Expression, purification and characterization of recombinant human globular domain of adiponectin

Hong Lei Liu, Xi Li, Hou Yan Song, Qi Qun Tang

Research output: Contribution to journalArticlepeer-review


Purpose: To obtain bioactive globular domain of human adiponectin. Methods: cDNA encoding human globular domain of adiponectin (gAPN) was amplified by PCR, and cloned in the expression vector pET28a(+). The recombinant expression plasmid pET28a(+)-gAPN was transformed into E. coli BL21 (DE3). When A 600 (nm) reached 0.6, this transformant was induced for expression of recombinant protein by IPTG. Recombinant protein was obtained after denaturation, purification by Ni+-affinity chromatography and renaturation. The bioactivity of recombinant protein was evaluated by Streptozocin (STZ)-induced hyperglycemia model. Results: After induction for 3 hours by IPTG, the recombinant protein was over 30% of total bacterial protein. The recombinant protein was expression in form of inclusion bodies. After purification, SDS-PAGE analysis indicated that molecular weight of recombinant protein was about 17 000 and the purity was up to 90%. Western blot indicated that recombinant protein could react with anti-APN polyclonal antibody. The recombinant protein could significantly reduce the level of blood glucose in STZ-induced hyperglycemia model. Conclusions: We successfully expressed human globular domain of adiponectin (gAPN) in E. coli BL21 (DE3) and obtained the bioactive protein.

Original languageEnglish (US)
Pages (from-to)97-100
Number of pages4
JournalFudan University Journal of Medical Sciences
Issue number1
StatePublished - Jan 2006
Externally publishedYes


  • Adiponectin
  • Expression and purification
  • Hyperglycemia model
  • Recombinant protein

ASJC Scopus subject areas

  • Medicine(all)

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