Background technology
The research of bone tissue engineer provides a new hope for treatment large segmental bone defect.Bone tissue engineer is by dry thin
Born of the same parents, trophic factors and the key element of timbering material 3 composition.Treatment of the good stem cell and trophic factors to Cranial defect is most important,
Therefore, propagation and the strong stem cell of differentiation capability are found, possesses the trophic factors for inducing strongly and promoting to breed and breaking up, reaches
It is that field of orthopaedics deepens continuously the focus of research to optimal bone defect healing effect.
Trophic factors can promote mescenchymal stem cell skeletonization, be a composition portion essential in bone tissue engineer
Point.Due to simple Derived from Mesenchymal Stem Cells skeletonization, bone amount is less, therefore the effect of trophic factors just seems more important.
Atractylenolide is a kind of compound in the bighead atractylodes rhizome, is main in the bighead atractylodes rhizome with atractylenolide Ⅰ and atractylodes lactone III
Ginkgolide Component.Its chemical structural formula is as follows, and atractylodes lactone III is the oxidation product of atractylenolide Ⅰ in source of students, and atractylenolide is
The dehydration product of atractylodes lactone III.Generally, it is considered that atractylenolide Ⅰ and the main active that atractylodes lactone III is the bighead atractylodes rhizome, are them
Anti-inflammatory and anticancer effective component (bibliography:Atractylodes lactone constituents and its Advance on Pharmacological Activities, China Dispensary 2012
The 39th phase of volume 23).
It is found by the applicant that atractylenolide have it is many it is special, different from the activity of atractylenolide Ⅰ and atractylodes lactone III, than
As atractylenolide can promote mesenchymal stem cells MSCs Osteoblast Differentiation.At present, there has been no the open atractylenolide of research
These activity.
The content of the invention
It is an object of the invention to provide a kind of mescenchymal stem cell Proliferation, Differentiation using atractylenolide as trophic factors
Nutrient solution.
Realize that above-mentioned purpose technical scheme of the present invention is as follows:
A kind of mescenchymal stem cell Proliferation, Differentiation nutrient solution using atractylenolide as trophic factors, cultivated with DMEM/F12
Nutrient solution based on based sols, the atractylenolide containing valid density in the basic culture solution.
Preferably, the mescenchymal stem cell is mesenchymal stem cells MSCs.
Preferably, the differentiation refers to Osteoblast Differentiation.
Preferably, the concentration of the atractylenolide is 5-60 μM.
Application of the atractylenolide in the reagent for preparing inducing mesenchymal stem cell Osteoblast Differentiation.
Preferably, the mescenchymal stem cell is mesenchymal stem cells MSCs.
The outstanding advantages of the present invention:
It is a discovery of the invention that atractylenolide can promote the propagation and Osteoblast Differentiation of mesenchymal stem cells MSCs, Ke Yiyong
In the nutrient solution for being prepared into inducing bone mesenchymal stem cell Osteoblast Differentiation, with effectively improve mesenchymal stem cells differentiation into
Bone bone amount.
Embodiment
Just in conjunction with the embodiments specific below to introduce essentiality content of the invention, due to length reason, experimentation is retouched
Stating can not accomplish very in detail, and the part not being described in detail in every experiment is conventional behaviour well known to those skilled in the art
Make.
First, experiment material
Atractylenolide, atractylenolide Ⅰ and atractylodes lactone III are made by oneself, and purity is more than 98%.
DMEM/F12(1:1) culture medium is purchased from Hyclone companies as serum-free medium.
2nd, experimental method
1st, the separation and culture of mesenchymal stem cells MSCs (BMSCs)
Raw 14d healthy SD rat is taken out, is put to death using cervical dislocation and is soaked in 10min in 75% alcohol, sterile bar
Bilateral femur, shin bone and humerus are taken under part, is placed in the nutrient solution of serum-free, bilateral metaphysis is cut, exposes ossis,
2.5mL culture mediums are drawn with syringe and rinse ossis repeatedly, are collected flushing liquor and are placed in centrifuge tube, centrifuge 1200r/min,
5min, supernatant is abandoned, cell is resuspended with the complete culture solution containing 10% hyclone, in 5%CO2, cultivate in 37 DEG C of incubators,
Liquid is changed after 24h, removes non-attached cell, liquid is changed once per 2-3d, when cell attachment grows 80%-90%, 0.25% pancreatin disappears
Change and pass on, liquid is changed once every 2d, with propagating method to cell purification, cellular morphology is observed under inverted microscope.
2nd, influence of the atractylodes lactone to Proliferation of Bone Mesenchymal Stem Cells
Third generation BMSCs is taken with 1 × 103The concentration in/hole is inoculated in 96 orifice plates, be separately added into 40 μM atractylenolide,
Atractylenolide Ⅰ and atractylodes lactone III (also set up control group, control group does not add atractylenolide, atractylenolide Ⅰ or atractylodes lactone
III), 3 multiple holes of every group of setting, culture is terminated when cultivating 5d, 100 μ L serum-free mediums and 10 μ L CCK-8 are added in every hole
Liquid is detected, is placed in incubator after 2h, uses measure OD values under ELIASA 450nm wavelength.
3rd, calcium scoring dyes
Take the 3rd generation cell, in inoculated and cultured ware, 2.5 × 105/ ware.20 μM are separately added into after cell conforms to 80%
Atractylenolide, atractylenolide Ⅰ and atractylodes lactone III, cultivated eventually after inducing 21d, PBS is rinsed 3 times, 95% alcohol fixation 15min
Afterwards, 0.1% Alizarin red staining, 37 DEG C of incubation 1h, distilled water rinse 3 times.Observe and take a picture, count calcified area percentage
(%).
4th, statistical procedures
Statistical analysis is carried out with the statistical softwares of SPSS 19.0, data are represented using mean ± standard deviation, are compared between group and are adopted
With one-way analysis of variance, P < 0.05 represent that difference is statistically significant.
3rd, experimental result
1st, BMSCs cultures and identification
Visible a small amount of star, spindle cell adherent growth after rat primary cell culture 24h, visible cell is in radiation after 4d
Shape arranges, in fusiformis.Visible cell grows arrangement closely in the form of sheets after culture 7d, is grown in swirling, and BMSCs cultures are normal.
2nd, influence of the atractylodes lactone to Proliferation of Bone Mesenchymal Stem Cells
After atractylenolide, atractylenolide Ⅰ and atractylodes lactone III cultivate 5d respectively, BMSCs is detected using CCK-8 kits
Cell quantity.As a result show:Atractylenolide and atractylenolide Ⅰ can promote BMSCs propagation, and OD values are significantly higher than control
Group, difference have statistical significance (P < 0.05);Atractylodes lactone III has slight inhibitory action to BMSCs propagation.
Each group OD values are as shown in table 1 and Fig. 1.
The CCK8 methods of table 1 detect influence of the atractylodes lactone to Proliferation of Bone Mesenchymal Stem Cells
|
Control group |
Atractylenolide group |
Atractylenolide Ⅰ group |
III group of atractylodes lactone |
OD values (450nm) |
0.83±0.08 |
1.39±0.12 |
1.17±0.11 |
0.75±0.09 |
3rd, calcium scoring coloration result
Calcification phenomenon occurs in known Gegenbaur's cell, can dye red by alizarin red agent, the cell of non-calcification will not be colored.
As it is clear from fig. 2 that control group, atractylenolide Ⅰ group, III group of atractylodes lactone are without obvious calcium scoring phenomenon (calcified area hundred
Point than < 5%), and atractylenolide group can be observed the calcium scoring of large area, and calcified area percentage is up to more than 70%.
Above-described embodiment proves that atractylenolide can promote the propagation and Osteoblast Differentiation of mesenchymal stem cells MSCs, can
For being prepared into the nutrient solution of inducing bone mesenchymal stem cell Osteoblast Differentiation, to effectively improve mesenchymal stem cells MSCs point
It is melted into bone bone amount.
Above-described embodiment is the embodiment to essentiality content of the present invention, for preferably explaining the present invention, but this area skill
Art personnel are it is to be understood that protection scope of the present invention should not be confined to above-mentioned specific embodiment.