药理上激活 Δ133p53α 降低了前兆病患者衍生细胞中的细胞衰老
Sebastien M Joruiz1, Delphine Lissa1, Natalia Von Muhlinen1
1Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
概括
塞拉斯和AZD1981增加了Δ133p53α水平,减少了哈森-吉尔福德孕症综合征纤维细胞中的细胞衰老和IL-6分泌. 这些化合物为HGPS提供了无素独立的治疗策略.
科学领域:
- 老年学是一门学科.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 哈森-吉尔福德益生菌综合征 (HGPS) 具有加速衰老和缩短寿命的特征,与益生菌积累有关.
- 目前的疗法向益生素,但需要补充策略.
- 以前的研究表明,Δ133p53α异型表达减轻了与HGPS相关的细胞衰老.
研究的目的:
- 调查塞拉斯特罗和AZD1981是否可以在HGPS纤维细胞中调节内源的Δ133p53α.
- 确定这些化合物是否减少HGPS细胞中与衰老相关的表型.
- 为了评估化合物的效果,而不依赖于孕水平.
主要方法:
- 对 Δ133p53α,孕激素和 p21 WAF1 的表达进行了西部斑点分析.
- 与衰老相关的β-galactosidase (SA-β-gal) 的染色.与衰老相关的β-galactosidase (SA-β-gal) 的染色.
- 针对IL-6分泌的ELISA和针对p21和IL-6mRNA水平的qRT-PCR.
主要成果:
- 塞拉斯和AZD1981治疗增加了D133p53α,并降低了HGPS纤维细胞中的p21WAF1表达.
- 这两种化合物都减少了SA-β-阳性细胞和IL-6分泌.
- 治疗没有影响progerin水平.
结论:
- 塞拉斯托尔和AZD1981有效上调Δ133p53α,抑制HGPS纤维细胞中的细胞衰老和IL-6分泌.
- 这种无素独立的机制表明了与现有疗法的潜在协同作用.
- 这些化合物可能对涉及Δ133p53α调节衰老的条件有价值.
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