Enabling peristalsis of human colon tumor organoids on microfluidic chips.
Biofabrication
; 14(1)2021 10 25.
Article
in En
| MEDLINE
| ID: mdl-34638112
Peristalsis in the digestive tract is crucial to maintain physiological functions. It remains challenging to mimic the peristaltic microenvironment in gastrointestinal organoid culture. Here, we present a method to model the peristalsis for human colon tumor organoids on a microfluidic chip. The chip contains hundreds of lateral microwells and a surrounding pressure channel. Human colon tumor organoids growing in the microwell were cyclically contracted by pressure channel, mimicking thein vivomechano-stimulus by intestinal muscles. The chip allows the control of peristalsis amplitude and rhythm and the high throughput culture of organoids simultaneously. By applying 8% amplitude with 8 â¼ 10 times min-1, we observed the enhanced expression of Lgr5 and Ki67. Moreover, ellipticine-loaded polymeric micelles showed reduced uptake in the organoids under peristalsis and resulted in compromised anti-tumor efficacy. The results indicate the importance of mechanical stimuli mimicking the physiological environment when usingin vitromodels to evaluate nanoparticles. This work provides a method for attaining more reliable and representative organoids models in nanomedicine.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Organoids
/
Colonic Neoplasms
Limits:
Humans
Language:
En
Journal:
Biofabrication
Journal subject:
BIOTECNOLOGIA
Year:
2021
Document type:
Article
Affiliation country:
Country of publication: