trichostatin-a and tamibarotene

Topics: Aminoglycosides; Animals; Antibodies, Monoclonal; Antibodies, Monoclonal, Humanized; Antineoplastic Agents; Arsenic Trioxide; Arsenicals; Benzoates; Clinical Trials as Topic; Combined Modality Therapy; Drug Resistance, Neoplasm; Enzyme Inhibitors; Gemtuzumab; Hematopoietic Stem Cell Transplantation; Humans; Hydroxamic Acids; Leukemia, Promyelocytic, Acute; Oxides; Practice Guidelines as Topic; Recurrence; Remission Induction; Tetrahydronaphthalenes; Tretinoin

Stra8 encodes stimulated by retinoic acid gene 8, a protein that is important for initiation of meiosis in mammals and birds. This study was aimed at identifying the active control area of chicken STRA8 gene core promoter, to screen optimum inducers of the STRA8 gene, thus to enhance the differentiation of embryonic stem cells (ESCs) into spermatogonial stem cells. Fragments of chicken STRA8 gene promoter were cloned into fluorescent reporter plasmids and transfected into DF-1 cells. Then Dual-Luciferase® Reporter Assay System was used to identify the activity of the STRA8 gene under different inducers. Our studies showed that the promoter fragment -1055 bp to +54 bp of Suqin chicken Stra8 revealed the strongest activity. The dual-luciferase® reporter showed that Tamibarotene (Am80) and TrichostatinA (TSA) could significantly enhance STRA8 transcription. The in vitro inductive culture of chicken ESCs demonstrated that spermatogonial stem cells (SSC)-like cells appeared and Integrinβ1 protein was expressed on day 10, indicating that Am80 and TSA can promote ESCs differentiation into SSCs via regulation of Stra8.

Topics: Adaptor Proteins, Signal Transducing; Animals; Avian Proteins; Benzoates; Cell Differentiation; Chick Embryo; Chickens; Embryonic Stem Cells; Histone Deacetylase Inhibitors; Hydroxamic Acids; Promoter Regions, Genetic; Tetrahydronaphthalenes; Tissue Culture Techniques; Transcriptional Activation