Abstract: The invention concerns vaccines comprising as active principle an immunogen which is a cytokinetic factor or a cell regulating factor particularly transcriptional or another type of factor with immunosuppressive/apoptotic/angiogenic properties abnormally released in the extracellular (stromal) environment by cancer or stromal cells of malignant tumours, and a pharmaceutically acceptable carrier for inducing a systemic or mucosal immune response with secretory formation of class IgC or IgA neutralising antibodies directed against the native factor, or which is derived from such a factor and the use of said immunogen to obtain a medicine for use as anticancer drug.

Abstract: The present invention provides a Tat protein wherein all the cysteine residues of the cysteine-rich domain have been replaced with another amino acid, preferably with serine, nucleic acids encoding it, and methods of using it to elicit a humoral and cellular immune responses in a mammal. The Tat protein of the invention is therefore useful, inter alia, for prophylactic and/or therapeutic anti-HIV use as well as raising anti-native Tat antibodies in mammals.

Abstract: The invention concerns the use of a protein derived from cancer cells, virus-infected cells or immune-defence cells or a fragment of said protein, characterized in that said protein is initially an immunosuppressive and/or angiogenic protein with local activity and said properties are inactivated by at least 70%, through a physical and/or chemical treatment, by genetic recombination or by adjuvant conditioning, said treatment preserving its property of being identified by antibodies directed afainst said protein, and preserving sufficient immunogenic properties for generating antibodies neutralizing or blocking said native protein, to obtain a medicine for use as local anti-immnumosuppression and/or anti-angiogenic agent as an anticancer agent. The invention also concerns the resulting immunogenic compounds, their preparation method and their uses.

Abstract: Cytokines, which are biologically inactive in humans but remain immunogenic, are used in pharmaceutical compositions to promote a neutralizing immune response against native cytokines when administrated to a subject in need thereof to treat homeostatic conditions and disorders associated with an overproduction of cytokines.

Abstract: The invention concerns a viral regulation protein or a viral regulation protein fragment or the alpha interferon or the alpha interferon fragment which is carboxymethylated. The invention also concerns the preparation method and the use of the resulting product in a therapeutic method for treating the human or animal body, a pharmaceutical and vaccine composition containing, as active principle, one at least of the carboxymethylated proteins or fragments.

Abstract: A non-toxic immunogenic compound, which may be administered to humans, is derived from an HIV-1, HIV-2, HTLV-1 or HTLV-2 viral regulatory protein by chemical processing using a coupling agent such as an aldehyde, or from a carrier protein activated by pre-processing using an aldehyde. This compound is capable of being recognized by antibodies to the viral regulatory protein and retains sufficient immunogenic properties to produce antibodies that neutralize or block the native protein, while losing at least 50% of the toxic biological properties of the native protein.