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Pegylation

PEG extended vs coiled 2

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Calculating the Contour Length and Hydrodynamic Radius of Polyethylene Glycol in Aqueous Solutions

This post outlines the fundamental methods for calculating the contour length—the maximum extended chain dimension—and the hydrodynamic radius, which characterizes the effective size of the solvated coil. These calculations rely on established polymer physics and empirical relations from experimental data.

Model system for the transcyclization reaction.

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Improving the Stability of Maleimide–Thiol Conjugation for Drug Targeting

Abstract Maleimides are essential compounds for drug conjugation reactions via thiols to antibodies, peptides and other targeting units. However, one main drawback is the occurrence of thiol exchange reactions with, for example, glutathione resulting in loss of the targeting ability. A new strategy to overcome such retro-Michael exchange processes of maleimide–thiol conjugates by stabilization of […]

The next stop for PEGylated protein drugs: Biosimilar

Pegfilgrastim is a PEGylated form of the recombinant human granulocyte colony-stimulating factor analog filgrastim. It serves to stimulate the level of white blood cells. Pegfilgrastim has a human half-life of 15 to 80 hours, much longer than the parent filgrastim (3–4 hours). Pharma Companies & PEGylated Drug Development Multiple major pharma companies have been busy […]