Eur Urol Focus:单细胞转录组学揭示骨髓细胞和T淋巴细胞在佩罗尼氏病纤维化微环境中的新作用

2021-05-27 AlexYang MedSci原创

佩罗尼氏病(PD)是一种能够影响阴茎白膜的获得性纤维化疾病,可导致阴茎弯曲、畸形、缩短和勃起功能障碍。尽管有人认为PD的病理生理学中有免疫机制,目前为止还没有研究人员用单细胞转录组来调查这些免疫机制。

佩罗尼氏病(PD)是一种能够影响阴茎白膜的获得性纤维化疾病,可导致阴茎弯曲、畸形、缩短和勃起功能障碍。尽管有人认为PD的病理生理学中有免疫机制,目前为止还没有研究人员用单细胞转录组来调查这些免疫机制。

近期,研究人员使用免疫组织化学(IHC)和单细胞RNA测序(scRNA-Seq)调查了PD患者斑块的免疫学特征

他们对因PD、plication或阴茎癌(对照)而进行阴茎手术的患者进行了白膜活检。纳入PD患者的标准是持久的慢性疾病(持续时间≥12个月),其之前没有做过阴茎手术或注射治疗。研究人员对10名PD患者和5名对照的手术样本进行了IHC检测。另外2名PD和1名对照样本用于scRNA-Seq。

结果发现,IHC显示PD斑块中存在骨髓树突状细胞(DCs;CD68+,TLR4+,CD206+)、细胞毒性T淋巴细胞(CTLs;CD3+,CD8+)和B淋巴细胞(CD20+),而对照组中没有这些细胞。scRNA-Seq产生了3312个PD细胞和5658个对照组细胞的结果。细胞簇中包含成纤维细胞(COL1A2+)、肌成纤维细胞(COL1A2+,ACTA2+)、平滑肌细胞(ACTA2+,DES+)、内皮细胞(VWF+)、骨髓细胞(CD14+)、T淋巴细胞(CD3D+)和中性粒细胞(ALPL+)。骨髓细胞亚群显示存在单核细胞浸润;对照组中包含经典的DCs和常驻巨噬细胞。淋巴细胞亚群表明PD中存在粘膜相关的不变T(MAIT)细胞和CTLs。基因差异表达分析表明慢性PD的炎症和免疫反应增强。但他们的研究因IHC的scRNA-seq样本量小(n=3)而受到限制,而之前石蜡包埋样本队列较大(n=15),结果与他们的研究大致相同。由于组织的硬度和细胞外基质的粘附,PD的单细胞产量低于对照样本。

8970个对照和PD单细胞的测序概览

综上所述,即使在慢性PD阶段(无痛和稳定的弯曲)也有持续的炎症反应。虽然血管化和胶原蛋白的产生提高了,但炎症是由专门的单核细胞衍生的CTL和MAIT细胞驱动的。这些发现可能为PD的医学治疗揭示新的途径

佩罗尼氏病是一种能够导致阴茎缩短和弯曲的疾病,他们研究了免疫系统在佩罗尼氏病患者中的作用。即使在疾病的稳定、慢性阶段,也有免疫系统的激活。他们的结果可能为这种疾病提供新的治疗方法。

原始出处:

Uros Milenkovic , Bram Boeckx , Diether Lambrechts et al. Single-cell Transcriptomics Uncover a Novel Role of Myeloid Cells and T-lymphocytes in the Fibrotic Microenvironment in Peyronie's Disease. Eur Urol Focus. May 2021

 

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    2021-06-29 mjldent
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    2021-12-29 zhwj
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    2021-05-29 chengjn
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最近,有研究人员报道了一种新的方法来解决成年人获得性收缩阴茎。研究中有3名患者抱怨阴茎在站立时收缩和/或耻骨前退缩。身体检查确认了阴茎柄被掩埋,只能看到龟头这3名患者在手术前均报道了自信、自尊和性生活自信度的降低。研究人员对该3名患者进行了外科手术治疗,具体是植入皮下软硅胶阴茎植入物,其中有2名患者接受了耻骨弓上的脂肪垫的移除。手术1年后,研究人员发现,阴茎柄和龟头可见并表现出自然的状态。所有患者

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患者男, 23 岁,无明显诱因发现龟头背侧及包 皮内板黑斑2 年,无明显不适症状。患者之前因包 皮包裹未发现皮损,近期因担心皮损恶变故来治疗。 患者平素体健,家族成员未发现相应家族史。体检: 全身浅表淋巴结未触及肿大,其他部位未发现明显 不适。皮肤科情况:阴茎龟头处可见一黑褐色斑片, 大小约1. 5 cm ×1. 0 cm; 包皮内板可见一黑褐色斑 片,大小约 0. 8 cm × 0. 6 cm;