONCLUSIONS: O3 therapy significantly delayed the onset of CR regulating the expression of genes involved in its pathogenesis. No known immunosuppressive therapy has been capable of achieving similar results. From a translational point of view, O3 therapy could become a new adjuvant treatment for CR in patients undergoing LT.
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Affiliation(s)
- Norberto Santana-Rodríguez
- Department of Thoracic Surgery, Mount Sinai Health System, New York, New York; Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS)-BioPharm Group, ULPGC, Spain.
| | - Pedro Llontop
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS)-BioPharm Group, ULPGC, Spain; Experimental Surgery, Research Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - Bernardino Clavo
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS)-BioPharm Group, ULPGC, Spain; Experimental Surgery, Research Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - María D Fiuza-Pérez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS)-BioPharm Group, ULPGC, Spain; Experimental Surgery, Research Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - Keila Zerecero
- Experimental Surgery, Research Unit, Hospital Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - Adil Ayub
- Department of Thoracic Surgery, Mount Sinai Health System, New York, New York
| | - Khalid Alshehri
- Department of Thoracic Surgery, Mount Sinai Health System, New York, New York
| | - Nagib A Yordi
- Department of Orthopedic Surgery and Upper Extremity Unit, Healthpoint Hospital, Abu Dhabi, United Arab Emirates
| | - Lamberto Re
- Department of Clinical Pharmacology and Toxicology, Medinat SAS, Ancona, Italy
| | - Wissam Raad
- Department of Thoracic Surgery, Mount Sinai Health System, New York, New York
| | - Leandro Fernández-Pérez
- Instituto Universitario de Investigaciones Biomédicas y Sanitarias (IUIBS)-BioPharm Group, ULPGC, Spain
| | - Ricardo García-Herrera
- Academic Division of Agricultural Sciences, Universidad Juárez Autónoma, Tabasco, México
| | - Chyun-Yin J Huang
- Department of Thoracic Surgery, Mount Sinai Health System, New York, New York
| | - Faiz Y Bhora
- Department of Thoracic Surgery, Mount Sinai Health System, New York, New York
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Ruiz-Pérez D, Largo C, García-Río F. Technical Aspects and Benefits of Experimental Mouse Lung Transplantation. Arch Bronconeumol 2016; 52:596-604. [PMID: 27259359 DOI: 10.1016/j.arbres.2016.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 03/29/2016] [Accepted: 04/15/2016] [Indexed: 01/13/2023]
Abstract
In recent years, the number of lung transplantations performed as the last option for many respiratory diseases has grown considerably, both in adults and children. However, the causes for the relatively short survival of lungs compared to other organ transplants still need to be studied. Techniques have improved since the 1950s when experimental lung transplantation began, and the different animal species used now include rodents. The advantage of using these small species is that the surgical model has been expanded and standardized, and different respiratory problems can be studied. In this review we examine the different technical strategies used in experimental transplantation in rats and mice, focusing on surgical techniques and anesthesia and monitoring methods, and highlighting the major contributions of mouse lung transplantation to the field.
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Affiliation(s)
- Daniel Ruiz-Pérez
- Instituto de Investigación Sanitaria del Hospital Universitario La Paz (IdiPAZ), Madrid, España
| | - Carlota Largo
- Instituto de Investigación Sanitaria del Hospital Universitario La Paz (IdiPAZ), Madrid, España
| | - Francisco García-Río
- Servicio de Neumología, Hospital Universitario La Paz, IdiPAZ, Madrid, España; Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, España; CIBER de Enfermedades Respiratorias (CIBERES), España.
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Wedel J, Bruneau S, Kochupurakkal N, Boneschansker L, Briscoe DM. Chronic allograft rejection: a fresh look. Curr Opin Organ Transplant 2015; 20:13-20. [PMID: 25563987 PMCID: PMC4461362 DOI: 10.1097/mot.0000000000000155] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PURPOSE OF REVIEW New developments suggest that the graft itself and molecules expressed within the graft microenvironment dictate the phenotype and evolution of chronic rejection. RECENT FINDINGS Once ischemia-reperfusion injury, cellular and humoral immune responses target the microvasculature, the associated local tissue hypoxia results in hypoxia-inducible factor 1α-dependent expression of pro-inflammatory and proangiogenic growth factors including vascular endothelial growth factor (VEGF) as a physiological response to injury. Local expression of VEGF can promote the recruitment of alloimune T cells into the graft. mTOR/Akt signaling within endothelial cells regulates cytokine- and alloantibody-induced activation and proliferation and their proinflammatory phenotype. Inhibition of mTOR and/or Akt results in an anti-inflammatory phenotype and enables the expression of coinhibitory molecules that limit local T cell reactivation and promotes immunoregulation. Semaphorin family molecules may bind to neuropilin-1 on regulatory T cell subsets to stabilize functional responses. Ligation of neuropilin-1 on Tregs also inhibits Akt-induced responses suggesting common theme for enhancing local immunoregulation and long-term graft survival. SUMMARY Events within the graft initiated by mTOR/Akt-induced signaling promote the development of chronic rejection. Semaphorin-neuropilin biology represents a novel avenue for targeting this biology and warrants further investigation.
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Affiliation(s)
- Johannes Wedel
- Transplant Research Program, Pediatric Transplant Center, Boston Children's Hospital, Boston MA
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Sarah Bruneau
- Transplant Research Program, Pediatric Transplant Center, Boston Children's Hospital, Boston MA
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Nora Kochupurakkal
- Transplant Research Program, Pediatric Transplant Center, Boston Children's Hospital, Boston MA
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - Leo Boneschansker
- Transplant Research Program, Pediatric Transplant Center, Boston Children's Hospital, Boston MA
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
| | - David M. Briscoe
- Transplant Research Program, Pediatric Transplant Center, Boston Children's Hospital, Boston MA
- Division of Nephrology, Department of Medicine, Boston Children's Hospital, Boston, MA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
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9
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Current world literature. Curr Opin Organ Transplant 2013; 18:111-30. [PMID: 23299306 DOI: 10.1097/mot.0b013e32835daf68] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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