Biomarker phenotypes of air pollution and cancer risk in India

摘要 污染空气中存在的化学毒物和致癌物质是相关疾病的可能致病因素。 暴露个体的呼吸消化道癌症。理解水平之间的关系 接触这些污染物和患癌症的风险是识别处于危险中的个人或人群的关键 通报预防措施的制定。这项研究的总体目标是推进这种 通过明尼苏达大学共济会癌症中心之间的合作研究了解 和印度孟买癌症流行病学中心 (CCE)。我们将聘用一组既有经验又新颖的专家 与空气污染相关的生物标志物来检验我们的总体假设，即吸收与空气污染相关的化学物质 致癌物与印度非吸烟者患 LC 和 HNC 的风险相关。在目标 1 和 2 中，我们将进行 病例对照研究，评估血浆中空气污染相关生物标志物与 LC 和 HNC 的关联， 分别在印度非吸烟者中。为了实现这些目标，我们将利用现有的生物技术 CCE 进行的相应流行病学队列的样本和问卷数据。我们 将通过转移美国团队在这方面的专业知识来发展 CCE 的生物标志物测量能力 区。在目标 3 中，我们将招募经常接触空气污染程度不同的健康不吸烟者，基于 他们的职业或生活方式。我们将比较一组暴露和影响的生物标志物 组并与通过一部分人佩戴的个人空气采样设备收集的污染物水平相关 参与者。我们将使用专门设计的空气采样器来表征各种空气的化学成分 污染场景。该目标将有助于解释目标 1 和 2 中生成的生物标志物数据，并将 为未来基于生物标记的印度空气污染研究提供信息。这项研究的一个重要成果是 使用 CCE 队列发展印度未来癌症风险生物标志物研究的能力。这样的 研究可以进一步扩展到其他人群（例如吸烟者或职业接触者） 个人）以及印度的其他环境和饮食暴露。

ABSTRACT Chemical toxicants and carcinogens present in the polluted air are the likely causative agents in the associated cancers of aerodigestive tract in exposed individuals. Understanding the relationship between the level of exposure to these pollutants and the risk of cancer is key to identifying individuals or populations at risk and informing the development of preventive measures. The overarching goal of this study is to advance such understanding through a collaborative research between the Masonic Cancer Center, University of Minnesota and Centre for Cancer Epidemiology (CCE) in Mumbai, India. We will employ a panel of established and novel air pollution-related biomarkers to test our overall hypothesis that the uptake of air pollution-related chemical carcinogens is associated with the risk for LC and HNC in Indian nonsmokers. In Aims 1 and 2, we will conduct case-control studies to assess the association of air pollution-related biomarkers in plasma with LC and HNC, respectively, in Indian nonsmokers. To achieve the goals of these Aims, we will use available biological samples and questionnaire data from the corresponding epidemiological cohorts conducted by the CCE. We will develop capacity for biomarker measurements at CCE by transferring the U.S. team's expertise in this area. In Aim 3, we will recruit healthy nonsmokers with various levels of usual exposures to air pollution, based on their occupation or lifestyle. We will compare a panel of biomarkers of exposure and effect across the groups and correlate to pollutant levels collected through personal air sampling devices worn by a subset of participants. We will use specially designed air samplers to characterize the chemical profile of various air pollution scenarios. This aim will aid in the interpretation of biomarker data generated in Aims 1 and 2, and will inform future biomarker-based studies of air pollution in India. An important outcome of this study is the development of capacity for future biomarker research of cancer risk in India using CCE cohorts. Such research can be further expanded to other population subgroups (e.g., smokers or occupationally exposed individuals) and additional environmental and dietary exposures in India.