A protein having a polypeptide subunit containing an N-terminal amino acid sequence of Ser-Ala-Ser-Arg-Ala-Leu-Ser-Asp-Lys-Pro-Leu-Ala-His-Val-Val-Ala-Asn-Pro-Gl n-Val-Glu-Gly-Gln-Leu-Gln-Trp-Leu. The protein of the present invention is obtained in substantially pure form at high activity recovery, and is excellent in inducing necrosis of tumors with no toxicity upon the normal tissues of the living body. The protein of the present invention is thermally stable and, therefore, when preparation of pharmaceutical compositions is conducted, the protein of the present invention can be stably formulated into compositions.
Polypeptides, polynucleotide sequences, DNA constructs and compositions are provided for the preparation and use of polypeptides associated with naturally occurring polypeptides found in brains. The small molecular weight polypeptides are growth inhibitors for neoplastic cells without inhibiting normal cells. The polypeptides comprise specific regions which are highly conserved, separated by less conserved regions. The polypeptides find use in inhibiting neoplastic growth and detecting receptors for the polypeptides. Antibodies are provided in conjunction with the polypeptides, which may be used together or separately for detecting the presence of the neoplastic cell retarding polypeptides.
Novel polypeptides, polynucleotide sequences, DNA constructs and compositions are provided for the preparation and use of polypeptides associated with naturally occurring polypeptides found in brains. The small molecular weight polypeptides are growth inhibitors for neoplastic cells without inhibiting normal cells. The polypeptides comprise specific regions which are highly conserved, separated by less conserved regions. The polypeptides find use in inhibiting neoplastic growth and detecting receptors for the polypeptides. Antibodies are provided in conjunction with the polypeptides, which may be used together or separately for detecting the presence of the neoplastic cell retarding polypeptides.
Novel polypeptides, polynucleotide sequences, DNA constructs and compositions are provided for the preparation and use of polypeptides associated with naturally occurring polypeptides found in brains. The low molecular weight polypeptides either are growth inhibitors for neoplastic cells without inhibiting normal cells or affect GABA-ergic transmission. The polypeptides find use in inhibiting neoplastic growth, modulating diazepam receptor response, and detecting receptors for the polypeptides. Antibodies are provided in conjunction with the polypeptides, which may be used together or separately for detecting the presence of the polypeptides.
A novel cloned DNA encoding a rabbit Tumor Necrosis Factor (TNF) or a principal portion thereof, a vector having said DNA inserted thereinto, a host transformed with said vector, a novel polypeptide having or containing the rabbit TNF or a principal portion thereof, and a process for producing said polypeptide comprising cultivating said transformed host.
The present invention provides a novel amphipathic substance having tumor necrosis factor (TNF) inducing activity. This substance is an amphipathic substance obtained by extraction from several kinds of acid-fast bacteria, and has excellent TNF inducing activity. The toxicity of the substance is much lower than that of the conventional amphipathic substances having TNF inducing activity.
