Systems and methods for thawing cells using magnetic particles

Patent metadata

Field	Value
Publication number	US-12035709-B2
Application number	US-201916551998-A
Country	US
Kind code	B2
Filing date	Aug 27, 2019
Priority date	Aug 28, 2018
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

Embodiments herein relate to systems and methods for thawing cells using magnetic particles, such as Curie-magnetic or Néel-magnetic particles. In an embodiment, a cell storage medium for cryopreservation is included. The cell storage medium can include a cryoprotective agent; and a plurality of particles comprising a magnetic material. In an embodiment, a method for thawing a frozen cell sample is included. The method can include obtaining a frozen cell sample comprising particles, the particles comprising a magnetic material and applying an alternating electromagnetic field to the frozen cell sample to induce heating of the magnetic material. Other embodiments are also included herein.

First claim

The invention claimed is:

1. A cell storage medium for cryopreservation comprising:
i. a cryoprotective agent; and
ii. a plurality of round particles comprising a Curie-magnetic material or a Néel magnetic material, the Curie-magnetic material comprising a Curie temperature of 10 degrees Celsius to 45 degrees Celsius, and the Néel-magnetic material comprising a Néel temperature of 10 degrees Celsius to 45 degrees Celsius;
wherein the Curie-magnetic material or the Néel-magnetic material comprises at least two of: gadolinium, chromium (IV) oxide, iron (III) oxide, cerium, praseodymium, lanthanum, samarium, erbium, nickel, manganese, dysprosium, yttrium, samarium-cobalt magnet, terfenol-D, magnetite, graphene, and nanoglasses.

2. The cell storage medium of claim 1 , wherein the particles are hollow.

3. The cell storage medium of claim 2 , the hollow particles comprising an outer shell, wherein the Curie-magnetic material or the Néel-magnetic material is coated onto an outside surface of the outer shell.

4. The cell storage medium of claim 1 , the particles comprising two distinct regions, wherein one of the two regions has a density lower than 1 g/cm 3 .

5. The cell storage medium of claim 1 , the plurality of particles having an average Curie temperature of 10 degrees Celsius to 45 degrees Celsius, or an average Néel temperature of 10 degrees Celsius to 45 degrees Celsius, wherein the average Curie temperature or average Néel temperature is an average temperature value for materials of the particles reflecting the contribution of individual materials therein in proportion to their weight fraction of the overall weight of the particles.

6. The cell storage medium of claim 1 , wherein the Curie-magnetic material comprising a Curie temperature of 10 degrees Celsius to 40 degrees Celsius, or the Néel-magnetic material comprising a Néel temperature of 10 degrees Celsius to 40 degrees Celsius.

7. A frozen cell sample comprising:
i. a plurality of cells;
ii. a cell storage medium, the cell storage medium comprising
a cryoprotective agent; and
a plurality of round particles comprising a Curie-magnetic material or a Néel-magnetic material the Curie-magnetic material comprising a Curie temperature of 10 degrees Celsius to 45 degrees Celsius, and the Néel-magnetic material comprising a Néel temperature of 10 degrees Celsius to 45 degrees Celsius;

 wherein the Curie-magnetic material or the Néel-magnetic material comprises at least two of: gadolinium, chromium (IV) oxide, iron (III) oxide, cerium, praseodymium, lanthanum, samarium, erbium, nickel, manganese, dysprosium, yttrium, samarium-cobalt magnet, terfenol-D, magnetite, graphene, and nanoglasses.

8. The frozen cell sample of claim 7 , the frozen cell sample comprising stem cells.

9. The frozen cell sample of claim 7 , the plurality of particles having an average Curie temperature of 10 degrees Celsius to 45 degrees Celsius, or an average Néel temperature of 10 degrees Celsius to 45 degrees Celsius, wherein the average Curie temperature or average Néel temperature is an average temperature value for materials of the particles reflecting the contribution of individual materials therein in proportion to their weight fraction of the overall weight of the particles.

10. The frozen cell sample of claim 7 , wherein the Curie-magnetic material comprising a Curie temperature of 10 degrees Celsius to 40 degrees Celsius, or the Néel-magnetic material comprising a Néel temperature of 10 degrees Celsius to 40 degrees Celsius.

Assignees

• Boston Scient Scimed Inc

Inventors

• Weber Jan
• Chrobak Megan
• Villarreal Carolina

Classifications

• A01N1/125

  Freeze protecting agents, e.g. cryoprotectants or osmolarity regulators · CPC title

• A01N1/168 Primary

  using electromagnetic fields or radiation; using acoustic waves or corpuscular radiation · CPC title

• A01N1/0221

  Human Necessities · mapped topic

• A01N1/0294 Primary

  Human Necessities · mapped topic