Abstract: The present invention relates to a liposome comprising a saponin, a sterol, a phospholipid and a Toll-like receptor 4 (TLR4) agonist of formula (I), to methods of preparing liposomes, to compositions comprising them and to uses thereof, and to immunogenic compositions comprising such liposomes as adjuvant.

Abstract: The disclosure relates to novel lipidic compounds, method of manufacturing lipid nanoparticles (LNPs) containing thereof, lipid nanoparticles (LNPs) containing thereof, and the use of the LNPs for the delivery of nucleic acid.

Abstract: The disclosure relates to novel lipidic compounds, lipid nanoparticles (LNPs) containing thereof, and the use of the lipidic compounds or the LNPs for the delivery of nucleic acid. The lipidic compounds as disclosed herein comprise at least one terminal radical of formula (I): *—NH—CX—(NH)n-A (I) wherein: —*- represents a single bond linking said radical of formula (I), directly or not, to to one C10 to C55 lipophilic or hydrophobic tail-group; —n is 0 or 1; —X is an oxygen or sulfur atom, and —A represents an optionally substituted 5- or 6-membered unsaturated heterocyclic radical or 5- or 6-membered heteroaromatic ring radical, both containing at least one nitrogen atom; or one of the pharmaceutically acceptable salts of said radical of formula (I); and with said compound that is in all the possible racemic, enantiomeric and diastereoisomeric isomer forms.

Abstract: The invention relates to an immunogenic composition comprising an HCMV gH/gL/UL128/UL130/UL131 pentameric complex antigen and a TH1-inducing adjuvant. It further relates to the immunogenic composition for use as an HCMV vaccine.

Abstract: The present invention provides for novel immunological and vaccine formulations comprising a newly applied non-crosslinked polyacrylic acid polymer adjuvant. The adjuvants may be combined with a wide variety of immunogens to produce vaccines that are safe and effective when administered to a wide range of target animals. The immunogens may include, but are not limited to: inactivated pathogens, attenuated pathogens, subunits, recombinant expression vectors, plasmids or combinations thereof. The animals may include, but are not limited to: humans, murine, canines, felines, equines, porcines, ovines, caprines and bovines.

Abstract: The invention relates to an immunogenic composition comprising an HCMV gB antigen, an HCMV gH/gL/UL128/UL130/UL131 pentameric complex antigen and a Th1-inducing adjuvant. If further relates to the immunogenic composition for use as an HCMV vaccine.

Abstract: The invention relates to an immunogenic composition comprising an HCMV gH/gL/UL128/UL130/UL131 pentameric complex antigen and a TH1-inducing adjuvant. It further relates to the immunogenic composition for use as an HCMV vaccine.

Abstract: The invention relates to an immunogenic composition comprising an HCMV gH/gL/UL128/UL130/UL131 pentameric complex antigen and a TH1-inducing adjuvant. It further relates to the immunogenic composition for use as an HCMV vaccine.

Abstract: The invention relates to an immunogenic composition comprising an HCMV gB antigen, an HCMV gH/gL/UL128/UL130/UL131 pentameric complex antigen and a Th1-inducing adjuvant. If further relates to the immunogenic composition for use as an HCMV vaccine.

Abstract: The present invention provides for novel immunological and vaccine formulations comprising a newly applied non-crosslinked polyacrylic acid polymer adjuvant. The adjuvants may be combined with a wide variety of immunogens to produce vaccines that are safe and effective when administered to a wide range of target animals. The immunogens may include, but are not limited to: inactivated pathogens, attenuated pathogens, subunits, recombinant expression vectors, plasmids or combinations thereof. The animals may include, but are not limited to: humans, murine, canines, felines, equines, porcines, ovines, caprines and bovines.

Abstract: The invention relates to a method of detoxifying a lipopolysaccharide (LPS) or a lipid A from a Gram-negative bacterium, which comprises mixing the LPS or the lipid A with a cationic lipid so as to form a complex in which the LPS or the lipid A is associated with the cationic lipid. According to the conventional preparation modes, the cationic lipid with the co-lipid, if this latter is present, get(s) structured into complexes i.a. liposomes. When preparing lipidic complexes, the addition of LPS or Lipid A leads to an association of this latter with the cationic lipid and as a result, the LPS or lipid A is substantially detoxified. The LPS or lipid A detoxified by the complexes, e.g. when incorporated into liposomes, can be used as vaccinal antigen or as adjuvant.

Abstract: A vaccine composition comprising at least one antigen and one adjuvant, characterized in that the adjuvant comprises sterile-filterable nanoparticles comprising pseudo-boehmite and polyacrylate.

Abstract: The present invention provides compositions comprising a Chlamydial major outer membrane protein (referenced herein as “MOMP”), from at least one Chlamydial serovar and an adjuvant, characterized in that the adjuvant comprises the product E6020 having CAS Number 287180-63-6. The composition may further comprise at least one carrier system (e.g., emulsion, mineral particle). The MOMP protein may be derived from any species of Chlamydia (e.g., C. trachomatis, C. pneumoniae, C. psittaci, or C. trachomatis MoPn). In preferred embodiments, the composition comprises one or more major outer membrane proteins each derived from different serovars of C. trachomatis. The invention also provides methods of inducing an immune response to a Chlamydia species (e.g., C. trachomatis) in a subject, by administering to the subject a composition of the invention.

Abstract: The invention relates to a thermoreversible oil-in-water emulsion comprising: a TLR4 agonist, the chemical structure of which does not comprise a sugar ring, squalene, a nonionic surfactant belonging to the polyoxyethylene alkyl ether chemical group, a hydrophilic surfactant, an aqueous solvent, and which shows immunostimulating properties.

Abstract: The present invention provides compositions comprising a Chlamydial major outer membrane protein (referenced herein as “MOMP”), from at least one Chlamydial serovar and an adjuvant, characterized in that the adjuvant comprises the product E6020 having CAS Number 287180-63-6. The composition may further comprise at least one carrier system (e.g., emulsion, mineral particle). The MOMP protein may be derived from any species of Chlamydia (e.g., C. trachomatis, C. pneumoniae, C. psittaci, or C. trachomatis MoPn). In preferred embodiments, the composition comprises one or more major outer membrane proteins each derived from different serovars of C. trachomatis. The invention also provides methods of inducing an immune response to a Chlamydia species (e.g., C. trachomatis) in a subject, by administering to the subject a composition of the invention.

Abstract: A vaccine composition comprising at least one antigen and one adjuvant, characterized in that the adjuvant comprises sterile-filterable nanoparticles comprising pseudo-boehmite and polyacrylate.

Abstract: The present invention provides compositions comprising a Chlamydial major outer membrane protein (referenced herein as “MOMP”), from at least one Chlamydial serovar and an adjuvant, characterized in that the adjuvant comprises the product E6020 having CAS Number 287180-63-6. The composition may further comprise at least one carrier system (e.g., emulsion, mineral particle). The MOMP protein may be derived from any species of Chlamydia (e.g., C. trachomatis, C. pneumoniae, C. psittaci, or C. trachomatis MoPn). In preferred embodiments, the composition comprises one or more major outer membrane proteins each derived from different serovars of C. trachomatis. The invention also provides methods of inducing an immune response to a Chlamydia species (e.g., C. trachomatis) in a subject, by administering to the subject a composition of the invention.

Abstract: The subject of the invention is a method for adjuvanting LPS of a Gram-negative bacterium, according to which LPS or LPS liposomes (LPS formulated in liposomes) is (are) mixed with the lipidated human-transferrin receptor subunit B (TbpB protein) of Neisseria meningitidis or a lipidated fragment thereof or (ii) LPS and the lipidated TbpB of N. meningitidis or a lipidated fragment thereof are formulated together in liposomes; or (iii) LPS is conjugated with the lipidated TbpB of N. meningitidis or a lipidated fragment thereof in order to obtain a preparation which does not contain OMVs and which is capable of inducing, after administration to a mammal, an anti-LPS immune response which is improved by comparison with the anti-LPS immune response observed after administration of the corresponding preparation in which the lipidated TbpB of N. meningitidis or a lipidated fragment thereof is omitted; as well as vaccine compositions thereof.

Abstract: The subject of the invention is a method for adjuvanting LPS of a Gram-negative bacterium, according to which LPS or LPS liposomes (LPS formulated in liposomes) is (are) mixed with the lipidated human-transferrin receptor subunit B (TbpB protein) of Neisseria meningitidis or a lipidated fragment thereof; or (ii) LPS and the lipidated TbpB of N. meningitidis or a lipidated fragment thereof are formulated together in liposomes; or (iii) LPS is conjugated with the lipidated TbpB of N. meningitidis or a lipidated fragment thereof; in order to obtain a preparation which does not contain OMVs and which is capable of inducing, after administration to a mammal, an anti-LPS immune response which is improved by comparison with the anti-LPS immune response observed after administration of the corresponding preparation in which the lipidated TbpB of N. meningitidis or a lipidated fragment thereof is omitted; as well as vaccine compositions thereof.

Abstract: The invention relates to a vaccine against N. meningitidis infections, comprising (i) an N. meningitidis LOS especially consisting of a lipid A, an inner core, and an L8-type ? chain in which the heptose II residue of the inner core (a) carries a phosphoethanolamine (PEA) substituent in position O-3, and does not carry a PEA substituent in positions O-6 and O-7, or (b) carries a phosphoethanolamine (PEA) substituent in position O-3 and in position O-6 or O-7; and (ii) the lipidated sub-unit B (TbpB) of the receptor of the human transferrine of an N. meningitidis strain or a lipid fragment of said TbpB.