JP2020173228A5 - - Google Patents

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JP2020173228A5
JP2020173228A5 JP2019076685A JP2019076685A JP2020173228A5 JP 2020173228 A5 JP2020173228 A5 JP 2020173228A5 JP 2019076685 A JP2019076685 A JP 2019076685A JP 2019076685 A JP2019076685 A JP 2019076685A JP 2020173228 A5 JP2020173228 A5 JP 2020173228A5
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glycosaminoglycan
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biological sample
liquid chromatography
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表1中、「CS」はコンドロイチン硫酸、「DS」はデルマタン硫酸、「HS」はヘパラン硫酸、「KS」はケラタン硫酸の略号である。
また、ΔDi−4S、Di−0Sはそれぞれコンドロイチン硫酸、デルマタン硫酸がコンドロイチナーゼBで分解(消化)されてできる二糖であり、ΔDiHS−0S、ΔDiHS−NS、ΔDiHS−6Sはヘパラン硫酸がヘパリチナーゼにより分解されてできる二糖であり、Gal−GlcNac(6S)、Gal(6S)−GlcNac(6S)はケラタン硫酸がケラタナーゼIIで分解されてできる二糖である。
In Table 1, "CS" is an abbreviation for chondroitin sulfate, "DS" is an abbreviation for dermatan sulfate, "HS" is an abbreviation for heparan sulfate, and "KS" is an abbreviation for keratan sulfate.
In addition, ΔDi-4S and Di-0S are disaccharides formed by decomposing (digesting) chondroitin sulfate and dermatan sulfate with chondroitinase B, respectively, and ΔDiHS-0S, ΔDiHS-NS, and ΔDiHS-6S are heparan sulfate heparanase. Gal-GlcNac (6S) and Gal (6S) -GlcNac (6S) are disaccharides formed by decomposing keratan sulfate with keratanase II.

[実施例3]
生体試料として、GAG特異的酵素であるコンドロイチナーゼB、ヘパリチナーゼ、ケラタナーゼIIの混合液を添加した血液(全血)をろ紙に含ませて乾燥させた乾燥ろ紙血(乾燥血液ろ紙(Dried Blood Spots(DBS))試料を用い、該DBS試料から抽出した二糖を含む回収物をLC/MS/MSに導入してGAGの定量分析を行った。LC分析条件、MS分析条件、MRMの測定条件は実施例2と同じ条件に設定した。この実施例では、10個のDBS試料(DBS1〜10)を用意した。DBS試料から回収物を得、LC/MS/MSに導入するまでの手順は以下の通りである。
[Example 3]
As a biological sample, dried blood (Dried Blood Spots) obtained by impregnating filter paper with blood (whole blood) supplemented with a mixture of GAG-specific enzymes chondroitinase B, heparitinase, and keratanase II and drying it. (DBS)) ) Using the sample, the recovered product containing disaccharide extracted from the DBS sample was introduced into LC / MS / MS and quantitative analysis of GAG was performed. The LC analysis conditions, the MS analysis conditions, and the MRM measurement conditions were set to the same conditions as in Example 2. In this example, 10 DBS samples (DBS1-10) were prepared. The procedure for obtaining the recovered product from the DBS sample and introducing it into LC / MS / MS is as follows.

<二糖の回収及びLC/MS/MSへの導入>
1.各DBS試料の血液が含浸している部分をDBSパンチャー(PerkinElmer(登録商標)、株式会社パーキンエルマージャパン)で切り出してディスク(直径3.3mm)を得た。
2.ディスクを、100μLの0.1%BSAを含有する、96ウェルフィルタープレート(Omega 10K、日本ポール株式会社)の各ウェルに入れた。
3.各ウェルにGAG特異的酵素(コンドロイチナーゼB、ヘパリチナーゼおよびケラタナーゼII)を添加し、37℃で一晩インキュベートした。
4.得られたGAGの消化物をフィルタープレートでろ過し、得られたろ過液を2500×gで15分間、遠心分離した後、回収物をLC / MS / MSに導入した。
<Recovery of disaccharide and introduction to LC / MS / MS>
1. 1. The blood-impregnated portion of each DBS sample was cut out with a DBS puncher (PerkinElmer (registered trademark), PerkinElmer Japan Co., Ltd.) to obtain a disc (diameter 3.3 mm).
2. The disc was placed in each well of a 96-well filter plate (Omega 10K, Nippon Pole KK) containing 100 μL of 0.1% BSA.
3. 3. GAG-specific enzymes (chondroitinase B, heparitinase and keratanase II) were added to each well and incubated overnight at 37 ° C.
4. The obtained digested product of GAG was filtered through a filter plate, and the obtained filtrate was centrifuged at 2500 × g for 15 minutes, and then the recovered product was introduced into LC / MS / MS.

[実施例4]
生体試料として、GAG特異的酵素であるコンドロイチナーゼB、ヘパリチナーゼ、ケラタナーゼIIの混合液を添加した血液(血清)試料を用い、各血清試料から抽出した二糖を含む回収物をLC/MS/MSに導入してGAGの定量分析を行った。LC分析条件、MS分析条件、MRMの測定条件は実施例2と同じ条件に設定した。この実施例では、10個の血清試料(Serum2、4、6、8、10、12、14、16、18、20)を用意した。血清試料から回収物を得、LC/MS/MSに導入するまでの手順は、以下の通りである。
[Example 4]
As a biological sample, a blood (serum) sample to which a mixed solution of GAG-specific enzymes chondroitinase B, heparitinase, and keratanase II was added was used, and a recovered product containing disaccharide extracted from each serum sample was LC / MS /. It was introduced into MS and quantitative analysis of GAG was performed. The LC analysis conditions, the MS analysis conditions, and the MRM measurement conditions were set to the same conditions as in Example 2. In this example, 10 serum samples (Serum 2 , 4, 6, 8, 10, 12, 14, 16, 18, 20) were prepared. The procedure for obtaining the recovered product from the serum sample and introducing it into LC / MS / MS is as follows.

<分析結果>
LC/MS/MSにより分析した結果、得られたMRMクロマトグラムを図4に示す。図には、それぞれ、ΔDi−4S、ΔDiHS−0S、ΔDiHs−NS、Gal−GlcNAc(6S)、Gal(6S)−GlcNAc(6S)、コンドロシンのそれぞれのプリカーサーイオンのm/zとプロダクトイオンのm/zの組合せをMRMトランジションとして設定し、LC/MS/MS分析した結果、得られたMRMクロマトグラムが示されている。
<Analysis result>
The MRM chromatogram obtained as a result of analysis by LC / MS / MS is shown in FIG. In FIG. 4 , the m / z and product ions of the precursor ions of ΔDi-4S, ΔDiHS-0S, ΔDiHs-NS, Gal-GlcNAc (6S), Gal (6S) -GlcNAc (6S), and chondrosin, respectively, are shown. As a result of setting the combination of m / z as the MRM transition and performing LC / MS / MS analysis, the obtained MRM chromatogram is shown.

また、本発明の第2態様は、
生体試料に複数種類のグリコサミノグリカン特異的酵素を添加して、該生体試料に含まれるグリコサミノグリカン由来の複数種類の二糖を生成する第1工程と、
液体クロマトグラフィ質量分析法により、前記複数種類の二糖を分離して分析する第2工程と
を備え、
前記液体クロマトグラフィ質量分析法における液体クロマトグラフィで用いられるカラムが、官能基としてのアダマンチル基が結合された固相担体が充填されたカラムである、分析方法である。
The second aspect of the present invention is
The first step of adding a plurality of types of glycosaminoglycan-specific enzymes to a biological sample to produce a plurality of types of disaccharides derived from glycosaminoglycan contained in the biological sample.
A second step of separating and analyzing the plurality of types of disaccharides by a liquid chromatography mass analysis method is provided.
The column used in liquid chromatography in the liquid chromatography mass spectrometry is an analysis method in which a column is packed with a solid phase carrier to which an adamantyl group as a functional group is bonded.

発明の第4態様は、第1態様のグリコサミノグリカンの分析方法において、前記第1酵素によって生成される二糖にΔDi−4Sが含まれており、前記第2酵素によって生成される二糖にΔDiHS−6Sが含まれているか、前記第1酵素によって生成される二糖にΔDi−0Sが含まれており、前記第2酵素によって生成される二糖にΔDiHS−0Sが含まれているものである。
In the fourth aspect of the present invention, in the method for analyzing glycosaminoglycan of the first aspect, ΔDi-4S is contained in the disaccharide produced by the first enzyme, and the disaccharide produced by the second enzyme is two. The sugar contains ΔDiHS-6S, or the disaccharide produced by the first enzyme contains ΔDi-0S, and the disaccharide produced by the second enzyme contains ΔDiHS-0S. It is a thing.

また、本発明の第2態様の別の側面は、
被検者から生体試料を取得する工程と、
前記生体試料に複数種類のグリコサミノグリカン特異的酵素を添加して、該生体試料に含まれるグリコサミノグリカン由来の複数種類の二糖を生成する工程と、
液体クロマトグラフィ質量分析法により、前記複数種類の二糖を分離して分析する工程と、
前記分析結果に基づき前記被検者におけるムコ多糖症の有無を検査する工程とを備え、
前記液体クロマトグラフィ質量分析法における液体クロマトグラフィで用いられるカラムが、官能基としてのアダマンチル基が結合された固相担体が充填されたカラムである、ムコ多糖症の検査方法である。
In addition, another aspect of the second aspect of the present invention is
The process of obtaining a biological sample from a subject and
A step of adding a plurality of types of glycosaminoglycan-specific enzymes to the biological sample to produce a plurality of types of disaccharides derived from glycosaminoglycan contained in the biological sample.
A step of separating and analyzing the plurality of types of disaccharides by liquid chromatography mass spectrometry, and
A step of inspecting the subject for the presence or absence of mucopolysaccharidosis based on the analysis result is provided.
The column used in the liquid chromatography in the liquid chromatography mass spectrometry is a column packed with a solid phase carrier to which an adamantyl group as a functional group is bound, which is a method for testing mucopolysaccharidosis.

Claims (5)

生体試料に複数種類のグリコサミノグリカン特異的酵素を添加して、該生体試料に含まれるグリコサミノグリカン由来の複数種類の二糖を生成する第1工程と、
液体クロマトグラフィ質量分析法により、前記複数種類の二糖を分離して分析する第2工程と
を備え、
前記液体クロマトグラフィ質量分析法における液体クロマトグラフィで用いられるカラムが、官能基としてのアミド基が結合された固相担体が充填されたカラムである、グリコサミノグリカンの分析方法。
The first step of adding a plurality of types of glycosaminoglycan-specific enzymes to a biological sample to produce a plurality of types of disaccharides derived from glycosaminoglycan contained in the biological sample.
A second step of separating and analyzing the plurality of types of disaccharides by liquid chromatography mass spectrometry is provided.
A method for analyzing glycosaminoglycan, wherein the column used in liquid chromatography in the liquid chromatography mass spectrometry is a column packed with a solid phase carrier to which an amide group as a functional group is bonded.
前記第1工程において、前記複数種類のグリコサミノグリカン特異的酵素のうち、前記生体試料に含まれるグリコサミノグリカン由来の複数種類の二糖のうち少なくとも1種の二糖を生成する第1酵素を前記生体試料に添加する工程と、前記複数種類のグリコサミノグリカン特異的酵素のうち、前記第1酵素によって生成される二糖以外のグリコサミノグリカン由来の1又は複数種類の二糖を生成する第2酵素を添加する工程とを備え、
前記第2工程において、前記第1酵素が添加された生体試料と、前記第2酵素が添加された生体試料を、それぞれ液体クロマトグラフィ質量分析する、請求項1に記載のグリコサミノグリカンの分析方法。
In the first step, among the plurality of types of glycosaminoglycan-specific enzymes, at least one of the plurality of types of glycosaminoglycan-derived disaccharides contained in the biological sample is produced. The step of adding an enzyme to the biological sample and one or more kinds of glycosaminoglycan-derived disaccharides other than the disaccharide produced by the first enzyme among the plurality of kinds of glycosaminoglycan-specific enzymes. It is equipped with a step of adding a second enzyme that produces
The method for analyzing glycosaminoglycan according to claim 1, wherein in the second step, the biological sample to which the first enzyme is added and the biological sample to which the second enzyme is added are each subjected to liquid chromatography mass analysis. ..
前記第1酵素によって生成される二糖にΔDi−4Sが含まれており、前記第2酵素によって生成される二糖にΔDiHS−6Sが含まれているか、前記第1酵素によって生成される二糖にΔDi−0Sが含まれており、前記第2酵素によって生成される二糖にΔDiHS−0Sが含まれている、請求項2に記載のグリコサミノグリカンの分析方法。 The disaccharide produced by the first enzyme contains ΔDi-4S, and the disaccharide produced by the second enzyme contains ΔDiHS-6S, or the disaccharide produced by the first enzyme contains ΔDiHS-6S. The method for analyzing glycosaminoglycan according to claim 2, wherein ΔDi-0S is contained in the disaccharide, and ΔDiHS-0S is contained in the disaccharide produced by the second enzyme. 生体試料に複数種類のグリコサミノグリカン特異的酵素を添加して、該生体試料に含まれるグリコサミノグリカン由来の複数種類の二糖を生成する第1工程と、
液体クロマトグラフィ質量分析法により、前記複数種類の二糖を分離して分析する第2工程と
を備え、
前記液体クロマトグラフィ質量分析法における液体クロマトグラフィで用いられるカラムが、官能基としてのアダマンチル基が結合された固相担体が充填されたカラムである、グリコサミノグリカンの分析方法。
The first step of adding a plurality of types of glycosaminoglycan-specific enzymes to a biological sample to produce a plurality of types of disaccharides derived from glycosaminoglycan contained in the biological sample.
A second step of separating and analyzing the plurality of types of disaccharides by liquid chromatography mass spectrometry is provided.
A method for analyzing glycosaminoglycan, wherein the column used in liquid chromatography in the liquid chromatography mass spectrometry is a column packed with a solid phase carrier to which an adamantyl group as a functional group is bonded.
前記第2工程において、1個のMRMトランジションで液体クロマトグラフィ質量分析を行った結果、得られたMRMクロマトグラムが3個以上のピークを含むとき、溶出時間が最も短いピークか溶出時間が最も長いピークを用いて二糖を定量する、請求項4に記載のグリコサミノグリカンの分析方法。
In the second step, when the obtained MRM chromatogram contains three or more peaks as a result of liquid chromatography mass spectrometry with one MRM transition, the peak having the shortest elution time or the peak having the longest elution time. The method for analyzing glycosaminoglycan according to claim 4, wherein the disaccharide is quantified using the above.
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