WO1999023237A1 - Vecteur peptidique de transfection, composition le contenant et leurs applications - Google Patents
Vecteur peptidique de transfection, composition le contenant et leurs applications Download PDFInfo
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- WO1999023237A1 WO1999023237A1 PCT/FR1998/002344 FR9802344W WO9923237A1 WO 1999023237 A1 WO1999023237 A1 WO 1999023237A1 FR 9802344 W FR9802344 W FR 9802344W WO 9923237 A1 WO9923237 A1 WO 9923237A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/005—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from viruses
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/69—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit
- A61K47/6901—Conjugates being cells, cell fragments, viruses, ghosts, red blood cells or viral vectors
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- 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
- C12N15/87—Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation
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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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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K2319/00—Fusion polypeptide
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2710/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA dsDNA viruses
- C12N2710/00011—Details
- C12N2710/10011—Adenoviridae
- C12N2710/10211—Aviadenovirus, e.g. fowl adenovirus A
- C12N2710/10222—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2710/00—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA dsDNA viruses
- C12N2710/00011—Details
- C12N2710/10011—Adenoviridae
- C12N2710/10311—Mastadenovirus, e.g. human or simian adenoviruses
- C12N2710/10322—New viral proteins or individual genes, new structural or functional aspects of known viral proteins or genes
Definitions
- the present invention relates to a peptide transfection vector, to a composition containing said vector as well as to their applications in the treatment (drugs) and prevention (vaccines) of human and animal diseases.
- Said vector is in particular capable of delivering to suitable target cells, nucleic sequences, proteins, peptides and chemical substances of interest.
- transfection vectors There are basically two main types of transfection vectors:
- - natural transfection vectors such as viruses or modified viruses, which are effective but which have limits of use: non-specific tissue, need to obtain constructs for each gene of interest and potential risks for 'environment, which lead to the establishment of costly and restrictive clinical infrastructure for the patient and staff; - non-viral agents (synthetic vectors), capable of promoting the transfer and expression of chemical substances such as DNA, in eukaryotic cells.
- the latter strategy represents an alternative to viral vectors.
- cationic polymers and cationic lipids.
- the former are generally made up of polylysine, while there is a wide variety of cationic lipids (liposomes or pseudo-liposomes), each giving variable transfection efficiencies depending on cell types (DOTMA, etc.).
- the lipid part which interacts with and / or destabilizes the membranes allows the fusion and entry of the DNA / liposome complex.
- DNA transfection with liposomes although less immunogenic than that carried out using cationic polymers, is in fact a relatively ineffective process.
- targeting is obtained for example by coupling ligands to polylysine polymers; targeting can also be done after internalization, by directing the complexes towards the nucleus (PCT International Application WO 95/31557) and
- an endosolytic agent in the complex, such as adenoviral particles (Request PCT International WO 93/07283) or more recently synthetic peptides with endosomal activity, which increase the release of DNA into the cytoplasm.
- compositions comprising (i) the nucleic acid to be transfected, (ii) a transfection agent, such as a cationic polymer and / or a lipofectant, (iii) a peptide compound involved in the condensation of the nucleic acid, consisting in whole or in part of peptide units having a majority of basic amino acids such as lysine, histidine, arginine (histones, nucleoline, protamine or their derivatives) ) and possibly (iv) a targeting element making it possible to direct the transfer of the nucleic acid, such as an intracellular type ligand such as a nuclear localization signal sequence (NLS) which favors the accumulation of trans DNA - made within the nucleus and which can be associated with the peptide compound to form a chimeric peptide comprising a protein fragment (histone or protamine or nucleoline) and an NLS sequence.
- a transfection agent such as a cationic polymer and / or
- compositions for the transfection of eukaryotic cells which comprise the nucleic acid to be transfected, at least one cationic lipid at a suboptimal concentration and at least one acid peptide (active on the membrane) , which destabilizes the endosomal membrane and thus increases the efficiency of transfection.
- the positive charge / negative charge ratio is between 0 and 3.
- the peptides selected are derived from the Yinfluenza virus, to induce an effective rupture of the endosomes. The presence of lipids is necessary, in this composition, because the selected peptide does not allow the passage of the first cell membrane.
- nucleic acid transfection complex which comprises a fusion protein consisting of a cellular factor (growth factor, viral antigen, toxin, integrin or lipoprotein) and a basic polycationic peptide comprising arginine and / or lysine residues.
- a cellular factor growth factor, viral antigen, toxin, integrin or lipoprotein
- a basic polycationic peptide comprising arginine and / or lysine residues.
- a transfer peptide which comprises three parts: (1) a ligand L1 (peptide of 2 to 100 amino acids, capable of binding to a binding site on the surface of eukaryotic cells ( membrane receptor) (example: RGD peptide, binding domain for growth factors, hormones, viral antigens or lipoproteins; (2) an L2 ligand similar to L1 (peptide of 2 to 20 amino acids), which binds to the external nuclear membrane of eukaryotic cells, such as an NLS sequence and (3) an L3 ligand corresponding to a basic peptide (3 to 100 amino acids) (histone fragment H1 or H2B, for example).
- L1 peptide of 2 to 100 amino acids, capable of binding to a binding site on the surface of eukaryotic cells ( membrane receptor)
- RGD peptide binding domain for growth factors, hormones, viral antigens or lipoproteins
- L2 ligand similar to L1 peptide of 2 to 20 amino acids
- This Application therefore have a general ligand structure of a membrane receptor-ligand of the external nuclear membrane-basic peptide.
- a structure has been proposed in order to improve the specificity of the complex with respect to target cells, but has a toxici tee of the same order as that of liposomes; in addition, the construction must be adapted according to the target cells (presence of specific receptors on the target cells) and
- the synthetic peptide comprises a polymer chain risk of basic amino acids, preferably in the C-terminal position (10-50 amino acids, such as lysine, arginine and ornithine), an NLS peptide (6-15 amino acids, such as the NLS sequence of the SV40 T antigen, the NLS sequence of the polyome T antigen, the NLS sequence of adenovirus El a or the NLS sequence of adenovirus Elb, preferably in the N-terminal position and a hinge region of neutral amino acids (6-50 amino acids selected from glycine, alanine, leucine and isoleucine), between the polymer chain and the NLS peptide.
- basic amino acids preferably in the C-terminal position (10-50 amino acids, such as lysine, arginine and ornithine
- an NLS peptide (6-15 amino acids, such as the NLS sequence of the SV40 T antigen, the NLS sequence of the polyome T antigen, the NLS sequence of a
- the preferred NLS sequence is the T antigen sequence of the SV40 virus (small basic amino acid sequence: PKKKRKV), which is effective in mammalian cells or a short hydrophobic sequence which contains one or more basic amino acids (KIPIK).
- the hinge sequence comprises 6-26 neutral amino acids selected only from Gly (G), Ala (A), Leu (L) and Ile (I).
- the ratio (by weight) pe ⁇ tide : DNA is between 1: 1 and 1:10.
- the peptide described in this document hardly crosses the cell membrane and this is the reason why, in this International Application, it is recommended to treat the cells before transfection: the cells are treated with a hypertonic solution, then with a hypotonic solution in the presence of the nucleic acid-peptide complex.
- the hypertonic solution may contain PEG (0.3 M-0.6 M) and sucrose (10-25%). These different complexes have the property of condensing DNA and promoting its association with the cell membrane; however, they are far from being as efficient as the viral vectors, in particular due to insufficient condensation of the DNA to be transfected and / or of the difficulties encountered by the transfected DNA to leave the endosome without being degraded and for penetrate the cell nucleus.
- compositions comprising an adenoviral protein complex consisting of: A. an adenoviral protein complex, namely:
- pentons each comprising at least one fiber and one penton base, to the exclusion of any other constituent element of the genome of an adenovirus, which fiber (s) and base of the penton are derived either from the same adenovirus, either of different adenoviruses, said pentons being linked by the penton bases and forming a dodecahedron structure, stable to proteolytic enzymes, which complex has a molecular weight of between 4.8 ⁇ 10 6 and 6.6 ⁇ 10 6 ;
- penton bases to the exclusion of any other constituent element of the genome of an adenovirus, which penton bases are derived either from the same adenovirus or from different adenoviruses, and form a dodecahedron structure, stable to proteolytic enzymes and in that it has a molecular weight between 3.2.10 6 and 4.10 6 .
- a ligand between the adenoviral protein complex and the nucleic acid such as peptides whose N-terminal part comprises the N-terminal amino acid sequence of an adenovirus fiber of any serotype (area of attachment to the adenoviral protein complex) and the C-terminal part of which comprises a polylysine or a polyarginine.
- the transfection vectors described in this Application allow the internalization of the nucleic sequence to be transfected and increase the permeability of the endosomes; however, it is a relatively complex structure that mimics the behavior of adenoviruses; in fact, the adenovirus particles are relatively complex and comprise several substructures; in particular the external part or capsid is formed mainly of three proteins: the hexon, the base of the penton and the fiber; the fiber allows the attachment of the virion to a cellular receptor, while the base of the penton allows the internalization of the virion.
- a peptide derived from the adenovirus fiber protein is capable of efficiently transferring nucleic acid sequences or proteins, in the absence of liposomes and cell processing.
- the subject of the present invention is a peptide vector for transfection of a chemical substance selected from the group consisting of nucleic acid sequences, proteins, peptides and pharmacologically active chemical substances, characterized in that it contains, in addition to said chemical substance, at least one transfection peptide derived in whole or in part from an adenovirus fiber and comprising at least one zone consisting of at least 50% hydrophobic amino acids selected from the group consisting of alanine, valine, phenylalanine, isoleucine, leucine, proline and methionine.
- said peptide is derived from a fiber of an adenovirus selected from the group consisting of Ad2, Ad3, Ad4, Ad7, Ad8, Ad9, Adll, Adl2, Adl5, Adl6, Ad21, Ad40, Ad41, F AVI (CELO) and FAV7 or a fragment of the V40 protein of the SV40 virus.
- said transfection peptide comprises at least:
- Xo-Lys- Arg-Val-Arg (XoKRVR) (SEQ ID NO: l), Xo-Lys-Arg-Ala-Arg (XoKRAR) (SEQ ID NO: 2), Xo-Lys-Arg-Ser-Arg (XoKRSR) (SEQ ID NO: 3), Xo-Lys- Arg-Leu-Arg (Xo-KRLR) (SEQ ID NO: 4), Xo-Lys-Arg-Thr-Arg (XoKRTR) (SEQ ID NOS), Xo- Pro-Lys-Lys-Pro-Arg (XoPKKPR) (SEQ ID NO: 6), in which Xo is zero or represents Thr (T), Ala (A), Ser-Lys (SK) or Ser (S),
- a hydrophobic sequence comprising between 7 and 50 amino acids, derived from an adenovirus fiber and selected from the group consisting of killed by at least one of the following sequences Xi-Phe-Asn-Pro-Val-Tyr-Pro-Tyr-X 2 (X ⁇ FNPVYPYX 2 ) (SEQ ID NO: 7), X ⁇ -Phe-Asp-Pro-Val- Tyr-Pro-Tyr-X 2 (X1FDPV ⁇ PYX2) (SEQ ID NO: 8), in which:
- Xi is zero or represents a sequence of at most 43 amino acids, preferably a sequence of 5 to 15 amino acids, comprising hydrophobic and / or polar and / or acid-charged amino acids, and in particular one of the following sequences: Leu -Ser-Asp-Ser (LSDS) (SEQ ID NO: 9), Leu- Ser-Thr-Ser (LSTS) (SEQ ID NO: 10), Leu-Ser-Ser-Ser (LSSS) (SEQ ID NO: ll), Pro-Ser-Glu-Asp-Thr (PSEDT) (SEQ ID NO: 12), Val-Asp-Asp-Gly (VDDG) (SEQ ID NO: 13), Thr-Gln-Tyr-Ala-Glu -Glu-Thr-Glu-Glu-Asn-Asp-Asp (TQYAEETEENDD) (SEQ ID NO: 14) or X 3 -Glu-Asp-Asp (X3EDD)
- X 2 is zero or represents a sequence of at most 43 amino acids, preferably a sequence of 5 to 15 amino acids, comprising hydrophobic and / or polar and / or charged amino acids, and in particular one of the following sequences: Glu -Asp-Glu-Ser (EDES) (SEQ ID NO: 16), Asp-Thr- Glu-Thr (DTET) (SEQ ID NO: 17), Asp-Ala-Asp-Asn (DADN) (SEQ ID NO: 18), Asp-Pro-Phe-Asp (DPFD) (SEQ ID NO: 19), Gly-Tyr-Ala-Arg (GYAR) (SEQ ID NO: 20), Glu-His-Tyr-Asn (EHYN) ( SEQ ID NO: 21), Asp-Thr-Ser-Ser (DTSS) (SEQ ID NO: 22) or Asp-Thr-Phe-Ser (DTFS) (SEQ ID NO: 23) and
- - basic charged amino acids the following amino acids: Lys, Arg and ornithine; and - neutral polar amino acids, the following amino acids: Gly, Ser, Thr, Cys, Tyr, Asn, Gin, His and Trp.
- said transfection peptide is branched and comprises at least two fragments derived from an adenovirus fiber; said fragments each comprise a segment of an NLS sequence and a hydrophobic sequence, as defined above and are linked together by a polymeric sequence such as a polymeric sequence of basic amino acids.
- the chemical is a nucleic acid sequence
- it is selected from the genes which code for a polypeptide exhibiting therapeutic activity, the antisense sequences and the ribozymes.
- a coding sequence also comprises a promoter active for the expression of the poly peptide.
- Said promoter is in particular selected from the group consisting of constitutive promoters and inducible promoters.
- such a transfection peptide vector comprising neither lipids (in the form of liposomes, for example) nor penton base is capable of efficiently transfecting, in particular nucleic acid sequences of any type. how big, down to the nucleus without poisoning the transfected cell.
- the exogenous nucleic acid sequence, the protein of interest or any other chemical substance, associated with the said transfection vector enters the cell (internalization).
- the transfection peptide-cell receptor interaction significantly increases both the internalization of the transfection vector and the permeability of the endosomes, which significantly increases the passage of nucleic acid. exogenous, protein of interest or any other chemical from the endosomes to the cytoplasm and to the nucleus, in comparison with the use of a vector including lipids (in the form of liposomes, for example).
- peptide vectors for transfection prove to be more effective and less toxic than compositions containing liposomes (cationic lipids or lipofectants).
- said transfection peptide comprises at least:
- Xo-Lys- Arg-Val-Arg (XoKRVR) (SEQ ID NO: l), Xo-Lys-Arg-Ala-Arg (XoKRAR) (SEQ ID NO: 2), Xo-Lys-Arg-Ser-Arg (XoKRSR) (SEQ ID NO: 3), Xo-Lys- Arg-Leu-Arg (Xo-KRLR) (SEQ ID NO: 4), Xo-Lys-Arg-Thr-Arg (XoKRTR) (SEQ ID NO: 5), Xo- Pro-Lys-Lys-Pro-Arg ( XoPKKPR) (SEQ ID NO: 6), in which Xo is zero or represents Thr (T), Ala (A), Ser-Lys (SK) or Ser (XoKRVR) (SEQ ID NO: l), Xo-Lys-Arg-Ala-Arg (XoKRAR) (SEQ ID NO: 2),
- a hydrophobic sequence comprising between 7 and 50 amino acids, derived from an adenovirus fiber and selected from the group consisting of at least one of the following sequences Xi-Phe-Asn-Pro-Val-Tyr-Pro- Tyr-X 2 (X ⁇ FNPVYPYX 2 ) (SEQ ID NO: 7), X ⁇ -Phe-Asp-Pro-Val-Tyr-Pro-Tyr-X 2 (X1FDPVYPYX2) (SEQ ID NO: 8), in which:
- Xi is zero or represents a sequence of at most 43 amino acids, preferably a sequence of 5 to 15 amino acids, comprising hydrophobic and / or polar and / or acid-charged amino acids, and in particular one of the following sequences: Leu-Ser -Asp-Ser (LSDS) (SEQ ID NO: 9), Leu- Ser-Thr-Ser (LSTS) (SEQ ID NO: 10), Leu-Ser-Ser-Ser (LSSS) (SEQ ID NO: ll) , Pro-Ser-Glu-Asp-Thr (PSEDT) (SEQ ID NO: 12), Val-Asp-Asp-Gly (VDDG) (SEQ ID NO: 13), Thr-Gln-Tyr-Ala-Glu-Glu -Thr-Glu-Glu-Asn-Asp-Asp (TQYAEETEENDD) (SEQ ID NO: 14) or X 3 -Glu-Asp-Asp (X3ED
- X 2 is zero or represents a sequence of at most 43 amino acids, preferably a sequence of 5 to 15 amino acids, comprising hydrophobic and / or polar and / or charged amino acids, and in particular one of the following sequences: Glu-Asp -Glu-Ser (EDES) (SEQ ID NO: 16), Asp-Thr- Glu-Thr (DTET) (SEQ ID NO: 17), Asp-Ala-Asp-Asn (DADN) (SEQ ID NO: 18) , Asp-Pro-Phe-Asp (DPFD) (SEQ ID NO: 19), Gly-Tyr-Ala-Arg (GYAR) (SEQ ID NO: 20), Glu-His-Tyr-Asn (EHYN) (SEQ ID NO: 21), Asp-Thr-Ser-Ser (DTSS) (SEQ ID NO: 22) or Asp-Thr-Phe-Ser (DTFS) (SEQ ID NO: 23), which transfection peptide
- the polymeric sequence of basic amino acids comprises between 10 and 50 amino acid residues, selected from the group consisting of lysine, arginine and ornithine.
- the cationic polymer sequence is selected from the group consisting of polyamines and polymers of quaternary ammonium; a preferred polyamine is polyethyleneimine (PEI).
- said poly alcohol is preferably C 3 -C 20, and in particular glycerol or dextrans.
- the NLS sequence is at the N-terminus of the transfection peptide and the polymeric basic amino acid sequence is at the C-terminus of said transfection peptide.
- the transfection peptide / nucleic acid ratio is understood between 0.3: 1 and 15: 1, preferably between 2: 1 and 6: 1, preferably between 4: 1 and 6: 1.
- a subject of the invention is also a composition, characterized in that it essentially consists of a transfer vector as defined above and a suitable vehicle selected from the group consisting of bile salts, antiproteases, cyclodextrins and their derivatives, antiseptics and polyis.
- a suitable vehicle selected from the group consisting of bile salts, antiproteases, cyclodextrins and their derivatives, antiseptics and polyis.
- antiviral agents antisense sequences or ribozymes
- the present invention also relates to a process for the in vitro transfection of eukaryotic cells with a chemical substance selected from the group consisting of nucleic acid sequences, proteins, peptides and pharmacologically active chemical substances, characterized in that that it comprises contacting and incubating a peptide transfection vector in accordance with the invention, in a dilution buffer comprising 100-150 mM NaCl with eukaryotic cells for 15 to 120 minutes at temperature ambient, the chemical substance to be transfected: transfection peptide ratio being between 0.3: 1 and 15: 1, preferably between 2: 1 and 6: 1, preferably between 4: 1 and 6: 1.
- Figure 1 illustrates the transfer of the luciferase gene with peptide I, as a function of time ( Figure 1A) or as a function of the NaCl concentration ( Figure 1B).
- FIG. 2 illustrates the kinetics of the expression of the luciferase gene; this figure comprises on the abscissa the transfection peptide / DNA or DOT AP / DNA ratios and on the ordinate, the percentage of transfection at J1 (B), J2 (H), J3 (B) and J6 (0); - Figure 3 shows the migrations obtained on a retardation gel, depending on the amount of transfection peptide;
- FIG. 4 illustrates the transfections obtained with the DOSPER and DOTAP liposomes; this figure comprises on the abscissa the liposome / DNA ratios and on the ordinate the RLU (Related Light Unit) / 10sec / 10 5 cells;
- FIG. 5 illustrates the kinetics of entry into the cells of a peptide (peptide I), observed by confocal microscopy; column A shows the fluorescent peptide and column B shows the cellular nucleic acids stained with propidium iodide;
- FIG. 6 illustrates the inhibition of transfection with peptide I, after preincubation with an excess of peptide I.
- the HeLa cells in plates comprising 24 wells are preincubated with peptide I for one hour at 4 ° C. at concentrations of 10 to 50 ⁇ g / ml, respectively;
- - Figure 7 shows some sequences of adenovirus fibers.
- the HeLa cells are cultured at 37 ° C. in an EMEM medium supplemented with 10% fetal calf serum under an atmosphere containing 5% of CO 2 .
- a luciferase reporter vector (plasmid pGL3, Promega), is used to demonstrate the transfection.
- Peptide IC includes sequence # 2, sequence # 10, sequence # 7, sequence # 16, from the N-terminus to the C-terminus and 10 lysines; this peptide corresponds to the 20 N-terminal residues of the Ad3 fiber.
- Peptide I contains these same 20 N-terminal amino acids of the Ad3 fiber and 20 lysines; the peptides were obtained by solid phase synthesis, followed by purification by HPLC.
- This peptide I is labeled with fluorescein; peptides comprising 10 lysines instead of 20 were also prepared. The integrity of all the peptides is verified by mass spectroscopy.
- plasmid DNA 500 ng of plasmid DNA (pGL3) are preincubated with different quantities of peptides for 5 min at room temperature, then subjected to electrophoresis on 1% agarose gel prepared in TBE buffer.
- 1.5 to 12 ⁇ g of peptide I in 50 ⁇ l of dilution buffer (Tris 20 mM, pH 7.4, 150 mM NaCl) are incubated with 1.5 ⁇ g of plasmid pGL3 in 250 ⁇ l of EMEM medium for 15 to 30 min at room temperature.
- the mixture of DOTAP or DOSPER with 1.5 ⁇ g of plasmid pGL3 is prepared according to the manufacturer's instructions (Boehringer). For studies on the effect of the peptide on transfection in the presence of liposomes, portions of peptides are mixed with DOTAP or DOSPER in the dilution buffer defined above for 15 to 30 min at room temperature, then 1.5 ⁇ g of plasmid pGL3 is added and incubated for 15 min at room temperature.
- the transfections are carried out in plates comprising
- Human erythrocytes are washed 3 times with PBS buffer. 10 6 erythrocytes are incubated with 6 ⁇ g of peptide I for different periods of time at 37 ° C. After centrifugation at 10,000 g for 5 min, the optical density of the supernatant is measured at 540 nm.
- HeLa cells cultured on coverslips (10 5 cells / coverslip) are treated with 3% bovine serum albumin in EMEM for 15 min at 37 ° C.
- the cells are washed twice with PBS buffer, incubated with 40 ⁇ g / ml of peptide I labeled with fluorescein for different durations at 37 ° C., fixed with 2% paraformaldehyde in PBS for 20 min at 37 ° C., washed with PBS and stained with 1 ⁇ g / ml of propidium iodide in PBS for 5 min at room temperature.
- the slides are mounted on a microscope slide with 1,4-diazabicyclooctane (Sigma) and observed on a confocal microscope MRC600 (BioRad). * Results:
- DNA / peptide complexes The behavior of DNA / peptide complexes is analyzed on delayed gels. Theoretically, 526 peptide molecules are necessary to neutralize the phosphate charges carried by the plasmid
- FIG. 3 shows that the incubation with 250 ng of peptide causes a delay in the migration of DNA and the addition of 500 ng of peptide completely stops its migration, which is in agreement with the theoretical considerations set out above. .
- the peptides according to the invention essentially comprise 3 domains, the nuclear localization signal, the hydrophobic domain and the basic polymer.
- NLS domain peptide ID
- polylysine peptide IA
- hydrophobic zone K ⁇ o peptide and K20 peptide
- Table III illustrates other results obtained with peptide I or peptide IA, in the presence of glycerol or PEI and the peptide LU.
- the peptide vector comprising peptide I and PEI
- Liposomes Two liposomes were used, the DOTAP liposome and the DOSPER liposome, both marketed by Boehringer. They consist of cationic lipids with internal ester bonds capable of being degraded by esterases or cellular lipases, which should confer on these liposomes a cytotoxicity lower than that observed with other liposomes.
- the transfection conditions of the HeLa cells were optimized for the liposomes alone (FIG. 4). Transfection with the DOTAP liposome leads to lower efficiencies than those observed with the DOSPER liposome; however, transfections with the DOTAP liposome tend to exhibit a plateau above a certain DNA / liposome ratio, while transfections with the DOSPER liposome exhibit a peak.
- the order in which these compounds are added is important, since a higher efficiency (increase in several factors) is observed, when the liposome is first mixed with the peptide (and not with DNA) then when the plasmid DNA is added after 15 min of incubation at room temperature.
- the DOTAP liposome is mixed with 1.5 ⁇ g of plasmid pGL3 in a DOTAP / DNA ratio of 2 or 4 (v / p), in 300 ⁇ l of dilution buffer for 15 min at room temperature.
- the signal is also observed in the nucleus and a very bright signal is observed in the nucleoli. This significant transfer to nucleoli is particularly surprising.
- peptide I To determine if there are specific sites of attachment of peptide I to the plasma membrane, cells were preincubated with peptide I at 4 ° C. for 2 h, so as to try to saturate the possible sites of attachment of the peptide.
- Light scattering can be used to measure the size of the complexes and their distribution, if there is a mixed population formation. Under these conditions, it is possible to study the effect of the incubation time on the formation of the transfecting complexes. The size is measured immediately after mixing and 1 hour after.
- the complexes produced by mixing the DOTAP liposome with a DNA plasmid have a diameter of approximately 115 nm and their size does not change during incubation.
- the DNA / peptide I complexes are larger and have a diameter of about 350-360 nm.
- the formation of the complex is a dynamic process since a rapid increase in size is observed as a function of the incubation time when more than 90% of the complexes reaches a diameter of 660-1100 nm after 1 h.
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Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000519092A JP2001521747A (ja) | 1997-11-03 | 1998-11-03 | トランスフェクション用ペプチドベクター、それを含む組成物、及びそれらの適用方法 |
| US09/530,560 US6750058B1 (en) | 1997-11-03 | 1998-11-03 | Transfecting peptide vector, composition containing same and applications |
| AU10388/99A AU1038899A (en) | 1997-11-03 | 1998-11-03 | Transfecting peptide vector, composition containing same and applications |
| EP98952838A EP1029070A1 (fr) | 1997-11-03 | 1998-11-03 | Vecteur peptidique de transfection, composition le contenant et leurs applications |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR97/13771 | 1997-11-03 | ||
| FR9713771A FR2770537B1 (fr) | 1997-11-03 | 1997-11-03 | Vecteur peptidique de transfection, composition le contenant et leurs applications |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999023237A1 true WO1999023237A1 (fr) | 1999-05-14 |
Family
ID=9512954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1998/002344 Ceased WO1999023237A1 (fr) | 1997-11-03 | 1998-11-03 | Vecteur peptidique de transfection, composition le contenant et leurs applications |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6750058B1 (fr) |
| EP (1) | EP1029070A1 (fr) |
| JP (1) | JP2001521747A (fr) |
| AU (1) | AU1038899A (fr) |
| FR (1) | FR2770537B1 (fr) |
| WO (1) | WO1999023237A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030104622A1 (en) * | 1999-09-01 | 2003-06-05 | Robbins Paul D. | Identification of peptides that facilitate uptake and cytoplasmic and/or nuclear transport of proteins, DNA and viruses |
| US7915230B2 (en) * | 2005-05-17 | 2011-03-29 | Molecular Transfer, Inc. | Reagents for transfection of eukaryotic cells |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994017832A1 (fr) * | 1993-02-09 | 1994-08-18 | The Scripps Research Institute | Ciblage et transport de genes et d'agents antiviraux dans des cellules par l'adenovirus penton |
| WO1997018317A1 (fr) * | 1995-11-13 | 1997-05-22 | Commissariat A L'energie Atomique | Complexe proteique dodecaedrique adenoviral, composition le contenant et ses applications |
| WO1997020575A1 (fr) * | 1995-12-08 | 1997-06-12 | The University Of Alabama At Birmingham Research Foundation | Vecteurs adenoviraux cibles |
-
1997
- 1997-11-03 FR FR9713771A patent/FR2770537B1/fr not_active Expired - Fee Related
-
1998
- 1998-11-03 JP JP2000519092A patent/JP2001521747A/ja not_active Withdrawn
- 1998-11-03 WO PCT/FR1998/002344 patent/WO1999023237A1/fr not_active Ceased
- 1998-11-03 EP EP98952838A patent/EP1029070A1/fr not_active Withdrawn
- 1998-11-03 AU AU10388/99A patent/AU1038899A/en not_active Abandoned
- 1998-11-03 US US09/530,560 patent/US6750058B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994017832A1 (fr) * | 1993-02-09 | 1994-08-18 | The Scripps Research Institute | Ciblage et transport de genes et d'agents antiviraux dans des cellules par l'adenovirus penton |
| WO1997018317A1 (fr) * | 1995-11-13 | 1997-05-22 | Commissariat A L'energie Atomique | Complexe proteique dodecaedrique adenoviral, composition le contenant et ses applications |
| WO1997020575A1 (fr) * | 1995-12-08 | 1997-06-12 | The University Of Alabama At Birmingham Research Foundation | Vecteurs adenoviraux cibles |
Non-Patent Citations (3)
| Title |
|---|
| CLEVER J ET AL: "Simian virus 40 Vp2/3 small structural proteins harbor their own muclear transport signal", VIROLOGY, vol. 181, no. 1, March 1991 (1991-03-01), pages 78 - 90, XP002097033 * |
| FENDER P ET AL: "Adenovirus dodecahedron, a new vector for human gene transfer", NATURE BIOTECHNOLOGY., vol. 15, January 1997 (1997-01-01), pages 52 - 56, XP002071995 * |
| HONG J S ET AL: "THE AMINO TERMINUS OF THE ADENOVIRUS FIBER PROTEIN ENCODES THE NUCLEAR LOCALIZATION SIGNAL", VIROLOGY, vol. 18, no. 2, December 1991 (1991-12-01), pages 758 - 767, XP000607409 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US6750058B1 (en) | 2004-06-15 |
| JP2001521747A (ja) | 2001-11-13 |
| AU1038899A (en) | 1999-05-24 |
| EP1029070A1 (fr) | 2000-08-23 |
| FR2770537B1 (fr) | 2001-06-01 |
| FR2770537A1 (fr) | 1999-05-07 |
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