摘要:
Two novel cytokines which are involved in an inflammatory response (inflammatory cytokines) are disclosed. The inflammatory cytokines have been isolated from activated peripheral blood, preferably monocytes adhered to plastic; or peripheral blood leukocytes induced with calcium ionophore and mezerin. The two cytokines are Gro .beta. and .gamma., and their cDNA and amino acid sequences are disclosed. The expression of the genes in various cells is presented. Assay and diagnostic utilities using the cytokines; recombinant materials and procedures; purification procedures; and monoclonal antibodies to the cytokines are also shown.
摘要:
Two novel cytokines which are involved in an inflammatory response (inflammatory cytokines) are disclosed. The inflammatory cytokines have been isolated from activated peripheral blood, preferably monocytes adhered to plastic; or peripheral blood leukocytes induced with calcium ionophore and mezerin. The two cytokines are Gro .beta. and .gamma., and their cDNA and amino acid sequences are disclosed. The expression of the genes in various cells is presented. Assay and diagnostic utilities using the cytokines; recombinant materials and procedures; purification procedures; and monoclonal antibodies to the cytokines are also shown.
摘要:
Bifunctional chemicals useful for linking aldehyde containing moieties to moieties containing functionalities which are or can be reactive with sulfhydryl are claimed and have the formula:L--S--(CH.sub.2).sub.n1 --CONH--SPACER--NH--Xwherein L is a leaving group selected from --H or --S--Ar, wherein Ar represents optionally substituted phenyl or pyridyl;n.sub.1 =2-4;X is selected from:--CO--Y--CONHNH.sub.2, a hydrazide; ##STR1## a hydrazine; ##STR2## a hydrazine; --CO--Y--NH--CONHNH.sub.2, a semicarbazide; and--CO--Z--NH--CSNHNH.sub.2, a thiosemicarbazide;wherein Y is alkylene or oxaalkylene and Z is alkylene or a polypeptide residue bridging the N-terminal amino group and C-terminal carboxy group thereof;the SPACER is oxaalkylene or oxaalkylene substituted with hydroxyl and specifically includes residues having formulas selected from--(CH.sub.2).sub.n2 --O--(CH.sub.2).sub.n2 --O--(CH.sub.2).sub.n2 --(a)wherein each n2 is independently 2-4 and ##STR3## wherein n3 is 2-6. Also claimed are hydrazides, semicarbazides, and thiosemicarbazides of .omega.-mercaptocarboxylic acids which lack SPACER diamine.
摘要:
Two novel cytokines which are involved in an inflammatory response (inflammatory cytokines) are disclosed. The inflammatory cytokines have been isolated from activated peripheral blood, preferably monocytes adhered to plastic; or peripheral blood leukocytes induced with calcium ionophore and mezerin. The two cytokines are Gro .beta. and .gamma., and their cDNA and amino acid sequences are disclosed. The expression of the genes in various cells is presented. Assay and diagnostic utilities using the cytokines; recombinant materials and procedures; purification procedures; and monoclonal antibodies to the cytokines are also shown.
摘要:
A macromolecular contrast agent for magnetic resonance imaging of the vascular system is constructed of a polymeric backbone structure with a plurality of spacer arms bonded to the backbone structure, each spacer arm terminating in at least one paramagnetic complex. The polymeric backbone thus serves as an amplifier by supporting a multitude of paramagnetic complexes, and the spacer arms contribute to the molecular weight. The spacer arms further contribute useful properties to the agent, such as hydrophilicity and the ability to cleave at a relatively rapid rate in blood.
摘要:
The present invention is a process for preparing an activated ester of polyethylene glycol or a polyoxyethylated polyol. After the activated ester is prepared, it can be reacted with a protein to form a polymer/protein conjugate. Conjugation with a polymer can reduce the protein's immunogenicity, increase its solubility, and increase its circulating in vivo half-life. Preferred proteins are IL-2, CSFs, and interferons.
摘要:
This invention discloses heterobifunctional coupling agents for making a wide array of molecular conjugates. The agents contain a sterically hindered thiol, linked through a spacer arm to a second group reactive toward nucleophiles such as 1.degree. and 2.degree. amines or reactive thiols that are present on biological and organic materials. The coupling agents are useful for making conjugates containing a sterically hindered linkage.
摘要:
Antibodies exhibit specificity toward single amino acid differences between proteins. These antibodies may be produced by synthesizing a peptide of the appropriate amino acid sequence contained in the protein, immunizing a host with the peptide, and extracting sera from the host to obtain the antibodies. The antibodies and the desired protein are then immunoprecipitated under conditions of partial denaturation to expose the epitope of the protein. The antibodies may be used for diagnostic or therapeutic purposes.
摘要:
Antibodies exhibit specificity toward single amino acid differences between proteins. These antibodies may be produced by synthesizing a peptide of the appropriate amino acid sequence contained in the protein, immunizing a host with the peptide, and extracting sera from the host to obtain the antibodies. The antibodies and the desired protein are then immunoprecipitated under conditions of partial denaturation to expose the epitope of the protein. The antibodies may be used for diagnostic or therapeutic purposes.
摘要:
A pharmaceutical composition is prepared wherein a biologically active conjugated protein which is .beta.-interferon, interleukin-2, or an immunotoxin is dissolved in an aqueous carrier medium without the presence of a solubilizing agent. The unconjugated protein, which is poorly or not at all water-soluble at pH 6-8 without such solubilizing agent, is selectively conjugated to at least one heparin fragment having a terminal 2,5-anhydro-D-mannose residue which has an aldehyde not involved in intramolecular hemiacetal formation.