Embodiment
Below in conjunction with embodiment the present invention is elaborated, and can not limit the present invention.
Embodiment 1
The plasma membrane purifying: it is even broken that people's lung (gland cancer) is organized in Potter-Elvehjem Tissue Grinders, filtered through gauze, and remaining thick tissue adds HEPS liquid and in liquid nitrogen, grinds, and refilters, and centrifugal 10 minutes of merging filtrate 3200g goes deposition, and centrifugal 1 hour of 100000g gets and is precipitated as thick plasma membrane.Thick plasma membrane suspends with HEPS again, adds centrifugal 10 minutes of 6.4%Detran/PEG system mixing 750g again, gets the upper strata, and lower floor continues with centrifugal 10 minutes of new 6.4%Detran/PEG system mixing 750g.Merge the upper strata twice, at 1mM NaHCO
3In the solution 100000 centrifugal 1 hour, collecting precipitation carried out plasma membrane purity with Electronic Speculum and Westerb blot respectively and identifies.Fig. 1-A is the pollution that the plasma membrane of transmission electron microscope collection of illustrative plates demonstration this method extraction behind the plasma membrane purifying is not found other organelles such as particulate body; Plasma membrane marker protein Na behind Fig. 1-B and Fig. 1-C explanation plasma membrane purifying
+/ K
+The full lysis liquid enrichment of the expression ratio of ATPase 12 times, and the full cell pyrolysis liquid of expression ratio of the marker protein Prohibitin of particulate body has reduced 10 times.The method that this purifying people lung (gland cancer) tissue plasma membrane is described thus is effective, and the plasma membrane purity of purifying is higher.
Embodiment 2
ITRQA mark and mass spectrophotometry: this method has been carried out twice different iTRQA mark and mass spectrophotometry to two groups of samples.Mark for the first time; Behind the plasmalemma protein matter accurate quantification; Equal protein matter is used the other normal lung tissue of 114 and 116 reagent mark cancers plasma membrane peptide hydrolysis respectively behind the pancreatin enzymolysis; And 115 and 117 reagent mark pulmonary adenocarcinoma plasma membrane peptide hydrolysis carry out the LC-MS/MS mass spectrophotometry on Qstar XL LC-MS appearance.Fig. 2-A and Fig. 2-B are the mass spectrograms of twice mark before and after the Flotillin-1, from figure, can obtain Flotillin-1 and in pulmonary adenocarcinoma, express rising.Twice mass spectrometric data Treatment Analysis result (seeing table 1) also finds that Flotillin-1 expresses rising in pulmonary adenocarcinoma simultaneously.
The differential expression of table 1.iTRQA labeled analysis Flotillin-1 in adenocarcinoma of lung and the other normal tissues of cancer
The checking of embodiment 3 Western blottings
Be the difference of checking Flotillin-1 in human lung adenocarcinoma and the other normal tissues of cancer, we adopt Western blot to detect Flotillin-1 in 18 pairs of adenocarcinomas of lung and the other normal tissue expression level of pairing cancer.
Operating process is following:
1) collects 18 pairs of human lung adenocarcinomas and the other normal lung tissue of pairing cancer sample.
2) protein extracting: in liquid nitrogen, pulmonary adenocarcinoma and normal lung lung tissue are ground earlier, add indissoluble respectively and organize lysate (0.375mol/L Tris-HCl pH 8.8,1%SDS; 50m mmol/L DTT, 25% Glycerol, 1mM PMSF; 25 μ g/mL Aprotinin, 25 μ g/mL Leupeptin), cracking 1h on ice; Get supernatant behind 12000rpm, the 4 ℃ of centrifugal 30min and be the histocyte total protein, the Bradford method is measured protein concentration.
3) SDS-PAGE electrophoresis: 50 μ g total proteins carry out 10% polyacrylamide gel electrophoresis (SDS-PAGE) to be separated, on albumen electrotransfer to the nitrocellulose membrane (PVDF).
4) blotting membrane spends the night with 5% skim milk room temperature sealing 2h or 4 ℃ of sealings.
5) (the TBS-T damping fluid is washed film 3 times to the specific antibody 1 of blotting membrane and Flotillin-1 then for the purchase of abcam company, ab50671) (concentration 0.55 μ g/mL) incubated at room 2h or 4 ℃ of incubated overnight, each 10min.
6) with SA (the anti-IgG of rabbit) the incubated at room 1h of film and HR mark, the TBS-T damping fluid is washed film 3 times, each 10min.
7) luminous, development of ECL reagent and photographic fixing.With GAPDH is interior reference.The experiment triplicate
Fig. 3 is the expression of 5 pairs of typical pulmonary adenocarcinoma and the other Flotillin-1 of normal lung tissue of pairing cancer.3 figure results show that Flotillin-1 expresses rising in pulmonary adenocarcinoma.
Embodiment 4
The clinical meaning that immunohistochemical analysis Flotillin-1 expresses in pulmonary adenocarcinoma
We with Flotillin-1 specific antibody 2 (abcam company buys, and ab41927) unites to step new S-P SABC kit (Fujian steps new company) and form our diagnostic kit, and it is following that immunohistochemical staining is pressed concise and to the point step:
1) the paraffin organization chip section is with 100% xylene dewaxing 2 times, and each 20-40min is to dewaxing is clean fully;
2) with after 100%, 95%, 90%, the 75% gradient alcohol aquation, with PBS liquid (PH6.0) flushing 3 times, each 3min;
3) antigen retrieval: the section that will handle well places the section frame, puts into the beaker that contains the 1000ml citrate buffer, and electric furnace directly is heated to boiling, continues to boil 15min with little fire;
4) beaker is left burning things which may cause a fire disaster, naturally cool to room temperature, distilled water flushing twice, twice of PBS liquid flushing;
5) every section adds a peroxidase blocking solution (stepping novel agent box reagent A), hatches 10min under the room temperature.PBS flushing three times, each 3min;
6) remove PBS liquid, add a normal non-immune serum (stepping novel agent box reagent B), hatch 10min under the room temperature;
7) remove serum deprivation, (abcam company buys, and ab41927) (12 μ g/mL) 4 ℃ spends the night to add Flotillin-1 specific antibody 2 respectively.Replace an anti-negative contrast with PBS;
8) the PBS flushing is three times, each 3min.Remove PBS liquid, every section adds two anti-(stepping novel agent box reagent C) of a drip mark, hatches 10min under the room temperature.PBS flushing three times, each 3min;
9) remove PBS liquid, every section adds a streptomysin antibiotin-superoxide enzyme solutions (stepping novel agent box reagent D), hatches 10min under the room temperature.PBS flushing three times, each 3min;
10) remove PBS liquid, every section adds the DAB solution of two fresh configurations, and microscopically is observed 3-10min;
11) tap water flushing, haematoxylin is redyed, and indigo plant is returned in the tap water flushing;
12) gradient alcohol dehydration is dry, and xylene is transparent, the neutral gum sealing.
We comprise that to the paraffin-embedded tissue specimen that files the other normal lung tissue of 42 routine cancers, the 46 no lymphatic metastasis pulmonary adenocarcinoma of example and 62 examples have the lymphatic metastasis pulmonary adenocarcinoma to analyze with immunohistochemical staining.The dyeing standards of grading are following: at least 10 high power lens visuals field of picked at random (* 200), count 1000 cell number at least, with integral method result of calculation.Promptly unite score according to the staining power and the positive cell ratio of every section.Tinctorial strength: colourless 0 minute; Light yellow 1 minute; Pale brown look 2 minutes; Brown 3 minutes.Painted cells ratio: non-coloring branch;<30% is 1 minute; 30%~60% is 2 minutes;>60% is 3 minutes.Two kinds of scoring additions of tinctorial strength and painted cells ratio, the person expressed for low in 0~2 minute, and 3~4 fens persons are medium expression, and 5~6 fens persons are high expressed.Data statistics divides adopts SPSS13.0 software to carry out.The result is following:
1: immunohistochemical analysis Flotillin-1 is in cancer other normal lung tissue, no lymphatic metastasis pulmonary adenocarcinoma and the expression of lymphatic metastasis pulmonary adenocarcinoma is arranged.Fig. 4-A is the typical picture that Flotillin-1 expresses in the other normal lung tissue of cancer, is low express (feminine gender); 4-B is the typical picture that Flotillin-1 expresses in no lymphatic metastasis pulmonary adenocarcinoma, for moderate is expressed; 4-C is the typical picture that Flotillin-1 expresses in the lymphatic metastasis pulmonary adenocarcinoma is arranged, and is high expressed (strong positive).Table 1 result shows that Flotillin-1 is in cancer other normal lung tissue, no lymphatic metastasis pulmonary adenocarcinoma with have the expression of lymphatic metastasis pulmonary adenocarcinoma to exist between any two to have statistical significance difference on (p<0.05).Flotillin-1 expresses major part and is low express (negative rate 88%) in the other normal lung tissue of cancer; And Flotillin-1 most of positive expression (positive rate 67%) in the pulmonary adenocarcinoma tissue; And than the obvious height of expressing in the no lymphatic metastasis pulmonary adenocarcinoma, there is significant difference (p<0.05) in Flotillin-1 in the lymphatic metastasis pulmonary adenocarcinoma is arranged.
The other normal lung tissue of table 2:Flotillin-1 cancer, no lymphatic metastasis adenocarcinoma of lung and differential expression in the lymphatic metastasis pulmonary adenocarcinoma is arranged
A representes other normal tissues of cancer and no lymphatic metastasis pulmonary adenocarcinoma statistical comparisons between the two,
B representes not have the lymphatic metastasis pulmonary adenocarcinoma and lymphatic metastasis pulmonary adenocarcinoma statistical comparisons is between the two arranged;
*P<0.05.
The relation of 2:Flotillin-1 expression and adenocarcinoma of lung clinical pathological factors in pulmonary adenocarcinoma
Utilize single factor variance (Kruskal-Wallis test) to analyze Flotillin-1 clinical pathological factors variable of expression and adenocarcinoma of lung patient in pulmonary adenocarcinoma and comprise age (age), sex (gender), tumour differentiation (Differentiation), tumour big or small (pT stage), lymphatic metastasis state (pN stage) and the relation between clinical stages (Clinical stage).Statistics is found (seeing table 3): Flotillin-1 expression in pulmonary adenocarcinoma relevant with lymphatic metastasis and clinical stages (p<0.05), and lymphatic metastasis takes place the adenocarcinoma of lung patient of Flotillin-1 high expressed more easily, has later clinical stages.And Flotillin-1 expression and age, sex, tumour differentiation and tumour size in pulmonary adenocarcinoma all do not have significant correlation property.
The table expression of 3.Flotillin-1 in adenocarcinoma of lung and the relation of clinical pathologic characteristic
The relation of 3:Flotillin-1 expression and adenocarcinoma of lung patient recurrence
Adopt the relation of Kaplan-Meier method and regretional analysis Flotillin-1 expression and adenocarcinoma of lung patient recurrence; Kaplan-Meier tracing analysis result shows; Along with Flotillin-1 expression in the pulmonary adenocarcinoma increases; Its no recurrence rate (Relapse-free probability) obviously reduces (sees that Fig. 5-A), promptly recurrence rate obviously raises.Single argument Cox regretional analysis result shows (seeing the left hurdle of table 4): the adenocarcinoma of lung lymphatic metastasis is arranged, the expression of clinical stages and Flotillin-1 (p<0.05) with the relevant factor of adenocarcinoma of lung recurrence; The multivariate regression analysis result shows (seeing the left hurdle of table 5): lymphatic metastasis, the high expressed of clinical stages and Flotillin-1 are the risk factors (p<0.05) of adenocarcinoma of lung recurrence.
Table 4: the correlation factor of univariate analysis adenocarcinoma of lung patient recurrence and prognosis
Overall p<0.01.
The relation of 4:Flotillin-1 expression and adenocarcinoma of lung patients'prognosis
Adopt the relation of Kaplan-Meier method and regretional analysis Flotillin-1 expression and adenocarcinoma of lung patients'prognosis; Kaplan-Meier tracing analysis result shows: along with Flotillin-1 expression in the pulmonary adenocarcinoma increases, adenocarcinoma of lung patient's survival rate obviously descends and (sees Fig. 5-B).Single argument Cox regretional analysis result shows (seeing the right hurdle of table 4): the adenocarcinoma of lung lymphatic metastasis, and the expression of clinical stages and Flotillin-1 (p<0.05) is relevant with the adenocarcinoma of lung prognosis of patients; The multivariate regression analysis result shows (seeing the right hurdle of table 5): lymphatic metastasis, clinical stages,, high expressed later and Flotillin-1 was adenocarcinoma of lung independent prognostic factor (p<0.05).
The correlation factor of table 5. multivariable analysis adenocarcinoma of lung patient recurrence and prognosis
Overall p<0.05.