Cathepsins have emerged as promising molecular targets in a number of diseases such as Alzeimer's, inflammation and cancer. Elevated cathepsin's levels and decreased cellular inhibitor concentrations have emphasized the search for novel inhibitors of cathepsins. The present work is focused on the design and synthesis of some acetophenone phenylhydrazone based pyrazole derivatives as novel non peptidyl inhibitors of cathepsins B, H and L. The synthesized compounds after characterization have been explored for their inhibitory potency against cathepsins B, H and L. The results show that some of the synthesized compounds exhibit anti-catheptic activity with K value of the order of 10M. Differential inhibitory effects have been observed for cathepsins B, H and L. Cathepsin L is inhibited more pronounced than cathepsin B and cathepsin H in that order.
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http://dx.doi.org/10.1016/j.bioorg.2017.08.006 | DOI Listing |
Bioorg Chem
December 2017
Department of Chemistry, Kurukshetra University, Kurukshetra 136119, India.
Cathepsins have emerged as promising molecular targets in a number of diseases such as Alzeimer's, inflammation and cancer. Elevated cathepsin's levels and decreased cellular inhibitor concentrations have emphasized the search for novel inhibitors of cathepsins. The present work is focused on the design and synthesis of some acetophenone phenylhydrazone based pyrazole derivatives as novel non peptidyl inhibitors of cathepsins B, H and L.
View Article and Find Full Text PDFMol Cell Biochem
March 2014
Tumor Biology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, 9037, Tromsö, Norway.
The NADPH oxidase (NOX) is a significant determinant for the expression and activity of γ-glutamyltransferase (GGT), which is frequently upregulated after increased levels of reactive oxygen species (ROS) and oxidative stress. Earlier studies on human colon carcinoma HT-29 cells have shown that treatment with phorbol 12-myristate 13-acetate (PMA) activates NOX thus increasing the intracellular level of ROS and upregulating GGT. Another important source of cellular ROS is the mitochondria, and treatment with the mitochondria uncoupler carbonylcyanide-4-(trifluoromethoxy)-phenylhydrazone (FCCP) results in increased ROS levels.
View Article and Find Full Text PDFJ Cell Biochem
May 2010
Department of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei 10051, Taiwan.
This study examined the effect of rottlerin on the focal adhesion-mediated cell migration of CGTH W-2 human follicular thyroid carcinoma cells. Rottlerin (10 microM) resulted in decreased adhesion of CGTH W-2 cells to matrix substance, which was correlated with metastatic potential. Rottlerin treatment also resulted in a marked reduction in the migration of CGTH W-2 cells.
View Article and Find Full Text PDFMolecules
August 2009
Department of Chemistry, Faculty of Science, University of Kuwait, Safat, 13060, P.O. Box 12613, Kuwait.
Phthalimide reacted with phenacyl bromide under microwave irradiation to yield phenacyl isoindolidene-1,3-dione (3b), while 3a reacted with phenylhydrazine to yield the phenylhydrazone 4 that was readily converted into indoylphthalimide 8. Similarly N-benzotriazolylacetone (6a) reacted with phenyl hydrazine to yield the phenylhydrazone 7a that was converted into indoylbenzotriazole 9. Treatment of 8 with hydrazine hydrate afforded a mixture of phthalhydrazide 10 and 3-amino-2-methylindole (11).
View Article and Find Full Text PDFBasic Clin Pharmacol Toxicol
December 2007
Department of Neuroscience, University of Minnesota, Minneapolis, MN 55455, USA.
Rottlerin has been widely accepted as a specific inhibitor of protein kinase C delta (PKC delta); however, recent data suggest that the specificity of this compound become a question. Herein, we address this issue using a lens organ culture system, as PKC delta might regulate the gap junction permeability in lens. Interestingly, we found that rottlerin induced the degradation of connexin50 more rapidly than that of PKC delta.
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