Thematic review series: Glycerolipids. DGAT enzymes and triacylglycerol biosynthesis
Open accessAbstract
Triacylglycerols (triglycerides) (TGs) are the major storage molecules of metabolic energy and FAs in most living organisms. Excessive accumulation of TGs, however, is associated with human diseases, such as obesity, diabetes mellitus, and steatohepatitis. The final and the only committed step in the biosynthesis of TGs is catalyzed by acyl-CoA:diacylglycerol acyltransferase (DGAT) enzymes. The genes encoding two DGAT enzymes, DGAT1 and DGAT2, were identified in the past decade, and the use of molecular tools, including mice deficient in either enzyme, has shed light on their functions. Although DGAT enzymes are involved in TG synthesis, they have distinct protein sequences and differ in their biochemical, cellular, and physiological functions. Both enzymes may be useful as therapeutic targets for diseases. Here we review the current knowledge of DGAT enzymes, focusing on new advances since the cloning of their genes, including possible roles in human health and diseases.
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The conversion of FFAs to triacylglycerols can occur via two major pathways: the glycerol phosphatase pathway or the monoacylglycerol pathway.
“The conversion of FFAs to TGs can occur via two major pathways involving several intermediates: 1) the glycerol phosphatase pathway or 2) the monoacylglycerol pathway”
From Amyloid-β induces lipid droplet-mediated microglial dysfunction via the enzyme DGAT2 in Alzheimer’s disease (2025) · cites this paper as [49]
Unlike LXR, ACSL1 and other upstream acyltransferases, the activity of DGAT2 is the final rate-limiting step for the biosynthesis of triacylglycerols from diacylglycerols.
“Unlike LXR, ACSL1 and other upstream acyltransferases, (such as GPAT and AGPAT, that are involved in the glycerol phosphatase pathway), the activity of DGAT2 is the final rate-limiting step for the biosynthesis of TGs from DGs.49”
From Amyloid-β induces lipid droplet-mediated microglial dysfunction via the enzyme DGAT2 in Alzheimer’s disease (2025) · cites this paper as [49]
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- Authors
- Yen, C.-L. E., Stone, S. J., Koliwad, S., Harris, C., & Farese, R. V.
- Affiliations
- University of Wisconsin–Madison (US)
- University of Saskatchewan (CA)
- University of California, San Francisco (US)
- Corresponding author
- Farese, Robert V.
- Venue
- Journal of Lipid Research
- Publisher
- Elsevier BV
- Published
- 2008-11
- Volume
- 49
- Issue
- 11
- Pages
- 2283-2301
- ISSN
- 0022-2275 (ISSN-L)
- PMC
- PMC3837458
- OpenAlex
- W2011185005
- Cited by
- 1,105
- References
- 11
- Citations by year
- 2026: 60 · 2025: 57 · 2024: 75 · 2023: 63 · 2022: 68 · 2021: 70 · 2020: 87 · 2019: 69 · 2018: 71 · 2017: 53 · 2016: 64 · 2015: 51 · 2014: 53 · 2013: 67 · 2012: 69
- FWCI
- 3.04
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Journal of Lipid Research (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Institute of Diabetes and Digestive and Kidney Diseases (DK-56084, R01DK056084, R56DK056084)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
- Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
- Keywords
- diacylglycerol acyltransferase, triglyceride synthesis, DGAT1, DGAT2, glycerolipids, fat deposition, obesity, diabetes mellitus, steatohepatitis, therapeutic target, knockout mice
- MeSH terms
- Animals, Glycerol, Humans, Isoenzymes, Triglycerides, Lipogenesis, Diacylglycerol O-Acyltransferase
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