The Impact of Lung Cancer-derived Fibroblasts on Mast Cells Activation
In addition to their role in allergic inflammation, mast cells are often found at the site of tumors. They have been attributed both to pro- and anti-tumorigenic roles depending on the tumor type. Secretion of mast cell mediators such as histamine, tryptase, fibroblast growth factor (b-FGF), vascular endothelial growth factor (VEGF) and interleukin-8 (IL-8) can enhance tumor growth and angiogenesis while TNF-a and heparin act as tumor suppressors.
The non-small cell lung cancer constitutes the majority of cases of lung cancer. In lung cancer, mast cell numbers correlate with tumor angiogenesis and poor prognosis.
In this work, we are interested to determine the factors in lung cancer microenvironment that attribute to mast cell activation. Beside the tumor cells themselves, the cancer microenvironment includes other cells such as fibroblasts. The fibroblasts arising from tumor stroma, called cancer-associated fibroblasts (CAFs), undergo activation, and have different feature compared to normal fibroblasts (NFs). In this work we are interested to determine whether CAF cells derived from lung tumors, together with the lung cancer cells, or microvesicles-derived from these cells, are able to stimulate mast cells to degranulate and/ or to release various cytokines and chemokines.
For this propose, during surgery of patients with lung cancer, we will take unnecessary sample from the cancer and from normal area for purification of CAF or normal fibroblast cells. Those cells will be co-cultured with both lung cancer cell line (A-549) or microvesicles-derived from these cells, and human mast cell line (LAD2). Supernatants will be collected for determine degranulation and cytokine release from these mast cells.
研究概览
地位
条件
研究类型
注册 (实际的)
参与标准
资格标准
适合学习的年龄
- 孩子
- 成人
- 年长者
接受健康志愿者
有资格学习的性别
取样方法
研究人群
描述
Inclusion Criteria:
Patient with non small cell lung carcinoma
Exclusion Criteria:
none
学习计划
研究是如何设计的?
设计细节
研究衡量的是什么?
主要结果指标
结果测量 |
大体时间 |
---|---|
Measuring the levels of b-hexosaminidase (marker for mast cells degranulation ) and the cytokines levels
大体时间:1-2 weeks
|
1-2 weeks
|
合作者和调查者
研究记录日期
研究主要日期
学习开始 (实际的)
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.