Alpha(1)-antitrypsin is the most abundant circulating protease inhibitor. The severe Z deficiency allele (G1u342Lys) causes the protein to undergo a conformational transition and form ordered polymers that are retained within hepatocytes. This causes neonatal hepatitis, cirrhosis, and hepatocellular carcinoma. We have developed a conformation-specific monoclonal antibody (2C1) that recognizes the pathological polymers formed by alpha(1)-antitrypsin. This antibody was used to characterize the Z variant and a novel shutter domain mutant (His334Asp; a(1)-antitrypsin King's) identified in a 6-week-old boy who presented with prolonged jaundice. His334Asp a(1)-antitrypsin rapidly forms polymers that accumulate within the endoplasmic reticuhun and show delayed secretion when compared to the wild-type M a(1)-antitrypsin. The 2C1 antibody recognizes polymers formed by Z and His334Asp trypsin despite the mutations directing their effects on different parts of the protein. This antibody also recognized polymers formed by the Siiyama (Ser53Phe) and Brescia (Gly225Arg) mutants, which also mediate their effects on the shutter region of alpha(1)-rantitrypsin. Conclusion: Z and shutter domain mutants of alpha(1)-antitrypsin form polymers with a shared epitope and so are likely to have a similar structure. (HEPATOLOGY 2010;52:1078-1088)

A novel monoclonal antibody to characterize pathogenic polymers in liver disease associated with alpha1-antitrypsin deficiency / MIRANDA BANOS, MARIA ELENA; J., Perez; U. I., Ekeowa; N., Hadzic; N., Kalsheker; B., Gooptu; B., Portmann; D., Belorgey; M., Hill; S., Chambers; J., Teckman; G., Alexander; Alexander, Gj; S. J., Marciniak; D. A., Lomas. - In: HEPATOLOGY. - ISSN 0270-9139. - 52:3(2010), pp. 1078-1088. [10.1002/hep.23760]

A novel monoclonal antibody to characterize pathogenic polymers in liver disease associated with alpha1-antitrypsin deficiency.

MIRANDA BANOS, MARIA ELENA;
2010

Abstract

Alpha(1)-antitrypsin is the most abundant circulating protease inhibitor. The severe Z deficiency allele (G1u342Lys) causes the protein to undergo a conformational transition and form ordered polymers that are retained within hepatocytes. This causes neonatal hepatitis, cirrhosis, and hepatocellular carcinoma. We have developed a conformation-specific monoclonal antibody (2C1) that recognizes the pathological polymers formed by alpha(1)-antitrypsin. This antibody was used to characterize the Z variant and a novel shutter domain mutant (His334Asp; a(1)-antitrypsin King's) identified in a 6-week-old boy who presented with prolonged jaundice. His334Asp a(1)-antitrypsin rapidly forms polymers that accumulate within the endoplasmic reticuhun and show delayed secretion when compared to the wild-type M a(1)-antitrypsin. The 2C1 antibody recognizes polymers formed by Z and His334Asp trypsin despite the mutations directing their effects on different parts of the protein. This antibody also recognized polymers formed by the Siiyama (Ser53Phe) and Brescia (Gly225Arg) mutants, which also mediate their effects on the shutter region of alpha(1)-rantitrypsin. Conclusion: Z and shutter domain mutants of alpha(1)-antitrypsin form polymers with a shared epitope and so are likely to have a similar structure. (HEPATOLOGY 2010;52:1078-1088)
01 Pubblicazione su rivista::01a Articolo in rivista
A novel monoclonal antibody to characterize pathogenic polymers in liver disease associated with alpha1-antitrypsin deficiency / MIRANDA BANOS, MARIA ELENA; J., Perez; U. I., Ekeowa; N., Hadzic; N., Kalsheker; B., Gooptu; B., Portmann; D., Belorgey; M., Hill; S., Chambers; J., Teckman; G., Alexander; Alexander, Gj; S. J., Marciniak; D. A., Lomas. - In: HEPATOLOGY. - ISSN 0270-9139. - 52:3(2010), pp. 1078-1088. [10.1002/hep.23760]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/141990
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? 70
  • Scopus 116
  • ???jsp.display-item.citation.isi??? 114
social impact