用于有效地从蛋白质溶液中去除内毒素的Polymyxin B功能化冷凝的制备
Peiji Liu1, Hong Lin1, Jingxue Wang1
1College of Food Science and Engineering, Ocean University of China, Huangdao Campus, Qingdao 266400, China.
Gels (Basel, Switzerland)
|June 25, 2025
概括
一种新型的冷凝吸附剂有效地从蛋白质样本中去除内毒素,实现高效率和恢复. 这种可重复使用的材料增强了生物制药生产和临床应用.
科学领域:
- 生物材料科学 生物材料科学
- 生物化学 生物化学
- 分离科学 分离科学
背景情况:
- 传统的内毒素吸附剂与高度样本作斗争,显示低效率和糟糕的恢复.
- 限制包括复杂的生物矩阵中的性能降低和样本损失.
研究的目的:
- 开发一种新型的冷凝吸附剂,以有效地去除内毒素.
- 用高度蛋白质样本改善样本回收和性能.
主要方法:
- 通过使用烯胺 (AM) 和基乙基甲酸盐 (HEMA) 合成了一个冷凝 (CG(HEMA-co-AM)).
- 优化了环氧化和多氧素B (PMB) 结合,以产生CG ((HEMA-co-AM) @ECH@PMB.
- 进行了流通实验,以评估内毒素去除效率和吸附能力.
主要成果:
- 在缓冲剂中达到99.82%的内毒素去除效率在6毫升/分钟,具有1408.38欧盟/毫克的吸附能力.
- 在一个复杂的蛋白质系统 (BSA,HSA,Hb,LYS,OVA在10 mg/mL) 中证明了99.62%的内毒素去除.
- 确定了pH值和离子强度作为通过疏水和静电相互作用影响吸附的关键因素;蛋白质回收因疏水性和电荷而异.
结论:
- 功能化的冷凝提供了高的内毒素吸附能力和特异性.
- 它的巨孔结构适合动态色谱分离.
- 呈现了一种可重复使用的吸收剂,用于生物制药生产和临床血液净化中的内毒素去除.
相关概念视频
Detergent Purification of Membrane Proteins
Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
Immunoprecipitation
Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
Production of Antibiotics
Penicillin, one of the earliest and most widely used antibiotics, is produced industrially by the filamentous fungus Penicillium chrysogenum. Large stirred-tank bioreactors ranging from tens to hundreds of thousands of liters maintain tightly controlled temperature, pH, and dissolved oxygen conditions to support fungal metabolism and maximize antibiotic yield. Penicillin is a secondary metabolite, synthesized primarily during the stationary growth phase, which requires a carefully managed...
Inhibitors of Gram-positive Cell Wall Synthesis
Bacterial cell walls are typically rigid structures composed mainly of peptidoglycan, a mesh-like polymer that provides mechanical strength and maintains cell shape. The synthesis of peptidoglycan is a crucial process in bacterial growth and serves as a primary target for many antibiotics.Mechanism of Action of Beta-Lactam AntibioticsBeta-lactam antibiotics, such as penicillin, inhibit peptidoglycan synthesis in actively growing cells. These antibiotics share a characteristic four-membered...


