Abstract: The invention relates to multi-epitopic peptide compounds obtained from PSA, HwB and LmLRAB proteins of Leishmania as well as to pharmaceutical compositions and vaccines for use against one or more leishmaniases.

Abstract: The invention relates to multi-epitopic peptide compounds obtained from PSA, HwB and LmLRAB proteins of Leishmania as well as to pharmaceutical compositions and vaccines for use against one or more leishmaniases.

Abstract: The present invention relates to methods and compositions for preventing, treating and diagnosing infection by trypanosomes. The invention also relates to the use of excreted/secreted antigens (exoantigens, secretome) and specifically to the identification of a protein excreted/secreted by the trypanosomes, the inhibition of which makes it possible to provide effective protection, mainly by vaccination, against infection by trypanosomes or the development or spread thereof. The invention relates to use of the protein, the derivatives thereof, a nucleotide sequence derived from said protein, or an extract enriched with said protein, and to the use of antibodies directed against said trypanosomes for immunotherapy, diagnosis, and monitoring of infections by trypanosomes.

Abstract: The present invention relates to methods and compositions for preventing, treating and diagnosing infection by trypanosomes. The invention also relates to the use of excreted/secreted antigens (exoantigens, secretome) and specifically to the identification of a protein excreted/secreted by the trypanosomes, the inhibition of which makes it possible to provide effective protection, mainly by vaccination, against infection by trypanosomes or the development or spread thereof. The invention relates to use of the protein, the derivatives thereof, a nucleotide sequence derived from said protein, or an extract enriched with said protein, and to the use of antibodies directed against said trypanosomes for immunotherapy, diagnosis, and monitoring of infections by trypanosomes.

Abstract: The invention provides a composition for the inoculation in a plant of agrobacteria transfected by expression vectors, in order to produce in said plant a protein of interest or a derivative of said protein, by deletion or by mutation, characterized in that it comprises agrobacteria transfected by at least one expression vector, comprising a nucleotide sequence insert that codes for said protein or a derivative of said protein, and agrobacteria transfected by a plurality of expression vectors, each comprising at least one nucleotide sequence insert that codes for proteins having a silencing suppressor effect.

Abstract: The invention relates to nucleic acid constructions, characterized in that they comprise nucleic acids which are isolated in the sense position and which are capable of coding for an immunogenic protein of promastigotes or amastigotes of Leishmania, said nucleic acids responding to one of the sequences SEQ ID NO:1, SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:4, SEQ ID NO:5 et SEQ ID NO:11 and coding for a protein respectively exhibiting a sequence SEQ ID NO:6, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, SEQ ID NO:10 et SEQ ID NO:12. The invention can be used for over-expression of the genes of Leishmania coding for an excretion/secretion antigen.

Abstract: The invention relates to nucleic acid constructions, characterized in that they comprise nucleic acids which are isolated in the sense position and which are capable of coding for an immunogenic protein of promastigotes or amastigotes of Leishmania, said nucleic acids responding to one of the sequences SEQ ID No. 1, SEQ ID No. 2, SEQ ID No. 3, SEQ ID No. 4, SEQ ID No. 5 et SEQ ID No. 11 and coding for a protein respectively exhibiting a sequence SEQ ID No. 6, SEQ ID No. 7, SEQ ID No. 8, SEQ ID No. 9, SEQ ID No. 10 et SEQ ID No. 12. The invention can be used for over-expression of the genes of Leishmania coding for an excretion/secretion antigen.

Abstract: The invention provides a composition for the inoculation in a plant of agrobacteria transfected by expression vectors, in order to produce in said plant a protein of interest or a derivative of said protein, by deletion or by mutation, characterised in that it comprises agrobacteria transfected by at least one expression vector, comprising a nucleotide sequence insert that codes for said protein or a derivative of said protein, and agrobacteria transfected by a plurality of expression vectors, each comprising at least one nucleotide sequence insert that codes for proteins having a silencing suppressor effect.

Abstract: The invention relates to an expression vector of a gene coding for an antigenic protein of Leishmania promastigote, characterized in that it comprises a PSA gene insert in opposite orientation. The invention can be applied to the development of mutants under-expressing, or no longer expressing, genes coding for an antigenic protein of Leishmania promastigote, and to the therapeutic and/or vaccine-oriented uses thereof.

Abstract: The invention relates to an expression vector of a gene coding for an antigenic protein of Leishmania promastigote, characterised in that it comprises a PSA gene insert in opposite orientation. The invention can be applied to the development of mutants under-expressing, or no longer expressing, genes coding for an antigenic protein of Leishmania promastigote, and to the therapeutic and/or vaccine-oriented uses thereof.

Abstract: Taught herein are therapeutic pharmaceutical compositions (vaccines) and methods for preventing or treating leishmaniasis and infections mediated by intracellular pathogenic micro-organism in mammals and in particular in humans, members of the dog, cat and horse family. The pharmaceutical compositions comprise composition of matter produced by from Leishmania sp. amastigotes and/or promastigotes in a specific germ-free and serum-free medium, and particularly excreted-secreted proteins of Leishmania sp. amastigotes and/or promastigotes.

Abstract: The invention relates to a transitory expression system of recombinant proteins in a plant, characterized in that it comprises a viral expression vector comprising a ubiquitous constitutive promoter upstream from a gene of interest or a reporter gene placed downstream from the viral vector or a gene that is adapted for expression of eucaryotic genes or a construction that comprises a gene of interest placed downstream from a constitutive promoter, wherein said constructions are complemented by a construction which also comprises the gene P1 which is placed downstream from the ubiquitous constitutive promoter and which suppresses the silencing of the virus of the yellow variegation of rice (RYMV, Rice Yellow Mottle Virus). Application: production of proteins of therapeutic interest.

Abstract: The invention relates to nucleic acid constructions, characterized in that they comprise nucleic acids which are isolated in the sense position and which are capable of coding for an immunogenic protein of promastigotes or amastigotes of Leishmania, said nucleic acids responding to one of the sequences SEQ ID No. 1, SEQ ID No. 2, SEQ ID No. 3, SEQ ID No. 4, SEQ ID No. 5 et SEQ ID No. 11 and coding for a protein respectively exhibiting a sequence SEQ ID No. 6, SEQ ID No. 7, SEQ ID No. 8, SEQ ID No. 9, SEQ ID No. 10 et SEQ ID No. 12. The invention can be used for over-expression of the genes of Leishmania coding for an excretion/secretion antigen.

Abstract: The process of the invention comprises the implementation of axenic conditions, with use of a liquid single-phase culture medium. For obtaining the amastigote forms, this medium is buffered at a pH of 5.5 to 6.5 and has an osmolarity of at least 400 milliosmoles/kg of liquid, and in particular 400 to 550 milliosmoles/kg of liquid. For obtaining promastigote forms, this medium is buffered at a pH of 7 to 7.5 and has an osmolarity of at least 300 milliosmoles/kg of liquid. This process allows the adaptation and culture in vitro of different stages of tissular parasites, such as leishmanias and T. cruzi or also hematoprotozoa.

Abstract: The present invention provides a method for carrying out in vitro the complete developmental sequence culture of tissular parasites, which includes culturing the parasites in a totally defined culture medium which is an axenic . . . monophasic liquid culture medium, free of serum and free of serum-derived or cell-derived macromolecules, proteins and peptides. For obtaining amastigote forms, this medium is buffered at a pH of 5.5 to 6.5 and has an osmolarity of at least 400 milliosmoles/kg of liquid. For obtaining promastigote forms, the medium is buffered at a pH of 7 to 7.5 and has an osmolarity of at least 300 milliosmoles/kg liquid. Application to the in vitro culture of different stages of tissular parasites such as Leishmania, T. cruzi, and hamatoprotozoa is also provided.

Abstract: The invention concerns immunoglobulins characterized in that they include immunoglobulins of IgG2 classes and corresponding sub-classes, specific of secretion-excretion antigens of the prosmatigote and asmatigote forms of Leishmania sp, capable of lyzing Leishmania sp amastigotes and promastigotes in vitro, and neutralizing their proliferation.

Abstract: A therapeutic vaccine complex for preventing or treating leishmaniases and infections mediated by intracellular pathogenic micro-organism in mammals and in particular in humans, members of the dog, car and horse family. The invention is characterized in that it includes excretion secretion molecules derived from Leishmania sp. Promastigotes produced in a specific germ-free and serum-free medium.

Abstract: The process of the invention comprises the implementation of axenic conditions, with use of a liquid single-phase culture medium. For obtaining the amastigote forms, this medium is buffered at a pH of 5.5 to 6.5 and has an osmolarity of at least 400 milliosmoles/kg of liquid, and in particular 400 to 550 milliosmoles/kg of liquid. For obtaining promastigote forms, this medium is buffered at a pH of 7 to 7.5 and has an osmolarity of at least 300 milliosmoles/kg of liquid. This process allows the adaptation and culture in vitro of different stages of tissular parasites, such as leishmanias and T. cruzi or also hematoprotozoa.

Abstract: The process of the invention comprises the implementation of axenic conditions, with use of a liquid single-phase culture medium. For obtaining the amastigote forms, this medium is buffered at a pH of 5.5 to 6.5 and has an osmolarity of at least 400 milliosmoles/kg of liquid, and in particular 400 to 550 milliosmoles/kg of liquid. For obtaining promastigote forms, this medium is buffered at a pH of 7 to 7.5 and has an osmolarity of at least 300 milliosmoles/kg of liquid. This process allows the adaptation and culture in vitro of different stages of tissular parasites, such as leishmanias and T. cruzi or also hematoprotozoa.

Abstract: The process of the invention comprises the implementation of axenic conditions, with use of a liquid single-phase culture medium. For obtaining the amastigote forms, this medium is buffered at a pH of 5.5 to 6.5 and has an osmolarity of at least 400 milliosmoles/kg of liquid, and in particular 400 to 550 milliosmoles/kg of liquid. For obtaining promastigote forms, this medium is buffered at a pH of 7 to 7.5 and has an osmolarity of at least 300 milliosmoles/kg of liquid. This process allows the adaptation and culture in vitro of different stages of tissular parasites, such as leishmanias and T. cruzi or also hematoprotozoa.