Journal: Analytical Cellular Pathology (Amsterdam)

Article Title: HDAC4 Promotes Cancer Stemness in Nonsmall Cell Lung Cancer by Upregulating SLC38A2 Expression via HIF‐1α to Enhance Glutamine Metabolism

doi: 10.1155/ancp/2525721

Figure Lengend Snippet: Knocking down HDAC4 inhibits glutamine metabolism in A549 cells. (A) Glutamine uptake levels in A549 cells. (B) Glutamate production levels in A549 cells. (C) α‐Ketoglutarate production levels in A549 cells. (D) Measurement of GLS activity in A549 cells. (E) DCFH‐DA staining was used to measure the level of ROS in cells. (F) A kit was used to measure the GSH/GSSG ratio. (G) Western blotting was used to detect the expression of Nrf2, HO‐1, and NQO1. ∗∗ p < 0.01, ∗∗∗ p < 0.001. Data are presented as mean ± SD. All experiments were performed with three independent biological replicates. Statistical analysis was conducted using Student’s t ‐test for panels (A)‒(G). GLS, glutaminase; DCFH‐DA, 2 ′ ,7 ′ dichlorodihydrofluorescein diacetate; ROS, reactive oxygen species; GSH, reduced glutathione; GSSG, oxidized glutathione; Nrf2, nuclear factor erythroid 2 related factor 2; HO‐1, heme oxygenase 1; NQO1: NAD(P)H quinone dehydrogenase 1. The original, uncropped western blot images for Figure are provided in the Supporting Information.

Article Snippet: The membranes were blocked with 5% skim milk at room temperature for 1.5 h and incubated with primary antibodies against HDAC4 (1:1000, 17449‐1‐AP, Proteintech, USA), SLC38A2 (1:2000, 25928‐1‐AP, Proteintech, USA), HIF‐1α (1:1000, A26889, ABclonal, China), Nrf2 (1:1000, ab62352, Abcam, UK), HO‐1 (1:1000, 66743‐1‐Ig, Proteintech, USA), NQO1 (1:5000, 67240‐1‐Ig, Proteintech, USA), and β‐actin (1:1000, ab8227, Abcam, UK) at 4°C overnight.

Techniques: Activity Assay, Staining, Western Blot, Expressing, Analysis