摘要:
The invention relates to the use of activated T lymphocytes at a dosage effective in transferring cell mediated imunity against AIDS virus infected cells in vivo, in which: (a) the activated T lymphocytes are specific for an epitope of the AIDS virus and histocompatible with the patient; and (b) the activated T lymphocytes are capable of mediating AIDS virus specific T cell immunity as measured by either of the following assays: (i) a cytotoxicity assay in which the activated T lymphocytes are incubated with the patient's radiolabelled target cells infected with AIDS virus, the release of radiolabel being an indication of lysis of the infected target cells; and (ii) a stimulation assay which measures the ability of the activated T lymphocytes to proliferate and/or produce a lymphokine in response to stimulation with an epitope of the AIDS virus in vitro for preparing a pharmaceutical composition for the treatment of AIDS.
摘要:
La présente invention concerne un nouvel anticorps monoclonal qui se lie fortement à un antigène protéïnique associé aux tumeurs humaines, y compris le cancer du colon et du poumon. L'anticorps se lie aux cellules normales de l'homme bien moins fortement qu'aux cellules de la tumeur. L'anticorps trouve son utilité à la fois au niveau des méthodes de diagnostic comme c'est le cas de la détection des cellules malignes associées aux tumeurs, et au niveau de méthodes thérapeutiques pour le traitement des tumeurs humaines. Est également présenté un nouvel antigène glycoprotéïque dalton 66000 trouvé à la surface de la cellule des cellules tumorales chez l'homme. Le terminal amino de la séquence d'acides aminés de cet antigène est (I), où X représente un acide aminé non identifié.
摘要:
An antigenic composition purified from normal human serum or the culture medium of human non-small cell lung carcinoma cells comprising a non-denatured glycosylated Form I L3 protein, said protein having the following N-terminal amino acid sequence : a molecular weight of about 94,000 daltons as determined by SDS polyacrylamide gel electrophoresis under reducing conditions, and N-linked glycoside residues in which the terminal residues of the N-linked glycoside residues are sialic acid residues.
摘要:
cDNA clones coding for TGF-S2 which are used to construct expression vectors capable of directing the high-level expression of mature, biologically active TGF-β2, as well as precursor TGF-β2 forms, in transfected Chinese Hamster Ovary cells (CHO cells) and transfeced COS cells are described. CHO and COS transfectants secreting TGF-β2 at high levels are also described. CHO cells transfected with a plasmid vector carrying the complete 414 amino acid simian TGF-β2 precursor secrete approximately 5 µg per ml culture media.
摘要:
The present invention relates to a chimeric transforming growth factor-β1/β2 comprising the amino acid sequence substantially as depicted in FIG. 1 from about amino acid number 279 to about amino acid residue number 390, and to the production by recombinant DNA methods.
摘要:
The use of TGF-β to inhibit HIV infection and/or replication is described. Both mature and precursor forms of TGF-β are efficacious in inhibiting production of HIV. The TGF-β used to inhibit HIV may be obtained from natural sources or may be produced by recombinant DNA or chemical synthetic techniques. TGF-β1 and/or TGF-β2 may be used. Additionally, hybrid TGF-β1/β2 molecules may also be utilized.
摘要:
Methods are provided for inhibiting growth of cells, particularly epidermal cells. A means for inhibiting proliferation due to stimulation by mitogens, including cytokines such as interleukin I (IL-1) is also provided as is a means for inhibiting or suppressing the functionability of infiltrating immune cells producing cytokines. The method may be used as a treatment for hyperplastic dermatological disorders such as psoriasis.
摘要:
Type III TGF-β receptor is identified in and purified from normal human embryonic palatal mesenchyme (HEPM) cells and the purified product characterized structurally and functionally. HEPM cells were found to express high levels of the type III TGF-β receptor and were found to significantly down-regulate two classes of TGF-β receptor binding site. Purification of the type III TGF-β receptor from solubilized HEPM cell membranes by affinity chromatography yielded a biologically active protein of about 205 kd which specifically binds both the recombinant and natural forms of TGF-β1 and TGF-β2, with affinity dissociation constants in the picomolar range.
摘要:
The present invention relates to novel antibody heteroconjugates and their use in the enhancement or inhibition of T or B lymphocytes. The heteroconjugate are comprised of at least two molecules cross-linked to each other, each antibody being reactive with a different cell surface antigen on the same cell. The heteroconjugates appear to act by binding to lymphocytes via the interaction of the antibodies of the heteroconjugate with their respective cell surface antigens and bringing those antigens into physical proximity to each other, resulting in enhanced or reduced activation and function of the lymphocytes. The heteroconjugates, methods and compositions of this invention are therefore useful in the regulation of lymphocyte function, resulting in the improvement of cellular immune responses in various disease states.