Recombinant Human Interleukin-4 (IL4) Protein (His), Active

Name: Recombinant Human Interleukin-4 (IL4) Protein (His), Active
Brand: Beta LifeScience
SKU: BLC-05428P
Availability: InStock

Greater than 95% as determined by SDS-PAGE.

Collections: All products, Buy cytokines, chemokines, and growth factors for research online, High-purity interleukins & receptors for research, High-quality cytokines for advanced research, High-quality recombinant proteins, Recombinant interleukin-4 (il-4) proteins

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Product Overview

Description	Recombinant Human Interleukin-4 (IL4) Protein (His), Active is produced by our Mammalian cell expression system. This is a full length protein.
Purity	Greater than 95% as determined by SDS-PAGE.
Endotoxin	Less than 1.0 EU/μg as determined by LAL method.
Activity	The ED50 as determined in a cell proliferation assay using TF-1 human erythroleukemic cells is less than 0.2 ng/ml.
Uniprotkb	P05112
Target Symbol	IL4
Synonyms	B cell growth factor 1; B cell IgG differentiation factor; B Cell Stimulatory Factor 1; B-cell stimulatory factor 1; BCGF 1; BCGF1; Binetrakin; BSF-1; BSF1 ; IGG1 induction factor; IL 4; IL-4; IL4; IL4_HUMAN; Il4e12; Interleukin 4; Interleukin 4 variant 2; Interleukin 4; isoform 1 ; Interleukin-4; Lymphocyte stimulatory factor 1; MGC79402; Pitrakinra
Species	Homo sapiens (Human)
Expression System	Mammalian cell
Tag	C-6His
Complete Sequence	HKCDITLQEIIKTLNSLTEQKTLCTELTVTDIFAASKNTTEKETFCRAATVLRQFYSHHEKDTRCLGATAQQFHRHKQLIRFLKRLDRNLWGLAGLNSCPVKEANQSTLENFLERLKTIMREKYSKCSS
Expression Range	25-153aa
Protein Length	Full Length of Mature Protein
Mol. Weight	16 kDa
Research Area	Immunology
Form	Lyophilized powder
Buffer	Lyophilized from a 0.2 μm filtered 1xPBS, pH 7.4
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	Participates in at least several B-cell activation processes as well as of other cell types. It is a costimulator of DNA-synthesis. It induces the expression of class II MHC molecules on resting B-cells. It enhances both secretion and cell surface expression of IgE and IgG1. It also regulates the expression of the low affinity Fc receptor for IgE (CD23) on both lymphocytes and monocytes. Positively regulates IL31RA expression in macrophages. Stimulates autophagy in dendritic cells by interfering with mTORC1 signaling and through the induction of RUFY4.
Subcellular Location	Secreted.
Protein Families	IL-4/IL-13 family
Database References	HGNC: 6014 OMIM: 147780 KEGG: hsa:3565 STRING: 9606.ENSP00000231449 UniGene: PMID: 30034292 Interleukin-4 induces a CD44high /CD49bhigh PC3 subpopulation with tumor-initiating characteristics. PMID: 29236307 Allelic polymorphism C590T of the gene IL-4 is the most possible genetic marker of high predisposition to development of recurrent episodes of acute obstructive bronchitis in children. PMID: 30480406 certain single nucleotide polymorphisms of IL4 gene could predispose individuals to recurrent aphthous stomatitis PMID: 29985726 Germline variants in IL4 gene are associated with prostate cancer. PMID: 29298992 The role of IL-4 in psoriasis. PMID: 28064550 By establishing that IL-4 is posttranslationally regulated by TRX-promoted reduction of a disulfide bond, our findings highlight a novel regulatory mechanism of the type 2 immune response that is specific to IL-4 over IL-13. PMID: 30104382 IL-4 polymorphisms might be associated with Kawasaki disease in an Iranian population. PMID: 28036156 association between root resorption and IL4 gene polymorphisms was observed. PMID: 28617966 these results demonstrated that variable number tandem repeat polymorphism in the IL-4 gene is associated with diabetic peripheral neuropathy in type 2 diabetes patients with coexisting cardiovascular disease PMID: 29182400 serum antibodies against HP-NAP represent a state of risk, which is further exacerbated in IL-4 -590 T carriers. PMID: 27677314 Polymorphisms at IL10 (-1082 G>A), IL4 (-589 C>T), CTLA4 (+49A>G), and DAO (+8956 C>G) genes were studied in 55 cases. PMID: 28750137 Defective sirtuin-1 was found to increase IL-4 expression through acetylation of GATA-3 in patients with severe asthma compared with healthy controls. PMID: 26627546 The results confirmed that the IL-4-590C/T polymorphism is correlated with the onset of RA and that carrying the T-allele can significantly increase the risk of rheumatoid arthritis in the Chinese Han population. PMID: 28975976 the IL-4-590 C>T polymorphism does not influence the development of head and neck cancer. PMID: 29185028 the present study suggests that IL-4 polymorphisms might play a role in susceptibility to inflammatory bowel disease and its major subtypes in the Iranian population PMID: 28872970 IL-4R plays an important role in regulating hepatocellular carcinoma (HCC)cell survival and metastasis, and regulates the activity of the JAK1/STAT6 and JNK/ERK1/2 signaling pathways. We therefore suggest that IL-4/IL-4R may be a new therapeutic target for HCC PMID: 28665449 IL-4 rs2227288 and IL-10 rs1800872 may contribute to an increased risk for virus-induced encephalitis. Through use of direct sequencing, we showed that genotypes of IL-4 rs2227288 and IL-10 rs1800872 may have particular host susceptibility to virus-induced encephalitis. IL-4 rs2227283 and IL-10 rs1800871 have no correlation in with risk of virus-induced encephalitis (both P>0.05) PMID: 28935853 IL-4 and IL-8 genetic polymorphisms determine susceptibility to chronic Aggregatibacter actinomycetemcomitans periodontitis. PMID: 28859277 The data indicate that USP4 interacts with and deubiquitinates IRF4, and also stabilizes IRF4 protein and promotes IRF4 function to facilitate IL-4 expression in Th2 cells, which may be related to the pathological process of rheumatic heart disease. PMID: 28791349 Results show that higher levels of black carbon (BC) were associated with lower methylation of IL4 promoter CpG-48 5 days later and increased FeNO. The magnitude of association between BC exposure and demethylation of IL4 CpG-48 measured 5 days later appeared to be greater among seroatopic children, especially those sensitized to cockroach allergens. PMID: 28588744 Association between the TT-genotype of IL-4 rs2070874 polymorphism and a severe phenotype of viral-induced wheeze further underlines the role IL-4 plays in the inflammation pathway leading to viral respiratory infections. PMID: 28950434 the effects of IL4 gene polymorphisms on cancer risk may vary by cancer type and by ethnicity. PMID: 28656227 these results showed that allergy responses further accelerated the IL-4-induced inhibition of tumor development through the activation of STAT6 pathways. PMID: 28587956 we identified a subgroup of CVID patients with defective IL-4 signaling in T cells, with severe clinical features of inflammation and autoimmunity. PMID: 28476239 The difference between allelic and genotypic frequencies of interleukin-4 (-590C/T) between patients and controls was not significant (p = 0.46). PMID: 29372577 Data suggest that miRNA-340/429, which targeted IL-4, might be a potential approach for cancer treatment. PMID: 27895317 this paper shows that expression of non-secreted IL-4 is associated with histone deacetylase inhibitor-induced cell death, histone acetylation and c-Jun regulation in gamma/delta T-cells PMID: 27556516 Human CCL1 gene is selectively targeted by AhR in M(IL-4) macrophage. IL-4-induced epigenetic modification potentiates AhR-mediated CCL1 expression. PMID: 27888289 Liver IL-4 mRNA is downregulated in patients with pancreatic cancer and cachexia. PMID: 27897439 Low IL4 expression is associated with melanoma. PMID: 26993600 In this review, we discuss the molecular mechanisms driving IL-4 production in Th2 and Tfh cells. PMID: 27072069 In this review, we discuss the structural details of IL-4 and IL-4Ralpha subunit and the structural similarities between IL-4 and IL-13. We also describe detailed chemistry of type-I and type-II receptor complexes and their signaling pathways. Furthermore, we elaborate the strength of type-II hetero dimer signals in response to IL-4 and IL-13. PMID: 27165851 IL-4 and IL-17 modulate the functional activity of phagocytes in the maternal blood, cord blood, and colostrum of diabetic mother. PMID: 29135055 There was no significant difference in serum level of IL-4 between children with MPP (Mycoplasma pneumoniae pneumonia)and those with non-MPP. Among children with MPP, we found similar level of IL-4 regardless of the personal and family history of allergy and asthma or the presence of wheezing. PMID: 28057814 The functional promoter polymorphisms IL4-590C/T and IL6-174G/C, which affect the IL-4 and IL-6 levels in north Indian subjects, were associated with kidney dysfunction and CKD PMID: 27996163 Cellular Differentiation of Human Monocytes Is Regulated by Time-Dependent Interleukin-4 Signaling and the Transcriptional Regulator NCOR2. PMID: 29262348 CGRP and IL-4 positively regulated APN/CD13 expression and activity in psoriatic fibroblasts. PMID: 28387421 Results from these two large randomized aerobic exercise intervention trials suggest that aerobic exercise does not alter IL-10 or IL-4 in a manner consistent with chronic disease and cancer prevention. PMID: 27485297 IL-4 signaling up-regulates the IL-25 axis in human monocytic cells, and IL-25 may provide autocrine signals in monocytes and macrophages to sustain IL-17Rb expression and predispose to alternative activation. PMID: 28421819 IL4 VNTR B2 allele was only significantly associated with overall adiposity status before adjusting for ethnicity. PMID: 28293435 Our results showed the role of IL4 in promoting breast cancer aggressiveness PMID: 28400477 These data identified the IL-4/CXCL12 loop as a previously unrecognized pathway involved in lymphoid stroma polarization and as a potential therapeutic target in Follicular lymphoma patients. PMID: 28202459 IL-4 genetic variations associated with susceptibility to or protection against chronic periodontitis are directly associated with influencing the response of immune cells to periodontopathogens PMID: 28114408 in HIV/AIDS patients under antiretroviral therapy, IL-4 and IL-10 levels were significantly lower in lipodystrophy vs. non-lipodystrophy PMID: 28189545 autologous CD4(+) T cells that are exposed to EVs from CD40/IL-4-stimulated CLL cells exhibit enhanced migration, immunological synapse signaling, and interactions with tumor cells. PMID: 27118451 IL-4 substantially restores CD79b protein expression, sIgM expression, and BCR signaling. PMID: 27226435 Tandem repeat polymorphisms of IL4 is associated with the severity of chronic periodontitis. PMID: 28053321 Keratinocyte gene expression is critically shaped by IL-4, altering cell fate decisions, which are likely important for the clinical manifestations and pathology of allergic skin disease PMID: 27554818 Inhibition of protein kinase C zeta expression in prostate cancer cells promoted chemotaxis of peripheral macrophages and acquisition of M2 phenotypic features. These results were further supported by the finding that silencing of endogenous protein kinase C zeta promoted the expression of prostate cancer cell-derived interleukin-4 and interleukin-10 PMID: 28631559

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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.