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The pursuit of effective therapeutic strategies often hinges on understanding and modulating complex biological interactions. One such critical interaction involves ICAM-1 (Intercellular Adhesion Molecule 1), also known as CD54, a key player in cellular responses in inflammation, injury, and immune processes. For researchers investigating conditions where ICAM-1 plays a significant role, such as autoimmune diseases, transplant rejection, or inflammatory disorders, the ability to inhibit its function is paramount. This is where ICAM inhibitor peptides come into play, offering targeted approaches to disrupt these interactions. This article explores the landscape of where to buy peptide inhibitors of ICAM-1, focusing on the scientific basis and availability of these crucial research tools.

Understanding the Role of ICAM-1 and Peptide Inhibitors

ICAM-1 is a transmembrane glycoprotein that mediates cell-cell adhesion, particularly between leukocytes and endothelial cells. This adhesion is critical for immune cell migration to sites of inflammation. The leukocyte function-associated antigen-1 (LFA-1), a receptor on leukocytes, is a primary binding partner for ICAM-1. Disrupting the ICAM-1/LFA-1 interaction has been shown to suppress the progression of various diseases.

Peptides derived from the sequences of ICAM-1 and LFA-1 have emerged as potent modulators of this interaction. These peptides can bind to ICAM-1, effectively blocking the binding of LFA-1 and thereby inhibiting leukocyte adhesion and activation. Research has demonstrated that both linear and cyclic peptides can be effective. For instance, studies have shown that cyclic peptide 1 can bind to the D1-domain of ICAM-1 and inhibit ICAM-1/LFA-1-mediated homotypic and heterotypic T-cell adhesion. Furthermore, cyclic peptides have shown efficacy in inhibiting T cell function. The development of ICAM-1 Blocking Peptide is also crucial for antibody-based research, allowing for the validation of ICAM-1 specific antibodies.

Availability of ICAM Inhibitor Peptides: Where to Buy

When looking to buy peptide inhibitors for ICAM-1, researchers will find a range of options from specialized biotechnology suppliers. These suppliers often offer a catalog of ICAM-1/CD54 Small Molecules and Peptides, providing researchers with the tools they need to advance their studies.

* Research Reagent Suppliers: Companies like Bio-Techne offer a selection of ICAM-1/CD54 Small Molecules and Peptides, alongside other high-quality reagents and services. These platforms are valuable for sourcing specific compounds for *in vitro* and *in vivo* research.

* Custom Peptide Synthesis: For highly specific research requirements, custom peptide synthesis services are available. These services allow researchers to design and order peptides with unique sequences or modifications, such as those that mimic specific binding domains or possess enhanced stability.

* Antibody Blocking Peptides: For researchers working with antibodies targeting ICAM-1, ICAM-1 Blocking Peptide is a critical reagent. These peptides are synthesized to correspond to the epitope recognized by the antibody, allowing for validation and blocking experiments. For example, a synthetic peptide sequence used to generate an antibody can be purchased as a blocking reagent. Some suppliers explicitly state that ICAM-1 Blocking Peptide is available at Gentaur for Next week delivery, indicating a focus on timely provision for urgent research needs.

* Specific Inhibitor Compounds: Beyond peptides, small molecule inhibitors that target ICAM-1 are also available. For instance, A-205804 is described as an orally bioavailable, potent, and selective inhibitor of E-selectin and ICAM-1 expression, with reported IC50 values of 20 nM and 25 nM for E-selectin, respectively. These small molecules can offer different pharmacokinetic profiles and modes of action compared to peptides.

Key Considerations for Purchasing ICAM Inhibitor Peptides

When selecting where to buy ICAM inhibitor peptides, consider the following:

* Purity and Characterization: Ensure the supplier provides detailed information on the purity and characterization of their peptides. High-purity peptides are essential for reliable experimental results.

* Specificity: Verify the specificity of the inhibitor peptide for ICAM-1. Off-target effects can confound research outcomes.

* Formulation: Understand the available formulations (e.g., lyophilized powder, solution) and storage requirements.

* Quantity and Pricing: Evaluate the available quantities and pricing to match your research budget and experimental scale. For example, some suppliers offer bulk purchasing options, such as the InVivoMAb anti-mouse CD54 (ICAM-1), which is available in various quantities and price points.

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