Pluripotent stem cell production system

Patent metadata

Field	Value
Publication number	US-11912977-B2
Application number	US-202217817287-A
Country	US
Kind code	B2
Filing date	Aug 3, 2022
Priority date	Aug 31, 2015
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A stem cell production system provided with a preintroduction cell-feeding solution channel 20 through which a solution containing cells passes, an induction factor-feeding solution mechanism 21 for feeding a pluripotency induction factor to the preintroduction cell-feeding solution channel 20 , a factor introduction device 30 connected to the preintroduction cell-feeding solution channel 20 for making cells with induction factor introduced by introducing the pluripotency induction factor into the cells, a cell mass-making device 40 for making multiple cell masses comprising stem cells by culturing the cells with induction factor introduced, and a packaging device 100 for sequentially packaging each of the multiple cell masses.

First claim

The invention claimed is:

1. A method for producing an induced pluripotent stem cell comprising:
transporting a cell-containing solution comprising cells through a preintroduction cell solution-feeding channel to a factor introducing device connected to the preintroduction cell solution-feeding channel,
transporting pluripotency inducing factors from a factor storing unit that preserves the pluripotency inducing factors to the factor introducing device through a factor solution-feeding channel,
introducing the pluripotency inducing factors into the cells to prepare cells comprising factor-introduced cells in the factor introducing device, and
culturing the factor-introduced cells to prepare a cell mass or a plurality of cell masses comprising induced pluripotent stem cells in a cell mass preparation device,
wherein the cell mass preparation device comprises an initializing culturing apparatus that cultures the factor-introduced cells, and
wherein the factor introducing device is non-rotatable.

2. The method according to claim 1 , wherein the cell mass preparation device further comprises an amplifying culture apparatus that amplifies the factor-introduced cells, and
wherein the method further comprises amplifying culturing the factor-introduced cells in the amplifying culture apparatus.

3. The method according to claim 1 , wherein a pump feeds a solution containing the pluripotency inducing factors from the factor storing unit to the factor introducing device through the factor solution-feeding channel.

4. The method according to claim 1 , wherein the inducing factors are introduced into the cells by RNA lipofection in the factor introducing device.

5. The method according to claim 1 , wherein the inducing factors comprise at least one selected from the group consisting of DNA, RNA, and protein.

6. The method according to claim 1 , wherein the inducing factors are incorporated into a vector.

7. The method according to claim 6 , wherein the vector comprises Sendai virus vector.

8. The method according to claim 1 , wherein the factor introducing device further comprises a pump for streaming liquid comprising the inducing factors in the factor solution-feeding channel, and
wherein the pump is a diaphragm pump, a tubing pump, or a peristaltic pump.

9. The method according to claim 1 , wherein the initializing culturing apparatus comprises a suspension culture vessel that comprises:
a semipermeable membrane in which the factor-introduced cells and culture medium have been inserted; and
a vessel in which the semipermeable membrane is placed, and
the culture medium is situated around the periphery of the semipermeable membrane.

10. The method according to claim 1 , further comprising delivering the factor-introduced cells from the factor introducing device to the initializing culturing apparatus through a cell solution-feeding channel.

11. The method according to claim 2 , wherein the amplifying culturing apparatus comprises:
a suspension culture vessel that comprises a semipermeable membrane in which the cell mass or the plurality of cell masses and a medium have been inserted; and
a vessel in which the semipermeable membrane is placed, and
the culture medium is situated around the periphery of the semipermeable membrane.

12. The method according to claim 2 , further comprising delivering the factor-introduced cells from the initializing culturing apparatus to the amplifying culturing apparatus through a cell solution-feeding channel.

13. The method according to claim 2 , further comprising connecting the inside of a semipermeable membrane of a suspension culture vessel of the initializing culturing apparatus with the inside of a semipermeable membrane of a suspension culture vessel of the amplifying culturing apparatus by a cell solution-feeding channel,
wherein the factor-introduced cells and a medium are entered into the semipermeable membrane of the suspension culture vessel of the initializing culturing apparatus, and
wherein the cell mass or the plurality of cell masses and a medium are entered into the semipermeable membrane of the suspension culture vessel of the amplifying culturing apparatus.

14. The method according to claim 2 , wherein the cell mass preparation device further comprises:
a first dissociator that dissociates the cell mass or the plurality of cell masses comprising induced pluripotent stem cells into at least one first cell mass; and
a second dissociator that dissociates the cell mass or the plurality of cell masses comprising induced pluripotent stem cells into at least one second cell mass, the at least one second cell mass comprising or consisting of cells that have been amplified.

15. The method according to claim 14 , wherein the first dissociator is provided in a cell solution-feeding channel that connects the initializing culturing apparatus to the amplifying culturing apparatus.

16. The method according to claim 14 , further comprising dissociating the cell mass or the plurality of cell masses into single cells with at least one of the first or second dissociators.

17. The method according to claim 14 , wherein at least one of the first or second dissociators comprise a dissociator having a through-hole in the interior, the through-hole having large pore size sections and small pore size sections connecting with the large pore size sections,
wherein the large pore size sections and small pore sections alternate, and the cell mass or the plurality of cell masses flows through the through-hole.

18. The method according to claim 14 ,
at least one of the first or second dissociators comprise a connecting block with a through-hole provided in the interior of the connecting block, the connecting block comprising a first edge and a second edge,
wherein a recess is provided at the first edge of the connecting block and a protrusion is provided at the second edge of the connecting block, and
wherein protrusions engage with recesses of adjacent connecting blocks, and
the through-hole has a first large pore size section that connects with the recess, a small pore size section that connects with the first large pore size section and has a smaller pore size than the first large pore size section, and a second large pore size section that connects with the small pore size section, the second large pore size section having a larger pore size than the small pore size section and an opening at the tip of the protrusion, and
the at least one first cell mass or the at least one second cell mass flows through the through-hole.

19. The method according to claim 1 , further comprising packaging the cell mass or the plurality of cell masses in a packaging device.

20. The method according to claim 19 , wherein the packaging device freezes the cell mass or the plurality of cell masses.

21. The method according to claim 1 , wherein a solution exchanger is connected to the cell mass preparation device or the initializing culturing apparatus, the solution exchanger comprising:
a tubular component;
a liquid permeable filter disposed inside the tubular component; and
a cell mass introduction hole disposed inside the tubular component for introduction of solution from the cell mass preparation device or the initializing culturing apparatus onto the liquid permeable filter;
an exchange solution introduction hole for introduction of exchange solution onto the liquid permeable filter;
a cell mass outflow hole for outflow of the exchange solution including the onto

Assignees

• I Peace Inc
• Tanabe Koji

Inventors

• Tanabe Koji
• Kelly Brendan
• Suto Kenta
• Shimoda Hidenori
• Hiraide Ryoji

Classifications

• C12N5/0634

  Cells from the blood or the immune system · CPC title

• C12M41/48 Primary

  Automatic or computerized control (automatic analysis G01N35/00) · CPC title

• C12M23/28

  disposable or single use · CPC title

• C12M23/44

  Multiple separable units; Modules · CPC title

• C12M27/00

  Means for mixing, agitating or circulating fluids in the vessel (by introduction of gas C12M29/06, C12M29/14, mixing in general or mixers per se B01F; mixing in apparatus for chemical or physical processes B01J) · CPC title