Abstract
Protease activity present in liver cells with steatosis can be electrophoretically characterized. Zymographic techniques allow semi-quantitative results, successfully detecting cathepsin and metalloprotease activity using polyacrylamide gels copolymerized with gelatin and quantified by densitometry. By using specific inhibitors, the identity of the proteases can be confirmed. 2D zymography allows the determination of both M r. and pI of the metalloprotease and cathepsin activity present in the homogenates. The analysis of liver proteases activities in force fed ducks may elucidate the mechanisms behind steatosis development.
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Abbreviations
- 2DE:
-
Two dimensional electrophoresis
- 2DZ:
-
Two dimensional zymography
- DTT:
-
Dithiothreitol
- EDTA:
-
Ethylenediaminetetraacetic acid
- IEF:
-
Isoelectric focusing
- MMP:
-
Matrix metalloproteases
- PAG:
-
Polyacrylamide gel
- PAGE:
-
Polyacrylamide gel electrophoresis
- pI :
-
Isoelectric point
- PMSF:
-
Phenylmethyl sulfonyl fluoride
- SDS:
-
Sodium dodecyl sulphate
- TCA:
-
Trichloroacetic acid
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Acknowledgments
We thank INP-ENSAT for supporting the stay of Dr. Wilkesman at GenPhySE, Université de Toulouse, as well as the Consejo de Desarrollo Científico y Humanísitico de la Universidad de Carabobo, Venezuela, for partial funding of this research (CDCH-AM-030-11, CDCH-187-2015). The authors thank the staff of GenPhySE lab for technical assistance and Dr. Molette for her useful comments.
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Wilkesman, J., Padrón, M.F., Kurz, L., Rémignon, H. (2017). Two-Dimensional Zymography of Proteases from Steatotic Duck Liver. In: Wilkesman, J., Kurz, L. (eds) Zymography. Methods in Molecular Biology, vol 1626. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-7111-4_14
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DOI: https://doi.org/10.1007/978-1-4939-7111-4_14
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