期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 22, 期 24, 页码 -出版社
MDPI
DOI: 10.3390/ijms222413441
关键词
Sjogren's syndrome; AKT signaling pathway; non-Hodgkin lymphoma; minor salivary glands; salivary gland epithelial cells; infiltrating mononuclear cells
资金
- European Research Council
- H2020-SC1-2016 protocol HARMONIzation and integrative analysis of regional, national and international Cohorts on primary Sjogren's Syndrome towards improved stratification, treatment and health policy making (HARMONICSS) [731944]
The Akt pathway is specifically activated in MSGs of pSS patients, providing support for novel therapeutic targets.
Primary Sjogren's syndrome (pSS) is an autoimmune exocrinopathy of mainly the salivary and lacrimal glands associated with high prevalence of lymphoma. Akt is a phosphoinositide-dependent serine/threonine kinase, controlling numerous pathological processes, including oncogenesis and autoimmunity. Herein, we sought to examine its implication in pSS pathogenesis and related lymphomagenesis. The expression of the entire and activated forms of Akt (partially and fully activated: phosphorylated at threonine-308 (T308) and serine-473 (S473), respectively), and two of its substrates, the proline-rich Akt-substrate of 40 kDa (PRAS40) and FoxO1 transcription factor has been immunohistochemically examined in minor salivary glands (MSG) of pSS patients (n = 29; including 9 with pSS-associated lymphoma) and sicca-complaining controls (sicca-controls; n = 10). The entire and phosphorylated Akt, PRAS40, and FoxO1 molecules were strongly, uniformly expressed in the MSG epithelia and infiltrating mononuclear cells of pSS patients, but not sicca-controls. Morphometric analysis revealed that the staining intensity of the fully activated phospho-Akt-S473 in pSS patients (with or without lymphoma) was significantly higher than sicca-controls. Akt pathway activation was independent from the extent or proximity of infiltrates, as well as other disease features, including lymphoma. Our findings support that the Akt pathway is specifically activated in MSGs of pSS patients, revealing novel therapeutic targets.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据