Recombinant Human Thrombospondin Protein (His tag)

Beta LifeScience SKU/CAT #: BLA-8961P

Recombinant Human Thrombospondin Protein (His tag)

Beta LifeScience SKU/CAT #: BLA-8961P
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Product Overview

Host Species Human
Accession P07996
Synonym THBS THBS 1 Thbs1 Thrombospondin 1 Thrombospondin-1 TSP TSP 1 TSP1 TSP1_HUMAN
Description Recombinant Human Thrombospondin Protein (His tag) was expressed in E.coli. It is a Protein fragment
Source E.coli
AA Sequence NRIPESGGDNSVFDIFELTGAARKGSGRRLVKGPDPSSPAFRIEDANLIP PVPDDKFQDLVDAVRAEKGFLLLASLRQMKKTRGTLLALERKDHSGQVFS VVSNGKAGTLDLSLTVQGKQHVVSVEEALLATGQWKSITLFVQEDRAQLY IDCEKMENAELDVPIQSVFTRDLASIARLRIAKGGVNDNFQGVLQNVRFV FGTTPEDILRNKGCSSSTSVLLTLDNNVVNGSSPAIRTNYIGHKTKDLQA ICGISCDELSSMVLELRGLRTIVTTLQDSIRKVTEENKELANELRRPPLC YHNGVQYRNNEEWTVDSCTECHCQNS
Molecular Weight 41 kDa including tags
Purity >90% SDS-PAGE.
Endotoxin < 1.0 EU per μg of the protein as determined by the LAL method
Formulation Liquid Solution
Stability The recombinant protein samples are stable for up to 12 months at -80°C
Reconstitution See related COA
Unit Definition For Research Use Only
Storage Buffer Shipped at 4°C. Store at -20°C or -80°C. Avoid freeze / thaw cycle.

Target Details

Target Function Adhesive glycoprotein that mediates cell-to-cell and cell-to-matrix interactions. Binds heparin. May play a role in dentinogenesis and/or maintenance of dentin and dental pulp. Ligand for CD36 mediating antiangiogenic properties. Plays a role in ER stress response, via its interaction with the activating transcription factor 6 alpha (ATF6) which produces adaptive ER stress response factors.
Subcellular Location Secreted. Cell surface. Secreted, extracellular space, extracellular matrix. Endoplasmic reticulum. Sarcoplasmic reticulum.
Protein Families Thrombospondin family
Database References

Gene Functions References

  1. High THBS1 expression is associated with migration, invasion, and progression of bladder cancer. PMID: 29602637
  2. intracellular dynamics of the TSP1-induced apoptosis signaling pathway PMID: 29258506
  3. TSP-1 effectively elevated P. gingivalis LPS-induced inflammation mediated by the NF-kappaB pathway and may be critical for pathology of periodontitis. PMID: 28634844
  4. These findings indicate that PRR13/THBS1 and TXN expression could be used for the prediction of resistance to treatment of epithelial ovarian cancer patients. PMID: 27779244
  5. TSP-1 appears to play an accessory role in modulating Mp activity in humans and BlaJ mice in a gender, age and muscle-dependent manner, but is unlikely a primary driver of disease progression of dysferlinopathy. PMID: 29206970
  6. TSP-4 A387P polymorphism, but not TSP-1 polymorphism, is an independent risk factor for acute myocardial infarction in Egyptians. PMID: 29336258
  7. Results show that the thrombospondin 1 (TSP1) and its receptor CD47 (CD47) axis selectively regulates NADPH oxidase 1 (Nox1) in the regulation of endothelial senescence and suggest potential targets for controlling the aging process at the molecular level. PMID: 29042481
  8. 15-LOX-1 expression in colon and prostate cancer cells leads to reduced angiogenesis. These changes could be mediated by an increase in the expression of both ICAM-1 and the anti-angiogenic protein TSP-1. PMID: 28757355
  9. miR-98 can suppress the expression of TSP1 in the peripheral B cells of patients with allergic asthma. PMID: 28760845
  10. Data indicate correlation between the levels of thrombospondin-1 and overall survival of ovarian cancer patients, suggesting thrombospondin-1 may be used as a prognostic factor in ovarian cancer patients. PMID: 28655131
  11. Studies show that thrombospondin-1 (Thbs-1), is a prolific contributor to the production and modulation of ROS in large conductance vessels and in the peripheral circulation. Recently, the presence of physiologically relevant circulating Thbs-1 levels was proven to also disrupt vasodilation to nitric oxide (NO) in coronary arterioles from aged animals, negatively impacting coronary blood flow reserve. [review] PMID: 28762749
  12. Our findings suggest that Rab37-mediated TSP1 secretion in cancer cells suppresses metastasis and angiogenesis via a cross-talk with endothelial cells and reveal a novel component of the vesicular exocytic machinery in tumor microenvironment and tumor progression PMID: 28151721
  13. TSP-1 strongly potentiated the proliferative and migratory activity of PDGF on mesenchymal stromal cells. PMID: 26992552
  14. This study demonstrated that THBS! was detected in the serums of Alzheimer disease patients. PMID: 27911324
  15. Functional studies showed THBS1 and TNC to mediate chemoresistance through the integrin beta1/mTOR pathway. PMID: 27487140
  16. These findings shed light on the mechanisms leading to beta-cell failure during metabolic stress and point to THBS1 as an interesting therapeutic target to prevent oxidative stress in type 2 diabetes. PMID: 27588705
  17. Thrombospondin-1 gene polymorphism is associated with estimated pulmonary artery pressure in patients with sickle cell anemia. PMID: 28033687
  18. High plasma levels of TSP-1 are associated with increased pulmonary arterial pressure, increased pulmonary vascular resistance and decreased survival pulmonary hypertension. PMID: 27473366
  19. Genetic variants of THBS1 were significantly more frequent in patients affected by idiopathic/genetic generalized epilepsies than in non-epileptic controls. PMID: 28913875
  20. In pulmonary hypertension TSP1-CD47 is upregulated, and contributes to pulmonary arterial vasculopathy and dysfunction. PMID: 27742621
  21. High THBS1 expression is associated with primary effusion lymphoma. PMID: 28146424
  22. KLK4 further liberated an N-terminal product, with purported angiogenic activity, from thrombospondin-1 (TSP1) and cleaved TSP1 in an osteoblast-derived matrix. PMID: 27378148
  23. Data suggest pituitary cells secrete factor (TSP1) that binds to and inhibits action of BMP2 and BMP4; von Willebrand type C domain of TSP1 is likely responsible for this BMP2/4-binding activity. These studies were initially conducted using cultured cells from ovine pituitary gland and mouse cell line; interactions were confirmed using recombinant human proteins. (TSP1 = thrombospondin-1; BMP = bone morphogenetic protein) PMID: 28747434
  24. the results obtained by combining bioinformatics and preclinical studies strongly suggest that targeting TSP-1/CD47 axis may represent a valuable therapeutic alternative for hampering melanoma spreading. PMID: 27349907
  25. The levels of CD36, STAT3 and TGFbetaR2 mRNA were significantly higher in the TSP1-high group. PMID: 28668845
  26. Study discovered novel and independent associations of prediabetes and related traits with MASP1, and some evidence for associations with THBS1, GPLD1 and ApoA-IV, suggesting a role for these proteins in the pathophysiology of type 2 diabetes. PMID: 27344311
  27. TSP-1 deficiency promotes maladaptive remodelling of the ECM leading to accelerated abdominal aortic aneurysms progression. PMID: 28364044
  28. Low THBS1 expression is associated with lung cancer. PMID: 27513329
  29. FGF7 stimulation of cell invasion and migration was partially suppressed by the FGFR2 knockdown. In addition, FGF7/FGFR2 upregulated THBS1, and cell invasion and migration were decreased by knockdown of THBS1 PMID: 28339036
  30. Introduces a computational model that describes the mechanistic interactions between intracellular biomolecules and cooperation between signaling pathways that together make up the complex network of TSP-1 regulation both at the transcriptional and post-transcriptional level. PMID: 28045898
  31. Peg3 Induces Thrombospondin 1 Secretion and Inhibits Capillary Morphogenesis Independently of Beclin 1. PMID: 28174297
  32. The simulated model of the fully calcium-loaded and calcium-depleted TSP1-Sig1 may enable the development of its interactions as a novel therapeutic target for the treatment of vascular diseases. PMID: 27485292
  33. Regulatory elements for both IRF-1 (-1019 to -1016) and CREB (-1198 to -1195), specific to the distal THBS1 promoter, were required for leptin-induced TSP-1 transcription. PMID: 27281481
  34. Competitive inhibition experiments with other pneumococcal hTSP-1 adhesins demonstrated that PspC and PspC-like Hic recognize similar domains, whereas PavB and Hic can bind simultaneously to hTSP-1. PMID: 28209711
  35. Methylation of DAPK and THBS1 genes occurs in esophageal gastric-type columnar metaplasia and is associated with H. pylori cagA positive infection. PMID: 27182166
  36. Within the limitations of this study, the results seem to sustain the involvement of Pentraxin 3 and Thrombospondin 1 in the processes of inflammation and angiogenesis in wound healing of patients with postorthodontic gingivectomy. PMID: 27403446
  37. Circulating TSP-1 levels decrease up to 24 months prior to diagnosis of PDAC and significantly enhance the diagnostic performance of CA19-9. The influence of diabetes mellitus on biomarker behavior should be considered in future studies. PMID: 26573598
  38. F-actin dynamics modulate the patterning of TSP1 in extracellular matrix and that TSP1 oligomer state is a key determinant of this process. PMID: 26182380
  39. TSP-1 regulates multiple microRNAs in VSMCs adding a new layer of complexity to TSP-1 regulation of VSMC function PMID: 26728995
  40. quercetin could increase TSP-1 expression to inhibit angiogenesis resulting in antagonizing prostate cancer PC-3 cell and xenograft tumor growth PMID: 26676551
  41. The anti-angiogenic activity of the native TSP-1 active fragment was maintained in the new TSP-1 mimetics and the results provide a new chemical approach for the design of TSP-1 mimetics. PMID: 26464514
  42. In the current study Factor V Leiden, prothrombin G20210A, and thrombospondin-1 polymorphisms showed no association with severity of hepatic fibrosis. PMID: 26768578
  43. Triptolide can down regulates the expression of thrombospondin 1 and TGF-beta-1 in renal tubular cells. This plays a role in the pathogenesis of renal tubular fibrosis. PMID: 25945607
  44. increased plasma thrombospondin-1 concentrations following ICH are independently associated with injury severity and short-term and long-term clinical outcomes PMID: 26368265
  45. Novel role of TNFalpha in inducing inflammatory stress response in human microvascular endothelial cells through Akt- and P38 MAPK-mediated expression of TSP-1, independent of NFkappaB signaling. PMID: 25963668
  46. Plasma thrombospondin-1 concentrations are elevated obviously and are highly associated with long-term outcome of ischemic stroke PMID: 26296896
  47. TSP1 up regulation might be critically involved in the disease progression with rheumatoid arthritis. PMID: 25934826
  48. The THBS1 N700S polymorphism was associated with coronary artery disease risk. PMID: 25976449
  49. DLL4/Notch1 and BMP9 interdependent signaling induces endothelial cell quiescence via P27KIP1/thrombospondin pathway. PMID: 26471266
  50. Authors demonstrated that TSP-1 mRNA expression level was significantly upregulated in inflamed periodontitis gingival tissues PMID: 25501558

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.

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