RPRD1B/CREPT facilitates the progression of diffuse large B-cell lymphoma by inhibiting apoptosis through the NF-κB signaling pathway

Objective:To investigate the role of RPRD1B in the progression of diffuse large B-cell lymphoma(DLBCL)and its potential as a therapeutic target.Methods:This study analyzed RPRD1B expression in DLBCL and normal tissues using public databases and assessed its prognostic impact through survival analysis.In vitro and in vivo experiments were conducted to explore the mechanisms by which RPRD1B influences tumor growth and apoptosis.Results:RPRD1B expression was significantly elevated in DLBCL compared to normal tissues and was associated with poor prognosis.In vitro and in vivo experiments demonstrated that RPRD1B promoted lymphoma cell proliferation and inhibited apoptosis through the NF-κB signaling pathway.Conclusions:RPRD1B plays a critical role in the progression of DLBCL by modulating apoptosis and cellular proliferation.Targeting RPRD1B may offer a novel therapeutic strategy for DLBCL,suggesting its potential as a prognostic marker and therapeutic target in hematological malignancies.

RPRD1B对三阴性乳腺癌细胞生物学功能及上皮间质转化的影响

目的探讨核前mRNA结构域调节因子1B(RPRD1B)对三阴性乳腺癌(TNBC)细胞增殖、凋亡、侵袭、迁移及上皮间质转化(EMT)的影响。方法免疫组化检测RPRD1B在三阴性乳腺癌组织和癌旁组织的表达水平,Western blot检测三阴性乳腺癌细胞系MDA-MB-231和HCC-1937中RPRD1B的表达水平。三阴性乳腺癌细胞系MDA-MB-231和HCC-1937分别用sh-RPRD1B慢病毒(sh-RPRD1B组)和sh-NC慢病毒(sh-NC组)感染,然后检测下调效率;CCK-8法检测细胞增殖能力,流式细胞术检测细胞凋亡水平,Transwell实验检测细胞侵袭能力,划痕实验检测细胞迁移能力,Western blot和qRT-PCR法检测敲低RPRD1B对三阴性乳腺癌细胞中上皮间质转化标志性蛋白E-cadherin和N-cadherin的影响。结果RPRD1B在三阴性乳腺癌组织和三阴性乳腺癌MDA-MB-231细胞系和HCC-1937细胞系中均表达。CCK-8结果显示,与sh-NC组比较,sh-RPRD1B组MDA-MB-231和HCC-1937细胞增殖能力显著降低(P<0.01)。流式细胞术结果显示,与sh-NC组比较,sh-RPRD1B组细胞凋亡率显著上升(P<0.01)。Transwell结果显示,与sh-NC组比较,sh-RPRD1B组细胞侵袭能力显著降低(P<0.01)。划痕实验结果显示,与sh-NC组比较,sh-RPRD1B组细胞迁移能力显著降低(P<0.01)。与sh-NC组比较,sh-RPRD1B组细胞上皮间质转化标志分子E-cadherin表达水平升高,N-cadherin表达水平降低。结论敲除RPRD1B表达使三阴性乳腺癌细胞的凋亡能力增强而增殖能力减弱,其侵袭和迁移能力的减弱可能与上皮间质转化过程相关。