کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2462700 1555087 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Molecular cloning, in vitro expression and bioactivity of quail BAFF
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Molecular cloning, in vitro expression and bioactivity of quail BAFF
چکیده انگلیسی

B cell activating factor (BAFF), belonging to the TNF (tumor necrosis factor) family, is critical for B cell survival and maturation. In the present study, a quail BAFF cDNA, named qBAFF, was amplified from quail spleen by RT-PCR and RACE (rapid amplification of cDNA ends) strategies. The open reading frame (ORF) of qBAFF cDNA encodes a protein consisting of 288-amino acid. The deduced amino acid sequence contains a predicted transmembrane domain and a putative furin protease cleavage site like other identified BAFF homologues. The qBAFF shows 96, 93, 93, 53 and 51% amino acid sequence identity with chicken (cBAFF), goose (gBAFF), duck (dBAFF), human (hBAFF) and mouse BAFF (mBAFF), respectively, with the functional soluble parts of qBAFF is 98, 99, 98, 78 and 71%, respectively. RT-PCR showed that BAFF is expressed in many tissues in the quail, including bursa, spleen, liver, brain, heart, intestine, kidney, thymus and muscle. Recombinant soluble qBAFF (qsBAFF) fused with His6 tag was efficiently expressed in Escherichia coli BL21 (DE3) and its molecular weight of ∼19 kDa was identified by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and Western blotting. In vitro, purified qsBAFF was able to promote the survival of quail bursa B cells. Our results suggest that qBAFF plays an important role in survival of quail B cells cultured in vitro.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Veterinary Immunology and Immunopathology - Volume 130, Issues 1–2, 15 July 2009, Pages 125–130
نویسندگان
, , , , ,