Diffuse large B-cell lymphoma (DLBCL) – a cancer of B cells, is the most common type of non-Hodgkin lymphoma. It encompasses a biologically and clinically diverse set of diseases, many of which cannot be separated from one another by well-defined and widely accepted criteria. The causes are not well understood. An underlying immunodeficiency is a significant risk factor. Infection with some virus, such as Epstein-Barr virus (EBV), has been shown to contribute to the development of some subgroups of DLBCL. Moreover, Hepatitis B virus (HBV) infection can impact the therapy of DLBCL. Recent studies and my previous work described that a chronic viral infection could induce the accumulation of an exhausted B cell subset, involved in the dysfunction of immune system. We propose here to compare the phenotype and function of B lymphocytes in the DLBCL patients with EBV infection, with HBV infection or without those viral infections, in order to define an unique B cell subset associated with a subgroup of DLBCL. This detailed characterization should help to precisely diagnose DLBCL, therefore to explore a more sophisticated therapeutic strategy.
弥漫性大B细胞淋巴瘤(DLBCL)是最常见非霍奇金淋巴瘤,作为一组在形态学、生物学行为和临床表现上具有显著异质性的恶性肿瘤,其病因学和发病机制复杂,对其免疫表型的鉴定直接影响治疗方案的选择和预后。病毒感染特别是Epstein-Barr病毒(EBV)与之密切相关,乙肝病毒(HBV)也影响DLBCL的治疗和预后,但是对病毒相关性DLBCL的免疫表型和病理机制尚不够了解。近期研究和申请人前期工作发现慢性病毒感染可诱导一群表型与功能特异的免疫耗竭B细胞亚群,参与机体免疫功能失调。据此,申请人拟比较EBV阳性、 HBV阳性和此两种病毒阴性的DLBCL患者体内的B细胞表型及功能,以期发现与病毒相关性DLBCL相关的特异性免疫细胞。本项目不仅对于阐明病毒相关性DLBCL的免疫状态有着重要意义,而且也有助于更精准的诊断疾病,更为探索具有精确靶向性的治疗方案提供新的线索。
弥漫性大B细胞淋巴瘤(DLBCL),是成人恶性淋巴瘤中最常见的一种类型,在临床表现、组织形态和预后等多方面具有高度异质性。本项目旨在结合感染情况,利用多色流式细胞学技术对外周血免疫细胞组成进行详细研究,以鉴定淋巴瘤患者体内的免疫细胞亚群,比较其生物学异同。我们发现:1)DLBCL患者外周血B细胞的组成发生特征性变化,各期患者的B细胞分群存在明显差异,揭示了B细胞亚群变化与疾病进展有关,在DLBCL的分期和疾病严重程度的评估中可能具有参考价值。2)结合病毒学和流行病学研究,我们发现HCV感染的DLBCL患者外周血中一种特殊的B细胞亚群比例要明显高于未感染患者,提示HCV感染对DLBCL患者免疫表型变化存在一定影响,病毒感染对恶性淋巴瘤的发生发展影响机制有待进一步研究。
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数据更新时间:2023-05-31
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