Population studies have consistently shown a highly inverse correlation between plasma concentration of high-density lipoprotein and the risk of atherosclerotic cardiovascular disease in humans. High-density lipoprotein (HDL) as a therapeutic target is an intense area of ongoing investigation. Aiming to solve the shortcomings of native HDL application, we prepared recombinant human HDL (rhHDL) that contains a similar composition and has similar functions with native HDL. Six kinds of recombinant human apolipoproteins (rhapo)-rhapoA-I, rhapoA-II, rhapoA-IV, rhapoC-I, rhapoC-II, and rhapoE-were expressed in Pichia pastoris and purified with chromatography. By the facilitation of cholate, six kinds of rhapo penetrated among the phosphatidylcholine acyl chains. After purification by density-gradient centrifugation, rhHDL was acquired. Based on morphological observation, we confirmed that the micellar complexes of rhapo with phosphatidylcholine and cholesterol were prepared. We carried on comparative studies in vitro and in vivo between native HDL and rhHDL. Cellular cholesterol efflux assays showed that rhHDL could promote the efflux of excess cholesterol from macrophages. Furthermore, rhHDL has similar effects with native HDL on the blood lipid metabolism in hyperlipidemic mice. In conclusion, rhHDL has similar effects on antiatherosclerosis with native HDL through reverse cholesterol transport, antioxidative, and antithrombotic properties. It could be used as a therapeutic HDL-replacement agent.
[1]Jilin Univ, Clin Hosp 2, Dept Obstet & Gynecol, Changchun 130041, Peoples R China.
[2]Jilin Univ, Coll Pharm, Dept Regenerat Med, Changchun 130041, Peoples R China.
[3]Jilin Univ, Clin Hosp 3, Changchun 130041, Peoples R China.
[4]Guangdong Pharmaceut Univ, Coll Life Sci & Biopharmacol, Dept Biotechnol, Guangzhou, Guangdong, Peoples R China.
[5]Changchun Univ Chinese Med, Preparat Ctr, Changchun, Peoples R China.
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