WO2005056805A1 - Particules virales contenant un vecteur derive d'alpha virus et procede de preparation de ladite particule virale - Google Patents
Particules virales contenant un vecteur derive d'alpha virus et procede de preparation de ladite particule virale Download PDFInfo
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- WO2005056805A1 WO2005056805A1 PCT/FR2004/050631 FR2004050631W WO2005056805A1 WO 2005056805 A1 WO2005056805 A1 WO 2005056805A1 FR 2004050631 W FR2004050631 W FR 2004050631W WO 2005056805 A1 WO2005056805 A1 WO 2005056805A1
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Classifications
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- C12N7/00—Viruses; Bacteriophages; Compositions thereof; Preparation or purification thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/85—Vectors or expression systems specially adapted for eukaryotic hosts for animal cells
- C12N15/86—Viral vectors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K48/00—Medicinal preparations containing genetic material which is inserted into cells of the living body to treat genetic diseases; Gene therapy
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- C12N2770/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA ssRNA viruses positive-sense
- C12N2770/00011—Details
- C12N2770/36011—Togaviridae
- C12N2770/36111—Alphavirus, e.g. Sindbis virus, VEE, EEE, WEE, Semliki
- C12N2770/36141—Use of virus, viral particle or viral elements as a vector
- C12N2770/36143—Use of virus, viral particle or viral elements as a vector viral genome or elements thereof as genetic vector
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12N2770/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA ssRNA viruses positive-sense
- C12N2770/00011—Details
- C12N2770/36011—Togaviridae
- C12N2770/36111—Alphavirus, e.g. Sindbis virus, VEE, EEE, WEE, Semliki
- C12N2770/36141—Use of virus, viral particle or viral elements as a vector
- C12N2770/36145—Special targeting system for viral vectors
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- C12N2810/00—Vectors comprising a targeting moiety
- C12N2810/50—Vectors comprising as targeting moiety peptide derived from defined protein
- C12N2810/60—Vectors comprising as targeting moiety peptide derived from defined protein from viruses
- C12N2810/6045—RNA rev transcr viruses
- C12N2810/6054—Retroviridae
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- C12N2810/00—Vectors comprising a targeting moiety
- C12N2810/50—Vectors comprising as targeting moiety peptide derived from defined protein
- C12N2810/60—Vectors comprising as targeting moiety peptide derived from defined protein from viruses
- C12N2810/6072—Vectors comprising as targeting moiety peptide derived from defined protein from viruses negative strand RNA viruses
- C12N2810/6081—Vectors comprising as targeting moiety peptide derived from defined protein from viruses negative strand RNA viruses rhabdoviridae, e.g. VSV
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12N2840/00—Vectors comprising a special translation-regulating system
- C12N2840/20—Vectors comprising a special translation-regulating system translation of more than one cistron
- C12N2840/203—Vectors comprising a special translation-regulating system translation of more than one cistron having an IRES
Definitions
- the invention relates to new viral particles containing a vector derived from an alpha-virus rendered defective for autonomous propagation and therefore for replication. It also relates to the process for the preparation of said particles.
- Semliki forest virus which falls into the category of alpha-viruses.
- SSV Semliki forest virus
- alpha-iruses can be considered, such as for example the Sindbis virus.
- the alpha-virus genome is in the form of a single-strand RNA of positive polarity comprising two open reading phases, respectively a first phase coding the proteins with enzymatic function, and a second phase coding the structural proteins. Replication takes place in the cytoplasm of the cell.
- the 5 ′ end of the genomic RNA is translated into a polyprotein (nsP 1-4) with RNA polymerase activity producing a negative strand complementary to the genomic RNA.
- the negative strand is used as a template for the production of two RNAs, respectively:
- the subgenomic RNA is transcribed from the p26S promoter present at the 3 ′ end of the RNA sequence coding for the nsp4 protein.
- the ratio of positive genomic RNA / subgenomic RNA is regulated by the proteolytic self-cleavage of the polyprotein into nsp 1, nsp 2, nsp 3 and nsp 4.
- expression of viral genes takes place in two phases. In a first phase, there is a main synthesis of positive genomic strands and negative strands. During the second phase, the synthesis of sub-genomic RNA is almost exclusive, thus leading to the production of structural proteins in very large quantities.
- the first solution consists in deleting the structural genes of the Semliki RNA in favor of the transgene, the transgene being placed under the dependence of the p26S promoter.
- Such a vector can be transferred to cells in the form of RNA or in the form of DNA.
- this solution is of little interest for in vivo applications, insofar as there is a low transfer efficiency using these genetic elements used in the absence of particles.
- a Semliki vector not in the form of DNA or RNA alone, but in the form of recombinant viral particles.
- a cell line is transfected with at least two plasmids, respectively, a plasmid carrying the RNA of the Semliki vector devoid of structural genes and a second plasmid carrying the Semliki structural genes under the control of the p26S promoter.
- viral particles which encapsulate only the defective RNA, that is to say the Semliki RNA carrying the transgene since it alone also carries an encapsidation sequence contained in the sequence of nsP2.
- the Rolls documents (1, 2) describe an SFV vector whose genome has been modified by replacing the structural genes with the gene encoding the VSV-G envelope, possibly associated with a transgene.
- the infectious particles thus obtained therefore consist of a VSV-G envelope and contain a vector derived from alpha virus.
- the system described is particularly dangerous because of its ability to replicate autonomously.
- An equivalent system is described in document WO 03/072771.
- the document Lebedeva et al. (3) describes the coelectroporation of BHK cells by: the capsid and the envelope of SFV as a control, or a derived vector in which the env gene of SFV is replaced by env sequences of the MLV retrovirus (Moloney murine leukemia), and the analysis of the viral particles thus produced.
- the mobilization of the vector SFV carrying the transgene in this case that of ⁇ -galactosidase, is dependent on the packaging of this recombinant genomic RNA by the capsid protein of SFV.
- the problem which the invention proposes to solve is to improve the mode of mobilization of the vectors derived from alpha-virus, in particular from the Semliki forest virus (SFV), so as to avoid any risk of recombination within the producing lines which can generate replicative particles.
- Another problem which the invention proposes to solve is to prepare viral particles containing a vector derived from alpha-virus, the tropism of which is not limited to the target cells of wild viruses.
- the Applicant has succeeded in producing viral particles which simultaneously meet the two above objectives by expressing in trans, in a cell line, the genes coding for structural elements not derived from the alpha virus and the vector derived from alpha- virus made defective for replication.
- the genes coding for structural elements not originating from the alpha-virus correspond to the only ENV gene of the vesicular stomatitis virus coding for the NSN-G envelope protein.
- VSV-G Using a VSV-G envelope has several advantages.
- the envelope protein of the vesicular stomatitis virus allows a mode of cellular entry by endocytosis which can be superimposed on that of alpha-viruses.
- VSV-G is a very stable protein, capable of being concentrated by ultra-centrifugation and making it possible to envisage parenteral administrations.
- this protein confers a very large tropism on the particles which contain it, thus widening the field of use of the viral particles of the invention to organisms as different as Drosophila and mammals.
- the expression in trans is obtained by co-transfection advantageously carried out in two distinct stages respectively, the transfection of the line with the plasmid expressing the gene of the envelope VSV-G, then a second transfection by the vector derived from alpha virus.
- co-transfection is carried out on 293T cells.
- the genes coding for structural elements not derived from the alpha virus correspond to the genes coding for the structural proteins of a retro irus.
- expression in trans is obtained by transfection of an encapsidation cell line, producer of retroviruses defective for replication, with the vector derived from alpha virus.
- This type of line is well known in the art, such as Phoenix ® system (http://www.stanford.edu/group/nolan/retroviral systems / plixiitml).
- packaging lines using structural genes of MLN can be used.
- these lines are obtained by stable transfection of a first plasmid expressing the GAG-POL genes and of a second plasmid expressing an ENV gene of a retrovirus or of another enveloped virus (4).
- the viral particles by triple transfection of a cell line, for example 293T cells, by introduction of a first viral element expressing the GAG and POL genes of retrovirus, of a second viral element expressing the ENV gene of retrovirus and of the vector derived from alpha-virus.
- the vector derived from alpha-virus is made defective for replication. This property is in practice obtained by the deletion of structural genes or their substitution for the benefit of the transgene (s) of interest in the vector genome.
- the genome of the vector derived from alpha-virus contains a signal allowing the packaging by the viral particle, called psi sequence.
- the sequence psi corcespond to the extended packaging sequence of MLN vectors obtained by amplification by PCR method (polymerase chain reaction) of the vector PL ⁇ CX (Clontech ®) from primers: - 5 'primer: L ⁇ CX Psi 2a: 5'- GGGACCACCGACCCACCACC -3 'and - primer 3': L ⁇ CX Psi 2b: 5'- GATCCTCATCCTGTCTCTTG -3 '.
- the psi sequence is reduced in size and corresponds to the minimum sequence.
- This modification is interesting insofar as the psi sequence can have an anchor point function for the entry of ribosomes (IRES).
- IRES ribosomes
- the Applicant also demonstrated that the presence of a retroviral packaging signal was not necessarily necessary.
- the quantity of AR ⁇ recombinants of the Semliki vector, found in the cytoplasm of the transfected cells is such that the latter are preferentially packaged in retroviral particles. This phenomenon is accentuated by the extinction of cellular genes, induced by the expression of the non-structural proteins of the Semliki virus.
- the sub-cellular localization of the replication complexes of the SFV virus could also play an important role (5). Therefore, and in a preferred embodiment, the vector genome is devoid of psi sequence.
- the applicant has also shown that it is possible to mobilize a vector as described above, containing a retroviral encapsidation sequence, by means of retroviral particles produced using a transcomplementation system based on vectors derived from the Semliki forest virus. (11).
- a transcomplementation system based on vectors derived from the Semliki forest virus. (11).
- D. is also demonstrated that the presence of a retroviral packaging signal improves the titer of the particles by approximately one log.
- These particles are effectively used to transduce cells expressing the receptor for amphotropic viruses (Pit 2), corresponding to the retroviral envelope. used. This observation has a direct consequence on the biosecurity of the retroviral particles produced by the method of Li and Garoff (11).
- the particles produced according to the method of Li and Garoff contain, in a titer close to 10 6 part ml, genomes of recombinant SFV vectors expressing the GAG / POL or ENV sequences of the retroviruses.
- the Applicant has moreover found that the mode of transfection generally used for the recombinant ARs of the Semliki vectors, namely electroporation, leads to significant cellular suffering. Also, and to allow transfection of the producer cells by methods which are gentler than electroporation, the vector derived from alpha-virus has been modified to be expressed from a eukaryotic promoter, for example a CMN promoter positioned at 5 'of the vector sequence.
- a eukaryotic promoter for example a CMN promoter positioned at 5 'of the vector sequence.
- the p26S promoter of the alpha-virus vector is advantageously mutated.
- a particle according to the invention is like a viral particle made up of structural elements not derived from an alpha-virus and containing a vector derived from alpha-virus made defective for replication, by deletion or replacement by at at least one transgene, structural genes, the structural elements of said particle not being encoded by the genome of the vector derived from alpha-virus.
- the invention relates to the use of the viral particles according to the invention for infecting cells in vitro.
- the Applicant has shown that the particles thus produced can infect a wide variety of eukaryotic cells, both human and non-human.
- the invention also relates to a pharmaceutical composition comprising the viral particles of the invention. Likewise, it relates to the use of viral particles for the preparation of a medicament intended for the treatment of cancer.
- Figure 1 is a schematic representation of the structure of the vector derived from the Semliki Forest Virus (SFV).
- SFV Semliki Forest Virus
- Figure 2 shows the mutations made in the p26S promoter.
- the mutations introduced into the p26Sml and p26Sm2 mutants with respect to the wild-type sequence (Wt) are boxed.
- the amino acid in bold indicates a change in the coding sequence.
- FIG. 3 is the result of a Northern-blot carried out from producer cells, expressing modified SFV vectors (pEGFPCl; 2: p26Sml; 3: p26Sm2; 4: SFV without transgene), with a GFP probe of pEGFPCl.
- FIG. 4 shows the capacity of the 293T and BHK 21 cells to express the vectors derived from SFV (p26Sml and p26Sm2) and mobilized by the pseudo-particles VSV-G.
- FIG. 5 is the result of a northern blot carried out from the cells infected with the supernatant of 293 T cells transfected with the plasmid pMDG and of the vectors
- - HepG2 human hepatoma line cultivated in EM containing 10% FCS (ATCC HB-8065), - BHK21: baby hamster kidney line cultivated in GMEM containing 5% FCS and 8% liquid tryptose solution phosphate (ATCC CCL- 10), - CESC: Chicken embryo obtained and cultivated according to reference 26, - High Five cell cultivated at 27 ° C in a medium of Grace's insect cells (cat n ° B85502 Invitrogen) containing 10% FCS, - Sp2 / O: Murine line of lymphoplastoids cultivated in RPMI 1640 containing 10% FCS (ATCC CRL1581). 21 Construction of the SFV vector
- the internal promoter 26S of the SFV is mutated by PCR from the vector pSFVl (Invitrogen), which is devoid of structural genes and used as template in the presence of two primers, respectively: - a primer 26SmlF containing the restriction site Bgl U appearing in bold in the following sequence: 5'-ATCCTCGAAGATCTAGGG-3 ', - a second mutated primer 26SmlR containing the Cla l restriction site appearing in bold in the following sequence: 5 -CAATATCGAT TACTAGCGAACTAATCTAGGA-3'.
- Silent mutations are then introduced into the p26S promoter to lead to the p26Sml promoter as shown in FIG. 2.
- the product thus amplified is then cloned into a plasmid pIRES2-EGFP (Invitrogen) (FIG. 1).
- a retroviral sequence designated RS, derived from an MLV virus is then inserted between the 26S mutated promoter and the IRES sequence. Fragments containing the sequence 26S mutated, the MLV retroviral sequence and the EGFP gene are then excised with Bgl II and Hpa I and then cloned into the vector pSFVl between the Bgl JJ and Sma I restriction sites.
- the 10.5 kbp fragment containing the modified SFV replicon is finally cloned between the promoter IE CMV and the polyadenylation signal SV40 pA in a vector pJRES2-EGFP in which the sequence IRES GFP has been deleted.
- the internal promoter is mutated by PCR from the plasmid SFV1 used as template in the presence of two primers respectively, a first primer 26SmlF and a second primer 26Sm2R containing a restriction site appearing in bold in the following sequence:
- the primer 26Sm2R leads to modifications of the p26S promoter as illustrated in FIG. 2.
- the amplified product is then digested with Bgl JJ and Cla I and ligated into the vector 26Sml also digested with Bgl JJ and Cla I to remove the cross-cutting fragment .
- the cells are transfected with 5 ⁇ g of the SFV 26Sml or 26Sm2 vectors.
- the second transfection medium is left in contact with the cells between 1 pm and 5 pm.
- the medium is removed and replaced with fresh medium allowing the release of the infecting particles.
- the culture medium containing the viral particles is collected 5 to 6 hours later. 41 Transfection of the BHK21 cell line with the vectors SFV 26Sml or 26Sm2 and the vectors SFV GAGPOL and SFV ENV and collection of viral particles
- the BHK 21 cells are electroporated 5 10 6 / ml (i.e. 4 10 6 cells), at a voltage of 350 V, and a capacitance of 750 ⁇ F.
- the RNAs used for electroporation corresponding to the different vectors (26Sml or m2, SFV GAGPOL and SFV ENV), are transcribed using 1.5 ⁇ g of linearized DNA using an Invitrogen Sp6 polymerase kit.
- 22 ⁇ l of the transcription product are electroporated.
- the harvesting of the recombinant particles is carried out 14 to 16 hours later.
- the supernatants are filtered and deposited on the target cells in the presence of 2 ⁇ g / ml of polybrene.
- the supernatant of transfected 293T cell lines was collected and then filtered through 0.45 .mu.m filter (Millex ® HA, Millipore) and incubated with different cell lines in the presence of fresh medium containing polybrene used at 5 micrograms per ml (Sigma).
- the control of GFP expression in infected cells is carried out using a 1 ⁇ 50 Olympus fluorescence microscope. Quantification of transfection is performed using a FACScalibur flow cytometer from Becton Dickinson ®.
- RNAse A 10 ⁇ g per ml of RNAse A (Sigma), 1 ⁇ g per milliliter of actinomycin D (Sigma), 100 units per milliliter of DNAse I (Invitrogen), 1 mg per milliliter of geneticin (Sigma), and 3 ⁇ g per milliliter of puromycin (Cayla). 67 Concentration of viral particles
- the supernatant of the transfected 293 cells is centrifuged at 150,000 g in a rotor SW41 for one hour at 4 ° C.
- the concentrated viruses are resuspended in 300 ⁇ l of PBS and 25 ⁇ l of the solution are used to infect 5.10 5 cells (293T, BHK-21, Hela, HepG2, Sp2 / O, LMH, QM7).
- RNA from the 10 6 transfected or infected cells is extracted using a total RNA isolation system (Promega ® ).
- RNA from untransfected 293T cells is extracted as a control. 2 ⁇ g of each RNA is subjected to electrophoresis on a denaturing gel, formaldehyde, and the RNA is transferred to a positively charged nylon membrane (Hybond-XL; Amersham).
- Hybond-XL a positively charged nylon membrane
- the probes correspond to a fragment of 790 bp Age I-BamH I GFP plasmid pEGFPCl (Clontech), the fragment being labeled (Rediprime ® JJ DNA labeling system; Amersham) and column purified (ProbeQuant ® G-50 Micro Columns, Amersham ) before use.
- the vectors SFV 26Sml and 26Sm2 correspond to vectors SFV, whose promoter 26S has been mutated in order to avoid possible competition between the packaging of the genomic RNA of SFV and the subgenomic RNA produced by transcription under the influence of the 26S promoter.
- the functionality of the two vectors was checked by transfection of 293T cells. The intense expression of GFP observed suggests that the transcription and translation of the modified SFV vector are correct. This first result is then confirmed by analysis on Northern Blot from the RNA extracted from 293 cells transfected with the vector SFV 26Sml.
- the GFP probe reveals the existence of two bands corresponding to genomic RNA and subgenomic RNA, the latter suggesting that the 26S promoter is still functional.
- the same test is carried out on the second vector SFV 26Sm2 comprising additional mutations.
- the detection of GFP and the analysis by Northern Blot confirm that the mutations made in the 26Sm2 promoter inhibit the production by transcription, of the subgenomic RNA (see FIG. 3, line 3).
- 293T cells are co-transfected with the plasmid pMDG, then the vector SFV 26Sml or SFV 26Sm2 as indicated above.
- the supernatant of the transfected cells is transferred to fresh 293T cells or to BHK 21 cells.
- the strong and rapid expression of the GFP obtained shows that it is possible to mobilize SFV vectors by means of cells expressing the VSV-G envelope ( figure 4).
- the highest titer is obtained with the BHK21 cells compared to the 293T and QM7 cells.
- the expression of the GFP containing the target cells is due to a true transduction by the viral particles SFV
- the following controls are carried out.
- the SFV RNA is detected by Northern Blot from RNA extracted from the infected cells (see FIG. 5).
- the producing cells in cells infected with the vector SFV 26Sml, both genomic RNA and subgenomic RNA are observed.
- the genomic RNA is detected in cells infected with the vector SFV 26Sm2.
- the signal strength suggests intense replication of the SFV vectors.
- high concentration DNase I 1000 UJ / mi
- RNA POL JJ RNA POL JJ
- GFP can be passively transferred via retroviral particles independently of any expression.
- the target cells are pretreated with two translation inhibitors, respectively geneticin and puromycin. After treatment, the target cells show a barely detectable expression of GFP, which shows that the observed GFP results from translation and not from passive transfer (Table 2).
- the co-transfection of a plasmid pEGFPCl strongly expressing GFP with a plasmid coding for VSV-G does not lead to any pseudo-transduction of GFP.
- Il Constructions The constructions described in example 1 were used. Two other derivative constructions, having a substitution of the CMV promoter by the prokaryotic promoter SP6, were also used: - The first construction, spSFV26Sml, is directly derived from SFV26Sml.
- spSFV26Sml ⁇ The second construction, spSFV26Sml ⁇ , is obtained by digestion Bgl JJ- Sma I of a plasmid pSFNl (Invitrogen ® ), within which is cloned a fragment Bgl II- Hpa I of the plasmid ⁇ IRES2 GFP (Clontecb ® ), modified by introduction of a PCR fragment containing the 3 ′ end of the nsp4 gene and generated using the primers 26SmlF and 26SmlR (cf. example 1, section 2a).
- Producing recombinant retroviruses cells derived from 293 cells, phoenix ® (http://www.stanford.edu/group/nolan/retiOviral systems / phx.html) are cultured in DMEM medium (GJJ3CO) in the presence of serum decomplemented fetal calf (Abcys).
- the producer cells are transfected using the plasmids SFV26Sml or
- the transfection is carried out using calcium phosphate (Calcium Phosphate transfection kit, Invitrogen ® ).
- the transfection is carried out by electroporation: 40 ⁇ l of replicons produced in vitro are placed in the presence of 40 ⁇ 10 5 cells and electroporated using the EasyjecT system.
- the medium is changed. 16 hours after this change, the medium is harvested to carry out the infections. During the harvest, the medium is filtered using 0.45 ⁇ m filters
- the filtered supernatants are used to infect 293T cells, cultured in 12-well plates. Infection is carried out in the presence of a polycation necessary for virus / cell interactions, polybrene (Sigma ® ) at 5 ⁇ g / ml. On the day of infection, a well of 293T target cells is trypsinized for counting. 24 hours after infection, the cells are tryp sinized for a passage in flow cytometry (FACScalibur, Becton-Dickinson ® ). The percentage of cells expressing GFP, relative to the number of cells on the day of infection, makes it possible to calculate a titer of recombinant particles (JP / ml) (Table 3).
- Controls identical to those carried out in Example 1, were carried out: - 10 ⁇ g per ml of RNAse A (Sigma ® ), 1 ⁇ g per milliliter of actinomycin D (Sigma ® ), - 100 units per milliliter of DNAse I (Invitrogen ® ), 1 mg per milliliter of geneticin (Sigma ® ).
- retroviral particles containing either the SFV vectors used to express the transcomplementation sequences of the retroviruses, or the SFV vectors comprising the sequence of the recombinant retrovirus. This observation calls into question the use of these modes of production of retroviral vectors for clinical purposes, unlike the viral particles of the invention.
- RNA is a structural element in retrovirus particles. Proc Natl Acad Sci U S A 98, 5246-51. (2001).
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BRPI0417126-8A BRPI0417126A (pt) | 2003-12-02 | 2004-11-30 | partìcula viral constituìda de elementos estruturais não provenientes de um alfa-vìrus e contendo um vetor derivado de alfa-vìrus, utilização da partìcula viral e processo de obtenção de partìculas virais |
EP04805869A EP1697529A1 (fr) | 2003-12-02 | 2004-11-30 | Particules virales contenant un vecteur derive d'alpha virus et procede de preparation de ladite particule virale |
AU2004297379A AU2004297379A1 (en) | 2003-12-02 | 2004-11-30 | Viral particles containing an alpha virus derived vector and method for preparing said viral particle |
US10/581,401 US20080118956A1 (en) | 2003-12-02 | 2004-11-30 | Viral Particles Containing An Alphavirus-Derived Vector And Method For Preparing Said Viral Particle |
CA002547922A CA2547922A1 (fr) | 2003-12-02 | 2004-11-30 | Particules virales contenant un vecteur derive d'alpha virus et procede de preparation de ladite particule virale |
JP2006541991A JP2007512827A (ja) | 2003-12-02 | 2004-11-30 | αウイルス由来ベクターを含むウイルス粒子、ならびに前記ウイルス粒子の調製方法 |
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EP2831225A1 (fr) * | 2012-03-26 | 2015-02-04 | The United States of America, As Represented by the Secretary, Dept. of Health & Human Services Office of Technology Transfer | Administration d'arn encapsulé à des cellules de mammifères |
AU2014365777B2 (en) * | 2013-12-16 | 2020-06-25 | The United States Of America, As Represented By The Secretary, Department Of Health And Human Services | Cancer immunotherapy by delivering class II MHC antigens using a VLP-replicon |
CN105176936B (zh) * | 2015-10-23 | 2019-01-11 | 中国科学院武汉物理与数学研究所 | 复制耐受型的西门利克森林病毒的亚克隆及制备方法和应用 |
WO2017083356A1 (fr) | 2015-11-09 | 2017-05-18 | Immune Design Corp. | Vecteur rétroviral pour l'administration et l'expression d'un réplicon arn exprimant des acides nucléiques hétérologues |
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WO2003072771A2 (fr) * | 2002-02-27 | 2003-09-04 | Jarmo Wahlfors | Procede de preparation d'un produit de traitement, produit de traitement correspondant et produit de synthese plasmidique |
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WO1998013511A1 (fr) * | 1996-09-25 | 1998-04-02 | The Government Of The United States Of America, Represented By The Secretary, Department Of Health And Human Services | Materiau genetique de conditionnement retroviral amplifie dans le cytoplasme par des vecteurs autocatalytiques de togavirus |
WO2003072771A2 (fr) * | 2002-02-27 | 2003-09-04 | Jarmo Wahlfors | Procede de preparation d'un produit de traitement, produit de traitement correspondant et produit de synthese plasmidique |
Non-Patent Citations (2)
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LEBEDEVA IRINA ET AL: "Infectious particles derived from Semliki forest virus vectors encoding murine leukemia virus envelopes", JOURNAL OF VIROLOGY, vol. 71, no. 9, 1997, pages 7061 - 7067, XP002284768, ISSN: 0022-538X * |
LUNDSTROM KENNETH: "Alphavirus vectors as tools in cancer gene therapy.", TECHNOLOGY IN CANCER RESEARCH & TREATMENT. UNITED STATES FEB 2002, vol. 1, no. 1, February 2002 (2002-02-01), pages 83 - 88, XP001182046, ISSN: 1533-0346 * |
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US20080118956A1 (en) | 2008-05-22 |
BRPI0417126A (pt) | 2007-12-11 |
KR20070085044A (ko) | 2007-08-27 |
RU2398875C2 (ru) | 2010-09-10 |
CN101006180A (zh) | 2007-07-25 |
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