The study found a new anticoagulant protein from the saliva of medicinal leeches, which showed strong ability to suppress blood coagulation.
This protein was tested against commonly used anticoagulants like hirudin and demonstrated superior inhibition in certain assays, though hirudin had better results in direct thrombin inhibition tests.
The newly identified protein shares similarities with antistatin, indicating it could potentially inhibit other proteins involved in blood coagulation.
Recombinant proteins from E. coli often have endotoxin contamination, which complicates their use.
Two methods were tested to create E. coli strains with lower lipopolysaccharide (LPS) levels: knocking out genes in the LPS biosynthesis pathway and increasing YciM protein expression.
Both approaches successfully reduced endotoxin levels in the purified eGFP samples.