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A technique for collection and cultivation of macrophages from Cynomolgus monkeys (Macaca fascicularis)
Abstract:
Several techniques were compared for collection of peritoneal mononuclear phagocytes from cynomolgus monkeys. A multiple-holed cannula proved superior to a hypodermic needle for the collection of peritoneal washings because it was not occluded by the omentum. With the cannula technique 55--70% of the harvest medium could be recovered from the peritoneal cavity with a yield of 2.5--5 x 10(5) macrophages per ml. A closed system for injecting and collecting harvest medium was better than a syringe in preventing bacterial contamination of peritoneal washings. After collection, cells were resuspended in growth medium to a concentration of 5 x 10(5) macrophages per ml, distributed into Leighton tubes, and incubated at 36 degrees C. After 12 hours, cultures were washed to remove non-adherent cells and refed with growth medium. This technique provided a sterile, reliable method for the collection and cultivation of macrophages from monkeys.
Insights
A novel cannula technique offers a superior method for collecting peritoneal macrophages from cynomolgus monkeys, ensuring sterile and reliable cell cultures for research.
Area of Science:
- Veterinary Science
- Immunology
- Primate Research
Background:
- Peritoneal macrophages play crucial roles in immune responses.
- Cynomolgus monkeys are valuable models for studying human diseases.
- Efficient collection and cultivation of primate macrophages are essential for research.
Purpose of the Study:
- To compare different techniques for collecting peritoneal mononuclear phagocytes from cynomolgus monkeys.
- To establish a sterile and reliable method for macrophage isolation and culture.
Main Methods:
- Comparison of a multiple-holed cannula versus a hypodermic needle for peritoneal lavage.
- Evaluation of a closed system versus a syringe for medium injection and collection.
- Optimization of cell concentration and incubation conditions for macrophage cultivation.
Main Results:
- The multiple-holed cannula prevented omental occlusion, improving fluid recovery (55-70%).
- Macrophage yield ranged from 2.5-5 x 10^5 cells/ml.
- A closed system significantly reduced bacterial contamination compared to syringe methods.
Conclusions:
- A multiple-holed cannula and closed system provide a sterile, reliable method for collecting and cultivating cynomolgus monkey peritoneal macrophages.
- This optimized technique facilitates further immunological studies using primate models.
- The findings support the use of these macrophages in preclinical research and disease modeling.