Improving Purity of Isolated Pancreatic Beta Cells
Author Information
Author(s): M. J. Smelt, M. M. Faas, B. J. de Haan, P. de Vos
Primary Institution: University Medical Centre Groningen
Hypothesis
Can the yield and purity of isolated rat beta cells be improved by manipulating FAD and NAD(P)H autofluorescence?
Conclusion
The study demonstrates that manipulating cellular FAD and NAD(P)H fluorescence can significantly improve the yield and purity of isolated beta cells.
Supporting Evidence
- Preincubation in MEM medium resulted in a beta-cell population with only 3.18% nonbeta-cell contamination.
- FAD fluorescence was significantly increased by incubating dispersed islets in culture medium supplemented with 20 mM D-glucose.
- Both D-glucose and amino acids influenced the autofluorescence of beta and nonbeta cells.
Takeaway
Scientists found a way to get more pure and healthy beta cells from rat pancreases by changing the food they give the cells before sorting them.
Methodology
Rat islets were isolated and dispersed into single cells, then sorted by flow cytometry based on FAD and NAD(P)H autofluorescence after preincubation in different culture media.
Limitations
The method still results in some alpha-cell contamination, and the effects of other factors in the culture media were not fully explored.
Participant Demographics
Pathogen-free inbred male Lewis rats weighing 300–320 g were used as islet donors.
Statistical Information
P-Value
P = .03
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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