Clara Cell Protein Human ELISA

Research topic

Infection and inflammation

Features

• The total assay time is less than four hours.
• The kit measures total (homodimeric) Clara Cell Protein.
• Quality Controls are human serum based. No animal sera are used.

Storage/Shipping

Store the kit at 2–8°C. Under these conditions, the kit is stable until the expiration date (see label on the box).

Summary

Human Clara Cell Protein (CC16, CC10 and also called uteroglobin, urinary protein 1 or Clara Cell Secretory Protein) belongs to the family of secretoglobins and is a secreted protein product of non-ciliated bronchiolar Clara cells. Its function remains to be elucidated but there is convincing data suggesting its phospholipase A2 inhibitory activity as well as a number of other immunomodulatory features including inhibition of interferon gamma signaling and Th1 vs. Th2 lymphocyte regulation. It was proposed as a potential peripheral marker of respiratory epithelial injury and bronchial dysfunction. In serum, its increase is associated with age, asbestos, nitrogen chloride and ozone exposure, sarcoidosis and high PEEP ventilation. Decreased serum CC16 levels are found after pulmonary resection, in silica-exposed workers, smokers and in asthma. Decreased CC16 concentrations were also found in the amniotic fluid of fetuses suffering from pulmonary hypoplasia caused by various mechanisms (diaphragmatic hernia, diabetic fetopathy, Turner and Down syndrome).

Assay format

Sandwich ELISA, Biotin-labelled antibody

Sample requirements

5 µl/well

Applications

Bronchoalveolar lavage, Cell culture medium, Plasma-Citrate, Plasma-EDTA, Plasma-Heparin, Serum

Calibration Curve

Calibration range

2 to 100 ng/ml

Limit of detection

Analytical Limit of Detection is calculated from the real human Clara Cell Protein values in wells and is 20 pg/ml

Limit of quantification

Assay Sensitivity takes the dilution of samples into consideration and is calculated according to the formula: Assay Sensitivity = Analytical Limit of Detection x sample dilution = 20 pg/ml x 25 = 500 pg/ml

Intra-assay (Within-Run, n=8)

CV = 7.0 %

Inter-assay (Run-to-Run, n=4)

CV = 6.0 %

Spiking Recovery

106.4 %

Dilution Linearity

101.2 %

Cross-Reactivity

Human

References to this product

• Martin AC, Laing IA, Khoo SK, Zhang G, Rueter K, Teoh L, Taheri S, Hayden CM, Geelhoed GC, Goldblatt J, LeSouef PN . Acute asthma in children: Relationships among CD14 and CC16 genotypes, plasma levels, and severity. Am J Respir Crit Care Med . Mar 15 173(6):617-22 (2006)
• Mattsson J, Remberger M, Andersson O, Sundberg B, Nord M. Decreased serum levels of clara cell secretory protein (CC16) are associated with bronchiolitis obliterans and may permit early diagnosis in patients after allogeneic stem-cell transplantation. Transplantation. 2005 May 27;79 (10):1411-6
• Coppens JT, Van Winkle LS, Pinkerton K, Plopper CG. Distribution of Clara cell secretory protein expression in the tracheobronchial airways of rhesus monkeys. Am J Physiol Lung Cell Mol Phy. 2007 May;292 (5):L1155-62
• Thomas W, Kawczynska-Leda N, Seidenspinner S, Chmielnicka-Kopaczyk M, Marx A, Szymankiewicz N, Gadzinowski J, Speer CP . Funiculitis und niedrigere Konzentrationen von Clara-Zell-Sekretorischem Protein (CC10) im Trachealsekret (TS) sehr kleiner Frühgeborener (VLBW) in den ersten Lebenstagen.
• Benson M, Jansson L, Adner M, Luts A, Uddman R, Cardell LO . Gene profiling reveals decreased expression of uteroglobin and other anti-inflammatory genes in nasal fluid cells from patients with intermittent allergic rhinitis. Clin Exp Allergy . Apr;35(4):473-8 (2005)
• Benson M, Fransson M, Martinsson T, Naluai AT, Uddman R, Cardell LO . Inverse relation between nasal fluid Clara Cell Protein 16 levels and symptoms and signs of rhinitis in allergen-challenged patients with intermittent allergic rhinitis. Allergy . Feb;62(2):178-83 (2007)
• Fransson M, Adner M, Uddman R, Cardell LO. Lipopolysaccharide-induced down-regulation of uteroglobin in the human nose. Acta Otolaryngol. 2007 Mar;127 (3):285-91
• Andersson L, Lundberg PA, Barregard L . Methodological aspects on measurement of Clara cell protein in urine as a biomarker for airway toxicity, compared with serum levels. J Appl Toxicol . Dec 22;27(1):60-66 (2006)
• Schnapp LM, Donohoe S, Chen J, Sunde DA, Kelly PM, Ruzinski J, Martin T, Goodlett DR . Mining the acute respiratory distress syndrome proteome: identification of the insulin-like growth factor (IGF)/IGF-binding protein-3 pathway in acute lung injury. Am J Pathol . Jul;169(1):86-95 (2006)
• Harvey BG, Heguy A, Leopold PL, Carolan BJ, Ferris B, Crystal RG . Modification of gene expression of the small airway epithelium in response to cigarette smoking. J Mol Med . Jan;85(1):39-53 (2007)

References to summary

• Backé E, Lotz G, Tittelbach U, Plitzko S, Gierke E and Schneider WD: Immunological biomarkers in salt miners exposed to salt dust, diesel exhaust and nitrogen oxides. Int Arch Occup Environ Health, Jun; 77(5):319–27 (2004)
• Signor L, Tigani B, Beckmann N, Falchetto R and Stoeckli M: Two-dimensional electrophoresis protein profiling and identification in rat bronchoalveolar lavage fluid following allergen and endotoxin challenge. Proteomics, Jul; 4(7):2101–10 (2004)
• Shijubo N., Kawabata I., Sato N., Itoh Y.: Clinical Aspects of Clara Cell 10-kDa Protein/ Uteroglobin (Secretoglobin 1A1), Current Pharmaceutical Design, 9, 1139–1149, (2003)
• Nord M., Schubert K., Cassel T., Andersson O., Riise G.: Decreased serum and bronchoalveolar lavage levels of Clara cell secretory protein (CC16) is associated with bronchiolitis obliterans syndrome and airway neutrophilia in lung transplant recipients. Transplantation, 73, 1264–1269, (2002)
• Petrek M., Hermans C., Kolek V., Fialova J., Bernard A.: Clara cell protein (CC16) in serum and bronchoalveolar lavage fluid of subjects exposed to asbestos. Biomarkers, 7(1), 58–67, (2002)
• Robin M., Dong P., Hermans C., Bernard A., Bersten A.D., Doyle I.R.: Serum levels of CC16, SP-A and SP-B reflect tobacco-smoke exposure in asymptomatic subjects. Eur Respir J, 20(5), 1152–1162, (2002)
• Hermans C., Petrek M., Kolek V., Weynand B., Pieters T., Lambert M., Bernard A.: Serum Clara cell protein (CC16), a marker of the integrity of the air-blood barrier in sarcoidosis. Eur Respir J, 18(3), 507–514 (2001)
• Linnoila I., Szabo E., deMayo F., Witschi H., Sabourin C., Malkinson A.: The role of CC10 in pulmonary carcionogenesis: from a marker to tumor suppression. Annals of the New York Academy of Science, 923, 249–267, (2000)
• Broeckaert F., Clippe A., Knoops B., Hermans C. and Bernard A.: Clara cell secretory protein (CC16): features as a peripheral lung biomarker. Annals of the New York Academy of Science, 923, 68–77, (2000)
• Shijubo N., Itoh Y., Yamaguchi T., Abe S.: Development of an enzyme-linked immunosorbent assay for Clara cell 10-kDa protein: in pursuit of clinical significance of sera in patients with asthma and sarcoidosis. Annals of the New York Academy of Science, 923, 268–279, (2000)
• Bernard A., Roels H., Lauwerys R., Witters R., Gielens C., Soumillion A. et al.: Human urinary protein 1: Evidence for identity with the Clara cell protein and occurrence in respiratory tract and urogenital secretions. Clin Chim Acta, 207, 239–249, (1992) Human Clara Cell Protein ELISA (page 19 of 24) VERSION 04 130707 03
• Bernard A., Lauwerys R., Noel A., Vandeleene B., Lambert A.: Urine protein 1: a sexdependent marker of tubular or glomerular dysfunction. Clin Chem, 35, 2141–2142, (1989)
• Jackson P.J., Turner R., Keen J.N., Brooksbank R.A., Cooper E.H.: Purification and partial amino acid sequence of human urine protein 1. Evidence for homology with rabbit uteroglobin. J Chromatography, 452, 359–367, (1988)