WO2018170981A1 - 一种翻译后修饰蛋白质组学的检测和定量方法 - Google Patents
一种翻译后修饰蛋白质组学的检测和定量方法 Download PDFInfo
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- the present invention relates to the field of comparative proteomics, and in particular to a method for detecting and quantifying post-translational modified proteomics.
- Protein post-translational modification is an important mechanism regulating gene expression and protein function, and plays a crucial role in the regulation of many biological processes. Abnormalities in post-translational modification of proteins are closely related to the development of many diseases. In the past few decades, a variety of novel protein post-translational modification types have been discovered and identified, providing an important basis for studying the post-translational modification of proteins by means of omics and discovering and understanding the function of post-translational modification of proteins.
- a method for detecting and quantifying post-translational modified proteomics wherein the sample to be tested and the internal standard are subjected to equal weight tandem mass labeling, and the labeled mixture is subjected to tandem mass spectrometry;
- the internal standard is a mixture of peptides rich in post-translational modifications to be detected.
- the method for detecting and quantifying post-translational modified proteomics does not need to be combined with an antibody, a solid phase metal affinity chromatography or an enrichment technique such as TiO 2 , which greatly reduces the experiment cost and shortens the experimental procedure; Adding the modified labeled peptide mixture can increase the total abundance of the post-translationally modified peptides to be detected in the sample, and the iso-reverse tandem mass labeling can be used to detect the modified peptides by mass spectrometry and MS/MS analysis. The chance.
- 1 is a flow chart of a method for detecting and quantifying post-translational modified proteomics provided by the present invention; the flow chart is applicable to a method for performing modification labeling at a protein level, and the sample is mainly divided into two groups, namely, a sample group to be studied and an inner sample. Standard group
- FIG. 2 is a flow chart of a method for detecting and quantifying post-translational modified proteomics provided by the present invention
- the flow chart is applicable to a method for performing modification labeling at a peptide level, and the sample is mainly divided into two groups, that is, a sample group to be studied. And internal standard group;
- Figure 3 is a comparison of the acetylated proteomics of the liver of the high fat diet mice of Example 1 and the MS/MS secondary mass spectrum corresponding to the acetylated peptides generated in the 2-hydroxyisobutyrylation proteomics;
- Figure 4 is a comparison of the acetylated proteomics of the liver of the high-fat diet mouse in Example 1 and the comparison of the MS/MS secondary mass spectrum corresponding to the acetylated peptide segment in the 2-hydroxyisobutyrylation proteomics. Region for the quantification of proteins and peptides;
- Example 5 is a MS/MS secondary mass spectrum corresponding to the dimethylated peptide segment in the dimethylated proteomics of the liver of the high fat diet of Example 2;
- Figure 6 is a view showing the region of the reporter group of the MS/MS secondary mass spectrum corresponding to the dimethylated peptide segment in the dimethylated proteomics of the liver of the high fat diet of Example 2;
- Figure 8 is a view showing the region of the reporter group of the MS/MS secondary mass spectrum corresponding to the phosphorylated peptide in the quantitative phosphorylation histochemistry of the colorectal cancer sample in Example 3.
- the present invention proposes a qualitative and quantitative proteomics method based on dual chemical labeling to amplify a protein post-translational modification signal.
- the invention utilizes a double chemically labeled sample as an internal standard to amplify the protein post-translationally modified peptide segment signal to a range that can be detected by biological mass spectrometry.
- the invention relates to a method for detecting and quantifying post-translational modified proteomics, and the use thereof in qualitative and quantitative research of post-translational modification, the method comprising:
- sample to be tested and the internal standard are subjected to equal weight tandem mass labeling, and the labeled mixture is subjected to tandem mass spectrometry;
- the internal standard is a mixture of peptides rich in post-translational modifications to be detected.
- post-translational modification types include: acylation (eg, lysine acetylation, formylation, palmitoylation, etc.), alkylation (eg, lysine methylation, arginine) Methylation, cysteine prenylation, etc., phosphorylation, ubiquitination, glycosylation, sulfation, selenization, sulfhydryl nitrosylation, adenylation (eg AMPylation, UMPylation, etc.) Hydroxylation (eg, lysine hydroxylation, proline hydroxylation, etc.) and iodination (eg, tyrosine iodization, etc.).
- acylation eg, lysine acetylation, formylation, palmitoylation, etc.
- alkylation eg, lysine methylation, arginine
- cysteine prenylation etc.
- phosphorylation
- the equal weight tandem mass label comprises: TMT (tandem mass tag), iTRAQ (isobaric tags for relative and absolute quantification), DiART (isostatic tag for relative and absolute quantification), DiART ( Deuterium isobaric amine reactive tag, CIT (caltech isobaric tags, California Science and Technology, etc.), CILAT (cleavable isobaric labeled affinity tag, heavy affinity tag), DiLeu (N, N-dimethyl) Leucines, N, N-dimethylated leucine quantitative label), IPTL (isobaric peptide termini labelling) label, QITL (quantitation by isobaric terminal labeling) label, IVTAL (in vivo terminal amino acid labeling) can be used in the technical solution of the present application as long as the label capable of achieving equal weight tandem mass labeling can be used.
- TMT tandem mass tag
- iTRAQ isobaric tags for relative and absolute quantification
- DiART isostatic tag for relative and absolute quantification
- DiART
- the post-translational modification to be detected on the internal standard may be obtained by artificially modifying the initial protein or peptide; the internal standard may also be a band separated by other prior art (for example, enrichment by an antibody).
- the protein or peptide to be post-translationally modified is to be detected; the internal standard may also be a chemically synthesized peptide containing a post-translational modification to be detected.
- the present invention increases the probability that a modified peptide is detected by mass spectrometry and subjected to MS/MS analysis by adding an internal standard to the sample to be tested.
- the active ingredient substantially contained is a single chemical label group and a double chemical label group;
- the single chemical labeling group is a sample of the protein to be tested, and is obtained after one equal weight tandem mass labeling;
- the double chemical labeling group is an internal standard, which is obtained by sequentially modifying the label (first chemical label) and the equal weight tandem mass label (second chemical label).
- the single chemical label set and the double chemical label set may be any number, but not higher than the labelable number of equal weight tandem mass labeling reagents; for example, if the equal weight tandem mass label is selected 10 For TMT reagents, the total number of groups of single chemical labeling group and double chemical labeling group should not exceed 10 groups.
- the MS1 primary map signal reflects the superposition of the same chemical peptide signal and the single chemical labeling of the same peptide signal. Due to the first chemical labeling, the abundance of the modified peptides in the double chemical labeling group is greatly improved, and after mixing with the modified peptides of the single chemical labeling group, the MS1 map signals are superimposed, and the endogenous post-translationally modified peptide signal can be amplified. In the case where the sensitivity of the mass spectrum is constant and the post-translational modification enrichment is not required, the probability of detection by mass spectrometry and MS/MS analysis is improved.
- the reporter group of the iso-heavy tandem mass labeling reagent distinguishes the source of the peptide signal from the double chemical label group and the single chemical label group, and the reporter group has a signal indicating that the corresponding peptide is present in the sample.
- the reporter group has no signal indicating that the corresponding peptide is not present in the corresponding sample.
- the signal ratio of the reporter group between the different samples reflects the relative content of the two peptides.
- the abundance ratio of proteins between different samples was obtained by weighted average of all peptides of the protein.
- the invention also has the advantages of qualitatively and quantitatively studying a plurality of post-translational modifications by using trace samples, does not require enrichment, saves time, and greatly reduces the cost of qualitative and quantitative research on protein and protein post-translational modification.
- the internal standard is a single protein or a mixture of a plurality of proteins; in theory, the protein used in the internal standard is as close as possible to the target protein, for example, the same family. Protein; most preferably, the internal standard is the same source protein as the protein to be studied, or the internal standard is a mixture with the target protein and other proteins.
- the present invention has many revolutionary breakthroughs: First, the use of the protein of the present invention is due to the increase in the content of modified peptides by the internal standard. The amount can be as low as microgram; second, the present invention does not require specific antibodies or other reagent enrichment to achieve qualitative and quantitative studies of post-translational modifications, and the quantification of post-translational modifications of proteins and proteins is accomplished simultaneously in a set of experiments.
- the present invention can simultaneously qualitatively and quantitatively study post-translational modification of various proteins, greatly reducing the time required for mass spectrometry, and saving A large amount of testing costs; Fourth, the reproducibility and repeatability of the experiment, due to the lack of antibody enrichment, and the simultaneous detection of multiple modifications, greatly reducing the error of human manipulation, in addition to a variety of modifications and proteins in one Completed in the group experiment, the machine error is greatly eliminated; fifth, the invention overcomes the SILAC method, the equal weight tandem mass standard Labeling agent labeling quantitation method of the conventional method, the limitations of non-standard quantitative method and the like used, almost no limitations on types of biological samples.
- the internal standard ie, the peptide mixture
- the peptide mixture is a mixture of peptides after the initial protein has been modified and enzymatically degraded, and/or is a modifiedly labeled peptide after initial proteolysis
- the mixture of segments, and/or is a synthetic mixture of peptides containing post-translational modifications to be detected, and/or a mixture of peptides enriched for post-translational modification of the library of peptides using antibodies or other enrichment reagents.
- the modification label is a chemical modification of the initial protein or the peptide after the initial proteolysis using a modified labeling reagent
- the modified labeling reagent comprises: an acylating reagent, an alkylating reagent, a phosphorylating reagent, a glycosylation reagent, a ubiquitinating reagent, a sulfating reagent, a selenization reagent, an adenylating reagent, and a sulfhydryl nitrite.
- Base hydroxylation reagent and iodinating reagent;
- the initial protein is from a group of protein samples to be tested, and/or a mixture of each group of protein samples to be tested, and/or a mixture of recombinant proteins; more preferably, the initial protein is to be tested a mixture of each group of proteins in the protein sample after the dimension reduction treatment; more preferably, the technical means for the dimension reduction treatment comprises using HPLC, an anion/cation exchange column or a C18 column for dimensionality reduction;
- the peptide after the initial proteolysis is subjected to dimensionality reduction treatment before chemical modification; more preferably, the technical means for the dimensionality reduction treatment comprises using HPLC, an anion/cation exchange column or a C18 column for dimensionality reduction. .
- the acylating agent comprises: a fatty acid and/or a derivative of an aromatic acid; the chemical agent used in the acylation labeling should be reactive with the protein or peptide under milder conditions. A high yield yields a protein or peptide that is specifically modified.
- the derivative includes: an activated ester, an acid halide compound, an intermolecular condensed acid anhydride, an intramolecular condensed acid anhydride, an acylated coenzyme A, and one of high energy compounds capable of reacting with a primary amino group, a secondary amino group, and a hydroxyl group of a specific amino acid.
- an activated ester an acid halide compound, an intermolecular condensed acid anhydride, an intramolecular condensed acid anhydride, an acylated coenzyme A, and one of high energy compounds capable of reacting with a primary amino group, a secondary amino group, and a hydroxyl group of a specific amino acid.
- an activated ester an acid halide compound
- an intermolecular condensed acid anhydride an intramolecular condensed acid anhydride
- an acylated coenzyme A an acylated coenzyme A
- the specific amino acid species labeled by the acylating reagent include: lysine, histidine, threonine, serine, tyrosine, arginine, tryptophan, 5-hydroxylysine, and protein ends Amino acid
- the fatty acid and/or aromatic acid comprises: acetic acid (64-19-7), propionic acid (79-09-4), butyric acid (107-92-6), 2-hydroxyisobutyric acid (594) -61-6), malonic acid (141-82-2), succinic acid (110-15-6), glutaric acid (110-94-1), crotonic acid (107-93-7), 3 -hydroxybutyric acid (300-85-6, 625-72-9, 6168-83-8), pyruvic acid (127-17-3), phosphoenolpyruvate (9067-77-0), oxalyl Acetic acid (328-42-7), citric acid (77-92-9), cis-aconitic acid (585-84-2), isocitric acid (320-77-4), malic acid (6915-15-7) ), fumaric acid (110-17-8), oxalyl succinic acid, lactic acid (50-21-5), 2-phosphoglycerate, 3-phosphoglycerate, diphosphate g
- the synthetic carboxyl group-containing compound and peptide include: a diglycine derivative; more preferably, the synthetic carboxyl group-containing compound and peptide include: N-Boc-diglycine, N-ene Propyl diglycine, N-propargyl diglycine, N-benzyl diglycine, N-arylallyl diglycine, and/or N-aryl propargyl bis glycine, and ubiquitin;
- the activated ester comprises: N-hydroxysuccinimide activated ester, N-hydroxythiosuccinimide activated ester, isocyanuric acid activated ester, dimethoxy substituted isocyanuric acid activated ester, five a fluorophenol activated ester, and other activated esters which are directly reactive with an amino group and a hydroxyl group;
- the acid halide compound comprises an acid chloride compound, an acid bromide compound, and an acid iodine compound.
- the specific amino acid species labeled by the ubiquitinating reagent include: lysine, histidine, threonine, serine, tyrosine, arginine, tryptophan, 5-hydroxylysine, and protein Terminal amino acid.
- the alkylating agent comprises a fatty aldehyde and an aromatic aldehyde; and/or; an alkyl halide and an aryl halide;
- the chemical reagent used in the alkylation labeling should be able to react with the protein or peptide under milder conditions, yielding a specifically modified protein or peptide in high yield.
- the alkylating agent labeled amino acid species include: arginine, tryptophan, histidine, cysteine and protein terminal amino acids;
- the fatty aldehyde and aromatic aldehyde include: formaldehyde, paraformaldehyde, acetaldehyde, acrolein, benzaldehyde;
- the alkyl halide and the aryl halide include: methyl iodide, methyl bromide, methyl chloride, ethyl iodide, ethyl bromide, ethyl chloride, allyl iodide, allyl bromide, allyl chloride , benzyl iodide, benzyl bromide, benzyl chloride, isoprenyl iodide, isoprene bromide, isoprenyl chloride, isoprene pyrophosphoric acid, isoprenyl methanesulfonic acid , geranyl chloride, geranyl bromine, geranyl iodine, geranyl pyrophosphate, geranyl methanesulfonic acid, farnesyl iodine, farnesyl bromide, farnesyl rate, method Glycosyl pyrophosphate
- the phosphorylating reagent comprises: ATP, a combination reagent of phosphoric acid and phosphorus pentoxide, phosphorus oxychloride, phosphorus pentachloride, allyl diethyl phosphate (3066-75- 9), bis(2-cyanoethyl)-N,N-diisopropylphosphoramidite (102690-88-0), bis[1-(2-nitrophenyl)ethyl]-N,N -diisopropylphosphoramidite (207516-14-1), bistrifluoromethylethyl phosphate (650-16-8), ⁇ -bromoethylphosphoryl dichloride (4167-02-6), 2-(carboxyethyl)triphenylphosphonium chloride (36626-29-6), 2-chloro-1,3,2-benzodioxanane-4-one (5381-99-7 ), 2-cyanoethyldiisopropy
- the first chemical label can be labeled at the protein level or at the level of the peptide after enzymatic digestion.
- the chemical reagent used for the first chemical labeling should be able to react with the protein under mild conditions, obtain a phosphorylated modified protein in high yield, or react with the peptide under mild conditions to obtain a high yield of phosphoric acid. Modify the peptide.
- the amino acid species labeled by the phosphorylating reagent include threonine, serine, tyrosine, histidine and lysine.
- prior to performing the isochronous tandem mass labeling on the initial protein and the sample of the protein to be detected further comprising pretreating all protein samples; the pretreatment comprising precipitation, drying, Enzymatic hydrolysis;
- the method for precipitating comprises chloroform methanol precipitation, TCA precipitation, acetone precipitation;
- the enzyme used for enzymatic hydrolysis includes trypsin, chymotrypsin, clostripain, pepsin, rLys-C protease, Glu protease (Glu-C), endopeptidase (Lys-C) One or more of Arg-C proteases.
- the modified label is performed at the initial protein level, depending on the type of post-translational modification to be detected and the use of an iso-heavy tandem mass labeling reagent.
- the modified label is carried out at the level of the peptide;
- the isochronous tandem mass label is labeled on the amino terminal or lysine of the protein
- the chemical modification can be performed at the initial protein and peptide levels; if the modification is used
- the labeling reagent can react with an amino group that is carried out at the initial protein level.
- the modified label can be performed at both the initial protein and peptide levels; preferred The modified label is carried out at the peptide level.
- the protein level in order to achieve higher labeling efficiency, the protein needs to be denatured.
- the reduction process is to open the disulfide bond of the protein, and then alkylation can modify the sulfhydryl group to prevent the regeneration of free sulfhydryl groups. Disulfide bond.
- Only the complete reduction and denaturation of the protein can ensure that the efficiency of labeling each sample is completely consistent. If it is not completely reduced, the labeling efficiency may be inconsistent due to the influence of secondary structure, which will inevitably affect the final quantitative result.
- the reductive alkylation treatment may also be omitted.
- the initial protein and the sample of the protein to be tested are subjected to a reduction treatment, and/or an alkylation treatment, prior to the equal weight tandem mass labeling;
- the reducing reagent used in the reduction treatment comprises DTT, TCEP, and the alkylating reagent used in the alkylation treatment comprises iodoacetamide.
- Iodoacetamide alkylates an open disulfide bond or the like, thus avoiding local recovery of the higher structure.
- the reducing reagent used in the reduction treatment comprises DTT, TCEP, and the alkylating reagent used in the alkylation treatment is an equal weight tandem mass label. Label the reagents.
- the chemical labeling reagent is greatly excessive, and the excess chemical labeling reagent residue will compete for the reaction to consume the iso-heavy tandem mass labeling reagent, affecting The efficiency of the labeling of the isochronous tandem mass labeling reagent affects the accuracy of the quantitative results, so in some embodiments of the invention, after the modified label, the excess modified labeling reagent is quenched with a quenching reagent.
- the quenching reagent is selected from one or more of the group consisting of hydroxylamine, ammonia, tris, primary and secondary ammonia compounds, most preferably hydroxylammonium and / or ammonia;
- the quenching agent is selected from the group consisting of formic acid;
- the quenching reagent is selected from the group consisting of a basic compound such as one or more of triethylamine, NaOH and NaHCO 3 .
- the combined sample is desalted using a C18 desalting column to reduce the effect of salts and other small molecular impurities in the sample on mass spectrometric detection.
- the present invention performs peptide fractionation by HPLC based on the difference in hydrophilicity and hydrophobicity of the peptide after the sample is combined with desalting.
- the fractionated peptide samples are combined according to a certain interval, and are generally combined into 10 to 30 tubes.
- the mass spectrometry data is processed using proteomic analysis software such as MaxQuant, Mascot, etc. to obtain data for qualitative and quantitative analysis of protein and protein post-translational modifications.
- proteomic analysis software such as MaxQuant, Mascot, etc.
- the detection and quantification methods of post-translational modification proteomics as described above are applications in qualitative and quantitative studies of post-translational modification of proteins in micro-biological samples.
- mice Feeding mice. The mice were divided into two equal groups, one for normal diet and the other for high-fat diets, all for 16 weeks.
- mice were anesthetized at a dose of 0.04 mL/10 g (anaesthetic 10% chloral hydrate), and 1 ⁇ PBS solution (sodium chloride 8.0g / L, potassium chloride 0.2g / L, disodium hydrogen phosphate heptahydrate 2.72g / L, potassium dihydrogen phosphate 0.245g / L)
- the liver of the mice was perfused through the hepatic portal vein to obtain liver tissue, which was frozen in liquid nitrogen and stored at -80 degrees for use.
- PBS lysate containing 1% NP-40, 0.5% sodium deoxycholate, 25mM nicotinamide, 10mM sodium butyrate, 1 ⁇ protease inhibitor (cocktail), 1 ⁇ phosphatase Inhibitor A solution, 1 ⁇ phosphatase inhibitor B solution in PBS
- PBS lysate containing 1% NP-40, 0.5% sodium deoxycholate, 25mM nicotinamide, 10mM sodium butyrate, 1 ⁇ protease inhibitor (cocktail), 1 ⁇ phosphatase Inhibitor A solution, 1 ⁇ phosphatase inhibitor B solution in PBS
- Double chemical labeling group (internal standard): a total of two groups, each group is 50 ⁇ g of 1:1 mixed normal diet mouse liver tissue and high fat diet mouse liver tissue protein extract;
- Single chemical labeling group (protein sample to be studied): a total of four groups, the first group is 50 ⁇ g normal diet mouse liver protein extract, the second group is 50 ⁇ g high fat diet mouse liver tissue protein extract, the third group is The first group is repeated and the fourth group is the second group of repetitions.
- Precipitating protein samples Four volumes of methanol, one volume of chloroform and three volumes of water were added to the six sets of protein samples of the inner standard group and the protein sample to be studied, respectively, and centrifuged (10000 g, 10 min). After centrifugation, the liquid is divided into three layers, which are followed by an aqueous phase layer, a protein layer, and a chloroform layer. The upper methanol and water mixed phases were gently removed, and 4 volumes of methanol were separately added to the 6 groups of samples, centrifuged (20000 g, 10 min), the supernatant was gently removed, and the residual organic reagent in the protein sample was evaporated at room temperature.
- TMT reagent sample Sample volume TMT reagent dosage TMT 6 -126 Internal standard (Kac) 50 ⁇ g 0.4mg TMT 6 -127 Internal standard (Khib) 50 ⁇ g 0.4mg TMT 6 -128 Normal diet mouse liver tissue-1 50 ⁇ g 0.4mg TMT 6 -129 High fat diet mouse liver tissue-1 50 ⁇ g 0.4mg TMT 6 -130 Normal diet mouse liver tissue-2 50 ⁇ g 0.4mg TMT 6 -131 High fat diet mouse liver tissue-2 50 ⁇ g 0.4mg
- the sample was dissolved by adding 300 ⁇ L of the phase A solution to the sample, centrifuged (10000 g, 20 min), and the supernatant was taken for injection.
- the chromatographic conditions are as follows (Table 2):
- Phase A Phase B (%) Flow rate (mL/min) 0 100 0 1.000 10 95 5 1.000 80 65 35 1.000
- a tube sample was collected every minute, and the first tube eluate was collected and combined into a group of 19 tubes, a total of 20 groups, and concentrated and dried separately.
- the method identified a total of 4,815 proteins, of which 4,679 proteins were quantifiable, and there were 122 proteins with significant differences in expression (average protein abundance ratio greater than 1.33 or less than 0.75), acetylation and 2
- the number of -hydroxyisobutyrylated modified proteins and peptides is shown in Table 3.
- the number of peptides with significant differences ie, the intensity ratio (high-fat diet group/normal diet group) is less than 0.75 or greater than 1.33.
- Single chemical labeling group (protein sample to be studied): a total of four groups, the first group is 50 ⁇ g normal diet mice (No. 1) liver tissue protein extract, and the second group is 50 ⁇ g high fat diet mice (No. 11) liver tissue Protein extract, the third group was 50 ⁇ g normal diet mice (No. 2) liver tissue protein extract, and the fourth group was 50 ⁇ g high fat diet mice (No. 12) liver tissue protein extract.
- Double chemical labeling group (internal standard): a group of 1:1:1:1 mixed normal diet mice and high-fat diet mice liver tissue protein extract 50ug;
- the internal standard group is methylated.
- TMT mark Five sets of samples of double chemical label and single chemical label were labeled with TMT 6 reagent. The specific amounts of the TMT reagent are as follows (Table 4).
- TMT reagent sample Sample volume TMT reagent dosage TMT 6 -126 Internal standard (K-dimethylation) 50 ⁇ g 0.4mg TMT 6 -127 blank 0 0 TMT 6 -128 Normal diet mouse-1 liver tissue 50 ⁇ g 0.4mg TMT 6 -129 High fat diet mouse-11 liver tissue 50 ⁇ g 0.4mg TMT 6 -130 Normal diet mouse-2 liver tissue 50 ⁇ g 0.4mg TMT 6 -131 High fat diet mouse-12 liver tissue 50 ⁇ g 0.4mg
- the method identified a total of 5,244 proteins, of which 50,000 were quantifiable and 335 were significantly different in expression (average protein abundance ratio greater than 1.33 or less than 0.75).
- a dimethylation modification was found on 1451 proteins, and there were 1314 (771 proteins) of peptides having a dimethylation modification site, of which 1239 peptides were quantifiable.
- there were significant differences in the level of dimethylation modification of 187 peptides (peptide abundance ratio greater than 1.33 or less than 0.75).
- Single chemical labeling group protein sample to be studied: three pairs (tumor tissue and paracancerous tissue) clinical samples of colorectal cancer, a total of 6 groups, each group of protein 50 ⁇ g;
- Double chemical labeling group (internal standard): a total of 1 group, three pairs (6 groups) of protein 1:1:1:1:1:1 mixed tissue protein extract 50ug;
- the internal standard group was subjected to phosphorylation labeling.
- the enzymatically purified peptide sample was concentrated and dried, and 50 ⁇ l of dry tetrahydrofuran, 1 ⁇ l of triethylamine, 1 ⁇ l of phosphorus oxychloride, and 4 h of incubation for 4 h, followed by addition of 20 ⁇ l of water, incubation at 4 degrees for 8 h, and concentrated and dried were added. Add 50 mM TEAB buffer and mark with TMT.
- TMT mark TMT reagent labeling was performed on the internal standard group and the seven groups of samples to be studied.
- the specific amounts of the TMT reagent are as follows (Table 5).
- TMT reagent sample Sample volume TMT reagent dosage TMT 10 -126 Colon cancer tissue-1 50 ⁇ g 0.4mg TMT 10 -127C Internal standard (phosphorylation) 50 ⁇ g 0.4mg TMT 10 -127N Colon cancer tissue-2 50 ⁇ g 0.4mg TMT 10 -128C Colon cancer tissue-3 50 ⁇ g 0.4mg TMT 10 -128N blank 0 0 TMT 10 -129C Paracancerous tissue-1 50 ⁇ g 0.4mg TMT 10 -129N blank 0 0 TMT 10 -130C Paracancerous tissue-2 50 ⁇ g 0.4mg TMT 10 -130N blank 0 0 TMT 10 -131 Paracancerous tissue-3 50 ⁇ g 0.4mg
- the method identified 2965 phosphorylated peptides, including 1 phosphorylation site on 2820 peptides, including 1878 serine phosphorylation sites and 904 threonine phosphorylation sites. , and 38 tyrosine phosphorylation sites. There are 2 phosphorylation sites on 139 peptides, including 118 serine phosphorylation sites, 77 threonine phosphorylation sites, and 83 tyrosine phosphorylation sites. There are 3 serine phosphorylation sites on 6 peptides.
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Abstract
Description
| TMT试剂 | 样品 | 样品量 | TMT试剂用量 |
| TMT6-126 | 内标物(Kac) | 50μg | 0.4mg |
| TMT6-127 | 内标物(Khib) | 50μg | 0.4mg |
| TMT6-128 | 正常饮食小鼠肝脏组织-1 | 50μg | 0.4mg |
| TMT6-129 | 高脂饮食小鼠肝脏组织-1 | 50μg | 0.4mg |
| TMT6-130 | 正常饮食小鼠肝脏组织-2 | 50μg | 0.4mg |
| TMT6-131 | 高脂饮食小鼠肝脏组织-2 | 50μg | 0.4mg |
| 时间 | A相(%) | B相(%) | 流量(mL/min) |
| 0 | 100 | 0 | 1.000 |
| 10 | 95 | 5 | 1.000 |
| 80 | 65 | 35 | 1.000 |
| 95 | 40 | 60 | 1.000 |
| 105 | 30 | 70 | 1.000 |
| 120 | 0 | 100 | 1.000 |
| TMT试剂 | 样品 | 样品量 | TMT试剂用量 |
| TMT6-126 | 内标物(K二甲基化) | 50μg | 0.4mg |
| TMT6-127 | 空白 | 0 | 0 |
| TMT6-128 | 正常饮食小鼠-1肝脏组织 | 50μg | 0.4mg |
| TMT6-129 | 高脂饮食小鼠-11肝脏组织 | 50μg | 0.4mg |
| TMT6-130 | 正常饮食小鼠-2肝脏组织 | 50μg | 0.4mg |
| TMT6-131 | 高脂饮食小鼠-12肝脏组织 | 50μg | 0.4mg |
| TMT试剂 | 样品 | 样品量 | TMT试剂用量 |
| TMT10-126 | 结肠癌组织-1 | 50μg | 0.4mg |
| TMT10-127C | 内标物(磷酸化) | 50μg | 0.4mg |
| TMT10-127N | 结肠癌组织-2 | 50μg | 0.4mg |
| TMT10-128C | 结肠癌组织-3 | 50μg | 0.4mg |
| TMT10-128N | 空白 | 0 | 0 |
| TMT10-129C | 癌旁组织-1 | 50μg | 0.4mg |
| TMT10-129N | 空白 | 0 | 0 |
| TMT10-130C | 癌旁组织-2 | 50μg | 0.4mg |
| TMT10-130N | 空白 | 0 | 0 |
| TMT10-131 | 癌旁组织-3 | 50μg | 0.4mg |
Claims (15)
- 一种翻译后修饰蛋白质组学的检测和定量方法,其特征在于,对待检蛋白样品及内标物进行等重串联质量标签标记,对标记后的混合物进行串联质谱分析;其中,所述内标物为富含待检测翻译后修饰的肽段混合物。
- 根据权利要求1所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,所述待检测翻译后修饰类型包括:酰化、烷基化、磷酸化、泛素化、糖基化、硫酸化、硒化、巯基亚硝基化、腺苷酰化、羟基化和碘化。
- 根据权利要求1或2所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,所述等重串联质量标签包括:TMT、iTRAQ、DiART、CIT、CILAT、DiLeu、IPTL、QITL、IVTAL。
- 根据权利要求1-3中任一项所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,所述肽段混合物为初始蛋白经修饰标记并酶解后的肽段混合物,和/或,为初始蛋白酶解后经修饰标记的肽段混合物,和/或,为人工合成含待检测翻译后修饰的肽段混合物,和/或,为利用抗体或其它富集试剂对肽段库进行翻译后修饰富集后的肽段混合物。
- 根据权利要求4所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,所述酶解的所用的酶包括胰蛋白酶、胰凝乳蛋白酶、梭菌蛋白酶、胃蛋白酶、rLys-C蛋白酶、Glu蛋白酶(Glu-C)、肽段内切酶(Lys-C)、Arg-C蛋白酶中的一种或多种。
- 根据权利要求4或5所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,所述修饰标记为利用修饰标记试剂对所述初始蛋白或所述初始蛋白酶解后的肽段进行化学修饰;优选的,所述修饰标记试剂包括:酰化试剂、烷基化试剂、磷酸化试剂、糖基化试剂、泛素化试剂、硫酸化试剂、硒化试剂、腺苷酰化试剂、巯基亚硝基化、羟基化试剂和碘化试剂;优选的,所述初始蛋白来自待检蛋白样品中的一组,和/或,待检蛋白样品各组的混合物,和/或,重组蛋白混合物;更优选的,所述的初始蛋白为待检蛋白样品中各组蛋白经降维处理后的混合物;更优选的,所述降维处理所用的技术手段包括利用HPLC、阴/阳离子交换柱或C18柱进行降维;优选的,所述初始蛋白酶解后的肽段在进行化学修饰之前经过降维处理;更优选的,所述降维处理所用的技术手段包括利用HPLC、阴/阳离子交换柱或C18柱进行降维。
- 根据权利要求6所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,在所述化学修饰标记后,过量的修饰标记试剂用淬灭试剂进行猝灭;优选的,当所述修饰标记试剂为酰化试剂时,猝灭试剂选自羟氨、氨水、tris碱、伯氨类和仲氨类化合物中的一种或多种;优选的,当所述修饰标记试剂为烷基化试剂,猝灭试剂选自蚁酸;优选的,当所述修饰标记试剂为磷酸化试剂及腺苷化试剂时,猝灭试剂选自碱性化合物。
- 根据权利要求6所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,在所述化学修饰标记后,过量的修饰标记试剂用淬灭试剂进行猝灭;优选的,当所述修饰标记试剂为酰化试剂时,猝灭试剂为羟氨和/或氨水;优选的,当所述修饰标记试剂为磷酸化试剂及腺苷化试剂时,猝灭试剂选自三乙胺、NaOH和NaHCO3中的一种或多种。
- 根据权利要求6所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,所述酰化试剂包括:脂肪酸和/或芳香酸的衍生物;所述衍生物包括:活化酯、酰卤化合物、分子间缩合的酸酐、分子内缩合的酸酐、酰化辅酶A,以及能够与特定氨基酸的伯氨基、仲氨基和羟基反应的高能化合物中的一种或多种;优选的,所述酰化试剂标记的特定氨基酸种类包括:赖氨酸、组氨酸、苏氨酸、丝氨酸、酪氨酸、精氨酸、色氨酸、5-羟赖氨酸以及蛋白末端氨基酸;优选的,所述脂肪酸和/或芳香酸包括:乙酸、丙酸、丁酸、丙二酸、丁二酸、戊二酸、巴豆酸、3-羟基丁酸、2-羟基异丁酸、丙酮酸、磷酸烯醇式丙酮酸、草酰乙酸、柠檬酸、顺乌头酸、异柠檬酸、苹果酸、富马酸、草酰琥珀酸、乳酸、2-磷酸甘油酸、3-磷酸甘油酸、二磷酸酯甘油酸、半乳糖醛酸、甲基丙二酸、羟甲基戊二酸、2-酮丁酸、2-羟基丁酸、4-吡哆酸、3-甲基-2-氧丁酸、对羟基苯乙酸、3-羟基月桂酸、2-甲基柠檬酸、3-羟基-十四烷二酸、2-羟甲基丁酸、3-羟基苯乙酸、己二酸、N-(3-甲基-1-氧代-2-丁烯基)氨基乙酸、3,4-二羟基苯基丙酸、2-羟基癸二酸、2-羟基-2-甲基丁二酸、3-羟基戊二酸、高藜芦酸、N-(2 -呋喃甲酰基)甘氨酸、2,3-二羟基苯甲酸、2-异丙基苹果酸、2-羟基-3-甲基丁酸、3-羟基十二烷二酸、2-甲基戊二酸、3A-羟基-7-氧代-5Β-胆烷酸、辛酸、香草酸、7-羟基辛酸、3-甲基-2-氧基戊酸、2-甲基-3-羟基丁酸、2,4-二羟基丁酸、2,3-二羟基丁酸、对羟基苯甲酸、正癸酸、鹅去氧胆酸、2-羟甲基丙酸、3,4-二羟基丁酸、3-羟基己二酸、3-羟基癸二酸、3-甲基戊烯二酸、5-羟基己酸、3-羟基戊酸、N-乙酰甘氨酸、己酸、尿刊酸、3B-羟基-D5-胆烯酸、2-羟基-3-甲基戊酸、(2S)-2-羟基-己二酸、3-羟基-辛二酸、1b,3a,12a-三羟基-5b-胆碱酸、樹膠糖酸、3-甲基戊二酰肉毒碱、3-甲基己二酸、D-3-苯乳酸、半乳糖酸、肉桂酸、磷烯醇丙酮酸、L-焦谷氨酸、肌氨酸、3-甲氧基-4-羟基扁桃酸、粪卟啉二盐酸盐、反油酸、硫酸软骨素、癸烯二酸、2-羟基戊二酸、三羟丁酸、乳清酸、3,5-二羟基-3-甲基戊酸、N-乙酰神经氨酸、喹啉酸、原卟啉、糠酸、胆酸、戊烯二酸、乙基丙二酸、十二烷二酸、葡萄糖酸、D-泛酸、血苷5'-单磷酸、棕榈酸、棕榈酰肉碱、2-氧代己二酸、去氧胆酸、甘氨脱氧胆酸、柠康酸、4,6-二氧代庚酸、甘氨鹅脱氧胆酸、月桂酸、L-乙酰基肉碱、苯丙酮酸、油酸、α-酮戊二酸、苯乙酸、黏酸、粪卟啉1、癸酰肉碱、葡糖二酸、2-羟基-4-甲基戊酸、L-苹果酸、L-脯氨酸、马来酸、L-乳酸、3-吲哚乙酸、庚酸、邻羟基苯乙酸、亚油酸、N-异戊酰氨基乙酸、3Β-熊去氧胆酸、尿黑酸、甘氨胆酸、甘油酸、甲酸、2,5-二羟基苯甲酸、(3R)-3-(3-甲基丁酰氧基)-4-(三甲基铵)丁酸内盐、4-甲基戊酸、S-2-羟基戊二酸、4-甲基-2-氧代戊酸、甘氨石胆酸、乙醇酸、高香草酸、乙醛酸、叶酸、甘氨酸、3-羟丙酸、己酰甘氨酸、DL-扁桃酸、乙酰肉碱、4-羟苯基丙酮酸、甘氨熊胆酸、3-氧丁酸、左旋肉碱、六氢吡啶-α-羧酸、N,N-二甲基甘氨酸、2-甲基-3-羟基丙酸、D-生物素、甜菜碱、胆红素、4-羟基丁酸、2-羟基辛酸、马尿酸、L-2-哌啶酸、异石胆酸、甘油-L-脯氨酸、L-羟基脯氨酸、2-甲基-2-羟基丙酸、异丁酰基甘氨酸、S-磺基-L-半胱氨酸、DL-3-羟基犬尿氨酸、猪去氧胆酸、羟基苯乙酰甘氨酸、异丁酰-L-肉碱、DL-高半胱氨酸、L-高肌肽、L-α-羟基异己酸、L-3-苯乳酸、3-羟基扁桃酸、3-甲基戊二酸、β-羟基异戊酸、3-(4-羟基苯基)乳酸、L-己酰肉碱、甘氨酰-L-亮氨酸、猪胆酸、石胆酸、5-羟基吲哚-3-乙酸、氢化肉桂酸、N-乙酰-L-丙氨酸、十九烷酸、DL-Β-苯乳酸、丙甘氨酸、壬二酸、乳清苷、L-辛酰肉碱、皮脂酸、植烷酸、D-焦谷氨酸、肉豆蔻酸、3-磷甘油酸、N-丁酰甘氨酸、N-乙酰-L-天门冬氨酸、苯乙酰甘氨酸、4-羟基扁桃酸、丙酰肉碱、唾液乳糖、十五烷酸、硬脂酸、脲基琥珀酸、2-羟基马尿酸、壬酸、硬脂酰肉碱、L-2-氨基己酸、3-羟基肉桂酸、DL-O-磷酸丝氨酸、甲基 丁二酸、四氢叶酸、维A酸、3,4-二羟基苯甲酸、2-羟基戊酸、2-酮己酸、2-戊酮酸、3,4-二羟基扁桃酸、对氨基马尿酸、5-甲氧基水杨酸、苯甲酸、异丁酸、丙戊酸、邻乙酰水杨酸、3-氯-L-酪氨酸、N-乙酰-L-半胱氨酸、3-氨基苯甲酸、阿斯巴甜、水杨酸、6-氨基己酸、N-亚胺代甲酰基-L-谷氨酸、庚二酸、戊二酸单乙酯、N-甘氨酸、N-乙酰-L-酪氨酸、D-核糖酸、葫芦巴碱、4,8-二羟基喹啉-2-甲酸、L-缬氨酸、十一烷二酸、正戊酸、辛二酸、L-瓜氨酸、磺基疏石酸、反式-4-羟基环己基乙酸、十三酸、琥珀酰腺苷、尿卟啉III、熊果胆酸、L-色氨酸、反式-2-十二碳烯二酸、尿卟啉I、S-(5'-腺苷)-L-高半胱氨酸、苏糖酸、二十二酸、熊去氧胆酸、反式阿魏酸、琥珀酰甘氨酸、3-羟基-4-甲氧基肉桂酸、L-酒石酸、反式-乌头酸、N-巴豆酰基甘氨酸、DL-2-氨基辛酸、L-半胱亚磺酸、D-丙氨酸、D-2-羟基丙酸、6-磷酸葡糖醛酸、N6,N6,N6-三甲基-L-赖氨酸、3,4-二羟基苯乙酸、3-羟基-2-羰基丙酸、吡咯烷羟基羧酸、2,6-二氨基庚二酸、亚麻酸、对氨基苯甲酸、甲基叶酸盐、前列腺素D2,3-甲氧基酪氨酸、前列腺素E1、N-甲酰甲硫胺酸、血管紧张素II、血管紧张素Ⅲ、花生四烯酸、脑啡肽L、二氢叶酸、异冬谷酸、[5S,12R]-二羟基-[6Z,8E,10E,14Z]-二十碳四烯酸、对甲氧基苯甲酸、邻氨基苯甲酸、N-乙酰-L-谷氨酰胺、地诺前列素、氨基丙二酸、5-氨基乙酰丙酸、二十三烷酸、4-三甲基铵丁酸、S-腺苷-L-蛋氨酸、白三烯C4、地诺前列酮、15-酮基-13,14-二氢前列腺素A2、琥珀半醛、硫辛酸、血栓素A2、3-羟基-2-氨基苯甲酸、烟酸、20-羟基-白三烯B4、3-甲基硫代丙酸、3-吡啶乙酸、二甲基精氨酸、3-氯苯甲酸、2-氧代-4-甲硫基丁酸、亚叶酸、苯甲酰甲酸、α-羟己酸,以及一些人工合成的含有羧基的化合物和肽段;优选的,所述人工合成的含有羧基的化合物和肽段包括:二甘氨酸衍生物;更优选的,所述人工合成的含有羧基的化合物和肽段包括:N-Boc-二甘氨酸、N-烯丙基二甘氨酸、N-炔丙基二甘氨酸、N-苄基二甘氨酸、N-芳基烯丙基二甘氨酸,和/或,N-芳基炔丙基二甘氨酸,和泛素;优选的,所述活化酯包括:N-羟基琥珀酸亚胺活化酯、N-羟基硫代琥珀酸亚胺活化酯、异氰尿酸活化酯、二甲氧基取代的异氰尿酸活化酯、五氟苯酚活化酯,以及其它可以和氨基和羟基直接反应的活化酯;优选的,所述酰卤化合物包括:酰氯化合物、酰溴化合物、酰碘化合物。
- 根据权利要求6所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,所述烷基化试剂包括脂肪醛和芳香醛;和/或,烷基卤化物和芳基卤化物;优选的,所述烷基化试剂标记的氨基酸种类包括:精氨酸、色氨酸、组氨酸、半胱氨酸以及蛋白末端氨基酸;优选的,所述脂肪醛和芳香醛包括:甲醛、多聚甲醛、乙醛、丙烯醛、苯甲醛;优选的,所述烷基卤化物和芳基卤化物包括:碘甲烷、溴甲烷、氯甲烷、碘乙烷、溴乙烷、氯乙烷、烯丙基碘、烯丙基溴、烯丙基氯、苄基碘、苄基溴、苄基氯、异戊二烯基碘、异戊二烯基溴、异戊二烯基氯、异戊二烯基焦磷酸、异戊二烯基甲磺酸、牻牛儿基氯、牻牛儿基溴、牻牛儿基碘、牻牛儿基焦磷酸、牻牛儿基甲磺酸、法呢基碘、法呢基溴、法呢基率、法呢基焦磷酸、法呢基甲磺酸、牻牛儿基牻牛儿基氯、牻牛儿基牻牛儿基溴、牻牛儿基牻牛儿基碘、牻牛儿基牻牛儿基焦磷酸、牻牛儿基牻牛儿基甲磺酸。
- 根据权利要求6所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,所述磷酸化试剂包括:ATP、磷酸和五氧化二磷的组合试剂、三氯氧磷、五氯化磷、磷酸烯丙基二乙酯、双(2-氰乙基)-N,N-二异丙基亚磷酰胺、双[1-(2-硝基苯基)乙基]-N,N-二异丙基亚磷酰胺、双三氟甲基乙基磷酸酯、β-溴乙基磷酰二氯、2-(羧乙基)三苯基氯化膦、2-氯-1,3,2-苯并二氧磷杂环己烷-4-酮、2-氰基乙基二异丙基氯代亚磷酰胺、2-氰乙基二氯磷酸酯、双(二异丙基氨基)(2-氰基乙氧基)膦、二苄基二乙基胺基膦、二苄基二异丙基胺基膦、亚磷酸二苄酯、二苄基磷酰基氯、N,N-二乙基亚磷酰胺二叔丁酯、N,N-二异丙基亚磷酰胺二叔丁酯、二对氯苯基-N,N-二异丙基亚磷酰胺、二乙基二氯磷、二氯-N,N-二异丙基亚磷酰胺、二乙基(3-溴丙基)膦酸酯、二乙基-N,N-二异丙基亚磷酰胺、4-(二乙基磷酰基)-3-甲基-2-丁烯腈、甲苯磺酰氧甲基膦酸二乙酯、二甲基N,N-二乙基亚磷酰胺、N,N-二异丙基亚膦酸二甲酯酰胺、二氯化乙基磷酸、甲基三苯氧基碘磷、羟甲基磷酸、6-(O-磷酰胆碱)羟基己酸、焦磷酸四苄酯、三(四丁基铵)氢焦磷酸钾盐、3-O-苯甲基-2-膦酰基-D-甘油酸三钠盐、亚甲基二磷酸四乙酯、乙酰甲胺磷、三偏磷酸盐;优选的,所述磷酸化试剂标记的氨基酸种类包括苏氨酸、丝氨酸、酪氨酸、组氨酸和赖氨酸。
- 根据权利要求6所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,当所述等重串联质量标签标记在蛋白质末端氨基或赖氨酸上时,如果所用的修饰标记试剂无法 和氨基反应,所述化学修饰在初始蛋白和肽段水平进行均可;如果所用的修饰标记试剂可以和氨基反应,所述化学标记在初始蛋白水平进行;当所述等重串联质量标签标记在半胱氨酸巯基上、而所用的修饰标记试剂不能和半胱氨酸巯基反应时,所述修饰标记在初始蛋白和肽段水平进行均可;优选的,所述修饰标记在肽段水平进行。
- 根据权利要求4~12任一项所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,在所述等重串联质量标签标记之前,对所述初始蛋白及所述待检蛋白样品进行还原处理,和/或,烷基化处理;优选的,当所述等重串联质量标签标记在蛋白质末端氨基或赖氨酸上时,所述还原处理所用还原试剂包括DTT、TCEP,所述烷基化处理所用烷基化试剂包括碘乙酰胺;优选的,当所述等重串联质量标签标记在半胱氨酸巯基上时,所述还原处理所用还原试剂包括DTT、TCEP,所述烷基化处理所用烷基化试剂为等重串联质量标签标记试剂。
- 根据权利要求1~13任一项所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,在对所述待检蛋白样品进行等重串联质量标签标记之前,还包括对所述待检蛋白样品进行预处理;所述预处理包括沉淀、干燥、酶解。
- 根据权利要求14所述翻译后修饰蛋白质组学的检测和定量方法,其特征在于,所述沉淀的方法包括氯仿甲醇沉淀法、TCA沉淀法、丙酮沉淀法。
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| CN118837462B (zh) * | 2024-07-17 | 2025-02-28 | 上海交通大学医学院附属瑞金医院 | 相同色谱系统下13个代谢调控核心分子的测定方法及其检测判别模型的构建 |
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| EP4220173A3 (en) * | 2019-01-16 | 2023-10-18 | Regeneron Pharmaceuticals, Inc. | Methods for characterizing disulfide bonds |
| US12000839B2 (en) | 2019-01-16 | 2024-06-04 | Regeneron Pharmaceuticals, Inc. | Methods for characterizing disulfide bonds |
| WO2022060345A1 (en) * | 2019-09-16 | 2022-03-24 | Battelle Memorial Institute | Improved nanoliter-scale sample processing and mass spectrometry acquisition method for single cell proteomics |
| WO2021154764A1 (en) * | 2020-01-27 | 2021-08-05 | Regeneron Pharmaceuticals, Inc. | Tandem mass tag multiplexed quantitation of post-translational modifications of proteins |
| CN115210573A (zh) * | 2020-01-27 | 2022-10-18 | 瑞泽恩制药公司 | 蛋白质翻译后修饰的串联质谱标记多重定量 |
| US11639939B2 (en) | 2020-01-27 | 2023-05-02 | Regeneron Pharmaceuticals, Inc. | Tandem mass tag multiplexed quantitation of post-translational modifications of proteins |
| US12135328B2 (en) | 2020-01-27 | 2024-11-05 | Regeneron Pharmaceuticals, Inc. | Tandem mass tag multiplexed quantitation of post-translational modifications of proteins |
| CN111521465A (zh) * | 2020-05-27 | 2020-08-11 | 中国医学科学院基础医学研究所 | 一种用于蛋白质组学分析的样本制备方法 |
| CN111521465B (zh) * | 2020-05-27 | 2022-02-08 | 中国医学科学院基础医学研究所 | 一种用于蛋白质组学分析的样本制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108627647A (zh) | 2018-10-09 |
| US20200033361A1 (en) | 2020-01-30 |
| CN108627647B (zh) | 2020-06-19 |
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