کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10956201 | 1098785 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hypo-glycosylated human follicle-stimulating hormone (hFSH21/18) is much more active in vitro than fully-glycosylated hFSH (hFSH24)
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیولوژی سلول
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Hypo-glycosylated hFSH21/18 (possesses FSHβ21 and FSHβ18bands) was isolated from hLH preparations by immunoaffinity chromatography followed by gel filtration. Fully-glycosylated hFSH24 was prepared by combining the fully-glycosylated FSHβ24 variant with hCGα and isolating the heterodimer. The hFSH21/18 glycoform preparation was significantly smaller than the hFSH24 preparation and possessed 60% oligomannose glycans, which is unusual for hFSH. Hypo-glycosylated hFSH21/18 was 9- to 26-fold more active than fully-glycosylated hFSH24 in FSH radioligand assays. Significantly greater binding of 125I-hFSH21/18 tracer than hFSH24 tracer was observed in all competitive binding assays. In addition, higher binding of hFSH21/18 was noted in association and saturation binding assays, in which twice as much hFSH21/18 was bound as hFSH24. This suggests that more ligand binding sites are available to hFSH21/18 in FSHR than to hFSH24. Hypo-glycosylated hFSH21/18 also bound rat FSHRs more rapidly, exhibiting almost no lag in binding, whereas hFSH24 specific binding proceeded very slowly for almost the first hour of incubation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular and Cellular Endocrinology - Volume 382, Issue 2, 15 February 2014, Pages 989-997
Journal: Molecular and Cellular Endocrinology - Volume 382, Issue 2, 15 February 2014, Pages 989-997
نویسندگان
George R. Bousfield, Vladimir Y. Butnev, Viktor Y. Butnev, Yasuaki Hiromasa, David J. Harvey, Jeffrey V. May,