Antitransforming growth factor-β antibody 1D11 ameliorates normal tissue damage caused by high-dose radiation

被引:98
作者
Anscher, MS
Thrasher, B
Rabbani, Z
Teicher, B
Vujaskovic, Z
机构
[1] Duke Univ, Med Ctr, Dept Radiat Oncol, Durham, NC USA
[2] Genzyme Corp, Cambridge, MA USA
来源
INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS | 2006年 / 65卷 / 03期
关键词
transforming growth factor-beta; radiation therapy; complications; late effects;
D O I
10.1016/j.ijrobp.2006.02.051
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Purpose: The aim of this study was to determine whether a neutralizing transforming growth factor-beta (TGF beta) antibody can prevent radiation (RT) induced lung injury. Methods and Materials: Fractionated and sham right lung irradiation in Fischer 344 rats was delivered to assess the radioprotective effect of the antibodies. Animals were divided into the following groups: (1) control (sham RT, control antibody 13C4); (2) RT (800cGy x 5)+13C4); (3) RT + 0.1 mg/kg 1D11 anti-TGF beta antibody; and (4) RT + 1 mg/kg 1D11 antibody. Antibodies were intraperitoneally administered immediately after the last fraction of RT. Animals were sacrificed at 6 and 26 weeks after irradiation. Lungs were assessed for histologic changes, activation of macrophages, expression/activation of TGF beta and its signal transduction pathway. Results: At 6 weeks post-RT, there was a significant reduction in macrophage accumulation (p = 0.041), alveolar wall thickness (p = 0.0003), and TGF-beta activation (p = 0.032) in animals receiving 1.0 mg/kg 1D11 vs. in the control group. However, at 6 weeks, the low dose of 1D11 antibody (0.1 mg/kg) failed to produce any significant changes. At 6 months post-RT, radioprotection is apparent for the group receiving 1.0 mg/kg 1D11, with activated macrophages (p = 0.037), alveolar wall thickness (p = 0.0002), TGF beta activation (p = 0.002) and its signal transduction proteins (p < 0.05) compared with the control group. Conclusions: Administration of a single dose of 1.0 mg/kg of the anti-TGF beta antibody 1D11 resulted in decreased morphologic changes, inflammatory response, and reduced expression and activation of TGF beta 6 weeks and 6 months after 40 Gy to the right hemithorax. Targeting the TGF beta pathway may be a useful strategy to prevent radiation-induced lung injury. (c) 2006 Elsevier Inc.
引用
收藏
页码:876 / 881
页数:6
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