背侧前额皮层单核转录组概况:神经元基因表达的机制作用,包括17q21.31位点,在PTSD应激反应中
Chris Chatzinakos1, Cameron D Pernia1, Filomene G Morrison1
1Department of Psychiatry, McLean Hospital, Harvard Medical School, Belmont, Mass. (Chatzinakos, Pernia, Iatrou, McCullough, Schuler, Snijders, DiPietro, Soliva Estruch, Anastasopoulos, Bowlby, Hartmann, N.M. Ressler, Carlezon, K.J. Ressler, Daskalakis); Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, Mass. (Chatzinakos, Pernia, Iatrou, Schuler, Snijders, DiPietro, Soliva Estruch, Anastasopoulos, Bowlby, Daskalakis); National Center for PTSD, VA Boston Healthcare System, Boston (Morrison, Wolf, Logue, Miller); Department of Psychiatry (Morrison, Wolf, Logue, Miller), Department of Neurology (Huber), and Department of Biomedical Genetics (Logue), Boston University School of Medicine, Boston; Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands (Soliva Estruch, Snijders); RG Neurohomeostasis, Department of Psychiatry and Psychotherapy, Medical Faculty, University of Bonn, Bonn, Germany (Bajaj, Gassen); Department of Radiology, University Hospital Basel, University of Basel, Basel, Switzerland (Anastasopoulos); Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore (Bharadwaj, Kleinman); Department of Psychiatry, University of California San Diego, La Jolla (Maihofer, Nievergelt); Center for Excellence in Stress and Mental Health (Maihofer, Nievergelt) and Research Service (Maihofer, Nievergelt), Veterans Affairs San Diego Healthcare System, San Diego; Department of Psychiatry, Yale University School of Medicine, New Haven, Conn. (Krystal, Girgenti); Psychiatry Service, VA Connecticut Healthcare System, West Haven (Krystal, Girgenti); National Center for PTSD, Clinical Neurosciences Division, U.S. Department of Veterans Affairs, West Haven, Conn. (Krystal, Girgenti); Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore (Kleinman); Pathology and Laboratory Medicine, VA Boston Healthcare System, Boston (Huber); Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, and Broad Institute of MIT and Harvard, Cambridge, Mass. (Kellis); Department of Biostatistics, Boston University School of Public Health, Boston (Logue).
这项研究揭示了脑中细胞类型特定的基因表达差异,用于创伤后应激障碍 (PTSD) 和严重抑郁障碍 (MDD). 研究结果突出了这些条件的独特应激反应机制和潜在生物标志物.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 精神病学是一个精神病学.
背景情况:
- 创伤后应激障碍 (PTSD) 和严重抑郁障碍 (MDD) 与背侧前额皮质 (DLPFC) 有关.
- 之前的大量组织RNA测序 (RNA-seq) 研究缺乏细胞类型分辨率以了解疾病机制.
研究的目的:
- 进行第一个单核RNA-seq (snRNA-seq) 研究,对来自PTSD患者的死后脑组织进行研究.
- 阐明PTSD中细胞类型特定的转录组病理,并将其与MDD进行比较.
主要方法:
- 单核RNA测序 (snRNA-seq) 在32个DLPFC样本上进行,这些样本来自患有PTSD,MDD和对照个体.
- 分析了15个DLPFC样本的复制样本.
- 对大约415,000个核进行了差异性基因表达和通路分析.
主要成果:
- 显著差异表达基因 (snDEGs) 在激发性和抑制性神经元和星球细胞中被确定,但不在散装组织中.
- 与MDD相比,PTSD样本显示snDEGs的复制率更高.
- 在PTSD与MDD的神经元中,葡萄糖皮质体信号通路的丰富程度不同,具有不同的调节方向.
结论:
- 这些发现强调了脑部对PTSD和MDD的应激反应中的细胞类型特定机制.
- 这项研究强调了检查细胞类型特定基因表达的必要性,以了解这些疾病.
- 结果表明新的生物标志物和潜在的治疗点为PTSD和MDD.
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