Recombinant Human Angiopoietin-1 (ANGPT1) Protein (His)

Name: Recombinant Human Angiopoietin-1 (ANGPT1) Protein (His)
Brand: Beta LifeScience
SKU: BLC-04399P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Collections: All products, High-quality recombinant proteins, Other recombinant proteins

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Product Overview

Description	Recombinant Human Angiopoietin-1 (ANGPT1) Protein (His) is produced by our E.coli expression system. This is a full length protein.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	Q15389
Target Symbol	ANGPT1
Synonyms	AGP 1; AGP1; AGPT; ANG 1; ANG; ANG-1; ANG1; Angiopoietin-1; Angiopoietin1; ANGP1_HUMAN; ANGPT 1; Angpt1; KIAA0003; OTTHUMP00000227592; OTTHUMP00000227599; OTTHUMP00000227600
Species	Homo sapiens (Human)
Expression System	E.coli
Tag	N-6His
Target Protein Sequence	HIGCSNQRRSPENSGRRYNRIQHGQCAYTFILPEHDGNCRESTTDQYNTNALQRDAPHVEPDFSSQKLQHLEHVMENYTQWLQKLENYIVENMKSEMAQIQQNAVQNHTATMLEIGTSLLSQTAEQTRKLTDVETQVLNQTSRLEIQLLENSLSTYKLEKQLLQQTNEILKIHEKNSLLEHKILEMEGKHKEELDTLKEEKENLQGLVTRQTYIIQELEKQLNRATTNNSVLQKQQLELMDTVHNLVNLCTKEGVLLKGGKREEEKPFRDCADVYQAGFNKSGIYTIYINNMPEPKKVFCNMDVNGGGWTVIQHREDGSLDFQRGWKEYKMGFGNPSGEYWLGNEFIFAITSQRQYMLRIELMDWEGNRAYSQYDRFHIGNEKQNYRLYLKGHTGTAGKQSSLILHGADFSTKDADNDNCMCKCALMLTGGWWFDACGPSNLNGMFYTAGQNHGKLNGIKWHYFKGPSYSLRSTTMMIRPLDF
Expression Range	16-498aa
Protein Length	Full Length of Mature Protein
Mol. Weight	59.9kDa
Research Area	Cardiovascular
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Binds and activates TEK/TIE2 receptor by inducing its dimerization and tyrosine phosphorylation. Plays an important role in the regulation of angiogenesis, endothelial cell survival, proliferation, migration, adhesion and cell spreading, reorganization of the actin cytoskeleton, but also maintenance of vascular quiescence. Required for normal angiogenesis and heart development during embryogenesis. After birth, activates or inhibits angiogenesis, depending on the context. Inhibits angiogenesis and promotes vascular stability in quiescent vessels, where endothelial cells have tight contacts. In quiescent vessels, ANGPT1 oligomers recruit TEK to cell-cell contacts, forming complexes with TEK molecules from adjoining cells, and this leads to preferential activation of phosphatidylinositol 3-kinase and the AKT1 signaling cascades. In migrating endothelial cells that lack cell-cell adhesions, ANGT1 recruits TEK to contacts with the extracellular matrix, leading to the formation of focal adhesion complexes, activation of PTK2/FAK and of the downstream kinases MAPK1/ERK2 and MAPK3/ERK1, and ultimately to the stimulation of sprouting angiogenesis. Mediates blood vessel maturation/stability. Implicated in endothelial developmental processes later and distinct from that of VEGF. Appears to play a crucial role in mediating reciprocal interactions between the endothelium and surrounding matrix and mesenchyme.
Subcellular Location	Secreted.
Database References	HGNC: 484 OMIM: 601667 KEGG: hsa:284 STRING: 9606.ENSP00000428340 UniGene: PMID: 28695891 miR-876-5p suppressed proliferation by restraining the expression of Ang-1, which would regulate the phosphorylation level of PI3K, AKT, mTOR and ERK in psoriasic cells. PMID: 29864894 hyperoxia as well as increased TGFbeta signaling is a major contributor to the increased levels of miR34a, which mediate injury via angiopoietin-1 in neonatal lungs PMID: 29079808 High Angpt2 and low Angpt1 levels were positively associated with abnormal cardiac structure. PMID: 27991547 findings reveal a novel role for miR-204/ANGPT1/TGFbetaR2 axis in tumor angiogenesis. We propose that therapeutic manipulation of miR-204 levels may represent a promising approach in breast cancer. PMID: 27703260 VEGF plays a role in the induction of of ANGPT1 in skeletal muscle to stimulate angiogenesis. PMID: 29517203 no significant difference in liver expression between chronic hepatitis C patients and controls PMID: 28027429 serum Ang-2 and Ang-1 levels may help in the diagnosis of patients with lymphatic anomalies and are concordant to sirolimus response. PMID: 27990590 Studied role of change in ratio of angiopoietin-2 (Ang-2) to angiopoietin-1 (Ang-1) levels in hantavirus ionfections. Found imbalance in ang-2:ang-1 lasted through the acute infection phase. PMID: 28734140 Bicarbonate buffered PD fluid promotes vessel maturation via upregulation of angiopoietin-1 in vitro and in children on dialysis PMID: 29253861 When Tie2 becomes inactivated, important molecular brakes are released in the endothelium, which in turn potentiate inflammation and vascular leakage. The ligands of Tie2, Angiopoietin-1 and Angiopoietin-2, regulate its activation status. PMID: 28582314 These data suggest that certain DCE-MRI parameters correlate with R-ISS and adverse prognostic features of angiogenesis, such as the ratio of Angp-1/Angp-2. PMID: 28766001 study revealed decreased levels of VEGF, ANGPT1, and MMP-9 in the early post-transplant period as compared to the baseline (BC). ANGPT2 was decreased after conditioning treatment, but tended to increase from day +7. On day +7, positive correlations between ANGPT1 level as well as MMP-9 and the time to engraftment were observed. PMID: 28956132 These results indicate that the Angpt-Tie2 system is essential for SC integrity. The impairment of this system underlies POAG-associated pathogenesis, supporting the possibility that Tie2 agonists could be a therapeutic option for glaucoma. PMID: 28920924 Ang-1 specifically increases circulating Gr1(+ )inflammatory monocytes and increases monocyte/macrophage retention in atherosclerotic plaques, thereby contributing to development of atherosclerosis. PMID: 28069704 NOX2, NOX4, and mitochondrial-derived reactive oxygen species contribute to angiopoietin-1 signaling and angiogenic responses in endothelial cells. PMID: 28351775 ANG-1, ANG-2 and TIE-2 levels were significantly increased in placenta of non-complicated ART pregnancies compared to placentas from spontaneous conception. PMID: 28238760 study is the first one to report Ang1 capacity to induce MIP-1beta gene expression, protein synthesis and release from neutrophils, and that these effects are mediated by PI3K, p38 MAPK and MEK activation and downstream NF-kappaB activation PMID: 27632174 In this study, we found that angiopoietins and Tie receptors were highly expressed in cervical cancer cells. Tie-2 expression in tumor cells predicted poorer prognosis.Our data support that dual inhibition of Ang-1 and Ang-2 may be an alternative target for anti-angiogenic adjuvant therapy in advanced or recurrent cervical squamous cell cancer. PMID: 28720059 Data show that fibulin-5 strongly binds to the endothelial cell surface reducing endothelial cell viability and interfering with the signaling pathways of the Ang-1/TIE-2 receptor axis. PMID: 27304216 Ang-1 is not a predictive and clinically relevant biomarker in pulmonary hypertension PMID: 27802345 We could therefore conclude that angiogenesis is an important event in the development of common skin warts, and the upregulation of both Ang1 and -2 and their binding receptor Tie2 may play a role in the angiogenesis associated with the development of these lesions. PMID: 26695562 In vitro binding assays with purified components reveal that Tie-integrin recognition is direct, and further demonstrate that the receptor binding domain of the Tie2 ligand Ang-1, but not the receptor binding domain of Ang-2, can independently associate with a5b1 or aVb3. cooperative Tie/integrin interactions selectively stimulate ERK/MAPK signaling in the presence of both Ang-1 and fibronectin PMID: 27695111 Results uncovered ZO-1 as part of a signaling node activated by VEGF, but not Ang-1, that specifically modulates endothelial cells proliferation during angiogenesis. PMID: 26846344 there was no immunohistochemical evidence for apoptosis or autophagy. Quantitative staining showed similar expression levels of the angiogenesis regulators VEGF-A, VEGF-receptor 2 and Angpt1 (p = 0.11), but Angpt2 was significantly lower in CKD children (p = 0.01). PMID: 27846250 Ang-1 and -2 levels and the Ang-2/Ang-1 ratio may be promising indicators of disease activity in hemolytic uremic syndrome induced by enterohemorrhagic Escherichia coli. PMID: 26945868 l-thyroxine increased Ang1 expression and induces bone formation, differentiation, and mineralization in U2OS and MG63 cell lines. PMID: 27569283 Hydroxysafflor yellow A promotes angiogenesis in HUVEC cells via the angiopoietin 1/ Tie-2 signaling pathway. PMID: 27894114 We conclude that aging shifts the balance of the Ang1/Ang2 network favouring a quiescent state. Activation of endothelial cells in aging might be necessary to enhance wound healing capacities. PMID: 27137842 Plasma Ang-1 levels were diminished in Behcet's disease patients, especially in patients with vascular involvement. PMID: 25964071 Ang2/Ang1 ratio might constitute a useful tool for monitoring the progression of chronic liver disease towards cirrhosis and play an important role as therapeutic target. PMID: 27956798 Data suggest that ANGPT1 is active in tight junctions and adherens junctions in the up-regulation of pathophysiological angiogenesis in ovarian follicles in ovarian hyperstimulation syndrome. Follicular fluid from women at risk of ovarian hyperstimulation syndrome in Argentina was used in these studies. PMID: 25485810 the results of the present study suggest that aHSCs increased the expression of Ang-1, resulting in angiogenesis in HCC tissues, thus promoting the growth and metastasis of HCC. PMID: 27358066 Results found that MCT contributes to endothelial cell growth and tube formation via up-regulation of angiopoietin-1 expression suggesting that MCT plays an important role in pancreatic cancer angiogenesis and tumor growth via activating the angiopoietin-1 pathway. PMID: 27240355 Angiopoietin 1 levels were significantly higher in nasopharyngeal cancer patients. PMID: 26758427 High Ang 1 expression in hilar cholangiocarcinoma and infiltration of TIE2-expressing monocytes (TEMs) defines a subgroup of patients with beneficial tumor characteristics and prolonged survival. Low Ang 2 levels tended to inversely correlate with TEMs invasion. PMID: 27111031 GTPCH/Ang-1 interaction in stromal fibroblasts and activation of Tie2 on breast tumor cells could play an important role in supporting breast cancer growth. PMID: 26814432 the homeostasis of vascular endothelial function by Ang-1 and Ang-2 is disrupted in macrophage activation syndrome (MAS); the Ang-2/1 ratio was significantly elevated in the active phase of s-JIA; serum Ang-1 levels were significantly decreased in MAS, whereas the serum Ang-2 levels and the Ang-2/1 ratio were significantly elevated in MAS PMID: 26908294 ANGPT1 may be associated with taxol resistance of nasopharyngeal carcinoma cells. PMID: 26722421 ANGPT1, ANGPT2, and VEGF are associated with development of acute graft-versus-host disease after allogeneic hematopoietic stem cell transplantation. PMID: 26489624 AGP1 is downregulated in non-small cell lung cancer patients compared to those with benign lung disease or no lung disease. PMID: 26908325 In this study found that serum Ang-1 levels were significantly higher at 72 hours post-hemorrhage among aSAH patients. PMID: 26208799 For the diagnosis of HELLP syndrome, increased levels of ET-1,M30 and Angs-1 [Angiopoietin-1] and -2 [Angiopoietin-2]appear as promising biomarkers after determination of their standardized threshold levels PMID: 26138305 H3K9 demethylase KDM3B represses transcription of the angiogenesis regulatory gene, ANGPT1. PMID: 25413303 Angiopoietin-1 Regulates Brain Endothelial Permeability through PTPN-2 Mediated Tyrosine Dephosphorylation of Occludin PMID: 26090670 Genetic variations of ANGPT1 were associated with increased infarct size and disease susceptibility. PMID: 26542693 The distribution of the other genotypes (rs2507800, rs1954727 and rs1010824 of ANGPT1 was not significantly different between patients with psoriasis vulgaris and the healthy controls. PMID: 25753570 Malaria in pregnancy is an effect modifier of the association between Ang-1 and placental barrier thickness. PMID: 26090803 Ang-1 disrupts TLR4 signalling, resulting in inhibition of LPS-induced inflammatory responses in endothelial cells. This inhibition occurs through selective targeting of IRAK1 and TRAF6 proteins by miR-146b-5p. PMID: 25824148 Gingipains from the Porphyromonas gingivalis play roles in regulation of angiopoietin 1 and angiopoietin 2 in human aortic smooth muscle cells. PMID: 26283334

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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.

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