Screening and identification of a novel DNA aptamer against albumin
- VernacularTitle:针对于白蛋白的新型核酸适配体的筛选与鉴定
- Author:
Xiaoou LI
;
Yan HU
;
Yacong AN
;
Jinhong DUAN
;
Xianda YANG
- Keywords:
aptamer;
SELEX;
albumin
- From:
Basic & Clinical Medicine
2017;37(7):935-938
- CountryChina
- Language:Chinese
-
Abstract:
Objective To develop an albumin aptamer that may potentially serve as a selective ligand for albumin removal from experimental samples.Methods A single-stranded 59nt DNA library that contains 21 random oligo nucleotides was synthesized in vitro.An albumin aptamer A6 was developed by SELEX technique using bovine serum albumin (BSA) as target.The enrichment of aptamer and evaluation of its binding properties were monitored by flow cytometry.The secondary structure of A6 was predicted by MFord software.Results The aptamer A6 strongly bound to BSA with a Kd of 77.4 nmol/L,and had minimal cross reactivity with control proteins including ovalbu min,IgG,and trypsin.Conclusions Aptamer A6 may be a potential tool in albumin removal.
