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Published on: November 22, 2011
A procedure for isolation and partial purification of guinea pig lung mast cells
Abstract:
Pulmonary mast cells were obtained from guinea pig lung using a combination of enzymatic digestion of tissue, centrifugal elutriation, and density gradient centrifugation on Percoll. In the initial procedure, lung tissue was enzymatically digested with collagenase and elastase in four 30 min incubations. Typically, monodispersed cell suspensions contained 4% mast cells. Further purification of these lung mast cells using elutriation and Percoll gradients consistently yielded mast cells of 40-78% (mean 51%) purity. These cells were morphologically intact, viable and found to be functional as determined by histamine release evoked by antigen and anti-guinea pig IgG1 antibody.
Insights
Researchers developed a method to isolate pure pulmonary mast cells from guinea pig lungs. This technique uses enzymatic digestion, elutriation, and Percoll gradients, yielding functional cells for allergy research.
Area of Science:
- Immunology
- Cell Biology
- Pulmonary Research
Background:
- Pulmonary mast cells play a crucial role in allergic responses.
- Efficient isolation of pure mast cells is essential for studying lung inflammation and asthma.
Purpose of the Study:
- To establish a reliable method for purifying pulmonary mast cells from guinea pig lung tissue.
- To ensure the isolated mast cells are morphologically intact, viable, and functionally active.
Main Methods:
- Enzymatic digestion of lung tissue using collagenase and elastase.
- Cell purification via centrifugal elutriation and Percoll density gradient centrifugation.
- Assessment of mast cell purity, morphology, viability, and function (histamine release).
Main Results:
- Initial cell suspensions contained approximately 4% mast cells.
- Combined elutriation and Percoll gradient purification yielded 40-78% pure mast cells (mean 51%).
- Isolated cells were morphologically intact, viable, and released histamine in response to stimuli.
Conclusions:
- The described multi-step procedure effectively isolates functional pulmonary mast cells from guinea pigs.
- This method provides a valuable tool for investigating mast cell-mediated pulmonary responses.
- The purified mast cells are suitable for immunological studies, particularly in allergy and asthma research.
