Overview
Migration Inhibitory Factor (MIF) is a pivotal cytokine discovered for its role in inhibiting macrophage migration. It has since been identified as a pleiotropic protein with functions in immune regulation, inflammation modulation, and even carcinogenesis. MIF is produced by various cells including T-cells, macrophages, and pituitary cells, acting as both a cytokine and an enzyme. Structurally, MIF exhibits unique tautomerase and oxidoreductase activities, distinguishing it from other cytokines. Its involvement in pathological conditions like rheumatoid arthritis, sepsis, and cancer has made it a significant focus in biomedical research and therapeutic development.
Physical and Chemical Properties
MIF is a stable protein with a molecular weight of approximately 12.5 kDa, typically supplied as a lyophilized powder. It demonstrates solubility in standard aqueous buffers such as PBS, making it suitable for in vitro studies. The protein's tertiary structure includes a catalytic site responsible for its enzymatic activities, which contribute to its biological functions. Unlike many cytokines, MIF is pre-formed and stored in intracellular pools, allowing rapid release upon stimulation. Its stability under various pH conditions (5.0-8.0) and resistance to heat denaturation (up to 60°C) make it exceptionally durable compared to other signaling proteins.
Main Applications
In research settings, MIF is primarily used to study inflammatory diseases, autoimmune disorders, and tumor microenvironments. It serves as a biomarker in conditions like sepsis and rheumatoid arthritis, where its levels correlate with disease severity. Pharmaceutical companies investigate MIF inhibitors as potential therapeutics for these conditions. Beyond medicine, MIF finds application in basic immunology research to understand cytokine networks and macrophage biology. Recent studies explore its role in metabolic disorders and cardiovascular diseases, expanding its potential applications in drug discovery and diagnostic development.
Safety and Storage
As a bioactive protein, MIF requires careful handling to maintain stability and prevent contamination. Proper storage at -20°C in a desiccated environment is essential for long-term preservation. Reconstituted solutions should be aliquoted to avoid repeated freeze-thaw cycles, which can degrade the protein. Safety precautions include wearing gloves and lab coats to prevent skin contact, and working in a biosafety cabinet when handling powdered forms. Although not classified as highly hazardous, inhalation of lyophilized powder should be avoided. Waste disposal should follow institutional guidelines for biological materials.
B2B Procurement Guide
When procuring MIF for research or industrial use, prioritize suppliers that provide detailed certificates of analysis including endotoxin levels, purity (>95% by SDS-PAGE), and biological activity data. Reputable manufacturers typically offer validation documents such as mass spectrometry reports and Western blot analyses. Consider ordering small test quantities to verify performance before large-scale purchases. For therapeutic development projects, ensure the supplier complies with current Good Manufacturing Practice (cGMP) standards if applicable. Lead times for custom quantities may vary from 2-6 weeks depending on source and purification requirements.
Related Manufacturers
- 主营：试剂盒、ELISA试剂盒、科研ELISA试剂盒、PCR试剂盒、生化试剂盒
- 主营：elisa 试剂盒
- 主营：生化试剂盒、Pcr试剂盒、细胞、Elisa试剂盒、抗体
- 主营：ELISA试剂盒、PCR试剂盒、生化试剂盒、蛋白、抗体、细胞