Monitoring the Expression of Leptin Receptor in Avian Model
Keywords:
broiler chickens, gene expression, leptin receptor, primer pairAbstract
In this study we carried the expression of leptin receptor in organs and abdominal fat of broiler chickens. The leptin receptor is a member of the class I cytokine receptor family, also known as the gpl30 receptor family, although unlike many other family members, the leptin receptor does not form oligomers with gpl30. Activation of leptin receptors directly or indirectly activates multiple signaling pathways that involve kinase-induced phosphorylation of proteins, including JAK2/STAT3, erbB2, ERK, IRS1 and rho/rac. Signaling requires the presence of intact intracellular domains of the receptor. The leptin receptor is an external tyrosine kinase receptor; upon ligand binding each receptor can bind and activate the tyrosine kinase JAK2, which then cross-phosphorylates tyrosine residues in the other receptor in the dimer. In this study we examined the expression of leptin receptor in organs and abdominal fat of broiler chickens. The aim of our experiment was to optimize the methodology for monitoring the expression of the leptin receptor in avian model. We studied the activity of leptin receptor in the liver, heart, spleen and abdominal fat in the final fattening type broiler chickens Ross 308. In heart tissue, spleen, liver at a relatively high concentration of total cDNA in the sample length leptin receptor fragment located in the expected quantities.
References
Maeda, K., Okubo, K., Shimomura, I., Mizuno, K., Matsuzawa, Y., Matsubara, K., Analysis of an expression profile of genes in the human adipose tissue, Animal Genetics, 1997, 190, 223¬-235
Trayhurm, P., Bing, C., Appetite and energy balance sygnals from adipocytes Philos. Trans. R. Soc. Lond. B., Biological Sciences, 2006, 361, 1237-1249
Lee, G.H.¬¬, Proenca, R., Montez, J.M., Carroll, K. M., Darvishzadeh, J. G., Lee, J.I., Abnormal splicing of the leptin receptor, Diabetic mice, Nature, 1996, 293, 632-635
Zhang, Y., Proenca, R., Maffei, M., Positional cloning of the mouse obese gene and its human homologue, Nature, 1994, 63, 425-432
Doyon, C., Drouin, G., Trudeau, V. L., Moon, T. W, Molecular evolution of leptin, General and Comparative Endocrinology, 2001, 2, 188-198
Taouis, M., Chen, J.W., Daviaud, C., Cloning the chicken leptin gene, Genetics, 1998, 2, 239-242
Ashwell, C.M., Czerwinski, S.M., Brocht, D.M. et al., Hormonal regulation of leptin expression in broiler chickens, American Journal of Physiology, 1999, 5, 226-232
Dridi, S., Raver, N., Gussakovsky, E.E., Derouet, M., Picard, M., Gertler, A., Taouis, M., Biological activities of recombinant chicken leptin C4S analog compared with unmodified leptins, American Journal of Physiology, 2000, 1, 116-123
Friedman, J.M., Hall, J.L., Leptin and the regulation
of body weight in mammals, Nature, 1998, 6704, 763-770
Cinti, S., Frederich, R.C., Zingaretti, M.C., DeMatteis, R., Flier, J.S., Lowell, B.B., Imnunohistochemical localization of leptin and uncoupling protein in white and brown adipose tissue, Endocrinology, 1997, 35, 797-804
Masuzaki, H., Ogawa, Y., Sagawa N., Nonadipose tissue production of leptin: Leptin as a novel placenta-derived hormone in humans, Nature Medicine, 1997, 9, 1029-1033
Bado, A., Levasseur, S., Attoub, S., Kermogant, S., Laigneau, J.P., The stomach is a source of leptin, Nature, 1998, 9, 790-793
Wang, M.Y., Zhou, Y.T., Newgard, C.B., Unger, R.H., A novel leptin receptor isoform in rat, FEBS Letters, 1998, 6, 87-90
Casabiel, X., Pineiro, V., Tome, M.A., Peino, R., DiegueZ, C., Casnueva, F.F., Presence of leptin in colostrum and/or breast milk from lactating mothers: a potential role in the regulation of neonatal food intake, Journal of Clinical Endocrinology, 1997, 10, 4270-4273
Murakami, T., Otanis., Honjoh,T., Influence of the presence of Ob-Re on leptin radioimmunoassay, Journal of Endocrinology, 2001, 36, 79-86
Mercer, J.G., Moar, K.M., Rayner, D.V., Trayhum, P., Hoggard, N., Regulation of leptin receptor and NPY gene expression in hypothalamus of leptin-treated obese (ob/ob) and cold exposed lean mice, FEBS Letters, 1997, 15, 185-188
Simon, I., Chevalier, B., Derouet, M., Leclerg, B., Normal number and kinase activity of insulin receptors in liver of genetically fat chickens, Journal of Natural Products, 1991, 8, 379-385
Elmquist, J.K., Bjorbaek, C., Ahima, R.S., Distributions of leptin receptor mRNA isoforms in the rat brain, Journal of Neurology, 1998, 34, 535-547
Bjorbaek, C., Uotani, S., Da Silva, B., Flier, J.S., Divergent signaling capacities of the long and short isoforms of the leptin receptors, Journal of Experimental Biology, 1997, 32, 686-695
Matarese, G., Moschos, S., Mantzoros, CS., Leptin in immunology, Journal of Immunology, 2005, 174, 3137-3142
Kopečný, M., Stratil, A., Čepica, S., Polymorphism at the LEPR gene detected by PCR, Animal Genetics, 1997, 3, 461
Liu, X., Dunn, J. C., Sharp, P. J., Boswell, T., Molecular cloning snd tissue distribution of a short form chicken leptin receptor mRNA, Domestic Animal Endocrinoogy, 2007, 32, 155-166
Cassy, S., Metayer, S., Crochet, S., Rideau, N., Collin, A., Tesseraud, S., Leptin receptor in the chicken ovary: potential involvement in ovarian dysfunction of ad libitum-fed broiler breeder hens, Reproductive Biology and Endocrinology, 2005, 72, 178-186
Kunová, S., Hleba, L., Haščík, P., Čuboň, J., Kačániová, M., Determination of leptin expression in beef cattle blood samples used by RTQ PCR, Journal of Microiology, Biotechology and Food Sciences, 2011, 1, 21-38.