c-Jun N-terminal kinase-1 from hematopoietic cells mediates progression from hepatic steatosis to steatohepatitis and fibrosis in mice.
Abstract | BACKGROUND & AIMS: METHODS: Hepatic steatosis, inflammation, and fibrosis were examined in wild-type, jnk1(-/-), or jnk2(-/-) mice fed a choline-deficient L- amino acid-defined ( CDAA) diet for 20 weeks. The functional contribution of JNK isoforms in Kupffer cells was assessed in vitro and in vivo using chimeric mice in which the hematopoietic compartment including Kupffer cells was replaced by wild-type, jnk1(-/-), or jnk2(-/-) cells. RESULTS:
CDAA diet induced significantly less hepatic inflammation and less liver fibrosis despite a similar level of hepatic steatosis in jnk1(-/-) mice as compared with wild-type or jnk2(-/-) mice. CDAA diet-induced hepatic inflammation was chronic and mediated by Kupffer cells. Pharmacologic inhibition of JNK or gene deletion of jnk1 but not jnk2 repressed the expression of inflammatory and fibrogenic mediators in primary Kupffer cells. In vivo, CDAA diet induced less hepatic inflammation and liver fibrosis despite an equivalent level of hepatic steatosis in chimeric mice with jnk1(-/-) hematopoietic cells as compared with chimeric mice with wild-type or jnk2(-/-) hematopoietic cells. CONCLUSIONS:
|
Authors | Yuzo Kodama, Tatiana Kisseleva, Keiko Iwaisako, Kouichi Miura, Kojiro Taura, Samuele De Minicis, Christoph H Osterreicher, Bernd Schnabl, Ekihiro Seki, David A Brenner |
Journal | Gastroenterology
(Gastroenterology)
Vol. 137
Issue 4
Pg. 1467-1477.e5
(Oct 2009)
ISSN: 1528-0012 [Electronic] United States |
PMID | 19549522
(Publication Type: Comparative Study, Journal Article, Research Support, N.I.H., Extramural)
|
Chemical References |
- Inflammation Mediators
- Protein Kinase Inhibitors
- RNA, Messenger
- Mitogen-Activated Protein Kinase 9
- Mitogen-Activated Protein Kinase 8
|
Topics |
- Animals
- Bone Marrow Cells
(drug effects, enzymology, immunology, pathology)
- Bone Marrow Transplantation
- Cells, Cultured
- Chimera
- Choline Deficiency
(complications, enzymology)
- Disease Progression
- Fatty Liver
(enzymology, etiology, immunology, prevention & control)
- Hepatitis, Chronic
(enzymology, etiology)
- Inflammation Mediators
(metabolism)
- Kupffer Cells
(drug effects, enzymology, immunology, pathology)
- Liver
(drug effects, enzymology, immunology, pathology)
- Liver Cirrhosis, Experimental
(enzymology, etiology, immunology, prevention & control)
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mitogen-Activated Protein Kinase 8
(antagonists & inhibitors, deficiency, genetics, metabolism)
- Mitogen-Activated Protein Kinase 9
(genetics, metabolism)
- Protein Kinase Inhibitors
(pharmacology)
- RNA, Messenger
(metabolism)
- Signal Transduction
- Time Factors
|
|
Join CureHunter, for free Research Interface BASIC access!
Take advantage of free CureHunter research engine access to explore the best drug and treatment options for any disease.
Find out why thousands of doctors, pharma researchers and patient activists
around the world use CureHunter every day.
Realize the full power of the drug-disease research graph!
|