PMID- 18237532 OWN - NLM STAT- MEDLINE DCOM- 20100402 LR - 20201209 IS - 1007-8738 (Print) IS - 1007-8738 (Linking) VI - 24 IP - 2 DP - 2008 Feb TI - [Fusion expression of human beta defensin 4 in Escherichia coli and preparation of its polyclonal antibody]. PG - 150-2 AB - AIM: To construct the prokaryotic fusion expression vector of human beta defensin 4 (HBD4), and to express GST-HBD4 fusion protein in Escherichia coli (E.coli) and prepare polyclonal antibody of GST-HBD4. METHODS: The gene encoding mature peptide of HBD4 (mHBD4) was amplified by PCR from cloning vector PMD18-T/HBD4 which contained the full-length HBD4 cDNA and then cloned into prokaryotic expression vector PGEX-4T-2 to construct PGEX-4T-2/mHBD4. GST-HBD4 expression was induced by IPTG. The antiserum was prepared by immunizing rabbit with GST-HBD4.The titer and specificity of the antibody were detected by ELISA and Western blot, respectively. RESULTS: The recombinant expression vector PGEX-4T-2/mHBD4 was successfully constructed. After being induced by IPTG, The fusion protein with relative molecular mass of 32 000 was successfully expressed in E.coli and partly expressed in the soluble form in supernatant. The rabbit antibody against GST-HBD4 was obtained. The ELISA titer of antiserum against GST-HBD4 was about 1:128 000. Western blot analysis showed that the antiserum could bind to the expressed GST-HBD4 specifically. CONCLUSION: The rabbit antibody against GST-HBD4 has been successfully prepared, which lays the foundation for further studying the structure and function of HBD4. FAU - Cao, Yu-hong AU - Cao YH AD - Department of Pediatrics, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China. caoyh70@126.com FAU - Zhang, Guang-yun AU - Zhang GY FAU - Zhang, Guo-cheng AU - Zhang GC LA - chi PT - Journal Article PL - China TA - Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi JT - Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology JID - 101139110 RN - 0 (Antibodies) RN - 0 (DEFB4A protein, human) RN - 0 (Recombinant Fusion Proteins) RN - 0 (beta-Defensins) SB - IM MH - Animals MH - Antibodies/*immunology/*metabolism MH - Blotting, Western MH - Enzyme-Linked Immunosorbent Assay MH - Escherichia coli/genetics/*metabolism MH - Humans MH - Polymerase Chain Reaction MH - Rabbits MH - Recombinant Fusion Proteins/genetics/*immunology/*metabolism MH - beta-Defensins/genetics/*immunology/*metabolism EDAT- 2008/02/02 09:00 MHDA- 2010/04/03 06:00 CRDT- 2008/02/02 09:00 PHST- 2008/02/02 09:00 [pubmed] PHST- 2010/04/03 06:00 [medline] PHST- 2008/02/02 09:00 [entrez] PST - ppublish SO - Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi. 2008 Feb;24(2):150-2.