Studies on the targeted delivery of the antifibrogenic compound mycophenolic acid to the hepatic stellate cell

Rick Greupink*, Hester Bakker, Catharina Reker-Smit, Anne-miek van Loenen - Weemaes, R.J Kok, D.K F Meijer, L. Beljaars, Klaas Poelstra

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

43 Citaten (Scopus)


Background/Aims: Hepatic stellate cell (HSC) activation and proliferation are key events in the pathology of liver fibrosis. Inhibiting these parameters, therefore, is a relevant option to treat liver fibrosis pharmacologically. The immunosuppressive drug mycophenolic acid (MPA) has been shown to inhibit proliferation and activation of various types of fibroblasts. In an effort to circumvent the immunosuppression and at the same time enhance this antifibrotic effect, we coupled MPA to the HSC-selective drug carrier mannose-6-phosphate modified human serum albumin and evaluated this conjugate for its specificity and antifibrotic activity.

Methods/Results: We found that MPA inhibited proliferation of HSC in vitro. The drug coupled to the drug carrier bound specifically to HSC and reduced HSC proliferation in vitro. In vivo studies demonstrated that our conjugate accumulated selectively in the liver with significant uptake in HSC apart from Kupffer and endothelial cells, whereas primary and secondary lymphoid tissues were avoided. Treatment of bile duct-ligated rats with this conjugate reduced hepatic inflammation and hepatic alpha-beta-Crystallin mRNA expression, a marker for HSC activation.

Conclusions: This study shows that targeted delivery of MPA to HSC results in a decrease in HSC activation, making it the first drug that is successfully delivered to this cell type. (c) 2005 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.

Originele taal-2English
Pagina's (van-tot)884-892
Aantal pagina's9
TijdschriftJournal of Hepatology
Nummer van het tijdschrift5
StatusPublished - nov-2005

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