Author/Editor | Daemen, Catharina Arnoldine Hubertina Henric; Schoemaker, Trieneke Jolanda; Žorž, Mirjan; Gašperšič, Jernej; Jarc, Marko; Banjac, Marko | |
Title | Methods for providing purified viral particles of semliki forest virus (SFV), preparations obtainable thereby, and uses thereof | |
Type | monografija | |
Place | Geneve | |
Publisher | World Intellectual Property Organization (WIPO) | |
Publication year | 2020 | |
Volume | str. 40 str. | |
Language | eng | |
Abstract | The invention relates to purified vaccine preparations and methods for providing them. Provided is a method for providing purified viral particles of SFV, comprising the steps of i) providing a preparation of SFV replicon particles; ii) subjecting said preparation to an endonuclease treatment under conditions allowing for degradation of exogenous/host cell DNA and RNA; iii) bringing said endonuclease-treated preparation with a zwitterionic buffer solution to a conductivity of up to about 5.5 mS/cm; iv) contacting the preparation obtained in step (iii) with a strong anion exchange resin; v) eluting the bound SFV replicon particles from said anion exchange resin; vi) bringing the eluted SFV particles to a conductivity in the range of 7.0 to 9.0 mS/cm; vii) contacting the preparation obtained in step (vi) with a strong cation exchange resin under conditions and for a time sufficient to bind to said resin; viii) eluting the bound SFV replicon particles from said cation exchange resin with a zwitterionic buffer solution and collecting at least one fraction containing purified SFV replicon particles; and ix) stabilizing the at least one purified fraction by adding human serum albumin (HSA) to a final concentration in the range of about 0.5 - 2 w/v%, preferably about 1 w/v%. |