Identification of Novel Genes Involved in Cancer Cell Extravasation by Transcriptional Profiling of Primary Organ-specific Endothelial Cells and in Vitro 3D Models
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 31
- 试验地点
- 1
- 主要终点
- Genes differentially expressed by bone and muscle ECs
研究概览
简要总结
The project aims at unraveling the role of organ-specific endothelia mediating the preferential metastasisation of breast cancer cells to bone by using a multi-faceted approach, integrating microfluidics and transcriptomic profiling. Based on a recently study published by the investigators [Jeon et al., PNAS 2015], it can be hypothesized that phenotypic differences at the level of organ-specific endothelial cells are able to drive the preferential extravasation of breast cancer cells to specific sites. Hence, the transcriptional profile of primary organ-specific endothelial cells derived from healthy patients (i.e. non-affected by breast cancer) will be analyzed to identify phenotypic differences between organ-specific populations of endothelial cells. These analyses will allow to identify potential target genes involved in the organ-specific extravasation of cancer cells (i.e. genes differentially expressed by endothelia of preferential and non-preferential metastasisation sites). The selected genes will be silenced and the effect of gene silencing will be evaluated through microfluidic in vitro organ-specific 3D models designed to study cancer cell extravasation.
详细描述
In particular, the main aim of the study will be to highlight differences between bone and skeletal muscle microenvironments, which are respectively preferential and non-preferential metastasisation sites for breast cancer cells, in order to identify specific pathways driving breast cancer cells extravasation. To this purpose, differences in the transcriptional profile of ECs derived from bone and muscle endothelium will be investigated. These analyses will be used to select target genes differentially expressed by bone- and muscle-specific ECs. Then, ECs obtained from bone and muscle endothelium will be respectively used to mimic bone and muscle microvessel environments in microfluidic in vitro 3D models allowing for the study of breast cancer cell extravasation. The genes selected according to the results of the transcriptomic analysis (e.g. genes expressed in ECs derived from bone endothelium, but not expressed in ECs derived from muscle endothelium) will be silenced and the effect of gene silencing will be evaluated monitoring breast cancer cell extravasation in order to verify the involvement of the selected genes in this process.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •age between 18-65 years
- •patients undergoing cruciate ligament surgery or hip arthroplasty
- •subscription of informed consent
排除标准
- •HIV, HCV, HBV, TPHA viral
结局指标
主要结局
Genes differentially expressed by bone and muscle ECs
时间窗: 31/05/2018
Differential expression of genes will be determined by transcriptomic analysis of mRNA (with genome-wide mRNA array tools) derived from bone and muscle ECs
次要结局
- Differences in cell adhesion between bone and muscle ECs(31/05/2018)
- Differences in adhesive properties of bone and muscle ECs(31/05/2018)
- Differences in angiogenic potential between bone and muscle ECs(31/05/2018)
- Selection of potential target genes involved in breast cancer metastasis(31/05/2018)