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NeoBiotechnologies
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Antibody is stable for 24 months.
Positive Control: PC12 cells.Normal prostate or prostate carcinoma tissues. Cellular Localization: Secreted
Specificity Comments: Prostate-specific antigen (PSA) is a single-chain glycoprotein of 237 amino acids containing approximately 8% carbohydrate. It is a serine protease produced almost exclusively by prostatic epithelial cells. Immunohistochemically PSA is expressed in the highly specialized apically-superficial layer of female and male secretory cells of the prostate gland, and is readily demonstrated in adeno carcinomas of the prostate in about 99% of the cases. There is a correlation between malignancy grade and intensity of staining, high grade carcinomas displaying weaker expression. About 1% of poorly differentiated carcinomas have been negative for PSA. Due to the high specificity of PSA for prostatic glandular epithelium, it is very useful in identifying prostatic carcinoma in the prostate and in the adjacent organs often affected by epithelial malignancies, i.e. rectum and urinary bladder. PSA may be used in a panel together with NKX3.1 and Prostein, which are at least as sensitive and slightly more specific than PSA.
PSA is a chymotrypsin-like serine protease (kallikrein family) produced by the prostate epithelium, and is abundant in seminal fluid. PSA can be detected in the sera of patients with prostatic carcinoma. It is predominantly complexed to a liver-derived serine protease inhibitor, alpha-1-antichymotrypsin (ACT). A higher proportion of serum PSA is complexed to ACT in prostate cancer than in benign prostate hyperplasia. PSA is used to confirm prostatic acinar cell origin in primary and metastatic carcinoma and to rule out non-prostatic carcinoma mimics.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: Antigen; Gamma-seminoprotein; Kallikrein 3; Kallikrein-3; Kallikrein-3 (KLK3); kallikrein-related peptidase 3; KLK-3; P-30 antigen; prostate specific antigen; prostate-specific (APS); Prostate-specific antigen; PSA; Semenogelase; Seminin
Gene Aliases: APS; hK3; KLK2A1; KLK3; PSA
UniProt ID: (Human) P07288
Entrez Gene ID: (Human) 354
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