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The Angiopoietin-like Protein (ANGPTL) Axis in Dyslipidemia: Mechanisms, Cardiovascular Risk, and Emerging Therapies
Isabela C Bitencourt1, André Zimerman1,2, Nicholas A Marston3
1MOVE Academic Research Organization, Hospital Moinhos de Vento, Moinhos de Vento Medical School, Porto Alegre, Brazil.
Purpose Of Review:
The angiopoietin-like protein (ANGPTL) 3-4-8 axis has emerged as a central regulator of lipoprotein lipase and lipid metabolism. This review examines the mechanistic basis of ANGPTL pathway modulation and therapeutic implications for cardiovascular risk reduction across diverse phenotypes of dyslipidemia.
Recent Findings:
Genetic studies demonstrate that loss-of-function variants in ANGPTL3 and ANGPTL4 are associated with lower triglycerides and decreased coronary artery disease risk. Pharmacologic inhibition of ANGPTL3 with monoclonal antibodies and RNA-based therapies reduces triglycerides, remnant cholesterol, low-density lipoprotein cholesterol (LDL-C), and apolipoprotein B (apoB) through mechanisms predominantly independent of the LDL receptor. Clinical trials with ANGPTL3 inhibitors have demonstrated marked LDL-C reductions in patients with homozygous familial hypercholesterolemia (HoFH), as well as broad lipid-lowering effects in patients with mixed dyslipidemia. Emerging strategies targeting the ANGPTL3/8 complex and ANGPTL4 further refine lipid-lowering effects, while early genome-editing data suggest the potential for durable ANGPTL3 suppression. Modulation of the ANGPTL-lipoprotein lipase axis is a novel strategy to address residual atherosclerotic risk beyond traditional LDL receptor-dependent therapies. ANGPTL3 inhibitors have been practice-changing in HoFH, and more broadly, ANGPTL-directed therapies hold promise for patients with mixed dyslipidemia to mitigate cardiovascular risk.
Insights
Targeting the angiopoietin-like protein (ANGPTL) 3-4-8 axis offers a novel approach to lipid metabolism and cardiovascular risk reduction. ANGPTL3 inhibition shows significant promise for managing dyslipidemia, particularly in familial hypercholesterolemia.
Area of Science:
- Cardiovascular Medicine
- Metabolic Disorders
- Pharmacology
Background:
- The angiopoietin-like protein (ANGPTL) 3-4-8 axis is a key regulator of lipoprotein lipase and lipid metabolism.
- Dyslipidemia contributes significantly to cardiovascular disease risk.
Purpose of the Study:
- To review the mechanistic basis of ANGPTL pathway modulation.
- To explore therapeutic implications for cardiovascular risk reduction in dyslipidemia.
Main Methods:
- Review of genetic studies and clinical trials involving ANGPTL pathway modulation.
- Examination of pharmacologic inhibition strategies (monoclonal antibodies, RNA-based therapies).
Main Results:
- Loss-of-function variants in ANGPTL3/4 correlate with lower triglycerides and reduced coronary artery disease risk.
- ANGPTL3 inhibition effectively reduces triglycerides, remnant cholesterol, LDL-C, and apoB, largely independent of the LDL receptor.
- ANGPTL3 inhibitors have shown significant LDL-C reductions in homozygous familial hypercholesterolemia and mixed dyslipidemia.
Conclusions:
- Modulating the ANGPTL-lipoprotein lipase axis is a novel strategy for addressing residual atherosclerotic risk.
- ANGPTL-directed therapies offer promising cardiovascular risk mitigation for patients with dyslipidemia, including those with HoFH.
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