EP4171588A1 - Verfahren zur gewinnung von stammzellen - Google Patents
Verfahren zur gewinnung von stammzellenInfo
- Publication number
- EP4171588A1 EP4171588A1 EP21739434.5A EP21739434A EP4171588A1 EP 4171588 A1 EP4171588 A1 EP 4171588A1 EP 21739434 A EP21739434 A EP 21739434A EP 4171588 A1 EP4171588 A1 EP 4171588A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cannula
- bone
- stem cells
- vacuum
- bone marrow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 210000000130 stem cell Anatomy 0.000 title claims description 23
- 210000001185 bone marrow Anatomy 0.000 claims description 41
- 210000000988 bone and bone Anatomy 0.000 claims description 29
- 210000003414 extremity Anatomy 0.000 claims description 27
- 210000000689 upper leg Anatomy 0.000 claims description 18
- 210000002901 mesenchymal stem cell Anatomy 0.000 claims description 16
- 238000002266 amputation Methods 0.000 claims description 13
- 210000003958 hematopoietic stem cell Anatomy 0.000 claims description 10
- 206010012601 diabetes mellitus Diseases 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 4
- 201000001320 Atherosclerosis Diseases 0.000 claims description 2
- 208000008960 Diabetic foot Diseases 0.000 claims description 2
- 210000002082 fibula Anatomy 0.000 claims description 2
- 208000014674 injury Diseases 0.000 claims description 2
- 208000011580 syndromic disease Diseases 0.000 claims description 2
- 210000002303 tibia Anatomy 0.000 claims description 2
- 230000008733 trauma Effects 0.000 claims description 2
- 210000004504 adult stem cell Anatomy 0.000 abstract description 5
- 210000004027 cell Anatomy 0.000 description 9
- 238000000605 extraction Methods 0.000 description 8
- 230000003394 haemopoietic effect Effects 0.000 description 8
- 238000002659 cell therapy Methods 0.000 description 6
- 210000001519 tissue Anatomy 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 210000003995 blood forming stem cell Anatomy 0.000 description 4
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 210000000056 organ Anatomy 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001900 immune effect Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 238000002560 therapeutic procedure Methods 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000001574 biopsy Methods 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000002683 foot Anatomy 0.000 description 2
- 230000007954 hypoxia Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000000877 morphologic effect Effects 0.000 description 2
- 210000003049 pelvic bone Anatomy 0.000 description 2
- 238000002054 transplantation Methods 0.000 description 2
- 210000004291 uterus Anatomy 0.000 description 2
- 206010003504 Aspiration Diseases 0.000 description 1
- 206010017711 Gangrene Diseases 0.000 description 1
- 208000028782 Hereditary disease Diseases 0.000 description 1
- 208000037919 acquired disease Diseases 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 238000009583 bone marrow aspiration Methods 0.000 description 1
- 210000002798 bone marrow cell Anatomy 0.000 description 1
- 238000004113 cell culture Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000001671 embryonic stem cell Anatomy 0.000 description 1
- 210000002745 epiphysis Anatomy 0.000 description 1
- 238000001415 gene therapy Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000002489 hematologic effect Effects 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 210000001621 ilium bone Anatomy 0.000 description 1
- 230000028993 immune response Effects 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 230000000771 oncological effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000000614 rib Anatomy 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 210000001562 sternum Anatomy 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 238000011287 therapeutic dose Methods 0.000 description 1
- 210000003371 toe Anatomy 0.000 description 1
- 230000000472 traumatic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0652—Cells of skeletal and connective tissues; Mesenchyme
- C12N5/0669—Bone marrow stromal cells; Whole bone marrow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/28—Bone marrow; Haematopoietic stem cells; Mesenchymal stem cells of any origin, e.g. adipose-derived stem cells
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
Definitions
- the invention relates to cell technologies, namely to methods for obtaining stem toes from the bone marrow of limbs, in particular human limbs amputated above the thigh.
- the bone marrow is known to be a universal source of stem cells.
- a bone marrow puncture is usually required to obtain stem cells from the bone marrow.
- the iliac bones ie the pelvic bones, are punctured for this purpose. (Guide to Laboratory Hematology / B. Sisla; transl. From English, ed. By Al Vorobyov - M .: Practical Medicine, 2011. - 352 c.).
- the stem cell content is low (no more than 0.001%).
- a method for obtaining stem cells from bone marrow by extracting them from human tissue is known from the prior art. This method is discussed in the article by Machalinski B., et al. (Morphological analysis of the bone marrow biopsies derived from heparinized ca- daveric organ donors before and after disconnecting from the respirator, Morphsammlung, Ann Transplant. 2001; 6 (4 ⁇ : 48-52). The named article describes a method or study for the extraction of hematopoietic cells from Bone marrow obtained from the pelvic bone of human corpses by puncture.
- the objects of the invention are therefore: 1. Shortening the time of the stem cell production method,
- a method for obtaining adult stem cells comprising the steps of: a. Providing a portion of a subject's bone severed from the remainder of the body, the bone having an open medullary cavity; b. Removal of the bone marrow from the medullary cavity with a vacuum aspirator or a sharp spoon;
- the cells are in particular non-embryonic stem cells, i.e. adult stem cells.
- c Isolation of stem cells from the bone marrow. Any bone that is precipitated during surgery on a living or dead, particularly living subject, can be used.
- Flat bones are understood here as the ilium, sternum, rib, etc. The advantage of using flat bones is that they contain hematopoietic stem cells in large numbers.
- tubular bones can be used.
- Tubular bones include the femur, tibia, fibula, and the like.
- the use of tubular bones has the advantage that they contain large numbers of mesenchymal stem cells.
- the method offers the advantage that bones or parts of bones that are present in limbs are also present. Such parts occur in particular with medically necessary amputations.
- the method can also include: a. Providing an amputated part of a limb of a subject severed from the rest of the body, the part of the limb having an open marrow bone; b. Removal of the bone marrow from the medullary cavity with a vacuum aspirator or a sharp spoon; c. Isolation of the stem cells from the bone marrow.
- the removal can take place by means of a (manual) vacuum suction device.
- a vacuum aspirator is an aspirator that suitable for the suction of blood and other body fluids (e.g. MVA Plus other devices).
- vacuum suction devices that are used for suctioning off material / tissue in the uterus are suitable. Since the bone of the limb was severed during the amputation, the medullary cavity was also severed, and the severed part of the limb is open, ie the lumen of the medullary cavity is accessible without the need for another puncture.
- the use of a vacuum suction device has the advantage that it enables the bone marrow to be removed quickly, gently and as completely as possible.
- the removal can take place through a cannula connected to the vacuum suction device.
- the cannula can be 20-40 cm, in particular 24 cm, long, the cannula can have an inside diameter of 2-20 mm, in particular 4-8 mm.
- the cannula can be made of a flexible or semi-rigid material such as plastic.
- step b can include the following steps: insert the cannula into the medullary cavity, activate the vacuum aspirator so that it creates a vacuum, connect the vacuum aspirator to the cannula, and remove the bone marrow through the vacuum aspirator Transport the cannula into a receptacle.
- the cannula can be rotated within the medullary cavity.
- the insertion of the cannula can be facilitated and a complete suction of the tissue can be made possible.
- the vacuum pressure can be increased gradually.
- the pressure applied is at a time when the medullary cavity is still with a lot There is less bone marrow filling and less damage to the bone marrow.
- the vacuum pressure is then increased in order to aspirate the remaining bone marrow as completely as possible.
- the removal can alternatively take place with a sharp spoon, in particular a Volkmann spoon or a gynecological curette.
- a sharp spoon is a spoon commonly used in surgery where the edge of the spoon is sharp-edged so that the bone marrow can be removed efficiently.
- This method is particularly suitable when the length of the part of the bone or limb is rather small, e.g. one third of the total length of the entire limb or bone.
- the alternative method with vacuum pressure is particularly suitable when the length of the part of the limb or bone is rather large, e.g. half or two-thirds of the total length of the entire limb.
- the adult stem cells can be mesenchymal stem cells and / or hematopoietic stem cells.
- the limb can be a thigh (containing the femur) or the bone can be the femur. Particularly large amounts of stem cells can be obtained from the femur.
- the part of the limb can be obtained by amputation at the level of the lower third or amputated at the level of the middle or upper third.
- the subject can be a human.
- the subject can be ill with diseases which inevitably necessitate amputation of a limb, for example diabetes mellitus or atherosclerosis, in particular the subject can be ill with diabetic foot syndrome be ill.
- the subject's limb containing the bone may have suffered trauma, such as an accident.
- steps b. and c. can vary and depends e.g. on the size of the bone. Steps b and c can therefore last a maximum of 90 minutes or a maximum of 60 minutes. Step c can take a maximum of 60 minutes or a maximum of 45 minutes. These short processing times have the advantage that hypoxia of the removed cells is reduced.
- a vacuum suction device which is set up to carry out the method described above with a vacuum suction device, comprising a vacuum suction device, a cannula and a receiving container.
- the stem cell extraction method involves the extraction of bone marrow from human tissue with subsequent isolation of hematopoietic stem cells therefrom.
- the bone marrow is immediately removed mechanically from an amputated limb of the patient with a Volkmann spoon or a vacuum aspirator.
- a cannula is inserted through the femoral canal of the bone cavity and a vacuum suction device is attached to it, if this has not already been done.
- press the buttons on the valve of the vacuum suction device To start suction through the cannula, press the buttons on the valve of the vacuum suction device. The cannula has to be moved and turned towards you.
- the valve buttons When the vacuum suction device is filled and suction stops, the valve buttons must be pressed and the cannula removed from the suction device. The cannula is left in the medullary cavity. The suction cup is then replaced or emptied. Then a vacuum is generated again and the aspirator is connected to the suction hose. If the Extraction is completed, the suction cup is disconnected from the suction hose and the suction hose is pulled out of the thigh cavity. Now the contents of the vacuum suction device have to be emptied into a container. Immediately after the bone marrow collection, both hematopoietic and mesenchymal stem cells are isolated.
- bone marrow After an emergency amputation (e.g. in patients with gangrene of the foot due to diabetes mellitus, after an accident, etc.) of a patient's lower extremity, the bone marrow must be immediately available in the operating room. The necessary sterility is ensured in the operating room.
- bone marrow is extracted from the lumen of a finally (i.e. lifelong) amputated limb (e.g. thigh) immediately after the amputation, e.g. B. removed with a Volkmann spoon (when amputating a limb at the level of the lower thigh third) into a sterile container. This is immediately transported to the laboratory, where hematopoietic and mesenchymal stem cells are isolated from the bone marrow within a maximum of 1 hour.
- a manual vacuum suction device (such as the ipas MVA Plus and similar models) is used to achieve as complete a bone marrow extraction as possible.
- This aspirator is used in gynecology to aspirate the contents of the uterus.
- its mechanism of action allows it to be used to harvest bone marrow from the femur in the following order: After the optional treatment of the edges of the thigh (amputation site), the cannula is gently inserted through the femoral canal without damaging the medullary tissue. Slightly pushing the cannula inwards together with the rotation of the cannula facilitates the insertion.
- the cannula is then inserted slowly until it touches the bone of the epiphysis of the thigh. Then the cannula is carefully withdrawn.
- the cannula must be held securely and immovable on the foot with one hand and (if necessary with an adapter) inserted into the prepared vacuum suction cup in which a vacuum has already been created. Make sure that the cannula is not depressed while the aspirator is being attached.
- the suction cup must be held by the valve body with the other hand.
- the cannula base is then carefully pushed into the vacuum suction device with a slight twist. Alternatively, the cannula can be attached to the
- Vacuum suction cups must be attached before the cannula is inserted into the femoral cavity.
- To start aspiration through the cannula press the buttons on the valve of the vacuum suction device. Blood, bone tissue, and bubbles should begin to flow through the cannula.
- To evacuate the contents of the thigh turn the cannula by moving the piston of the vacuum suction device towards you. At the same time the vacuum pressure is increased. If the suction cup fills while suctioning the contents of the femoral cavity and suction stops, press the valve buttons and disconnect the cannula from the suction cup. The cannula is in to leave the medullary cavity. The suction cup is exchanged or emptied. A vacuum is then created again and the aspirator is connected to the cannula. After completing the operation, the vacuum suction device is separated from the cannula by turning it.
- valve buttons are depressed, the spacer arms of the piston are pressed together and the piston is pushed into the cylinder as far as it will go.
- the patient is not subjected to any additional operations, in particular no puncture.
- the volume of the bone marrow depends on the level of the amputation, which can be at the level of the lower, middle, or upper third of the thigh. Accordingly, the greatest amount of bone marrow and thus of cellular material can be obtained during the amputation of limbs at the level of the upper third of the thigh (Machalinski B., et al .; “Morphological analysis of the bone marrow biopsies derived from heparinized cadaveric organ donors before and after disconnecting from the respirator “, Morphsammlung, Ann Transplant. 2001; 6 (4): 48-52), in patients with diabetes mellitus z. B. the therapy aims at the maintenance of the second extremity and the compensation of the diabetes mellitus. This requires substantial therapeutic doses of stem cells contained in the bone marrow. The percentage of HSCs and MSCs in the bone marrow is shown in Table 1 (based on the examination of 40 bone marrow samples from an amputated limb).
- HSCs and MSCs for cell therapy is most promising at the current stage of clinical science as it allows one to avoid ethical and immunological problems associated with transplanting cells from the donor to the recipient.
- Hematopoietic and mesenchymal stem cells have been used to treat patients with oncological, hematological and other diseases for three decades.
- the approaches to SC transplantation in the treatment of diseases that until recently were considered incurable with traditional approaches are being actively developed.
- the application of cell technologies in clinical practice is an urgent task for modern medicine.
- transplants hematopoietic bone marrow cells
- MSCs have been particularly important for cell therapy because they can be used in a variety of ways. They are practically not rejected and can be used for different patients.
- Such transplants now run in the thousands and are proven to be effective.
- new results from clinical studies appear every year. These studies prove the effectiveness of stem cells in treating various diseases.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Zoology (AREA)
- Biotechnology (AREA)
- Cell Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Genetics & Genomics (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- Developmental Biology & Embryology (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- General Engineering & Computer Science (AREA)
- Hematology (AREA)
- Microbiology (AREA)
- Veterinary Medicine (AREA)
- Medicinal Chemistry (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- Rheumatology (AREA)
- Virology (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- External Artificial Organs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2020126813A RU2745040C1 (ru) | 2020-06-29 | 2020-06-29 | Способ получения стволовых клеток |
PCT/IB2021/055106 WO2022003458A1 (de) | 2020-06-29 | 2021-06-10 | Verfahren zur gewinnung von stammzellen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4171588A1 true EP4171588A1 (de) | 2023-05-03 |
Family
ID=74874483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21739434.5A Pending EP4171588A1 (de) | 2020-06-29 | 2021-06-10 | Verfahren zur gewinnung von stammzellen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4171588A1 (de) |
RU (1) | RU2745040C1 (de) |
WO (1) | WO2022003458A1 (de) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104651299B (zh) * | 2007-04-06 | 2022-07-26 | 国际干细胞公司 | 源于人单性生殖胚泡的患者特异性干细胞系 |
RU2012130627A (ru) * | 2012-07-17 | 2014-01-27 | Государственное Бюджетное Образовательное Учреждение Высшего Профессионального Образования "Красноярский Государственный Медицинский Университет Имени Профессора В.Ф. Войно-Ясенецкого Министерства Здравоохранения И Социального Развития Российской Федерации" | Способ получения костного мозга из ампутированной конечности |
RU2019125043A (ru) * | 2019-08-06 | 2021-02-08 | Людмила Петровна Николаева | Способ получения стволовых клеток |
-
2020
- 2020-06-29 RU RU2020126813A patent/RU2745040C1/ru active
-
2021
- 2021-06-10 EP EP21739434.5A patent/EP4171588A1/de active Pending
- 2021-06-10 WO PCT/IB2021/055106 patent/WO2022003458A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
RU2745040C1 (ru) | 2021-03-18 |
WO2022003458A1 (de) | 2022-01-06 |
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