Journal: Research
Article Title: Lymph Node Metastasis-Associated Spatiotemporal Mapping of the TFF3-Linked Niche in Breast Cancer: Integrating Radiogenomic Signatures with Immune-Ecosystem Remodeling
doi: 10.34133/research.1016
Figure Lengend Snippet: 6-MP inhibited the proliferation and LNM of breast cancer (BRCA) cells in vitro. (A) The eXtreme Sum (XSum) algorithm identified potential small molecules and drugs that could correct biological effects caused by dysregulated TFF3 gene expression in BRCA, based on data from the Connectivity Map (cMAP) database. Each scatter point represents a distinct compound, with the y axis showing similarity scores for 1,288 compounds, derived by comparing gene-related features using the XSum method. Compounds with lower scores may inhibit gene-mediated oncogenic effects. (B) qRT-PCR was performed to assess the messenger RNA (mRNA) expression levels of TFF3 after treatment with 5 μM/10 μM 6-MP. (C to E) CCK-8, colony formation, and EdU assays demonstrated the proliferative capacity of MDA-MB-468 cells following treatment with 5 μM/10 μM 6-MP and TFF3 knockdown. (F) Transwell assays assessed the mobility of MDA-MB-468 cells following treatment with 5 μM/10 μM 6-MP and TFF3 knockdown (scale = 200 μm). (G) HLEC tube formation assays demonstrated the lymphangiogenic function of MDA-MB-468 cells following treatment with 5 μM/10 μM 6-MP and TFF3 knockdown (scale = 200 μm). (H to K) The bar charts illustrate the differences observed in colony formation (H), EdU (I), Transwell assays (J), and HLEC tube formation assays (K). (L and M) The levels of EMT proteins were examined following treatment with 5 μM/10 μM 6-MP and TFF3 knockdown by Western blot (L). p-ERK1/2, p-p38, p-JNK, and total ERK1/2, p38, and JNK were analyzed by Western blot (M). (N and O) Rescue experiment validating the functional specificity of 6-MP targeting TFF3 . Migration assays demonstrated that 6-MP inhibited the migration of breast cancer cells, while TFF3 overexpression partially reversed this inhibitory effect (N). The reversal of 6-MP’s action by TFF3 overexpression supports the functional specificity of the 6-MP– TFF3 interaction (O). * P < 0.05; ** P < 0.01; *** P < 0.001.
Article Snippet: The antibodies used were rabbit anti-glyceraldehyde-3-phosphate dehydrogenase (1:5,000, Proteintech, China), rabbit anti-TFF3 (1:500, HUABIO, China), rabbit anti-MMP2 (1:1,000, Proteintech, China), rabbit anti-N-cadherin (1:1,000, Zenbio, China), rabbit anti-ERK1/2 (1:2,000, Proteintech, China), rabbit anti-p-ERK1/2 (1:1,000, Proteintech, China), rabbit anti-p38 (1:1,000, Proteintech, China), rabbit anti-p-p38 (1:1,000, Proteintech, China), mouse anti-JNK (1:2,000, Proteintech, China), and rabbit anti-p-JNK1/2/3 (1:500, Cohesion, China).
Techniques: In Vitro, Gene Expression, Derivative Assay, Quantitative RT-PCR, Expressing, CCK-8 Assay, Knockdown, Western Blot, Functional Assay, Migration, Over Expression