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Inhibition of the CXCL12/CXCR4-axis as preventive therapy for radiation-induced pulmonary fibrosis

Shu, Hui-Kuo G ; Yoon, Younghyoun ; Hong, Samuel ; Xu, Kaiming ; Gao, Huiying ; Hao, Chunhai ; Torres-Gonzalez, Edilson ; Nayra, Cardenes ; Rojas, Mauricio ; Shim, Hyunsuk Shi, Wei

PloS one, 2013-11, Vol.8 (11), p.e79768 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Inhibition of the CXCL12/CXCR4-axis as preventive therapy for radiation-induced pulmonary fibrosis
Autor: Shu, Hui-Kuo G ; Yoon, Younghyoun ; Hong, Samuel ; Xu, Kaiming ; Gao, Huiying ; Hao, Chunhai ; Torres-Gonzalez, Edilson ; Nayra, Cardenes ; Rojas, Mauricio ; Shim, Hyunsuk
Shi, Wei
Assuntos: Alveoli ; Analysis ; Animals ; Background radiation ; Bone marrow ; Bronchoalveolar lavage ; Bronchus ; Cancer therapies ; Cell migration ; Cells (biology) ; Chemokine CXCL12 - antagonists & inhibitors ; Chemokine CXCL12 - genetics ; Chemokine CXCL12 - metabolism ; Chemokines ; CXCL12 protein ; CXCR4 protein ; Disease Models, Animal ; Drug dosages ; Enzyme-linked immunosorbent assay ; Female ; Fibroblasts ; Fibrosis ; Genetic engineering ; Health aspects ; Heterocyclic Compounds - administration & dosage ; Heterocyclic Compounds - pharmacology ; Histology ; House mouse ; Impact strength ; Inhibition ; Injury prevention ; Irradiated ; Irradiation ; Kinases ; Lung - diagnostic imaging ; Lung - metabolism ; Lung - pathology ; Lung - radiation effects ; Lung diseases ; Lungs ; Medical imaging ; Medicine ; Mesenchymal stem cells ; Mesenchymal Stem Cells - metabolism ; Mesenchyme ; Mice ; mRNA ; Oncology ; Osteoprogenitor cells ; Pathogenesis ; Pulmonary fibrosis ; Pulmonary Fibrosis - diagnosis ; Pulmonary Fibrosis - drug therapy ; Pulmonary Fibrosis - etiology ; Pulmonary Fibrosis - prevention & control ; Pyrimidines - administration & dosage ; Pyrimidines - pharmacology ; Radiation ; Radiation (Physics) ; Radiation effects ; Radiation injuries ; Radiation Injuries - complications ; Radiation Injuries, Experimental ; Radiology ; Radiotherapy ; Receptors, CXCR4 - antagonists & inhibitors ; Receptors, CXCR4 - genetics ; Receptors, CXCR4 - metabolism ; Recruitment ; Respiratory tract diseases ; Ribonuclease ; RNA ; Rodents ; SDF-1 protein ; Stem cell transplantation ; Stem cells ; Therapy ; Thorax ; Tomography, X-Ray Computed ; Toxicity ; Transgenic
É parte de: PloS one, 2013-11, Vol.8 (11), p.e79768
Notas: Conceived and designed the experiments: HGS MR HS. Performed the experiments: HGS YY SH KX HG ETG CN MR. Analyzed the data: HGS YY SH MR HS CH. Contributed reagents/materials/analysis tools: HGS MR HS. Wrote the manuscript: HGS HS.
Competing Interests: The authors have declared that no competing interests exist.
Descrição: A devastating late injury caused by radiation is pulmonary fibrosis. This risk may limit the volume of irradiation and compromise potentially curative therapy. Therefore, development of a therapy to prevent this toxicity can be of great benefit for this patient population. Activation of the chemokine receptor CXCR4 by its ligand stromal cell-derived factor 1 (SDF-1/CXCL12) may be important in the development of radiation-induced pulmonary fibrosis. Here, we tested whether MSX-122, a novel small molecule and partial CXCR4 antagonist, can block development of this fibrotic process. The radiation-induced lung fibrosis model used was C57BL/6 mice irradiated to the entire thorax or right hemithorax to 20 Gy. Our parabiotic model involved joining a transgenic C57BL/6 mouse expressing GFP with a wild-type mouse that was subsequently irradiated to assess for migration of GFP+ bone marrow-derived progenitor cells to the irradiated lung. CXCL12 levels in the bronchoalveolar lavage fluid (BALF) and serum after irradiation were determined by ELISA. CXCR4 and CXCL12 mRNA in the irradiated lung was determined by RNase protection assay. Irradiated mice were treated daily with AMD3100, an established CXCR4 antagonist; MSX-122; and their corresponding vehicles to determine impact of drug treatment on fibrosis development. Fibrosis was assessed by serial CTs and histology. After irradiation, CXCL12 levels increased in BALF and serum with a corresponding rise in CXCR4 mRNA within irradiated lungs consistent with recruitment of a CXCR4+ cell population. Using our parabiotic model, we demonstrated recruitment of CXCR4+ bone marrow-derived mesenchymal stem cells, identified based on marker expression, to irradiated lungs. Finally, irradiated mice that received MSX-122 had significant reductions in development of pulmonary fibrosis while AMD3100 did not significantly suppress this fibrotic process. CXCR4 inhibition by drugs such as MSX-122 may alleviate potential radiation-induced lung injury, presenting future therapeutic opportunities for patients requiring chest irradiation.
Editor: United States: Public Library of Science
Idioma: Inglês

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Inhibition of the CXCL12/CXCR4-axis as preventive therapy for radiation-induced pulmonary fibrosis

Shu, Hui-Kuo G ; Yoon, Younghyoun ; Hong, Samuel ; Xu, Kaiming ; Gao, Huiying ; Hao, Chunhai ; Torres-Gonzalez, Edilson ; Nayra, Cardenes ; Rojas, Mauricio ; Shim, Hyunsuk Shi, Wei

United States: Public Library of Science

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