Recombinant Human Transcription factor PU.1 (SPI1)

In Stock
Code CSB-EP022567HU
Size US$256
Order now
Image
  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
  • Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of CSB-EP022567HU could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) SPI1.
  • Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of CSB-EP022567HU could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) SPI1.
Have Questions? Leave a Message or Start an on-line Chat

Product Details

Purity
Greater than 85% as determined by SDS-PAGE.
Target Names
SPI1
Uniprot No.
Research Area
Immunology
Alternative Names
transcription factor spi1; 31 kDa Transforming Protein; 31 kDa-transforming protein; cb1086; Hematopoietic transcription factor PU.1; OF; oncogene spi1; PU.1; SFFV virus-induced murine erythroleukemia oncogene, mouse, homolog of; SFPI1; si:by184l24.2; SPI 1; SPI 1 proto oncogene; SPI A; Spi1; SPI1_HUMAN; Spleen focus forming virus (SFFV) proviral integration oncogene spi1; Spleen focus forming virus proviral integration oncogene spi1; Transcription factor PU.1
Species
Homo sapiens (Human)
Source
E.coli
Expression Region
1-270aa
Target Protein Sequence
MLQACKMEGFPLVPPPSEDLVPYDTDLYQRQTHEYYPYLSSDGESHSDHYWDFHPHHVHSEFESFAENNFTELQSVQPPQLQQLYRHMELEQMHVLDTPMVPPHPSLGHQVSYLPRMCLQYPSLSPAQPSSDEEEGERQSPPLEVSDGEADGLEPGPGLLPGETGSKKKIRLYQFLLDLLRSGDMKDSIWWVDKDKGTFQFSSKHKEALAHRWGIQKGNRKKMTYQKMARALRNYGKTGEVKKVKKKLTYQFSGEVLGRGGLAERRHPPH
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight
35.1kDa
Protein Length
Full Length
Tag Info
N-terminal 6xHis-tagged
Form
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
3-7 business days
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA
Please contact us to get it.
Description

To make this Recombinant Human SPI1 protein, the SPI1 gene was isolated at first and cloned into an expression vector. CUSABIO has built a mature recombinant protein platform. This Recombinant Human SPI1 protein was developed in the platform. It was expressed in E.coli at the region of 1-270aa of the Human SPI1 protein. N-terminal 6xHis tag was fused with the expression vector for affinity and purification purposes. The purity is 85%+ determined by SDS-PAGE.

SPI1 gene encodes the hematopoietic master TF PU.1. Previous studies define the clinical and molecular phenotype of this novel inherited PU.1 haploinsufficiency syndrome, which they term PU.1-mutated agammaglobulinemia (PU.MA). PU.1 is a key transcriptional regulator required in the development of multiple hematopoietic lineages. Somatic mutations in SPI1 have been reported in the context of acute myeloid leukemia. However germline variants impacting human SPI1 have not been previously identified. Mouse models of Spi1-deficient hematopoiesis indicate a crucial role for PU.1 in early lineage commitment, differentiation of multiple myeloid lineages, as well as B cell development. However, the precise effect of SPI1 loss on human hematopoiesis has remained unknown. PU.1 has been shown to have multifaceted roles in hematopoiesis, with reduced PU.1 levels causing B cell developmental arrest, but other specific PU.1 perturbations can favor B cell over myeloid lineage development.

Customer Reviews and Q&A

 Customer Reviews

There are currently no reviews for this product.

Submit a Review here

Target Background

Function
Binds to the PU-box, a purine-rich DNA sequence (5'-GAGGAA-3') that can act as a lymphoid-specific enhancer. This protein is a transcriptional activator that may be specifically involved in the differentiation or activation of macrophages or B-cells. Also binds RNA and may modulate pre-mRNA splicing.
Gene References into Functions
  1. these results suggest that attenuating PU.1 may be a valid therapeutic approach to limit microglial-mediated inflammatory responses in Alzheimer's disease PMID: 30124174
  2. PU.1 3'UTR attenuates TNFalphainduced proliferation and cytokine release of RAFLS by acting as a ceRNA for FOXO3 to regulate miR155 activity. PMID: 29693176
  3. Inhibition of endogenous miR-155 in B cells of rheumatoid arthritis patients restores PU.1 and reduces production of antibodies. PMID: 27671860
  4. PU.1 binds to OX40L promoter in dendritic cells. PMID: 27708417
  5. These results bring indirect evidence that leukemia develops from cells which have bypassed Spi1-induced senescence. Overall, our results reveal senescence as a Spi1-induced anti-proliferative mechanism that may be a safeguard against the development of acute myeloid leukemia. PMID: 28912174
  6. In contrast, expression of Spi1/PU.1 in a Fli1 producing erythroleukemia cell line in which fli1 is activated, resulted in increased proliferation through activation of growth promoting proteins MAPK, AKT, cMYC and JAK2 PMID: 28586009
  7. Data show that protein phosphatase-1 alpha (PP1alpha) is required to maintain checkpoint kinase 1 (CHK1) in a dephosphorylated state and for the accelerated replication fork progression in Spi1/PU.1 transcription factor-overexpressing cells. PMID: 28415748
  8. the results indicate that PU.1 may be a critical factor for the innate defense against A. fumigatus, and may therefore be a potential target for the prophylaxis and treatment of IPA. PMID: 28440496
  9. PU.1 supports TRAIL-induced cell death by inhibiting RelA-mediated cell survival and inducing DR5 expression. PMID: 28362429
  10. PU.1 directly activates the expression of HOTAIRM1 through binding to the regulatory region of HOTAIRM1 during granulocytic differentiation. PMID: 27146823
  11. PU.1 and IL-9 may play a role in AD pathogenesis and relate to disease severity and clinical eruption types. PMID: 28229452
  12. PU.1 has a role in tumor suppression in PEL and its down-regulation is associated with PEL development. PMID: 28481873
  13. PU.1-induced apoptosis in myeloma cells is associated with IRF4 downregulation and subsequent IRF7 upregulation. PMID: 28368411
  14. Most cases of histiocytic sarcoma expressed histiocytic markers CD68 (6 of 7 cases), CD163 (5 of 5 cases), and PU.1 (3 of 4 cases). PMID: 28805986
  15. findings highlight a unique role of SPI1 fusions in high-risk pediatric T cell acute lymphoblastic leukemia PMID: 28671687
  16. Alzheimer's disease heritability was enriched within the PU.1 cistrome, implicating a myeloid PU.1 target gene network in AD. PMID: 28628103
  17. expression of an essential mediator of neutrophil terminal differentiation, the ets transcription factor PU.1, was significantly decreased in Hbb(th3/+) neutrophils in beta-thalassemia PMID: 28325862
  18. RUNX1 overexpression induced partial DNA demethylation at SPI1 proximal promoter. PMID: 28376714
  19. This study demonstrated the novel role of PU.1 in the immune response to A. fumigatus through upregulation of Dectin-1 expression and its translocation to the nucleus in A. fumigatus-stimulated THP-1 cells. PMID: 27306059
  20. PU.1 is an important modulator of VDR signaling in monocytes. PMID: 28232093
  21. Forced FOG1 protein expression in K562 erythroleukemia cells induced the expression of SLC4A1 protein, but repressed that of transcription factor PU.1. PMID: 28216155
  22. Moreover, the expression of a cell proliferation marker Ki67 was significantly decreased in tumors from the mice not taking doxycycline, compared with that of tumors from the mice continuously taking doxycycline. The present data strongly suggest that PU.1 functions as a tumor suppressor of myeloma cells in vivo. PMID: 28347818
  23. we demonstrated that miR-22 promoted monocyte/macrophage differentiation, and MECOM (EVI1) mRNA is a direct target of miR-22 and MECOM (EVI1) functions as a negative regulator in the differentiation.The miR-22-mediated MECOM degradation increased c-Jun but decreased GATA2 expression, which results in increased interaction between c-Jun and PU.1 PMID: 27617961
  24. we conclude that PU.1 transactivates the pIII through direct binding to Ets-motifs in the promoter in pDCs PMID: 27105023
  25. Our results suggest the existence of a Vav1/PU.1/miR-142-3p network that supports all-trans retinoic acid -induced differentiation in acute promyelocytic leukemia -derived cells PMID: 27480083
  26. Our data suggest that E2A antagonism of PU.1 activity contributes to its ability to commit multipotential hematopoietic progenitors to the lymphoid lineages. PMID: 26942192
  27. This study showed that HCV infection might abrogate NK cytotoxic potential through altering PU.1, NKG2D receptor and perforin molecules. PMID: 26429314
  28. SPI1-GFI1B transcriptional network is an important regulatory axis in acute myeloid leukemia as well as in the development of erythroid versus myelomonocytic cell fate PMID: 26851695
  29. The GATA-1-mediated inhibition of PU.1 gene transcription in human AML-erythroleukemias mediated through the URE represents important mechanism that contributes to PU.1 downregulation and leukemogenesis that is sensitive to DNA demethylation therapy PMID: 27010793
  30. PU.1 downregulation was noted in B-CLL/SLL samples positive for the adverse prognostic markers CD38 and ZAP-70. PMID: 26261072
  31. PU.1 recruitment coupled with increased histone acetylation induces gene expression and activates a monocyte/macrophage transcriptional programme. PMID: 26126967
  32. This study demonstrated positive regulation of monocyte/macrophage differentiation by lnc-MC and uncovered an elaborate regulation mechanism composed of PU.1, lnc-MC, miR-199a-5p, and ACVR1B. PMID: 26149389
  33. Collectively, IMiDs exert demethylation activity through inhibiting DNMT1, 3a, and 3b, and up-regulating PU.1 expression, which may be one of the mechanisms of the anti-myeloma activity of IMiDs. PMID: 26657848
  34. Loss of PU.1 expression is associated with Hepatocellular Carcinoma. PMID: 25987019
  35. PU.1 suppressive target gene, metallothionein 1G, inhibits retinoic acid-induced NB4 cell differentiation. PMID: 25072246
  36. This review summarizes current knowledge and ideas of molecular mechanisms by which PU.1 controls hematopoiesis and suppresses leukemia. [review] PMID: 25205721
  37. A novel network has been described in acute myeloid leukemia in which FLT3-ITD signaling induces oncogenic miR-155 by p65 and STAT5 thereby targeting transcription factor PU.1. PMID: 25092144
  38. The increased CITED2 expression in acute myeloid leukemia results in better hematopoietic stem cell survival, lower PU.1 levels, and perturbed myeloid differentiation program that contributes to leukemia persistence. PMID: 25184385
  39. Runx-dependent PU.1 chromatin interaction and transcription of PU.1 are essential for both normal and leukemia stem cells. PMID: 25185713
  40. PU.1- targeted genes undergo Tet2-coupled demethylation and DNMT3b-mediated methylation in monocyte-to-osteoclast differentiation. PMID: 24028770
  41. DNA complex may be relevant to an emerging role of PU.1, but not Ets-1, as a pioneer transcription factor in vivo PMID: 24952944
  42. Data show that CCCTC-binding factor (CTCF) together with ISWI ATPase SMARCA5 and members of the Cohesin complex associate with the SPI1 protein is disrupted in acute myeloid leukemia (AML) blasts. PMID: 24498324
  43. The PU.1-regulated MAP1S gene is implicated in neutrophil differentiation and autophagy control. PMID: 25043887
  44. hnRNP K and PU.1 act synergistically during granulocytic differentiation, hnRNP K seems to have a negative effect on PU.1 activity during monocytic maturation PMID: 25005557
  45. Data indicate that transcription factors RUNX1 and PU.1 cooperated to exchange corepressors for coactivators, and deficiency of RUNX1, frequent in leukemia, caused aberrant recruitment of specific corepressors instead of coactivators to PU.1. PMID: 24695740
  46. IL-32theta; reduces PKCdelta-mediated phosphorylation of PU.1, resulting in attenuation of IL-1beta production PMID: 24996056
  47. HSF1 appears as a fine-tuning regulator of SPI1/PU.1 expression at the transcriptional and post-translational levels during macrophage differentiation of monocytes. PMID: 24504023
  48. our findings demonstrate that PU.1 contributes to the development of MLL leukemia, partially via crosstalk with the MEIS/HOX pathway. PMID: 24445817
  49. Given the importance of C/EBPs and PU.1 in myeloid development, these results, thus, suggest that restoration of the normal function of the myeloid cell transcriptional machinery is a major molecular mechanism underlying the differentiation induction PMID: 24379003
  50. Mice with PU.1 deficiency in T cells were protected from colitis, whereas treatment with antibody to IL-9 suppressed colitis PMID: 24908389

Show More

Hide All

Subcellular Location
Nucleus.
Protein Families
ETS family
Database Links

HGNC: 11241

OMIM: 165170

KEGG: hsa:6688

STRING: 9606.ENSP00000227163

UniGene: Hs.502511

icon of phone
Call us
301-363-4651 (Available 9 a.m. to 5 p.m. CST from Monday to Friday)
icon of address
Address
7505 Fannin St., Ste 610, Room 322 (CUBIO Innovation Center), Houston, TX 77054, USA
icon of social media
Join us with

Subscribe newsletter

Leave a message

* To protect against spam, please pass the CAPTCHA test below.
CAPTCHA verification
© 2007-2024 CUSABIO TECHNOLOGY LLC All rights reserved. 鄂ICP备15011166号-1
Place an order now

I. Product details

*
*
*
*

II. Contact details

*
*

III. Ship To

*
*
*
*
*
*
*

IV. Bill To

*
*
*
*
*
*
*
*