XRCC3 polymorphism is associated with hypertension-induced left ventricular hypertrophy
| Autor: | Satoshi Tashiro, Chiemi Sakai, Koji Hiraaki, Mari Ishida, Ryusei Mizuta, Kiyoshi Miyagawa, Aiko Kinomura, Masao Yoshizumi, Keitaro Ueda, Andi Ariyandy, Takafumi Ishida |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Male
0301 basic medicine Senescence medicine.medical_specialty Physiology DNA damage Cell CHO Cells 030204 cardiovascular system & hematology Biology Left ventricular hypertrophy Muscle hypertrophy Mice 03 medical and health sciences Cricetulus 0302 clinical medicine XRCC3 Internal medicine Genotype Internal Medicine medicine Animals Humans Endoreduplication Aged Aged 80 and over Middle Aged medicine.disease DNA-Binding Proteins 030104 developmental biology medicine.anatomical_structure Endocrinology Hypertension NIH 3T3 Cells Female Hypertrophy Left Ventricular Cardiology and Cardiovascular Medicine |
| Zdroj: | Hypertension Research. 41:426-434 |
| ISSN: | 1348-4214 0916-9636 |
| Popis: | Deficiency of X-ray repair cross-complementing protein 3 (XRCC3), a DNA-damage repair molecule, and the 241Met variant of XRCC3 have been reported to increase endoreduplication, which induces polyploidy. The aims of this study were to determine the impact of the XRCC3 polymorphism on the incidence of hypertension-induced left ventricular hypertrophy (LVH) and to investigate the mechanisms underlying any potential relationship. Patients undergoing chronic hemodialysis (n = 77) were genotyped to assess for the XRCC3 Thr241Met polymorphism. The XRCC3 241Thr/Met genotype was more frequent in the LVH (+) group than in the LVH (-) group (42.3 vs. 13.7%, χ2 = 7.85, p = 0.0051). To investigate possible mechanisms underlying these observations, human XRCC3 cDNA of 241Thr or that of 241Met was introduced into cultured CHO cells. The surface area of CHO cells expressing XRCC3 241Met was larger than that expressing 241Thr. Spontaneous DNA double-strand breaks accumulated to a greater degree in NIH3T3 cells expressing 241Met (3T3-241Met) than in those expressing 241Thr (3T3-241Thr). DNA damage caused by radiation induced cell senescence more frequently in 3T3-241Met. The levels of basal and TNF-α-stimulated MCP-1 mRNA and protein secretion were higher in 3T3-241Met. Finally, FACS analysis revealed that the cell percentage in G2/M phase including polyploidy was significantly higher in 3T3-241Met than in 3T3-241Thr. Furthermore, the basal level of MCP-1 mRNA positively correlated with the cell percentage in G2/M phase and polyploidy. These data suggest that the XRCC3 241Met increases the risk of LVH via accumulation of DNA damage, thereby altering cell cycle progression and inducing cell senescence and a proinflammatory phenotype. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink