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In addition to having profound effects on embryonic pattern formation, retinoic acid (RA) has striking effects on differentiation and maintenance of epithelial cells in vivo and in vitro Skin is a major target organ for retinoids both in its normal and pathological states. The discovery of two human nuclear receptors for RA (hRAR alpha and hRAR beta) acting(More)
That both deficiency and excess of vitamin A lead to a wide spectrum of congenital abnormalities has strongly implicated the active metabolite, retinoic acid (RA), in normal embryonic development. There are 3 families of RA receptors (RARs), RAR alpha, RAR beta and RAR gamma, each having at least two isoforms derived from primary transcripts initiated at(More)
Aberrant transcriptional repression through chromatin remodelling and histone deacetylation has been postulated to represent a driving force underlying tumorigenesis because histone deacetylase inhibitors have been found to be effective in cancer treatment. However, the molecular mechanisms by which transcriptional derepression would be linked to tumour(More)
All-trans-retinoic acid (ATRA) is a physiologically active metabolite of vitamin A. Its antitumour activities have been extensively studied in a variety of model systems and clinical trials; however, to date the only malignancy responsive to ATRA treatment is acute promyelocytic leukaemia (APL) where it induces complete remission in the majority of cases(More)
Hematopoietic stem cells in the bone marrow give rise to lymphoid progenitors, which subsequently differentiate into B and T lymphocytes. Here we show that the proto-oncogene LRF plays an essential role in the B versus T lymphoid cell-fate decision. We demonstrate that LRF is key for instructing early lymphoid progenitors in mice to develop into B lineage(More)
pathways and induce human myeloid leukemia cell differentiation via MAP kinase α Retinoids and myelomonocytic growth factors cooperatively activate RAR (1930 articles) Signal Transduction (4217 articles) Neoplasia (3094 articles) Hematopoiesis and Stem Cells Articles on similar topics can be found in the following Blood collections Information about(More)
Retinoic acid (RA) receptor (RAR) ␤2 has been shown to be underexpressed in human breast cancer cells, including MCF-7 cells, and recent reports have suggested that hypermethylation of the RAR␤2 promoter and 5؅-UTR is the underlying cause. Here we show that RAR␣2 is also underexpressed in MCF-7 breast cancer cells, at both the message and the protein level,(More)
Triple negative breast cancer (TNBC) is characterized by a poorly differentiated phenotype and limited treatment options. Aberrant epigenetics in this subtype represent a potential therapeutic opportunity, but a better understanding of the mechanisms contributing to the TNBC pathogenesis is required. The SIN3 molecular scaffold performs a critical role in(More)
Acute leukemia (AL) is a diverse group of clonal hematopoietic disorders that are broadly categorized into two types: acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL). 1–3 AML is further grouped into acute promyelocytic leukemia (APL, a highly curable disease with a unique and pathognomonic genetic lesion) and non-APL AML. ALL is also(More)
The transcriptional repressor promyelocytic leukemia zinc finger protein (PLZF) is critical for the regulation of normal stem cells maintenance by establishing specific epigenetic landscape. We have previously shown that CBP/p300 acetyltransferase induces PLZF acetylation in order to increase its deoxynucleotidic acid (DNA) binding activity and to enhance(More)
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