Comparison between hepatitis B surface antigen (HBsAg) particles derived from mammalian cells (CHO) and yeast cells (Hansenula polymorpha): Composition, structure and immunogenicity

被引:114
作者
Diminsky, D
Schirmbeck, R
Reimann, J
Barenholz, Y
机构
[1] HEBREW UNIV JERUSALEM, HADASSAH MED SCH, DEPT BIOCHEM, IL-91120 JERUSALEM, ISRAEL
[2] UNIV ULM, INST MICROBIOL, D-89069 ULM, GERMANY
关键词
hepatitis B surface antigen; vaccine; lipid and protein composition; immune response; VESICULAR STOMATITIS-VIRUS; CYTOTOXIC T-CELL; LIPID-COMPOSITION; IN-VIVO; PROTEINS; RESPONSES; IMMUNIZATION; PERFORMANCE; COMPONENTS; EXPRESSION;
D O I
10.1016/S0264-410X(96)00239-3
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
The composition, structure and immunogenicity of hepatitis B surface antigen (HBsAg) particles derived from Chinese hamster ovary (CHO) cells and from cells of the yeast Hansenula polymorpha were compared. The particles were similar in size distribution (mean 20-33 nm), in shape (spherical), in gross composition (protein to lipid weight ratio of 60:40), and in types of lipids (phospholipids much greater than sterols=sterol esters=triacyl-glycerols). Differences related to genetic engineering and type of host cells were found in peptide and lipid compositions. CHO-HBsAg has three peptides. S, M and L, each in two forms of glycosylation, while the Hansenula-HBsAg has only the nonglycosylated S peptide. The electrical surface potential at the lipid/water interface of HBsAg derived from Hansenula is more negative than that of HBsAg derived from CHO, which was close to neutrality. Although the numbers of cysteine residues (all in the S peptides) are identical (14), 11 of them are free thiols in the CHO-HBsAg, compared with three to four in the Hansenula-HBsAg. The fact that 85% of the phospholipids are hydrolyzed by phospholipase C and that all the aminophospholipids react with trinitrobenzenesulfate suggests that the particles derived from both cell types are either leaky vesicles or have a lipoprotein-like structure. Subcutaneous injection into mice of fluorescein-isothiocyanate-labeled HBsAg particles from both sources resulted in their accumulation in the marginal sinus of lymph nodes. The humoral responses to subcutaneous injection into mice of CHO- and Hansenula-HBsAg were similar; however, the cytotoxic T lymphocyte response to CHO-HBsAg was lower. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:637 / 647
页数:11
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