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Zheng G, Qiu G, Ge M, He J, Huang L, Chen P, Wang W, Xu Q, Hu Y, Shu Q, Xu J. Human adipose-derived mesenchymal stem cells alleviate obliterative bronchiolitis in a murine model via IDO. Respir Res 2017; 18:119. [PMID: 28619045 PMCID: PMC5472885 DOI: 10.1186/s12931-017-0599-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 05/26/2017] [Indexed: 02/08/2023] Open
Abstract
Background Long-term survival of lung transplantation is hindered by the development of obliterative bronchiolitis (OB). Adipose-derived stem cells (ASCs) were documented to have more potent immunosuppressive ability than mesenchymal stem cells (MSCs) from bone marrow and placenta. The goal of our study is to evaluate the effect of repeated administration of ASCs on OB and the involvement of indoleamine 2,3-dioxygenase (IDO) mediating the protective effect of ASCs in a heterotopic tracheal transplantation (HTT) model. Methods For studies in vitro, ASCs were treated with interferon-γ (IFN-γ). For in vivo study, tracheas from BALB/c or C57BL/6 donors were transplanted into C57BL/6 recipients to create a HTT model. On days 0, 1, 3, 5, 8, 12, 15, 20 and 25 post-transplant, the allogeneic recipient mice were administered intravenously with phosphate buffered saline, 1 × 106 human ASCs, or 1 × 106 human ASCs plus 1-methyltryptophan (1-MT), an IDO inhibitor. On days 3, 7, 14 and 28, serum, trachea and spleen samples were harvested for analysis. Results ASCs homed to heterotopic tracheal grafts after infusion. Multiple doses of ASCs significantly increased tracheal IDO levels in allografts. There were significant increases in graft and serum IFN-γ levels in allografts compared with isografts. IFN-γ elevated IDO expression and activity in ASCs in vitro. ASCs alleviated OB in allografts as evidenced by reduced epithelial loss, epithelial apoptosis, and intraluminal obstruction. The effects of ASCs on OB were blocked by 1-MT. 1-MT also blocked the alterations in pro and anti-inflammatory cytokines as well as CD3+ T cell infiltration induced by ASCs. ASCs induced not only splenic levels of CD4+CD25+Foxp3+ regulatory T cells (Treg) but also IL-10 and TGF-β-producing Treg. Furthermore, IDO inhibition abolished the changes of splenic Treg induced by ASCs. In addition, Treg reduction by cyclophosphamide treatment did not alter the effects of ASCs on tracheal IDO expression in allografts confirming Treg induction is downstream of IDO. Conclusions Repeated doses of ASCs are capable of ameliorating OB. ASCs act at least in part via elevating IDO expression. ASCs promote the generation of Treg and suppress T cell infiltration via an IDO-dependent mechanism.
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Affiliation(s)
- Guoping Zheng
- Shaoxing Second Hospital, 123 Yanan Road, Shaoxing, Zhejiang, 312000, China
| | - Guanguan Qiu
- Shaoxing Second Hospital, 123 Yanan Road, Shaoxing, Zhejiang, 312000, China
| | - Menghua Ge
- Shaoxing Second Hospital, 123 Yanan Road, Shaoxing, Zhejiang, 312000, China
| | - Jianping He
- Shaoxing Second Hospital, 123 Yanan Road, Shaoxing, Zhejiang, 312000, China
| | - Lanfang Huang
- Shaoxing Second Hospital, 123 Yanan Road, Shaoxing, Zhejiang, 312000, China
| | - Ping Chen
- Shaoxing Second Hospital, 123 Yanan Road, Shaoxing, Zhejiang, 312000, China
| | - Wei Wang
- Shaoxing Second Hospital, 123 Yanan Road, Shaoxing, Zhejiang, 312000, China
| | - Qi Xu
- The Children's Hospital of Zhejiang University School of Medicine, 3333 Binsheng Road, Hangzhou, Zhejiang, 310051, China
| | - Yaoqin Hu
- The Children's Hospital of Zhejiang University School of Medicine, 3333 Binsheng Road, Hangzhou, Zhejiang, 310051, China
| | - Qiang Shu
- The Children's Hospital of Zhejiang University School of Medicine, 3333 Binsheng Road, Hangzhou, Zhejiang, 310051, China.
| | - Jianguo Xu
- Shaoxing Second Hospital, 123 Yanan Road, Shaoxing, Zhejiang, 312000, China. .,The First Affiliated Hospital of Zhejiang University School of Medicine, 79 Qingchun Road, Hangzhou, Zhejiang, 310003, China.
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Lorenzi W, Gonçalves FDC, Schneider N, Silva ÉF, Visioli F, Paz AH, Saueressig MG. Repeated systemic administration of adipose tissue-derived mesenchymal stem cells prevents tracheal obliteration in a murine model of bronchiolitis obliterans. Biotechnol Lett 2017; 39:1269-1277. [PMID: 28528427 DOI: 10.1007/s10529-017-2355-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/04/2017] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To investigate the effect of adipose tissue-derived mesenchymal stem cell (ASC) administered either systemically or locally in a murine model of bronchiolitis obliterans. RESULTS When compared to controls, systemic treatment with 106 ASCs on D0 and a second dose on D7 significantly prevented tracheal obliteration 28 days after heterotopic tracheal transplantation (median of 94 vs. 16%; P < 0.01). A single dose tended towards less stenosis than controls, but did not reach statistical significance (28 vs. 94%; P = 0.054). On the contrary, repeated local injection was incapable of preventing tracheal obliteration when compared to a single injection or controls (37 vs. 71 vs. 87%). Two intravenous doses also tended to be better than two local injections (16 vs. 37%; P = 0.058), and were better than a single local dose (16 vs. 71%; P < 0.01). CONCLUSION A second dose of ASC, given systemically after 7 days, reduces luminal obliteration in a heterotopic tracheal transplantation model in mice, suggesting that ASC can be used to prevent obliterative bronchiolitis after lung transplantation.
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Affiliation(s)
- William Lorenzi
- Thoracic Surgery Service, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos, 2350, Santa Cecília, Porto Alegre, RS, CEP 90035-903, Brazil.
| | - Fabiany Da Costa Gonçalves
- Experimental Research Center, Hospital de Clínicas de Porto Alegre, Ramiro Barcelos 2350, Porto Alegre, RS, CEP 90035-903, Brazil
| | - Natália Schneider
- Experimental Research Center, Hospital de Clínicas de Porto Alegre, Ramiro Barcelos 2350, Porto Alegre, RS, CEP 90035-903, Brazil
| | - Éverton Franco Silva
- Thoracic Surgery Service, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos, 2350, Santa Cecília, Porto Alegre, RS, CEP 90035-903, Brazil
| | - Fernanda Visioli
- Pathology Department, School of Odontology, Universidade Federal do Rio Grande do Sul, Ramiro Barcelos 2492, Porto Alegre, RS, CEP 90035-007, Brazil
| | - Ana Helena Paz
- Experimental Research Center, Hospital de Clínicas de Porto Alegre, Ramiro Barcelos 2350, Porto Alegre, RS, CEP 90035-903, Brazil
| | - Mauricio Guidi Saueressig
- Thoracic Surgery Service, Hospital de Clínicas de Porto Alegre, Rua Ramiro Barcelos, 2350, Santa Cecília, Porto Alegre, RS, CEP 90035-903, Brazil
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