Device for in-vitro modelling in-vivo tissues of organs

Patent metadata

Field	Value
Publication number	US-11473045-B2
Application number	US-201816051201-A
Country	US
Kind code	B2
Filing date	Jul 31, 2018
Priority date	Sep 5, 2013
Publication date	Oct 18, 2022
Grant date	Oct 18, 2022

Abstract

A device for in-vitro modelling in-vivo tissues of organs that includes a first body portion with at least one access chamber, a second body portion with at least one culturing chamber, and a culturing membrane dividing the at least one access chamber from the culturing chamber. The device further includes a third body portion with at least one actuation chamber having at least one limitation cavity, and an actuation membrane dividing the at least one culturing chamber from the at least one actuation chamber. With the device, a robust actuation system can be provided that does not depend on the mechanical properties of the actuation membrane material, nor on the pressure, and that allows to mimic three-dimensional deformations of the tissue, in particular of lung alveoli.

First claim

The invention claimed is:

1. A method of using a device for in-vitro modelling in-vivo tissues of organs, the device comprising a first body portion with a vertical through-hole forming at least one access chamber, a second body portion with a vertical through-hole forming at least one culturing chamber, and a culturing membrane dividing the at least one access chamber from the culturing chamber, the method comprising:
incubating cells by downwardly placing a drop of a culturing medium via the vertical through-hole of a first one of the first body portion and the second body portion on top of a first side of the culturing membrane;
flipping the first body portion and the second body portion together with the culturing membrane by about 180°; and
incubating further cells by downwardly placing a drop of a further culture medium via the vertical through-hole of a second one of the first body portion and the second body portion on top of a second side of the culturing membrane, wherein the culture medium comprises cells attaching to the first side of the culturing membrane when incubating the cells and/or the further culture medium comprises further cells attaching to the second side of the culturing membrane when incubating the further cells.

2. The method of claim 1 , wherein the device further comprises a perfusion channel with an inlet, an outlet, and the at least one culturing chamber, wherein the inlet, the at least one culturing chamber, and the outlet are connected.

3. The method of claim 2 , wherein incubating the cells on the first side of the culturing membrane comprises providing the cells through the inlet of the perfusion channel into the culturing chamber.

4. The method of claim 3 , wherein at least one of growth factors, chemicals, gases, nutrients drugs, xenobiotics, blood, or blood serum is provided through the inlet of the perfusion channel into the culturing chamber together with the cells.

5. The method of claim 2 , wherein incubating the further cells on the second side of the culturing membrane comprises providing the further cells into the access chamber.

6. The method of claim 5 , wherein at least one of growth factors, chemicals, gases, nutrients drugs, xenobiotics, blood or blood serum is provided into the access chamber together with the further cells.

7. The method of claim 1 , wherein the device further comprises a third body portion.

8. The method of claim 7 , wherein the third body portion comprises at least one actuation chamber with at least one limitation cavity, and an actuation membrane dividing the at least one culturing chamber from the at least one actuation chamber, wherein the method comprises actuating the culturing membrane by moving the actuation membrane.

9. The method of claim 7 , wherein the method comprises assembling the third body portion to the first body portion and the second body portion after flipping the first body portion and the second body portion together with the culturing membrane by about 180°.

10. The method of claim 7 , wherein the third body portion is assembled to the first body portion and the second body portion using a holder that uses a mechanic force, an electric force, a magnetic force, or a combination thereof.

11. The method of claim 7 , wherein the third body portion defines a closed culturing chamber limited by the culturing membrane.

12. The method of claim 1 , wherein the culturing membrane is porous.

13. The method of claim 1 , wherein the first side of the culturing membrane is opposite to the second side of the culturing membrane.

Assignees

• Univ Bern

Inventors

• Guenat Olivier Thierry
• Felder Marcel
• Stucki Andreas
• Stucki Janick Daniel
• Geiser Thomas

Classifications

• C12M21/08 Primary

  for producing artificial tissue or for ex-vivo cultivation of tissue (prostheses A61F2/00, grafts A61L27/00) · CPC title

• C12M35/08

  Chemical, biochemical or biological means, e.g. plasma jet, co-culture · CPC title

• C12M41/40

  of pressure · CPC title

• C12M25/04

  in combination with well or multiwell plates, i.e. culture inserts · CPC title

• C12M35/04

  Mechanical means, e.g. sonic waves, stretching forces, pressure or shear stimuli · CPC title