This SuperSeries is composed of the SubSeries listed below.
Metaplastic breast carcinomas display genomic and transcriptomic heterogeneity [corrected]. .
Disease
View SamplesExpression profiling of metaplastic carcinoma of the breast
Metaplastic breast carcinomas display genomic and transcriptomic heterogeneity [corrected]. .
Disease
View SamplesRNA-SEQ of mutants B cell for IgH 3''RR and Emu Overall design: CD43- splenic B-cells from wt, Eµ-deficient or 3''RR deficient mice, non stimulated (NS) or stimulated (S) with 5mg/ml LPS.
E<sub>μ</sub> and 3'RR IgH enhancers show hierarchic unilateral dependence in mature B-cells.
No sample metadata fields
View SamplesThe IgH 3' regulatory region (3'RR) controls class switch recombination (CSR) and somatic hypermutation (SHM) in B cells. The mouse 3'RR contains four enhancer elements with hs1,2 flanked by inverted repeated sequences and the center of a 25-kb palindrome bounded by two hs3 enhancer inverted copies (hs3a and hs3b). hs4 lies downstream of the palindrome. Evolution maintained in mammals this unique palindromic arrangement suggesting that it is functionally significant. We report that deconstructing the palindromic IgH 3'RR strongly impacts its function even when enhancers are preserved. CSR and IgH transcription appear poorly dependent from the 3'RR architecture and are more or less preserved provided 3'RR enhancers are present. By contrast, an “architectural effect” significantly lowers VH germline transcription, AID recruitment and SHM. In conclusion, this work indicates that the IgH 3'RR does not simply pile up enhancer units but also optimally expose them into a functional architecture of crucial importance. Overall design: RNAseq analysis of B-cell splenocytes with (S=stimulated) or without (R=resting) LPS activation from wt, delta2leftPAL, and deltaIRIS mice.
Deciphering the importance of the palindromic architecture of the immunoglobulin heavy-chain 3' regulatory region.
Specimen part, Cell line, Subject
View SamplesExpression data from Breast cancer subtypes
Chronic oxidative stress promotes H2AX protein degradation and enhances chemosensitivity in breast cancer patients.
Disease, Cell line
View SamplesIn a cohort study of 7 women with primary invasive breast cancer, we obtained a tumor specimen before (biopsy) and after (tumorectomy) 4 cycles of NAC with epirubicine and cyclophosphamide, followed by 4 cycles of taxanes. Total RNA was extracted from tumor specimens and the whole transcriptome was quantified with Affymetrix HuGene1.1ST. Molecular functions changing during chemotherapy were searched.
Chronic oxidative stress promotes H2AX protein degradation and enhances chemosensitivity in breast cancer patients.
Specimen part, Subject, Time
View Samples10 biopsies before treatment from triple negative patients with complete response were collected. Total RNA was extracted from tumor specimens and the whole transcriptome was quantified with Affymetrix HuGene1.1ST. The biopsies were classified into Good (major or complete) or Poor (absent or minor) therapeutic response subgroup.
Chronic oxidative stress promotes H2AX protein degradation and enhances chemosensitivity in breast cancer patients.
Sex, Specimen part
View SamplesProspectively isolated and characerized skeletal progenitor lineages
Identification and specification of the mouse skeletal stem cell.
Specimen part
View SamplesProspectively isolated and characerized skeletal progenitor lineages
Identification and specification of the mouse skeletal stem cell.
Specimen part
View SamplesPolarity defects are a hallmark of most carcinomas. Cells from invasive micropapillary carcinomas (IMPCs) of the breast are characterized by a striking cell polarity inversion and represent a good model for the analysis of polarity abnormalities. We have performed an in-depth investigation of polarity alterations in 24 IMPCs, compared with invasive carcinomas of no special type (ICNST).
LIN7A is a major determinant of cell-polarity defects in breast carcinomas.
Specimen part
View Samples