CN112126618B - 一种人胆囊干细胞的获取和长期体外培养的方法 - Google Patents
一种人胆囊干细胞的获取和长期体外培养的方法 Download PDFInfo
- Publication number
- CN112126618B CN112126618B CN201910546992.0A CN201910546992A CN112126618B CN 112126618 B CN112126618 B CN 112126618B CN 201910546992 A CN201910546992 A CN 201910546992A CN 112126618 B CN112126618 B CN 112126618B
- Authority
- CN
- China
- Prior art keywords
- cell
- cells
- culture
- stem cells
- liquid
- 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.)
- Active
Links
- 210000000232 gallbladder Anatomy 0.000 title claims abstract description 90
- 210000000130 stem cell Anatomy 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000000338 in vitro Methods 0.000 title claims abstract description 20
- 230000007774 longterm Effects 0.000 title claims abstract description 16
- 210000004027 cell Anatomy 0.000 claims abstract description 115
- 239000001963 growth medium Substances 0.000 claims abstract description 44
- 210000001519 tissue Anatomy 0.000 claims abstract description 34
- 229920002527 Glycogen Polymers 0.000 claims abstract description 15
- 229940096919 glycogen Drugs 0.000 claims abstract description 15
- 230000010261 cell growth Effects 0.000 claims abstract description 12
- 238000012258 culturing Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 57
- 239000003112 inhibitor Substances 0.000 claims description 29
- 239000006228 supernatant Substances 0.000 claims description 28
- 239000000654 additive Substances 0.000 claims description 20
- 230000000996 additive effect Effects 0.000 claims description 20
- 239000007640 basal medium Substances 0.000 claims description 20
- 238000004113 cell culture Methods 0.000 claims description 17
- 238000007664 blowing Methods 0.000 claims description 15
- 230000029087 digestion Effects 0.000 claims description 15
- 108010082117 matrigel Proteins 0.000 claims description 15
- UCSJYZPVAKXKNQ-HZYVHMACSA-N streptomycin Chemical compound CN[C@H]1[C@H](O)[C@@H](O)[C@H](CO)O[C@H]1O[C@@H]1[C@](C=O)(O)[C@H](C)O[C@H]1O[C@@H]1[C@@H](NC(N)=N)[C@H](O)[C@@H](NC(N)=N)[C@H](O)[C@H]1O UCSJYZPVAKXKNQ-HZYVHMACSA-N 0.000 claims description 12
- 101500025419 Homo sapiens Epidermal growth factor Proteins 0.000 claims description 11
- PWKSKIMOESPYIA-BYPYZUCNSA-N L-N-acetyl-Cysteine Chemical compound CC(=O)N[C@@H](CS)C(O)=O PWKSKIMOESPYIA-BYPYZUCNSA-N 0.000 claims description 11
- 229960004308 acetylcysteine Drugs 0.000 claims description 11
- 239000006285 cell suspension Substances 0.000 claims description 11
- 229940116978 human epidermal growth factor Drugs 0.000 claims description 11
- 210000004400 mucous membrane Anatomy 0.000 claims description 11
- GVUGOAYIVIDWIO-UFWWTJHBSA-N nepidermin Chemical compound C([C@@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CS)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CC=1C=CC(O)=CC=1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(O)=O)NC(=O)CNC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@H](CS)NC(=O)[C@H](CC(N)=O)NC(=O)[C@H](CS)NC(=O)[C@H](C)NC(=O)[C@H](CC=1C=CC(O)=CC=1)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](C)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@@H](NC(=O)[C@H](CC=1C=CC(O)=CC=1)NC(=O)[C@H](CCSC)NC(=O)[C@H](CS)NC(=O)[C@@H](NC(=O)CNC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CC=1NC=NC=1)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CS)NC(=O)[C@H](CC=1C=CC(O)=CC=1)NC(=O)CNC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CC=1NC=NC=1)NC(=O)[C@H](CO)NC(=O)[C@H](CC(C)C)NC(=O)[C@H]1N(CCC1)C(=O)[C@H](CS)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CO)NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](CO)NC(=O)[C@@H](N)CC(N)=O)C(C)C)[C@@H](C)CC)C(C)C)C(C)C)C1=CC=C(O)C=C1 GVUGOAYIVIDWIO-UFWWTJHBSA-N 0.000 claims description 11
- 102000018233 Fibroblast Growth Factor Human genes 0.000 claims description 10
- 108050007372 Fibroblast Growth Factor Proteins 0.000 claims description 10
- 101000898034 Homo sapiens Hepatocyte growth factor Proteins 0.000 claims description 10
- 108091000080 Phosphotransferase Proteins 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 229940126513 cyclase activator Drugs 0.000 claims description 10
- 229940126864 fibroblast growth factor Drugs 0.000 claims description 10
- 102000057308 human HGF Human genes 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 102000020233 phosphotransferase Human genes 0.000 claims description 10
- 238000003786 synthesis reaction Methods 0.000 claims description 10
- 239000013049 sediment Substances 0.000 claims description 9
- 108091006905 Human Serum Albumin Proteins 0.000 claims description 8
- 102000008100 Human Serum Albumin Human genes 0.000 claims description 8
- 102000045246 noggin Human genes 0.000 claims description 8
- 108700007229 noggin Proteins 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 239000002609 medium Substances 0.000 claims description 7
- DFPAKSUCGFBDDF-ZQBYOMGUSA-N [14c]-nicotinamide Chemical compound N[14C](=O)C1=CC=CN=C1 DFPAKSUCGFBDDF-ZQBYOMGUSA-N 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 229960005322 streptomycin Drugs 0.000 claims description 6
- JKMHFZQWWAIEOD-UHFFFAOYSA-N 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid Chemical compound OCC[NH+]1CCN(CCS([O-])(=O)=O)CC1 JKMHFZQWWAIEOD-UHFFFAOYSA-N 0.000 claims description 5
- 239000007995 HEPES buffer Substances 0.000 claims description 5
- DFPAKSUCGFBDDF-UHFFFAOYSA-N Nicotinamide Chemical compound NC(=O)C1=CC=CN=C1 DFPAKSUCGFBDDF-UHFFFAOYSA-N 0.000 claims description 5
- 102000009618 Transforming Growth Factors Human genes 0.000 claims description 5
- 239000012574 advanced DMEM Substances 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 5
- 239000006143 cell culture medium Substances 0.000 claims description 5
- ZDXPYRJPNDTMRX-UHFFFAOYSA-N glutamine Natural products OC(=O)C(N)CCC(N)=O ZDXPYRJPNDTMRX-UHFFFAOYSA-N 0.000 claims description 5
- 229960003966 nicotinamide Drugs 0.000 claims description 5
- 235000005152 nicotinamide Nutrition 0.000 claims description 5
- 239000011570 nicotinamide Substances 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 210000003771 C cell Anatomy 0.000 claims description 3
- 102000004887 Transforming Growth Factor beta Human genes 0.000 claims description 3
- 108090001012 Transforming Growth Factor beta Proteins 0.000 claims description 3
- 210000004369 blood Anatomy 0.000 claims description 3
- 239000008280 blood Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000001079 digestive effect Effects 0.000 claims description 3
- 102000038379 digestive enzymes Human genes 0.000 claims description 3
- 108091007734 digestive enzymes Proteins 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 235000011389 fruit/vegetable juice Nutrition 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 210000004877 mucosa Anatomy 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- ZRKFYGHZFMAOKI-QMGMOQQFSA-N tgfbeta Chemical compound C([C@H](NC(=O)[C@H](C(C)C)NC(=O)CNC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CC(N)=O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CC(C)C)NC(=O)CNC(=O)[C@H](C)NC(=O)[C@H](CO)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H](NC(=O)[C@H](C)NC(=O)[C@H](C)NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CCSC)C(C)C)[C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](C)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](C)C(=O)N[C@@H](CC(C)C)C(=O)N1[C@@H](CCC1)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C(O)=O)C1=CC=C(O)C=C1 ZRKFYGHZFMAOKI-QMGMOQQFSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 210000004185 liver Anatomy 0.000 abstract description 10
- 230000004069 differentiation Effects 0.000 abstract description 8
- 239000000126 substance Substances 0.000 abstract description 6
- 102000007330 LDL Lipoproteins Human genes 0.000 abstract description 4
- 108010007622 LDL Lipoproteins Proteins 0.000 abstract description 4
- 206010019663 Hepatic failure Diseases 0.000 abstract description 3
- 208000007903 liver failure Diseases 0.000 abstract description 3
- 231100000835 liver failure Toxicity 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 2
- 238000007877 drug screening Methods 0.000 abstract 1
- 230000003908 liver function Effects 0.000 abstract 1
- 210000000349 chromosome Anatomy 0.000 description 9
- 102000012804 EPCAM Human genes 0.000 description 7
- 101150084967 EPCAM gene Proteins 0.000 description 7
- 101150057140 TACSTD1 gene Proteins 0.000 description 7
- 208000019423 liver disease Diseases 0.000 description 6
- 101000998011 Homo sapiens Keratin, type I cytoskeletal 19 Proteins 0.000 description 5
- 101000711846 Homo sapiens Transcription factor SOX-9 Proteins 0.000 description 5
- 102100033420 Keratin, type I cytoskeletal 19 Human genes 0.000 description 5
- 102100034204 Transcription factor SOX-9 Human genes 0.000 description 5
- FWBHETKCLVMNFS-UHFFFAOYSA-N 4',6-Diamino-2-phenylindol Chemical compound C1=CC(C(=N)N)=CC=C1C1=CC2=CC=C(C(N)=N)C=C2N1 FWBHETKCLVMNFS-UHFFFAOYSA-N 0.000 description 4
- -1 CK17 Proteins 0.000 description 4
- WZUVPPKBWHMQCE-UHFFFAOYSA-N Haematoxylin Chemical compound C12=CC(O)=C(O)C=C2CC2(O)C1C1=CC=C(O)C(O)=C1OC2 WZUVPPKBWHMQCE-UHFFFAOYSA-N 0.000 description 4
- 101001063456 Homo sapiens Leucine-rich repeat-containing G-protein coupled receptor 5 Proteins 0.000 description 4
- 102100031036 Leucine-rich repeat-containing G-protein coupled receptor 5 Human genes 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 210000003897 hepatic stem cell Anatomy 0.000 description 4
- 210000003494 hepatocyte Anatomy 0.000 description 4
- 230000035755 proliferation Effects 0.000 description 4
- 238000002054 transplantation Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000012136 culture method Methods 0.000 description 3
- 239000012228 culture supernatant Substances 0.000 description 3
- 238000003125 immunofluorescent labeling Methods 0.000 description 3
- 210000005229 liver cell Anatomy 0.000 description 3
- 210000004940 nucleus Anatomy 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- IAKHMKGGTNLKSZ-INIZCTEOSA-N (S)-colchicine Chemical compound C1([C@@H](NC(C)=O)CC2)=CC(=O)C(OC)=CC=C1C1=C2C=C(OC)C(OC)=C1OC IAKHMKGGTNLKSZ-INIZCTEOSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000012091 fetal bovine serum Substances 0.000 description 2
- 238000000684 flow cytometry Methods 0.000 description 2
- 230000002440 hepatic effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003757 reverse transcription PCR Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- NALREUIWICQLPS-UHFFFAOYSA-N 7-imino-n,n-dimethylphenothiazin-3-amine;hydrochloride Chemical compound [Cl-].C1=C(N)C=C2SC3=CC(=[N+](C)C)C=CC3=NC2=C1 NALREUIWICQLPS-UHFFFAOYSA-N 0.000 description 1
- 102100025841 Cholecystokinin Human genes 0.000 description 1
- 101800001982 Cholecystokinin Proteins 0.000 description 1
- 108010079245 Cystic Fibrosis Transmembrane Conductance Regulator Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- MVORZMQFXBLMHM-QWRGUYRKSA-N Gly-His-Lys Chemical compound NCCCC[C@@H](C(O)=O)NC(=O)[C@@H](NC(=O)CN)CC1=CN=CN1 MVORZMQFXBLMHM-QWRGUYRKSA-N 0.000 description 1
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 1
- 102100029284 Hepatocyte nuclear factor 3-beta Human genes 0.000 description 1
- 101001062347 Homo sapiens Hepatocyte nuclear factor 3-beta Proteins 0.000 description 1
- 238000010802 RNA extraction kit Methods 0.000 description 1
- 102000001742 Tumor Suppressor Proteins Human genes 0.000 description 1
- 108010040002 Tumor Suppressor Proteins Proteins 0.000 description 1
- 229960000583 acetic acid Drugs 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000003698 anagen phase Effects 0.000 description 1
- 235000021120 animal protein Nutrition 0.000 description 1
- 239000000427 antigen Substances 0.000 description 1
- 102000036639 antigens Human genes 0.000 description 1
- 108091007433 antigens Proteins 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 210000000013 bile duct Anatomy 0.000 description 1
- 210000003445 biliary tract Anatomy 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003915 cell function Effects 0.000 description 1
- 230000006727 cell loss Effects 0.000 description 1
- 210000003855 cell nucleus Anatomy 0.000 description 1
- 238000003320 cell separation method Methods 0.000 description 1
- 238000002659 cell therapy Methods 0.000 description 1
- 229940107137 cholecystokinin Drugs 0.000 description 1
- 229960001338 colchicine Drugs 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 210000001953 common bile duct Anatomy 0.000 description 1
- 210000003459 common hepatic duct Anatomy 0.000 description 1
- 239000002299 complementary DNA Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- UREBDLICKHMUKA-CXSFZGCWSA-N dexamethasone Chemical compound C1CC2=CC(=O)C=C[C@]2(C)[C@]2(F)[C@@H]1[C@@H]1C[C@@H](C)[C@@](C(=O)CO)(O)[C@@]1(C)C[C@@H]2O UREBDLICKHMUKA-CXSFZGCWSA-N 0.000 description 1
- 229960003957 dexamethasone Drugs 0.000 description 1
- UQLDLKMNUJERMK-UHFFFAOYSA-L di(octadecanoyloxy)lead Chemical compound [Pb+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O UQLDLKMNUJERMK-UHFFFAOYSA-L 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 210000002603 extrahepatic bile duct Anatomy 0.000 description 1
- 238000001943 fluorescence-activated cell sorting Methods 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000005847 immunogenicity Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 102000008371 intracellularly ATP-gated chloride channel activity proteins Human genes 0.000 description 1
- 210000005228 liver tissue Anatomy 0.000 description 1
- 230000031864 metaphase Effects 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 239000013642 negative control Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 210000001778 pluripotent stem cell Anatomy 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008672 reprogramming Effects 0.000 description 1
- 238000010839 reverse transcription Methods 0.000 description 1
- IZTQOLKUZKXIRV-YRVFCXMDSA-N sincalide Chemical compound C([C@@H](C(=O)N[C@@H](CCSC)C(=O)NCC(=O)N[C@@H](CC=1C2=CC=CC=C2NC=1)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(N)=O)NC(=O)[C@@H](N)CC(O)=O)C1=CC=C(OS(O)(=O)=O)C=C1 IZTQOLKUZKXIRV-YRVFCXMDSA-N 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 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
- C12N5/0625—Epidermal cells, skin cells; Cells of the oral mucosa
-
- 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
- C12N2500/00—Specific components of cell culture medium
- C12N2500/30—Organic components
-
- 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
- C12N2500/00—Specific components of cell culture medium
- C12N2500/30—Organic components
- C12N2500/32—Amino acids
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/11—Epidermal growth factor [EGF]
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/113—Acidic fibroblast growth factor (aFGF, FGF-1)
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/115—Basic fibroblast growth factor (bFGF, FGF-2)
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/119—Other fibroblast growth factors, e.g. FGF-4, FGF-8, FGF-10
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/12—Hepatocyte growth factor [HGF]
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/10—Growth factors
- C12N2501/15—Transforming growth factor beta (TGF-β)
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/70—Enzymes
- C12N2501/72—Transferases [EC 2.]
- C12N2501/727—Kinases (EC 2.7.)
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/998—Proteins not provided for elsewhere
-
- 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
- C12N2501/00—Active agents used in cell culture processes, e.g. differentation
- C12N2501/999—Small molecules not provided for elsewhere
-
- 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
- C12N2509/00—Methods for the dissociation of cells, e.g. specific use of enzymes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Genetics & Genomics (AREA)
- Zoology (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biotechnology (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Dermatology (AREA)
- Microbiology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Cell Biology (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
本发明涉及生物医药工程技术领域技术领域,提供了一种人胆囊干细胞的获取和长期体外培养的方法,包括人胆囊干细胞的获取方法以及人胆囊干细胞的长期体外培养方法,分别提供了一种化学成分明确的原代培养基以及细胞扩增培养基。本发明采用该两种培养基实现了从人胆囊组织中选择性扩增胆囊干细胞,该细胞可在此条件下体外连续培养超过100天,并维持稳定的肝干细胞相关分子表型;诱导分化后细胞具有部分肝脏功能,包括摄取低密度脂蛋白、合成脂肪以及贮存糖原。因此,本发明获得的胆囊源干细胞可用作肝衰竭疾病细胞治疗的种子细胞、药物筛选、组织工程肝脏和人工肝的制备。
Description
技术领域
本发明涉及生物医药工程技术领域,涉及一种人胆囊干细胞的长期体外培养和扩增方法,包括一种化学成份明确的原代培养基,用于人胆囊干细胞的原代体外培养;以及一种化学成份明确的扩增培养基,用于人胆囊干细胞长期扩增培养。
背景技术
胆囊干细胞是指位于胆管系统上一群具有增殖和分化能力的细胞。大量研究表明胆囊干细胞分布于肝脏内的小胆管(Hering’s管)和肝外胆管组织中,包括胆囊、胆总管和肝管等(Cardinale V,Wang Y,Carpino G,Mendel G,Alpini G,Gaudio E,Reid LM,AlvaroD,The biliary tree—a reservoir ofmultipotent stem cells.Nat RevGastroenterol Hepatol.2012 Feb 28;9(4):231-40.)。胆囊干细胞在体外合适的培养条件下具有较强的增殖能力,可稳定扩增。通过改变培养条件,可诱导胆囊干细胞分化为肝细胞样细胞和胆管细胞。目前常用的胆囊干细胞培养方法都依赖于胎牛血清,含有胎牛血清的培养基具有成分不明确、动物蛋白丰富等缺陷,因此需要建立化学成分明确的胆囊干细胞培养体系用来扩增目的细胞。
人来源胆囊干细胞的分离获取和扩增培养对于转化应用具有重要意义。我国每年约有30万人死于各种因素导致的肝脏衰竭。肝移植是目前治疗相关疾病最有效的手段,但是可移植肝脏供体的严重匮乏限制了该治疗方法的应用,多数肝病患者在等待过程中失去生命。相关临床研究表明,如果使用成熟肝细胞或者干细胞移植到患者体内,可延长患者存活时间(可等到合适移植供体),甚至有些细胞移植可挽救患者生命而不再需要肝移植。因而,如有合适且充足的细胞作为肝病治疗用候选供体将是重要突破。
目前可用的候选供体细胞主要包括诱导多能干细胞分化而来的肝样细胞、重编程直接获得的肝样细胞等。这些类型的细胞有些通过基因改造获得,有些具有免疫原性等未知风险,因此并未尝试临床上细胞移植的应用(Wang J,Sun M,Liu W,Li Y,Li M,StemCell-Based Therapies for Liver Diseases:An Overview and Update.Tissue EngRegen Med.2019Feb 21;16(2):107-118;Zhu T,Li Y,Guo Y,Zhu C,The Development ofStem Cell-Based Treatment for Liver Failure.Curr Stem Cell Res Ther.2017;12(7):554-563.)。
综合来看,获得数量充足、未经修饰、具有治疗潜能的细胞将是肝脏疾病细胞治疗领域的重要突破。
发明内容
本发明是为解决上述问题而进行的,针对现有技术中胆囊干细胞体外培养过程中的缺陷,提供了一种人胆囊干细胞的获取和长期体外培养的方法。
本发明的第一方面,提供了一种人胆囊干细胞的获取方法,通过该方法能够从人胆囊组织中快速分离获取目的细胞。分离方法如下:
A、获取胆囊内壁黏膜层细胞;
B、获取胆囊内壁黏膜层细胞单细胞
吸取含有胆囊内壁黏膜层细胞的液体基础培养基至离心管,300g离心5~7分钟后弃上清,加入Accutase消化酶,轻轻吹打沉淀,重悬细胞,置于37℃孵育20~30分钟,期间每隔5分钟震荡一次,消化成单细胞;
C、胆囊干细胞筛选
向步骤B中加入液体基础培养基混匀,离心去上清后采用Matrigel基质胶重悬,吹打均匀后接种于24孔细胞培养板中,并置于细胞培养箱中37℃培养,待液滴凝固后在每孔加入原代培养基,覆盖液滴后放入培养箱中进行培养,生成的圆形透明细胞克隆即为胆囊干细胞克隆,随着培养天数的增加,细胞克隆逐渐长大。
优选的,步骤A中获取胆囊内壁黏膜层细胞的方法如下:
将获得的人胆囊组织4℃置于液体基础培养基中保存,然后在无菌环境中取出组织,并沿着组织纵向剪开并充分展开组织;用无菌PBS反复清洗组织至溶液颜色澄清无血色,然后将组织转移至装有预冷液体基础培养基的培养皿中;用无菌一次性性手术刀片刮取下胆囊内壁黏膜层细胞,并用基础培养基冲洗胆囊内壁,弃掉胆囊组织,获得胆囊内壁黏膜层细。
优选的,步骤C中胆囊干细胞筛选的具体流程如下:
向步骤B中加入液体基础培养基混匀,400g离心5~7分钟后弃上清;根据细胞量,用Matrigel基质胶重悬细胞沉淀,吹打均匀;将含有细胞的基质胶按照每孔50μL的体积量接种于24孔细胞培养板中央,使其形成圆形液滴;将培养板置于37℃细胞培养箱中15-30分钟,待其凝固后在每孔加入原代培养基,覆盖液滴,放入培养箱;培养第二天观察到有圆形透明的胆囊干细胞细胞克隆生成,并随着培养天数的增加,细胞克隆逐渐长大。
上述步骤A~C中所使用的液体基础培养基的配方为Advanced DMEM/F12细胞培养基,终浓度为2mM谷氨酰胺以及终浓度为1mM HEPES缓冲液。
在本发明所提供的人胆囊干细胞的获取方法中,关键工作在于提供了一种化学成分明确的原代培养基,该原代培养基包含如下组分:液体基础培养基、1×B27添加剂、1×N2添加剂、1×青链霉素、0.1-50mM N-乙酰半胱氨酸、0.1-100ng/mL R-spondin、1-1000mM尼克酰胺、0.1-100ng/mL重组人表皮生长因子、0.1-100ng/mL重组人成纤维生长因子、0.1-100ng/mL重组人肝细胞生长因子、0.1-50μM cAMP环化酶激活剂、0.1-100μM TGFβ抑制剂、1nM-10μM的糖原合成激酶3β抑制剂、0.1-10%人血清白蛋白、0.1-100ng/mL重组人Noggin蛋白、0.1-100μM Rock抑制剂。
优选包括:液体基础培养基、1×B27添加剂、1×N2添加剂、1×青链霉素、1~3mMN-乙酰半胱氨酸、25~50ng/mL R-spondin、5~15mM尼克酰胺、25~50ng/mL重组人表皮生长因子、50~100ng/mL重组人成纤维生长因子、25~50ng/mL重组人肝细胞生长因子、5~20μM cAMP环化酶激活剂、5~10μM TGFβ抑制剂、5~10μM的糖原合成激酶3β抑制剂、8~10%人血清白蛋白、50~100ng/mL重组人Noggin蛋白、10~20μM Rock抑制剂。
本发明的第二方面,提供了一种人胆囊干细胞的长期体外培养方法,包括如下步骤:
A、待胆囊干细胞克隆长满,弃上清,加入预冷的液体基础培养基,并吹打均匀;
B、将每几孔细胞悬液为一组吸取至离心管中,补足液体基础培养基并吹打混匀细胞悬液后400g离心,弃去上清,加入TrypLE消化液,置于37℃水浴锅中消化10~15分钟,期间震荡1至两次,完成细胞消化;
C、消化完成后加入液体基础培养基混匀,离心弃上清,沉淀重复清洗后弃尽上清,采用Matrigel基质胶重悬,吹打均匀后接种于24孔细胞培养板中,并置于细胞培养箱中37℃培养,待液滴凝固后在每孔加入细胞扩增培养基,覆盖液滴后放入37℃培养箱中进行培养,细胞连续传代并大量扩增。
优选的,步骤B中,将每三孔细胞悬液为一组,吸取至15mL离心管中,补足液体至14mL,使用25mL移液器吹打混匀细胞悬液,而后400g离心5分钟,弃去上清;步骤C中,消化完成后加入液体基础培养基至14mL,混匀,400g离心5分钟,弃上清,重复清洗两遍,最后一遍弃尽上清,然后采用Matrigel基质胶重悬细胞沉淀,吹打均匀。
上述步骤A~C中所使用的液体基础培养基的配方为Advanced DMEM/F12细胞培养基,终浓度为2mM谷氨酰胺以及终浓度为1mM HEPES缓冲液。
在本发明所提供的人胆囊干细胞的长期体外培养方法中,关键工作也在于提供了一种化学成分明确的细胞扩增培养基,该细胞扩增培养基包括液体基础培养基、1×B27添加剂、1×N2添加剂、1×青链霉素、0.1-50mM N-乙酰半胱氨酸、0.1-100ng/mL R-spondin、1-1000mM尼克酰胺、0.1-100ng/mL重组人表皮生长因子、0.1-100ng/mL重组人成纤维生长因子、0.1-100ng/mL重组人肝细胞生长因子、0.1-50μM cAMP环化酶激活剂、0.1-100μM TGFβ抑制剂、1nM-10μM的糖原合成激酶3β抑制剂。
优选包括:液体基础培养基、1×B27添加剂、1×N2添加剂、1×青链霉素、1~3mMN-乙酰半胱氨酸、25~50ng/mL R-spondin、5~15mM尼克酰胺、25~50ng/mL重组人表皮生长因子、50~100ng/mL重组人成纤维生长因子、25~50ng/mL重组人肝细胞生长因子、5~20μM cAMP环化酶激活剂、5~10μM TGFβ抑制剂、5~10μM的糖原合成激酶3β抑制剂。
该培养基与原代培养基对比,缺少了人血清白蛋白、重组人Noggin蛋白、Rock抑制剂三种组分。
通过验证,上述两种培养基能够辅助从人胆囊组织中快速分离出目的细胞,并在体外进行长期、稳定和大量的细胞扩增,获得数量充足且表型稳定的细胞。
因此,本发明的第三方面提供了一种通过上述人胆囊干细胞的获取方法以及长期体外培养方法制备得到的胆囊干细胞。
通过RT-PCR检测以及免疫荧光染色分析,根据本发明的方法培养得到的胆囊干细胞表达CK19、SOX9以及EPCAM等典型肝干细胞标志物;通过染色体分析,其染色体为46条;通过流式细胞术分析,细胞纯度高达95%以上。表明本发明建立的培养体系可以从人胆囊组织中扩增干细胞,并可以在体外维持人胆囊干细胞的长期稳定增殖。
本发明的第四方面提供了该胆囊干细胞在制备肝脏疾病的治疗细胞、肝脏组织工程、肝脏疾病体外药物筛选中的用途。
通过实施例3可知,本发明的人胆囊干细胞能够被诱导分化为具有成熟肝细胞功能的细胞,用于上述用途。
本发明的有益保障及效果如下:
使用本发明提供的细胞分离和培养方法,可实现从人胆囊组织快速分离出细胞并选择性扩增胆囊上皮干细胞,胆囊干细胞可在此培养条件下连续传代生长超过100天,并且维持稳定的肝干细胞相关表型。
此外,本发明的方法无需使用磁珠或者流式分选等高成本细胞纯化手段,细胞纯度可达95%以上,大大降低了胆囊干细胞的制备成本。通过诱导分化,细胞具有摄取低密度脂蛋白、合成脂肪以及贮存糖原等成熟肝细胞的功能,为临床干细胞提供进行了有益探索。
附图说明
图1为人胆囊干细胞生长形态图。
其中:A为相差显微镜拍摄的原代细胞生长图片,分别拍摄于培养后的第一天、第三天、第五天以及第七天(标为Day 1,Day 3,Day 5,Day 7),图中标尺为100μm;B为相差显微镜拍摄的P6代细胞在第一百天时的形态图片,图中标尺为500μm。
图2为人胆囊干细胞具有典型的肝干细胞分子表型。
通过RT-PCR检测,细胞表达A1AT,GGT,HNF4a,CD133,CK17,EPCAM,SOX9,HNF1β,LGR5,FOXA2,CFTR以及CK19。其中hGB-1和hGB-2为P1代细胞的两个独立样本,hGB-1P6表示第六代细胞,阴性对照为水(H2O)。
图3为人胆囊干细胞表达肝干细胞标志物。
免疫荧光染色显示,细胞表达CK19,EPCAM,SOX9以及HNF4a(绿色),细胞核为DAPI染色(蓝色),图中标尺为100μm。
图4为人胆囊干细胞染色体众数分析。
A:培养第100天细胞的典型染色体分布,染色体为吉姆萨染色,在100倍油镜下拍摄,图示为典型的细胞分裂中期染色体型态,计数为46条,图中标尺为50μm;B:不同培养天数细胞的染色体数目统计。
图5为人胆囊干细胞纯度鉴定。
流式细胞术分析结果显示,P3代的细胞(A)和P6代的细胞(B)都表达EPCAM和LGR5,并且细胞阳性率为95%以上。
图6为分化的人胆囊干细胞具有典型的成熟肝细胞功能。
A:细胞可摄入低密度脂蛋白(绿色荧光染料标记),细胞核为DAPI染色(蓝色);B:糖原染色显示部分细胞呈紫红色强阳性,表明细胞可贮存糖原,细胞核为苏木素染色;C:油红染色显示部分细胞为阳性(红色油滴状沉淀),表明细胞可合成脂肪,细胞核为苏木素染色。图中标尺均为100μm。
具体实施方式
现结合实施例对本发明作详细描述,但本发明的实施不仅限于此。
本发明所用试剂和原料均市售可得或可按文献方法制备。下列实施例中未注明具体条件的实验方法,通常按照常规条件或按照制造厂商所建议的条件。除非另外说明,否则百分比和份数按体积计算。
实施例1.人胆囊干细胞的快速分离
A、获取胆囊内壁黏膜层细胞
获取人胆囊组织后(医院手术摘除),置于液体基础培养基中保存,运输至实验室;在无菌环境中取出组织,沿着组织纵向剪开并充分展开组织,用无菌PBS反复清洗组织至溶液颜色澄清无血色;将组织转移至装有预冷基础培养基的10cm培养皿中,用无菌一次性性手术刀片刮取下胆囊内壁黏膜层细胞,用基础培养基冲洗胆囊内壁,弃掉胆囊组织。
B、获取胆囊内壁黏膜层细胞单细胞
吸取含有细胞的培养基至50ml离心管,300g离心5分钟,弃上清,加入Accutase消化酶,轻轻吹打沉淀,重悬细胞,置于37℃孵育20分钟,期间每隔5分钟震荡一次,消化成单细胞。
C、胆囊干细胞筛选
向步骤B中加入液体基础培养基混匀,400g离心5~7分钟后弃上清;根据细胞量,用Matrigel基质胶重悬细胞沉淀,吹打均匀;将含有细胞的基质胶按照每孔50μL的体积量接种于24孔细胞培养板中央,使其形成圆形液滴;将培养板置于37℃细胞培养箱中15-30分钟,待其凝固后在每孔加入原代培养基,覆盖液滴,放入培养箱;培养第二天观察到有圆形透明的胆囊干细胞细胞克隆生成,并随着培养天数的增加,细胞克隆逐渐长大,如图1A所示。
上述步骤A~C中所使用的液体基础培养基的配方为Advanced DMEM/F12细胞培养基,终浓度为2mM谷氨酰胺以及终浓度为1mM HEPES缓冲液。
该原代培养基包含如下组分:液体基础培养基、1×B27添加剂、1×N2添加剂、1×青链霉素、0.1-50mM N-乙酰半胱氨酸、0.1-100ng/mL R-spondin、1-1000mM尼克酰胺、0.1-100ng/mL重组人表皮生长因子、0.1-100ng/mL重组人成纤维生长因子、0.1-100ng/mL重组人肝细胞生长因子、0.1-50μM cAMP环化酶激活剂、0.1-100μM TGFβ抑制剂、1nM-10μM的糖原合成激酶3β抑制剂、0.1-10%人血清白蛋白、0.1-100ng/mL重组人Noggin蛋白、0.1-100μM Rock抑制剂。
优选包括:液体基础培养基、1×B27添加剂、1×N2添加剂、1×青链霉素、1~3mMN-乙酰半胱氨酸、25~50ng/mL R-spondin、5~15mM尼克酰胺、25~50ng/mL重组人表皮生长因子、50~100ng/mL重组人成纤维生长因子、25~50ng/mL重组人肝细胞生长因子、5~20μM cAMP环化酶激活剂、5~10μM TGFβ抑制剂、5~10μM的糖原合成激酶3β抑制剂、8~10%人血清白蛋白、50~100ng/mL重组人Noggin蛋白、10~20μM Rock抑制剂。
实施例2.人胆囊干细胞的扩增培养
1、细胞的扩增
待细胞克隆长满(7-10天),可进行消化传代。具体步骤为,(A)吸取上清并弃掉,加入预冷的液体基础培养基,用1ml移液枪吸取含有细胞的基质胶,反复吹打至胶体破碎,使团块均匀的分布于液体中。(B)将每三孔细胞悬液吸取至15ml离心管中,补足液体至14ml,使用25ml移液器吹打混匀细胞悬液。400g离心5分钟,尽量弃去上清。加入TrypLE消化液,置于37℃水浴锅中消化10分钟,期间适量震荡。(C)消化完成后加入液体基础培养基至14ml,混匀,400g离心5分钟,弃上清,重复清洗2遍,最后一遍弃尽上清。采用Matrigel基质胶重悬,吹打均匀后接种于24孔细胞培养板中,并置于细胞培养箱中37℃培养,待液滴凝固后在每孔加入细胞扩增培养基,覆盖液滴后放入37℃培养箱中进行培养,细胞连续传代并大量扩增(图1B)。
本部分中所采用的细胞扩增培养基比原代培养基缺少了人血清白蛋白、重组人Noggin蛋白以及Rock抑制剂三种组分,其他组分和含量相同。
2、细胞分子表型鉴定
选择不同代数的细胞,PBS清洗、离心收取沉淀,加入TRIzol试剂裂解细胞,使用RNA抽提试剂盒(Thermo公司,具体步骤见说明书)抽提细胞RNA,使用反转录试剂盒(Thermo公司,具体步骤见说明书)获得细胞cDNA。使用肝干细胞相关引物对细胞进行PCR鉴定(为常规步骤,不作具体描述)。如图2所示,细胞表达CK19、SOX9、LGR5以及EPCAM等典型肝干细胞标志物。
3、细胞免疫荧光染色
弃去细胞培养上清,加入4%PFA溶液中室温条件下固定18-24h后,换成75%酒精室温保存,常规步骤包埋、切片。切片复水、抗原修复、封闭后,一抗4℃孵育过夜,PBST清洗三遍,荧光二抗37℃孵育半小时。清洗后DAPI封片,镜检观察。如图3所示,细胞表达CK19、SOX9、HNF4a以及EPCAM等典型肝干细胞标志物(图3)。
4、细胞的染色体制备
选择不同代数分裂旺盛处于对数生长期的细胞,加入终浓度为0.2ug/ml的秋水仙素,处理4-6h;离心收集细胞(4℃,400g/5min),PBS清洗三遍去除基质胶,注意防止细胞丢失;加入适量TrypLE酶消化5-10min,消化成单细胞后,加入PBS终止消化;收集单细胞(400g/8min),缓慢并边摇晃边加入8ml 37℃预热的低渗0.4M KCL溶液,37℃低渗处理25min。
轻缓加入500微升固定液(甲醇:冰醋酸=3:1),混匀,预固定5min;离心400g/8min,去除上清,沿壁加入5ml新鲜的固定液,室温条件下固定20min,而后离心400g/8min,去除上清,必要时可重复固定1次。加入50ul新鲜固定液轻轻重悬沉淀,80-100cm高度将悬液滴加到冰玻片上,酒精灯上微烤,晾干。新鲜配制吉姆萨染液(吉姆萨原液:稀释液=1:10)染色5-10min,流水洗掉多余染液,晾干,镜检。图4为P6代细胞典型染色体形态,计数为46条。
5、细胞流式分析检测
按照上述方法消化细胞成单细胞悬液,流式抗体孵育后使用流式细胞仪分析检测(BD FACS,常规操作)。结果显示,细胞表达LGR5和EPCAM,且纯度高达95%以上(图5)。以上结果表明本发明建立的培养体系可以从人胆囊组织中扩增干细胞,并可以在体外维持人胆囊干细胞的长期稳定增殖。
实施例3.诱导人胆囊干细胞分化为具有成熟肝细胞功能的细胞
在细胞生长密度为50%左右时,更换为肝向分化培养基。该分化培养基包括N-乙酰半胱氨酸、R-spondin、尼克酰胺、重组人表皮生长因子、重组人肝细胞生长因子、TGFβ抑制剂、地塞米松以及抑瘤素M等成熟肝细胞诱导所需的组分。
经过两周的培养,分化后的细胞可以分化具有摄取低密度脂蛋白的能力,可以贮存糖原并且合成脂肪(图6)。
以上结果表明本发明建立的肝向分化体系可以将人胆囊干细胞诱导分化为具有成熟肝细胞功能的细胞。
以上已对本发明创造的较佳实施例进行了具体说明,但本发明创造并不限于所述实施例,熟悉本领域的技术人员在不违背本发明创造精神的前提下还可作出种种的等同的变型或替换,这些等同的变型或替换均包含在本申请权利要求所限定的范围内。
Claims (8)
1.一种人胆囊干细胞的获取方法,快速从人胆囊实体组织分离得到胆囊干细胞,其特征在于,包括如下步骤:
A、获取胆囊内壁黏膜层细胞;
B、获取胆囊内壁黏膜层细胞单细胞
吸取含有胆囊内壁黏膜层细胞的液体基础培养基至离心管,300g离心5~7分钟后弃上清,加入Accutase消化酶,轻轻吹打沉淀,重悬细胞,置于37℃孵育20~30分钟,期间每隔5分钟震荡一次,消化成单细胞;
C、胆囊干细胞筛选
向步骤B中加入液体基础培养基混匀,离心去上清后采用Matrigel基质胶重悬,吹打均匀后接种于24孔细胞培养板中,并置于细胞培养箱中37℃培养,待液滴凝固后在每孔加入原代培养基,覆盖液滴后放入培养箱中进行培养,生成的圆形透明细胞克隆即为胆囊干细胞克隆,随着培养天数的增加,细胞克隆逐渐长大,
其中,所述原代培养基包含如下组分:液体基础培养基、1×B27添加剂、1×N2添加剂、1×青链霉素、0.1-50mM N-乙酰半胱氨酸、0.1-100ng/mL R-spondin、1-1000mM尼克酰胺、0.1-100ng/mL重组人表皮生长因子、0.1-100ng/mL重组人成纤维生长因子、0.1-100ng/mL重组人肝细胞生长因子、0.1-50μM cAMP环化酶激活剂、0.1-100μM TGFβ抑制剂、1nM-10μM的糖原合成激酶3β抑制剂、0.1-10%人血清白蛋白、0.1-100ng/mL重组人Noggin蛋白、0.1-100μM Rock抑制剂。
2.根据权利要求1所述的人胆囊干细胞的获取方法,其特征在于:
其中,步骤A中获取胆囊内壁黏膜层细胞的方法如下:
将获得的人胆囊组织4℃置于液体基础培养基中保存,然后在无菌环境中取出组织,并沿着组织纵向剪开并充分展开组织;用无菌PBS反复清洗组织至溶液颜色澄清无血色,然后将组织转移至装有预冷液体基础培养基的培养皿中;用无菌一次性手术刀片刮取下胆囊内壁黏膜层细胞,并用基础培养基冲洗胆囊内壁,弃掉胆囊组织,获得胆囊内壁黏膜层细胞,
步骤C中胆囊干细胞筛选的具体流程如下:
向步骤B中加入液体基础培养基混匀,400g离心5~7分钟后弃上清;根据细胞量,用Matrigel基质胶重悬细胞沉淀,吹打均匀;将含有细胞的基质胶按照每孔50μL的体积量接种于24孔细胞培养板中央,使其形成圆形液滴;将培养板置于37℃细胞培养箱中15-30分钟,待其凝固后在每孔加入原代培养基,覆盖液滴,放入培养箱;培养第二天观察到有圆形透明的胆囊干细胞细胞克隆生成,并随着培养天数的增加,细胞克隆逐渐长大。
3.根据权利要求1所述的人胆囊干细胞的获取方法,其特征在于:
其中,所述原代培养基包含如下组分:液体基础培养基、1×B27添加剂、1×N2添加剂、1×青链霉素、1~3mM N-乙酰半胱氨酸、25~50ng/mLR-spondin、5~15mM尼克酰胺、25~50ng/mL重组人表皮生长因子、50~100ng/mL重组人成纤维生长因子、25~50ng/mL重组人肝细胞生长因子、5~20μM cAMP环化酶激活剂、5~10μM TGFβ抑制剂、5~10μM的糖原合成激酶3β抑制剂、8~10%人血清白蛋白、50-100ng/mL重组人Noggin蛋白、10-20μM Rock抑制剂。
4.根据权利要求1~3任一项所述的人胆囊干细胞的获取方法,其特征在于:
其中,所述液体基础培养基的配方为Advanced DMEM/F12细胞培养基,终浓度为2mM谷氨酰胺以及终浓度为1mM HEPES缓冲液。
5.权利要求1所述的人胆囊干细胞的长期体外培养方法,其特征在于,包括如下步骤:
A、待胆囊干细胞克隆长满,弃上清,加入预冷的液体基础培养基,并吹打均匀;
B、将每几孔细胞悬液为一组吸取至离心管中,补足液体基础培养基并吹打混匀细胞悬液后400g离心,弃去上清,加入TrypLE消化液,置于37℃水浴锅中消化10~15分钟,期间震荡1至两次,完成细胞消化;
C、消化完成后加入液体基础培养基混匀,离心弃上清,沉淀重复清洗后弃尽上清,采用Matrigel基质胶重悬,吹打均匀后接种于24孔细胞培养板中,并置于细胞培养箱中37℃培养,待液滴凝固后在每孔加入细胞扩增培养基,覆盖液滴后放入37℃培养箱中进行培养,细胞连续传代并大量扩增,
其中,所述细胞扩增培养基包括液体基础培养基、1×B27添加剂、1×N2添加剂、1×青链霉素、0.1-50mM N-乙酰半胱氨酸、0.1-100ng/mL R-spondin、1-1000mM尼克酰胺、0.1-100ng/mL重组人表皮生长因子、0.1-100ng/mL重组人成纤维生长因子、0.1-100ng/mL重组人肝细胞生长因子、0.1-50μM cAMP环化酶激活剂、0.1-100μM TGFβ抑制剂、1nM-10μM的糖原合成激酶3β抑制剂。
6.根据权利要求5所述的人胆囊干细胞的长期体外培养方法,其特征在于:
其中,步骤B中,将每三孔细胞悬液为一组,吸取至15mL离心管中,补足液体至14mL,使用25mL移液器吹打混匀细胞悬液,而后400g离心5分钟,弃去上清,
步骤C中,消化完成后加入液体基础培养基至14mL,混匀,400g离心5分钟,弃上清,重复清洗两遍,最后一遍弃尽上清,然后采用Matrigel基质胶重悬细胞沉淀,吹打均匀。
7.根据权利要求5所述的人胆囊干细胞的长期体外培养方法,其特征在于:
其中,所述细胞扩增培养基包括液体基础培养基、1×B27添加剂、1×N2添加剂、1×青链霉素、1~3mM N-乙酰半胱氨酸、25~50ng/mL R-spondin、5~15mM尼克酰胺、25~50ng/mL重组人表皮生长因子、50~100ng/mL重组人成纤维生长因子、25~50ng/mL重组人肝细胞生长因子、5~20μM cAMP环化酶激活剂、5~10μM TGFβ抑制剂、5~10μM的糖原合成激酶3β抑制剂。
8.根据权利要求5~7任一项所述的人胆囊干细胞的获取方法,其特征在于:
其中,所述液体基础培养基的配方为Advanced DMEM/F12细胞培养基,终浓度为2mM谷氨酰胺以及终浓度为1mM HEPES缓冲液。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910546992.0A CN112126618B (zh) | 2019-06-24 | 2019-06-24 | 一种人胆囊干细胞的获取和长期体外培养的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910546992.0A CN112126618B (zh) | 2019-06-24 | 2019-06-24 | 一种人胆囊干细胞的获取和长期体外培养的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN112126618A CN112126618A (zh) | 2020-12-25 |
CN112126618B true CN112126618B (zh) | 2023-09-12 |
Family
ID=73849685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910546992.0A Active CN112126618B (zh) | 2019-06-24 | 2019-06-24 | 一种人胆囊干细胞的获取和长期体外培养的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112126618B (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117025503A (zh) * | 2022-05-10 | 2023-11-10 | 上海赛立维生物科技有限公司 | 肝内胆管前体样细胞、细胞制剂及制备方法和应用 |
CN115975913B (zh) * | 2023-02-03 | 2024-06-04 | 北京中医药大学深圳医院(龙岗) | 一种利用多能干细胞诱导分化胆囊祖细胞的方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105456292A (zh) * | 2009-10-30 | 2016-04-06 | 北卡罗来纳大学教堂山分校 | 来自肝外胆管树的专能干细胞及其分离方法 |
CN110913691A (zh) * | 2017-04-06 | 2020-03-24 | 北卡罗来纳大学教堂山分校 | 低温保存方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100227393A1 (en) * | 2009-03-06 | 2010-09-09 | Eric Lagasse | Liver stem cells: isolation of hepatic progenitor cells from the human gall bladder |
-
2019
- 2019-06-24 CN CN201910546992.0A patent/CN112126618B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105456292A (zh) * | 2009-10-30 | 2016-04-06 | 北卡罗来纳大学教堂山分校 | 来自肝外胆管树的专能干细胞及其分离方法 |
CN110913691A (zh) * | 2017-04-06 | 2020-03-24 | 北卡罗来纳大学教堂山分校 | 低温保存方法 |
Non-Patent Citations (1)
Title |
---|
Evidence for multipotent endodermal stem/progenitor cell populations in human gallbladder;Guido Carpino et al.;《Journal of Hepatology》;第60卷(第6期);第1195页右栏第6段、第1196页右栏第2段 * |
Also Published As
Publication number | Publication date |
---|---|
CN112126618A (zh) | 2020-12-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN113481162B (zh) | 用于快速培养肿瘤类器官的培养基、方法以及试剂盒 | |
van Harmelen et al. | Primary culture and differentiation of human adipocyte precursor cells | |
RU2346981C2 (ru) | Способ получения жизнеспособных клеток печени человека, в том числе печеночных стволовых клеток/клеток-предшественников | |
US9617515B2 (en) | Non-embryonic totipotent blastomere-like stem cells and methods therefor | |
US20070238175A1 (en) | Standardization of processes for culturing primary cells | |
US20220177852A1 (en) | Method for culturing primary cells of gastric cancer and gallbladder and bile duct cancer, and supporting reagents | |
US20050239201A1 (en) | Methods of inducing differentiation of stem cells into a specific cell lineage | |
Boheler et al. | Embryonic stem cell‐derived cardiomyocyte heterogeneity and the isolation of immature and committed cells for cardiac remodeling and regeneration | |
CN112126618B (zh) | 一种人胆囊干细胞的获取和长期体外培养的方法 | |
JP2020516257A (ja) | 凍結保存方法 | |
WO2021222816A1 (en) | Isolation and functional analysis of epithelial progenitor cells from the human lung | |
CN115261326B (zh) | 建立乳腺癌及癌旁类器官模型的培养基及培养方法 | |
CN116286655A (zh) | 一种适用于多种实体瘤类器官培养的培养基及其培养方法 | |
US20220098553A1 (en) | Method for mesenchymal stem cell isolation and osteoblast differentiation | |
KR100773253B1 (ko) | 성체줄기세포와의 공동배양을 통한 조혈모세포의 배양 및증식방법 | |
CN113337456A (zh) | 诱导分化培养基以及多能干细胞诱导分化为原始生殖细胞的方法 | |
KR102218549B1 (ko) | 인간 타액선 세포의 배양 방법 | |
EP2546334A1 (en) | Method for the in vitro proliferation of cells derived from tissues of endormal origin | |
Wu | Growth of human lung tumor cells in culture | |
Brown et al. | Long-term culture of nephron progenitor cells ex vivo | |
EP2149602B1 (en) | Method for concentration of side population cell fraction | |
US20030134422A1 (en) | Stem cell maturation for all tissue lines | |
CA2474766A1 (en) | Stem cell maturation for all tissue types | |
CN115369090A (zh) | 一种制备同源胃癌类器官的方法 | |
Speirs | Primary culture of human mammary tumor cells |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
TA01 | Transfer of patent application right | ||
TA01 | Transfer of patent application right |
Effective date of registration: 20221102 Address after: Room 1393-c, building 2, No. 1077, Zuchongzhi Road, Pudong New Area, Shanghai, 201207 Applicant after: Shanghai Beixian Biotechnology Co.,Ltd. Applicant after: PLA Naval Military Medical University Address before: Room 1393-c, building 2, No. 1077, Zuchongzhi Road, Pudong New Area, Shanghai, 201207 Applicant before: Shanghai Beixian Biotechnology Co.,Ltd. |
|
GR01 | Patent grant | ||
GR01 | Patent grant |