WO2014200256A1 - Egf 또는 bfgf를 포함하는 배지에서 배양한 지방유래 줄기세포의 증식 및 치료능력 탐지 마커 및 이의 용도 - Google Patents
Egf 또는 bfgf를 포함하는 배지에서 배양한 지방유래 줄기세포의 증식 및 치료능력 탐지 마커 및 이의 용도 Download PDFInfo
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Definitions
- the present invention relates to a composition and a method for detecting a marker for detecting the therapeutic or proliferative capacity of adipose derived stem cells, cultured in a medium containing EGF (Epidermal growth factor) or bFGF (basic fibroblast growth factor).
- EGF Epidermal growth factor
- bFGF basic fibroblast growth factor
- Adipose tissue contains more than 1,000 times more stem cells than stem cells capable of separating from the same amount of bone marrow. For this reason, adipose tissue-derived stem cells (ASC) are used as biotransplant materials. There is a lot of research going on. Adipose-derived stem cells also have the same differentiation potential as bone marrow-derived stem cells and can differentiate into cartilage, bone, fat or muscle cells. In addition, adipose derived stem cells have similar expression patterns of bone marrow-derived stem cells and cell surface markers, and do not induce an immune response in autologous or allogeneic transplantation both in vivo and in vitro , but rather have a function of regulating the immune response. It has been reported to be spotlighted as an effective means of cell therapy.
- AGPAT9 (1-acylglycerol-3-phosphate) was developed as a result of the effort to develop markers showing the difference in expression between adipose derived stem cells cultured in basal medium and adipose derived stem cells cultured in proliferating medium.
- O-acyltransferase 9 ANXA10 (annexin A10), IGF2BP3 (insulin-like growth factor 2 binding protein 3) and PTGER2 (prostaglandin E receptor 2) genes are increased in adipose derived stem cells cultured in proliferation medium
- Adipose-derived stem cells cultured in proliferation medium with expression of ITGA11 (integrin, alpha 11), PAWR (PRKC, apoptosis, WT1, regulator) and SFRP2 (secreted frizzled-related protein 2) genes It confirmed that this is reduced by standing, the genes that can be used or the like, including a therapeutically active measuring proliferation of adipose derived stem cell ability, immune inhibitory ability, and differentiation ability, such as cultured in growth medium was confirmed and completed the present invention.
- One object of the present invention is AGPAT9 (1-acylglycerol-3-phosphate O-acyltransferase 9), ANXA10 (annexin A10), IGF2BP3 (insulin-like growth factor 2 binding protein 3), PTGER2 (prostaglandin E receptor 2), ITGA11 (integrin, alpha 11), PAWR (PRKC, apoptosis, WT1, regulator) and one or more gene mRNAs selected from the group consisting of secreted frizzled-related protein 2 (SFRP2) or agents for measuring protein levels thereof, It is to provide a marker detection composition for detecting the therapeutic capacity of adipose derived stem cells cultured in a medium containing EGF (Epidermal growth factor) or bFGF (basic fibroblast growth factor).
- EGF Epidermal growth factor
- bFGF basic fibroblast growth factor
- Another object of the present invention is a medium comprising EGF or bFGF, comprising an agent for measuring at least one gene mRNA or protein level thereof selected from the group consisting of AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR and SFRP2. It is to provide a marker detection composition for detecting the proliferative capacity of the adipose derived stem cells cultured in.
- Another object of the present invention is to provide a marker detection kit for detecting the therapeutic and proliferative capacity of adipose derived stem cells cultured in a medium containing EGF or bFGF, including the marker detection composition.
- Another object of the present invention is at least one gene mRNA or protein level thereof selected from the group consisting of AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR and SFRP2 of adipose derived stem cells cultured in a medium comprising EGF or bFGF
- AGPAT9 AGPAT9
- the present invention can provide more useful data in verifying the efficacy of adipose derived stem cells by providing markers that can determine adipose derived stem cells with increased clinical efficacy in cultured medium.
- it can be usefully used as a marker for detecting therapeutic agent activity represented by the proliferation ability, differentiation capacity, and the like of adipose derived stem cells cultured using the improved culture method.
- FIG. 1 is a diagram showing the cell shape of adipose derived stem cells in basal medium and proliferation medium.
- Figure 2 is a diagram showing the difference in cell growth of adipose derived stem cells in basal medium and proliferation medium.
- Figure 3 shows the microarray results of the cells cultured in three sets of basal medium and adipose derived stem cells cultured in proliferation medium using Illumina 24K chip.
- Figure 4 shows the change in the expression level of the genes increased in the growth medium selected in Figure 3 in adipose derived stem cells collected from 17 donors by RT-PCR and real-time PCR, RPL13A is a control gene.
- Figure 4a shows the results of the increase APPAT9 in the growth medium
- Figure 4b shows the results of ANXA10
- Figure 4c IGF2BP3 shows the results of ANXA10
- Figure 4d PTGER2 Figure 4d PTGER2.
- FIG. 5 shows the change in the expression level of the genes decreased in the growth medium selected in Figure 3 in adipose derived stem cells collected from 17 donors by RT-PCR and real-time PCR
- RPL13A is a control gene.
- FIG. 5A shows the result of ITGA11 decreasing in growth medium
- FIG. 5B shows the result of PAWR
- FIG. 5C shows the result of SFRP2.
- Figure 6 shows the results of protein changes in the basal medium and proliferation medium of the genes.
- the invention relates to fats cultured in a medium comprising EGF or bFGF, comprising an agent that measures one or more gene mRNAs or protein levels thereof selected from the group consisting of AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR and SFRP2.
- a composition for detecting a therapeutic capability detection marker of a stem cell comprising EGF or bFGF, comprising an agent that measures one or more gene mRNAs or protein levels thereof selected from the group consisting of AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR and SFRP2.
- adipocyte-derived stem cell refers to stem cells isolated from adipose tissue capable of differentiating into most mesenchymal cells such as adipocytes, osteoblasts, chondrocytes, and myofibroblasts.
- ASC adipocyte-derived stem cell
- a progenitor cell a stromal cell, a multipotent adipose-derived cell or adipose derived adult stem cells (adipose derived adult stem cells) means a cell called.
- the fat-derived stem cells are not particularly limited thereto, but may be fat-derived stem cells derived from mammals including pigs, cattle, primates, and humans that can be transplanted into humans.
- the term "marker for detecting the therapeutic ability of adipose derived stem cells cultured in a medium containing EGF or bFGF” refers to cells cultured in a basal medium not containing EGF or bFGF and EGF or bFGF. When compared with adipose derived stem cells cultured in proliferation medium, it refers to an organic biomolecule showing a significant difference in the expression or not.
- the adipose derived stem cells cultured in the proliferation medium are superior to the therapeutic ability, such as immunosuppressive ability or differentiation capacity, compared to the adipose derived stem cells cultured in the basal medium (Korean Patent Publication No. 10-2010-0118491).
- AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR and SFRP2 As one or more genes selected from the group, AGPAT9, ANXA10, IGF2BP3 and PTGER2 have increased expression in adipose derived stem cells cultured in proliferation medium compared to adipose derived stem cells cultured in primary medium, and ITGA11, PAWR and SFRP2 It is a gene whose expression is reduced.
- genes used in the present invention can be obtained from a known database such as GenBank of the National Institutes of Health, such as AGPAT9 (NM_032717.3, NP_001243351.1), ANXA10 (NM_007193.3, NP_009124.2), IGF2BP3 ( NM_006547.2, NP_006538.2), PTGER2 (NM_000956.2, NP_000947.2), ITGA11 (NM_001004439.1, NP_001004439.1), PAWR (NM_002583.2, NP_002574.2) or SFRP2 (NM_003013.2, NP_003004. 1), but is not limited thereto.
- GenBank GenBank of the National Institutes of Health
- the genes show differences in expression in both media. It can be used as a marker for detecting the therapeutic ability of a cell.
- EGF epidermal growth factor
- the EGF has an activity of promoting the proliferation of various epithelial cells and can also proliferate mouse T cells or human fibroblasts.
- EGF refers to a protein that is included in the culture medium of adipose derived stem cells and plays a role in increasing therapeutic activity such as its proliferation and differentiation ability.
- basic fibroblast growth factor refers to growth factors involved in biological processes such as angiogenesis or wound healing.
- bFGF refers to a protein that is included in the medium of adipose derived stem cells, such as EGF, and serves to increase therapeutic activity such as its proliferation and differentiation ability.
- the term "basal medium” is a medium for culturing adipose derived stem cells, in particular the stromal-vascular fraction comprising the same.
- the basal medium may be a medium containing serum in culture of adipose derived stem cells such as DMEM medium or DMEM / F12, and the serum may be FBS (Fetal bovine serum) commonly used for cell culture. It may be included in about 10%, that is, about 8 to 12%, but if the fat-derived stem cell culture medium commonly used in the art is not particularly limited thereto. In one embodiment of the present invention was used as a basal medium DMEM medium containing 10% FBS. In the present invention, the "base medium” may be mixed with the "basic medium”.
- the term "proliferation medium” is a medium used for improving the proliferation or differentiation capacity of adipose derived stem cells, and a medium which adds a basic fibroblast growth factor (BFGF) or an epidermal growth factor (EGF) to the basal medium.
- the growth medium may contain EGF or bFGF at a concentration of 0.1 ng / ml to 100 ng / ml, respectively.
- the "proliferation medium” may be mixed with "medium containing EGF or bFGF”.
- the term "therapeutic capacity” means the therapeutic activity of the stem cells (therapeutic activity), and when using the stem cells of the present invention as a cell therapy, it is also referred to as "titer”.
- tumor a cell therapy
- proliferative capacity a cell proliferation
- differentiation capacity a cell proliferation factor
- immunomodulatory capacity a cell proliferation factor
- differentiation capacity refers to the ability of the adipose derived stem cells to be differentiated into adipocytes, osteoblasts, chondrocytes, myofibroblasts, osteoblasts, muscle cells or neurons.
- adipose derived stem cells having high differentiation capacity are meant to be cells which easily induce differentiation into adipocytes, osteoblasts, chondrocytes, myofibroblasts, osteoblasts, muscle cells or neurons, but are not limited thereto.
- immunosuppressive ability preferably refers to immunosuppressive ability
- the immunosuppressive ability means that adipose derived stem cells cultured in a medium containing bFGF or EGF can inhibit the activity of immune cells.
- mesenchymal stem cells are known to be involved in the immunosuppressive effect by inhibiting APC (antigen presenting cell). Therefore, the adipose derived stem cells of the present invention can be used as an immunosuppressive agent to treat immune diseases.
- therapeutic adipose derived stem cells has a higher expression level of one or more genes selected from the group consisting of AGPAT9, ANXA10, IGF2BP3 and PTGER2 compared to adipose derived stem cells cultured in basal medium, ITGA11 Fat-derived stem cells with reduced expression of one or more selected from the group consisting of PAWR and SFRP2, and have faster cell proliferation, better immunosuppressive activity, and differentiation efficiency than fat-derived stem cells cultured in basal medium.
- the expression level of such genes can be confirmed by measuring the amount of mRNA or protein.
- mRNA level measurement refers to a process of confirming the presence and expression level of mRNA of marker genes representing the therapeutic ability of adipose derived stem cells in a biological sample to diagnose the differentiation ability of adipose derived stem cells. Measure the amount of.
- Analytical methods for this purpose include reverse transcriptase (RT-PCR), competitive reverse transcriptase (RT) PCR, real time reverse transcriptase (Realtime RT-PCR), and RNase protection assay (RPA). , Northern blotting or DNA chips, but is not limited thereto.
- RT-PCR reverse transcriptase
- RT competitive reverse transcriptase
- Realtime RT-PCR real time reverse transcriptase
- RNase protection assay RNase protection assay
- the agent for measuring mRNA level of the gene is preferably a primer pair or probe, and the nucleic acid sequences of the AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR and SFRP2 genes are NM_032717.3, NM_007193.3, NM_006547.2, NM_000956 As described in .2, NM_001004439.1, NM_002583.2 and NM_003013.2, one of skill in the art can design primers or probes that specifically amplify specific regions of these genes based on the sequences.
- primer refers to a nucleic acid sequence having a short free 3 'terminal hydroxyl group, which forms a base pair with a complementary template and functions as a starting point for template strand copying. Means.
- the primer is preferably a primer pair of SEQ ID NOs: 3 and 4 for AGPAT9, a primer pair of SEQ ID NOs: 5 and 6 for ANXA10, a primer pair of SEQ ID NOs: 7 and 8 for IGF2BP3,
- Primers for PTGER2 are primer pairs SEQ ID NOs: 9 and 10
- primers for ITGA11 are primer pairs SEQ ID NOs: 11 and 12
- primers for PAWR are primer pairs SEQ ID NO: 13 and 14
- primers for SFRP2 are SEQ ID NO: 15 and 16 primer pairs, but is not limited thereto.
- the term “probe” refers to a nucleic acid fragment such as RNA or DNA corresponding to a short number of bases or hundreds of bases that can form specific binding with mRNA, and is labeled to indicate the presence or absence of a specific mRNA. You can check it.
- the probe may be manufactured in the form of an oligonucleotide probe, a single stranded DNA probe, a double stranded DNA probe or an RNA probe.
- hybridization is performed using a probe complementary to AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR or SFRP2 polynucleotides, and it is possible to determine the differentiation ability of adipose derived stem cells through hybridization. Selection of suitable probes and hybridization conditions can be modified based on what is known in the art.
- Primers of the invention can initiate DNA synthesis in the presence of reagents for polymerization (ie, DNA polymerase or reverse transcriptase) and four different nucleoside triphosphates at appropriate buffers and temperatures.
- the primers of the present invention are sense and antisense nucleic acids having 7 to 50 nucleotide sequences as primers specific for each marker gene. Primers can incorporate additional features that do not change the basic properties of the primers that serve as a starting point for DNA synthesis.
- Primers or probes of the invention can be synthesized chemically using phosphoramidite solid support methods, or other well known methods. Such nucleic acid sequences can also be modified using many means known in the art.
- Non-limiting examples of such modifications include methylation, encapsulation, substitution of one or more homologs of natural nucleotides, and modifications between nucleotides, such as uncharged linkages such as methyl phosphonate, phosphoester, phosphoroami Date, carbamate, etc.) or charged linkages such as phosphorothioate, phosphorodithioate and the like.
- Nucleic acids may be selected from one or more additional covalently linked residues, such as proteins (eg, nucleases, toxins, antibodies, signal peptides, poly-L-lysine, etc.), inserts (eg, acridine, psoralene, etc.).
- Chelating agents eg, metals, radioactive metals, iron, oxidizing metals, etc.
- alkylating agents eg, metals, radioactive metals, iron, oxidizing metals, etc.
- Nucleic acid sequences of the invention can also be modified using a label that can provide a detectable signal directly or indirectly. Examples of labels include radioisotopes, fluorescent molecules and biotin.
- protein level measurement refers to a process for confirming the presence and degree of expression of a protein expressed from a marker gene representing a therapeutic ability of adipose derived stem cells in a biological sample to detect the differentiation capacity of adipose derived stem cells.
- the amount of protein can be confirmed using an antibody that specifically binds to the protein of the gene.
- an antibody refers to a specific protein molecule directed against an antigenic site.
- an antibody refers to an antibody that specifically binds to a marker protein, specifically for a protein encoded by the marker genes of the present invention, AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR or SFRP2. It means an antibody that specifically binds, and includes all polyclonal antibodies, monoclonal antibodies and recombinant antibodies. Since the marker proteins of the present invention have been identified, the production of antibodies using them can be readily prepared using techniques well known in the art.
- Polyclonal antibodies can be produced by methods well known in the art for injecting the marker protein antigen into an animal and collecting blood from the animal to obtain serum comprising the antibody.
- Such polyclonal antibodies can be prepared from any animal species host such as goat, rabbit, sheep, monkey, horse, pig, cow and dog.
- Monoclonal antibodies are known in the art by the hybridoma method (see Kohler and Milstein (1976) European Jounral of Immunology 6: 511-519), or phage antibody libraries (Clackson et al, Nature, 352: 624-628, 1991; Marks et al, J. Mol. Biol., 222: 58, 1-597, 1991), and the like.
- Antibodies prepared by the above method can be isolated and purified using methods such as gel electrophoresis, dialysis, salt precipitation, ion exchange chromatography or affinity chromatography.
- the antibodies of the present invention also include functional fragments of antibody molecules, as well as complete forms having two full length light chains and two full length heavy chains.
- a functional fragment of an antibody molecule refers to a fragment having at least antigen binding function, and includes Fab, F (ab '), F (ab') 2 and Fv. Protein levels can be measured by Western blot, enzyme linked immunosorbent assay (ELISA), radioimmunoassay (RIA), radioimmunodiffusion, and Ouchterlony immunodiffusion.
- Rocket immunoelectrophoresis tissue immunostaining, immunoprecipitation assay, complement fixation assay, fluorescence activated cell sorter (FACS), and protein chip.
- FACS fluorescence activated cell sorter
- protein chip protein chip.
- Western blot was used to measure the level of the protein (Example 4).
- the fat-derived stem cells cultured in a medium containing EGF or bFGF are more proliferative, immunosuppressive, or differentiating than the fat-derived stem cells cultured in a basal medium that does not contain the above factors. Based on the excellent activity (Korean Patent Publication No.
- high expression levels of AGPAT9, ANXA10, IGF2BP3 and PTGER2 proteins, or low expression levels of ITGA11, PAWR or SFRP2 proteins may be markers for indicating therapeutic activity of adipose derived stem cells (FIG. 6).
- the invention comprises an EGF or bFGF comprising an agent that measures one or more gene mRNAs or protein levels thereof selected from the group consisting of AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR and SFRP2 It provides a marker detection composition for detecting the proliferation capacity of the adipose derived stem cells cultured in the medium.
- the measurement and genes of the adipose derived stem cells, EGF, bFGF, mRNA or protein levels thereof are as described above.
- proliferative capacity refers to the ability of cells to increase the number of cells accompanied by DNA synthesis and cell division by autonomous or exogenous stimulation such as hormones. This includes potential retention.
- Stem cells have self renewal capacity in vitro culture and have proliferative capacity.
- the proliferation capacity decreases, resulting in the limitation of obtaining pure and large amount of stem cells. Therefore, in order to effectively use stem cells as a therapeutic agent, a culture method capable of obtaining a large amount of stem cells in a short time is required.
- the adipose derived stem cells cultured in a medium containing EGF or bFGF are superior to the adipose derived stem cells cultured in the basal medium.
- Genes showing differences in expression between adipose derived stem cells cultured at were identified.
- the expression of one or more genes selected from the group consisting of AGPAT9, ANXA10, IGF2BP3, and PTGER2 is increased compared to the adipose derived stem cells cultured in the basal medium, ITGA11, PAWR
- expression of one or more genes selected from the group consisting of SFRP2 is reduced compared to adipose derived stem cells cultured in basal medium.
- Adipose-derived stem cells exhibiting such expression characteristics are reduced in the expression of adipose derived stem cells, especially AGPAT9, ANXA10, IGF2BP3, or PTGER2 genes cultured in basal medium, or increased expression of ITGA11, PAWR or SFRP2 genes.
- the cell proliferation is better and the cell yield is high, and the clinical therapeutic effects such as cell proliferation, immunosuppression, and differentiation ability are high.
- the present invention comprises a fat for culturing in a medium containing EGF or bFGF comprising a marker detection composition for detecting the differentiation capacity of the adipose derived stem cells cultured in the medium containing the EGF or bFGF
- a marker detection kit for detecting the differentiation capacity of the stem cells.
- the marker detection composition for detecting the differentiation ability of the adipose derived stem cells cultured in the medium containing the EGF or bFGF is as mentioned above.
- the marker detection kit of the present invention is used for immunological analysis as well as primers or antibodies capable of selectively recognizing marker genes or proteins thereof whose expression is increased or decreased by culturing in a growth medium containing EGF or bFGF.
- Tools and reagents commonly used in the art include, but are not limited to, suitable carriers, labeling materials capable of generating detectable signals, solubilizers, detergents, buffers, stabilizers, and the like.
- the label is an enzyme, it may include a substrate and a reaction terminator that can measure the activity of the enzyme.
- Suitable carriers include, but are not limited to, soluble carriers such as physiologically acceptable buffers known in the art, such as PBS, insoluble carriers such as polystyrene, polyethylene, polypropylene, polyesters, Polyacrylonitrile, fluororesin, crosslinked dextran, polysaccharides, polymers such as magnetic fine particles plated with latex metal, other papers, glass, metals, agarose and combinations thereof.
- soluble carriers such as physiologically acceptable buffers known in the art, such as PBS, insoluble carriers such as polystyrene, polyethylene, polypropylene, polyesters, Polyacrylonitrile, fluororesin, crosslinked dextran, polysaccharides, polymers such as magnetic fine particles plated with latex metal, other papers, glass, metals, agarose and combinations thereof.
- the kit for detecting a marker of the present invention may preferably be an RT-PCR kit, a DNA kit or a protein chip kit.
- the protein chip is provided with an antibody against a protein encoded by the gene, antigen-antibody complex formation for two or more antibodies can be observed, which is more advantageous in detecting the differentiation capacity of adipose derived stem cells.
- the RT-PCR kit may comprise individual primer pairs specific for the marker gene, as well as other test tubes or other suitable containers, reaction buffers (variable pH and magnesium concentrations), deoxynucleotides (dNTPs), Taq Enzymes such as polymerase and reverse transcriptase, DNAse, RNAse inhibitor DEPC-water, sterile water and the like.
- reaction buffers variable pH and magnesium concentrations
- dNTPs deoxynucleotides
- Taq Enzymes such as polymerase and reverse transcriptase, DNAse, RNAse inhibitor DEPC-water, sterile water and the like.
- the DNA chip kit may include a substrate on which a cDNA or oligonucleotide corresponding to a gene or a fragment thereof is attached, and a reagent, an agent, an enzyme, etc. for preparing a fluorescent probe, and the substrate may be a control gene. Or cDNA or oligonucleotide corresponding to fragments thereof.
- the protein chip kit may be a kit in which one or more antibodies against a marker are arranged at a predetermined position on a substrate and immobilized at a high density.
- the protein is separated from the sample, and the separated protein is hybridized with the protein chip to form an antigen-antibody complex, which can be read to confirm the presence or expression level of the protein.
- the present invention includes a fat cultured in a medium containing EGF or bFGF, including a marker detection composition for detecting the proliferation capacity of the adipose derived stem cells cultured in the medium comprising the EGF or bFGF It provides a marker detection kit for detecting the proliferation capacity of the stem cells derived.
- the marker detecting composition for detecting the proliferative capacity of the adipose derived stem cells cultured in the medium containing the EGF or bFGF, and the kit for detecting the marker may be used as described above.
- the present invention is one or more gene mRNA or its selected from the group consisting of AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR and SFRP2 of adipose derived stem cells cultured in a medium comprising EGF or bFGF It provides a method for detecting the differentiation capacity of adipose derived stem cells, comprising measuring protein levels.
- the medium containing the EGF or bFGF, the mRNA level of the gene or its protein level and the differentiation capacity of the adipose derived stem cells are as described above.
- the method further comprises that if the amount of one or more gene mRNAs or proteins thereof selected from the group consisting of ITGA11, PAWR and SFRP2 is less than the value measured in adipose derived stem cells cultured in basal medium as a control, Determining higher than the control group, or the value of one or more gene mRNAs or proteins thereof selected from the group consisting of AGPAT9, ANXA10, IGF2BP3, and PTGER2 is measured on adipose derived stem cells cultured in the basal medium control group
- the method may be a method for detecting the differentiation capacity of the adipose derived stem cells, including the step of determining that the differentiation capacity is lower than that of the control group.
- the fat-derived stem cells cultured in the basal medium as a control and the fat-derived stem cells cultured in the growth medium are preferably the same passage number or less than one passage.
- the adipose derived stem cells cultured in a medium containing EGF or bFGF are superior in therapeutic activity such as proliferative capacity and differentiation capacity than adipose derived stem cells cultured in a basal medium not containing the above factors.
- a gene showing a significant difference in expression between adipose derived stem cells cultured in a medium containing EGF or bFGF and adipose derived stem cells cultured in a basal medium was identified.
- the present invention is one or more gene mRNA or its selected from the group consisting of AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR and SFRP2 of adipose derived stem cells cultured in a medium comprising EGF or bFGF It provides a method for detecting the proliferative capacity of adipose derived stem cells, comprising measuring protein levels.
- the medium containing the EGF or bFGF, the mRNA level of the gene or its protein level measurement and the proliferation capacity of the adipose derived stem cells are as described above.
- the proliferative capacity is If the amount of one or more gene mRNA selected from the group consisting of AGPAT9, ANXA10, IGF2BP3 and PTGER2 or a protein thereof is higher than the value measured in the adipose derived stem cells cultured in the basal medium control group , It may be a method for detecting the proliferation capacity of the adipose derived stem cells further comprising the step of determining that the proliferation capacity is lower than the control group.
- Example 1 Verification of cell proliferation ability of adipose derived stem cells according to basal medium and proliferation medium
- Adipose tissue was isolated from the donor (Antrogen, Gyeonggi-do, Korea), and adipose derived stromal stem cells were isolated from the obtained adipose tissue.
- Adipose tissue was washed 34 times with the same volume of Krbs-Ringer Bicarbonate (KRB) solution to remove blood.
- KRB Krbs-Ringer Bicarbonate
- the same volume of collagenase solution as adipose tissue was added and reacted in a 37 ° C. water bath. This was transferred to a centrifuge tube and centrifuged at 20 ° C. and 1200 rpm for 10 minutes. The supernatant fat layer was removed, and the lower collagenase solution was carefully separated so as not to shake.
- the basal medium was suspended and centrifuged for 5 minutes at 20 °C, 1200 rpm. At this time, since the sinking below is the stromal-vascular fraction, the supernatant was removed.
- the stromal-vascular fractions were suspended in basal medium and inoculated in culture vessels and incubated in 37 ° C., 5% CO 2 incubator for 24 hours. After removal of the culture solution, the cells were washed with phosphate buffer, and the basal medium or basal medium contained 1 ng / ml of basic fibroblast growth factor (bFGF), or 5 ng of epidermal growth factor (EGF) in basal medium. Proliferation was performed using the medium contained at a / ml concentration.
- bFGF basic fibroblast growth factor
- EGF epidermal growth factor
- adipose derived stromal stem cells When adipose derived stromal stem cells were grown to about 80-90% of the culture vessel, they were obtained by separating into single cells by treating with trypsin. The obtained cells were diluted 1: 31: 4 with proliferation medium to carry out passage culture (Publication No. 10-2010-0118491). To analyze the gene expression differences according to the composition of culture medium, 5 passage cells cultured with basal medium, DMEM containing 10% FBS, and 5 passage cells cultured with growth medium containing 1 ng / ml bFGF in basal medium It was.
- Figure 1 shows a morphology picture of adipose derived stem cells cultured in basal medium and proliferation medium.
- Figure 2 shows an example of cell population doubling level (CPDL) of adipose derived stem cells cultured in basal medium and proliferation medium.
- CPDL cell population doubling level
- Example 2 Confirmation of gene expression increase and decrease by the medium of adipose derived stem cells by microarray experiment
- Adipose tissue was isolated from 17 donors (Antrogen, Gyeonggi-do, Korea) and cultured adipose derived stem cells as in Example 1.
- the cultured adipose derived stem cells were lysed in 15 ml of digestion buffer in a kit to which 150 ⁇ l of beta mercapto ethanol was added. 15 ml of 70% ethanol was added thereto, mixed well, and centrifuged at 3000 g for 5 minutes to attach total RNA to the membrane. After two washes, total RNA was isolated by adding 1.2 ml of RNase-free water.
- the extracted total RNA was hybridized using an Illumina TotalPrep RNA Amplification Kit (Ambion). Subjected to T7 Oligo (dT) to synthesize cDNA using a primer, and, in vitro transcription using a biotin-UTP (in vitro transcription) to prepare a biotin-labeled cRNA.
- the prepared cRNA was quantified using NanoDrop.
- CRNA prepared from adipose derived stem cells were hybridized to a Human-6 V2 (Illumina) chip. After hybridization, DNA chips were washed using Illumina Gene Expression System Wash (Illumina) to remove nonspecific hybridization, and the washed DNA chips were labeled with streptavidin-Cy3 (Amersham) fluorescent dye.
- Fluorescently labeled DNA chips were scanned using a confocal laser scanner (Illumina) to obtain data of fluorescence present in each spot and stored as image files in TIFF format.
- TIFF image files were quantified with BeadStudio version 3 (Illumina) to quantify the fluorescence values of each spot. Quantified results were corrected using the 'quantile' function with Avadis Prophetic version 3.3 (Strand Genomics) program.
- FIG. Figure 3 shows the difference in expression of the genes measured in passage 5 cells cultured in basal medium and passage 5 cells cultured in proliferation medium.
- AGPAT9, ANXA10, IGF2BP3, and PTGER2 genes show a significant increase in proliferation medium compared to basal medium
- ITGA11, PAWR and SFRP2 are genes whose expression is decreased in growth medium compared to basal medium. From these results, it can be seen that the genes show a large expression difference when comparing the basal medium and the proliferation medium, and thus it can be used to determine the fat stem cells cultured in the proliferation medium having high clinical effectiveness.
- these results may be different from known markers for distinguishing stem cells from differentiated stem cells, and may be different depending on passage number and differentiation.
- IGF2BP3 increases with passage in the stem cell state before differentiation, but rapidly decreases when differentiation begins. In the case of ITM2A, it decreases with passage in the stem cell state but increases when differentiation begins.
- Example 2 The expression levels of the genes identified in Example 2 were analyzed using RT-PCR method using 17 pairs of donor adipose stem cell samples (basal medium and proliferating medium cultured cells). Total RNA was isolated via the method of Example 2.
- Example 3-1 cDNA Synthesis and Concentration Correction of a Template
- RNA / primer mixture was stored at 55 ° C.
- RPL13A was used as a standard gene for quantifying marker genes. RT-PCR reaction was performed using primers of the standard gene, and the concentration of cDNA was corrected so that the expression level of the standard gene RPL13A was the same. First, each cDNA was diluted 20-fold, and then PCR reaction was performed using 2 ⁇ l of the diluted sample.
- PCR was performed using 15 ⁇ l of 2x PCR premix (Hot start), 2 ⁇ l of PRL13A forward primer, 2 ⁇ l of PRL13A reverse primer, and 11 ⁇ l of distilled water. 20 cycles, 23 cycles, and 25 cycles were performed. At this time, RT-PCR reaction conditions were performed at 94 °C 30 seconds, 50 °C 30 seconds, 72 °C 1 minutes.
- the RPL13A primers used were forward 5'-CATCGTGGCTAAACAGGTACTG-3 '(SEQ ID NO: 1), reverse 5'-GCACGACCTTGAGGGCAGC-3' (SEQ ID NO: 2).
- Each product was loaded into a 2% agarose gel, electrophoresed, electrophoresed, and gel images were taken. The images were quantified using the TotalLab v1.0 program (Nonlinear Dynamix), and then corrected for PCR. The concentration of was equally corrected.
- Example 3-2 Expression level analysis using RT-PCR / Real-Time PCR
- CDNA diluted to the same amount was subjected to PCR using the sense and antisense primers of the genes.
- cDNA was mixed into 3 ⁇ l, 2x premix 10 ⁇ l, primer 2 ⁇ l each (20 pmole) and distilled water 2 ⁇ l into 20 ⁇ l total solution.
- PCR reaction was 94 °C 1min, 54 °C 30sec, 72 °C 1min. Cycles vary by gene.
- it was electrophoresed using 2% agarose gel and analyzed using an imaging apparatus. Realtime RT-PCR was used with DNASYBRI reagent from Qiagen (CA, USA) and LightCycler (Roche).
- Example 3 Using donor adipose stem cell samples (cultivated in basal medium and proliferation medium), the expression level of some of the genes identified in Example 3 was analyzed by protein quantification by Western blot analysis.
- the cells grown in a 60 mm dish was rinsed once with PBS, and then, cold protein lysis buffer (RIPA cell lysis buffer: 50 mM Tris-Cl (pH 7.5), 150 mM NaCl, 1% Nonidet P-40, 10).
- % Glycerol, 1 mM PMSF, 1 mM DTT, 20 mM NaF, 1 mM EDTA, protease inhibitors were added to prepare the proteins of the cells.
- SDS-PAGE sodium dodecyl sulfate polyacrylamide gel electrophoresis
- an antibody corresponding to each protein was attached.
- Information on antibodies is as follows. anti-ANXA10 (Santa Cruz, sc-70009), anti-IGF2BP3 (Santa Cruz, sc-100766), anti-PTGER2 (abcam, ab16151), anti-ITGA11 (ab107858), anti-PAWR (Sigma A0545), anti- ACTIN (Sigma, A5316).
- the amount of each protein was identified by band using Immobilon TM Western Blotting Detection reagents (Millipore).
- ANXA10, IGF2BP3 and PTGER2 genes whose mRNA levels are increased in the growth medium through RT-PCR of the genes, low protein expression in the basal medium and high protein expression in the growth medium, which is consistent with the results of mRNA experiments
- ITGA11 and PAWR genes whose mRNA levels decrease with increasing passage in the growth medium, the expression of the protein in the basal medium and the decrease in the expression of the protein in the growth medium were observed. It was confirmed (FIG. 6).
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Abstract
Description
유전자(REF) | 프라이머 | 서열번호 |
RPL13A(NM_012423.02) | F: 5'-catcgtggctaaacaggtactg-3' | 서열번호 1 |
R: 5'-gcacgaccttgagggcagc-3' | 서열번호 2 | |
AGPAT9(NM_032717.3) | F: 5'-aatcttgacaacggatggat-3' | 서열번호 3 |
R: 5'-caaaccagacatgaggacaa-3' | 서열번호 4 | |
ANXA10(NM_007193.3) | F: 5'-cgagacaaaccagcctattt-3' | 서열번호 5 |
R: 5'-tggtcagcaggtctatttca-3' | 서열번호 6 | |
IGF2BP3(NM_006547.2) | F: 5'-cacctgatgagaatgaccaa-3' | 서열번호 7 |
R: 5'-actttgcagagccttctgtt-3' | 서열번호 8 | |
PTGER2(NM_000956.2) | F: 5'-cacctcattctcctggctat-3' | 서열번호 9 |
R: 5'-gaggtcccatttttcctttc-3' | 서열번호 10 | |
ITGA11(NM_001004439.1) | F: 5'-tgaggtccctaaaagcactc-3' | 서열번호 11 |
R: 5'-cagtcctcttgcttggagat-3' | 서열번호 12 | |
PAWR(NM_002583.2) | F: 5'-caggagccacctagaacagt-3' | 서열번호 13 |
R: 5'-tacctgaaacatttgcatcc-3' | 서열번호 14 | |
SFRP2(NM_003013.2) | F: 5'-aaaatcatcctggagaccaa-3' | 서열번호 15 |
R: 5'-tgtcgttcatctcctcacag-3' | 서열번호 16 |
Claims (11)
- AGPAT9(1-acylglycerol-3-phosphate O-acyltransferase 9), ANXA10(annexin A10), IGF2BP3(insulin-like growth factor 2 binding protein 3), PTGER2(prostaglandin E receptor 2), ITGA11(integrin, alpha 11), PAWR(PRKC, apoptosis, WT1, regulator) 및 SFRP2(secreted frizzled-related protein 2)로 이루어진 군으로부터 선택되는 1개 이상의 유전자 mRNA 또는 이의 단백질 수준을 측정하는 제제를 포함하는, EGF(Epidermal growth factor) 또는 bFGF(basic fibroblast growth factor)를 포함하는 배지에서 배양한 지방유래 줄기세포의 치료능력 탐지를 위한 마커 검출용 조성물.
- AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR 및 SFRP2로 이루어진 군으로부터 선택되는 1개 이상의 유전자 mRNA 또는 이의 단백질 수준을 측정하는 제제를 포함하는, EGF 또는 bFGF를 포함하는 배지에서 배양한 지방유래 줄기세포의 증식능력 탐지를 위한 마커 검출용 조성물.
- 제1항 또는 제2항에 있어서, 상기 유전자 mRNA의 수준을 측정하는 제제는 상기 유전자에 특이적으로 결합하는 프라이머쌍 또는 프로브를 포함하는 것인 조성물.
- 제1항 또는 제2항에 있어서, 상기 단백질의 수준을 측정하는 제제는 상기 단백질에 특이적인 항체를 포함하는 것인 조성물.
- 제1항의 조성물을 포함하는, EGF 또는 bFGF를 포함하는 배지에서 배양한 지방유래 줄기세포의 치료능력을 탐지하기 위한 마커 검출용 키트.
- 제2항의 조성물을 포함하는, EGF 또는 bFGF를 포함하는 배지에서 배양한 지방유래 줄기세포의 증식능력을 탐지하기 위한 마커 검출용 키트.
- 제5항 또는 제6항에 있어서, 상기 키트는 RT-PCR 키트, DNA 칩 키트 또는 단백질 칩 키트인 마커 검출용 키트.
- EGF 또는 bFGF를 포함하는 배지에서 배양한 지방유래 줄기세포의 AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR 및 SFRP2로 이루어진 군으로부터 선택되는 1개 이상의 유전자 mRNA 또는 이의 단백질 수준을 측정하는 단계를 포함하는, 지방유래 줄기세포의 치료능력 탐지 방법.
- EGF 또는 bFGF를 포함하는 배지에서 배양한 지방유래 줄기세포의 AGPAT9, ANXA10, IGF2BP3, PTGER2, ITGA11, PAWR 및 SFRP2로 이루어진 군으로부터 선택되는 1개 이상의 유전자 mRNA 또는 이의 단백질 수준을 측정하는 단계를 포함하는, 지방유래 줄기세포의 증식능력 탐지 방법.
- 제8항에 있어서, 상기 방법은 ITGA11, PAWR 및 SFRP2로 이루어진 군으로부터 선택되는 1개 이상의 유전자 mRNA 또는 이의 단백질의 양이 대조군인 기저배지에서 배양한 지방유래 줄기세포에서 측정한 값에 비해 적으면, 치료능력이 대조군에 비하여 높은 것으로 판단하는 단계를 추가로 포함하는, 지방유래 줄기세포의 치료능력 탐지 방법.
- 제8항에 있어서, 상기 방법은 AGPAT9, ANXA10, IGF2BP3 및 PTGER2로 이루어진 군으로부터 선택되는 1개 이상의 유전자 mRNA 또는 이의 단백질의 양이 대조군인 기저배지에서 배양한 지방유래 줄기세포에서 측정한 값에 비해 많으면, 치료능력이 대조군에 비하여 높은 것으로 판단하는 단계를 추가로 포함하는, 지방유래 줄기세포의 치료능력 탐지 방법.
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CN105368959B (zh) * | 2015-12-15 | 2019-01-04 | 甘肃中天羊业股份有限公司 | Anxa10基因作为绵羊免疫性状的分子标记及其应用 |
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KR20140145011A (ko) | 2014-12-22 |
EP3009521A1 (en) | 2016-04-20 |
JP6793037B2 (ja) | 2020-12-02 |
US9874574B2 (en) | 2018-01-23 |
JP2016521569A (ja) | 2016-07-25 |
EP3009521B1 (en) | 2018-08-01 |
CN105264089B (zh) | 2018-11-16 |
US20160178648A1 (en) | 2016-06-23 |
KR101603633B1 (ko) | 2016-03-15 |
EP3009521A4 (en) | 2017-01-04 |
CN105264089A (zh) | 2016-01-20 |
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