新研究在單細胞水平上揭示系統性紅斑狼瘡異質性
作者:
小柯機器人發布時間:2020/8/5 23:13:22
美國傑克遜實驗室Jacques F. Banchereau、Virginia Pascual等研究人員合作在單細胞水平上揭示系統性紅斑狼瘡異質性。這一研究成果於2020年8月3日在線發表在國際學術期刊《自然—免疫學》上。
使用單細胞RNA測序,研究人員對33名患有不同程度疾病的系統性紅斑狼瘡(SLE)兒童和11位相匹配對照組的約276,000個外周血單核細胞進行了分析。幹擾素刺激基因(ISG)的表達增加將SLE兒童的細胞與健康對照細胞區分開。高ISG表達特徵(ISGhi)來自主要細胞類型中的少量轉錄定義亞群,包括單核細胞、CD4+和CD8+T細胞、天然殺傷細胞、常規和漿細胞樣樹突狀細胞、B細胞,尤其是漿細胞。富含ISG和/或單基因狼瘡相關基因獨特亞群的擴增將疾病活性最高的患者分類。
對SLE成人患者的約82,000個單個外周血單核細胞進行分析,證實了具有最高疾病活性患者中類似亞群的擴增。這項研究為解決SLE轉錄特徵的起源並為疾病異質性的精準醫療奠定了基礎。
據悉,系統性紅斑狼瘡(SLE)患者顯示出複雜的血液轉錄組,其細胞起源難以分辨。
附:英文原文
Title: Mapping systemic lupus erythematosus heterogeneity at the single-cell level
Author: Djamel Nehar-Belaid, Seunghee Hong, Radu Marches, Guo Chen, Mohan Bolisetty, Jeanine Baisch, Lynnette Walters, Marilynn Punaro, Robert J. Rossi, Cheng-Han Chung, Richie P. Huynh, Prashant Singh, William F. Flynn, Joy-Ann Tabanor-Gayle, Navya Kuchipudi, Asuncion Mejias, Magalie A. Collet, Anna Lisa Lucido, Karolina Palucka, Paul Robson, Santhanam Lakshminarayanan, Octavio Ramilo, Tracey Wright, Virginia Pascual, Jacques F. Banchereau
Issue&Volume: 2020-08-03
Abstract: Patients with systemic lupus erythematosus (SLE) display a complex blood transcriptome whose cellular origin is poorly resolved. Using single-cell RNA sequencing, we profiled ~276,000 peripheral blood mononuclear cells from 33 children with SLE with different degrees of disease activity and 11 matched controls. Increased expression of interferon-stimulated genes (ISGs) distinguished cells from children with SLE from healthy control cells. The high ISG expression signature (ISGhi) derived from a small number of transcriptionally defined subpopulations within major cell types, including monocytes, CD4+ and CD8+ T cells, natural killer cells, conventional and plasmacytoid dendritic cells, B cells and especially plasma cells. Expansion of unique subpopulations enriched in ISGs and/or in monogenic lupus-associated genes classified patients with the highest disease activity. Profiling of ~82,000 single peripheral blood mononuclear cells from adults with SLE confirmed the expansion of similar subpopulations in patients with the highest disease activity. This study lays the groundwork for resolving the origin of the SLE transcriptional signatures and the disease heterogeneity towards precision medicine applications. Banchereau and colleagues provide a resource dataset that examines disease-related transcriptional profiles of peripheral whole-blood cells from adolescent patients with SLE by single-cell RNA-seq analysis.
DOI: 10.1038/s41590-020-0743-0
Source: https://www.nature.com/articles/s41590-020-0743-0