- Catalog number
- EK1836
- Size / count
- 96 Well With Removable Strips
- Dry ice
- No
- Hazardous
- No
- Discontinued
- No
- Background
- Regenerating islet-derived protein 3 alpha for merly known as HIP/PAP (Hepatocarcinoma-Intestine-Pancreas/Pancreatitis-Associated Protein) and peptide 23 is a protein that in humans is encoded by the REG3A gene. This gene is mapped to 4q33. PAP is a secretory protein not normally expressed in healthy pancreas but highly induced during acute pancreatitis. While PAP has been shown to be anti-bacterial and antiapoptotic in vitro, its definitive biological function in vivo is not clear. Using antisepse oligonucleotides, inhibition of PAP expression significantly worsened pancreatitis in a rat model. During pancreatitis, PAP released by the pancreas could mediate lung inflammation through induction of hepatic TNF- alpha expression and subsequent increase in circulating TNFalpha. PAP is activated in primary liver cancers. In normal liver, the protein is undetectable in normal mature hepatocytes and found only in some ductular cells, representing potential hepatic progenitor cells. PAP can be considered hepatic cytokine that combines mitogenic and anti-apoptotic functions regarding hepatocytes, and consequently acts as a growth factor in vivo to enhance liver regeneration. In pancreatic cancor, PAP was overexpressed in 79% (30 of 38) of pancreatic ductal adenocarcinoma, 19% (7 of 36) of chronic pancreatitis, and 29% (2 of 7) of mucinous cystadenoma. PAP was found in malignant ductular structures in pancreatic carcinomas as well as in benign proliferating ductules and acinar cells in chronic pancreatitis. Elevation of PAP in patients with pancreatic cancer is not merely explainable by concomitant pancreatitis, but seems to be due to increased PAP production by the cancer cells and is also correlated to tumour load as expressed by the UICC stages. Epithelial expression of PAP was induced under intestinal mucosal inflammation initiated by exposure to commensal bacteria or DSS as well as inflamed IBD colon. Increased serum level of PAP diagnosed ileal location in active Crohn disease with a sensitivity of 60%, a specificity of 94%, a positive predictive value of 84% and a negative predictive value of 81%. Elevated serum PAP (> 50 ng/mL) is significantly associated with disease activity and ileal location of Crohn disease.
- Reproducibility
- Lots Lot 1 (pg/ml) Lot 2 (pg/ml) Lot 3 (pg/ml) Lot 4 (pg/ml) Mean (pg/ml) Standard Deviation CV (%) Sample 1 32 28 32 28 30 2.00 6.6% Sample 2 221 214 235 225 223 7.59 3.4% Sample 3 466 471 482 457 469 9.02 1.9% Lots Lot 1 (pg/ml) Lot 2 (pg/ml) Lot 3 (pg/ml) Lot 4 (pg/ml) Mean (pg/ml) Standard Deviation CV (%) Lots Lot 1 (pg/ml) Lot 2 (pg/ml) Lot 3 (pg/ml) Lot 4 (pg/ml) Mean (pg/ml) Standard Deviation CV (%) Sample 1 32 28 32 28 30 2.00 6.6% Sample 1 32 28 32 28 30 2.00 6.6% Sample 2 221 214 235 225 223 7.59 3.4% Sample 2 221 214 235 225 223 7.59 3.4% Sample 3 466 471 482 457 469 9.02 1.9% Sample 3 466 471 482 457 469 9.02 1.9%
- Synonyms
- Regenerating islet-derived protein 3-alpha; REG-3-alpha; Islet of Langerhans regenerating protein 3; REG 3; Lithostathine 3; Pancreatitis-associated protein 2; RegIII; Regenerating islet-derived protein III-alpha; Reg III-alpha; Reg3a; Pap2; Reg3
- Gene Name
- Reg3a
- Gene ID
- 171162
- UniProt
- P35231
- Reactivity
- Rat
- Cross Reactivity
- There is no detectable cross-reactivity with other relevant proteins.
- Immunogen
- Expression system for standard: NS0; Immunogen sequence: E26-Q174
- Capture Antibody
- A monoclonal antibody from mouse
- Detection Antibody
- A biotinylated detection polyclonal antibody from goat
- Tissue Specificity
- Low expression found in healthy pancreas.
- Applications
- ELISA
- Standard
- 10 ng/Tube
- Sample Type
- Cell culture supernatants, serum and plasma (heparin, EDTA, citrate) .
- Detection Range
- 15.6 pg/mL - 1,000 pg/mL
- Precision
- Intra-Assay Precision Inter-Assay Precision Sample 1 2 3 1 2 3 n 16 16 16 24 24 24 Mean (pg/ml) 32 221 466 34 229 473 Standard deviation 1.41 10.4 25.16 2.14 15.3 35 CV (%) 4.4% 4.7% 5.4% 6.3% 6.7% 7.4% Intra-Assay Precision Inter-Assay Precision Sample 1 2 3 1 2 3 n 16 16 16 24 24 24 Mean (pg/ml) 32 221 466 34 229 473 Standard deviation 1.41 10.4 25.16 2.14 15.3 35 CV (%) 4.4% 4.7% 5.4% 6.3% 6.7% 7.4% Intra-Assay Precision Inter-Assay Precision Intra-Assay Precision Inter-Assay Precision Sample 1 2 3 1 2 3 Sample 1 2 3 1 2 3 n 16 16 16 24 24 24 n 16 16 16 24 24 24 Mean (pg/ml) 32 221 466 34 229 473 Mean (pg/ml) 32 221 466 34 229 473 Standard deviation 1.41 10.4 25.16 2.14 15.3 35 Standard deviation 1.41 10.4 25.16 2.14 15.3 35 CV (%) 4.4% 4.7% 5.4% 6.3% 6.7% 7.4% CV (%) 4.4% 4.7% 5.4% 6.3% 6.7% 7.4%
- Sensitivity
- <10 pg/mL
- Function
- Bactericidal C-type lectin. Regulates keratinocyte proliferation and differentiation after skin injury via activation of EXTL3-PI3K-AKT signaling pathway.
- Components
- Description|Quantity Pre-coated 96-well strip microplate|1 Standard|2 vials Biotinylated antibody (100x) |100ul Avidin-Biotin-Peroxidase Complex (100x) |100ul Sample Diluent|30ml Antibody Diluent|12ml Avidin-Biotin-Peroxidase Diluent|12ml Color Developing Reagent (TMB) |10ml Stop Solution|10ml Wash Buffer (25x) |20ml Adhesive plate sealers|4
- Storage Conditions
- Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles (Ships with gel ice, can store for up to 3 days in room temperature. Freeze upon receiving.)
- Specificity
- Natural and recombinant rat REG3A
- Anticoagulant
- Heparin
- Gene Name Synonym
- Regenerating islet-derived 3 alpha
- Subcellular Location
- Secreted
- Sample Data
- Concentration (pg/ml) 0 15.6 31.2 62.5 125 250 500 1000 O.D. 0.03 0.085 0.138 0.229 0.423 0.806 1.391 2.271 Concentration (pg/ml) 0 15.6 31.2 62.5 125 250 500 1000 O.D. 0.03 0.085 0.138 0.229 0.423 0.806 1.391 2.271 Concentration (pg/ml) 0 15.6 31.2 62.5 125 250 500 1000 Concentration (pg/ml) 0 15.6 31.2 62.5 125 250 500 1000 O.D. 0.03 0.085 0.138 0.229 0.423 0.806 1.391 2.271 O.D. 0.03 0.085 0.138 0.229 0.423 0.806 1.391 2.271
- Material Required But Not Provided
- Microplate Reader capable of reading absorbance at 450nm. Incubator. Automated plate washer (optional) . Pipettes and pipette tips capable of precisely dispensing 0.5 μl through 1 ml volumes of aqueous solutions. Multichannel pipettes are recommended for large amount of samples. Deionized or distilled water. 500ml graduated cylinders. Test tubes for dilution.
