Cited by 11Lipid metabolism and disordersVirus-based gene therapy researchRNA Interference and Gene Delivery

AAV1-LPLS447X gene therapy reduces hypertriglyceridemia in apoE2 knock in mice

Rip, Jaap, van Dijk, Ko Willems, Sierts, Jeroen A., Kastelein, John J.P., Twisk, Jaap, Kuivenhoven, Jan Albert·2006·Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids

Abstract

Unlabelled Intramuscular (IM) application of adeno-associated virus serotype 1 (AAV1) for the delivery of human lipoprotein lipase (hLPL) was previously shown efficacious in mice with chylomicronemia. The current study addresses whether AAV1-LPL(S447X) can reduce elevated triglyceride (TG) levels in mice with attenuated clearance of TG-rich remnant particles.Methods Female mice, expressing human apoE2 but deficient for endogenous apoE (apoE2KI) received IM injections of AAV1-LPL(S447X) (n=6; 8 x 10(12) gc/kg; 4-sites) or PBS (n=5). Following lipid monitoring, the mice were challenged with intravenous Intralipid injections, and sacrificed 3 months after treatment.Results In the mice that received LPL gene therapy, a marked increase of post-heparin hLPL protein levels (averaging 517+/-277 ng/mL vs. 4+/-3 ng/mL in apoE2KI-untreated) induced 20% reductions of fasting plasma TG levels (p<0.05). This was accompanied by two-fold increased TG clearance rates after Intralipid administration at 6 weeks after treatment (p<0.05). Post-mortem analyses revealed increased levels of TG (2-fold, p<0.005) and cholesterol (1.7-fold, p<0.001) in the treated muscles.Conclusions IM application of AAV1-LPL(S447X) is effective in reducing TG levels in a mouse model for type III dyslipidemia. Thus, hypertriglyceridemia caused by attenuated uptake of TG-rich lipoproteins can be alleviated by increasing lipolytic function of the skeletal muscle tissue.

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Crossref · 10.1016/j.bbalip.2006.08.008

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  • After alipogene tiparvovec, TG drifted back to baseline levels within 6 months, although a few exceptional cases experienced sustained benefits.

    “Unfortunately, TG drifted back to baseline levels within 6 months, although a few exceptional cases experienced sustained benefits.84–87”

    From Clinical review on triglycerides (2020) · cites this paper as [86]

  • Spinal anaesthesia was needed for intramuscular injections of the adeno-associated virus subtype 1 vector carrying hyperfunctional LPL p.S447X; TG normalized within 12 weeks.

    “Spinal anaesthesia was needed for intramuscular injections of the adeno-associated virus subtype 1 vector carrying hyperfunctional LPL p.S447X; TG normalized within 12 weeks.84–86”

    From Clinical review on triglycerides (2020) · cites this paper as [86]

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Authors
Rip, J., van Dijk, K. W., Sierts, J. A., Kastelein, J. J. P., Twisk, J., & Kuivenhoven, J. A.
Affiliations
Amsterdam UMC Location University of Amsterdam (NL)
Venue
Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids
Publisher
Elsevier BV
Published
2006-10
Volume
1761
Issue
10
Pages
1163-1168
ISSN
1388-1981 (ISSN-L)
OpenAlex
W2037618939
Cited by
11
References
24
Citations by year
2022: 2 · 2019: 2 · 2017: 1 · 2015: 2 · 2014: 1
FWCI
0.00
Type
journal article
Language
en
Open access
closed
Locations
  • Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids (publishedVersion)
  • PubMed (publishedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion)
  • Pure Amsterdam UMC (submittedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
Keywords
lipoprotein lipase, hypertriglyceridemia, triglyceride-rich lipoproteins, triglyceride clearance, intramuscular injection
MeSH terms
Dependovirus, Animals, Female, Genetic Vectors, Humans, Injections, Intramuscular, Lipids, Lipoprotein Lipase, Mice, Transgenic, Muscles, Triglycerides, Hypertriglyceridemia, Genetic Therapy, Mice, Apolipoprotein E2

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