Dietary Geranylgeranyl Pyrophosphate Counteracts the Benefits of Statin Therapy in Experimental Pulmonary Hypertension
| العنوان: | Dietary Geranylgeranyl Pyrophosphate Counteracts the Benefits of Statin Therapy in Experimental Pulmonary Hypertension |
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| المؤلفون: | Fan Xiaohang, Qiang Hao, Qinghua Hu, Shengquan Luo, Rui Xiao, Ting Zhang, Matthieu Ruiz, Xianqin Zeng, Ping Yuan, Tian Feng, Jin-Ming Liu, Jian-Guo He, Liping Zhu, Fangbo Liu, Zeshuai Chen, Jocelyn Dupuis, Mengxiang Sun |
| المصدر: | Circulation. 143:1775-1792 |
| بيانات النشر: | Ovid Technologies (Wolters Kluwer Health), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Male, Geranylgeranyl pyrophosphate, Hypertension, Pulmonary, Endogeny, 030204 cardiovascular system & hematology, Pharmacology, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Polyisoprenyl Phosphates, Physiology (medical), Animals, Humans, Medicine, 030304 developmental biology, 0303 health sciences, business.industry, Cholesterol, medicine.disease, Pulmonary hypertension, Rats, Hydroxymethylglutaryl-CoA Reductase Inhibitors, chemistry, Female, Statin therapy, Mevalonate pathway, Cardiology and Cardiovascular Medicine, business |
| الوصف: | Background: The mevalonate pathway generates endogenous cholesterol and intermediates including geranylgeranyl pyrophosphate (GGPP). By reducing GGPP production, statins exert pleiotropic or cholesterol-independent effects. The potential regulation of GGPP homeostasis through dietary intake and the interaction with concomitant statin therapy is unknown. Methods: We developed a sensitive high-pressure liquid chromatography technique to quantify dietary GGPP and conducted proteomics, qualitative real-time polymerase chain reaction screening, and Western blot to determine signaling cascades, gene expression, protein–protein interaction, and protein membrane trafficking in wild-type and transgenic rats. Results: GGPP contents were highly variable depending on food source that differentially regulated blood GGPP levels in rats. Diets containing intermediate and high GGPP reduced or abolished the effects of statins in rats with hypoxia- and monocrotaline-induced pulmonary hypertension: this was rescuable by methyl-allylthiosulfinate and methyl-allylthiosulfinate–rich garlic extracts. In human pulmonary artery smooth muscle cells treated with statins, hypoxia activated RhoA in an extracellular GGPP-dependent manner. Hypoxia-induced ROCK2 (Rho associated coiled-coil containing protein kinase 2)/Rab10 (Ras-related protein rab-10) signaling was prevented by statin and recovered by exogenous GGPP. The hypoxia-activated RhoA/ROCK2 pathway in rat and human pulmonary artery smooth muscle cells upregulated the expression of Ca 2+ -sensing receptor (CaSR) and HIMF (hypoxia-induced mitogenic factor), a mechanism attenuated by statin treatment and regained with exogenous GGPP. Rab10 knockdown almost abrogated hypoxia-promoted CaSR membrane trafficking, a process diminished by statin and resumed by exogenous GGPP. Hypoxia-induced pulmonary hypertension was reduced in rats with CaSR mutated at the binding motif of HIMF and the interaction between dietary GGPP and statin efficiency was abolished. In humans fed a high GGPP diet, blood GGPP levels were increased. This abolished statin-lowering effects on plasma GGPP, and also on hypoxia-enhanced RhoA activity of blood monocytes that was rescued by garlic extracts. Conclusions: There is important dietary regulation of GGPP levels that interferes with the effects of statin therapy in experimental pulmonary hypertension. These observations rely on a key and central role of RhoA-ROCK2 cascade activation and Rab10-faciliated CaSR membrane trafficking with subsequent overexpression and binding of HIMF to CaSR. These findings warrant clinical investigation for the treatment of pulmonary hypertension and perhaps other diseases by combining statin with garlic-derived methyl-allylthiosulfinate or garlic extracts and thus circumventing dietary GGPP variations. |
| تدمد: | 1524-4539 0009-7322 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd67a46a3b452c588f276f9bf3059356 https://doi.org/10.1161/circulationaha.120.046542 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....dd67a46a3b452c588f276f9bf3059356 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15244539 00097322 |
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