دورية أكاديمية
Brain Research Bulletin / Ether lipid transfer across the blood-brain and placental barriers does not improve by inactivation of the most abundant ABC transporters
| العنوان: | Brain Research Bulletin / Ether lipid transfer across the blood-brain and placental barriers does not improve by inactivation of the most abundant ABC transporters |
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| المؤلفون: | Berger, Johannes, Dorninger, Fabian, Vaz, Frédéric M., Waterham, Hans R., Van Klinken, Jan B., Zeitler, Gerhard, Forss-Petter, Sonja, Wiesinger, Christoph |
| بيانات النشر: | Elsevier |
| سنة النشر: | 2022 |
| المجموعة: | MedUni Vienna ePub (Medzinische Universität Wien) |
| مصطلحات موضوعية: | Plasmalogen, Peroxisome, ATP-binding cassette transporter, Precursor supplementation, Blood-brain barrier, Alzheimer’s disease |
| جغرافية الموضوع: | UMW:14527 |
| الوصف: | Phospholipid transport from the periphery to the brain is an understudied topic. When certain lipid species are deficient due to impaired synthesis, though, transfer across the blood-brain barrier is essential for replenishing lipids in the brain. For example, the deficiency in plasmalogens, the most abundant ether lipids in mammals, has detrimental effects on the brain, which is a major issue in inherited peroxisomal disorders but also contributes to more common disorders like Alzheimer’s disease. Oral administration of alkylglycerols like batyl alcohol, which carry a pre-formed ether bond, enables replenishment of ether lipids in various peripheral tissues. However, plasmalogen deficiency in the brain cannot be overcome by this approach. Here, we tried to increase cerebral plasmalogen uptake by modulating the efflux transport across the blood-brain barrier. We hypothesized, based on previous literature, that at least some ether lipid species readily enter endothelial cells of the barrier through the transporter MFSD2A but are re-exported by ATP-binding cassette (ABC) transporters. By crossbreeding Mdr1a-/-/Mdr1b-/-/Bcrp-/- and ether lipid-deficient Gnpat-/- mice as well as pharmacological inhibition with MK-571 to inactivate the major ABC transporters at the blood-brain barrier, we evaluated the potential of combined ABC transporter inhibition and oral batyl alcohol administration for the treatment of plasmalogen deficiency. We found that even in the absence of the most abundant ABC transporters, batyl alcohol supplementation did not restore plasmalogen levels in the brain, despite the presence of a wide spectrum of ether lipid subspecies in the plasma as demonstrated by lipidomic analysis. Surprisingly, batyl alcohol treatment of pregnant Gnpat+/- dams had beneficial effects on the plasmalogen levels of Gnpat-/- offspring with defective ether lipid biosynthesis, independently of ABC transporter status at the placental barrier. Our results underline the autonomy of brain lipid homeostasis and indicate that ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | text/html |
| اللغة: | English |
| تدمد: | 1873-2747 |
| العلاقة: | vignette : https://repositorium.meduniwien.ac.at/titlepage/urn/urn:nbn:at:at-ubmuw:3-61755/128Test; urn:nbn:at:at-ubmuw:3-61755; https://resolver.obvsg.at/urn:nbn:at:at-ubmuw:3-61755Test; local:99146996149003331; system:AC16662401 |
| DOI: | 10.1016/j.brainresbull.2022.08.006 |
| الإتاحة: | https://doi.org/10.1016/j.brainresbull.2022.08.006Test https://resolver.obvsg.at/urn:nbn:at:at-ubmuw:3-61755Test |
| حقوق: | cc-by_4 |
| رقم الانضمام: | edsbas.F7D7830A |
| قاعدة البيانات: | BASE |
| تدمد: | 18732747 |
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| DOI: | 10.1016/j.brainresbull.2022.08.006 |