Oncotarget

Research Papers:

MMP-1 promoter polymorphism is associated with risk of radiation-induced lung injury in lung cancer patients treated with radiotherapy

Bo Liu, Minxiao Yi, Yang Tang, Qingxu Liu, Hong Qiu, Yanmei Zou, Ping Peng, Lu Zhang, Chunping Hu and Xianglin Yuan _

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Oncotarget. 2016; 7:70175-70184. https://doi.org/10.18632/oncotarget.12164

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Abstract

Bo Liu1, Minxiao Yi1, Yang Tang1, Qingxu Liu1, Hong Qiu1, Yanmei Zou1, Ping Peng1, Lu Zhang1, Chunping Hu2, Xianglin Yuan1

1Department of Oncology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei Province, China

2Department of Statistics, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei Province, China

Correspondence to:

Xianglin Yuan, email: yxl@medmail.com.cn

Keywords: single nucleotide polymorphism, radiation-induced lung injury, lung cancer, MMP-1, radiotherapy

Received: April 25, 2016     Accepted: September 14, 2016     Published: September 21, 2016

ABSTRACT

Matrix metalloproteinase-1 (MMP-1) has been implicated in several inflammatory and fibrotic diseases. We hypothesized that genetic variations in the MMP1 promoter region are associated with risk of radiation-induced lung injury (RILI). A cohort of 251 lung cancer patients was genotyped for five single nucleotide polymorphisms in the MMP1 promoter region. We found that rs1144393 AG/GG was strongly correlated with an increased occurrence of grade ≥ 2 RILI (p = 0.002). Additionally, patients with the rs1144393 AG/GG genotypes exhibited higher MMP-1 expression than patients with the AA genotype in lung tissues (n = 28, p = 0.022) and plasma samples (n = 40, p = 0.018). Our results indicated that rs1144393 in the MMP1 promoter region can be a predictor of grade ≥ 2 RILI in lung cancer patients treated with thoracic radiation.


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