WO2011029980A8 - Composiciones terapéuticas para el tratamiento de enfermedades causadas por hpv - Google Patents
Composiciones terapéuticas para el tratamiento de enfermedades causadas por hpv Download PDFInfo
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- WO2011029980A8 WO2011029980A8 PCT/ES2010/070590 ES2010070590W WO2011029980A8 WO 2011029980 A8 WO2011029980 A8 WO 2011029980A8 ES 2010070590 W ES2010070590 W ES 2010070590W WO 2011029980 A8 WO2011029980 A8 WO 2011029980A8
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Definitions
- the invention relates to therapeutic compositions for the treatment of diseases caused by the human papillomavirus (HPV) and more specifically with compositions comprising at least one HPV E7 derived antigenic peptide.
- HPV human papillomavirus
- Cervical carcinoma is one of the most common cancers in women worldwide, and the fifth most common cancer in general, with an estimated prevalence of 1.4 million cases. There is consistent evidence that chronic infection of the genital tract by various types of human mucosatropic papillomaviruses causes cervical cancer.
- the vaccine for uterine cancer currently used by the American Merck laboratory can protect 95 percent against strains of type 16 and 18 of the virus, which are at the origin of approximately 70 percent of all cases of uterine cancer. It also protects against type 6 and 1 1 strains, which cause warts on genital organs.
- the expression of the oncogenic proteins of HPV E6 and E7 is necessary for the initiation and maintenance of malignant transformation and cellular immunity to E7 that have been associated with the clinical and cytological resolution of HPV-induced lesions.
- the papillomavirus is a DNA virus that infects a wide variety of species. Some of these viruses are associated with the development of diseases in their natural host. More than 60 types of human papillomavirus (HPV) have been identified. These viruses infect the human organism in multiple regions of the body, and are responsible for common skin warts, laryngeal papilloma, etc.
- HPV human papillomavirus
- Genital HPV infections are relatively frequent and the HPV types that most frequently infect the genital tract of men and women are type 6, 11, 16 and 18.
- HPV HPV infects different portions of the genital tract including the cervix.
- Genital HPVs are a clinical problem since infection of the ano-genital region is considered to be the most frequent of communicable sexual diseases.
- HPVs cause genital infection that manifests itself in the following ways:
- Cervix-uterine carcinoma is a common cancer in women. Within this cancer, squamous cell carcinoma is distinguished, which is the most commonly found (about 90% of the cases observed) and adenocarcinoma, which is a cancer of the secretory cells. Cervical cancer has several stages. The precancerous stage is called intraepithelial neoplasia (CIN) that can evolve into invasive forms (carcinomas). Cervical cancer both in its pre-cancerous form and in its invasive form is one of the few cancers that can be diagnosed using a relatively reliable and cheap technique: the Pap test.
- CIN intraepithelial neoplasia
- HPV-16 contains a 7904 bp double stranded DNA genome (Seedorf, K. et al, 1985, Virology 145: 181-185). The capsid is 50 nm in diameter and contains 72 capsomeres (Klug, AJ, 1965, Mol. Biol. 11: 403-423). US 4,777,239 teaches a series of 17 synthetic peptides capable of generating antibodies against HPV-16 being therefore useful for diagnostic purposes.
- HPV encodes two proteins, E6 and E7, which appear to be involved in the pathogenesis of abnormal HPV-induced cell proliferation (see Stoppler et al, 1994, Intervirology, 37: 168-179).
- the amino acid sequences of the E6 and E7 proteins of HPV-16 were defined by Seedorf et al, (Virology, 1985, 145: 181-185).
- E6 and E7 proteins are an effective immunological target for tumor regression.
- DNA-based vaccines encoding said proteins may result in the appearance of irreversible cell transformation events in the patient's cells.
- EP0796273 describes a composition capable of generating an immune response in the patient without generating an unwanted cell transformation, using fusion proteins with mutated and non-mutated segments of the E6 and E7 proteins.
- adenylate cyclase (CyaA) of Bordetella pertussis and the complete E7 protein or different regions thereof.
- CyaA adenylate cyclase
- Adenylate cyclase is able to bind to CD1 lb + dendritic cells by interaction with integrin (MP 2 (CD1 lb / CD18), so some of the fusion proteins are capable of triggering a specific immune response (T helper and cytotoxic T) against tumor cells expressing HPV16 E7
- compositions formed by a recombinant protein comprising CyaA and a truncated form of HPV16 lacking amino acids 30 to 42 (CyaA-E7A30-42), CpG associated with a cationic lipid and cyclophosphamide.
- This composition is capable of generating an immune response against tumors expressing E7.
- the invention relates to a conjugate comprising:
- the invention relates to a polymucleotide or gene construct encoding a conjugate of the invention, with a vector comprising a polymucleotide of the invention or a gene construct of the invention and with a cell containing a polymucleotide of the invention. , a gene construct of the invention or a vector of the invention.
- the invention relates to a first composition comprising, together or separately:
- the invention relates to a second composition comprising, together or separately:
- the invention in another aspect, relates to a pharmaceutical composition or pharmaceutical composition of the invention comprising a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention, a cell of the invention. , a first or second composition of the invention and at least one pharmacologically accepted adjuvant.
- the invention relates to a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention, a cell of the invention, a first or second composition of the invention or a Pharmaceutical composition of the invention for use in medicine.
- the invention relates to the use of a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention, a cell of the invention, a first or second composition of the invention.
- invention or a pharmaceutical composition of the invention for the manufacture of a vaccine in another aspect, relates to the use of a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention, a cell of the invention, a first or second composition of the invention.
- invention or a pharmaceutical composition of the invention for the manufacture of a medicament for the prevention and treatment of an infection caused by human papillomavirus and / or cervical cancer associated with HPV infections.
- the invention relates to an in vitro method or method of the invention, to obtain mature dendritic cells that have at least one HPV E7 antigen comprising:
- the invention relates to cells that are obtained by a method of the invention, or second cells of the invention.
- the invention relates to second cells of the invention for use in medicine.
- the invention relates to the use of second cells of the invention for the manufacture of a medicament for the prevention and treatment of an infection caused by human papillomavirus and / or cervical cancer associated with infections. by HPV.
- FIG. 1 Schematic representation of the EDA-HPVE7 recombinant fusion protein.
- the first 29 amino acids of the E7 protein were arranged in the N-terminus of EDA, while amino acids 43-98 of E7 were inserted into C-terminus of EDA.
- the fusion protein sequence is shown using the one letter code for amino acids.
- the amino acids of the E7 protein are shown in gray, while the EDA amino acids are written in black.
- PAGE-SDS analysis of the EDA-HPVE7 recombinant protein 5 ⁇ g of the purified proteins were separated on a 15% SDS-polyacrylamide gel and stained with Coomasie blue.
- FIG. 2 Activation of the maturation of dendritic cells derived from bone marrow by the fusion protein EDA-HPVE7.
- Bone marrow derived dendritic cells were incubated for 48 hours with EDA-HPVE7 (500 nM), E7 peptide (49-57) (500 nM), LPS (1 ⁇ g / ml) (positive control) or culture medium (negative control ).
- the cells were then collected and the expression of the H-2b molecule or the maturation markers CD54 and CD86 (URF: Relative fluorescence units) were analyzed by flow cytometry.
- FIG. 3 The EDA-HPVE7 fusion protein induces the production of IL-2 by bone marrow derived dendritic cells or the production of TNF- ⁇ by the human monocytic cell line THP-1.
- A Bone marrow derived dendritic cells were incubated for 48 hours with EDA-HPVE7 (500 nM), E7 peptide (49-57) (500 nM), LPS (1 ⁇ g / ml) (positive control) or culture medium (negative control). 24 hours later, the culture supernatant was collected and the IL-12 released to the supernatant was measured by ELISA.
- THP-1 cells were incubated for 15 hours with EDA-HPVE7 (500 nM), E7 peptide (49-57) (500 nM), LPS (1 ⁇ g / ml) or culture medium (negative control). After cultivation, supernatants were collected and TNF- ⁇ released by ELISA was measured.
- FIG. 4 Induction of CTL in vivo by immunization with EDA-HPVE7 protein or with the DTc / E7 peptide (49-57) in PBS.
- A Mice were immunized iv via 2 nmol of EDA-HPVE7 or with the DTc / E7 peptide (49-57). Seven days after immunization, mice were sacrificed and spleen cells were cultured in the presence or absence of DTc peptide for 5 days.
- CTL activity was measured using a conventional chromium release assay using EL4 cells radiolabeled and pulsed with DTc peptide as target cells in splenocyte cultures obtained from mice immunized with the EDA-HPV-E7 protein (black circles) or with the DTc / E7 peptide (49-57) (white circles) (in the plot shows the absolute value, calculated when discounting the value obtained in the presence of peptide, the value obtained in the absence of peptide).
- mice Seven days after immunization, mice were sacrificed and spleen cells were cultured in the presence or absence of DTc / E7 peptide (49-57) for 5 days.
- CTL activity was measured by a conventional chromium release assay using radiolabeled and pulsed EL4 cells with the DTc peptide as target cells (A) or irradiated TC-1 (B) cells, in splenocyte cultures obtained from immunized mice with the protein EDA-HPV-E7 + pI: C (black circles) or with the DTc / E7 peptide (49-57) + pLC (white circles) (the graph shows the absolute value, calculated when discounting the value of lysis in the presence of peptide, the value obtained in the absence of peptide).
- FIG. 6 Therapeutic efficacy of the EDA-HPVE7 fusion protein combined with poly I: C (pI: C). 5 x 10 5 TC-1 cells were injected into mice and 25 days later, when the mean tumor diameters were approximately 8 mm, they were treated intravenously with different combinations of EDA-based vaccine.
- A Tumor size was measured, presented as the average of two perpendicular diameters (millimeters) at regular intervals. The number of tumor-free mice on day 100 is indicated with respect to the total number of animals included and the survival percentage on day 100 for each set of experiments.
- the value of p (*, p ⁇ 0.05) is indicated determined by the likelihood ratio test comparing tumor growth in the group treated with EDA-E7 / pI: C with tumor growth in the group treated with pI: C. Mice were sacrificed when tumor diameters reached 20 mm or when necessary due to the clinical condition of the animals. (B) Survival curves of mice immunized with the indicated immunogens (the value of p (*, p ⁇ 0.05) is indicated). The combined data of two independent experiments are shown.
- Figure 7 Therapeutic efficacy of the EDA-HPVE7 fusion protein in a large tumor model.
- A were injected C57B / L mice 5 ⁇ 10 5 TC-1 cells and 35 days later when tumor diameters media was the about 12-15 mm, mice were left untreated or received 175 mg / kg cyclophosphamide (CP A), specifically in a single administration.
- CP A cyclophosphamide
- PBS or 30 ⁇ g of CpG / DOTAP was injected iv to the control mouse groups.
- mice received 50 ⁇ g of EDA-E7 and 30 ⁇ g of CpG-B / DOTAP iv
- the control group treated with CpG-B / DOTAP received a second dose of cyclophosphamide on day 50 and CpG-B / DOTAP on day 5 1.
- Treated mice received a second vaccination dose, injecting cyclophosphamide on day 50 and EDA-HPVE7 / CpG-B / DOTAP on day 51.
- B Tumor size measurements, represented as the average of two perpendicular diameters (millimeters) at intervals regular. The number of tumor-free mice on day 150 is indicated with respect to the total number of animals included and the survival percentage on day 150 for each set of experiments.
- mice were sacrificed when tumor diameters reached 22 mm or when necessary due to the clinical condition of the animals.
- C Survival curves of mice immunized with the indicated immunogens (the value of p (*, p ⁇ 0.05) is indicated). The combined data of two independent experiments are shown.
- a recombinant protein comprising the fibronectin EDA region and an HPV-E7 E7 protein immunogenic region is capable of inducing in vitro dendritic cell maturation as well as generating potent activity.
- the contacting of the aforementioned fusion protein with bone marrow derived dendritic cells results in the maturation of said cells as deduced from the determination of expression levels. of different markers of dendritic cell maturation.
- the administration of said fusion protein to animal models is capable of generating an immune response mediated by cytotoxic T cells against tumor cells expressing the E7 protein.
- conjugate of the invention comprising:
- the first element of the conjugate is the EDA region of fibronectin or a functionally equivalent variant thereof.
- EDA region or "extra type III” are used interchangeably herein and refer to a region of the fibronectin molecule resulting from the transcription / translation of an exon of the fibronectin gene and showing a specific affinity for the receptors of type toll 4 (TLR4). This domain was originally described by Muro AF et al .; (J. Cell. Biol., 2003, 162: 149-160).
- the EDA region can be derived from fibronectin obtained from different species such as mouse fibronectin (GenBank accession number AAD 12250.1) or rat fibronectin (GenBank accession number AAB40865.1).
- fibronectin is meant a multifunctional glycoprotein of high molecular weight present in blood and in the extracellular matrix of tissues. Fibronectin is a dimer formed by two identical polypeptide chains linked by C-terminal disulfide bonds. Each monomer has an approximate molecular weight of 230-250 kDa. Each monomer contains three types of modules: type I, type II and type III. Each of these modules is made up of two ⁇ antiparallel helices.
- dendritic Functionally equivalent variants are those that show a degree of identity with respect to the fibronectin EDA domain greater than at least 25%, at least 40%, at least 60%, at least 70%), at least 80%>, at least 90 %>, at least 95%>, at least 96%>, at least 97%>, at least 98%> or at least 99%>.
- the degree of identity between two amino acid sequences can be determined by conventional methods, for example, by standard sequence alignment algorithms known in the state of the art, such as, for example, BLAST (Altschul SF et al. Basic local alignment search tool J Mol Biol. 1990 Oct 5; 215 (3): 403-10).
- BLAST Altschul SF et al. Basic local alignment search tool J Mol Biol. 1990 Oct 5; 215 (3): 403-10.
- the person skilled in the art will understand that the amino acid sequences referred to in this description can be chemically modified, for example, by chemical modifications that are physiologically relevant, such as phosphorylations, acetylations, etc.
- the term "functionally equivalent variant”, as used herein, means that the polypeptide or protein in question maintains, at least, one of the functions of the fibronectin EDA region, preferably, at least, a function related to the immune response, in particular, that maintains the ability to interact with TLR4 and promote dendritic cell maturation.
- the ability of the functionally equivalent variant to interact with TLR4 can be determined by the use of conventional methods known to those skilled in the art.
- the binding capacity of the variant of the EDA region of fibronectin to TLR4 can be determined using co-immunoprecipitation experiments, wherein the protein of interest (eg EDA variant) is isolated with a specific antibody and the molecules that interact with the protein (eg TLR4) are subsequently identified by a "western blot". It can also be used a double hybrid test in yeast, or electrophoresis tests under native conditions. The latter methodology is based on the migration of protein complexes in polyacrylamide gels based on their molecular weight.
- the fibronectin EDA region of the conjugate of the invention corresponds to amino acids 1,631 to 1,721 of human fibronectin as it appears in the UniProt database with HUMAN FINC accession number and corresponding to the sequence polypeptide SEQ ID NO : l.
- Component (ii) of the conjugates of the invention is one or more antigenic peptides derived (s) from the HPV E7 protein.
- the E7 protein can come from different HPV serotypes.
- E7 proteins that can be used in the context of the present invention include, without limitation, the E7 protein of human HPV serotype 80 (GenBank: CAA75471.1), E7 of human HPV serotype 68 (GenBank: ACL12352.1), E7 of human HPV serotype 11 (GenBank: ACL 12343), E7 of human HPV serotype 59 (GenBank: ACL12335), E7 of human HPV serotype 33 (GenBank: ACL12327), E7 of human HPV serotype 72 (GenBank: CAA63874), E7 of human HPV serotype 16 (GenBank: ACL12311), E7 of human HPV serotype 13 (GenBank: ABC79058), E7 of human HPV serotype 73 (GenBank: CAA63883)
- antigenic peptide refers to a molecule of a peptide nature comprising one or more epitopes capable of stimulating an organism's immune system to generate a specific humoral or cellular response of the antigen. .
- the antigen generates a state of sensitivity or immune response capacity in said subject so that both antibodies and immune cells obtained from said subject are capable of react specifically with the antigen.
- antigenic peptide derived from HPV E7 protein is understood as a fragment of HPV E7 protein that is capable of stimulating a mammalian immune system so that it is generated an immune response against said protein capable of inhibiting the growth of tumors caused by the expression of E7 or inhibiting the proliferation of HPV.
- the antigen or the antigens can (n) be the complete E7 protein, as well as isolated domains of said protein, peptide fragments of the E7 protein or polyepitopic fusion proteins comprising multiple epitopes (for example from 5 to 100 different epitopes ).
- the polypeptide may optionally include additional segments, for example, it may include at least 4, 5, 10, 15, 20, 25, 30, 40, 50, 60, 75, 90 or even 100 or more segments, each being a part of the naturally occurring E7 protein from a pathogen and / or a naturally occurring tumor antigen that may be the same or different from the protein (s) from which it is derived ) the other segments.
- Each of these segments can be at least 8 amino acids in length, and each contains at least one epitope (preferably two or more) different from the epitopes of the other segments.
- At least one (preferably at least two or three) of the segments in the hybrid polypeptide may contain, for example, 3, 4, 5, 6, 7 or even 10 or more epitopes, particularly MHC class I binding epitopes or Class II Two, three or more of the segments may be contiguous in the hybrid polypeptide, that is, they may be attached end to end, without spacer between them. Alternatively, any two adjacent segments may be linked by a spacer amino acid or a spacer peptide.
- antigenic peptides derived from E7 HPV are found in Table I.
- Example 2 ELISPOT
- EP1334177-B1 an in vitro method for detecting the T-lymphocyte mediated activity of a target antigenic peptide is described.
- the antigenic peptide or peptides / s that are part of the conjugate of the invention are derived from the HPV E7 protein 16.
- the conjugate of the invention comprises an antigenic peptide derived from the HPV E7 protein corresponding to or containing amino acids 1 to 29 of E7 (SEQ ID NO: 51), an antigenic peptide corresponding to or containing the amino acids 43 to 98 of E7 (SEQ ID NO: 52) or both.
- the EDA region is flanked by two E7 HPV antigenic peptides.
- the fusion protein sequence is SEQ ID NO: 53 or SEQ ID NO: 72.
- component ii) forms a single polypeptide chain or fusion protein with component i).
- said fusion protein may contain, if desired, an additional peptide capable of being used for the purpose of isolation or purification of the fusion protein, such as a peptide tag ("tag").
- Said label peptide may be located at any position of the fusion protein that does not alter the functionality of any of the polypeptides (i) and (ii).
- said tag peptide may be located in the N-terminal position of the conjugate of the invention so that the C-terminal end of the tag peptide is attached to the N-terminal end of the conjugate of the invention.
- the tag peptide may be located in the C-terminal position of the conjugate of the invention so that the N-terminal end of the tag peptide is attached to the C-terminal end of the conjugate of the invention.
- Virtually any peptide or peptide sequence that allows the isolation or purification of the fusion protein can be used, for example, polyhistidine sequences, peptide sequences capable of being recognized by antibodies that can be used to purify the resulting fusion protein by immunoaffinity chromatography , such as tag peptides, for example, epitopes derived from the hemagglutinin (HA) of influenza virus (Field et al., 1988, Mol. Cell.
- HA hemagglutinin
- Tag peptides include the Flag peptide (Hopp et al, 1988, BioTechnologv, 6: 1204-1210) and the KT3 epitope (Martin et al, 1993, Science, 255: 192-194).
- the tag peptide is generally disposed at the amino- or carboxy-terminal terminal.
- the different elements of the conjugate of the invention can be placed in any order so that the fibronectin EDA region maintains its dendritic cell activating properties and that the antigenic peptide region (s) HPV E7 derivative maintain antigenic properties.
- the elements that form the conjugates of the invention may be directly conjugated or, alternatively, may contain an additional amino acid sequence that acts as a linker between said components.
- said intermediate amino acid sequence acts as a hinge region between said domains, allowing them to move independently of each other while maintaining the three-dimensional shape of the individual domains.
- a preferred intermediate amino acid sequence according to the invention would be a hinge region characterized by a structural ductility that allows this movement.
- said intermediate amino acid sequence is a flexible linker.
- said flexible linker is a flexible linker peptide with a length of 20 amino acids or less.
- the effect of the linker region is to provide space between the EDA peptide and component (ii). This ensures that the secondary structure of the EDA peptide is not affected by the presence of component (ii) and vice versa.
- the spacer is polypeptide in nature.
- the linker peptide preferably comprises at least two amino acids, at least three amino acids, at least five amino acids, at least ten amino acids, at least 15 amino acids, at least 20 amino acids, at least 30 amino acids, at least 40 amino acids, at least 50 amino acids, at least 60 amino acids, at least 70 amino acids, at least 80 amino acids, at least 90 amino acids or about 100 amino acids.
- the linker peptide comprises 2 or more amino acids selected from the group consisting of glycine, serine, alanine and threonine.
- said flexible linker is a polyglycine linker.
- Possible examples of linker / spacer sequences include SGGTSGSTSGTGST (SEQ ID NO: 54), AGSSTGSSTGPGSTT (SEQ ID NO: 55) or GGSGGAP (SEQ ID NO: 56). These sequences have been used for the binding of coiled helices designed to other protein domains (Muller, K.M., Arndt, K.M. and Alber, T., Meth. Enzimology, 2000, 328: 261-281).
- said linker comprises or consists of the amino acid sequence GGGVEGGG (SEQ ID NO: 57).
- the linker may be attached to the components flanking the two components of the conjugates of the invention by means of covalent bonds and preferably the spacer is essentially non-immunogenic, and / or is not prone to proteolytic cleavage, and / or does not comprise any residue. Cysteine Similarly, the three-dimensional structure of the spacer is preferably linear or substantially linear.
- spacer or linker peptides include those that have been used to bind proteins without substantially impairing the function of the bound proteins or at least without substantially impairing the function of one of the bound proteins. More preferably the spacers or linkers have been used to bind proteins comprising structures with rolled helices.
- the linker may include residues 53-56 of tetranectin, which forms a ⁇ sheet in tetranectin, and residues 57-59 that form a spin in tetranectin (Nielsen, BB et al, FEBS Lett. 412: 388-396 , 1997).
- the segment sequence is GTKVHMK (SEQ ID NO: 58).
- This linker has the advantage that when it is present in the native tetranectin, it is linking the trimerization domain with the CRD domain, and is therefore suitable for connecting the trimerization domain to another domain in general.
- the resulting construction is not expected to be more immunogenic than the construction without a linker.
- a suitable linker peptide may be based on the sequence of 10 amino acid residues of the upper hinge region of the murine IgG3. This peptide (PKPSTPPGSS, SEQ ID NO: 59) has been used for the production of dimerized antibodies by means of a rolled helix (Pack P.
- the two components of the conjugates of the invention may be connected by a peptide whose sequence contains a cut-off target for a protease, thereby allowing separation of the EDA peptide from component (ii).
- Protease cut sites suitable for incorporation into the polypeptides of the invention include enterokinase target site (DDDDK sequence SEQ ID NO: 61), factor Xa target site (IEDGR cut site, SEQ ID NO: 62), site thrombin target (LVPRGS cutting site, SEQ ID NO: 63), TEV protease target site (ENLYFQG cutting site, SEQ ID NO: 64), PreScission protease target site (LEVLFQGP cutting site, SEQ ID NO : 65) and internal and similar target site.
- the conjugates of the invention can be obtained using any method known to a person skilled in the art.
- the EDA peptide can be obtained from cDNA by expression in a heterologous organism such as, for example, Escherichia coli, Sacharomyces cerevisiae, Pichia pastoris.
- component (ii) to the EDA molecule can be carried out in different ways.
- One possibility is the direct conjugation of a functional group to the therapeutically active component in a position that does not interfere with the activity of said component.
- Functional groups as understood in the present invention, refer to a group of specific atoms in a molecule that are responsible for a characteristic chemical reaction of said molecule.
- Examples of functional groups include, without limitation, hydroxy, aldehyde, alkyl, alkenyl, alkynyl, amide, carboxamide, primary, secondary, tertiary and quaternary amines, aminoxy, azide, azo (diimide), benzyl, carbonate, ester, ether, glyoxyl.
- haloalkyl haloformyl, imine, imide, ketone, maleimide, isocyanide, isocyanate, carbonyl, nitrate, nitrite, nitro, nitrous, peroxide, phenyl, phosphino, phosphate, phosphono, pyridyl, sulfide, sulfonyl, sulfinyl, thioester, thiol and groups Oxidized 3,4-dihydroxy phenylalanine (DOPA).
- DOPA Oxidized 3,4-dihydroxy phenylalanine
- Such groups are maleimide or glyoxylyl groups that react specifically with thiol groups in the Apo A molecule and oxidized 3,4-dihydroxy-phenylalanine (DOPA) groups that react with primary amino groups in the EDA molecule and the component (ii).
- DOPA 3,4-dihydroxy-phenylalanine
- Another possibility is to conjugate component (ii) to the EDA molecule by using homo- or heterobifunctional groups.
- the bifunctional group may first be conjugated to the therapeutically active compound and then conjugated to the EDA peptide or, alternatively, it is possible to conjugate the bifunctional group to the EDA peptide and then conjugate it to component (ii).
- conjugates include the conjugates known as ketone-oxime (described in US20050255042) in which the first component of the conjugate comprises an aminoxy group that binds to a ketone group present in a heterobifunctional group which, in turn, binds to an amino group in the second component of the conjugate.
- the agent that is used to conjugate the components (i) and (ii) of the conjugates of the invention can be processed photolytically, chemically, thermally or enzymatically.
- binding agents that can be hydrolyzed by enzymes found in the target cell is of interest, so that the therapeutically active compound is released only inside the cell. Examples of binding agent types that can be processed intracellularly have been described in WO04054622, WO06107617, WO07046893 and WO07112193.
- the component (ii) of the conjugate of the invention is a compound of a peptide nature, including both oligopeptides and peptides
- methods for chemically modifying a polypeptide chain that are widely known to the person skilled in the art can be used. matter and include methods based on conjugation through the thiol groups present in the cistern moieties, methods based on conjugation through the primary amino groups present in the lysine moieties (US6809186), methods based on conjugation to through the N- and C-terminal residues.
- Suitable reagents for the modification of polypeptides to allow their coupling to other compounds include: glutaraldehyde (allows compounds to be attached to the N-terminal end of polypeptides), carbodiimide (allows the compound to be attached to the C-terminal end of a polypeptide), succinimide esters (for example MBS, SMCC) which allows activating the N-terminal end and cistern residues, benzidine (BDB), which allows activating tyrosine residues, periodate, which allows activating carbohydrate residues in those proteins that are glycosylated.
- glutaraldehyde allows compounds to be attached to the N-terminal end of polypeptides
- carbodiimide allows the compound to be attached to the C-terminal end of a polypeptide
- succinimide esters for example MBS, SMCC
- BDB benzidine
- Polynucleotides, gene constructs, vectors and host cells of the invention are Polynucleotides, gene constructs, vectors and host cells of the invention.
- the invention relates to a polynucleotide encoding the conjugate of the invention.
- the person skilled in the art will appreciate that the polynucleotides of the invention will encode only those conjugates in which component (ii) and the EDA polypeptide or its functionally equivalent variant form a single peptide chain, regardless of the relative orientation and regardless of whether both components are directly connected or separated by a spacer region.
- polynucleotide refers to a polymeric form of nucleotides of any length and formed by ribonucleotides and / or deoxyribonucleotides.
- the term includes both single chain and double chain polynucleotides, as well as modified polynucleotides (methylated, protected and the like).
- the invention relates to a gene construct, hereinafter gene construct of the invention, comprising a polynucleotide of the invention.
- the construction comprises the polynucleotide of the invention operably linked to sequences regulating the expression of the polynucleotide of the invention.
- any promoter can be used for the gene constructs of the present invention as long as said promoter is compatible with the cells in which it is desired to express the polynucleotide.
- suitable promoters for the realization of the present invention include, without necessarily being limited, constitutive promoters such as those derived from eukaryotic virus genomes such as polyomavirus, adenovirus, SV40, CMV, avian sarcoma virus, virus hepatitis B, the promoter of the metallothionein gene, the promoter of the thymidine kinase gene of herpes simplex virus, LTR regions of retroviruses, the promoter of the immuno globuin gene, the promoter of the actin gene, the EF-lalpha gene promoter as well as inducible promoters in which protein expression depends on the addition of a molecule or an exogenous signal, such as the tetracycline system, the NFKB / IUZ UV system, the Cre
- tissue-specific promoters include the albumin gene promoter (Miyatake et al., 1997, J. Virol, 71: 5124-32), the central hepatitis virus promoter (Sandig et al, 1996 , Gene Ther., 3: 1002-9); the promoter of the alpha fetoprotein gene (Arbuthnot et al., 1996, Hum.GeneTher., 7: 1503-14), and the promoter of the globulin binding protein gene that binds thyroxine (Wang, L., et al, 1997, Proc.Natl.Acad.Sci.USA 94: 11563-11566).
- the constructs of the invention contain specific dendritic cell promoters such as the CD1 le promoter (Masood, R., et al. 2001. Int J Mol Med 8: 335-343; Somia, NV, et al. 1995. Proc Acad Sci USA 92: 7570-7574), the fascia promoter (Sudowe, S., et al., 2006. J Allergy Clin Immunol. 1 17: 196-203), the CD83 gene promoter, the CD36 gene promoter or the Dectin-2 promoter (Gene Ther., 2001, 8: 1729-1737).
- specific dendritic cell promoters such as the CD1 le promoter (Masood, R., et al. 2001. Int J Mol Med 8: 335-343; Somia, NV, et al. 1995. Proc Acad Sci USA 92: 7570-7574), the fascia promoter (Sudowe, S., et
- the polynucleotides of the invention or the gene constructs that constitute them may be part of a vector.
- the invention relates to a vector comprising a polynucleotide or a gene construct of the invention.
- the person skilled in the art will appreciate that there is no limitation as to the type of vector that can be used since said vector can be a cloning vector suitable for propagation and to obtain polynucleotides or suitable gene constructs or expression vectors in different heterologous organisms suitable for the purification of the conjugates.
- suitable vectors include prokaryotic expression vectors such as pUC18, pUC19, Bluescript and their derivatives, mpl8, mpl9, pBR322, pMB9, CoIEl, pCRl, RP4, phage and shuttle vectors such as pSA3 and pAT28, yeast expression vectors such as 2 micron plasmid type vectors, integration plasmids, YEP vectors, centromeric plasmids and the like, insect cell expression vectors such as pAC series and series vectors pVL, plant expression vectors such as pIBI, pEarleyGate, pAVA, pCAMBIA, pGSA, pGWB, pMDC, pMY, pORE and the like series and expression vectors in upper eukaryotic cells well based on viral vectors (adenovirus, associated viruses to adenoviruses as well as retroviruses and lentiviruses
- the vector of the invention can be used to transform, transfect or infect cells capable of being transformed, transfected or infected by said vector.
- Said cells can be prokaryotic or eukaryotic.
- the vector where said DNA sequence is introduced can be a plasmid or a vector that, when introduced into a host cell, is integrated into the genome of said cell and replicated together with the chromosome (or chromosomes) in which (or in which) it has been integrated.
- the obtaining of said vector can be carried out by conventional methods known to those skilled in the art (Sambrook et al., 2001, "Molecular cloning, a Laboratory Manual", 2nd ed., Cold Spring Harbor Laboratory Press, NY Vol 1-3 a ).
- the invention relates to a cell comprising a polynucleotide, a gene construct or a vector of the invention, for which said cell has been able to be transformed, transfected or infected with a construct or vector provided by it.
- Transformed, transfected or infected cells can be obtained by conventional methods known to those skilled in the art (Sambrok et al., 2001, cited supra).
- said host cell is an animal cell transfected or infected with an appropriate vector.
- Suitable host cells for the expression of the conjugates of the invention include, without limitation, mammalian cells, plants, insects, fungi and bacteria.
- Bacterial cells include, but are not limited to, Gram positive bacteria cells such as species of the genus Bacillus, Streptomyces and Staphylococcus and Gram negative bacteria cells such as cells of the genus Escherichia and Pseudomonas.
- Fungal cells preferably include yeast cells such as Saccharomyces, Pichia pastoris and Hansenula polymorpha.
- Insect cells include, without limitation, Drosophila cells and Sf9 cells.
- Plant cells include, among others, crop plant cells such as cereals, medicinal, ornamental or bulb plants.
- Mammalian cells suitable for the present invention include epithelial cell lines (pigs, etc.), cell lines of osteosarcoma (human, etc.), neuroblastoma cell lines (human, etc.), epithelial carcinomas (human, etc.), glial cells (murine, etc.), liver cell lines (mono, etc.).
- CHO cells (Ch ⁇ nese Hamster Ovary), COS cells, BHK cells, HeLa cells, 91 1, AT 1080, A549, 293 or PER.C6, human ECCs NTERA-2 cells, D3 cells of the mESCs line, human embryonic stem cells such as HS293 and BGV01, SHEF1, SHEF2 and HS181, NIH3T3, 293T, REH and MCF-7 cells and hMSCs cells.
- human embryonic stem cells such as HS293 and BGV01, SHEF1, SHEF2 and HS181, NIH3T3, 293T, REH and MCF-7 cells and hMSCs cells.
- compositions formed by the fusion protein EDA-HPVE7 and polyLC are capable of eradicating tumors that are not treatable when only the fusion protein is administered.
- the invention relates to a composition (hereinafter the first composition of the invention or first composition of the invention) comprising, together or separately:
- the molar concentrations of the components that are part of the first composition of the invention may vary, but preferably include ratios of the two components between 50: 1 and 1: 50, more preferably between 20: 1 and 1: 20, between 1 : 10 and 10: 1, between 5: 1 and 1: 5.
- the first component i) of the composition has been described in detail in the context of the peptide of the invention.
- said first component comprises the fibronectin EDA region of human origin.
- the first component of the composition of the invention comprises amino acids 1 to 29 of the E7 protein and / or amino acids 43 to 98 of the E7 protein.
- the first component of the conjugate that is part of the composition of the invention comprises the EDA region flanked by two HPV E7 antigenic peptides, as described in SEQ ID NO: 53 (further comprising a tail of 6 histidines) or in SEQ ID NO: 72.
- TLR receptor ligand is understood as a molecule that specifically binds to at least one of the TLR receptors (toll like receptor) and which, when bound, is capable of stimulating some of the characteristic co-stimulation signals of the binding of said receptor with its natural ligand or other signals resulting from the union of said receptor with a TLR agonist.
- TLRs Toll-like receptors
- TIL Toll-like receptors
- TLRs TLRs
- 13 types of TLRs have been identified so far (Du X, et al. 2000, Eur.Cytokine Netw. 1 1: 362-71; Chuang TH. Et al, 2000. Eur. Cytokine Netw. 1 1 : 372-378; Tabeta K, et al; 2004, Proc. Nati. Acad. Sci. USA 101: 3516-3521).
- TLR ligands induce various immune responses depending on the cells where the TLR is expressed as well as depending on the origin of the TLR ligand. For example, in the case of ligands of microbial origin, immune cells can produce cytokines that will cause inflammation. In the case of a viral factor, cells may suffer apoptosis. In a particular embodiment, the ligands are agonist ligands.
- the agonist ligands of the TLR receptors are (i) the natural ligands of the TLR receptor itself, or a functionally equivalent variant thereof that retains the ability to bind to the TLR receptor and induce costimulus signals on it, or (ii) an agonist antibody against the TLR receptor, or a functionally equivalent variant thereof capable of specifically binding to the TLR receptor and, more particularly, to the extracellular domain of said receptor, and inducing some of the immune signals controlled by this receptor and associated proteins.
- the specificity of binding can be for the human TLR receptor or for a human homologous TLR receptor of a different species.
- ligands of the different TLRs are schematized in Table 2.
- said assay consists of contacting a culture of dendritic cells with a TLR agonist ligand and measuring the activation of said cells. Said activation can be determined by detecting any labeling, for example poly (LC) in the case where the receiver is TLR3 ,.
- LC poly
- Activated dendritic cells express different proteins such as CD80 (B7.1), CD86 (B7.2) and CD40.
- the TLR ligand is selected from the group of a TLR3 ligand, a TLR9 ligand and a combination of both. More preferably, the TLR3 ligand is poly (LC) (polyinosinic-polycycidylic acid or sodium salt of polyinosinic-polycycidylic acid).
- LC polyinosinic-polycycidylic acid or sodium salt of polyinosinic-polycycidylic acid).
- the TLR9 ligand is an oligonucleotide comprising at least one CpG motif more preferably, the CpG-phosphorothiate type B (CpG 1826: 5'-TCCATGACGTTCCTGACGTT-3 'SEQ ID NO: 66)
- CpG 1826 5'-TCCATGACGTTCCTGACGTT-3 'SEQ ID NO: 66
- the authors of the The present invention has observed that the conjugates of the invention are capable of improving the antitumor response obtained by using a TLR ligand and a chemotherapeutic agent.
- Figure 7 of the invention demonstrates how the administration of a composition comprising the fusion protein EDA-HPVE7, the ligand of TLR9 CpG and cyclophosphamide results in a greater reduction in tumor size than the administration of cyclophosphamide and the ligand. TLR9.
- composition of the invention comprising:
- chemotherapeutic agent any substance that is capable of inhibiting cell proliferation without necessarily killing the cell or that is capable of inducing cell death.
- Agents capable of inhibiting cell proliferation without causing cell death are generically called cytostatic agents, while those that are capable of inducing cell death normally by activating apoptosis are generically called cytotoxic agents.
- Non-limiting examples of chemotherapeutic agents suitable for use in the compositions of the invention include (i) microtubule stabilizing agents such as taxanes, paclitaxel, docetaxel, epothilones and laulimalides, (ii) kinase inhibitors such as Iressa (R), Gleevec , Tarceva TM, (Erlotinib HC1), BAY-43-9006, (iii) specific antibodies to receptors with kinase activity including, without limitation, Trastuzumab (Herceptin (R)), Cetuximab (Erbitux (R)), Bevacizumab (Avastin TM ), Rituximab (ritusan (R)), Pertuzumab (Omnitarg TM); (iv) mTOR pathway inhibitors such as rapamycin and CCI-778; (v) Apo2L / Trail, (vi) anti-angiogenic agents such as endostatin
- chemotherapeutic agents when administered in appropriate doses, can act as immunopotentiating agents indirectly by inactivating regulatory T cells.
- the chemotherapeutic agent is a cytostatic agent, more preferably it is cyclophosphamide or a cyclophosphamide analog.
- Cyclophosphamide analogs are well known in the literature (Cyclophosphamide, Merck Index, 1 I Edition, pages 429-430, document US5190929).
- composition of the invention refers to both the first composition of the invention and the second composition of the invention.
- compositions of the invention can be formulated as a single component or alternatively presented as separate formulations that can be combined for later administration.
- compositions of the invention can also be presented as parts of a kit, wherein each of the components is formulated separately but packaged in a single container.
- the conjugates of the invention are capable of inducing dendritic cell maturation, inducing activation of the antitumor immune response in vivo against the peptide and eradicating large and well established tumors expressing the HPVE7 protein (see examples 1 to 3 of the invention). Therefore, in another aspect, the invention relates to a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention or a composition of the invention for use in medicine.
- the invention in another aspect, relates to a pharmaceutical composition, or pharmaceutical composition of the invention, comprising a fusion protein of the invention, a polynucleotide of the invention, a vector of the invention, a cell of the invention, a composition. of the invention and at least one pharmacologically acceptable adjuvant or vehicle.
- adjuvant is meant any substance that enhances the effectiveness of the pharmaceutical composition of the invention.
- adjuvants include, without limitation, adjuvants formed by aluminum salts (alum), such as aluminum hydroxide, aluminum phosphate, aluminum sulfate, etc., oil-in-water or water-in-oil emulsion formulations such as the adjuvant Complete Freunds (CFA) as well as the incomplete Freunds Adjuvant (IFA); mineral gels; block copolymers, Avridine TM, SEAM62, adjuvants formed by components of the cell wall of bacteria as adjuvants that include liposaccharides (eg lipid A or Lipido A monophosphoryl (MLA), trehalose dimicolate (TDM), and skeletal components of the cell wall (CWS), heat shock proteins or their derivatives, adjuvants derived from ADP-ribosylated bacterial toxins, including diphtheria toxin (DT), pertussis toxin (PT), cholera toxin (CT), E toxins Heat-labile coli (LTl and LT2),
- aureus, EDIM and mutant toxin mutants such as CRM-197, non-toxic mutant toxin from diphtheria; saponins such as ISCOMs (immunostimulatory complexes), chemokine kemokines and cytokines such as interleukins (IL-I IL-2, IL-4, IL-5, I L-6, IL-7, IL-8, IL-12, etc.), interferons (such as interferon gamma) macrophage colony stimulating factor (M-CSF), tumor necrosis factor (TNF), defensins lo 2, RANTES, MIP1 -.alpha, and MEP-2, muramyl peptides such as N-acetyl-murarnyl-L-threonyl-D-isoglutamine (thr-MDP), N-acetyl- normuramyl-L-alanyl-D-isoglutamine (nor-MDP), N-acetyl
- Limosum and synthetic adjuvants such as PCPP, cholera toxin, Salmonella toxin, alum and the like, aluminum hydroxide, N- acetyl-muramyl-L-threonyl-D-isoglutamine (thr-MDP), N-acetyl-nor-muramil-L-alanyl-D-isoglutamine, MTP-PE and RIBI, which contains three components extracted from bacteria, monophosphoryl lipid A , trehalose dimicolate and cell wall skeleton (MPL + TDM + CWS) in a 2% squalene / Tween 80 emulsion.
- Other examples of adjuvants include DDA (dimethyldioctadecylammonium bromide), complete and incomplete Freund and QuilA adjuvants.
- vehicle refers to a diluent or excipient with which the active substance is administered.
- Such pharmaceutical vehicles may be sterile liquids, such as water and oils, including those of petroleum, animal, vegetable or synthetic origin, such as peanut oil, soybean oil, mineral oil, sesame oil and the like.
- water or aqueous solutions of saline solution and aqueous solutions of dextrose and glycerol are used as vehicles, particularly for injectable solutions.
- Suitable pharmaceutical vehicles are described in "Remington's Pharmaceutical Sciences” by E.W. Martin, 1995.
- the vehicles of the invention are approved by the regulatory agency of a state or federal government or are listed in the United States Pharmacopoeia or other pharmacopoeia generally recognized for use in animals, and more particularly in humans .
- the vehicles and auxiliary substances necessary to manufacture the desired pharmaceutical form of administration of the pharmaceutical composition of the invention will depend, among other factors, on the pharmaceutical form of administration chosen.
- Said pharmaceutical forms of administration of the pharmaceutical composition will be manufactured according to conventional methods known to those skilled in the art. A review of different methods of administration of active ingredients, excipients to be used and procedures to produce them can be found in "Pharmacy Treaty Galénica ", C. Faul ⁇ i Trillo, Luzán 5, SA de Ediations, 1993.
- compositions include any solid composition (tablets, pills, capsules, granules, etc.) or liquid (solutions, suspensions or emulsions) for administration oral, topical or parenteral
- pharmaceutical composition may contain as necessary stabilizers, suspensions, preservatives, surfactants and the like.
- the conjugates of the invention may be in the form of prodrug, salt, solvate or clathrate, either in isolation or in combination with additional active agents.
- the combinations of compounds according to the present invention can be formulated together with an excipient that is pharmaceutically acceptable.
- Preferred excipients for use in the present invention include sugars, starches, celluloses, gums and proteins.
- the pharmaceutical composition of the invention will be formulated in a solid dosage pharmaceutical form (for example tablets, capsules, dragees, granules, suppositories, sterile crystalline or amorphous solids that can be reconstituted to provide liquid forms etc.), liquid (for example solutions, suspensions, emulsions, elixirs, lotions, ointments etc.) or semi-solid (gels, ointments, creams and the like).
- a solid dosage pharmaceutical form for example tablets, capsules, dragees, granules, suppositories, sterile crystalline or amorphous solids that can be reconstituted to provide liquid forms etc.
- liquid for example solutions, suspensions, emulsions, elixirs, lotions, ointments etc.
- semi-solid gels, ointments, creams and the like.
- compositions of the invention can be administered by any route, including, but not limited to, oral, intravenous, intramuscular, intrarterial, intramedullary, intrathecal, intraventricular, transdermal, subcutaneous, intraperitoneal, intranasal, enteric, topical, sublingual or rectal.
- routes including, but not limited to, oral, intravenous, intramuscular, intrarterial, intramedullary, intrathecal, intraventricular, transdermal, subcutaneous, intraperitoneal, intranasal, enteric, topical, sublingual or rectal.
- compositions comprising said vehicles can be formulated by conventional procedures known in the state of the art.
- nucleic acids polynucleotides of the invention, vectors or gene constructs
- the invention contemplates pharmaceutical compositions specially prepared for the administration of said nucleic acids.
- the pharmaceutical compositions can comprise said nucleic acids in a naked form, that is, in the absence of compounds that protect nucleic acids from their degradation by the body's nucleases, which entails the advantage that the toxicity associated with the reagents used is eliminated for transfection.
- Suitable routes of administration for naked compounds include intravascular, intratumoral, intracranial, intraperitoneal, intrasplenic, intramuscular, subretinal, subcutaneous, mucosa, topical and oral (Templeton, 2002, DNA Cell Biol, 21: 857-867).
- nucleic acids can be administered as part of liposomes, cholesterol conjugates or conjugates to compounds capable of promoting translocation through cell membranes such as the Tat peptide derived from the HIV-1 TAT protein, the third helix of the homeodomain of Antennapedia protein from D. melanogaster, VP22 protein from herpes simplex virus, arginine oligomers and peptides such as those described in WO07069090 (Lindgren, A. et al., 2000, Trends Pharmacol. Sci, 21: 99-103, Schwarze, SR et al., 2000, Trends Pharmacol.
- the polynucleotide can be administered as part of a plasmid vector or a viral vector, preferably adenovirus-based vectors, in adeno-associated viruses or retroviruses, such as murine leukemia virus (MLV) or lentivirus-based viruses. (HIV, IVF, EIAV).
- MMV murine leukemia virus
- lentivirus-based viruses such as murine leukemia virus (MLV) or lentivirus-based viruses. (HIV, IVF, EIAV).
- compositions of the invention can be administered in doses of less than 10 mg per kilogram of body weight, preferably less than 5, 2, 1, 0.5, 0.1, 0.05, 0.01, 0.005, 0.001, 0.0005, 0.0001, 0.00005 or 0.00001 mg per kg of body weight.
- the unit dose can be administered by injection, by inhalation or by topical administration.
- the dose depends on the severity and response of the condition to be treated and may vary between several days and several months or until it is observed that the condition remits.
- the optimal dosage can be determined by periodic measurements of the Agent concentrations in the patient's organism.
- the optimal dose can be determined from the EC50 values obtained by previous tests in vitro or in vivo in animal models.
- the unit dose can be administered once a day or less than once a day, preferably, less than once every 2, 4, 8 or 30 days. Alternatively, it is possible to administer an initial dose followed by one or several maintenance doses, generally of less quantity than the initial dose.
- the maintenance regimen may involve treating the patient with doses ranging from 0.01 ⁇ g to 1.4 mg / kg body weight per day, for example 10, 1, 0.1, 0.01, 0.001, or 0, 00001 mg per kg body weight per day. Maintenance doses are preferably administered at most once every 5, 10 or 30 days.
- the treatment should be continued for a time that will vary according to the type of alteration suffered by the patient, its severity and the patient's condition. After treatment, the evolution of the patient should be monitored to determine if the dose should be increased in case the disease does not respond to the treatment or the dose is decreased if an improvement in the disease is observed or if unwanted side effects are observed.
- the components of the compositions of the invention can be administered simultaneously, sequentially or separately.
- the chemotherapeutic agent preferably cyclophosphamide
- the remaining components of the compositions of the invention are administered, i.e., conjugate, polynucleotide, construction gene, vector or host cell according to the invention and the TLR ligand.
- Administration of the conjugate, polynucleotide, gene construct, vector or host cell and of the TLR can be carried out simultaneously, separately or sequentially.
- the TLR ligand preferably pLC or CpG-B / DOTAP
- the conjugate, polynucleotide, gene construct, vector or host cell of the invention preferably the fusion protein
- the CPA is used at a suboptimal concentration, called "dose metronomics ", which is capable of selectively killing Treg cells (Ghiringhelli et al., Immunol Cancer. Immunother. 2007, 56: 641-8).
- compositions of the invention can be administered in the form of a single dose, or alternatively, as a first dose and one or more booster doses.
- the compositions of the invention are administered in a first dose and in a second souvenir dose.
- a first dose of the first component of the invention, a second dose of the second component of the invention is administered , a souvenir dose of the first component of the invention, a souvenir dose of the second component of the invention and so on.
- the therapy includes a first administration wherein the chemotherapeutic agent (preferably cyclophosphamide) is administered, a second administration where the conjugate, polynucleotide, gene construct, vector or cell is co-administered. host according to the invention and the TLR ligand; a third administration that includes the chemotherapeutic agent (preferably cyclophosphamide) and a fourth administration where the conjugate, polynucleotide, gene construct, vector or host cell is conjugated together with the TLR ligand (preferably pLC or CpG-B / DOTAP ).
- the TLR ligand preferably pLC or CpG-B / DOTAP
- the TLR ligand preferably pLC or CpG-B / DOTAP
- the conjugate, polynucleotide, gene construct, vector or host cell of the invention preferably the fusion protein
- the TLR ligand preferably pLC or CpG-B / DOTAP
- the conjugate, polynucleotide, gene construct, vector or host cell of the invention preferably the fusion protein
- the daily dose can be administered in a single dose or in two or more doses depending on the particular circumstances. If repeated administration or frequent administrations is desired, it is advisable to implement an administration device such as a pump, a semipermanent catheter (intravenous, intraperitoneal, intracisternal or intracapsular) or a reservoir.
- the invention relates to the use of a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention, a cell of the invention, a composition of the invention or a Pharmaceutical composition of the invention for the manufacture of a vaccine.
- the invention relates to a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention, a cell of the invention, a composition of the invention or pharmaceutical composition of The invention for use as a vaccine.
- the invention relates to a method for vaccination of a subject comprising the administration to said subject of a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention, a cell of the invention, a composition of the invention or a pharmaceutical composition of the invention.
- vaccine an antigen preparation that once inside the body causes an attack response, called an antibody. This response generates immunological memory, producing, in most cases, permanent immunity.
- the vaccine is administered systemically or locally.
- the administration of the vaccine can be carried out by single administration, or with reinforcement by multiple administrations as described above for the administration of the compositions of the invention.
- the invention relates to the use of a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention, a cell of the invention, a composition of the invention or a Pharmaceutical composition of the invention for the manufacture of a medicament for the prevention and treatment of an infection caused by human papillomavirus and / or cervical cancer associated with HPV infections.
- the The invention relates to a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention, a cell of the invention, a composition of the invention or a pharmaceutical composition of the invention for use.
- the invention in the prevention and treatment of an infection caused by human papillomavirus and / or cervical cancer associated with HPV infections.
- the invention relates to a method for the prevention and treatment of an infection caused by the human papillomavirus and / or cervical cancer associated with HPV infections in a subject comprising the administration to said subject of a conjugate of the invention, a polynucleotide of the invention, a gene construct of the invention, a vector of the invention, a cell of the invention, a composition of the invention or a pharmaceutical composition of the invention.
- Infections and diseases caused by the human papillomavirus include warts (such as foot warts), genital warts, recurrent respiratory papillomatosis (such as laryngeal palipomas) and cancers associated with papilloma infections.
- Cancers that have been associated with the papillomavirus include ano-genital cancers (eg cervical, perianal, vulvar, vaginal, penile cancer, etc.), head and neck cancers (eg cancer of the oral-pharyngeal cavity, esophagus, etc. ) and skin cancers (eg, basal cell carcinoma, squamous cell carcinoma).
- dendritic cells trap virus antigens among others and present them to T cells to recruit their help in an initial T cell immune response. This works well against foreign cells entering the body, but cancer cells frequently evade the "own” / "strange” detection system.
- researchers, by modifying dendritic cells, are able to activate a special type autoimmune response that includes a T-cell attack against cancer cells.
- a tumor antigen alone is not enough to generate an immune response, it is possible to contact a dendritic cell immature with a conjugate of the invention, a polynucleotide of the invention, a cell of the invention, a composition of the invention or a pharmaceutical composition of the invention, resulting in the activation of dendritic cells, the uptake of the or antigens derived from HPV E7 and its presentation on the surface associated with the major histocompatibility antigen.
- These cells thus activated can be administered to the patient, so that the presentation of tumor antigens to the patient's immune system occurs, which eventually results in the generation of an immune response mediated by T cells on the patient's cancer cells.
- the invention relates to an in vitro method for obtaining mature dendritic cells that have at least one HPV E7 antigen comprising:
- DC Dendritic cells
- APCs antigen presenting cells
- dendritic cells patrol through blood, peripheral tissues, lymph and secondary lymphoid organs. In peripheral tissues, dendritic cells capture their own and foreign antigens. The captured antigens are processed giving rise to fragments thereof that pass to MHC class I and II molecules (for the activation of CD8 + or CD4 + T cells, respectively). This process of antigen capture, degradation and loading is called antigen presentation. However, in the absence of stimulation, peripheral dendritic cells present the antigens inefficiently. The) exogenous signal (s) from the pathogens or the endogenous signal (s) induces dendritic cells to initiate a development process called maturation, which transforms dendritic cells into APC and in T lymphocyte activators.
- maturation which transforms dendritic cells into APC and in T lymphocyte activators.
- mDC myeloid dendritic cells
- pDC plasmocytic dendritic cells
- Immature dendritic cells are derived from hematopoietic progenitor cells of the bone marrow. These progenitor cells differ in immature cells that have a high endocytic capacity and low ability to activate T cells. These cells have different membrane receptors on their membrane such as TLRs.
- T lymphocytes through independent and dependent CD40 pathways, and endothelial cells, contribute to the final maturation of dendritic cells by direct cell-to-cell contact and by cytokine secretion.
- cytokine secretion Shortly after a warning signal emerges, the efficiency of antigen capture, intracellular transport and degradation, and intracellular traffic of MHC molecules are modified.
- the load of peptides is increased, as well as the half-life and the transfer to the cell surface of the MHC molecules. It also increases the surface expression of co-stimulatory T-cell molecules.
- dendritic cells become the most potent APCs, and the only ones capable of activating non-activated T lymphocytes and initiating the immune response.
- maturation also induces massive migration of dendritic cells outside peripheral tissues. Changes in the expression of chemokine receptors and adhesion molecules, as well as the important changes in the organization of the cytoskeleton, contribute to the migration of dendritic cells through lymph to the secondary lymphatic organs.
- Dendritic cells respond to two types of signals: to the direct recognition of pathogens (by means of receptors with a specific recognition pattern) and to the indirect recognition of infection (by inflammatory cytokines, internal cellular compounds and specific immune responses). In response to these signals, dendritic cells are activated and begin their maturation process, which transforms them into efficient T-cell stimulators.
- One of the most efficient signals for DC maturation is mediated by the interactions of toll-like receptors. (“toll-like receptors”), TLR, (TLRl-9) with their respective ligands (reviewed by Kaisho and Akira, Biochimica et Biophysica Acta, 2002, 1589: 1-13).
- the immature dendritic cells used in the present invention can be primary culture cells.
- the dendritic cells used in the method of the invention can be of autologous or heterologous origin.
- autologous means that the cells come from the same individual.
- heterologous as used herein means that the cells come from a different individual.
- Dendritic cells can be generated in vitro from peripheral blood mononuclear cells (PBMCs) using a protocol that would basically consist of sowing PBMCs cells in a culture bottle so that the adhesion of said cells is allowed. After that, the cells would be treated with interleukin 4 (IL4) and granulocyte-macrophage stimulating factor (GM-CSF) that carries the differentiation of cells to immature dendritic cells (iDCs) in about a week. Optionally, the cells can be matured by treating them with tumor necrosis factor alpha (TNFa). Dendritic cells can be obtained using standard methods from appropriate sources.
- IL4 interleukin 4
- GM-CSF granulocyte-macrophage stimulating factor
- TNFa tumor necrosis factor alpha
- Dendritic cells can be obtained using standard methods from appropriate sources.
- tissue suitable for the isolation of dendritic cells include peripheral blood, spinal cord, cells that infiltrate tumors, cells that infiltrate peritumoral tissues, lymph node biopsies, thymus, spleen, skin, umbilical cord blood, monocytes obtained from blood. peripheral, CD34 or CD14 positive cells obtained from peripheral blood, as well as any other suitable tissue or fluid.
- WO9630030 describes methods to achieve hybridomas of dendritic / tumor cell type cells and pluralities of dendritic cell / tumor cell hybrids. These hybrids and hybridomas are generated by the fusion of tumor cells with dendritic type cells.
- immortal tumor cells of an autologous tumor cell line can be fused with allogeneic dendritic type cells paired with autologous HLA.
- Autologous tumor cell lines can be obtained from primary tumors and their metastases.
- immortal dendritic cells of a dendritic type cell line paired with allogeneic or autologous HLA can be fused with autologous tumor cells.
- WO / 2002/048167 also describes methods for generating stable lines of dendritic cells.
- Another cell line that can be used is CB1 (Paglia P. et al 1993. Journal of Experimental Medicine, Vol 178, 1893-1901).
- a first step of the method of the invention consists in contacting dendritic cells with a conjugate of the invention, a polynucleotide of the invention, a vector of the invention, a gene construct of the invention, a cell of the invention, a composition of the invention or a pharmaceutical composition of the invention under conditions suitable for maturation of dendritic cells to take place.
- the invention contemplates any possible way of contacting dendritic cells with a conjugate of the invention, a polynucleotide of the invention, a vector of the invention, a gene construct of the invention, a cell of the invention, a composition of the invention. or a pharmaceutical composition of the invention.
- the contacting is carried out differently.
- these can be directly added to the culture medium in which the cells are located or can be attached to a surface of plastic, glass etc. It will be exposed to dendritic cells.
- Ways of binding the components of the conjugate of the invention as well as the peptide of the invention to solid surfaces are known to one skilled in the art.
- the techniques used to introduce said components to a cell have been described above in the gene constructs section of the invention.
- the cells of the invention present in their membrane the components of the conjugate of the invention so that they are accessible to dendritic cells.
- suitable conditions for maturation to take place all those culture conditions (oxygen, temperature, humidity, nutrients etc) are understood to allow dendritic cells, after having been in contact with a conjugate of the invention, a polynucleotide of the invention, a vector of the invention, a cell of the invention, a composition of the invention or a pharmaceutical composition of the invention, so that at least one HPV E7 derived antigen has been presented, are activated.
- This activation occurs when immature dendritic cells have phagocytized any of the presented antigens and have degraded said antigens into small pieces by presenting said pieces on their surface using histocompatibility system (MCH) molecules.
- MCH histocompatibility system
- mature dendritic cells upstream membrane receptors that act as co-receptors in the activation of T cells, such as CD80 (B7.1), CD86 (B7.2), and CD40, so that their capacity to activate said T cells is thus increased.
- Mature dendritic cells also regulate the expression of CCR7, a receptor that induces dendritic cells travel throughout the bloodstream to the spleen and from there pass into the lymphatic system. Mature dendritic cells are able to activate T helper cells, killer T cells and B lymphocytes presented the antigens they have processed.
- a mature dendritic cell that has at least one HPV E7 antigen means that dendritic cell that, after capturing an HP7 E7 antigen, is capable of presenting said antigen on the surface of its membranes attached to the major histocompatibility complex (MHC ) after processing it. Additionally, mature dendritic cells may have the membrane receptors indicated above indicated.
- the cells are maintained under conditions suitable for internalization, processing and presentation of one or more peptides derived from the conjugate of the invention.
- the appropriate conditions for the internalization, processing and presentation of the at least one antigenic peptide derived from the conjugate of the invention can be determined using standard assays to determine dendritic cell activation.
- the maturation of DC can be continued using a number of molecular markers and phenotypic alterations of the cell surface. These changes can be analyzed for example using flow cytometry techniques. Typically, maturation markers are labeled using specific antibodies and DCs expressing a marker or a group of markers can be separated from the total DCs using for example FACS cell raffle. Markers of DC maturation include genes that appear expressed at high levels in mature DC cells compared to immature DC cells. These markers include, but are not limited to MHC class II cell surface antigens (in particular HLA-DR), costimulatory molecules such as CD40, CD80, CD86, CD83, cell traffic molecules such as CD45, CD1 le and CD18, etc.
- MHC class II cell surface antigens in particular HLA-DR
- costimulatory molecules such as CD40, CD80, CD86, CD83
- cell traffic molecules such as CD45, CD1 le and CD18, etc.
- the maturation of DCs can be determined by measuring the expression of certain Notch ligands such as the Delta-like ligand (DLL4), Jaggedl and Jagged2 that are associated with the induction of the Thl response.
- DLL4 Delta-like ligand
- Jaggedl Jagged2
- Jagged2 Jagged2
- mature dendritic cells can be identified using their ability to stimulate the proliferation of allogeneic T cells in a leukocyte reaction mista (MLR).
- MLR leukocyte reaction mista
- the presenting function of dendritic cells can be measured using T cell activation assays with MHC-limited, antigen-dependent as well as other assays well known to those skilled in the art such as in vitro stimulation capacity in peripheral blood lymphocytes, by example, determining the amount of IFN- ⁇ produced by CD8 + lymphocytes in the presence of DCs. This determination can be carried out using the technique called ELISPOT.
- the activation of T cells can be further determined by measuring, for example, the induction of cytokine production by stimulated dendritic cells. Stimulation of cytokine production can be determined using a wide variety of standard techniques, such as ELISA, which are well known to a person skilled in the art.
- cytotoxicity assays such as the binding of target cells with tritiated thymidine (3H-TdR) can be used.
- 3H-TdR is incorporated into the nucleus of the cells.
- H-TdR release is a measure of cell death by DNA fragmentation.
- the mature dendritic cells obtained in step (a) are recovered.
- different strategies can be used. For example, one can make use of the membrane markers that mature cells express and have been described above, such as CD80.
- the expression of cell surface markers can be determined, for example, by flow cytometry using conventional methods and apparatus.
- the Becton Dickinson Calibur FACS (fluorescence activated cell separator) system can be used using commercially available antibodies and usual protocols known in the art.
- cells presenting a signal for a specific cell surface marker can be selected in the flow cytometry above the background signal.
- the background signal is defined as the signal strength given by a non-specific antibody of the same isotype as the specific antibody used to detect each surface marker in the conventional FACS analysis.
- the specific signal observed must be more intense than 20%, preferably 30%, 40%>, 50%>, 60%>, 70%>, 80%, 90%, 500 %, 1000%, 5000%, 10000% or higher, than the background signal strength using conventional methods and devices (for example, a Becton Dickinson Calibur FACS system used with commercially available antibodies and usual protocols known in the art) .
- Dendritic cells obtained by the method according to the invention have proven useful for the treatment of diseases that respond to the generation of an immune response against E7 antigens. Using said method, mature cells are obtained and have at least one antigen from the conjugate of the invention.
- the invention relates to dendritic cells presenting antigen and presenting at least one antigen from the conjugate of the invention and which are positive for CD40 obtained by means of the method of the invention or dendritic cells of the invention.
- the invention relates to dendritic cells of the invention, for use in medicine.
- Said dendritic cells of the invention can be used to elicit an immune response in a patient using these as a DC vaccination, that is, by administering said patient with said cells.
- the invention relates to a dendritic cell of the invention for the generation of an immune response in a patient.
- the invention relates to a method for eliciting an immune reaction in a subject that comprises administration to a subject of the antigen presenting cell.
- Vaccination with DC is carried out by administering the antigen presenting DC to a subject (eg a human patient) where an immune response is induced.
- the immune response includes a CTL response against target cells that they are labeled with the antigenic peptides (for example the conjugate components of the invention).
- target cells are typically cancer cells.
- modified DCs are to be administered to a patient, these cells are preferably isolated from precursor cells of the same patient (i.e., that DCs cells are administered to an autologous patient).
- the cells can be administered to allogeneic patients that are compatible with respect to HLA or to allogeneic patients where there is no match. In the latter case, immunosuppressive drugs should be administered to the patient receiving the cells.
- the cells can be administered in any suitable form, preferably with a transporter (for example saline solution). Normally, administration will be intravenous, but intra-articular, intramuscular, intradermal, intraperitoneal or subcutaneous administrations are also acceptable. Administration or immunization can be repeated at different time intervals.
- a transporter for example saline solution.
- administration will be intravenous, but intra-articular, intramuscular, intradermal, intraperitoneal or subcutaneous administrations are also acceptable.
- Administration or immunization can be repeated at different time intervals.
- DC injection can be combined with the administration of cytokines that act in a manner that maintains the number of DCs and their activity as GM CSF, IL-12.
- the dose administered to a patient must be efficient in inducing an immune response that can be detected using assays that measure T cell proliferation, cytotoxicity of T lymphocytes and / or the beneficial therapeutic effect of patient response throughout the weather.
- Vaccines can be administered one or more times to a patient to achieve beneficial results.
- the time between the first and the successive dose (s) of the vaccine depends on a variety of factors, including but not limited to, the patient's health, age, weight, etc.
- the vaccine may be administered at any appropriate time interval, for example including but not limited to, once a week, once every two weeks, once every three weeks, once a month. In a particular embodiment, the vaccine can be administered indefinitely.
- the vaccine is administered three times at two week intervals.
- the doses of the vaccine also depend on a variety of factors, which include but are not limited to the patient's health, stability, age, weight, etc. Once a level of Enough immunity that carries a clinical benefit, booster doses can be used, which are generally administered with a lower frequency (for example monthly or semi-annual).
- the DCs used in the method to elicit an immune response are preferably formulated so that they can be used as an "off-the-shel" drug or ready for use in case there is histocompatibility between the cells of the preparation and the of the treated patient
- the lack of compatibility between the subject of the therapy and the dendritic cells may result in a decrease in the effect of the vaccine, either because premature removal of the cells occurs (especially after multiple administrations) or due to generation of a strong anti-allotypic response that distracts the immune system from the intended target.
- a partial coincidence can be obtained using a vaccine with DCs made with cells that have two or more of the most common HLA-A allotypes (HLA-A2, Al, A19, A3, A9, and A24).
- a total coincidence for most patients can be achieved by providing the doctor with a battery of different DCs from which different possibilities can be selected that have only one allotype in the HLA-A locus.
- the treatment will involve the identification of one or more HLA allotype (s) in the patient using standard tissue-taping methods, and the treatment of patients with DCs that have the HLA or allotypes that match the patient's .
- a patient who is HLA-A2 and HLA-Al 9 can be treated either with homozygous cells for HLA-A2 or for HLA-A19 or with a mixture of both.
- DC cells are divided into two groups: one to generate cells Immature toleragenic and others for general mature DCs for antigen presentation.
- Toleragenic cells are designed to generate acceptance of mature cells.
- the toleragenic cells are to be administered one or more times to the patient so as to generate a sufficient degree of absence of immune response (measured for example in a mixed lymphocyte reaction).
- the mature antigen presenting cells are administered to the subject in the amount and frequency that is necessary for an immune response against the tumor target antigen.
- the antigen presenting dendritic cells of the invention are autologous to the subject to be treated.
- the vaccine composition may include an adjuvant.
- the adjuvant can be any available adjuvant or a combination of these. Examples of adjuvants have been cited in the medical uses section of the conjugates and compositions of the invention.
- the invention relates to the use of dendritic cells of the invention for the manufacture of a medicament for the prevention and treatment of an infection caused by human papillomavirus and / or cervical cancer associated with infections by HPV.
- the invention relates to dendritic cells of the invention for use in the prevention and treatment of an infection caused by human papillomavirus and / or cervical cancer associated with HPV infections.
- the invention relates to a method of treating an infection caused by human papillomavirus and / or cervical cancer associated with HPV infections in a subject comprising administration to said subject of dendritic cells according to the invention.
- mice free of specific pathogens were purchased from Har ⁇ an Laboratories (Barcelona, Spain) and kept in CIMA animal facilities under pathogen-free conditions with water and food at will. Experiments involving animals were performed according to international guidelines for animal care.
- THP1 cells (American Type Culture Collection ATCC, Manassas, VA) were used for in vitro assays of monocyte activation by fusion proteins derived from EDA.
- the cells were maintained in RPMI 1640 with GlutaMAX supplemented with 10% thermo-activated fetal calf serum, 100 units / ml of penicillin, 100 ⁇ g ml streptomycin, 0.4 mg / ml geneticine and 5 x 10 "5 mol / 2-mercaptoethanol 1 (Life Technologies, Cergy-Pontoise, France) 5 x 10 5 TC-1 cells were injected into the affected spine (left side) of C57BL / 6 mice in 200 ⁇ PBS.
- EL-4 tumor cells (mouse thymoma) were obtained from the American Type Culture Collection (LGC Promochem, Molsheim, France) and were used as target cells in cytotoxicity assays ( incubated with or without DTc peptides) and as negative control tumor since they do not express any HPV protein.
- CpG oligodeoxynucleotides were diluted in 50 ⁇ of Optimen medium (Gibco, Grand Island, NY, USA) and mixed with 60 ⁇ g of DOTAP (Roche, Mannheim, Germany) diluted in 100 ⁇ of Optimen.
- Optimen medium Gibco, Grand Island, NY, USA
- DOTAP DOTAP
- the phosphamide cycle (CP A) (Sigma, Steinheim, Germany) was diluted in PBS before injection and was administered 24 hours before vaccination.
- the various antigenic and adjuvant formulations were simultaneously injected. Intravenous administration was performed by retroorbital injection in a volume of 200 ⁇ .
- Plasmid pET20b-EDA which expresses the extra A domain of fibronectin was prepared as described above (Lasarte, Casares et al., 2007) and was used for the construction of the expression plasmid pET20b-EDA-HPVE7 to express a protein of fusion containing the first 1-29 amino acids of the HPV-E7 protein linked to the N-terminus of the EDA protein and amino acids 43-98 of HPV-E7 with the C-terminus of EDA.
- This two-stage expression plasmid was constructed as described below.
- RNA from TC-1 cells was isolated from 1 x 10 7 cells according to the procedures of Chomczynski and Sacchi (Chomczynski and Sacchi, 1987) using Ultraspec (Biotecx, Houston, TX, USA) according to the manufacturer's instructions.
- Total RNA was reverse transcribed and the gene encoding HPV-E7 protein was amplified by PCR as described above (Lasarte, Casares et al, 2007) using the UP-1 upstream primer CATATGCATGGAGATACACCTAC [SEQ ID NO: 68 ] (containing the Ndel restriction site, underlined) and downstream primer DW-1 GCGGCCGCTGGTTTCTGAGAACAGAT [SEQ ID NO: 69] (containing the Notl restriction site).
- PCR reaction used primers UP-1 (SEQ ID NO: 68) and DW-2 (CATATGATTTAATTGCTCATAACA, SEQ ID NO: 70) and plasmid pCR2 .1-TOPO-HPV-E7 as a mold.
- the resulting fragment was subcloned into pCR2.1-TOPO, leading to plasmid pCR2.1-TOPO- (1-29) E7.
- This plasmid was digested with the restriction enzyme Ndel and the resulting fragment was subcloned into the plasmid pET20b-EDA digested with Ndel, leading to plasmid pET20b-EDA- (1-29) E7.
- a PCR reaction was carried out using the UP-2 plasmids (GCGGCCGCAGGACAAGCAGAACCGGA, SEQ ID NO: 71) and DW-1 (SEQ ID NO: 69) and the plasmid pCR2.1-TOPO-HPV- E7 as a mold
- the resulting PCR product was subcloned into pCPv2.1-TOPO, leading to plasmid pCR2.1-TOPO- (43-98) E7, which was digested with Notl to purify the fragment encoding this part of the E7 protein.
- This product was subcloned into plasmid pET20b-EDA- (1-29) E7 previously digested with Notl.
- plasmid pET20b-EDA-HPVE7 was obtained, which was sequenced to confirm the correct expression of the fusion protein (1-29) E7-EDA- (43-98) E7 carrying 6 histidine residues ( 6xHis) at the carboxyl end.
- This plasmid was transfected into BL21 cells (DE3) for expression of the recombinant protein, which was purified from the soluble fraction of cell extracts by affinity chromatography (Histrap, Pharmacia) using an FPLC platform (AKTA, Pharmacia).
- the eluted protein was desalted using Hitrap desalination columns (Pharmacia) and concentrated using an Amicon Ultra 4-5000 MWCO centrifugal filtering device (Millipore Carrighwahill, Ireland).
- the recombinant endotoxin protein was purified using Endotrap columns (Profos Ag, Regensburg, Germany) until the endotoxin levels were below 0.2 EU ⁇ g, assayed by quantitative chromogenic Limulus amebocyte lysate assay (Cambrex, Walkersville, MD, USA).
- the purified recombinant protein was separated by SDS-PAGE and stained with Coomasie blue using the Bio-Safe Coomasie reagent (Bio-Rad, Hercules, CA) according to the manufacturer's instructions ( Figure 1).
- a microcapillary inverse phase CL was performed with a CapLC capillary system (Waters). Inverse phase separation of tryptic digestions was performed with a capillary column of pyrolysis silica Atlantis, C 18, 3 ⁇ , 75 ⁇ x 10 cm Nano Ease (Waters) balanced with 5% acetonitrile and 0.2% formic acid . After injection of 6 ⁇ of sample, the column was washed for 5 min with the same buffer and the peptides were eluted using a linear gradient of 5-50% acetonitrile in 30 min at a constant flow rate of 0.2 ⁇ / min.
- the column was coupled in line with a Q-TOF Micro (Waters) using a PicoTip nanopulverization ionization source (Waters).
- the heated capillary temperature was 80 ° C and the spraying voltage was 1.8-2.2 kV.
- the MS / MS data was collected in an automated mode dependent on the data. The three most intense ions in each scan scan were sequentially fragmented by collision-induced dissociation (CID) using an isolation amplitude of 2.5 and a relative collision energy of 35%.
- CID collision-induced dissociation
- Data processing was performed with Masslynx 4.0.
- PMF-based protein identifications were accepted only when the Masslynx score was at least 7 and the matching peptides represent at least 30% of the proposed protein sequence. Protein identifications from MS / MS data were considered only for score values above 7 and when they were based on the sequence of at least 3 independent peptides.
- THP-1 cells were seeded at 1 x 10 6 cells / well and grown overnight at 37 ° C and 5% C0 2 in complete medium for culture stabilization. Different concentrations of the indicated antigens were added to the cultures and, after 15 hours of incubation, the culture supernatants were collected. The concentration of human TNF- ⁇ released to the medium by the THP-1 cell line was quantified using a commercial ELISA assay (BD-Pharmingen), according to the manufacturer's instructions.
- BD-Pharmingen commercial ELISA assay
- Bone marrow derived dendritic cells were generated from cultures of marrow cells of mouse femur. After lysing red blood cells with ACK lysis buffer, bone marrow cells were washed and lymphocytes and granulocytes were subsequently removed by incubation with a mixture of antibodies against CD4 (GK1, ATCC, Manassas, VA), CD8 (53.6.72; ATCC ), Ly-6G / Grl (BD-Pharmingen; San Diego, CA) and CD45R / B220 (BD-Pharmingen), followed by rabbit complement.
- CD4 GK1, ATCC, Manassas, VA
- CD8 53.6.72
- Ly-6G / Grl BD-Pharmingen
- CD45R / B220 BD-Pharmingen
- the remaining cells were grown at 10 6 cells / ml in 12-well plates in CM (RPMI 1640 supplemented with 10% FCS, 2 mM glutamine, 100 U / ml penicillin, 100 ⁇ g / ml streptomycin and 5 x 2-mercaptoethanol 10 "5 M) supplemented with mGM- CSG 20 ng / ml and mIL-4 20 ng / ml (both from Peprotech;.. London, UK) Every two days, two thirds of the medium were replaced by fresh medium containing cytokines was Non-adherent dendritic cells were collected on day 7 and cultured in the presence or absence of different stimuli at 37 ° C and 5% C0 2.
- the antibodies used were: anti-IApb (clone 25-9-17), anti-H-2Kb (clone AF6-88.5), anti-CD40 (clone 3/23), anti-CD54 (clone 3E2), anti-CD80 (clone 16-10A1), anti-CD86 (clone GL1), anti-CDl le (clone HL-3), all of BD Pharmingen.
- Monolix software http://www.monolix.org/ was used for the analysis of tumor growth data with nonlinear mixed effect models. Mean tumor diameters were adjusted over time using the model described in equation 1.1 and treatments were compared using the probability relationship test.
- yt j is the tumor diameter in mice i at time tj j
- k c, k and yk are the model coefficients expressing, respectively, the initial tumor diameter, tumor growth rate, the intrinsic destructive activity of the effector cells and the elimination rate of the effector cells.
- the fusion protein EDA-HPVE7 is capable of inducing the maturation of dendritic cells derived from bone marrow in vitro It has been described in WO06134190 that the recombinant protein comprising the extra domain A of fibronectin (EDA), an endogenous ligand for the Toll 4-like receptor (TLR4), is capable of binding to and activating the TLR4 signaling path, as described. EDA also stimulated CD production of proinflammatory cytokines such as IL-12 or TNF-alpha, and induced maturation in vitro and in vivo. Therefore, it was tested whether the recombinant protein EDA-HPV-E7 was also capable of inducing BMDC maturation in vitro.
- EDA extra domain A of fibronectin
- TLR4 Toll 4-like receptor
- EDA-HPVE7 fusion protein induces HPVE7 specific CTLs in vivo in the absence of adjuvants It was tested if mice immunized with the EDA-HPVE7 fusion protein developed HPVE7-specific T lymphocyte responses.
- Mice were immunized iv via 2 nmol of EDA-HPVE7 or DTc / E7 peptide (49-57) in PBS. Seven days after immunization, mice were sacrificed and spleen cells were cultured in the presence or absence of DTc peptide for 5 days.
- the number of IFN- ⁇ producing cells cultured in the presence or absence of the E7 peptide (49-57) or in response to irradiated TC1 tumor cells (expressing HPVE7 protein) or EL-4 tumor cells (control) was also measured by ELISPOT negative) in splenocytes from mice immunized with EDA-HPVE7 or with E7 peptide (49-57) ( Figure 4B). It was found that those mice immunized with EDA-HPVE7 had a greater number of IFN- ⁇ producing points specific for E7 (49-57) or TC1 cells, confirming the higher immunogenicity of this protein compared to the cytotoxic T lymphocyte determinant alone .
- EDA-HPVE7 fusion protein induces HPVE7 specific CTLs in vivo in the presence of adjuvants
- mice immunized with the EDA-HPVE7 fusion protein improved responses of HPVE7-specific T lymphocytes in the presence of the TLR3 polyLC ligand (pI: C).
- Mice were immunized iv via 2 nmol of EDA-HPVE7 or DTc / E7 peptide (49-57) in the presence of pI: C (50 ⁇ g / mouse).
- mice were sacrificed and spleen cells were cultured in the presence of DTc / E7 peptide (49-57).
- EDA-HPVE7 As an antigen delivery system and as a vaccine, the therapeutic efficacy of this fusion protein was compared with that of peptide E7 (49-57), both supplemented with the TLR ligand pI: C .
- 5 x 10 5 TC-1 cells were injected into C57BL / 6 mice sc and treated therapeutically 25 days later, when the mean tumor diameters were approximately 8 mm.
- mice were treated iv with the following combinations of EDA vaccines: (i) 2 nmol of EDA-HPVE7 plus 50 ⁇ g of pI: C; (ii) 2 nmol of peptide E7 (49-57) plus 50 ⁇ g of pI: C; (iii) 2 nmol of peptide E7 (49-57) plus 2 nmol of EDA plus 50 ⁇ g of pI: C; (iv) 2 nmol of EDA plus 50 ⁇ g of pI: C; (v) 50 ⁇ g of pI: C alone; (vi) 2 nmol of EDA-HPVE7 alone or (vii) with PBS.
- the therapeutic efficacy of vaccination based on EDA-HPV was also tested in a more difficult situation.
- 5 x 10 5 TC-1 cells were injected into C57BL / 6 mice sc and treated therapeutically 35 days later, when the mean tumor diameters were approximately 12-15 mm.
- EDA-HPVE7 was combined with the treatment of the mice with a low dose of the chemotherapeutic agent phosphamide cycle (CP A, 175 mg / kg).
- mice were immunized with EDA-HPVE7 (2 nmol / mouse) and CpG-B / DOTAP (30 ⁇ g / mouse). Mice immunized with PBS alone or with adjuvants and treatment with CPA alone were used as controls ( Figure 7B). All animals received a second dose of their corresponding treatment on day 50 of the study as indicated in the scheme in Figure 7A.
- the EDA-HPV7 recombinant fusion protein is capable of inducing dendritic cell maturation, inducing the activation of the antitumor immune response in vivo and is capable of eradicating large and well established tumors that express HPVE7 protein .
- the EDA-HPVE7 protein may be considered for the development of an alternative therapy against human cervical carcinoma.
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JP2012528397A JP5964233B2 (ja) | 2009-09-11 | 2010-09-10 | Hpvにより惹起される疾患の治療用組成物 |
EP10768504.2A EP2476440B1 (en) | 2009-09-11 | 2010-09-10 | Therapeutic compositions for the treatment of hpv-induced diseases |
US13/394,610 US20120237535A1 (en) | 2009-09-11 | 2010-09-10 | Therapeutic Compositions For The Treatment of HPV-Induced Diseases |
ES10768504.2T ES2655687T3 (es) | 2009-09-11 | 2010-09-10 | Composiciones terapéuticas para el tratamiento de enfermedades causadas por HPV |
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WO2012123269A1 (en) * | 2011-03-11 | 2012-09-20 | Proyecto De Biomedicina Cima, S.L. | Immunogenic compositions and methods for their use |
WO2016011347A1 (en) * | 2014-07-17 | 2016-01-21 | The Trustees Of The University Of Pennsylvania | Multi-dose injection ready dendritic cell vaccines and combination therapy for cancer |
WO2016146143A1 (en) | 2015-03-16 | 2016-09-22 | Amal Therapeutics Sa | Cell penetrating peptides and complexes comprising the same |
AU2017234192B2 (en) * | 2016-03-16 | 2024-04-04 | Amal Therapeutics Sa | Combination of an immune checkpoint modulator and a complex comprising a cell penetrating peptide, a cargo and a TLR peptide agonist for use in medicine |
KR20230131498A (ko) * | 2016-09-21 | 2023-09-13 | 아말 테라퓨틱스 에스에이 | 암 치료를 위한, 세포 투과 펩타이드, 멀티 에피토프 및 tlr 펩타이드 작용제를 포함하는 융합체 |
JP2021522239A (ja) * | 2018-04-26 | 2021-08-30 | アジェナス インコーポレイテッド | 熱ショックタンパク質結合ペプチド組成物およびその使用方法 |
WO2022053703A1 (en) | 2020-09-14 | 2022-03-17 | Boehringer Ingelheim International Gmbh | Heterologous prime boost vaccine |
WO2022079175A1 (en) | 2020-10-14 | 2022-04-21 | Boehringer Ingelheim International Gmbh | Combination of a sting agonist and a complex comprising a cell penetrating peptide, a cargo and a tlr peptide agonist |
CN112957461B (zh) * | 2021-02-02 | 2023-01-10 | 南开大学 | 一种形貌可控自佐剂宫颈癌多肽疫苗的制备及性能表征方法 |
WO2023174998A1 (en) | 2022-03-16 | 2023-09-21 | Boehringer Ingelheim International Gmbh | Tumor antigens, compounds comprising the tumor antigens kras, tpx2 or aurka and uses thereof |
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US4777239A (en) | 1986-07-10 | 1988-10-11 | The Board Of Trustees Of The Leland Stanford Junior University | Diagnostic peptides of human papilloma virus |
US5190929A (en) | 1988-05-25 | 1993-03-02 | Research Corporation Technologies, Inc. | Cyclophosphamide analogs useful as anti-tumor agents |
AUPN015794A0 (en) | 1994-12-20 | 1995-01-19 | Csl Limited | Variants of human papilloma virus antigens |
DE69634750T2 (de) | 1995-03-31 | 2006-02-23 | Université Libre de Bruxelles | DENDRITENZELLEN/TUMORZELLEN Hybirde ZUR INDUKTION EINER ANTI-TUMOR ANTWORT |
US6809186B1 (en) | 1999-01-22 | 2004-10-26 | Martek Biosciences Corporation | Simple method for labeled conjugate production |
EP1334177B1 (en) | 2000-11-14 | 2005-01-26 | Université Libre de Bruxelles | Generation and use of dendritic cells |
EP1351969A4 (en) | 2000-12-13 | 2006-04-05 | Immunex Corp | PROCESS RELATING TO THE PRODUCTION OF IMMORTAL DENDRITIC CELL LINES |
US8877901B2 (en) | 2002-12-13 | 2014-11-04 | Immunomedics, Inc. | Camptothecin-binding moiety conjugates |
WO2004054622A1 (en) | 2002-12-13 | 2004-07-01 | Immunomedics, Inc. | Immunoconjugates with an intracellularly-cleavable linkage |
AU2004208848A1 (en) * | 2003-02-04 | 2004-08-19 | University Of Connecticut Health Center | Immunogenic acute phase protein-antigenic molecule complexes and fusion proteins |
WO2005051315A2 (en) | 2003-11-24 | 2005-06-09 | The Regents Of The University Of California | On-demand cleavable linkers for radioconjugates for cancer imaging and therapy |
WO2007046893A2 (en) | 2005-10-19 | 2007-04-26 | Ibc Pharmaceuticals, Inc. | Methods for generating bioactive assemblies and uses thereof |
ES2293178T3 (es) * | 2004-03-18 | 2008-03-16 | Institut Pasteur | Proteina recombinante que contiene epitopos del papilomavirus humano insertados en un proteina adenilato ciclasa o un fragmento de la misma y usos terapeuticos de la misma. |
WO2006135436A2 (en) | 2004-10-22 | 2006-12-21 | University Of Florida Research Foundation, Inc. | Inhibition of gene expression and therapeutic uses thereof |
JP5011277B2 (ja) | 2005-04-06 | 2012-08-29 | アイビーシー・ファーマシューティカルズ・インコーポレーテッド | ホモダイマー、ホモテトラマーまたはダイマーのダイマーのからなる安定に連結された複合体を発生させるための方法および使用 |
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WO2007069090A2 (en) | 2005-12-06 | 2007-06-21 | Centre National De La Recherche Scientifique | Cell penetrating peptides for intracellular delivery of molecules |
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