ArticleMolecular and cellular biochemistry2010
Arachidonic acid pools of rat kidney cell nuclei.
Article in Molecular and cellular biochemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed, 4 citations in OpenAlex.
- SEIPIN: A Key Factor for Nuclear Lipid Droplet Generation and Lipid Homeostasis.International journal of molecular sciences · 2020Review
- Article
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3 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
We have assessed that nuclear lipids from rat kidney cells are not only membrane components, but they are also found within the nucleus. The most abundant nuclear and endonuclear lipids have a high proportion of unsaturated fatty acids (n-6 series: arachidonic > linoleic), mainly esterified to PtdCho. Nuclear most abundant molecular species are 16:0-20:4, 16:0-18:2, 18:0-20:4, 18:0-18:2, and 16:0-18:1. Arachidonic acid is esterified at the sn-2 position of PtdCho: 16:0-20:4(25%), 18:0-20:4(15%), 18:2-20:4(3%), 18:1-20:4(2%). Exogenous [1-(14)C]20:4n-6-CoA is esterified in vitro in GP (glycerophospholipids) > > TAG and DAG. Five PtdCho molecular species were labeled: 16:0-20:4, 18:0-20:4, 18:1-20:4, 18:2-20:4, and 20:4-20:4. In conclusion, these results demonstrated that: (1) there is an important lipid pool within kidney cell nuclei; (2) main nuclear and endonuclear lipid pools were PtdCho molecular species which contained a high proportion of unsaturated fatty acids (20:4n-6 and 18:2n-6) esterified at sn-2 position and 16:0 esterified at sn-1 position; (3) kidney cell nuclei also contained the necessary enzymes to esterify exogenous 20:4n-6-CoA to glycerolipids and to GP; (4) exogenous 20:4n-6-CoA was esterified in five PtdCho molecular species with 20:4n-6 at the sn-2 position, although the most actively synthesized PtdCho contained 20:4n-6 at both the sn-1 and sn-2 positions of the molecule; (5) we can infer that by a remodeling process, the unsaturated fatty acids at the sn-1 position of PtdCho molecular species could be replaced by 16:0 and 18:0, and thus PtdCho would achieve the physiological profile characteristic of the organ.
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