Oleate ameliorates palmitate-induced impairment of differentiative capacity in C2C12 myoblast cells.

Abstract:

:A common observation in metabolic disorders and aging is the elevation of free fatty acids, which can form ectopic fat deposition and result in lipotoxicity. Ectopic fat deposition of skeletal muscle has been recognized as an important component of aging, frailty and sarcopenia. Previous studies have suggested that lipotoxicity caused by free fatty acids mainly stemmed from saturated fatty acids and decreased unsaturated/ saturated fatty acid ratio in serum are also observed among metabolic disorder patients. However, the different effects of saturated fatty acids and unsaturated fatty acids on skeletal muscle are not fully differentiative capacity of C2C12 myoblasts by affecting Pax7, MyoD and MyoG, which are master regulators of lineage specification and the myogenic program. Then, oleate (OA), a monounsaturated fatty acid, were added to culture medium together with PA. Results showed that OA could ameliorate the impairment of differentiative capacity in C2C12 myoblast cells. In addition, we found PI3K/Akt signaling pathway played an important role during the process by RNA-sequencing and bioinformatics analysis. The positive effect of OA on myoblast differentiative capacity disappeared if PI3K inhibitor LY294002 was added. In conclusion, our study showed that PA could destroy differentiative capacity of C2C12 myoblasts by affecting the expression of Pax7, MyoD and MyoG, and OA could improve this impairment through PI3K /Akt signaling pathway.

journal_name

Stem Cells Dev

authors

Xue M,Zhang F,Ji X,Yu H,Jiang X,Qiu Y,Yu J,Chen J,Yang F,Bao Z

doi

10.1089/scd.2020.0168

subject

Has Abstract

pub_date

2021-01-11 00:00:00

eissn

1547-3287

issn

1557-8534

pub_type

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