| Autor: |
Ichiro Hanamura, Susumu Suzuki, Akinobu Ota, Satsuki Murakami, Akira Satou, Taishi Takahara, Sivasundaram Karnan, Vu Quang Lam, Ayano Nakamura, Souichi Takasugi, Kazuhiro Yoshikawa, Shogo Banno, Masayuki Ejiri, Toyonori Tsuzuki, Yoshitaka Hosokawa, Ryuzo Ueda, Akiyoshi Takami |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Hemato, Vol 2, Iss 2, Pp 368-382 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2673-6357 |
| DOI: |
10.3390/hemato2020023 |
| Popis: |
The clinical and biological significance of programmed death-1 (PD-1) expression by B-lymphoma cells is largely unknown. Here, using multicolor immunofluorescent staining (MC-IF), we investigated PD-1 and PD-L1 expression in PAX5+ (B-lymphoma), CD68+ (macrophage), or CD3+ (T-cell) cells in formalin-fixed, paraffin-embedded samples of 32 consecutive patients with de novo diffuse large B-cell lymphoma (DLBCL) treated with rituximab plus chemotherapy. PD-1- and PD-L1-expressing PAX5+ cells were observed in 59% and 3% of the patients, respectively. PD-1-expressing CD3+ lymphocytes and PD-L1-expressing CD68+ macrophages were observed in 89% and 86% of the patients, respectively. PD-L1 expression on PAX5+ lymphoma cells or CD68+ macrophages and PD-1 expression on CD3+ lymphocytes were not correlated with prognosis. However, patients with PD-1 expression on lymphoma cells showed shorter progression-free survival than those lacking PD-1-expressing lymphoma cells (p = 0.033). Furthermore, genetically modified PD-1-knockout human B-lymphoma VAL cells showed reduced cell growth and migration, and decreased S6 kinase phosphorylation than VAL/mock cells. Our data suggest that PD-1 expression on DLBCL cells detected by MC-IF was associated with poor prognosis and cell-intrinsic PD-1 signaling was related with cell growth and migration in a subpopulation of B-cell lymphoma. These findings may allow the development of distinct DLBCL subtypes affecting prognosis. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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