CN110129256A - The method for building up of one boar source 3D placental organ model - Google Patents

The method for building up of one boar source 3D placental organ model Download PDF

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CN110129256A
CN110129256A CN201910484492.9A CN201910484492A CN110129256A CN 110129256 A CN110129256 A CN 110129256A CN 201910484492 A CN201910484492 A CN 201910484492A CN 110129256 A CN110129256 A CN 110129256A
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cell
placenta
building
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pig
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吴信
殷跃帮
印遇龙
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Institute of Subtropical Agriculture of CAS
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Abstract

The invention discloses the method for building up of a boar source 3D placental organ model.It including separating placenta stem-cell, is wrapped in matrigel, organoid growth factor is added, be put into cell incubator culture.It can not long-term cultivation and the shortcomings that passage the present invention overcomes cell line model and primary cell model single cell type, immortalization or cancerization feature, primary cell, can permanently be passed on, be frozen with technical measure culture 3D pig source placenta organoid, present invention firstly provides 3D pig placenta organoid will to basic research and it is applied research have important value.

Description

The method for building up of one boar source 3D placental organ model
Technical field
The invention belongs to biological medicines and agricultural biological technical field, more particularly, to a kind of external biological model, specifically It is the method for building up of a boar source 3D placental organ model.
Background technique
Placenta includes the cell of different function, and different cells cooperate with interaction, the common function of maintaining placenta.Previous research In, cell line perhaps primary cell cell line mostly immortalization or cancer cell is used more to the research of placental function, therefore, It is larger with internal normal cell difference, can not true simulation inner body placenta feature and function.However placental trophoblasts There are many disadvantages for system: such as single cell type, two-dimensional growth, easily morphing.Although primary placenta cells derive from Internal placenta tissue, but the culture model of its single cell type feature, 2D and can not limit it the disadvantages of long-term cultivation and answer With.
Since separation placenta tissue is more difficult, and it is related to ethics problem.So the research to placental function still is limited to Cell level.In current research, researcher utilizes the villus (a kind of small foliation structure) from placenta tissue, these Trophoderm organoid can long-term surviving, there is genetic stability and be organized into down-like structure, secrete required protein and Hormone, these protein and hormone will affect metabolism of the mother during pregnancy;It is further analysis shows, organoid with Normal placenta of early pregnancy is closely similar.Therefore researcher can record positive reaction in pregnancy tests in vitro The .Trophoblast such as (Turco MY, ' organoids as a model for maternal-fetal Interactions during human placentation.Nature, 2018,564,263-267).3D placenta organoid It include cytotrophoblast and plasmoditropho blast functional area, the invention can ensure that 3D pig placental from placenta stem-cell Organ infinitely passes on, and keeps feature (plasmoditropho blast and cytotrophoblast functional area) constant, therefore the model has Huge basic research and application study value.
And for a long time, body outer cell line is used for the model of pig evaluation of nutrition.But two-dimentional (2D) cell line model exists Many inherent defects: being in monolayer growth, can not three-dimensional structure in analogue body;Only contain single cell type, with internal group It knits and differs greatly with organ many cells composition;Immortalize or cancerization cell line easily morph, with internal cell physiological difference compared with Greatly;Primary cell can not long-term cultivation in vitro.Therefore, cell line and primary cell model are not ideal external models.Three Dimension placenta organoid provides possibility to solve this problem.Placental trophoblast organoid derives from placenta stem-cell, in three-dimensional Three-dimensional growth;The nearly all cell type of placental epithelial in occlusion body;Include placental epithelial villus and crypts functional areas;It can be long-term Culture is without genetic mutation, is the ideal model for studying placenta growth development, physiology and function therefore, is also research tire The transhipment of disk nutriment and metabolism provide Important Platform.
China is important pig raising big country, and pork yield and consumption figure account for more than half of world standard.Sow breeding Degraded performance, the piglet death rate are higher, are still the major obstacle for perplexing the development of China's pig breeding industry.Placental function is that influence sow is numerous Grow the key of performance and piglet health.Research without pig placenta organoid and report so far.
Summary of the invention
The object of the present invention is to provide the method for building up of a boar source 3D placental organ model, mainly 3D pig tire Disk trophoderm organoid condition of culture.
The technical scheme of the present invention is realized as follows:
The method for building up of one boar source 3D placental organ model, which is characterized in that its step are as follows:
(1) the isotonic 30% and isotonic 60%Percoll of two parts of 3ml is respectively configured, and the two is descending by concentration It is successively slowly added into the sterile centrifugation tube of 15ml, while lymphocyte separation medium 5ml being taken to be added to the 15ml sterile centrifugation In pipe.
(2) using sterile antibiotic physiological saline repeated flushing 8~10 times, then pig placenta is placed on superclean bench Pig placental villi is cut using ophthalmology scissors and shreds into multistage.
(3) villus after shredding is immersed in 35~40 DEG C of incubator, includes that trypsase and DNA enzymatic are mixed in incubator Liquid is closed, digestion time is 30~40min;
(4) it to DMEM/F12 culture solution termination digestion of the addition containing 10%FBS in cell suspension is obtained after digesting, blows and beats At cell suspension;It after cell suspension is filtered by 100 mesh copper mesh, is transferred in centrifuge tube, 1000~1500r/min, centrifugation 3 ~10min;
(5) supernatant is abandoned after being centrifuged, adds DMEM/F12 culture solution that cell is resuspended, cell suspension is respectively added slowly to Percoll separating liquid and lymphocyte separation medium upper layer, continue to be centrifuged, 1500~2000r/min, are centrifuged 25~35min;
(6) the canescence cloud cellular layer and lymphocyte of two concentration liquid level intersections of Percoll separating liquid are drawn Cellular layer between separating liquid and culture solution is washed twice, 1000~1500rpm with antibiotic salt water and culture solution, and centrifugation 5~ 10min;
(7) into the cell suspension after washed, DMEM/F12 culture medium of the addition containing 20%FBS is resuspended, and adjustment cell is dense Degree is inoculated in is coated with Collagen type-I (5-10U/cm2) and the 6 hole cell culture without collagen processing respectively to 1.0 × 106/ml In plate, 2~3h is cultivated in 37 DEG C, 5%CO2 cell incubator.
In the method for building up of this boar source 3D placental organ model of the invention, the mixed liquor in step (3) is by containing Example 1:1 is formed by volume for trypsin solution aqueous solution and aqueous solution containing DNA enzymatic, wherein aqueous solution containing trypsin solution The concentration of middle trypsase is 0.25%, and the content of DNA enzymatic is 100U/ml in the aqueous solution containing DNA enzymatic.
The method for building up for implementing this boar source 3D placental organ model of the invention, has the advantages that
(1) cell line model and primary cell model single cell type, immortalization or cancerization feature, primary thin are overcome Born of the same parents can not long-term cultivation and passage the shortcomings that, can permanently be passed on, be frozen with technical measure culture 3D pig source placenta organoid Deposit, present invention firstly provides 3D pig placenta organoid will to basic research and it is applied research have important value.
(2) (syncytionboph-oblast and cytotrophoblast are thin for the nearly all functioning cell of placenta cells in occlusion body Born of the same parents), the distinctive polypeptide of placenta and hormone can be secreted, hence it is evident that be better than existing 2D cell line and primary cell model.And the 3D Organoid model cultivating system is by debugging, optimization, it is ensured that placenta organoid long-term cultivation stablizes passage, and can be used as and grind Study carefully the model of pig placental function.
(3) the 3D pig placental organ culture system is derived from placenta stem-cell, and stem cell is divided into different placenta function Energy cell includes plasmoditropho blast and cytotrophoblast, therefore is totally different from 2D cell model.
(4) 3D pig placental organ growth maintains 3D structure in Matrigel, therefore is closer to intracorporal feelings Condition, 3D pig placenta organoid include plasmoditropho blast and cytotrophoblast, very close internal placenta structure.
(5) 3D pig placental organ culture system provided by the invention includes placenta stem-cell separation scheme and culture medium is Completely new approach and formula.
Specific embodiment
According to summary of the invention, 3D pig placenta organoid is successfully turned out, it is seen that pig placenta organoid has apparent conjunction born of the same parents Body trophoderm and cytotrophoblast functional areas.Specific implementation step are as follows: (1) separate placenta stem-cell, be wrapped in matrigel, add Enter organoid growth factor, is put into cell incubator and cultivates;(2) it periodically takes pictures under an optical microscope;(3) copolymerization is burnt carries out Immunofluorescence observes placenta organoid difference cell type.
The required 3D placental organ culture based component table of the present invention
Embodiment 1
The method for building up of one boar source 3D placental organ model, its step are as follows:
(1) the isotonic 30% and isotonic 60%Percoll of two parts of 3ml is respectively configured, and the two is descending by concentration It is successively slowly added into the sterile centrifugation tube of 15ml, while lymphocyte separation medium 5ml being taken to be added to the 15ml sterile centrifugation In pipe.
(2) pig placenta is placed on superclean bench using sterile antibiotic physiological saline repeated flushing 8 times, is then used Ophthalmology scissors cut pig placental villi and shred into multistage.
(3) villus after shredding is immersed in 35 DEG C of incubator, includes trypsase and DNA enzymatic mixing in incubator Liquid, digestion time 30min;
(4) it to DMEM/F12 culture solution termination digestion of the addition containing 10%FBS in cell suspension is obtained after digesting, blows and beats It is transferred in centrifuge tube, 1000r/min after filtering cell suspension by 100 mesh copper mesh at cell suspension, is centrifuged 5min.
(5) supernatant is abandoned after being centrifuged, adds DMEM/F12 culture solution that cell is resuspended, cell suspension is respectively added slowly to Percoll separating liquid and lymphocyte separation medium upper layer, continue to be centrifuged, 1500r/min, are centrifuged 25min.
(6) the canescence cloud cellular layer and lymphocyte of two concentration liquid level intersections of Percoll separating liquid are drawn Cellular layer between separating liquid and culture solution is washed twice, 1000rpm with antibiotic salt water and culture solution, is centrifuged 5min.
(7) into the cell suspension after washed, DMEM/F12 culture medium of the addition containing 20%FBS is resuspended, and adjustment cell is dense Degree is inoculated in is coated with Collagen type-I (5-10U/cm2) and the 6 hole cell culture without collagen processing respectively to 1.0 × 106/ml In plate, 2h is cultivated in 37 DEG C, 5%CO2 cell incubator.
Embodiment 2
The method for building up of one boar source 3D placental organ model, its step are as follows:
(1) the isotonic 30% and isotonic 60%Percoll of two parts of 3ml is respectively configured, and the two is descending by concentration It is successively slowly added into the sterile centrifugation tube of 15ml, while lymphocyte separation medium 5ml being taken to be added to the 15ml sterile centrifugation In pipe.
(2) pig placenta is placed on superclean bench using sterile antibiotic physiological saline repeated flushing 10 times, is then made Pig placental villi is cut with ophthalmology scissors and shreds into multistage.
(3) villus after shredding is immersed in 40 DEG C of incubator, includes trypsase and DNA enzymatic mixing in incubator Liquid, digestion time 40min;
(4) it to DMEM/F12 culture solution termination digestion of the addition containing 10%FBS in cell suspension is obtained after digesting, blows and beats It is transferred in centrifuge tube, 1500r/min after filtering cell suspension by 100 mesh copper mesh at cell suspension, is centrifuged 10min.
(5) supernatant is abandoned after being centrifuged, adds DMEM/F12 culture solution that cell is resuspended, cell suspension is respectively added slowly to Percoll separating liquid and lymphocyte separation medium upper layer, continue to be centrifuged, 2000r/min, are centrifuged 35min.
(6) the canescence cloud cellular layer and lymphocyte of two concentration liquid level intersections of Percoll separating liquid are drawn Cellular layer between separating liquid and culture solution is washed twice, 1000rpm with antibiotic salt water and culture solution, is centrifuged 5min.
(7) into the cell suspension after washed, DMEM/F12 culture medium of the addition containing 20%FBS is resuspended, and adjustment cell is dense Degree is inoculated in is coated with Collagen type-I (5-10U/cm2) and the 6 hole cell culture without collagen processing respectively to 1.0 × 106/ml In plate, 3h is cultivated in 37 DEG C, 5%CO2 cell incubator.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, made any modification, equivalent replacement and improvement etc. be should all be included in the protection scope of the present invention.

Claims (4)

1. the method for building up of a boar source 3D placental organ model, which is characterized in that its step are as follows:
(1) the isotonic 30% and isotonic 60%Percoll of two parts of 3ml is respectively configured, and the two is descending successively by concentration It is slowly added into the sterile centrifugation tube of 15ml, while lymphocyte separation medium 5ml being taken to be added in the 15ml sterile centrifugation tube;
(2) using sterile antibiotic physiological saline repeated flushing 8~10 times, then pig placenta tissue is placed on superclean bench Pig placental villi is cut using ophthalmology scissors and shreds into multistage;
(3) villus after shredding is immersed in 35~40 DEG C of incubator, includes trypsase and DNA enzymatic mixing in incubator Liquid, digestion time are 30~40min;
(4) it to DMEM/F12 culture solution termination digestion of the addition containing 10%FBS in cell suspension is obtained after digesting, blows and beats at thin Born of the same parents' suspension;After cell suspension is filtered by 100 mesh copper mesh, it is transferred in centrifuge tube, 1000~1500r/min, centrifugation 3~ 10min;
(5) supernatant is abandoned after being centrifuged, adds DMEM/F12 culture solution that cell is resuspended, cell suspension is respectively added slowly to Percoll points Chaotropic and lymphocyte separation medium upper layer, 1500~2000r/min are centrifuged 25~35min;
(6) the canescence cloud cellular layer and separation of lymphocytes of two concentration liquid level intersections of Percoll separating liquid are drawn Cellular layer between liquid and culture solution is washed twice, 1000~1500rpm with antibiotic salt water and culture solution, and centrifugation 5~ 10min;
(7) into the cell suspension after washed, DMEM/F12 culture medium of the addition containing 20%FBS is resuspended, and adjustment cell concentration is extremely 1.0 × 106/ml is inoculated in is coated in Collagen type-I (5-10U/cm2) and 6 porocyte culture plates handled without collagen respectively, 2~3h is cultivated in 37 DEG C, 5%CO2 cell incubator.
2. method for building up according to claim 1, which is characterized in that be pig Placenta samples in step (2).
3. method for building up according to claim 1, which is characterized in that the mixed liquor in step (3) is by molten containing trypsase Example 1:1 is formed by volume for liquid aqueous solution and aqueous solution containing DNA enzymatic, wherein trypsase in aqueous solution containing trypsin solution Concentration be 0.25%, the content of DNA enzymatic is 100U/ml in the aqueous solution containing DNA enzymatic.
4. method for building up according to claim 1, which is characterized in that the 3D pig placenta organoid provided in step (1-7) Cultivating system includes placenta stem-cell separation scheme and culture medium prescription.
CN201910484492.9A 2019-06-05 2019-06-05 The method for building up of one boar source 3D placental organ model Pending CN110129256A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110669124A (en) * 2019-10-17 2020-01-10 同济大学 New application of gene TBX3
CN111534489A (en) * 2020-04-29 2020-08-14 清华大学 T lymphocyte amplification method based on 3D printing
CN112538457A (en) * 2020-12-23 2021-03-23 中国科学院亚热带农业生态研究所 Pig liver and spleen duct stem cell separation and three-dimensional organoid culture method
CN112608885A (en) * 2020-12-23 2021-04-06 中国科学院亚热带农业生态研究所 Porcine fundus stomach gland stem cell separation and three-dimensional organoid culture method

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CN107236704A (en) * 2017-06-15 2017-10-10 博雅干细胞科技有限公司 From the method for placenta separating mesenchymal stem cell and the digestive enzyme compositions used

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CN107236704A (en) * 2017-06-15 2017-10-10 博雅干细胞科技有限公司 From the method for placenta separating mesenchymal stem cell and the digestive enzyme compositions used

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110669124A (en) * 2019-10-17 2020-01-10 同济大学 New application of gene TBX3
CN111534489A (en) * 2020-04-29 2020-08-14 清华大学 T lymphocyte amplification method based on 3D printing
CN112538457A (en) * 2020-12-23 2021-03-23 中国科学院亚热带农业生态研究所 Pig liver and spleen duct stem cell separation and three-dimensional organoid culture method
CN112608885A (en) * 2020-12-23 2021-04-06 中国科学院亚热带农业生态研究所 Porcine fundus stomach gland stem cell separation and three-dimensional organoid culture method

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Application publication date: 20190816