当前位置: X-MOL 学术Cell. Signal. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Induction of interleukin-11 mediated by RhoA GTPase during human cytomegalovirus lytic infection.
Cellular Signalling ( IF 4.8 ) Pub Date : 2020-03-09 , DOI: 10.1016/j.cellsig.2020.109599
Saud Alarifi 1 , Saad Alkahtani 1 , Ahmed A Al-Qahtani 2 , Christos Stournaras 3 , George Sourvinos 4
Affiliation  

Human cytomegalovirus (HCMV) is a ubiquitous pathogen which periodically reactivates, causing severe clinical consequences in immunosuppressed patients, organ and stem cell transplant recipients or newborn babies with congenital infections. HCMV infection stimulates the expression of several proinflammatory cytokines, which may contribute to the pathogenesis of the infection. Rho GTPases mediate cytokine expression while increasing evidence implicates them in important aspects of HCMV life cycle. Here, we studied the role of RhoA on the interleukin 11 (IL-11) release in HCMV-infected fibroblasts. Human fibroblasts, either endogenously expressing or silenced for RhoA, were infected by HCMV or UV-inactivated virus and IL-11 transcription and secretion was evaluated. We found that HCMV lytic infection increased the IL-11 levels, both in terms of transcription and translation. Both infectious and non-infectious HCMV particles were able to induce the IL-11 production. The depletion of RhoA resulted in an even higher release of IL-11, revealing the implication of this specific Rho isoform in this biological event. Finally, infection of cells in the presence of the HCMV DNA replication inhibitor, ganciclovir, significantly reduced the secretion of IL-11, strongly associating its induction with active viral DNA replication. Collectively, these data demonstrate, for the first time, a novel role of RhoA GTPase during HCMV lytic infection, regulating the activation of an immune response through IL-11.

中文翻译:

在人巨细胞病毒裂解感染期间由 RhoA GTPase 介导的白细胞介素 11 的诱导。

人类巨细胞病毒 (HCMV) 是一种普遍存在的病原体,它会定期重新激活,对免疫抑制患者、器官和干细胞移植受者或患有先天性感染的新生儿造成严重的临床后果。HCMV 感染会刺激几种促炎细胞因子的表达,这可能有助于感染的发病机制。Rho GTPases 介导细胞因子表达,同时越来越多的证据表明它们与 HCMV 生命周期的重要方面有关。在这里,我们研究了 RhoA 对 HCMV 感染的成纤维细胞中白细胞介素 11 (IL-11) 释放的作用。RhoA 内源性表达或沉默的人成纤维细胞被 HCMV 或紫外线灭活病毒感染,并评估了 IL-11 的转录和分泌。我们发现 HCMV 裂解感染增加了 IL-11 水平,无论是转录还是翻译。感染性和非感染性 HCMV 颗粒都能够诱导 IL-11 的产生。RhoA 的消耗导致 IL-11 的释放甚至更高,揭示了这种特定 Rho 同种型在这一生物事件中的意义。最后,在存在 HCMV DNA 复制抑制剂更昔洛韦的情况下感染细胞,显着减少了 IL-11 的分泌,将其诱导与活跃的病毒 DNA 复制密切相关。总的来说,这些数据首次证明了 RhoA GTPase 在 HCMV 裂解感染期间的新作用,通过 IL-11 调节免疫反应的激活。RhoA 的消耗导致 IL-11 的释放甚至更高,揭示了这种特定 Rho 同种型在这一生物事件中的意义。最后,在存在 HCMV DNA 复制抑制剂更昔洛韦的情况下感染细胞,显着减少了 IL-11 的分泌,将其诱导与活跃的病毒 DNA 复制密切相关。总的来说,这些数据首次证明了 RhoA GTPase 在 HCMV 裂解感染期间的新作用,通过 IL-11 调节免疫反应的激活。RhoA 的消耗导致 IL-11 的释放甚至更高,揭示了这种特定 Rho 同种型在这一生物事件中的意义。最后,在存在 HCMV DNA 复制抑制剂更昔洛韦的情况下感染细胞,显着减少了 IL-11 的分泌,将其诱导与活跃的病毒 DNA 复制密切相关。总的来说,这些数据首次证明了 RhoA GTPase 在 HCMV 裂解感染期间的新作用,通过 IL-11 调节免疫反应的激活。
更新日期:2020-03-09
down
wechat
bug