| 摘要 |
Polypeptides comprising amino acid sequences of particulate antigens isolated from various species of Leishmania protozoa, or immunogenic variants thereof, are disclosed for the treatment and clinical remission of cutaneous leishmaniasis, psoriasis, psoriatic arthritis, rheumatoid arthritis, atopic dermatitis, seborrheic dermatitis and skin papilloma. Also disclosed are nucleic acid sequences encoding such polypeptides, vectors incorporating such nucleic acid sequences, methods for genetically engineering microbial host cells to produce such polypeptides, and such recombinant microbial host cells. The polypeptides induced a TH1 cellular immune response, a positive intradermic reaction, and a blastogenic response in peripheral blood lymphocytes after clinical remission of lesions. Populations of peripheral blood lymphocytes that are altered in psoriasis and psoriatic arthritis patients returned to normal values in patients who received the polypeptides and experienced clinical remission of lesions after treatment. |
| 主权项 |
1. An immunotherapeutic agent, consisting All 114 peptides sequences and corresponding proteins as listed in Table 3 capable of eliciting an immune response to result in abatement of the clinical symptoms and signs of cutaneous leishmaniasis, psoriasis, psoriatic arthritis, rheumatoid arthritis, atopic dermatitis, seborrheic dermatitis and skin papilloma said agent comprising a purified protein extract wherein said purified extract is isolated by diethylaminoethyl Sephadex chromatography of a Nonidet P-40 insoluble particulate antigen fraction derived from isolated killed cells of amastigotes from at least one species of the Leishmania genus, said particulate antigen fraction solubilized with 8 M urea and 0.025 M. Tris[hydroxymethyl]-aminomethane pH 8.3 applied to diethylaminoethyl Sephadex and eluted with a solution comprising 0.1 M. sodium chloride, 8 M urea and 0.025 M. Tris[hydroxymethyl]aminomethane pH 8.3, said purified protein extract including polypeptides having apparent molecular weights after total reduction and alkylation of 50 to 70 kDa. |
