Exogenous tetracosahexaenoic acid modifies the fatty acid composition of human primary T lymphocytes and Jurkat T cell leukemia cells contingent on cell type

Exogenous tetracosahexaenoic acid modifies the fatty acid composition of human primary T lymphocytes and Jurkat T cell leukemia cells contingent on cell type
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外源二十四碳六烯酸改变人原代 T 淋巴细胞和 Jurkat T 细胞白血病细胞的脂肪酸组成,具体取决于细胞类型

DOI:
10.1002/lipd.12372
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发表时间:
2023
期刊:
影响因子:
1.9
通讯作者:
Irvine N
Irvine N
中科院分区:
医学4区
文献类型:
--
作者:
Irvine N

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二十四碳六烯酸(24:6ω-3)是哺乳动物中18:3ω-3转化为22:6ω-3的中间体。关于细胞是否可以同化和代谢外源性24:6ω-3的信息有限。本研究比较了24:6ω-3孵育对两种相关细胞类型(原代CD 3 +T淋巴细胞和Jurkat T细胞白血病)脂肪酸组成的影响,这两种细胞类型在多不饱和脂肪酸(PUFA)生物合成途径的完整性方面存在差异。当细胞与24:6 ω-3孵育时,仅在任一细胞类型中检测到24:6 ω-3。与24:6ω-3孵育在两种细胞类型中诱导了22:6ω-3量的类似增量,并改变了由T淋巴细胞活化诱导的稳态粘性适应脂肪酸组成。在Jurkat细胞中测试了与24:6ω-3相比用18:3ω-3孵育对22:6ω-3增量的影响,因为原代T细胞不能将18:3ω-3转化为22:6ω-3。用24:6ω-3孵育的Jurkat细胞的22:6ω-3含量的增量是用18:3ω-3孵育的细胞的19.5倍。在Jurkat细胞中,酰基辅酶A氧化酶siRNA敲低降低了22:6ω-3的量,并增加了24:6ω-3的量。这些发现表明,外源性24:6ω-3可以掺入原代人T淋巴细胞和Jurkat细胞中,并诱导脂肪酸组成的变化,这与其通过涉及过氧化物酶体β-氧化的机制转化为22:6ω-3一致,该机制独立于上游PUFA合成途径的完整性进行调节。另一个含义是,消耗24:6ω-3可能是实现20:5ω-3和22:6ω-3健康益处的有效替代手段。
Tetracosahexaenoic acid (24:6ω‐3) is an intermediate in the conversion of 18:3ω‐3 to 22:6ω‐3 in mammals. There is limited information about whether cells can assimilate and metabolize exogenous 24:6ω‐3. This study compared the effect of incubation with 24:6ω‐3 on the fatty acid composition of two related cell types, primary CD3+T lymphocytes and Jurkat T cell leukemia, which differ in the integrity of the polyunsaturated fatty acid (PUFA) biosynthesis pathway. 24:6ω‐3 was only detected in either cell type when cells were incubated with 24:6ω‐3. Incubation with 24:6ω‐3 induced similar increments in the amount of 22:6ω‐3 in both cell types and modified the homeoviscous adaptations fatty acid composition induced by activation of T lymphocytes. The effect of incubation with 18:3ω‐3 compared to 24:6ω‐3 on the increment in 22:6ω‐3 was tested in Jurkat cells because primary T cells cannot convert 18:3ω‐3 to 22:6ω‐3. The increment in the 22:6ω‐3 content of Jurkat cells incubated with 24:6ω‐3 was 19.5‐fold greater than that of cells incubated with 18:3ω‐3. Acyl‐coA oxidase siRNA knockdown decreased the amount of 22:6ω‐3 and increased the amount of 24:6ω‐3 in Jurkat cells. These findings show exogenous 24:6ω‐3 can be incorporated into primary human T lymphocytes and Jurkat cells and induces changes in fatty acid composition consistent with its conversion to 22:6ω‐3 via a mechanism involving peroxisomal β‐oxidation that is regulated independently from the integrity of the upstream PUFA synthesis pathway. One further implication is that consuming 24:6ω‐3 may be an effective alternative means of achieving health benefits attributed to 20:5ω‐3 and 22:6ω‐3.
男性和女性的α-亚麻酸转化为棕榈酸、棕榈油酸、硬脂酸和油酸。
DOI: --
发表时间: 2003
期刊: Prostaglandins, Leukotrienes and Essential Fatty Acids
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齐薇格综合征敲除小鼠模型挑战了二十二碳六烯酸 (22:6n-3) 生物合成中假定的过氧化物酶体 β-氧化作用。
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发表时间: 2001
影响因子: 3.8
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DOI: 10.1016/s0021-9258(18)54882-1
发表时间: 1991-10
期刊: The Journal of biological chemistry
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作者:
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发表时间: 2009
期刊: Fisheries Science
影响因子: 1.9
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Yukihiro Tomita;Y. Ando
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DOI: --
发表时间: 1990
期刊: Biochimica et Biophysica Acta
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