human breast cancer tissue array  (Novus Biologicals)

Journal: Research

Article Title: ARTS Confers Chemoresistance of Breast Cancer by Inducing Apoptosis-Dependent Autophagy via Livin–MDM2–p53 Pathway

doi: 10.34133/research.1086

Figure Lengend Snippet: ARTS is predominantly expressed in resistant breast cancer tissues and promotes chemoresistance in breast cancer cells. (A) Screening workflow for chemoresistance-related genes in breast cancer. DEGs from GSE288073 are shown in a volcano plot, followed by overlap with apoptosis-related and mitochondria-related gene sets, yielding 12 DEGs; ARTS was prioritized and evaluated by Kaplan–Meier survival analysis for postchemotherapy prognosis. FPKM, fragments per kilobase of transcript per million mapped reads. (B) Representative hematoxylin and eosin (H&E) and IHC images of ARTS in paired pre- and post-NAC samples from NAC-sensitive and NAC-resistant patients. The black arrow indicates a residual small cluster of tumor cells. Scale bar, 50 μm. (C) Association of ARTS protein with MPG score and Ki-67 in pre- and post-NAC samples. (D) Kaplan–Meier analyses of OS and RFS stratified by ARTS protein (low versus high). (E and F) MTT and (G and H) colony formation assays in sh-Ctrl versus sh-ARTS MDA-MB-231 and Flag versus Flag–ARTS MCF-7 cells under the indicated treatments. * P < 0.05; *** P < 0.001. ns, not significant.

Article Snippet: Human breast cancer tissue samples were obtained from the First Affiliated Hospital of Anhui Medical University (Hefei, Anhui, China).

Techniques:

Journal: Communications Biology

Article Title: Non-redundant roles of the phosphoinositide phosphatases PTEN and PIPP in PI3K/AKT signaling in breast cancer

doi: 10.1038/s42003-025-09364-2

Figure Lengend Snippet: A Normalized PTEN mRNA expression was determined by qPCR using TissueScan Breast Cancer Arrays I-IV with PTEN and β-actin primers. The data are displayed as box and whiskers on a log scale. The center line indicates the median; the box extends from the 25th to 75th percentiles and the whiskers extend from the minimum to maximum values. PTEN mRNA expression was correlated with ER (140 cases), p values were determined using an unpaired t test. B PIPP mRNA expression was correlated with normal versus low PTEN mRNA expression in TissueScan Breast Cancer Arrays I-IV (Normal PTEN expression n = 82; low PTEN mRNA (2-fold reduction relative to normal breast tissue) n = 92). The data are displayed as box and whiskers on a log scale. The center line indicates the median; the box extends from the 25th to 75th percentiles, and the whiskers extend from the minimum to maximum values. C Breast cancer cases in TissueScan Breast Cancer Arrays I-IV were scored for normal ( PIPP + /PTEN + ) versus low ( PIPP-/PTEN- ) PIPP and PTEN mRNA expression in ER+ and ER– tumors (170 cases). Significance was determined using a two-sided Fisher’s exact test (p < 0.001). D Breast cancer cases in TissueScan Breast Cancer Arrays I-IV were scored for normal versus low PIPP and PTEN mRNA expression relative to breast cancer subtype (133 cases). E PIPP mRNA expression was correlated with PTEN alterations in the METABRIC dataset. PIPP expression was correlated with unaltered PTEN versus altered PTEN (mutated and/or low expression). The data are displayed as box and whiskers. The center line indicates the median; the box extends from the 25th to 75th percentiles, and the whiskers extend from the minimum to maximum values. p-values were determined using an unpaired t-test. F – J Breast cancer cases in the METABRIC dataset were scored for reduced PIPP expression and/or PTEN expression (Z-score threshold of <1.5 relative to all breast cancers in the cohort) and/or PTEN mutation and correlated with ER ( F ), PR ( G ), HER2 ( H ), breast cancer subtype ( I ) or tumor grade ( J ). K Overall survival analysis in breast cancer patients using the METABRIC dataset. Samples were dichotomized for high PIPP/PTEN gene expression (>40th percentile) versus low PIPP/PTEN gene expression (<40th percentile). Statistical significance for 10-year survival was determined using a log-rank test. L Disease-free survival analysis in breast cancer patients using the TCGA Pan Cancer dataset. Samples were dichotomized for high PIPP/PTEN gene expression (>40th percentile) versus low PIPP/PTEN gene expression (<40th percentile). Statistical significance was determined using a log-rank test.

Article Snippet: As reported, PIPP ( INPP5J ) mRNA expression was reduced in ER– relative to ER+ breast tumors based on analysis of 176 human cancers and 16 normal, adjacent breast tissues using Tissue Scan Breast Cancer cDNA array I-IV (OriGene) .

Techniques: Expressing, Mutagenesis, Gene Expression

Journal: RNA Biology

Article Title: E2-regulated transcriptome complexity revealed by long-read direct RNA sequencing: from isoform discovery to truncated proteins

doi: 10.1080/15476286.2025.2563860

Figure Lengend Snippet: A. Analysis of single-cell RNA sequencing data of GSE75688 verified the expression of IPA isoforms of TLE1 and GREB1 in breast cancer cells representing subtypes, B. GEO2R expression data for TLE1 -IPA (228284_at probe set) and FL isoforms (203221_at probe set) in NCI-60 cancer cell line data ( GSE32474 , GPL570 ). Red bars indicate breast cancer cell lines, C. Probe sets specific to IPA (228284_at) and FL (203221_at) in control cells compared with ER knockdown (KD) MCF7 cells ( GSE27473 ) (*** p < 0.001, students t-test), D. IPA/FL ratios were determined in breast cancer cell lines by RT-qPCR ( n = 3 technical replicates). IPA and FL expression levels were normalized to RPLP0. IPA/FL ratio was normalized to normal breast cDNA sample (from OriGene TissueScan cDNA tissue array) (*** p < 0.001, one-way ANOVA), E. TCGA breast cancer dataset showing a positive correlation between the levels of the FL and IPA isoforms of TLE1 , F. Kaplan-Meier relapse-free survival curves comparing high- and low-ratio of ENST00000376463.2/ENST00000376499.7 (IPA/FL) TLE1 in TCGA LumA breast cancers (BRCA). High-ratio patients (red) showed better relapse-free survival compared to low-ratio patients (black) (HR = 0.35, log-rank p = 0.042), G. Kaplan–Meier relapse-free survival analysis of LumA breast cancers, classified according to the St. Gallen criteria, was performed using microarray data from the KM-plotter database. Patients were stratified based on the expression ratio of the 228284_at probe set (IPA isoform) to the 203221_at probe set (FL isoform). High-ratio group (red) exhibited better relapse-free survival compared to the low-ratio group (black) (HR = 0.65, log-rank p = 0.0024). Patient numbers and at-risk counts are displayed on the plot.

Article Snippet: IPA/FL ratio was normalized to normal breast cDNA sample (from OriGene TissueScan cDNA tissue array) (*** p < 0.001, one-way ANOVA), E. TCGA breast cancer dataset showing a positive correlation between the levels of the FL and IPA isoforms of TLE1 , F. Kaplan-Meier relapse-free survival curves comparing high- and low-ratio of ENST00000376463.2/ENST00000376499.7 (IPA/FL) TLE1 in TCGA LumA breast cancers (BRCA).

Techniques: RNA Sequencing, Expressing, Control, Knockdown, Quantitative RT-PCR, Microarray