کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10770907 1050836 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Glucagon production of the rat insulinoma cell line INS-1-A quantitative comparison with primary rat pancreatic islets
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Glucagon production of the rat insulinoma cell line INS-1-A quantitative comparison with primary rat pancreatic islets
چکیده انگلیسی
The rat insulinoma cell line INS-1 is the most commonly used clonal cell model in pancreatic β-cell research. Considering the multihormonality of many insulinomas we examined as to how INS-1 cells comply with the notion of resembling a pure β-cell line. Glucagon immunoassays revealed that INS-1 cells secrete glucagon in a similar range as islets. By immunohistochemistry we detected a cytoplasmic glucagon signal in INS-1 cells which colocalized with C-peptide. Cellular content of preproglucagon-mRNA and glucagon protein in INS-1 cells was less than two percent of the respective values in islets, which probably reflects differences in the intracellular metabolism and/or secretory pathways. Taken together, it is obvious that INS-1 cells do not represent an exclusively insulin producing β-cell line.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 330, Issue 1, 29 April 2005, Pages 327-332
نویسندگان
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