Molecular Mechanisms of Senescence Predisposing to Cancer : Exploratory Analysis on Healthy Tissues Collected for Two Age Groups.
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 58
- 试验地点
- 1
- 主要终点
- Expression of senescence markers in healthy skin tissues collected for the two age groups.
研究概览
简要总结
Epidemiological data show that the incidence of carcinoma, the most common cancer, is strongly linked to the age. Non Melanoma Skin Carcinomas (NMSCs) (the most frequent cancers in the elderly population) derive from keratinocytes of the basal layer of the epidermis, from differentiated keratinocytes of the more superficial layers or from stem cells of hair follicles. Unlike NMSCs, soft-tissue sarcomas, including those deriving from dermal fibroblasts, are very rare (less than 1% of all cancers). Our overall purpose is to decipher the molecular pathways activated during the aging of these tissues that may explain why they have a so different propensity to undergo a malignant transformation. Given that senescent cells accumulate in the dermis and epidermis with age, we will constitute two groups : "young skin" that we arbitrarily limit to the range ≥ 18 and ≤ 40 and "aged skin" ≥ 55.
Thus the main objective of our study is to search within 2 age groups (≥ 18 and ≤ 40 years and ≥ 55 years) the expression of senescence markers on healthy skin tissue.
详细描述
- Information and obtaining informed consent.
- Collection of clinical data.
- Collection of two samples of healthy skin tissue, without disfigurement, during an intervention under general anesthesia for the treatment of a sarcoma.
- Freezing samples of healthy skin tissue in liquid nitrogen within 10 minutes after collection.
- Transfer of the samples to the laboratory of anatomopathology.
- Preparation of the healthy skin samples by the laboratory of anatomopathology.
- Transfer of the conditioned samples to the Institut de Biologie de Lille for analysis.
- Control of the aesthetic appearance during the postoperative consultation.
- Destruction of the samples at the end of analysis.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Other
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patient with an operable sarcoma
- •Requiring a surgical operation under general anesthesia at the Oscar Lambret Centre
- •Age ≥ 18 ans, belonging to one of the two following age groups : [ ≥ 18 and ≤ 40 years] and [ ≥ 55 years]
- •Patient having a social security scheme
- •Patient having signed an informed consent form for the study
排除标准
- •Patient aged under 18 or between 41 and 54
- •Location of the tumor on the face, neck or neckline
- •Patient with a skin tumor
- •Tumor-induced cutaneous fistula making suspect a tumor invasion of the skin
- •Patient with a chronic skin disease
- •Collection in an area already treated by surgery, radiotherapy or brachytherapy
- •Pregnant or breastfeeding women
- •Patient under guardianship or tutorship
研究组 & 干预措施
Collection of healthy skin tissue
Collection of healthy skin tissue
干预措施: Collection of healthy skin tissue (Procedure)
结局指标
主要结局
Expression of senescence markers in healthy skin tissues collected for the two age groups.
时间窗: Baseline
次要结局
- Morbidity(Baseline)
- Presence of different types of DNA damage (single and double strand breaks) in the keratinocytes and fibroblasts of the skin tissues of the two age groups.(Baseline)
- Research of emerging cells in the skin tissue of the subjects of the two age groups via the expression of the Protease-Activated Receptor-1 (PAR-1).(Baseline)