Recombinant Human VEGF165b Protein

Name: Recombinant Human VEGF165b Protein
Brand: Beta LifeScience
SKU: BLPSN-4787
Availability: InStock

Collections: Buy cytokines, chemokines, and growth factors for research online, Growth factors and receptors for advanced research, High-quality recombinant proteins

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Product Overview

Tag	N/A
Host Species	Human
Accession	NP_001028928.1
Synonym	MVCD1, VEGF, VEGF165, VPF
Background	Vascular endothelial growth factor (VEGF), also known as vascular permeability factor (VPF) and VEGF-A, is a potent mediator of both angiogenesis and vasculogenesis in the fetus and adult. It is a member of the platelet-derived growth factor (PDGF)/vascular endothelial growth factor (VEGF) family and often exists as a disulfide-linked homodimer. VEGF-A protein is a glycosylated mitogen that specifically acts on endothelial cells and has various effects, including mediating increased vascular permeability, inducing angiogenesis, vasculogenesis and endothelial cell growth, promoting cell migration, inhibiting apoptosis and tumor growth. VEGF-A protein is also a vasodilator that increases microvascular permeability, thus it was originally referred to as vascular permeability factor.Immune CheckpointImmunotherapyCancer ImmunotherapyTargeted Therapy
Description	A DNA sequence encoding the human VEGFA (NP_001028928.1) (Met1-Asp191) was expressed.
Source	Baculovirus-Insect Cells
Predicted N Terminal	Ala 27
AA Sequence	Met1-Asp191
Molecular Weight	The recombinant human VEGFA consists of 165 a.a. and predicts a molecular mass of 19.1 kDa.
Purity	>95% as determined by SDS-PAGE.
Endotoxin	< 1.0 EU per μg protein as determined by the LAL method.
Bioactivity	Please contact us for detailed information
Formulation	Lyophilized from sterile 100 mM Glycine, 10 mM Nacl pH 6.0..
Stability	The recombinant proteins are stable for up to 1 year from date of receipt at -70°C.
Usage	For Research Use Only
Storage	Store the protein under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

Target Details

Target Function	Growth factor active in angiogenesis, vasculogenesis and endothelial cell growth. Induces endothelial cell proliferation, promotes cell migration, inhibits apoptosis and induces permeabilization of blood vessels. Binds to the FLT1/VEGFR1 and KDR/VEGFR2 receptors, heparan sulfate and heparin. NRP1/Neuropilin-1 binds isoforms VEGF-165 and VEGF-145. Isoform VEGF165B binds to KDR but does not activate downstream signaling pathways, does not activate angiogenesis and inhibits tumor growth. Binding to NRP1 receptor initiates a signaling pathway needed for motor neuron axon guidance and cell body migration, including for the caudal migration of facial motor neurons from rhombomere 4 to rhombomere 6 during embryonic development.
Subcellular Location	Secreted. Note=VEGF121 is acidic and freely secreted. VEGF165 is more basic, has heparin-binding properties and, although a significant proportion remains cell-associated, most is freely secreted. VEGF189 is very basic, it is cell-associated after secretion and is bound avidly by heparin and the extracellular matrix, although it may be released as a soluble form by heparin, heparinase or plasmin.
Protein Families	PDGF/VEGF growth factor family
Database References	HGNC: 12680 OMIM: 192240 KEGG: hsa:7422 STRING: 9606.ENSP00000361125 UniGene: PMID: 29386057 VEGF and IL-8 play a prominent role in the pathogenesis of early forms of rosacea and the hemostasis system. PMID: 29578433 The Novel Short Isoform of Securin Stimulates the Expression of Cyclin D3 and Angiogenesis Factors VEGFA and FGF2, but Does Not Affect the Expression of MYC Transcription Factor PMID: 29989583 these results show peripheral blood levels of VEGF are significantly increased in colorectal patients PMID: 29924680 Study found that VEGF-A expression in the epidermis associated to the mechanism of facial reddened skin. PMID: 28677138 Quantitative analysis of VEGF-121 isoform in the plasma of patients with recurrent glioblastoma could be a promising predictor of response to anti-angiogenetic treatment. PMID: 29747600 Study evaluated for the first time the plasma levels and the diagnostic usefulness of VEGF, MMP-9, and TIMP-1 in cervical cancer (CC), not only independently but especially in combination with established cervical tumor markers. All tested parameters showed statistical significance when compared their concentrations in patients with CC to healthy women. PMID: 30037277 Results showed that VEGF expression level was upregulated in gallbladder cancer (GBC) tissues and cell lines under a hypoxic condition. PMID: 30272364 these results indicate that sFlt-1 up-regulation by VEGF may be mediated by the VEGF/Flt-1 and/or VEGF/KDR signaling pathways. PMID: 29497919 lncRNA TDRG1 may promote endometrial carcinoma cell proliferation and invasion by positively targeting VEGF-A and modulating relative genes. PMID: 29920344 The data of this study indicated that the L-VEGF144 protein is not only a novel nucleolus protein but is likely to act as a mitogen to induce the proliferation of cancer cells. PMID: 29909500 Study shows that vascular endothelial growth factor A stimulates STAT3 activity via nitrosylation of myocardin to regulate the expression of vascular smooth muscle cell differentiation markers. PMID: 28572685 There is no association between the studied VEGF-A single nucleotide variations and the responses to intravitreal ranibizumab therapy in diabetic macular edema. However, the VEGF-A rs833069 gene polymorphism has a clear association with the severity of diabetic retinopathy. PMID: 29030794 None of the investigated VEGF-A gene polymorphisms was found to be an independent prognostic marker for infantile hemangioma. However, there is evidence that individuals carrying at least one G allele of +405 G/C VEGF-A polymorphism have significantly lower risk of IH. PMID: 29984822 This study showed that CIC haplotype of VEGF gene may be important risk factor for urothelial bladder cancer development in Tunisia. PMID: 29959793 FABP5 promotes tumor angiogenesis via activation of the IL6/STAT3/VEGFA signaling pathway in hepatocellular carcinoma. PMID: 29957468 This study did not identify a different VEGF 936CT genotype profile for patients with CHM who undergo SR versus those who progress to gestational trophoblastic neoplasia. However, the, results do suggest that this polymor- phism may affect susceptibility to complete hydatidiform-mole. Larger groups may improve the results of assessments of the predictive parameters of gestational trophoblastic neoplasia. PMID: 30383950 there may be an association between rs6993770 polymorphism of VEGF and Metabolic Syndrome PMID: 29891039 The data supports the assumption that C9 gene expression may stimulate the expression of inflammatory (NLRP3) and angiogenic growth factors (VEGF) in retinal pigment epithelial cells. PMID: 30090015 DEC2 could upregulate retinal VEGF gene expression through modulation of HIF1alpha levels under hypoxic conditions. PMID: 30250985 High expression of VEGF is associated with Oral Invasive Carcinomas. PMID: 30049191 High VEGF expression is associated with angiogenesis of esophageal squamous cell carcinoma. PMID: 30015941 VEGF-A was over-expressed in hypoxic glioblastoma-derived exosomes, which enhance the permeability of a blood-brain barrier in vitro model by interrupting the expression of claudin-5 and occludin. PMID: 29787762 Single CpG methylation appears to enhance VEGF G4 thermostability in a manner dependent on both the CpG methylation site and cation type PMID: 29940278 shear stress was able to induce arterial endothelial differentiation of stem cells from human exfoliated deciduous teeth, and VEGF-DLL4/NotchEphrinB2 signaling was involved in this process. PMID: 30015843 Data indicate that CD147 promotes breast cancer cell proliferation, metastasis, and invasion by modulating matrix metalloproteinase 9 (MMP-9) and vascular endothelial growth factor (VEGF) expression. PMID: 29901696 Our data demonstrated that the expression of VEGF was significantly related to the tumor incidence, metastasis and prognosis of patients with gastric cancer, which provides new leads to the diagnosis of gastric cancer. PMID: 29914006 High VEGFA expression is associated with increased lymphangiogenesis and lymph node metastasis in prostate adenocarcinoma. PMID: 29544697 VEGF/PKD-1 signaling axis increases angiogenic and arteriogenic gene expression. These studies suggest that the axis may regulate arteriolar differentiation through changing microvascular endothelial cells gene expression. PMID: 29380239 widely stained in sclerosing stromal tumours of the ovary PMID: 29433373 Study shows how vascular endothelial growth factor regulates protein kinase CbetaII (PKCbeta) promoter function in chronic lymphocytic leukaemia cells, stimulating PKCbeta gene transcription via increased association of SP1 and decreased association of STAT3. PMID: 28233872 Our study suggests that VEGF kinetics is a prognostic factor for locally advanced esophageal squamous cell carcinoma patients receiving curative concurrent chemoradiotherapy. For these patients, lower post-treatment VEGF levels and decreasing levels of VEGF during CCRT are significantly associated with better clinical outcomes. PMID: 30126380 These results suggest that DMBT can inhibit CNV by down-regulation of VEGF in retina through Akt/NF-kappaB/HIF-1alpha and ERK/Nrf2/HO-1/HIF-1alpha pathway. DMBT might be a promising lead molecule for anti-CNV and serve as a therapeutic agent to inhibit CNV. PMID: 29446046 the expression of MMIF, HIF-1alpha, and VEGF in the serum and endometrial tissues may be used to assess the stage of endometriosis and the severity of dysmenorrhea. PMID: 30074218 H3K27me3 and VEGF expression are both significantly associated with overall survival of synovial sarcoma, and H3K27me3 is a significant independent prognostic indicator in patients with synovial sarcoma PMID: 29803658 Study showed evidence that the VEGF rs699947 polymorphism was obviously associated with an increased risk of bladder cancer and renal cell carcinoma, particularly in Asian population, while no significant association was observed in overall urologic neoplasms. [review] PMID: 30195633 Low VEGFA expression is associated with Breast Cancer. PMID: 28744693 these findings indicated that miR655 may inhibit epithelial ovarian cancer (EOC)cell proliferation and invasion by repressing VEGF. Thus, the miR655/VEGF pathway could serve as a novel therapeutic target for patients with EOC. PMID: 29845206 The VEGF protein expression in gastric cancer tissues is positively correlated with TNM staging and lymph node metastasis in patients. The preoperative prediction results of MRI are well consistent with postoperative pathological results, and MRI features are correlated with lymph node metastasis in patients, which has an important guiding significance for the diagnosis and treatment of gastric cancer. PMID: 30010108 ADM was an upstream molecule of HIF-1alpha/VEGF and it promoted angiogenesis through upregulating HIF-1alpha/VEGF in epithelial ovarian cancer. PMID: 28091613 The expression of VEGF was negatively correlated with miR1. PMID: 29845255 EDF1 is required for VEGF-induced activation of the transcriptional activity of PPARgamma in HUVEC cells. PMID: 29933613 Studied vascular endothelial growth factor A (VEGFA) gene +936T/C single nucleotide polymorphism; found it has no significant correlation with biliary atresia in the Southern Chinese Han population. PMID: 29251369 miR125 targeted and inhibited the expression of VEGF through target sites located in the 3' untranslated region of VEGF mRNA. PMID: 29693153 higher levels of IL-6 and VEGF-A were significantly associated with shorter progression free survival in epithelial ovarian cancer PMID: 29572186 results suggest that PEDF act as a multipotent factor in the skin and the imbalance of PEDF and VEGF may be responsible for the transformation from normal skin to psoriasis. PMID: 29579411 RTPCR analysis revealed that the expression levels of COX2 and VEGF were downregulated following morusin treatment... morusin significantly inhibited the proliferation of the lung cancer cell line A549, and may have affected the invasion and migration of the cells by downregulating the expression of tumor angiogenesisrelated genes. PMID: 29749480 These results suggest that VM formation is increased by EBVLMP1 via VEGF/VEGFR1 signaling and provide additional information to clarify the role of EBVLMP1 in nasopharyngeal carcinoma (NPC)pathophysiology PMID: 29749553 Data suggest that expression of mRNA for ghrelin and VEGFA are up-regulated in endometrium of women with recurrent miscarriage; thus, ghrelin and VEGFA may play roles in pathogenesis of recurrent miscarriage. These case-control studies were conducted with endometrial tissue obtained during secretory phase of menstrual cycle. (VEGFA = vascular endothelial growth factor A) PMID: 29221937 AEG-1 was found to be significantly associated with hypoxia in ovarian cancer by regulating the HIF-1alpha/NF-kappaB/VEGF pathway. PMID: 29770329

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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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