Abstract:
The invention relates to the treatment of a tumour in a patient, by injecting T lymphocytes depleted of regulatory T lymphocytes, and expressing a molecule enabling the specific destruction thereof, wherein the patient receives, beforehand, a non-myeloablative or myeloablative lymphopenia-inducing treatment.
Abstract:
The present invention relates to compositions and methods for producing an immune response or reaction, as well as to vaccines, kits, processes, cells and uses thereof. This invention more particularly relates to compositions and methods of using a synthetic viral particle to produce, modify or regulate an immune response in a subject. In a more preferred embodiment, the invention is based, generally, on compositions using synthetic viral particles as an adjuvant and/or vehicle to raise an immune response against selected antigen(s) or epitopes, in particular a cellular and/or a humoral immune response.
Abstract:
A vaccine consisting of defective viral particles as obtained in vivo or ex vivo from individuals infected or infectable by a virus, following expression of genes borne by a vector or combination of vectors, and including at least the structural genes required to constitute the viral particle.
Abstract:
Cells, esp. haematopoietic cells, which are trapped with regard to activation, by an antigen (Ag), against which tolerance of the host (animal or human) immune system is sought, contain a genetic sequence (I), the expression product (II) of which, when produced at a high level in the cells, reacts in situ with a pharmaceutically active substance (III) to induce cell destruction. The cell also includes elements, specifically induced by an activation signal provided by Ag, so as to cause high level prodn. of (II). Pref. (I) and the necessary control elements are present on a recombinant DNA fragment specifically, the elements are those which normally control expression of a cytokine (esp. IL-2) or the corresponding receptor. (III) cause, directly or indirectly, interruption of cellular DNA replication.
Abstract:
La présente invention concerne les domaines de la biologie, de la génétique et de la médecine. L'invention décrit des méthodes et compositions permettant (1) l'identification de cellules ou lymphocytes T suppresseurs (Ts) ou leurs précurseurs (pTs) à des fins diagnostiques et thérapeutiques et pour la réalisation d'études génomiques et protéomiques, notamment pour l'identification de nouveaux marqueurs et/ou cibles thérapeutiques pour ces cellules ; (2) la production de cellules ou lymphocytes T suppresseurs (Ts) ou leurs précurseurs (pTs) et/ou leurs manipulations in vivo ou ex vivo pour contrôler des conditions pathologiques variées, incluant des maladies associées à une activité anormale des lymphocytes effecteurs et/ou régulateurs. L'invention concerne la préparation de telles compositions à base de lymphocytes Ts et pTs, et leur utilisation dans le cadre de thérapies cellulaires. Les compositions ou populations cellulaires à base de lymphocytes Ts et pTs obtenues dans le cadre de l'invention sont en particulier adaptées au traitement des tumeurs, des maladies auto immunes, des allergies, de la maladie du greffon contre l'hôte, des effets greffe contre infection (GVI) ou greffe contre leucémie (GVL), des maladies inflammatoires, du diabète de type I, des infections virales, bactériennes ou parasitaires, à la reconstitution immune ou à l'induction d'une tolérance en cas de transplantation de cellules souches, tissus ou organe chez un mammifère.
Abstract:
The invention relates to the fields of biology, genetics and medicine. The invention describes methods and compositions enabling (1) the identification of suppressor T cells or lymphocytes (Ts) or the precursors thereof (pTs) for diagnostic and therapeutical purposes and for carrying out genomic and proteomic studies, i.e. for the identification of new markers and/or therapeutical targets for said cells; (2) the production of of suppressor T cells or lymphocytes (Ts) or the precursors thereof (pTs) and/or the manipulations thereof in vivo or ex vivo for controlling various pathological conditions, including diseases associated with abnormal activity of effector and/or regulator lymphocytes. The invention relates to the preparation of said compositions based on Ts lymphocytes and pTS and to the use thereof in cell therapies. The compositions or cell populations based on the Ts lymphocytes and pTs obtained according to the invention are particularly suitable for the treatment of tumours, auto-immune diseases, allergies, graft-versus-host disease, graft versus infection effects (GVI) or graft-versus-leukemia effects (GVL), inflammatory diseases, type 1 diabetes, viral, bacterial or parasitic infections, for immune reconstruction or induction of tolerance in the event of transplantation of stem cells, tissue or organs in mammals.
Abstract:
Composition for use in the treatment of tumors and the immunization of humans or animals comprising a synergistic association of cells, viruses, or bacteria expressing, transitorily, in organisms at least one gene for producing in vivo one or more immunomodulators, and viruses, or cells producing viruses, said viruses preferably infecting dividing cells of the treated organisms and carrying within their genome at least one gene whose expression in the dividing cells will cause their destruction.
Abstract:
A cell, particularly a hematopoietic cell population wherein the cells are trapped with respect to a given pathogenic virus having a tropism which is specific for said cells. Cells uninfected with the virus, particularly a retrovirus such as HIV, contain a genetic sequence of which the expression product (e.g. HSV1-TK-) may, when its production is increased so that it is present in a sufficient quantity within said trapped cells, react in situ with a pharmaceutically active substance (e.g. acyclovir in the above mentioned example) to induce the destruction of the cells and of means which are specifically induced by a signal provided by the pathogenic virus (e.g. the long terminal repeat of the retrovirus) when it enters the cells, to cause the aforesaid increased production. The use of said pharmaceutically active substance to produce active drugs preventing infection by said virus, is also described.
Abstract:
The present invention relates to novel therapies for treating autoimmune and inflammatory diseases. More specifically, the present invention relates to a use of low dose interleukin-2 for the treatment of type I diabetes and other autoimmune and/or inflammatory diseases.
Abstract:
The invention relates to the use of allogenic T lymphocytes for the preparation of a composition intended to be injected into a recipient patient as conditioning for a hematopoietic stem cell transplant, said allogenic T lymphocytes expressing a molecule enabling the specific destruction thereof.