EFFECT OF OXIDIZED LOW DENSITY LIPOPROTEIN ON THE EXPRESSION OF RUNX2 AND SPARC GENES IN VASCULAR SMOOTH MUSCLE CELLS

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FARROKHI EFFAT; GHATREH SAMANI KEIHAN; HASHEMZADEH CHALESHTORI MORTEZA; TABATABAIEFAR MOHAMMAD AMIN

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Journal: Iranian Biomedical Journal Year:2015 | Volume:19 | Issue:3 Page(s): 160-164

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Title

EFFECT OF OXIDIZED LOW DENSITY LIPOPROTEIN ON THE EXPRESSION OF RUNX2 AND SPARC GENES IN VASCULAR SMOOTH MUSCLE CELLS

Author(s)

FARROKHI EFFAT | GHATREH SAMANI KEIHAN | HASHEMZADEH CHALESHTORI MORTEZA | TABATABAIEFAR MOHAMMAD AMIN | Issue Writer Certificate

Keywords

VASCULAR CALCIFICATION

OXIDIZED LOW DENSITY LIPOPROTEIN

OSTEONECTIN

RUNX2

Abstract

Background: VASCULAR CALCIFICATION is an important stage in atherosclerosis. During this stage, vascular smooth muscle cells (VSMC) synthesize many osteogenic factors such as OSTEONECTIN (encoded by SPARC). Oxidative stress plays a critical role in atherosclerosis progression, and its accumulation in the vascular wall stimulates the development of atherosclerosis and VASCULAR CALCIFICATION. The OSTEONECTIN overexpression has been observed in the arterial wall during the course of atherosclerosis. However, the regulatory mechanism of OXIDIZED LOW DENSITY LIPOPROTEIN (oxLDL) -mediated VASCULAR CALCIFICATION remains to be clarified. The aim of this study was to investigate the effect of oxLDL on the OSTEONECTIN gene expression through the RUNX2 transcription factor.Methods: In this experimental study, VSMC were cultured in F-12K media and then treated with oxLDL. The expression of RUNX2 and OSTEONECTIN genes was determined by real-time PCR method. Protein levels were investigated by the western blotting technique. The RUNX2 gene was knocked down using siRNA in order to determine whether RUNX2 regulates the OSTEONECTIN expression in VSMC induced by oxLDL. Then transfected cells were treated with oxLDL, and the expression levels of RUNX2 and OSTEONECTIN were determined again.Results: oxLDL was found to increase RUNX2 and OSTEONECTIN gene expression (4.8 ± 0.47- and 9.2 ± 1.96-fold, respectively) after 48 h. Western blotting analysis confirmed the induced levels of RUNX2 and OSTEONECTIN proteins. However, oxLDL-induced OSTEONECTIN expression was not observed to be blocked by RUNX2 knockdown.Conclusion: The up-regulation of OSTEONECTIN by oxLDL is independent of RUNX2, and it may be mediated by other transcription factors.

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APA: Copy

FARROKHI, EFFAT, GHATREH SAMANI, KEIHAN, HASHEMZADEH CHALESHTORI, MORTEZA, & TABATABAIEFAR, MOHAMMAD AMIN. (2015). EFFECT OF OXIDIZED LOW DENSITY LIPOPROTEIN ON THE EXPRESSION OF RUNX2 AND SPARC GENES IN VASCULAR SMOOTH MUSCLE CELLS. IRANIAN BIOMEDICAL JOURNAL, 19(3), 160-164. SID. https://sid.ir/paper/277336/en

Vancouver: Copy

FARROKHI EFFAT, GHATREH SAMANI KEIHAN, HASHEMZADEH CHALESHTORI MORTEZA, TABATABAIEFAR MOHAMMAD AMIN. EFFECT OF OXIDIZED LOW DENSITY LIPOPROTEIN ON THE EXPRESSION OF RUNX2 AND SPARC GENES IN VASCULAR SMOOTH MUSCLE CELLS. IRANIAN BIOMEDICAL JOURNAL[Internet]. 2015;19(3):160-164. Available from: https://sid.ir/paper/277336/en

IEEE: Copy

EFFAT FARROKHI, KEIHAN GHATREH SAMANI, MORTEZA HASHEMZADEH CHALESHTORI, and MOHAMMAD AMIN TABATABAIEFAR, “EFFECT OF OXIDIZED LOW DENSITY LIPOPROTEIN ON THE EXPRESSION OF RUNX2 AND SPARC GENES IN VASCULAR SMOOTH MUSCLE CELLS,” IRANIAN BIOMEDICAL JOURNAL, vol. 19, no. 3, pp. 160–164, 2015, [Online]. Available: https://sid.ir/paper/277336/en

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