摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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 α 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.
摘要:
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.
摘要:
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. The LPS may, for example, be the LOS of a non-enteric Gram-negative bacterium such as N. meningitidis.
摘要:
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. The LPS may, for example, be the LOS of a non-enteric Gram-negative bacterium such as N. meningitidis.
摘要:
The invention relates to the field of pharmaceutical compositions for use in immunization against HIV-related infections, and concerns a pharmaceutical composition comprising at least an HIV antigen and DCchol. Such a composition has proved to be particularly interesting for inducing through the mucus system IgG and IgA specific to the administered antigen. The inventive pharmaceutical composition, in a particularly advantageous manner, can be in the form of a liposome suspension or emulsion.
摘要:
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.
摘要:
The present invention relates to a pharmaceutical composition comprising at least one vaccine antigen, which also comprises at least one phosphoric ester derivative of phosphatidylcholine having the structure: in which: R1 is a lower alkyl, R2 and R3 are identical or different, and can each represent linear hydrocarbon-based chains having from 13 to 21 carbon atoms.