Multiplexed microfluidic platform for stem-cell derived pancreatic islet ß cells.
Lab Chip
; 22(22): 4430-4442, 2022 11 08.
Article
in En
| MEDLINE
| ID: mdl-36305868
ABSTRACT
Stem cell-derived ß cells offer an alternative to primary islets for biomedical discoveries as well as a potential surrogate for islet transplantation. The expense and challenge of obtaining and maintaining functional stem cell-derived ß cells calls for a need to develop better high-content and high-throughput culture systems. Microphysiological systems (MPS) are promising high-content in vitro platforms, but scaling for high-throughput screening and discoveries remain a challenge. Traditionally, simultaneous multiplexing of liquid handling and cell loading poses a challenge in the design of high-throughput MPS. Furthermore, although MPS for islet ß culture/testing have been developed, studies on multi-day culture of stem-cell derived ß cells in MPS have been limited. We present a scalable, multiplexed islet ß MPS device that incorporates microfluidic gradient generators to parallelize fluid handling for culture and test conditions. We demonstrated the viability and functionality of the stem cell-derived enriched ß clusters (eBCs) for a week, as assessed by the â¼2 fold insulin release by the clusters to glucose challenge. To show the scalable multiplexing for drug testing, we demonstrated the loss of stimulation index after long-term exposure to logarithmic concentration range of glybenclamide. The MPS cultured eBCs also confirmed a glycolytic bottleneck as inferred by insulin secretion responses to metabolites methyl succinate and glyceric acid. Thus, we present an innovative culture platform for eBCs with a balance of high-content and high-throughput characteristics.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Islets of Langerhans
/
Insulin-Secreting Cells
Language:
En
Journal:
Lab Chip
Year:
2022
Document type:
Article