title: A 22 kDa human growth hormone specific enzyme-linked immunosorbent assay.
abstract: A specific sandwich enzyme-linked immunosorbent assay (ELISA) was developed for human growth hormone (hGH) with molecular weight of 22 kDa (22k hGH). To prepare the 22k hGH specific antibody, a peptide (P-15) corresponding to residues 32-46 in 22k hGH was synthesized and used to immunize rabbits, because a 20k hGH variant was known to lack this peptide sequence. The assay method was developed using a combination of an anti P-15 polyclonal antibody (YK-2) coated on the microtiter well as a catching antibody and another polyclonal antibody against 22k hGH as a peroxidase-conjugated detecting antibody. The assay sensitivity was 1 ng/ml for 22k hGH, and cross-reactivity with other pituitary protein hormones as well as the 20k hGH variant was less than 0.01%, respectively. Furthermore, the 22k hGH content was measured precisely even in the presence of 20k hGH in this ELISA system.
authors.affiliation: Biochemistry Research Laboratories, JCR Pharmaceuticals Co., Ltd., Kobe, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Yuki
authors.forename: K
authors.initials: K
authors.lastname: Kato
mesh_terms: D000595:Amino Acid Sequence; D004797:Enzyme-Linked Immunosorbent Assay; D013006:Growth Hormone / Q000032:analysis* / Q000276:immunology; D006801:Humans; D008969:Molecular Sequence Data; D008970:Molecular Weight; D012680:Sensitivity and Specificity
chemical_list: D013006:Growth Hormone