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Characterization of tumor microenvironment and cell interaction patterns in testicular and diffuse large B-cell lymphomas.
Haematologica ( IF 8.2 ) Pub Date : 2024-12-12 , DOI: 10.3324/haematol.2024.286267
Matias Autio,Oscar Brück,Marjukka Pollari,Marja-Liisa Karjalainen-Lindsberg,Klaus Beiske,Judit Mészaros Jørgensen,Harald Holte,Teijo Pellinen,Suvi-Katri Leivonen,Sirpa Leppä

The tumor microenvironments (TME) of diffuse large B-cell lymphoma (DLBCL) subgroups have remained poorly characterized. Here, we dissected the composition and spatial organization of the TME in germinal center B-cell (GCB), activated B-cell (ABC), and testicular DLBCLs (T-DLBCL) using gene expression profiling and multiplex immunohistochemistry. We found that high proportions of M2-like tumor-associated macrophages (TAMs) and cytotoxic tumor-infiltrating T cells (TILs) were characteristic of ABC DLBCL TME. Furthermore, high CD8+ TIL content translated to favorable outcomes. In contrast, GCB DLBCL TME was enriched in CD4+ TILs, regulatory TILs, and a higher M1-like/M2-like TAM ratio, and high proportions of TAMs and Granzyme B+ cells associated with worse survival. TILs and TAMs interacted more frequently with M2-like TAMs and cytotoxic TILs in the ABC DLBCLs contrary to GCB subtype, where the interactions were more abundant with other TILs and CD4+ TILs. In T-DLBCL, TME resembled that of ABC DLBCL with a higher proportion of M2-like TAMs and cytotoxic cells, except that checkpoint-positive TILs were less prominent compared to DLBCL NOS. Cytotoxic TILs also interacted more with TILs and TAMs. A high amount of CD163+ TAM interactions with distinct TILs translated to unfavorable survival both in GCB DLBCL and T-DLBCL, whereas a high number of interactions between TILs and TAMs, CD4+ TILs and TAMs, and CD4+ TILs and other TILs associated with favorable outcomes only in T-DLBCL. Together, our data demonstrate biologically and clinically relevant differences in the composition of and cellular interactions in the TME between various DLBCL entities.

中文翻译:


睾丸和弥漫性大 B 细胞淋巴瘤中肿瘤微环境和细胞相互作用模式的表征。



弥漫性大 B 细胞淋巴瘤 (DLBCL) 亚群的肿瘤微环境 (TME) 特征仍然很差。在这里,我们使用基因表达谱和多重免疫组织化学剖析了生发中心 B 细胞 (GCB) 、活化 B 细胞 (ABC) 和睾丸 DLBCL (T-DLBCL) 中 TME 的组成和空间组织。我们发现高比例的 M2 样肿瘤相关巨噬细胞 (TAM) 和细胞毒性肿瘤浸润 T 细胞 (TILs) 是 ABC DLBCL TME 的特征。此外,高 CD8 + TIL 含量转化为良好的结果。相比之下,GCB DLBCL TME 富含 CD4+ TILs 、调节 TILs 和较高的 M1 样/M2 样 TAM 比率,并且高比例的 TAMs 和颗粒酶 B+ 细胞与较差的生存率相关。与 GCB 亚型相反,TILs 和 TAMs 与 ABC DLBCLs 中的 M2 样 TAMs 和细胞毒性 TILs 的相互作用更频繁,GCB 亚型与其他 TILs 和 CD4+ TILs 的相互作用更丰富。在 T-DLBCL 中,TME 类似于 ABC DLBCL,具有更高比例的 M2 样 TAMs 和细胞毒性细胞,只是检查点阳性 TILs 与 DLBCL NOS 相比不那么突出。细胞毒性 TILs 也与 TILs 和 TAMs 相互作用更多。在 GCB DLBCL 和 T-DLBCL 中,大量 CD163 + TAM 与不同 TIL 的相互作用转化为不良生存率,而 TILs 与 TAMs、CD4+ TILs 和 TAMs 以及 CD4+ TILs 和其他 TILs 之间的大量相互作用仅在 T-DLBCL 中与良好结果相关。总之,我们的数据证明了各种 DLBCL 实体之间 TME 的组成和细胞相互作用的生物学和临床相关差异。
更新日期:2024-12-12
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