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在ALK阳性的性大细胞淋巴瘤中,功能性甘油化PSGL-1的表达

Natsumi Yonemoto¹, Mana Fukushima², Hitomi Hoshino²

¹Department of Pathology, Faculty of Medical Sciences, University of Fukui, Eiheiji, Japan; Division of Surgical Pathology, University of Fukui Hospital, Eiheiji, Japan.

Pathology, research and practice

|April 23, 2025

概括

阳性形性大细胞淋巴瘤 (ALCL) 细胞表现出功能性PSGL-1,装饰着sLeX甘氨酸. 这种与内皮细胞上P-选择素的相互作用可能导致ALCL.

科学领域:

血液学血液学血液学
免疫学免疫学免疫学
葡萄糖生物学葡萄糖生物学

背景情况:

形性淋巴瘤激酶 (ALK) 阳性形性大细胞淋巴瘤 (ALCL) 是一种CD30阳性的成熟T细胞淋巴瘤.
ALCL细胞表现出异常的ALK蛋白表达和血液血管周围的特征透.
与血管相关的ALCL组织生成的分子机制尚未完全理解.

研究的目的:

调查P-选择蛋白糖蛋白连接体-1 (PSGL-1) 和sialyl Lewis X (sLeX) 相互作用在ALK+ALCL血管相关基因生成中的作用.
在P-选择素结合的背景下,分析PSGL-1在ALK+ALCL细胞上的功能性糖化.

主要方法:

对12个ALK+ALCL病例进行免疫组合化学分析,以评估PSGL-1和sLeX同位.
对ALK+ALCL细胞的西部斑块和甘氨酸转移酶基因表达分析.
P-selectin•IgM 嵌合体结合试验以评估ALK+ALCL细胞对P-selectin的粘附.

主要成果:

在ALK+ALCL病例中观察到PSGL-1和sLeX的实质性同定位.
在ALK+ALCL细胞上的PSGL-1被sLeX甘氨酸装饰,特别是在核心2O-甘氨酸上.
ALK+ALCL细胞表现出与P-选择素的结合,证实了功能性PSGL-1糖化.

结论:

在ALK+ALCL细胞上表达的PSGL-1糖形式是功能性的,能够结合P-selectin.
功能性糖化PSGL-1和P-selectin之间的相互作用可能在ALK+ALCL的血管相关组织发生中发挥作用.

关键词:

无质性大细胞淋巴瘤 (ALCL) 是一种亚纳普拉斯性淋巴瘤激酶 (ALK)葡萄糖基酶化是指葡萄糖基酶化的过程.在P-selectin中进行选择.皮选择蛋白糖蛋白连接物1 (PSGL-1)锡亚利尔·易斯 x (sLe(x)) 是一个

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