Journal: Oncology Reports

Article Title: Quercetin reduces expression of ATP-binding cassette transporters by regulating the PTEN/PI3K/AKT signaling pathway in breast cancer cells

doi: 10.3892/or.2026.9068

Figure Lengend Snippet: Effects of Que on cell viability, mRNA levels, apoptosis and protein expression in MCF-7 cells. (A) Cell viability of MCF-7 cells treated with the indicated concentrations of Que for 24 and 48 h, as determined by the Cell Cycle Kit-8 assay. (B) mRNA expression levels of ABCB1, ABCC2 and ABCG2 following Que treatment. (C) Representative western blotting images, (D) protein expression levels of ABCB1, ABCC2 and ABCG2, and (E) Bax, Bcl-2, and cleaved caspase-3 were assessed by western blotting. (F) Representative images of flow cytometry and (G) apoptosis rate was analyzed by flow cytometry after Annexin V-FITC/PI staining. Data are presented as the mean ± SEM of at least three independent experiments. Statistical significance was determined by one/two-way ANOVA followed by Bonferroni's post hoc test for multiple comparisons. *P<0.05, **P<0.01 compared with the control group, ## P<0.01 compared with the Que (24 h) group. Que, Quercetin; Ctrl, control.

Article Snippet: Primary antibodies included PTEN (1:5,000; cat. no. ab267787), Bcl-2 (1:6,000; cat. no. ab196495), Bax (1:6,000; cat. no. ab32503) and ABCG2 (1:5,000; cat. no. ab108312) from Abcam; p-PI3K (p85) (1:2,000; cat. no. 4228), p-AKT (Ser473) (1:2,000; cat. no. 4060), cleaved caspase-3 (1:5,000; cat. no. 9664), ABCC2 (1:1,000; cat. no. 12559) and ABCB1 (1:2,000; cat. no. 13342) from Cell Signaling Technology, Inc.; and GAPDH (1:12,000; cat. no. 60004-1-Ig), PI3K (1:3,000; cat. no. 20584-1-AP), AKT (1:3,000; 10176-2-AP), Caspase-3 (1:3,000; 19677-1-AP) and β-actin (1:10,000; cat. no. 66009-1-Ig) from Proteintech Group, Inc. After incubation with HRP-conjugated secondary antibodies (1:10,000; cat. no. SA00001-1 and SA00001-2; Proteintech Group, Inc.), protein bands were visualized using an ECL reagent (Beijing Lanbolide Trading Co., Ltd.) and imaged with a ChemiDoc XRS+ system (Bio-Rad Laboratories, Inc.).

Techniques: Expressing, Western Blot, Flow Cytometry, Staining, Control

Journal: Oncology Reports

Article Title: Quercetin reduces expression of ATP-binding cassette transporters by regulating the PTEN/PI3K/AKT signaling pathway in breast cancer cells

doi: 10.3892/or.2026.9068

Figure Lengend Snippet: Effects of PTEN overexpression in MCF-7 cells. mRNA expression levels of (A) PTEN, (B) ABCB1, ABCC2, ABCG2, Bax and Bcl-2 following PTEN overexpression. (C) Representative western blotting images and protein expression levels of (D) ABCB1, ABCC2, ABCG2, (E) PTEN, Bax and Bcl-2 following PTEN overexpression. The results are presented as the mean ± SEM of at least three independent experiments and analyzed using one-way ANOVA followed by Bonferroni's post hoc test. *P<0.05, **P<0.01 compared with the Plvx-con group.

Article Snippet: Primary antibodies included PTEN (1:5,000; cat. no. ab267787), Bcl-2 (1:6,000; cat. no. ab196495), Bax (1:6,000; cat. no. ab32503) and ABCG2 (1:5,000; cat. no. ab108312) from Abcam; p-PI3K (p85) (1:2,000; cat. no. 4228), p-AKT (Ser473) (1:2,000; cat. no. 4060), cleaved caspase-3 (1:5,000; cat. no. 9664), ABCC2 (1:1,000; cat. no. 12559) and ABCB1 (1:2,000; cat. no. 13342) from Cell Signaling Technology, Inc.; and GAPDH (1:12,000; cat. no. 60004-1-Ig), PI3K (1:3,000; cat. no. 20584-1-AP), AKT (1:3,000; 10176-2-AP), Caspase-3 (1:3,000; 19677-1-AP) and β-actin (1:10,000; cat. no. 66009-1-Ig) from Proteintech Group, Inc. After incubation with HRP-conjugated secondary antibodies (1:10,000; cat. no. SA00001-1 and SA00001-2; Proteintech Group, Inc.), protein bands were visualized using an ECL reagent (Beijing Lanbolide Trading Co., Ltd.) and imaged with a ChemiDoc XRS+ system (Bio-Rad Laboratories, Inc.).

Techniques: Over Expression, Expressing, Western Blot

Journal: Oncology Reports

Article Title: Quercetin reduces expression of ATP-binding cassette transporters by regulating the PTEN/PI3K/AKT signaling pathway in breast cancer cells

doi: 10.3892/or.2026.9068

Figure Lengend Snippet: Effects of combined PTEN overexpression and Que treatment on ABC transporters and the PI3K/AKT signaling pathway in MCF-7 cells. mRNA expression levels of (A) ABCB1, (B) ABCC2 (C) and ABCG2 in different treatment groups. (D) Representative images and (E) protein expression levels of ABCB1, ABCC2, ABCG2, (F) p-PI3K, and (G) p-AKT were evaluated by western blotting. The results are presented as the mean ± SEM of at least three independent experiments and analyzed using one-way ANOVA followed by Bonferroni's post hoc test. *P<0.05, **P<0.01, ***P<0.001 compared with the Plvx-con group. Que, Quercetin; con, control; p, phosphorylated.

Article Snippet: Primary antibodies included PTEN (1:5,000; cat. no. ab267787), Bcl-2 (1:6,000; cat. no. ab196495), Bax (1:6,000; cat. no. ab32503) and ABCG2 (1:5,000; cat. no. ab108312) from Abcam; p-PI3K (p85) (1:2,000; cat. no. 4228), p-AKT (Ser473) (1:2,000; cat. no. 4060), cleaved caspase-3 (1:5,000; cat. no. 9664), ABCC2 (1:1,000; cat. no. 12559) and ABCB1 (1:2,000; cat. no. 13342) from Cell Signaling Technology, Inc.; and GAPDH (1:12,000; cat. no. 60004-1-Ig), PI3K (1:3,000; cat. no. 20584-1-AP), AKT (1:3,000; 10176-2-AP), Caspase-3 (1:3,000; 19677-1-AP) and β-actin (1:10,000; cat. no. 66009-1-Ig) from Proteintech Group, Inc. After incubation with HRP-conjugated secondary antibodies (1:10,000; cat. no. SA00001-1 and SA00001-2; Proteintech Group, Inc.), protein bands were visualized using an ECL reagent (Beijing Lanbolide Trading Co., Ltd.) and imaged with a ChemiDoc XRS+ system (Bio-Rad Laboratories, Inc.).

Techniques: Over Expression, Expressing, Western Blot, Control

Journal: Oncology Reports

Article Title: Quercetin reduces expression of ATP-binding cassette transporters by regulating the PTEN/PI3K/AKT signaling pathway in breast cancer cells

doi: 10.3892/or.2026.9068

Figure Lengend Snippet: Effects of combined LY294002 and Que treatment on apoptosis and protein expression in MCF-7 cells. (A) Representative western blotting images and Protein expression levels of (B) ABCB1, ABCC2, ABCG2, (C) p-PI3K (D) PTEN, Bax, Bcl-2 and (E) p-AKT in different treatment groups. (F) mRNA expression levels of ABCB1, ABCC2, ABCG2, PTEN, Bax and Bcl-2 in different treatment groups. (G) Representative immunofluorescence images of ABCG2 expression (green). Nuclei were counterstained with DAPI (blue). Scale bar, 50 µm. (H) Representative flow cytometry images and (I) Apoptosis rate was analyzed by flow cytometry after Annexin V-FITC/PI staining. The results are presented as the mean ± SEM of at least three independent experiments and analyzed using two-way ANOVA followed by Bonferroni's post hoc test. *P<0.05, **P<0.01 compared with the control group; ## P<0.05 compared with the Que group. Que, Quercetin; Ctrl, control; p, phosphorylated.

Article Snippet: Primary antibodies included PTEN (1:5,000; cat. no. ab267787), Bcl-2 (1:6,000; cat. no. ab196495), Bax (1:6,000; cat. no. ab32503) and ABCG2 (1:5,000; cat. no. ab108312) from Abcam; p-PI3K (p85) (1:2,000; cat. no. 4228), p-AKT (Ser473) (1:2,000; cat. no. 4060), cleaved caspase-3 (1:5,000; cat. no. 9664), ABCC2 (1:1,000; cat. no. 12559) and ABCB1 (1:2,000; cat. no. 13342) from Cell Signaling Technology, Inc.; and GAPDH (1:12,000; cat. no. 60004-1-Ig), PI3K (1:3,000; cat. no. 20584-1-AP), AKT (1:3,000; 10176-2-AP), Caspase-3 (1:3,000; 19677-1-AP) and β-actin (1:10,000; cat. no. 66009-1-Ig) from Proteintech Group, Inc. After incubation with HRP-conjugated secondary antibodies (1:10,000; cat. no. SA00001-1 and SA00001-2; Proteintech Group, Inc.), protein bands were visualized using an ECL reagent (Beijing Lanbolide Trading Co., Ltd.) and imaged with a ChemiDoc XRS+ system (Bio-Rad Laboratories, Inc.).

Techniques: Expressing, Western Blot, Immunofluorescence, Flow Cytometry, Staining, Control