Recombinant Human Cytotoxic T-Lymphocyte Associated Antigen-4

SKU:BHP11000417
Suppliers
ProSpec-Tany TechnoGene Ltd
ProSpec-Tany TechnoGene Ltd
Details Products
Overview
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RUO recombinant Cytotoxic T-Lymphocyte Associated Antigen-4 (Human) protein for mechanistic studies and assay development. Supplied as a traceable protein input (E. coli; >90% (SDS-PAGE) purity; sterile-filtered solution; MW 15.9 kDa) for reproducible assay inputs.
Target CELIAC3
Species Human
Options selector
Catalog no. Size
cyt-366-5UG 5 ug
cyt-366-25UG 25 ug
cyt-366-1MG 1 mg
Available Options

Select the variant that best fits your experiment. Availability and lead time may vary by option.

  • Options: Size (3) — 5 ug, 25 ug, 1 mg
  • Lead time: options listed as “in stock at manufacturer” typically ship in 5–7 business days; other statuses may take longer.
  • Storage: Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Avoid multiple freeze-thaw cycles.
  • Shipping: cold-chain shipment (typically with ice packs).
  • Upon receipt: store at the recommended temperature as soon as possible.
  • Sales terms and conditions: Please review prior to ordering.
Field Specification
Mfr No cyt-366
Alternative Names GSE, CD152, IDDM12, CELIAC3, CTLA-4.
Cellular Localization Cell membrane
Expression System
  • E. coli
Form Sterile filtered colorless solution.
Formulation The CTLA 4 solution (1mg/1ml) contains 20mM Tris-HCl buffer (pH 8.0), 0.4M urea and 10% glycerol.
Product Type
  • Proteins & Peptides
  • Cytokines and Growth Factors
  • Other Protein
Protein Length 149
Protein Size 15.9 kDa
Purity Greater than 90% as determined by SDS-PAGE.
Source Escherichia Coli.
Species Human
Storage Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Avoid multiple freeze-thaw cycles.
Target CELIAC3

Recombinant Human Cytotoxic T-Lymphocyte Associated Antigen-4 is supplied as a recombinant protein for in vitro research use.

Background

CTLA-4 is a member of the immunoglobulin superfamily and encodes a protein which transmits an inhibitory signal to T cells. The protein contains a V domain, a transmembrane domain, and a cytoplasmic tail. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. The membrane-bound isoform functions as a homodimer interconnected by a disulfide bond, while the soluble isoform functions as a monomer. Mutations in this gene have been associated with insulin-dependent diabetes mellitus, Graves disease, Hashimoto thyroiditis, celiac disease, systemic lupus erythematosus, thyroid-associated orbitopathy, and other autoimmune diseases.

Title: Cytotoxic T-Lymphocyte Associated Antigen-4 Human Recombinant: A Potential Immunotherapeutic Target Abstract: Cytotoxic T-lymphocyte associated antigen-4 (CTLA-4) is a key immune checkpoint receptor that plays a crucial role in regulating T-cell responses. This research paper provides an in-depth analysis of human recombinant CTLA-4, focusing on its production, characterization, and potential applications in immunotherapy. The paper discusses the significance of CTLA-4 in immune regulation, tumor immunity, and autoimmune diseases. Furthermore, it explores ongoing research and clinical trials investigating the therapeutic potential of recombinant CTLA-4 in various pathological conditions. The information presented in this paper aims to enhance our understanding of human recombinant CTLA-4 and its utility as a research tool and a potential immunotherapeutic agent. Introduction: Cytotoxic T-lymphocyte associated antigen-4 (CTLA-4) is a cell surface receptor primarily expressed on T-cells. It functions as a negative regulator of T-cell activation, dampening immune responses to prevent excessive inflammation. Human recombinant CTLA-4, produced through genetic engineering techniques, provides researchers with a valuable tool to study its biological functions and explore its therapeutic potential. Production and Characterization: Recombinant CTLA-4 is typically generated using expression systems such as mammalian cells or bacteria. The protein is then purified and characterized to ensure its structural integrity and functional activity. Quality control measures are implemented to confirm the specificity and bioactivity of the recombinant CTLA-4. Role in Immune Regulation: CTLA-4 plays a critical role in immune regulation by downregulating T-cell activation and suppressing immune responses. It competes with the co-stimulatory receptor CD28 for binding to its ligands, CD80 and CD86, on antigen-presenting cells. This interaction inhibits T-cell activation and promotes immune tolerance. Recombinant CTLA-4 serves as a valuable tool for studying immune checkpoint mechanisms and their impact on immune responses. Therapeutic Implications: The blockade of CTLA-4 has emerged as a promising immunotherapeutic strategy in cancer treatment. Monoclonal antibodies targeting CTLA-4, such as ipilimumab, have shown significant clinical efficacy in enhancing anti-tumor immune responses. Recombinant CTLA-4-based therapies, including fusion proteins and engineered T-cell receptors, are being explored as potential immunotherapeutic interventions. Additionally, CTLA-4 plays a role in autoimmune diseases, making it a potential target for the development of novel treatments. Conclusion: Human recombinant CTLA-4 is a valuable research tool and a potential immunotherapeutic target. Its production, characterization, and applications in immune regulation contribute to our understanding of T-cell biology and the development of novel immunotherapies. Continued research and clinical trials investigating the therapeutic potential of recombinant CTLA-4 offer promising prospects for improving outcomes in cancer and autoimmune diseases.

Product format

Provided as a recombinant protein suitable for in vitro workflows such as binding studies, screening, and assay development. Refer to the specifications table for expression format and molecular properties.

What is the purity of Recombinant Human Cytotoxic T-Lymphocyte Associated Antigen-4 (Human)?
Greater than 90% as determined by SDS-PAGE. BioHippo includes a Certificate of Analysis (CoA) confirming purity per lot with every order.
What buffer / formulation is this protein supplied in?
Supplied as: The CTLA 4 solution (1mg/1ml) contains 20mM Tris-HCl buffer (pH 8.0), 0.4M urea and 10% glycerol. Reconstitute lyophilized material in sterile ultrapure water or the recommended buffer per the datasheet prior to use.
How should Recombinant Human Cytotoxic T-Lymphocyte Associated Antigen-4 (Human) be stored?
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Avoid multiple freeze-thaw cycles. Prepare single-use aliquots after reconstitution to avoid repeated freeze–thaw cycles.
What expression system was used to produce this protein?
This recombinant protein was expressed in E. coli. The system was selected to achieve high yield, correct folding, and appropriate post-translational modifications.
Is this protein approved for clinical or in vitro diagnostic use?
No. Supplied for Research Use Only (RUO) — not intended for therapeutic applications or in vitro diagnostic procedures.
Can I request a custom size, tag variant, or formulation?
Yes. BioHippo can accommodate custom requests including alternative sizes, His/GST/Fc tag variants, bulk quantities, and custom formulations. See the Customization & Add-ons tab or email support@biohippo.com.

Can’t Find What You’re Looking For? We can help you source the best match or customize a recombinant protein solution for your study. Options may include species (human/mouse/rat), protein region/domain (full-length vs fragment), tag or label (His/GST/FLAG/biotin/fluorescent), expression system (E. coli/HEK293/insect), purity grade, formulation (buffer, carrier-free, glycerol-free), activity/functional validation (binding or enzymatic assays), endotoxin level (low-endotoxin for cell-based work), mutants/variants (point mutations, isoforms), and bulk or custom packaging. Click Talk to a Scientist to submit a request form, email us at support@biohippo.com, or explore our Research Services for additional support. Our team will be in contact with you shortly.

Bibliography: Pardoll, D. M. (2012). The blockade of immune checkpoints in cancer immunotherapy. Nature Reviews Cancer, 12(4), 252-264. Hodi, F. S., O'Day, S. J., McDermott, D. F., et al. (2010). Improved survival with ipilimumab in patients with metastatic melanoma. New England Journal of Medicine, 363(8), 711-723. Leach, D. R., Krummel, M. F., & Allison, J. P. (1996). Enhancement of antitumor immunity by CTLA-4 blockade. Science, 271(5256), 1734-1736. Walker, L. S., & Sansom, D. M. (2011). The emerging role of CTLA-4 as a cell-extrinsic regulator of T cell responses. Nature Reviews Immunology, 11(12), 852-863. Zhang, L., & Morgan, R. A. (2012). CTLA-4 blockade increases antigen-specific CD8+ T cells in prevaccinated patients with melanoma: three cases. Cancer Immunology, Immunotherapy, 61(6), 1047-1056.
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