细胞因子/趋化因子与经典型霍奇金淋巴瘤微环境

经典型霍奇金淋巴瘤(cHL)占霍奇金淋巴瘤(HL)的95%以上并有着相当独特的病理特征,其恶性成分霍奇金-里斯细胞(H/RS细胞)只占肿瘤组织的极少部分,存在于大量浸润性炎性细胞构成的微环境中。cHL组织学亚型及临床特征与不同的微环境相关,细胞因子/趋化因子与肿瘤细胞的的交互作用维持了肿瘤赖以生存的特殊微环境。通过分析探讨cHL不同亚型的微环境特点、参与微环境的细胞因子/趋化因子种类及在cHL生存、抗凋亡和免疫抑制中的重要作用,指出针对细胞因子/趋化因子为靶点的治疗可能成为今后生物治疗策略之一。     

A feature ensemble technology to identify molecular mechanisms for distinction between multiple subtypes of lymphoma

Due to complexities and genetic heterogeneities of biological phenotypes, robust computational approaches are desirable to achieve high generalization performance with multiple classifiers, perturbations of the data structures, and biological interpretations. The purpose of this study is to extend our developed ensemble decision approach to distinguish multiple heterogeneous phenotypes and to elucidate the underlying molecular bridges that intertwine the subtypes. Our work identifies the significant molecular mechanisms （disease-relevant genes and functions） that underpin the complex molecular mechanisms for distinction between multiple phenotypes. Feature genes and hierarchical gene cores identified by our method have achieved high accuracy in the classification of multiple phenotypes. The results show that the proposed analysis strategy is feasible and powerful in the classification of biological subtypes and in the explanation of the molecular connections between clinical phenotypes. Biological interpretations with Gene Ontology revealed concerted genetic pathways for some lymphoma subtypes.     

裸鼠自发性肿瘤病理学及免疫组织化学研究

研究了１９８１￣１９９５年进行人类肿瘤异位移植的２８５０只ＢＡＬＢ／ｃ裸鼠,发现４例裸鼠自发瘤,发病率为０．１４％。病理学及免疫组化证实其中３例为Ｂ细胞生恶性淋巴瘤,病变主要累及全身淋巴结、脾脏、肝、肾和肺;１例为肛管高分化然状细胞瘤。该４例裸鼠所移植的人类肿瘤均未生长。本文讨论了裸鼠自发瘤的发病率、病理学类型和发生原因。     

慢性炎症是恶性淋巴瘤的导火线

恶性淋巴瘤是承担免疫功能的淋巴细胞癌变生成的。日本科学家研究开发出一种能高效检测碱基排列个体差异的技术，并利用这项技术对约300名恶性淋巴瘤患者进行分析。结果发现，在主要发生在消化道的“黏膜相关淋巴组织淋巴瘤”等恶性淋巴瘤患者中，约20％的人A20基因的碱基序列存在变异，