Expressions of SH3BP5, LMO3, and SNAP25 in diffuse large B‐cell lymphoma cells and their association with clinical features

Abstract

Diffuse large B‐cell lymphoma (DLBCL) is clinicopathologically and genetically heterogeneous with variable clinical outcomes. We previously identified signature genes overexpressed in CD5‐positive (CD5+) DLBCL, which is a poor prognostic subgroup of DLBCL. To elucidate the clinical significance of the protein expression of the signature genes overexpressed in CD5+ DLBCL with regard to all DLBCL, not otherwise specified (NOS), 10 genes (SH3BP5,LMO3,SNAP25,SYT5,SV2C,CABP1,FGF1,FGFR2,NEUROD1, and SYN2) were selected and examined immunohistochemically with samples from 28 patients with DLBCL, NOS. Only three protein expressions, SH3BP5, LMO3, and SNAP25, were detected in DLBCL cells and then analyzed further with samples from 187 patients with DLBCL, NOS. The SH3BP5, LMO3, and SNAP25 proteins were expressed in 60% (103/173), 34% (59/175), and 46% (77/168) of DLBCL patients, respectively. These protein expressions were associated with CD5 expression, and only SH3BP5 was frequently expressed in activated B‐cell‐like DLBCL (P = 0.046). Compared to the SH3BP5‐negative group, the SH3BP5+ group was correlated with elderly onset (>60 years, P = 0.0096) and advanced‐stage disease (stage III/IV, P = 0.037). The LMO3+ group showed a worse performance status (>1, P = 0.0004). The SH3BP5+ group and the LMO3+ group had significantly worse overall survival than the negative groups (P = 0.030, 0.034; respectively) for the entire group. In a subgroup analysis of patients treated with rituximab‐containing chemotherapy, there was no significant difference between groups. To the best of our knowledge, this is the first report showing the protein expressions of SH3BP5, LMO3, and SNAP25 in DLBCL cells and their clinical significance in patients with DLBCL. The SH3BP5 and LMO3 protein expressions are associated with the baseline clinical characteristics of DLBCL.

Computational Approaches for Cancer-Fighting: From Gene Expression to Functional Foods

“…Interestingly, in 2015, Panett et al [134] already reported on the role of SLC44A1 in pancreatic ductal adenocarcinoma, proposing its role as a suitable molecular marker [134]. Our analysis confirmed this role, and the STRING analysis also reveals that SLC44A1 may interact with SH3BP5 (Figure 2), an essential kinase for B-cell differentiation and proliferation [135]. In 2019, Li et al [90] reported that the elevated expression of SH3BP5 significantly also correlated with poor outcomes of acute myeloid leukemia patients [90].…”

Mining the potential prognostic value of synaptosomal-associated protein 25 (SNAP25) in colon cancer based on stromal-immune score

“…As reported, SNAP25 is potentially important for normal vesicle fusion and lysosomal trafficking ( Manca et al, 2014 ; Mu et al, 2018 ). Kobayashi et al (2016) found that SNAP25 protein was expressed in 46% (77/168) of diffuse large B-cell lymphoma (DLBCL) patients and associated with CD5 expression ( P = 0.018). Huang et al (2017) displayed the expression and functional significance of SNAP25 in medulloblastoma.…”