在2型生物标志物低的严重喘和喘控制中的血液转录组签名
Xue Zeng1, Jing Qing1, Chi-Ming Li1
1Amgen Research, Amgen, Inc, South San Francisco, Calif.
The Journal of allergy and clinical immunology
|June 14, 2023
概括
严重的喘患者具有较低的2型 (T2) 炎症,往往会有持续的症状. 转录组分析显示了这些患者的T2生物标记特征,但不是症状特异性的特征,突出显示了皮质类固醇的影响.
科学领域:
- 免疫学 免疫学 免疫学
- 基因组学就是基因组学.
- 呼吸系统医学 呼吸系统医学
背景情况:
- 严重的喘,特别是2型 (T2) 细胞因子较低的喘,尽管接受皮质类固醇治疗,但症状持续.
- 了解T2-低严重喘的分子基础对于开发向疗法至关重要.
研究的目的:
- 分析T2生物标志物高和T2生物标志物低的严重喘患者的全血转录组.
- 为了将转录组签名与T2生物标志物和喘症状严重程度相关联.
- 为了研究口服皮质类固醇 (OCSs) 对基因表达的影响.
主要方法:
- 在一项严重喘临床试验中,从301名参与者的738个全血样本中进行了大量RNA测序.
- 进行了无监督聚类,差异基因表达和途径分析.
- 患者根据T2生物标志物状态和症状水平分层,有或没有OCS调整.
主要成果:
- 无监督集群确定了一个T2生物标志物低/高症状患者集群,通常在OCSs上.
- 不同基因表达在没有OCS调整的情况下显示了2960个DEG,在OCS签名减去后减少到627个.
- 鉴定了一种明显的T2生物标志物转录组签名,但没有稳定的签名与T2生物标志物低患者的症状相关.
结论:
- 口服皮质类固醇在严重喘中显著影响全血转录组.
- 清晰的转录基因特征与T2生物标志物有关,但与T2生物标志物低患者的症状负担无关.
- 需要进一步的研究来确定T2-生物标志物低的严重喘和持续症状的治疗点.
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