Retinal Pigment Epithelial Cells Express a Functional Receptor for Glucagon-Like Peptide-1 (GLP-1)
المؤلفون المشاركون
Montecucco, Fabrizio
Puddu, Alessandra
Sanguineti, Roberta
Viviani, Giorgio Luciano
المصدر
العدد
المجلد 2013، العدد 2013 (31 ديسمبر/كانون الأول 2013)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2013-11-06
دولة النشر
مصر
عدد الصفحات
10
التخصصات الرئيسية
الملخص EN
Glucagon-like peptide-1 (GLP-1) is a gut-derived incretin hormone that has been shown to improve glucose homeostasis in type 2 diabetes.
The biological effects of GLP-1 are mediated by its specific receptor GLP-1R that is expressed in a wide range of tissues, where it is responsible of the extra-pancreatic effects of GLP-1.
Since the retinal pigment epithelium (RPE), that forms the outer retinal barrier, has a key role in protecting from diabetic retinopathy (DR), we investigated the potential expression and function of GLP-1R in a RPE cell line.
ARPE-19 cells were cultured in DMEM/F12 supplemented with 10% FBS.
The expression of GLP-1R was evaluated at both mRNA and protein levels.
Then, the activation postreceptor intracellular signal transduction pathways (extracellular signal-regulated kinases 1 and 2 [ERK1/2] and protein kinase B [PKB]) were assessed by western blot in normal cells or silenced for GLP-1R in the presence or absence of 10 nmol/L GLP-1.
The potential connections between intracellular signalling pathways triggered by GLP-1 stimulation were performed before incubating cells with kinase pharmacological inhibitors of mitogen-activated protein kinase (MEK)1/2, phosphatydilinositol-3kinase (PI3K), or epidermal growth factor receptor (EGFR).
The results showed that GLP1R is expressed at both mRNA and protein level in ARPE-19 cells.
Stimulation with GLP-1 strongly activated PKB and ERK1/2 phosphorylation till 40 min of exposure.
GLP-1-mediated activation of both kinases was dependent on the upstream activation of PI3K and EGFR.
Finally, treatment with GLP-1 did not affect the spontaneous release of VEGF-A from ARPE-19 cells.
In conclusion, this paper showed that the presence of functional GLP-1R is expressed in RPE cells.
These data might represent the rationale to further investigate the potential direct beneficial effects of GLP-1 treatment against DR.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Puddu, Alessandra& Sanguineti, Roberta& Montecucco, Fabrizio& Viviani, Giorgio Luciano. 2013. Retinal Pigment Epithelial Cells Express a Functional Receptor for Glucagon-Like Peptide-1 (GLP-1). Mediators of Inflammation،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-512811
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Puddu, Alessandra…[et al.]. Retinal Pigment Epithelial Cells Express a Functional Receptor for Glucagon-Like Peptide-1 (GLP-1). Mediators of Inflammation No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-512811
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Puddu, Alessandra& Sanguineti, Roberta& Montecucco, Fabrizio& Viviani, Giorgio Luciano. Retinal Pigment Epithelial Cells Express a Functional Receptor for Glucagon-Like Peptide-1 (GLP-1). Mediators of Inflammation. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-512811
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-512811
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر