What does OCT4 stand for?
octamer-binding transcription factor 4
Oct-4 (octamer-binding transcription factor 4), also known as POU5F1 (POU domain, class 5, transcription factor 1), is a protein that in humans is encoded by the POU5F1 gene. Oct-4 is a homeodomain transcription factor of the POU family.
What is the function of OCT4?
Oct4 mainly functions through the activation of pluripotency-associated and self-renewal-associated genes, while simultaneously repressing genes that promote differentiation, in coordination with other pluripotency factors and coregulators.
What is the SOX2 gene?
The SOX2 gene provides instructions for making a protein that plays a critical role in the formation of many different tissues and organs during embryonic development. The SOX2 protein is especially important for the development of the eyes.
What does the POU5F1 gene do?
POU5F1 Gene – POU Class 5 Homeobox 1 This gene encodes a transcription factor containing a POU homeodomain that plays a key role in embryonic development and stem cell pluripotency. Aberrant expression of this gene in adult tissues is associated with tumorigenesis.
Where is Oct4 found?
In vitro, Oct4 is highly expressed in undifferentiated embryonic stem (ES) cells, embryonic carcinoma (EC) cells and embryonic germ cells.
What does Oct4 bind to?
OCT4 binds distal regulatory sites in mouse embryonic stems cells to shape chromatin accessibility. During somatic cell reprogramming, exogenous OCT4 is proposed to function as a pioneer transcription factor that can bind to its sequence motifs in inaccessible regions of chromatin.
What is the role of OCT4 in embryonic stem cells?
In the past several years, genome-wide identification of Oct4 target genes and Oct4-centered protein interactomes has been reported, indicating that Oct4 exerts tight control over pluripotency regulator expression and protects embryonic stem cells in an undifferentiated state.
What does OCT4 bind to?
How is SOX2 syndrome diagnosed?
Diagnosis/testing. The diagnosis of SOX2 disorder is established in a proband in whom molecular genetic testing identifies either a heterozygous intragenic SOX2 pathogenic variant or a deletion of 3q26. 33 involving SOX2.
What activates SOX2?
Sox2 protein can be modulated by methylation, acetylation, sumoylation and phosphorylation, which subsequently affect its activities as a transcriptional regulator.
What is the source of the name nanog?
The name NANOG derives from Tìr nan Òg, the mythical Celtic land of youth. The NANOG protein possesses a homeobox sequence, containing a 60-63 amino acid motif, within the coded protein.
What is tra1?
TRA-1-60 is a cell surface antigen, expressed along with SSEA-3, SSEA-4 and TRA-1-81 in human embryonic stem cells, embryonal carcinoma cells and induced pluripotent stem cells (iPS). These surface markers are lost during the differentiation process.
What does Oct-4 stand for?
Octamer-binding transcription factor 4, OCT-4, is a transcription factor protein that is encoded by the Pou5f1 gene and is part of the POU (Pit-Oct-Unc) family. OCT-4 consists of an octamer motif, a particular DNA sequence of AGTCAAAT that binds to their target genes and activates or deactivates certain expressions.
What is the role of Oct4 in stem cell differentiation?
Oct-4 expression is associated with an undifferentiated phenotype and tumors. Gene knockdown of Oct-4 promotes differentiation, demonstrating a role for these factors in human embryonic stem cell self-renewal. Oct-4 can form a heterodimer with Sox2, so that these two proteins bind DNA together.
What is Oct-4 transcription factor?
Oct-4 transcription factor is initially active as a maternal factor in the oocyte and remains active in embryos throughout the preimplantation period. Oct-4 expression is associated with an undifferentiated phenotype and tumors.
Why is Oct-4 expression important for pluripotency?
Therefore, the level of Oct-4 expression in mice is vital for regulating pluripotency and early cell differentiation since one of its main functions is to keep the embryo from differentiating. Orthologs of Oct-4 in humans and other species include: