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
作者:
Irvine N
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.
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DOI:
--
发表时间:
2003
期刊:
Prostaglandins, Leukotrienes and Essential Fatty Acids
影响因子:
--
作者:
G. Burdge;S. Wootton
通讯作者:
S. Wootton
影响因子:
3.8
作者:
Juan P. Infante;V. Huszagh
通讯作者:
V. Huszagh
DOI:
10.1016/s0021-9258(18)54882-1
发表时间:
1991-10
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
A. Voss;M. Reinhart;S. Sankarappa;H. Sprecher
通讯作者:
A. Voss;M. Reinhart;S. Sankarappa;H. Sprecher
影响因子:
1.9
作者:
Yukihiro Tomita;Y. Ando
通讯作者:
Y. Ando
DOI:
--
发表时间:
1990
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
A. Anel;J. Naval;B. González;J. M. Torres;Z. Mishal;J. Uriel;A. Piñeiro
通讯作者:
A. Piñeiro