HEMGN | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Aliases | HEMGN , CT155, EDAG, EDAG-1, NDR, hemogen | ||||||||||||||||||||||||||||||||||||||||||||||||||
External IDs | OMIM: 610715; MGI: 2136910; HomoloGene: 14223; GeneCards: HEMGN; OMA:HEMGN - orthologs | ||||||||||||||||||||||||||||||||||||||||||||||||||
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Wikidata | |||||||||||||||||||||||||||||||||||||||||||||||||||
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Hemogen is a protein that in humans is encoded by the HEMGN gene. [5] Hemgn Expression Regulation by Gfi1 Gfi1 (growth factor independence 1) is a transcriptional repressor involved in hematopoiesis, and it plays a crucial role in protecting hematopoietic cells from stress-induced apoptosis. The Hemgn gene is regulated by Gfi1 through a 16-bp promoter region, which is specifically located between +47 and +63 bp relative to the transcription start site (TSS). This regulation is dependent on Gfi1's interaction with the histone demethylase LSD1.
The key interaction mechanisms are as follows:
Gfi1 activates Hemgn expression through binding to its promoter region. Gfi1's activation is enhanced by its interaction with LSD1, which facilitates epigenetic modifications to increase the transcription of Hemgn.
Ikaros, another transcription factor, works synergistically with Gfi1 to further increase Hemgn expression. While Ikaros enhances Hemgn expression, it is not absolutely required for the Gfi1-mediated upregulation.
PU.1, another transcription factor, acts as a repressor of Hemgn. Gfi1 represses PU.1 expression, which precedes and correlates with the upregulation of Hemgn. In the absence of PU.1 (e.g., during knockdown or deficiency), Hemgn expression is augmented, showing that Gfi1 achieves Hemgn upregulation by suppressing PU.1.
The upregulation of Hemgn contributes significantly to the anti-apoptotic activity of Gfi1, allowing for cell survival under conditions of stress. This process occurs in a p53-independent manner, meaning that the anti-apoptotic effects of Gfi1 are not mediated through p53 pathways but rather through Hemgn regulation. [6]
Lysine-specific histone demethylase 1A (LSD1) also known as lysine (K)-specific demethylase 1A (KDM1A) is a protein that in humans is encoded by the KDM1A gene. LSD1 is a flavin-dependent monoamine oxidase, which can demethylate mono- and di-methylated lysines, specifically histone 3, lysine 4 (H3K4). Other reported methylated lysine substrates such as histone H3K9 and TP53 have not been biochemically validated. This enzyme plays a critical role in oocyte growth, embryogenesis, hematopoiesis and tissue-specific differentiation. LSD1 was the first histone demethylase to be discovered though more than 30 have since been described.
Death-associated protein 6 also known as Daxx is a protein that in humans is encoded by the DAXX gene.
Forkhead box protein P1 is a protein that in humans is encoded by the FOXP1 gene. FOXP1 is necessary for the proper development of the brain, heart, and lung in mammals. It is a member of the large FOX family of transcription factors.
MN1 is a gene found on human chromosome 22, with gene map locus 22q12.3-qter. Its official full name is meningioma 1 because it is disrupted by a balanced translocation (4;22) in a meningioma.
Promyelocytic leukemia protein (PML) is the protein product of the PML gene. PML protein is a tumor suppressor protein required for the assembly of a number of nuclear structures, called PML-nuclear bodies, which form amongst the chromatin of the cell nucleus. These nuclear bodies are present in mammalian nuclei, at about 1 to 30 per cell nucleus. PML-NBs are known to have a number of regulatory cellular functions, including involvement in programmed cell death, genome stability, antiviral effects and controlling cell division. PML mutation or loss, and the subsequent dysregulation of these processes, has been implicated in a variety of cancers.
Protein C-ets-1 is a protein that in humans is encoded by the ETS1 gene. The protein encoded by this gene belongs to the ETS family of transcription factors.
Myb-related protein B is a protein that in humans is encoded by the MYBL2 gene.
GATA2 or GATA-binding factor 2 is a transcription factor, i.e. a nuclear protein which regulates the expression of genes. It regulates many genes that are critical for the embryonic development, self-renewal, maintenance, and functionality of blood-forming, lympathic system-forming, and other tissue-forming stem cells. GATA2 is encoded by the GATA2 gene, a gene which often suffers germline and somatic mutations which lead to a wide range of familial and sporadic diseases, respectively. The gene and its product are targets for the treatment of these diseases.
Transcription factor PU.1 is a protein that in humans is encoded by the SPI1 gene.
Homeobox protein Hox-A10 is a protein that in humans is encoded by the HOXA10 gene.
ERG is an oncogene. ERG is a member of the ETS family of transcription factors. The ERG gene encodes for a protein, also called ERG, that functions as a transcriptional regulator. Genes in the ETS family regulate embryonic development, cell proliferation, differentiation, angiogenesis, inflammation, and apoptosis.
Hematopoietically-expressed homeobox protein HHEX is a protein that in humans is encoded by the HHEX gene and also known as Proline Rich Homeodomain protein PRH.
HMG-box transcription factor 1, also known as HBP1, is a human protein.
Homeobox protein Hox-B3 is a protein that in humans is encoded by the HOXB3 gene.
Zinc finger protein Gfi-1 is a transcriptional repressor that in humans is encoded by the GFI1 gene. It is important normal hematopoiesis. Gfi1 is a transcriptional repressor that plays a critical role in hematopoiesis and in protecting hematopoietic cells against stress-induced apoptosis. Recent research has shown that Gfi1 upregulates the expression of the nuclear protein Hemgn, which contributes to its anti-apoptotic activity. This upregulation is mediated through a specific 16-bp promoter region and is dependent on Gfi1’s interaction with the histone demethylase LSD1.
ID4 is a protein coding gene. In humans, it encodes the protein known as DNA-binding protein inhibitor ID-4. This protein is known to be involved in the regulation of many cellular processes during both prenatal development and tumorigenesis. This is inclusive of embryonic cellular growth, senescence, cellular differentiation, apoptosis, and as an oncogene in angiogenesis.
T-cell leukemia homeobox protein 3 is a protein that in humans is encoded by the TLX3 gene.
Krueppel-like factor 12 is a protein that in humans is encoded by the KLF12 gene.
B-cell lymphoma/leukemia 11A is a protein that in humans is encoded by the BCL11A gene.
Apoptosis-stimulating of p53 protein 1 is a protein that in humans is encoded by the PPP1R13B gene.