Monoclonal antibodies are one of the most important and fastest growing biological drugs. IgG's are being purified using established DSP protocols and produced in kilogram scale. Recently, immunoglobulins M (IgM's) have become increasingly important as they have a different selectivity and can cope with certain diseases in a more efficient way.
IgM's are extremely large proteins (up to 1 M Da). As such they are more susceptible to shear forces that may occur during purification on chromatography columns. As well, they are less stable in lower pH or higher ionic-strength environment and prone to form aggregates. Therefore, the purification process that would completely overcome the above mentioned problems is still a challenge.
CIM® Monolithic columns can overcome some of these challenges. They have the open channel structure where large molecules can freely and openly be conveyed without any steric hindrances. Also, the contact time between the molecules and the stationary phase can be significantly reduced (a combination of a short separation layer and high volumetric flow rates applicable), thus substantially reducing the risks of negatively impacting the labile IgM molecules during purification process.
See how these features reflect in the applications presented below.
| A024 | Rapid Separation of IgG, IgA and IgM on a CIM® QA Disk Monolithic Column |
| A009 | Quantitative Determination of Human IgG by High-Performance Immunoaffinity Chromatography Using CIM® Protein A Disk |
| A019 | Separation of IgG, HSA and IgM Standard on CIM® EDA Monolithic Column |
| A010 | Isolation of Anti-Bradikinin IgGs from Crude Serum of Immunized Rabbit by High-Performance Immunoaffinity Chromatography Using CIM® Bradikinin Disk |
| P003 | Capacity Determination for Binding Human IgG to a CIM® SO3-8 Tube Monolithic Column For additional information please see the following: Poster |
| P004 | Productivity of Semi-Preparative Isolation of Immunoglobulins G from Human Plasma on CIM® Disk and CIM® Tube Protein G Monolithic Columns Versus Particle Based Agarose Supports For additional information please see the following: Poster |
| A004 | Conjoint Liquid Chromatography (CLC) Separation of Proteins from Mouse Ascites and Isolation of Monoclonal Antibody IgG in One Step Obtained by a Combination of CIM® QA and CIM® Protein A Disks |
More information on IgG and IgM purification/quantitation on CIM Monoliths can be found at Validated Biosystems Inc. website (courtesy of P. Gagnon).
See below a list of articles on Monolith IgG and IgM purification that are available in various on-line libraries such as ScienceDirect. Article abstracts are also available through our website's search engine - here.