A METHOD FOR THE TREATMENT OF GLIOBLASTOMA WITH WHARTON JELLY-MESENCHYMAL STEM CELLS (WJ-MSC) DERIVED FROM HUMAN UMBILICAL CORD
20170119824 ยท 2017-05-04
Inventors
Cpc classification
A01N1/126
HUMAN NECESSITIES
C12N5/0605
CHEMISTRY; METALLURGY
A61K35/28
HUMAN NECESSITIES
International classification
A61K35/28
HUMAN NECESSITIES
Abstract
The embodiments of the present invention provide a method for the treatment of glioblastoma using Wharton Jelly-mesenehmal stem cells (WJ-MSC) derived from human umbilical cord. The mesenchymal stem cells have potential to inhibit the glioblastoma cancer cells. For isolating the MSC, the donor is screened for infectious diseases. The consent from the donor is taken for the collection of the umbilical cord sample. The MSC are mechanically harvested or isolated from the Wharton's jelly of umbilical cord. The WJ-MSC are cultured and propagated in vitro and harvested. The harvested WJ-MSC is subjected for characterization. The characterized WJ-MSC's are cryo-preserved. The tumors which do not respond to temozolomide (TMZ) respond to WJ-MSC. WJ-MSC does not exert any toxic effect on any human organ. WJ-MSC are cryoprotective to healthy cells and cytotoxic to glioblastoma cells.
Claims
1. A method for isolating mesenchymal stem cells from Wharton jelly of umbilical cord, the method comprising steps of: collecting umbilical cord from a donor; processing and preserving the umbilical cord; isolating the mesenchymal stem cells from the Wharton jelly of umbilical cord; analysing the isolated mesenchymal stem cells for surface antigens; and cryopreserving the mesenchymal stem cells isolated from the Wharton jelly of umbilical cord.
2. The method according to claim 1, wherein the method of processing and preserving umbilical cord comprises the steps of: obtaining informed consent from an umbilical cord donor and collecting umbilical cord; wiping all instruments with alcohol in a biosafety hood, and wherein the alcohol is 70% v/v isopropyl alcohol; rinsing the umbilical cord pieces with a saline solution and wherein the umbilical cord pieces are rinsed to remove blood clots; washing the umbilical cord pieces with a Dulbecco's phosphate buffer saline solution, and wherein the buffer saline solution comprises an antibiotic, and wherein the antibiotic is an antimycotic agent (1); sterilizing the umbilical cord pieces with alcohol for 45 seconds, and wherein the alcohol is 70% v/v ethanol; washing the umbilical cord pieces with a Dulbecco's phosphate buffer saline (DBPS) for four times, and wherein the umbilical cord pieces are washed in DPBS to remove traces of ethanol; cutting umbilical cord pieces into smaller pieces of 2-3 cm length; and storing the umbilical cord pieces in a saline solution.
3. The method according to claim 1, wherein the method of isolating the mesenchymal stem cells from the Wharton jelly of umbilical cord comprises the steps of: placing the umbilical cord in a sterile petridish, and wherein the petridish comprises 5 ml of a saline solution; slitting the umbilical cord to expose the Wharton's jelly, and wherein the umbilical cord is slit using a forsep and scalpel; collecting the Wharton's jelly in a sterile 50 ml centrifuge tube; centrifuging Wharton's jelly at 1500 rpm for 15 minutes; discarding the supernatant and washing the pellet with Dulbecco's Phosphate Buffer Saline (DBPS) to obtain the mesenchymal stem cells; straining the cell using a cell strainer in a sterile 50 ml falcon tube; and wherein the pore size of cell strainer is 100 m; centrifuging the cells at 15000 rpm for 15 minutes; discarding the supernatant and dissolving the pellet in a fresh culture medium, and wherein the pellet comprises mesenchymal stem cells; counting the mesenchymal stem cells using, a Haemocytometer; seeding the mesenchymal stem cells on one cell stack with a density of 10,000 cells per cm.sup.2, and wherein the cell stack comprises 100 ml of culture media supplemented with 1 ng/ml basic fibroblast growth factor (bFGF): gently rocking the cell stack for an evenly distribution of the cells on a laboratory rocker; incubating the cell stack at 37 C. with 5% CO.sub.2; changing the media completely after 72 hours of mesenchymal stein cell isolation process; partially replacing the spent culture medium with a flesh culture medium after every five days: and culturing the mesenchymal stem cells for 15-20 days until a confluency of 80-90 is obtained.
4. The method according to claim 1, wherein the isolated mesenchymal stem cells are analyzed for antigens, and wherein the isolated mesenchymal stem cells are tested positive for CD 73, CD 90 and CD 166 antigens, and wherein the mesenchymal stem cells are tested negative for CD34 and CD48 antigens, and wherein 95% of the mesenchymal stem cells are tsted positive for CD 73, CD 90 and CD166 antigens.
5. A method of targeting glioblastoma with Wharton's Jelly mesenchymal stem cells (WJ-NISCs) derived from human umbilical cord, the method comprises the steps of: administering the Wharton's Jelly mesenchymal stem cells (WJ-MSCs) to the glioblastoma tumour; and analyzing an effect of Wharton's Jelly mesenchymal stem cells (WJ-MSCs) on glioblastoma tumour.
6. The method according to claim 5, wherein the Wharton's Jelly mesenchymal stem cells (WJ-MSCs) are injected to the glioblastoma tumour in the laboratory conditions.
7. The method according to claim 5, wherein the Wharton's Jelly mesenchymal stem cells (WJ-MSCs) stop the growth of glioblastoma tumour cells and induces programmed cell death (apoptosis).
8. The method according to claim 5, wherein the Wharton's Jelly mesenchymal stem cells (WJ-MSCs) reduce the proliferating glioblastoma tumour cell and reduce the uncontrollable growth of glioblastoma tumour cell.
Description
BRIEF DESCRIPITION OF THE DRAWINGS
[0050] The other objects, features and advantages will occur to those skilled in the art from the following description of the preferred embodiment and the accompany drawings in which:
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[0058] Although the specific features of the present invention are shown in some drawings and not in others. This is done for convenience only as each feature may be combined with any or all of the other features in accordance with the present invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0059] In the following detailed description, reference is made to the accompanying drawings that form a part hereof, and in which the specific embodiments that may be practiced is shown by way of illustration. These embodiments are described in sufficient detail to enable those skilled in the art to practice the embodiments and it is to be understood that the logical, mechanical and other changes may be made without departing from the scope of the embodiments. The following detailed description is therefore not to be taken in a limiting sense.
[0060] The various embodiments herein provide a method for the treatment glioblastoma by using Wharton jelly-mesenchymal stem cells (WJ-MSC) derived from human umbilical cords. The WJ-MSC provides a method for the treatment of glioblastoma without any side effects. The method of glioblastoma treatment with the application of WJ-MSC is independent of blood brain barrier for the delivery of stem cells and to treat the tumor. The treatment method not only treats the tumor but also improves the patient's neurological functions, other symptoms and therefore the quality of life.
[0061] According to one embodiment herein, the method for isolating mesenchymal stem cells from Wharton jelly of umbilical cord comprising the following steps. An umbilical cord is collected from a donor. Then the umbilical cord is processed and preserved. The preserved umbilical cord is used for isolating the mesenchymal stem cells from the Wharton jelly of umbilical cord. The isolated mesenchymal stem cells is analyzed for surface antigens. The mesenchymal stem cells isolated from the Wharton jelly of umbilical cord is cryopreserved.
[0062] According to one embodiment herein, the method of processing and preserving umbilical cord comprises the following steps. An informed consent is obtained from an umbilical cord donor and umbilical cord is collected from the donor after receiving the consent. After collecting the umbilical cord, all the instruments are wiped with alcohol in a biosafety hood, and the alcohol is 70% v/v isopropyl alcohol. The umbilical cord is cut into pieces and the umbilical cord pieces are rinsed with a saline solution. The umbilical cord pieces are rinsed to remove blood clots. The umbilical cord pieces are washed with a Dulbecco's phosphate buffer saline solution. The buffer saline solution comprises of an antibiotic, and the antibiotic is an antimycotic agent (1). The umbilical cord pieces are sterilized with alcohol for 45 seconds. The alcohol is 70% viv ethanol. The umbilical cord pieces are washed with a Dulbecco's phosphate buffer saline (DBPS) for four times. The umbilical cord pieces are washed in DPBS to remove traces of ethanol. The umbilical cord pieces are further cut into smaller pieces of 2-3 cm length. The umbilical cord pieces are stored in a saline solution.
[0063] According to one embodiment herein, the method of isolating the mesenchymal stem cells from the Wharton jelly of umbilical cord comprises the following steps. In the first step the umbilical cord is placed in a sterile petridish. The petridish comprises 5 ml of a saline solution. The umbilical cord is slit to expose the Wharton's jelly and the umbilical cord is slit using a foresep and scalpel. The Wharton's jelly is collected in a sterile 50 ml centrifuge tube. The Wharton's jelly is centrifuged at 15000 rpm for 15 minutes. The supernatant is discarded and the pellet is washed with Dulbecco's Phosphate Buffer Saline (DBPS) to obtain the mesenchymal stem cells. The cells are strained using a cell strainer in a sterile 50 ml falcon tube. The pore size of cell strainer is 100 m. The cells are centrifuged at 15000 rpm for 15 minutes. The supernatant is discarded and the pellet is dissolved in a fresh culture medium. The pellet comprises mesenchymal stem cells. The mesenchymal stem cells are counted using a Haemocytometer. The mesenchymal stem cells are seeded on one cell stack with a density of 10,000 cells per cm2. The cell stack comprises 100 ml of culture media supplemented with 1 ng/ml basic fibroblast growth factor (bFGF). The cell stack is gently rocked for an evenly distribution of the cells on a laboratory rocker. The cell stack is incubated at 37 C. with 5% CO2. The media is changed completely after 72 hours of mesenchymal stem cell isolation process. The spent culture medium is replaced with a fresh culture medium after every five days. Further the mesenchymal stem cells are cultured for 15-20 days until a confluency of 80%-90% is obtained.
[0064] According to one embodiment herein, the isolated mesenchymal stem cells are analyzed for antigens. The isolated mesenchymal stem cells are tested positive for CD 73, CD 90 and CD 166 antigens. The mesenchymal stem cells are tested negative for CD34 and CD48 antigens. 95% of the mesenchymal stem cells are tested positive for CD 73, CD 90 and CD 166.
[0065] According to one embodiment herein, the method of targeting glioblastoma with Wharton's Jelly mesenchymal stem cells (WJ-MSCs) derived from human umbilical cord, comprises the following steps. The Wharton's Jelly mesenchymal stem cells (WJ-MSCs) are administered to the glioblastoma tumour. The effect of Wharton's Jelly mesenchymal stem cells (WJ-MSCs) on glioblastoma tumour is analyzed.
[0066] According to one embodiment herein, the Wharton's Jelly mesenchymal stem cells (WJ-MSCs) injected to the glioblastoma tumour in the laboratory conditions.
[0067] According to one embodiment herein, the Wharton's Jelly mesenchymal stem cells (WJ-MSCs) stop the growth of glioblastoma tumour cells and induces programmed cell death (apoptosis).
[0068] According to one embodiment herein, the Wharton's Jelly mesenchymal stem cells (WJ-MSCs) reduce the proliferating glioblastoma tumour cell and reduce the uncontrollable growth of glioblastoma tumour cell.
[0069] According to one embodiment herein, the following steps are involved in the isolation and administration of the Wharton jelly-mesenchymal stem cells (WJ-MSC) to a glioblastoma patient. The consent from the umbilical cord donor is taken. The donor is screened for infectious disease. The sample is collected from the donor and the donor is informed of the collection of sample. A mechanical harvesting of Wharton's jelly-mesenchymal stem cells is done and in vitro culture and propagation of mesenchymal stem cells is carried out. The stem cells are harvested. The characterization of the isolated, harvested mesenchymal stem cells is performed. The cryopreservation of the mesenchymal stem cells is carried out and the mesenchymal stem cells are administered to glioblastoma patient.
[0070] According to one embodiment herein, an umbilical cord is obtained for a prior isolation of the mesenchymal stem cells from the Wharton's Jelly. The umbilical cord donor is screened for infectious diseases such as human immune virus (HIV), Hepatitis B virus (HBV), Hepatitis C virus (HCV), Cytomegalovirus (CMV), and Venereal Disease Research Laboratory test (VDRL test) as per international society for cellular therapy (ISCT) criteria. The consent from the umbilical cord donor is taken for the collection of umbilical cord sample and is informed of the collection. After the umbilical cord sample is obtained the mesenchymal stem cells are isolated from the Wharton's Jelly.
[0071] According to one embodiment herein, the isolation of mesenchymal stem cells from Wharton's jelly (WJ-MSC) is carried out by a simple mechanical method. The isolation of WJ-MSC is carried out in a cGMP compliant clean room. All the necessary instruments are brought into the biosafety hood and are wiped thoroughly with 70% isopropyl alcohol (IPA). A fresh human umbilical cord (normal delivery/cesarean section) obtained after birth is rinsed in the normal saline and the blood clots are removed. The umbilical cord is subjected to a sterile falcon tube containing Dulbecco's Phosphate Buffered Saline (DPBS). The umbilical cord is properly washed with DPBS containing antibiotic-antimycotic agent (1) for three times. Again the umbilical cord is sterilized with 70% ethanol for 45 seconds. The umbilical cord pieces are washed with DPBS for 4 times to remove the traces of ethanol. The umbilical cord is cut into the pieces of 2-3 ems length and stored in a saline solution.
[0072] According to one embodiment herein, the mesenchymal stein cells are isolated and propagated by the following steps: a 5 ml of saline is taken in a sterile petridish and the umbilical cord piece is placed in the saline solution. A slit is made in the umbilical cord piece to expose the Wharton's jelly. The umbilical cord vessels are removed in the saline solution and the Wharton's jelly is removed using the sharp sterile forceps and a scalpel. The Wharton's jelly is collected in a sterile 50 ml centrifuge tube. The collected Wharton's jelly is centrifuged at 1500 rpm for 15 minutes. The supernatant is discarded and the pellet is washed once with Dulbecco's Phosphate Buffered Saline (DPBS). The cells are strained using the cell strainer (100 m) in a sterile 50 ml falcon tube (around 45-50 ml). The cells are centrifuged at 1500 rpm for 15 minutes. The supernatant is discarded and the pellet is dissolved in a fresh culture medium. The cell count is done using a Haemocytometer. The cells are seeded on one cell stack with a density of 10000 cells per cm.sup.2. A 100 ml of culture media supplemented with 1 ng/ml basic fibroblast growth factor (bFGF) is added to one chamber cell stack. The cell stack is gently rocked for an even distribution of the cells and labeled as Passage 0 (P-0), with ANSA code and date. The cell stack is incubated at 37 C. with 5% CO.sub.2 and is observed every alternate day. A complete media change is done after 72 hours of isolation procedure. After every 5 days, the spent media is partially replaced with a fresh culture medium. The cells are cultured for 15-20 days until the confluency of 80%-90% is achieved in the flask.
[0073] The mesenchymal stem cells have CD73, CD90 and CD166 antigens. The cells should be positive for these antigens. Further the mesenchymal stem cells should be negative for CD34 and CD48. As these antigens are expressed by hematopoietic stem cells, the hematopoietic stem cells are not mesenchymal stem cells in nature. Further to call a population of cells as mesenchymal stromal cells, more than 95% of the cells should be positive for CD73, CD90 and CD 166 antigens. Also the cells showing CD34 and CD48 antigens should not exceed 2%.
[0074] According to one embodiment herein, the characterization of the isolated and harvested mesenchymal stem cells from Wharton's jelly is carried out. The characterization process includes identification of the morphology i.e. spindle shape of the cells; immunophenotype identification which includes CD34ve, CD45ve, CD73+ve CD90ve CD166+ve testing; and tri-lineage differentiation potential testing which includes testing for adipocyte, osteocyte and chondrocyte differentiation.
[0075] According to one embodiment herein, the characterized Wharton's jelly derived mesenchymal stem cells (NJ-MSC) are cryopreserved.
[0076] According to one embodiment herein, the Wharton's jelly derived mesenchymal stern cells (WJ-MSC) are injected to the glioblastoma patient directly to the tumor site. It is found that the tumors which do not respond to Temozolomide (TMZ) respond to WJ-MSC. Also WJ-MSC does not exert any toxic effect on any organ of the human body. WJ-MSC are cryoprotective to healthy cells and cytotoxic to glioblastoma cells.
[0077] According to one embodiment herein, Ocoprint an explants tumor culture model to identify the anti-tumor effect of commonly used chemotherapeutics agents as well as Wharton's jelly derived mesenchymal stem cells on glioma's samples. In the laboratory, a tumor microenvironment similar to the body or physiological environment is created artificially in a dish. The tumor sample collected from the patient is placed in this micro-environment in dish. Different anticancer agents including the mesenchymal stem cells derived from umbilical cord are applied on the tumor in the micro-environment. This mimics the application of these anti-cancer agents against the tumor when the tumor is in the human body. Simultaneously a control sample is maintained without any treatment or application of anti-cancer agents. After a specific treatment time or incubation, the tumor samples are collected from the microenvironment and are subjected to a set of laboratory tests. The tests demonstrate the effect of anti-cancer agents on the tumor. The tests also reveal that the anti-cancer agents are able to kill tumor cells, reduce the number of tumor cells or limit the growth of tumor cells or the anti-cancer agent is converting the aggressively growing tumor cells to a programmed cell death mode.
[0078] The tests which are applied for testing effect of anti-cancer agents on the tumor are 1) Hematoxylin and eosin staining (H & E staining), 2) Ki67 is staining and 3) Caspase staining.
[0079] The H & F staining reveals the number of tumor cells present in the sample. The Ki67 staining indicates the growth pattern of tumor cells. The caspase staining shows that the aggressively growing cells turned into a programmed cell death mode or the dying cells.
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[0087] The seven anti-cancer agents applied to the glioblastoma tumor are sorafenib, thalidomide, avastin, temozolamide, Anscell, Anscell+thalidone and Anscell+temozolamide. Among all the seven anti-cancer agents the Anscell (umbilical cord Wharton jelly derived mesenchymal stem cells) show the highest anti-tumor effect on gliooblastoma tumor cells. The H&E staining illustrates a comparative reduction in tumor cells. The Ki67 staining reveals that there is reduction in number of proliferating tumor cell and uncontrollable growth of cells. The caspase staining shows an increased number of apoptotic cells i.e. the tumor cells have turned from an aggressive mode of dying cells.
[0088] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments.
[0089] It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the appended claims.
[0090] Although the embodiments herein are described with various specific embodiments, it will be obvious for a person skilled in the art to practice the invention with modifications. However, all such modifications are deemed to be within the scope of the claims.
[0091] It is also to be understood that the following claims are intended to cover all of the generic and specific features of the embodiments described herein and all the statements of the scope of the embodiments which as a matter of language might be said to fall there between