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Biological Relevance of Fatty Acyl Heterogeneity to the Neural Membrane Dynamics of Rhesusmacaques during Normative Aging
Sin Man Lam, Gek Huey Chua, Xiao-Jiang Li, Bing Su and Guanghou Shui
Oncotarget
Abstract
Lipidomic analyses of the frontal cortex of Rhesus macaques across three selected age groups (young, sexually-mature, old) revealed that docosahexaenoic acids (DHAs) displayed notable and unique accretions in sexually-mature macaques for all phospholipid classes examined, which were not observable in all remaining polyunsaturated fatty acids (PUFAs) investigated. On the other hand, arachidonic acid (ARA) exhibited sharp attritions in the membrane lipidomes of sexually-mature macaques, a decline which was attenuated only for cardiolipins (CLs). DHA enrichment in phospholipids was lost in old macaques, with accompanying augmentations in very-long-chain sphingomyelins (VLC-SMs). Age-dependent alterations in membrane lipidomes point to a possibly complex temporal interplay between DHA-enriched membrane microdomains and SM-/cholesterol-rich rafts in neural membranes during normative aging. Lipid co-regulation data revealed an increasingly intense degree of co-regulation between membrane lipid classes with age, and suggest that reduction in CLs during normative brain aging may prompt alternative membrane lipid synthetic pathways driven by a compromised energy availability in the aging brain.
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论文编号: |
DOI:10.18632/oncotarget.11190 |
论文题目: |
Biological Relevance of Fatty Acyl Heterogeneity to the Neural Membrane Dynamics of Rhesusmacaques during Normative Aging |
英文论文题目: |
Biological Relevance of Fatty Acyl Heterogeneity to the Neural Membrane Dynamics of Rhesusmacaques during Normative Aging |
第一作者: |
Sin Man Lam, Gek Huey Chua, Xiao-Jiang Li, Bing Su and Guanghou Shui |
英文第一作者: |
Sin Man Lam, Gek Huey Chua, Xiao-Jiang Li, Bing Su and Guanghou Shui |
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2016-08-19 |
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摘要: |
Lipidomic analyses of the frontal cortex of Rhesus macaques across three selected age groups (young, sexually-mature, old) revealed that docosahexaenoic acids (DHAs) displayed notable and unique accretions in sexually-mature macaques for all phospholipid classes examined, which were not observable in all remaining polyunsaturated fatty acids (PUFAs) investigated. On the other hand, arachidonic acid (ARA) exhibited sharp attritions in the membrane lipidomes of sexually-mature macaques, a decline which was attenuated only for cardiolipins (CLs). DHA enrichment in phospholipids was lost in old macaques, with accompanying augmentations in very-long-chain sphingomyelins (VLC-SMs). Age-dependent alterations in membrane lipidomes point to a possibly complex temporal interplay between DHA-enriched membrane microdomains and SM-/cholesterol-rich rafts in neural membranes during normative aging. Lipid co-regulation data revealed an increasingly intense degree of co-regulation between membrane lipid classes with age, and suggest that reduction in CLs during normative brain aging may prompt alternative membrane lipid synthetic pathways driven by a compromised energy availability in the aging brain. |
英文摘要: |
Lipidomic analyses of the frontal cortex of Rhesus macaques across three selected age groups (young, sexually-mature, old) revealed that docosahexaenoic acids (DHAs) displayed notable and unique accretions in sexually-mature macaques for all phospholipid classes examined, which were not observable in all remaining polyunsaturated fatty acids (PUFAs) investigated. On the other hand, arachidonic acid (ARA) exhibited sharp attritions in the membrane lipidomes of sexually-mature macaques, a decline which was attenuated only for cardiolipins (CLs). DHA enrichment in phospholipids was lost in old macaques, with accompanying augmentations in very-long-chain sphingomyelins (VLC-SMs). Age-dependent alterations in membrane lipidomes point to a possibly complex temporal interplay between DHA-enriched membrane microdomains and SM-/cholesterol-rich rafts in neural membranes during normative aging. Lipid co-regulation data revealed an increasingly intense degree of co-regulation between membrane lipid classes with age, and suggest that reduction in CLs during normative brain aging may prompt alternative membrane lipid synthetic pathways driven by a compromised energy availability in the aging brain. |
刊物名称: |
Oncotarget |
英文刊物名称: |
Oncotarget |
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Sin Man Lam, Gek Huey Chua, Xiao-Jiang Li, Bing Su and Guanghou Shui. Biological Relevance of Fatty Acyl Heterogeneity to the Neural Membrane Dynamics of Rhesusmacaques during Normative Aging. Oncotarget. DOI:10.18632/oncotarget.11190 |
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