Forkhead domain mutations in FOXA1 drive prostate cancer cell progression
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA551479 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR9604300.fastq.gz | Fastqsanger.gz | |||
| SRR9604310.fastq.gz | Fastqsanger.gz | |||
| SRR9604320.fastq.gz | Fastqsanger.gz | |||
| SRR9604301.fastq.gz | Fastqsanger.gz | |||
| SRR9604311.fastq.gz | Fastqsanger.gz |
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Project description: Not available
| S-EPMC6796877 | biostudies-literature
Project description:This SuperSeries is composed of the SubSeries listed below.
2019-10-15 | GSE133455 | GEO
Project description:Pioneer transcription factors (TFs) exhibit a special ability to bind to and open closed chromatin, facilitating engagement by other regulatory factors involved in gene activation or repression. Chemical probes are lacking for pioneer TFs, which has hindered their mechanistic investigation in cells. Here, we report electrophilic small molecules that stereoselectively and site-specifically bind the pioneer TF, FOXA1, at a cysteine (C258) within the forkhead DNA-binding domain. We show that these covalent ligands react with FOXA1 in a DNA-dependent manner and rapidly remodel its pioneer activity in prostate cancer cells reflected in redistribution of FOXA1 binding across the genome and directionally correlated changes in chromatin accessibility. Motif analysis supports a mechanism where the covalent ligands relax the canonical DNA binding preference of FOXA1 by strengthening interactions with suboptimal ancillary sequences in predicted proximity to C258. Our findings reveal a striking plasticity underpinning the pioneering function of FOXA1 that can be controlled by small molecules.
2024-09-05 | PXD050685 | Pride
Project description:Invasive Lobular Carcinoma (ILC) is the second most frequent breast cancer (BCa) type and encompasses 10-15% of BCa cases. FOXA1 specific mutations are enriched in this subtype of BCa, however their role in breast cancer pathogenesis is still ill-defined. FOXA1, together with estrogen receptor (ER), is a key transcription factor for the correct activation of estrogen-dependent gene expression and, consequently, for mammary gland development and BCa identity. FOXA1 has the capability to bind to and de-compact heterochromatin to render it accessible for other nuclear proteins, such as ER, and allow activation of their transcriptional programs upon estrogen stimulation. In this project, we aim to elucidate the role of FOXA1 missense mutations in altering its binding to DNA, chromatin accessibility, ER-dependent transcription and their implication in limiting the sensitivity to standard-of-care anti-hormonal therapy, commonly used in ER-positive BCa patients. To this end, we have generated BCa cell lines expressing these FOXA1 mutations and we will employ ATAC-Seq, RIME assays, ChIP-Seq and RNA-Seq to ascertain their effect on DNA accessibility, DNA binding capability, as well as binding of transcriptional coregulators, such as ER, to chromatin. We will extend our analyses to our internal BCa patient datasets with detailed clinical annotation to study the correlation between presence of FOXA1 mutations and response to anti-hormonal therapy of ER-positive BCa patients. The results of this project will allow to understand how the different mutations in the Forkhead domain can alter FOXA1 and ER function, transcriptional regulation and response to anti-hormonal therapy in ER-positive BCa patients.
2020-11-19 | GSE134654 | GEO
Project description:Invasive Lobular Carcinoma (ILC) is the second most frequent breast cancer (BCa) type and encompasses 10-15% of BCa cases. FOXA1 specific mutations are enriched in this subtype of BCa, however their role in breast cancer pathogenesis is still ill-defined. FOXA1, together with estrogen receptor (ER), is a key transcription factor for the correct activation of estrogen-dependent gene expression and, consequently, for mammary gland development and BCa identity. FOXA1 has the capability to bind to and de-compact heterochromatin to render it accessible for other nuclear proteins, such as ER, and allow activation of their transcriptional programs upon estrogen stimulation. In this project, we aim to elucidate the role of FOXA1 missense mutations in altering its binding to DNA, chromatin accessibility, ER-dependent transcription and their implication in limiting the sensitivity to standard-of-care anti-hormonal therapy, commonly used in ER-positive BCa patients. To this end, we have generated BCa cell lines expressing these FOXA1 mutations and we will employ ATAC-Seq, RIME assays, ChIP-Seq and RNA-Seq to ascertain their effect on DNA accessibility, DNA binding capability, as well as binding of transcriptional coregulators, such as ER, to chromatin. We will extend our analyses to our internal BCa patient datasets with detailed clinical annotation to study the correlation between presence of FOXA1 mutations and response to anti-hormonal therapy of ER-positive BCa patients. The results of this project will allow to understand how the different mutations in the Forkhead domain can alter FOXA1 and ER function, transcriptional regulation and response to anti-hormonal therapy in ER-positive BCa patients.
2020-11-19 | GSE134656 | GEO
Project description:Invasive Lobular Carcinoma (ILC) is the second most frequent breast cancer (BCa) type and encompasses 10-15% of BCa cases. FOXA1 specific mutations are enriched in this subtype of BCa, however their role in breast cancer pathogenesis is still ill-defined. FOXA1, together with estrogen receptor (ER), is a key transcription factor for the correct activation of estrogen-dependent gene expression and, consequently, for mammary gland development and BCa identity. FOXA1 has the capability to bind to and de-compact heterochromatin to render it accessible for other nuclear proteins, such as ER, and allow activation of their transcriptional programs upon estrogen stimulation. In this project, we aim to elucidate the role of FOXA1 missense mutations in altering its binding to DNA, chromatin accessibility, ER-dependent transcription and their implication in limiting the sensitivity to standard-of-care anti-hormonal therapy, commonly used in ER-positive BCa patients. To this end, we have generated BCa cell lines expressing these FOXA1 mutations and we will employ ATAC-Seq, RIME assays, ChIP-Seq and RNA-Seq to ascertain their effect on DNA accessibility, DNA binding capability, as well as binding of transcriptional coregulators, such as ER, to chromatin. We will extend our analyses to our internal BCa patient datasets with detailed clinical annotation to study the correlation between presence of FOXA1 mutations and response to anti-hormonal therapy of ER-positive BCa patients. The results of this project will allow to understand how the different mutations in the Forkhead domain can alter FOXA1 and ER function, transcriptional regulation and response to anti-hormonal therapy in ER-positive BCa patients.
2020-11-19 | GSE134655 | GEO
Project description:Invasive Lobular Carcinoma (ILC) is the second most frequent breast cancer (BCa) type and encompasses 10-15% of BCa cases. FOXA1 specific mutations are enriched in this subtype of BCa, however their role in breast cancer pathogenesis is still ill-defined. FOXA1, together with estrogen receptor (ER), is a key transcription factor for the correct activation of estrogen-dependent gene expression and, consequently, for mammary gland development and BCa identity. FOXA1 has the capability to bind to and de-compact heterochromatin to render it accessible for other nuclear proteins, such as ER, and allow activation of their transcriptional programs upon estrogen stimulation. In this project, we aim to elucidate the role of FOXA1 missense mutations in altering its binding to DNA, chromatin accessibility, ER-dependent transcription and their implication in limiting the sensitivity to standard-of-care anti-hormonal therapy, commonly used in ER-positive BCa patients. To this end, we have generated BCa cell lines expressing these FOXA1 mutations and we will employ ATAC-Seq, RIME assays, ChIP-Seq and RNA-Seq to ascertain their effect on DNA accessibility, DNA binding capability, as well as binding of transcriptional coregulators, such as ER, to chromatin. We will extend our analyses to our internal BCa patient datasets with detailed clinical annotation to study the correlation between presence of FOXA1 mutations and response to anti-hormonal therapy of ER-positive BCa patients. The results of this project will allow to understand how the different mutations in the Forkhead domain can alter FOXA1 and ER function, transcriptional regulation and response to anti-hormonal therapy in ER-positive BCa patients.
2020-11-19 | GSE161767 | GEO
Project description:Invasive Lobular Carcinoma (ILC) is the second most frequent breast cancer (BCa) type and encompasses 10-15% of BCa cases. FOXA1 specific mutations are enriched in this subtype of BCa, however their role in breast cancer pathogenesis is still ill-defined. FOXA1, together with estrogen receptor (ER), is a key transcription factor for the correct activation of estrogen-dependent gene expression and, consequently, for mammary gland development and BCa identity. FOXA1 has the capability to bind to and de-compact heterochromatin to render it accessible for other nuclear proteins, such as ER, and allow activation of their transcriptional programs upon estrogen stimulation. In this project, we aim to elucidate the role of FOXA1 missense mutations in altering its binding to DNA, chromatin accessibility, ER-dependent transcription and their implication in limiting the sensitivity to standard-of-care anti-hormonal therapy, commonly used in ER-positive BCa patients. To this end, we have generated BCa cell lines expressing these FOXA1 mutations and we will employ ATAC-Seq, RIME assays, ChIP-Seq and RNA-Seq to ascertain their effect on DNA accessibility, DNA binding capability, as well as binding of transcriptional coregulators, such as ER, to chromatin. We will extend our analyses to our internal BCa patient datasets with detailed clinical annotation to study the correlation between presence of FOXA1 mutations and response to anti-hormonal therapy of ER-positive BCa patients. The results of this project will allow to understand how the different mutations in the Forkhead domain can alter FOXA1 and ER function, transcriptional regulation and response to anti-hormonal therapy in ER-positive BCa patients.
2020-11-19 | GSE161766 | GEO
Project description:Exclusion of lymphocytes from tumors is a major barrier for effective immuno- and chemo-therapy of cancer. We found that FOXA1 overexpression inversely correlates with expression of antigen processing and presentation and interferon signaling genes in different cancer types. FOXA1 binds to STAT proteins and inhibits expression of antigen presentation and interferon response genes and tumor immunity independent of the forkhead domain - DNA binding function. Increased FOXA1 also correlates with immunotherapy resistance in murine triple negative breast tumor and bladder cancer in patients and chemo-resistance in breast cancer patients. Our results reveal that FOXA1 is a key immune suppressor, suggesting that FOXA1 overexpression may predict tumor resistance to immuno- and chemo-therapies and that depletion of FOXA1 may therapeutically convert cancers from ‘immune-cold’ to ‘immune-hot’ diseases.
2020-12-31 | GSE142221 | GEO
Project description:The forkhead transcription factor, Foxp3, is pivotal to the development and function of CD4+CD25+ T regulatory (Treg) cells that limit autoimmunity and maintain immune homeostasis. Previous data indicated that many of the functions of Foxp3 are controlled by the acetylation of several lysines within the forkhead domain. We now show that mutation of each of two lysines within the forkhead domain of Foxp3, lysine at position 382 (K17) and lysine at position 393 (K18), impaired Treg suppressive function in vivo and in vitro. Lysine mutations also decreased Treg expression of multiple functionally important Foxp3-regulated genes, and inhibited the promoter remodeling of target genes (CTLA-4 and IL-2) without affecting Foxp3 expression level. These data point to the need for a further understanding of the effects of various post-translational modifications on Foxp3 function. Our studies also provide a rationale for developing small molecule inhibitors of such post-translational modifications so as to regulate Foxp3+ Treg function clinically. RNA from three independent samples from magnetically separated CD4+CD25- T-effector cells transduced with EV, WT-Fopx3, Foxp3-K17R or Foxp3-K18R
2011-02-05 | E-GEOD-27082 | biostudies-arrayexpress