Research Article

Prunus mume Seed Exhibits Inhibitory Effect on Skin Senescence via SIRT1 and MMP-1 Regulation

Figure 5

Detection of gene expression of SIRTs and MMPs in mouse skin tissues using reverse transcription-polymerase chain reaction (RT-PCR) and western blots. Mouse back skin tissues were isolated after undergoing ultraviolet (UV) irradiation 20 times. (a) RNA was isolated from skin tissue using TRIzol reagent, and RT-PCR was performed to detect RNA gene expression of SIRTs and MMPs. (b, c) Tissue lysate (0.1 mg) was loaded for western blots. Band intensities were calculated using the ChemiDoc XRS+ Image Lab software (Bio-Rad). Results are shown as the . # compared with the UV-nonirradiated group. compared with the UV-irradiated group. PmRS: Prunus mume ripe seed. Results of RT-PCR and western blots are shown as a classical set of 3 independent experiments.
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