Cargando…
Complement Component C3 Participates in Early Stages of Niemann–Pick C Mouse Liver Damage
Niemann–Pick type C (NPC), a lysosomal storage disorder, is mainly caused by mutations in the NPC1 gene. Niemann–Pick type C patients and mice show intracellular cholesterol accumulation leading to hepatic failure with increased inflammatory response. The complement cascade, which belongs to the inn...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7139721/ https://www.ncbi.nlm.nih.gov/pubmed/32244854 http://dx.doi.org/10.3390/ijms21062127 |
_version_ | 1783518831577137152 |
---|---|
author | Klein, Andrés D. González de la Vega, Javier Zanlungo, Silvana |
author_facet | Klein, Andrés D. González de la Vega, Javier Zanlungo, Silvana |
author_sort | Klein, Andrés D. |
collection | PubMed |
description | Niemann–Pick type C (NPC), a lysosomal storage disorder, is mainly caused by mutations in the NPC1 gene. Niemann–Pick type C patients and mice show intracellular cholesterol accumulation leading to hepatic failure with increased inflammatory response. The complement cascade, which belongs to the innate immunity response, recognizes danger signals from injured tissues. We aimed to determine whether there is activation of the complement system in the liver of the NPC mouse and to assess the relationship between C3 activation, a final component of the pathway, and NPC liver pathology. Niemann–Pick type C mice showed high levels of C3 staining in the liver which unexpectedly decreased with aging. Using an inducible NPC1 hepatocyte rescue mouse model, we restored NPC1 expression for a short time in young mice. We found C3 positive cells only in non-rescued cells, suggesting that C3 activation in NPC cells is reversible. Then, we studied the effect of C3 ablation on NPC liver damage at two postnatal time points, P56 and P72. Deletion of C3 reduced the presence of hepatic CD68-positive cells at postnatal day 56 and prevented the increase of transaminase levels in the blood of NPC mice. These positive effects were abrogated at P72, indicating that the complement cascade participates only during the early stages of liver damage in NPC mice, and that its inhibition may serve as a new potential therapeutic strategy for the disease. |
format | Online Article Text |
id | pubmed-7139721 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-71397212020-04-10 Complement Component C3 Participates in Early Stages of Niemann–Pick C Mouse Liver Damage Klein, Andrés D. González de la Vega, Javier Zanlungo, Silvana Int J Mol Sci Article Niemann–Pick type C (NPC), a lysosomal storage disorder, is mainly caused by mutations in the NPC1 gene. Niemann–Pick type C patients and mice show intracellular cholesterol accumulation leading to hepatic failure with increased inflammatory response. The complement cascade, which belongs to the innate immunity response, recognizes danger signals from injured tissues. We aimed to determine whether there is activation of the complement system in the liver of the NPC mouse and to assess the relationship between C3 activation, a final component of the pathway, and NPC liver pathology. Niemann–Pick type C mice showed high levels of C3 staining in the liver which unexpectedly decreased with aging. Using an inducible NPC1 hepatocyte rescue mouse model, we restored NPC1 expression for a short time in young mice. We found C3 positive cells only in non-rescued cells, suggesting that C3 activation in NPC cells is reversible. Then, we studied the effect of C3 ablation on NPC liver damage at two postnatal time points, P56 and P72. Deletion of C3 reduced the presence of hepatic CD68-positive cells at postnatal day 56 and prevented the increase of transaminase levels in the blood of NPC mice. These positive effects were abrogated at P72, indicating that the complement cascade participates only during the early stages of liver damage in NPC mice, and that its inhibition may serve as a new potential therapeutic strategy for the disease. MDPI 2020-03-20 /pmc/articles/PMC7139721/ /pubmed/32244854 http://dx.doi.org/10.3390/ijms21062127 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Klein, Andrés D. González de la Vega, Javier Zanlungo, Silvana Complement Component C3 Participates in Early Stages of Niemann–Pick C Mouse Liver Damage |
title | Complement Component C3 Participates in Early Stages of Niemann–Pick C Mouse Liver Damage |
title_full | Complement Component C3 Participates in Early Stages of Niemann–Pick C Mouse Liver Damage |
title_fullStr | Complement Component C3 Participates in Early Stages of Niemann–Pick C Mouse Liver Damage |
title_full_unstemmed | Complement Component C3 Participates in Early Stages of Niemann–Pick C Mouse Liver Damage |
title_short | Complement Component C3 Participates in Early Stages of Niemann–Pick C Mouse Liver Damage |
title_sort | complement component c3 participates in early stages of niemann–pick c mouse liver damage |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7139721/ https://www.ncbi.nlm.nih.gov/pubmed/32244854 http://dx.doi.org/10.3390/ijms21062127 |
work_keys_str_mv | AT kleinandresd complementcomponentc3participatesinearlystagesofniemannpickcmouseliverdamage AT gonzalezdelavegajavier complementcomponentc3participatesinearlystagesofniemannpickcmouseliverdamage AT zanlungosilvana complementcomponentc3participatesinearlystagesofniemannpickcmouseliverdamage |