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| Content Provider | PubMed Central |
|---|---|
| Author | Matsuura, Y. Harada, S. Suzuki, R. Watanabe, Y. Inoue, Y. Miyamura, T. Saito, I. |
| Abstract | The putative envelope protein of hepatitis C virus (HCV) was expressed in insect cells by using a baculovirus expression vector and in monkey COS cells under the control of exogenous promoters. The expressed envelope proteins, identified by immunoblot analysis using sera from patients with chronic HCV infection, were a series of glycoproteins of 35 to 24 kDa (gp35-24) in insect cells and a single species of glycoprotein of 35 kDa (gp35) in monkey cells. The size difference of these proteins was due to the different degrees of glycosylation. The envelope proteins expressed in these cells were produced by common specific cleavage from the precursor protein, and cleavage positions of the envelope protein were mapped at about amino acids 190 and 380. The gp35-24 proteins expressed in insect cells were used for detection of antibody against HCV envelope protein in patient sera. The results showed that (i) the antibody is detected in 2 to 17% of various patients with hepatitis C, (ii) three patients were apparently cured after acquiring the antienvelope antibody, and (iii) in sera of patients with more than a 20-year history of infection, the antibody sometimes coexisted with HCV. These results suggest that the antienvelope antibody is neutralizing only in limited number of patients with hepatitis C. |
| Starting Page | 1425 |
| File Format | |
| ISSN | 10985514 |
| e-ISSN | 10985514 |
| Journal | Journal of Virology |
| Issue Number | 3 |
| Volume Number | 66 |
| Language | English |
| Publisher Date | 1992-03-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Virology Immunology Microbiology Insect Science |
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