CN108048402A - A kind of people's Pancytopenia glucocorticoid drug-resistant cell strain and its construction method and application - Google Patents
A kind of people's Pancytopenia glucocorticoid drug-resistant cell strain and its construction method and application Download PDFInfo
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Abstract
The present invention provides a kind of people's Pancytopenia glucocorticoid drug-resistant cell strain CEM C7/HDR and its construction method and application, and deposit number is CCTCC NO:C2017233, the cell line is induction object with Pancytopenia glucocorticoid sensitive cells strain CEM C7 14, simulate Pancytopenia cell living environment in marrow, it obtains stablizing glucocorticoid drug resistant cell line CEM C7/HDR using 0.25 μM of dexamethasone, 1 Fiber differentiation, the half-inhibition concentration to dexamethasone is 1500 times of parental cell or more.The present invention provides new cell model to recur the research of refractory people's acute lymphoblastic leukemia and biological medicine research and development, has larger practical value in the application for exploring the drug resistant pathogenesis of people's Pancytopenia glucocorticoid, the refractory mechanism of recurrence and reversing drug resistance medicament research and development.
Description
Technical field
The invention belongs to field of biomedicine technology, more particularly to a kind of people's Pancytopenia sugar cortical hormone
Plain drug-resistant cell strain and its construction method and application.
Background technology
Acute lymphoblastic leukemia(acute lymphoblastic leukemia, ALL)The childhood of being, is most common
Malignant tumour, although nearly 50 years, the prognosis of children ALL achieved rapid progress, and 5 years survival rates are carried from the 10% of 1960s
Height to 90%, but still have 10~20% patient it is refractory, recurrence, poor prognosis.Due to the high incidence of ALL children below 15 years old,
It is still the major reason for causing pediatric tumor death.Pancytopenia(T-ALL)It is one group and comes from T systems
The malignant clone disease of lymphoid precursor cell or lymphoblast accounts for the 10~15% of children ALL, and adult T-ALL ratios are high
In children, generally 20~25%, prognosis is significantly worse than B-ALL.T-ALL patient more than 70% belongs to high-risk ALL, is easy to early stage
Recurrence, 5 years survival rates are 40~70%.
Glucocorticoid(Glucocorticoid, GC)Drug resistance is ALL recurrences, refractory one of the major reasons.GC can be special
Different in nature inducing malignant lymphopoiesis is stagnated and inspires apoptosis, is always treatment ALL and other lymph source property malignant tumours
One of choice drug, nearly all ALL Combination chemotherapies include GC.At present in chemotherapy regimen common GC be prednisone and
Dexamethasone.GC sensibility is that children's ALL clinical risks degree is grouped, one of important indicator of guiding treatment and judging prognosis, GC
Drug resistance is clinical treatment problem urgently to be resolved hurrily.Therefore, T-ALL GC mdr cell models are established, it will help illustrate GC drug resistances
Molecule mechanism, find early stage accurate early warning GC resistant organism markers, improve leukemia risk degree parting, specify reversing drug resistance
Therapy target, establish the chemotherapy regimen of personalized high-efficiency low-toxicity;The difficult point of recurrence ALL treatments refractory at present is advantageously accounted for,
Children and adults ALL or even other lymph source property tumor cure rates are further improved, improve patient's long term survival quality, it is great
Clinical value.
Drug screening method is the common method for establishing tumor drug resistance cell line, and particular technique is divided into two kinds, first, progressively increasing
Add drug concentration, successive induction method, second is that heavy dose of impact intermittent administration method or two methods combine practicality.By above-mentioned
Method has been set up the drug-resistant cell strain of kinds of tumors both at home and abroad at present, but longer the time required to obtaining drug-resistant cell strain,
It needs to carry out screening pressurization to cell with drug more than June, and in experimentation, to maintain resistant characterization.CEM-C7-14 is T-
ALL cell lines come from 1964 from 3 years old CCRF-CEM cell line that foundation is separated in girl's white man peripheral blood, 1977
Professor Thompson therefrom selects monoclonal, obtains the CEM-C7-14 cells to GC sensitivities, CEM-C7-14 cells are to GC height
Sensitivity, 48 it is small when to the half-inhibition concentration of dexamethasone at 0.037 ± 0.003 μM, conventional medicament screening method be difficult
GC drug-resistant cell strains are successfully built on the basis of CEM-C7-14 cell lines.
The content of the invention
The present invention provides a kind of people's Pancytopenia glucocorticoid drug-resistant cell strain, Cell Names
It is people Pancytopenia cell line CEM-C7/HDR, deposit number is:CCTCC NO:C2017233, preservation day
Phase:On October 25th, 2017, depositary institution:China typical culture collection center.
The present invention also provides people's Pancytopenia glucocorticoid drug-resistant cell strain CEM-C7/HDR
Construction method:Its process is, first by people's Pancytopenia cell line CEM-C7-14 of exponential phase by 1~
3×104A/ml inoculations, it is 1~3 × 10 to be placed in culture to cell density under low-oxygen environment5A/ml(About 4 days time)Afterwards once
Property 0.25 μM of dexamethasone of addition, then proceed to culture to cell density be 2~10 × 105A/ml(About 4 weeks time), so
It is placed under normoxic condition and expands culture, so as to obtain people's Pancytopenia glucocorticoid drug-resistant cell strain
CEM-C7/HDR。
In the above method, the hypoxia condition is that simulation Pancytopenia cell is survived micro-loop in marrow
Border, the normoxic condition can simulate the growing environment that Pancytopenia cell is released into peripheral blood from marrow.
Specific step is as follows:
(1)By people's Pancytopenia cell line CEM-C7-14 cellar cultures in the RPMI containing 10% hyclone
In 1640 complete mediums, 37 DEG C, 5%CO are placed in2, saturated humidity, 21%O2Normal oxygen incubator culture;
(2)Take step(1)It is middle to cultivate to the CEM-C7-14 cells of exponential phase, by 1~3 × 104A/ml is inoculated with into 6 holes
Plate is placed in simulation Pancytopenia cell and survives in marrow microenvironment(37℃、5%CO2, saturated humidity, 1%O2)
Hypoxemia incubator culture 4 days after, add in 0.25 μM of dexamethasone, continue culture 4 weeks, it is spare;
(3)By step(2)The cell that culture obtains is placed in simulation Pancytopenia cell and is released into periphery from marrow
The growing environment of blood(37℃、5% CO2, saturated humidity, 21%O2)Lower culture, when cell Proliferation to 1 × 106A/ml, it is conventional to pass
In generation, changes liquid, obtains people's Pancytopenia glucocorticoid drug-resistant cell strain CEM-C7/HDR.
People's Pancytopenia glucocorticoid drug-resistant cell strain CEM-C7/HDR that the present invention is obtained has
Following biological characteristics:
CEM-C7/HDR cells are as parental cell, the suspension growth in 1640 complete mediums of RPMI, based on circle,
With pleomorphism, in vitro culture well-grown, by 2 × 105A/ml density inoculation, passage in 2~3 days are once, continuous in vitro
Culture was more than 8 months, and more than 90 generations, population doublings were more than 280 generations, stablized multiplication, in good condition, Resistance index is more than for passage
1500.Character is constant after liquid nitrogen or Cryopreservation, recovery, keeps good resistant characterization.
The totally 5 weeks time of cell drug-resistant cell strain from handling to obtaining, cell height drug resistance, drug sensitivity test confirm
CEM-C7/HDR cells are more than 1500 to the Resistance index of dexamethasone.For population doublings at 10 generation, cell fills in rice over the ground
The Resistance index of pine reaches more than 3000, slightly falls after rise afterwards, and to after 100 generations, Resistance index stabilization is 1500 ~ 2500, no
Drug screening need to be used again, and resistant characterization is stablized.
The growth curve of CEM-C7/HDR cells is drawn using MTT and Trypan Blue cell counting, calculates cell times
When the increasing time is 18~20 small, multiplication rate is stablized, it is seen that split coil method.
The CEM-C7/HDR cell cycles are detected using PI decoration methods, it is seen that CEM-C7/HDR cells and its parental cell CEM-
Each phase distribution of C7-14 cells is basically identical.
Being tested using methylcellulose Semi-solid cell culture confirms that CEM-C7/HDR cell lines have high semisolid Clone formation
Ability.
Transcript profile sequencing finds that CEM-C7/HDR cells have 388 gene expression up-regulations, 269 bases compared to parental cell
Because expression is lowered.
CEM-C7/HDR cell inoculation NOD/SCID mouse have high oncogenicity, and tumor cells and the CEM- of in vitro culture
C7/HDR cell deriveds are consistent..
It is same that STR detections and Immunophenotyping, which analyze confirmation CEM-C7/HDR cells with parental cell CEM-C7-14,
Source.CEM-C7/HDR cells and CEM-C7-14 cell STR testing results are as shown in table 1 below, as seen from the results in Table 1, CEM-
C7/HDR is consistent with CEM-C7-14 cell deriveds.
Table 1:CEM-C7/HDR cells and CEM-C7-14 cell STR testing results
People's Pancytopenia cell line CEM-C7/HDR that the present invention is built has to be applied below:
(1)People Pancytopenia cell line CEM-C7/HDR is establishing the acute T Lymphocyte Glycogen Determinations cortical hormone of humanization
Application in plain leukaemia animal model, cell line CEM-C7/HDR has high oncogenicity, by CEM-C7/HDR cell inoculations
NOD/SCID mouse subcutaneously can touch lump in 10 days, and lump mushrooms out after 15 days, tumorigenesis rate 100%, and tumor cells
It is consistent with the CEM-C7/HDR cell deriveds of in vitro culture.
(2)People Pancytopenia cell line CEM-C7/HDR is resistance in screening or assessment treatment glucocorticoid
Medicine Pancytopenia drug and application in glucocorticoid medicine is reversed, by CEM-C7/HDR cells
Different chemotherapeutics, the changes such as observation growth and proliferation of cell, death, cycle are added in culture medium, and can clear and definite drug reverse
GC drug resistances obtain preliminary effective drug candidate, then drug candidate are used for above-mentioned Pancytopenia animal mould
Type detects the internal effect of drug, after ordinary circumstance, time-to-live, tumor size change and the drug effect of observing animal
In body situations such as apoptosis, necrosis and the change of other associated signal paths, so as to carry out curative effect evaluation and machine to drug candidate
System analysis.
(3)People Pancytopenia cell line CEM-C7/HDR is in the research acute T lymphs of glucocorticoid drug resistance
Application in chronic myeloid leukemia mechanism, cytomorphology, Biological characteristics, using light microscopic, electron microscopic observation cellular morphology knot
Structure and ultra microstructure compare the difference of CEM-C7/HDR and its parental cell CEM-C7-14 forms and Biological characteristics, using egg
The method of Bai Zuxue, full-length genome and metabolism group analyze CEM-C7/HDR and CEM-C7-14 cells, it is intended to seek
The discrepant Disease-causing gene of tool, albumen or metabolite are looked for, so as to the drug resistant pathogenesis of further investigated glucocorticoid.
(4)People Pancytopenia cell line CEM-C7/HDR is immunized establishing acute lymphoblastic leukemia
Learn and hematopoieticmicroenviron-ment research platform in application, NK cells, CAR-T or other immune antiboidies, ligand etc. are applied to
It is thin to sugared cortex drug-resistant leukemia to inquire into immunization therapy for CEM-C7/HDR and CEM-C7-14 cells and its humanized animal's model
Intracellular growth, immunity of organism and leukaemia development and the influence lapsed to;The dimensional culture environment of simulation marrow hemopoiesis tabernacle is established, is compared
The influence that different pharmaceutical including immunotherapy is treated and lapsed to glucocorticoid drug resistance acute lymphoblastic leukemia.
The invention has the advantages that:
1st, people's Pancytopenia cell line CEM-C7/HDR of the invention is white to recur refractory people's acute lymphoblastic
The research of blood disease and biological medicine research and development provide new cell model, are exploring people's Pancytopenia sugar cortical hormone
To hold out broad prospects in the application of the drug resistant pathogenesis of element, the refractory mechanism of recurrence and reversing drug resistance medicament research and development with it is larger
Practical value.
2nd, existing drug screening method structure drug-resistant cell strain is, it is necessary to be stepped up drug concentration, carry out successive induction or
Heavy dose impact intermittent administration or two methods combine, the above method is more difficult to the extremely sensitive cell of drug filter out it is resistance to
Medicine strain, and the more time is needed to carry out drug domestication to cell.People's Pancytopenia cell line CEM- of the present invention
The construction method of C7/HDR is impacted after using hypoxia condition culture with dexamethasone is heavy dose of, simulates clinical leukemia cell drug-resistance
Forming process, experimentation is simple, and modeling conditional stability can obtain drug-resistant cell strain, without using drug again in a short time
Screening pressurization is carried out to cell, modeling cost can be significantly reduced;Meanwhile this method can to the extremely sensitive cell modeling of drug,
Because under hypoxia condition, malignant cell to Treated with Chemotherapeutic Drugs object compared with normoxic condition when be more resistant to, the method can be used extensively
In various malignant cells, obtain to the drug resistance of different pharmaceutical or multi-medicament is screened simultaneously, obtain multidrug resistance
Cell line.
3rd, Resistance index is commonly used in the judgement of drug resistance of tumor cell degree(resistant index, RI)It represents, RI is
Mdr cell half-inhibition concentration(50% inhibitory concentration, IC50) with the ratio of parental cell IC50.
Drug resistance is divided into minuent by Snow etc. by the height of Resistance index(<5), moderate(5-15), height(> 15).The present invention is established
Drug-resistant cell strain CEM-C7/HDR its RI be 1500~2500, i.e., be to the IC50 of dexamethasone parental cell 1500~
2500 times.
Description of the drawings
Fig. 1 is CEM-C7/HDR and CEM-C7-14 cell observation figures under inverted phase contrast microscope(×400);
Fig. 2 is the wooden Sa colored graph of CEM-C7/HDR and CEM-C7-14 cells Switzerland-Ji under ordinary optical microscope(×1000);
Fig. 3 is half-inhibition concentration when dexamethasone is small to CEM-C7/HDR cytosiies 48(IC50)And its Resistance index
(RI), wherein, A:Half-inhibition concentration when dexamethasone is small to CEM-C7/HDR cytosiies 48(IC50);B:CEM-C7/
HDR is to the Resistance index of dexamethasone;PDL:Cell population doublings number(population doubling level);
Fig. 4 is CEM-C7/HDR and CEM-C7-14 cell growth curves;
Fig. 5 schemes for flow cytometer detection CEM-C7/HDR and the CEM-C7-14 cell cycle, wherein, A:CEM-C7-14;B:CEM-C7/
HDR;
Fig. 6 is transcription group sequencing detection CEM-C7/HDR and CEM-C7-14 cellular gene expression differences, and wherein X-axis represents A
It is worth (the transformed Average expression levels of log2), Y-axis represents M values (the transformed fold differences of log2);
Fig. 7 CEM-C7/HDR cell NOD/SCID mouse subcutaneous tumor forms lab diagram.
People Pancytopenia cell line CEM-C7/HDR, deposit number are:CCTCC NO:C2017233 is protected
Hide the date:On October 25th, 2017, depositary institution:China typical culture collection center preserves unit address:Hubei Province is military
No. 299 Wuhan Universitys of Han Shi Wuchang Districts Bayi Road are in the school(The first attached primary school of Wuhan University opposite), Wuhan University's collection.
Specific embodiment
The present invention is in conjunction with specific embodiments described further invention, but the implementation of the present invention is not limited to that.
Method therefor is conventional method to following embodiments unless otherwise specified
Embodiment 1
The structure of people's Pancytopenia glucocorticoid drug-resistant cell strain CEM-C7/HDR of dexamethasone rapid induction
Construction method:
1. cell culture:Recovery people's Pancytopenia cell line CEM-C7-14 cells, are suspended in containing 10% tire ox
Serum(Thermo companies)1640 cell culture mediums of RPMI(Gibco companies)In, 37 DEG C, 5%CO2, saturated humidity, 21%O2
Normal oxygen incubator culture.
2. screening and culturing condition:The CEM-C7-14 cells of exponential phase in step 1 are taken, by 2 × 104A/ml inoculations
Enter 6 orifice plates, 2ml/ holes are respectively placed in 37 DEG C, 5%CO2, saturated humidity, 21%O2Normal oxygen incubator(Normal oxygen group)And 37 DEG C, 5%
CO2, saturated humidity, 1%O2Hypoxemia oxygen incubator(Hypoxia group)Culture, after 4 days, 0.25 μM of ground is added in normal oxygen and hypoxia group
Grouping culture using 3 holes of not dosing as control, is continued in Sai meter Song, each 3 hole.
On the addition of dexamethasone, the present embodiment be separately added into preliminary experiment 0.01 μM, 0.05 μM, 0.1 μM,
0.25 μM, 0.5 μM and 1 μM dexamethasone, it turns out that when less than 0.25 μM of concentration, cell can be effective in low-oxygen environment
Dexamethasone is resistant to, cell more difficult recovery multiplication capacity after heavy dose is impacted during more than 0.25 μM, therefore, the present invention uses
The dexamethasone of 0.25 μM of dosage.
3. build resistant models:After dosing 4 days, normal oxygen group complete cell death, hypoxia group after dexamethasone processing exist
Still there is survivaling cell after dexamethasone processing, continue hypoxemia culture, the normal oxygen culture of 4 weeks postpositions, when cell Proliferation to 1 × 106A/
Ml, routine passage change liquid, and half-inhibition concentration of the cell to dexamethasone is detected after 1 week, and calculate its Resistance index as 3200
± 29, this cell is named as CEM-C7/HDR.Monoclonal is chosen in methylcellulose culture, calculates cell doubling time, and detects
Cell cycle.
4. drug resistance tracks:By CEM-C7/HDR and its monoclonal cell, cellar culture, passage monthly weigh in normal oxygen
Half-inhibition concentration when reinspection survey cell is small to effects of dexamethasone 48, and Resistance index is calculated, the results show that in group times
After increasing 100 generation of number, CEM-C7/HDR and its monoclonal cell are to 60~70 μM of the half-inhibition concentration of dexamethasone, drug resistance
Exponential Stability is 1500~2500.
5. cell stablizes growth, does not influence its resistant characterization and biological characteristics through cryopreservation resuscitation repeatedly.
Embodiment 2
The growth of people's Pancytopenia glucocorticoid drug-resistant cell strain CEM-C7/HDR, biological characteristics and resistance to
Medicine CHARACTERISTICS IDENTIFICATION
(1)Morphological observation:Take the logarithm growth period CEM-C7/HDR cells and its parental cell CEM-C7-14 in fall
Micro- Microscopic observation living cells form is put, the results are shown in Figure 1, sees CEM-C7/HDR cells and its parental cell CEM-C7-14
Form is similar, equal suspension growth, based on circle, it is seen that pleomorphism cell, size are uneven.
Take the logarithm the CEM-C7/HDR cells in growth period and its parental cell CEM-C7-14, and routine smear is fixed, and Rui Shi-
Giemsa staining, in just putting micro- Microscopic observation, the results are shown in Figure 2, and CEM-C7/HDR cells and its parent CEM-C7-14 are thin
Born of the same parents' size, morphosis are similar.
(2)Mtt assay detects drug resistance of the cell to glucocorticoid:Be collected by centrifugation exponential phase CEM-C7/HDR and
CEM-C7-14 cells, it is 2 × 10 to adjust cell concentration respectively5A cell/ml, is inoculated in 96 orifice plates, per 100 μ l of hole, every group
3 multiple holes;The dexamethasone of increasing concen-trations is separately added into CEM-C7/HDR and CEM-C7-14 cells, wherein CEM-C7-14 is thin
Born of the same parents add in 0.0001~1 μM of dexamethasone, are incremented by by 10 times, and CEM-C7/HDR cells add in 0.1~1000 μM of dexamethasone,
It is incremented by by 10 times.Blank control and not dosing control group are set, when processing 48 is small, add in 10 μ l/ holes of 5mg/ml MTT, fully
Mixing, 37 DEG C be incubated 4 it is small when after add in the SDS of acidifying(10%SDS HCl containing 0.01M), 100 μ l/hole, mixing.37 DEG C incubate
It educates overnight, the absorbance of secondary daily multi-function microplate reader detection 570nm wavelength(OD).According to blank group, control group, fill in rice
The OD averages of pine group calculate the survival rate of cell.Cell survival rate=(OD dexamethasone average-OD blank averages)/(OD is compareed
Average-OD blank averages)×100%.Curve is drawn according to time, drug concentration, cell survival rate and calculates the suppression of dexamethasone half
Concentration processed.CEM-C7/HDR cells are CEM-C7/HDR cells half-inhibition concentration and parent to the Resistance index of glucocorticoid
The ratio of cell CEM-C7-14 half-inhibition concentrations.The results are shown in Figure 3, and CEM-C7/HDR cells are in population doublings 10
Dai Shi, cell are up to 128 μM to the half-inhibition concentration of dexamethasone, and Resistance index is up to 3200, to after 100 generations, cell
To the half-inhibition concentration stabilization of dexamethasone at 60~70 μM, Resistance index stabilization is 1500~2500.
(3)Growth curve and doubling time measure:The CEM-C7/HDR and CEM-C7-14 that exponential phase is collected by centrifugation are thin
Born of the same parents, adjustment cell concentration are 1 × 105A cell/ml, is inoculated in 6 orifice plates, puts 37 DEG C, 5%CO2、21%O27 are cultivated in incubator
My god, Trypan Blue living cell counting is used daily, and cell proliferative conditions are detected with mtt assay, with the accurate of clear and definite cell count
Property, cell suspension is added in 96 orifice plates, and per 100 μ l of hole, every group of 3 multiple holes set blank control, add in 5mg/ml MTT(Sigma
Company)10 μ l/ holes, abundant mixing, 37 DEG C be incubated 4 it is small when after add in the SDS of acidifying(10%SDS HCl containing 0.01M), 100 μ l
/ hole, mixing.37 DEG C of overnight incubations, secondary daily multi-function microplate reader survey the absorbance of 570nm wavelength(OD).Using the time as horizontal stroke
Coordinate, cell number are ordinate, draw cell growth curve, as shown in figure 4, CEM-C7/HDR cells and its parental cell CEM-
The growth of C7-14 cells is basically identical, when the doubling time is 18~20 small.
(4)PI decoration methods compare the cell cycle status of CEM-C7/HDR cells and its parental cell CEM-C7-14, as a result
As shown in figure 5, CEM-C7/HDR cells and each phase distribution of its parental cell CEM-C7-14 cells are basically identical.
(6)STR detections confirm CEM-C7/HDR cells and its parental cell CEM-C7-14 is same source.
(7)Flow cytometer detection cellular immunity parting confirms that CEM-C7/HDR cells and its parental cell CEM-C7-14 are same
Source expresses CD3, CD4, CD5 and CD7, does not express CD8, CD34 and HLA-DR.
(8)Transcript profile is sequenced, and the results are shown in Figure 6, finds CEM-C7/HDR cells compared to parental cell CEM-C7-14
There are 388 gene expression up-regulations, 269 down regulation of gene expression.
Embodiment 3
Establish the acute T lymphocytes glucocorticoid leukaemia animal model of humanization
NOD/SCID mouse are tested into knurl:CEM-C7/HDR cells in exponential phase are pressed 5 × 106/ 100 μ l/ only, connect
Kind is in female Balb/c (nu/nu) mouse(6 week old, 19~21g of weight)Apterium is subcutaneous;The next day observe inoculation position tumour
Generation situation.The results are shown in Figure 7, and inoculation can touch grain of rice size lump after 10 days in nude mice by subcutaneous, tumour after being inoculated with 15 days
It mushrooms out, every 3 days measurement Tumor sizes, it is seen that lump volume was from 762 mm of the 15th day3Grow into the 3527 of the 21st day
mm3.Take tumor mass that cell suspension is made after 15 days, immunophenotyping and STR detections confirm that tumor mass separation cell and CEM-C7/HDR are thin
Born of the same parents are same source.
Claims (10)
1. a kind of people's Pancytopenia glucocorticoid drug-resistant cell strain, Cell Name is that the acute T lymphs of people are thin
Born of the same parents leukemia cell line CEM-C7/HDR, deposit number CCTCCNO:C2017233.
2. the construction method of people's Pancytopenia cell line CEM-C7/HDR, feature described in a kind of claim 1
It is:It is 1 that people's Pancytopenia cell line CEM-C7-14 first is placed in culture to cell density under hypoxia condition
~3 × 105After a/ml, disposably add in 0.25 μM of dexamethasone, then proceed to hypoxemia culture to cell density for 2~10 ×
105A/ml is finally placed under normoxic condition and expands culture, resistance to so as to obtain people's Pancytopenia glucocorticoid
Medicine cell line CEM-C7/HDR.
3. the construction method of people's Pancytopenia cell line CEM-C7/HDR according to claim 2, special
Sign is:The hypoxia condition refers to that simulate Pancytopenia cell survives microenvironment in marrow, the normal oxygen
Condition refers to simulate the growing environment that Pancytopenia cell is released into peripheral blood from marrow.
4. the construction method of people's Pancytopenia cell line CEM-C7/HDR according to claim 2, special
Sign is:People's Pancytopenia cell line CEM-C7-14 is the CEM-C7-14 cells of exponential phase, is pressed
1~3 × 104A/ml inoculations are placed in hypoxia condition culture.
5. the construction method of people's Pancytopenia cell line CEM-C7/HDR according to claim 3, special
Sign is:Existence microenvironment of the simulation Pancytopenia cell in marrow refers to 37 DEG C, 5%CO2, saturation
Humidity, 1%O2Environment.
6. the construction method of people's Pancytopenia cell line CEM-C7/HDR according to claim 3, special
Sign is:It is described simulation Pancytopenia cell from marrow be released into peripheral blood growing environment refer to 37 DEG C, 5%
CO2, saturated humidity, 21%O2Environment.
7. people Pancytopenia cell line CEM-C7/HDR is establishing the acute T leaching of humanization glucocorticoid drug resistance
Application in bar chronic myeloid leukemia animal model.
8. people Pancytopenia cell line CEM-C7/HDR is acute in screening or assessment treatment glucocorticoid drug resistance
Application in T lymphocytic leukemia drugs.
9. people Pancytopenia cell line CEM-C7/HDR is in the research acute T lymphocytes of glucocorticoid drug resistance
Application in leukaemia mechanism, cytomorphology, Biological characteristics.
10. people Pancytopenia cell line CEM-C7/HDR establish acute lymphoblastic leukemia immunology and
Application in hematopoieticmicroenviron-ment research platform.
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