We studied the gene expression profile during cardiac hypertrophy induced by angiotensin (ANG) II in wild-type mice and the influence of LOX-1 deletion on the gene expression profile. Wild-type and LOX-1 knockout mice were given saline or ANG II infusion for 4 wk. The saline-treated LOX-1 knockout mice showed upregulation of several genes including Ddx3y and Eif2s3y. ANG II infusion enhanced expression of genes known to be associated with cardiac remodeling, such as Agt, Ace, Timp4, Fstl, and Tnfrst12a, as well as oxidant stress-related genes Gnaq, Sos1, and Rac1. Some other strongly upregulated genes identified in this study have not been previously associated with LOX-1 deletion and/or hypertension. To confirm these observations with ANG II infusion and LOX-1 deletion, cultured HL-1 mouse cardiomyocytes were exposed to ANG II or transfected with pCI-neo/LOX-1, which resulted in severalfold increase in reactive oxygen species generation, upregulation of ANG II type 1 (AT(1)) receptor, and cardiomyocyte growth. Quantitative PCR analysis of these treated cardiomyocytes confirmed upregulation of many of the genes identified in the in vivo study. This study provides the first set of data on the gene expression profiling of cardiac tissue treated with ANG II and expands on the important role of LOX-1 in cardiac response to ANG II.

Kang, B., Hu, C., Ryu, S., Khan, J.A., Biancolella, M., Prayaga, S., et al. (2010). Genomics of cardiac remodeling in angiotensin II-treated wild-type and LOX-1-deficient mice. PHYSIOLOGICAL GENOMICS, 42(1), 42-54 [10.1152/physiolgenomics.00009.2010].

Genomics of cardiac remodeling in angiotensin II-treated wild-type and LOX-1-deficient mice

BIANCOLELLA, MICHELA;NOVELLI, GIUSEPPE;
2010

Abstract

We studied the gene expression profile during cardiac hypertrophy induced by angiotensin (ANG) II in wild-type mice and the influence of LOX-1 deletion on the gene expression profile. Wild-type and LOX-1 knockout mice were given saline or ANG II infusion for 4 wk. The saline-treated LOX-1 knockout mice showed upregulation of several genes including Ddx3y and Eif2s3y. ANG II infusion enhanced expression of genes known to be associated with cardiac remodeling, such as Agt, Ace, Timp4, Fstl, and Tnfrst12a, as well as oxidant stress-related genes Gnaq, Sos1, and Rac1. Some other strongly upregulated genes identified in this study have not been previously associated with LOX-1 deletion and/or hypertension. To confirm these observations with ANG II infusion and LOX-1 deletion, cultured HL-1 mouse cardiomyocytes were exposed to ANG II or transfected with pCI-neo/LOX-1, which resulted in severalfold increase in reactive oxygen species generation, upregulation of ANG II type 1 (AT(1)) receptor, and cardiomyocyte growth. Quantitative PCR analysis of these treated cardiomyocytes confirmed upregulation of many of the genes identified in the in vivo study. This study provides the first set of data on the gene expression profiling of cardiac tissue treated with ANG II and expands on the important role of LOX-1 in cardiac response to ANG II.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore MED/03 - Genetica Medica
eng
Con Impact Factor ISI
Angiotensin II; Animals; Blood Pressure; Cell Line; Cell Proliferation; Cell Size; Gene Expression Profiling; Heart; Mice; Mice, Inbred C57BL; Mice, Knockout; Myocardium; Myocytes, Cardiac; Oligonucleotide Array Sequence Analysis; Reactive Oxygen Species; Reverse Transcriptase Polymerase Chain Reaction; Scavenger Receptors, Class E; Vasoconstrictor Agents; Genomics
Kang, B., Hu, C., Ryu, S., Khan, J.A., Biancolella, M., Prayaga, S., et al. (2010). Genomics of cardiac remodeling in angiotensin II-treated wild-type and LOX-1-deficient mice. PHYSIOLOGICAL GENOMICS, 42(1), 42-54 [10.1152/physiolgenomics.00009.2010].
Kang, B; Hu, C; Ryu, S; Khan, J; Biancolella, M; Prayaga, S; Seung, K; Novelli, G; Mehta, P; Mehta, J
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/169087
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