TY - JOUR
T1 - Enzyme-linked immunosorbent serum assay specific for the 7S domain of Collagen Type IV (P4NP 7S)
T2 - A marker related to the extracellular matrix remodeling during liver fibrogenesis
AU - Leeming, Diana Julie
AU - Nielsen, Mette J
AU - Dai, Yueqin
AU - Veidal, Sanne Skovgård
AU - Vassiliadis, Efstathios
AU - Zhang, Chen
AU - He, Yi
AU - Vainer, Ben
AU - Zheng, Qinlong
AU - Karsdal, Morten A
N1 - © 2012 The Japan Society of Hepatology.
PY - 2012
Y1 - 2012
N2 - Aim: The present study describes the ability of a newly developed N-terminal pro-peptides of type IV collagen 7S domain (P4NP 7S) competitive enzyme-linked immunosorbent assay (ELISA) for describing liver fibrosis. The assay applies a monoclonal antibody specific for a PIVNP 7S epitope 100% homologous in the human, rat, and mouse species. Methods: Monoclonal antibodies were raised against selected P4NP 7S specific sequences. Antibodies were screened and a competitive ELISA assay was developed using a selected antibody. The assay was evaluated in relation to technical performance, and in two preclinical liver fibrosis models; the bile duct ligation model (BDL) and the carbon tetrachloride model (CCL4) both performed in rats. Results: A technically robust P4NP 7S ELISA assay using a monoclonal antibody was produced. In the BDL and CCL4 liver fibrosis models it was observed that the P4NP 7S levels were significantly elevated in rat with liver fibrosis as seen by histology (CCL4: 283% elevated in the highest quartile of total hepatic collagen compared with controls, P = 0.001; BDL: 183% elevated at week 4 compared with sham, P
AB - Aim: The present study describes the ability of a newly developed N-terminal pro-peptides of type IV collagen 7S domain (P4NP 7S) competitive enzyme-linked immunosorbent assay (ELISA) for describing liver fibrosis. The assay applies a monoclonal antibody specific for a PIVNP 7S epitope 100% homologous in the human, rat, and mouse species. Methods: Monoclonal antibodies were raised against selected P4NP 7S specific sequences. Antibodies were screened and a competitive ELISA assay was developed using a selected antibody. The assay was evaluated in relation to technical performance, and in two preclinical liver fibrosis models; the bile duct ligation model (BDL) and the carbon tetrachloride model (CCL4) both performed in rats. Results: A technically robust P4NP 7S ELISA assay using a monoclonal antibody was produced. In the BDL and CCL4 liver fibrosis models it was observed that the P4NP 7S levels were significantly elevated in rat with liver fibrosis as seen by histology (CCL4: 283% elevated in the highest quartile of total hepatic collagen compared with controls, P = 0.001; BDL: 183% elevated at week 4 compared with sham, P
U2 - 10.1111/j.1872-034X.2011.00946.x
DO - 10.1111/j.1872-034X.2011.00946.x
M3 - Journal article
C2 - 22221767
SN - 1386-6346
VL - 42
SP - 482
EP - 493
JO - Hepatology Research
JF - Hepatology Research
IS - 5
ER -