Abstract
Venom from the ant Pseudomyrmex triplarinus reduces the symptoms and swelling of rheumatoid arthritis. The cells that produce the venom were dissected from larval and pupal ants and culture conditions studied. Cell dissociation, with minimal amount of damage, was done with 0.25% trypsin at 4 degrees C with subsequent use of soybean trypsin inhibitor. A new medium was formulated and epidermal growth factor, fibroblast growth factor, insulin, cAMP, cGMP, and isoproterenol were beneficial. The optimum osmotic pressure was a relatively high 500 mOSM. Conditioning the medium with an established insect cell line was essential for long-term cell survival. Under these culture conditions the structural and metabolic integrity of the cells were maintained for up to 12 mo.
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