CN110850104A - 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用 - Google Patents

用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用 Download PDF

Info

Publication number
CN110850104A
CN110850104A CN202010039229.1A CN202010039229A CN110850104A CN 110850104 A CN110850104 A CN 110850104A CN 202010039229 A CN202010039229 A CN 202010039229A CN 110850104 A CN110850104 A CN 110850104A
Authority
CN
China
Prior art keywords
ala
gly
leu
protein
thr
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010039229.1A
Other languages
English (en)
Other versions
CN110850104B (zh
Inventor
邹永红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Zhongqi Biotechnology Co Ltd
Original Assignee
Shanghai Zhongqi Biotechnology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Zhongqi Biotechnology Co Ltd filed Critical Shanghai Zhongqi Biotechnology Co Ltd
Priority to CN202010304884.5A priority Critical patent/CN111471096B/zh
Priority to CN202010039229.1A priority patent/CN110850104B/zh
Priority to CN202010304456.2A priority patent/CN111471095B/zh
Priority to CN202010304444.XA priority patent/CN111426850B/zh
Publication of CN110850104A publication Critical patent/CN110850104A/zh
Priority to PCT/CN2020/085224 priority patent/WO2021142963A1/zh
Priority to EP20913385.9A priority patent/EP4071479A4/en
Priority to JP2021560278A priority patent/JP7229592B2/ja
Application granted granted Critical
Publication of CN110850104B publication Critical patent/CN110850104B/zh
Priority to US17/459,780 priority patent/US20210396769A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/68Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
    • G01N33/6893Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids related to diseases not provided for elsewhere
    • G01N33/6896Neurological disorders, e.g. Alzheimer's disease
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/68Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
    • G01N33/6893Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids related to diseases not provided for elsewhere
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • C07K14/4701Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
    • C07K14/4702Regulators; Modulating activity
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • C07K14/4701Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
    • C07K14/4711Alzheimer's disease; Amyloid plaque core protein
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/46Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates
    • C07K14/47Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals
    • C07K14/4701Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from vertebrates from mammals not used
    • C07K14/4738Cell cycle regulated proteins, e.g. cyclin, CDC, INK-CCR
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/705Receptors; Cell surface antigens; Cell surface determinants
    • C07K14/70503Immunoglobulin superfamily
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/0004Oxidoreductases (1.)
    • C12N9/0071Oxidoreductases (1.) acting on paired donors with incorporation of molecular oxygen (1.14)
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12NMICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14Hydrolases (3)
    • C12N9/78Hydrolases (3) acting on carbon to nitrogen bonds other than peptide bonds (3.5)
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12YENZYMES
    • C12Y114/00Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14)
    • C12Y114/11Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14) with 2-oxoglutarate as one donor, and incorporation of one atom each of oxygen into both donors (1.14.11)
    • C12Y114/11027[Histone H3]-lysine-36 demethylase (1.14.11.27)
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12YENZYMES
    • C12Y305/00Hydrolases acting on carbon-nitrogen bonds, other than peptide bonds (3.5)
    • C12Y305/04Hydrolases acting on carbon-nitrogen bonds, other than peptide bonds (3.5) in cyclic amidines (3.5.4)
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/531Production of immunochemical test materials
    • G01N33/532Production of labelled immunochemicals
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/564Immunoassay; Biospecific binding assay; Materials therefor for pre-existing immune complex or autoimmune disease, i.e. systemic lupus erythematosus, rheumatoid arthritis, multiple sclerosis, rheumatoid factors or complement components C1-C9
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2800/00Detection or diagnosis of diseases
    • G01N2800/28Neurological disorders
    • G01N2800/2814Dementia; Cognitive disorders
    • G01N2800/2821Alzheimer
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2800/00Detection or diagnosis of diseases
    • G01N2800/52Predicting or monitoring the response to treatment, e.g. for selection of therapy based on assay results in personalised medicine; Prognosis
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2800/00Detection or diagnosis of diseases
    • G01N2800/54Determining the risk of relapse
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2800/00Detection or diagnosis of diseases
    • G01N2800/56Staging of a disease; Further complications associated with the disease

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Immunology (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Hematology (AREA)
  • Genetics & Genomics (AREA)
  • Zoology (AREA)
  • Urology & Nephrology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Cell Biology (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Wood Science & Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Food Science & Technology (AREA)
  • Toxicology (AREA)
  • Biophysics (AREA)
  • Gastroenterology & Hepatology (AREA)
  • General Engineering & Computer Science (AREA)
  • Neurology (AREA)
  • Neurosurgery (AREA)
  • Rheumatology (AREA)
  • Rehabilitation Therapy (AREA)
  • Peptides Or Proteins (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

本发明属于生物检测领域,具体涉及一种用于检测人血清样本中阿尔茨海默症自身抗体的蛋白抗原组合及其应用。所采用的技术方案为:所述抗原组合至少包括两种下述蛋白的蛋白片段:MAPT、ADARB1、HSP60、P21、DAG、DNAJC8、RAGE、ASXL1、JMJD2D。基于上述抗原组合物,可以制备用于诊断、尤其是早期诊断阿尔茨海默症或其相关风险的试剂盒。使用本发明提供的抗原组合物,可针对性地快速、准确诊断出早期阿尔茨海默症,具有重要的现实意义。

Description

用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用
技术领域
本发明属于生物检测领域,具体涉及一种用于检测人血清样本中阿尔茨海默症自身抗体的蛋白抗原组合及其应用。
背景技术
阿尔茨海默症(Alzheimer's disease,简称AD)是以记忆和认知功能障碍为主要特征的进行性神经变性疾病,多发于老年群体,病程缓慢且不可逆。按照认知功能障碍的发展,可以将阿尔茨海默症分成早、中、晚期。在早期,患者没有明显的症状,多数只表现出健忘、焦虑,因此难以察觉或确诊;中期则会出现混乱性症状,性格、脾性都会发生改变,记忆力也出现混乱;到后期,患者完全表现为痴呆,没有自理的生活能力,最终多继发多种疾病而死亡。
目前对阿尔茨海默症的诊断方式包括如下几种:1、出现早期和显著的情景记忆障碍;2、颞中回萎缩;3、异常的脑脊液生物标记,包括β淀粉样蛋白1-42(Aβ1-42)浓度降低,总Tau蛋白浓度升高,磷酸化Tau蛋白浓度升高,或此三者的组合;4、PET功能神经影像的特异性成像,双侧颞、顶叶葡萄糖代谢率减低;5、直系亲属中有明确的AD相关的常染色体显性突变。然而,由于早期症状不明显、中期与其他疾病难以区分等问题,阿尔茨海默症的诊断尚存在较为显著的漏诊、误诊问题,因此急需AD诊断或分期的有效工具。
自身抗体是由个体免疫系统产生的、针对个体自身蛋白抗原的抗体。正常情况下,免疫系统响应体内的外源性蛋白或物质而产生抗体,但有时也会识别机体的一种或多种内源性组分,导致产生自身抗体。已经有大量证据证实,血清中存在多种自身抗体参与神经性疾病和综合症。就阿尔茨海默症而言,有许多文献报道了患者具有高滴度的针对非脑和脑相关靶的自身抗体,包括结合神经元的自身抗体。
血清中抗体的检测已经是一种很成熟的技术,这使得阿尔茨海默症自身抗体的精确检测成为可能,进而可以以血清中阿尔茨海默症自身抗体作为检测靶标,实现诊断目的。例如,中国专利申请公布号CN103154736A公开了一系列蛋白,该文献提出,这些蛋白潜在地可用作结合阿尔茨海默症自身抗体的抗原,因此可用作阿尔茨海默症的诊断性指示剂。
然而,CN103154736A中公开的蛋白抗原的数量极其庞杂,仍需要从中选择出可以组合使用的蛋白,作为蛋白抗原组合以高特异性和灵敏度检测受试者血清中可能存在的阿尔茨海默症自身抗体,以提供切实可行的阿尔茨海默症诊断或分期手段。况且,即使就单个蛋白抗原而言,蛋白全长与可能存在的对应的阿尔茨海默症自身抗体的结合作用可能很弱,导致检测效果差,进而检测失效、甚至误诊。因此,无论是单独使用还是组合使用,筛选出特定蛋白抗原组合、或者筛选出蛋白中的特定区域或片段以有效结合、检测对应的自身抗体,是至关重要的。
发明内容
本发明的目的是提供一种用于检测人血清样本中阿尔茨海默症自身抗体的蛋白抗原组合及其应用。
为实现上述发明目的,本发明所采用的技术方案是:一种抗原组合,所述抗原组合至少包括两种选自下述蛋白的蛋白片段:MAPT、ADARB1、HSP60、P21、DAG、DNAJC8、RAGE、ASXL1、JMJD2D。
优选的,所述抗原组合中,所述蛋白片段中至少包括9个氨基酸。
优选的,选用蛋白片段或选用蛋白片段与全蛋白组合时,所述蛋白片段或全蛋白的序列选自如下序列之一或其组合:
所述MAPT蛋白片段序列如SEQ ID NO.1所示;
所述ADARB1蛋白片段序列如SEQ ID NO.2所示;
所述HSP60全蛋白序列如SEQ ID NO.3所示;
所述P21蛋白片段序列如SEQ ID NO.4所示;
所述DAG全蛋白序列如SEQ ID NO.5所示;
所述DNAJC8蛋白片段序列如SEQ ID NO.6所示;
所述RAGE蛋白片段序列如SEQ ID NO.7所示;
所述ASXL1蛋白片段序列如SEQ ID NO.8所示;
所述JMJD2D蛋白片段序列如SEQ ID NO.9所示。
优选的,同时包括MAPT蛋白片段、ADARB1蛋白片段、HSP60全蛋白。
优选的,同时包括DNAJC8蛋白片段、RAGE蛋白片段、ASXL1蛋白片段。
优选的,同时包括JMJD2D蛋白片段、P21蛋白片段、DAG全蛋白。
优选的,同时包括MAPT蛋白片段、HSP60全蛋白、DNAJC8蛋白片段;或;
同时包括ADARB1蛋白片段、RAGE蛋白片段、ASXL1蛋白片段;或;
同时包括HSP60全蛋白、RAGE蛋白片段、P21蛋白片段。
相应的,利用所述抗原组合制备的检测阿尔茨海默症的试剂盒。
优选的,所述试剂盒所用样本为全血或血清。
本发明具有以下有益效果:
本发明提供了一种用于检测阿尔茨海默症自身抗体的蛋白抗原组合物,其中所涉及的蛋白抗原或其片段可利用人工合成的方法制得。例如,合成蛋白抗原或其片段的编码DNA,以合成DNA为模板,设计引物,通过PCR、酶切、连接等分子克隆手段,将所述蛋白抗原或其片段的基因片段克隆到表达质粒上。同时,还可选择性地在蛋白抗原或其片段的N-端增加HIS、c-myc等标签。
本发明提供的抗原组合具有下述用途:
(1)测试来自受试者的生物学样品中针对上述抗原组合的自身抗体的存在或存在水平,从而判断所述受试者是否患有阿尔兹海默症;预测所述受试者是否具有罹患阿尔兹海默症的风险;评估所述受试者所患有的阿尔兹海默症的进展;或者判断所述受试者是否具有阿尔兹海默症的复发风险。其中,所述生物学样品可以是血清、血浆、全血、唾液、口腔粘膜拭子、尿液、淋巴液、脑脊液等等。根据具体情况,所述生物学样品可经提取、稀释、富集等手段进行预处理。使用方法多样、简便易操作。
在将本发明提供的抗原组合用于上述测试时,通过使所述抗原组合中的蛋白或其片段与可能存在的对应自身抗体发生结合或相互作用,来测试该自身抗体的存在或存在水平。
(2)本发明提供的蛋白抗原组合还可用于制备阿尔茨海默症自身抗体检测试剂或阿尔茨海默症诊断试剂。应当理解的,所述蛋白抗原组合还可用于制备阿尔茨海默症自身抗体检测试剂盒,所述试剂盒可以参照本发明实施例中使用所述蛋白抗原组合进行阿尔茨海默症自身抗体检测时的方法和试剂制备,也可根据需要进行相应调整。
综上,本发明提供了一种蛋白抗原组合,其可用于阿尔兹海默症的检测或诊断,尤其适用于早期检测或诊断;还可用于阿尔兹海默症的患病风险预测;并可根据需要进一步制备为相关试剂或试剂盒。
具体实施方式
下面结合具体实施例对本申请进行进一步阐释。如无特殊说明,下述实施例中所使用的实验方法均为常规方法;所用的材料、试剂等均可从商业途径得到;所获得的数据均为进行至少3次重复后获得的平均值,且各重复获得的均为有效数据。
实施例一:抗原的重组载体构建、表达和纯化
1、抗原的选择。选择115种与阿尔茨海默症高度相关的抗原蛋白进行构建、表达和纯化。为节省文章篇幅,本文中只体现其中具有代表性的其中50,其分别的数据库ID具体如表1所示。
表1 待测蛋白的数据库ID对应表
Figure 498257DEST_PATH_IMAGE001
2、抗原重组载体的构建和表达。从表1的50种蛋白中筛选出目标蛋白抗原。以人类cDNA文库(购自Invitrogen公司)或者全基因合成DNA为模板,分别设计引物,通过PCR、酶切、连接等分子克隆手段,将所述蛋白的全长基因克隆到pET28质粒上。同时,在蛋白N-端增加HIS、c-myc等标签,形成融合蛋白。将得到的重组表达载体通过DNA测序鉴定,确认包含正确的蛋白基因片段。需要说明的是,添加的标签只是方便识别和提取蛋白,并未对蛋白作为抗原时的功能产生决定性影响,使用时,不添加标签或根据需要添加其它标签均可。
将上述包含蛋白基因片段的重组质粒转化至大肠杆菌BL21(DE3)感受态细胞中,挑取克隆接种至LB培养基中,37℃摇床培养。当菌体密度达到OD600约为0.8时,降温至16℃,在每个LB培养基中加入0.1mM异丙基硫代-β-D-半乳糖苷(IPTG),诱导表达过夜,获得菌体。
3、抗原的纯化。离心收集诱导表达的所述菌体,用PBS漂洗两遍。用裂解液(每g菌体加5~10ml裂解液)重悬并分散菌体,冰浴,超声破碎菌体(超声功率200W,破碎5S,休息5S)。破碎后13000rpm,10℃,离心20分钟,取上清,经Ni柱亲和层析和分子筛层析两步纯化后,采用SDS-PAGE电泳分析,确认蛋白的分子量、纯度,用Bradford法测定浓度后,保存在-80℃备用。即获得纯化后的待测蛋白。
实施例二:从待测蛋白中筛选获得候选抗原
1、本实施例中使用的溶液和试剂如下:
(1)包被缓冲液为PBS缓冲液,pH=7.4。其制备方法为:准确称取3.58g Na2HPO4·12H2O、0.23g KH2PO4·2H2O、0.2g KCl、8.0g NaCl,溶解于水中,清水定容至1L。
(2)封闭液/样本稀释液/抗体稀释液:将10g BSA(牛血清白蛋白)溶解于包被缓冲液中,清水定容至1L。
(3)洗涤液:现配现用。使用前在包被缓冲液中加入0.5% Tween20(V/V),pH=7.4。
(4)TMB显色剂,购自KPL公司。
(5)终止液:1M盐酸。
2、固相包被待测蛋白。用包被缓冲液将实施例一获得的纯化后的待测蛋白稀释至5μg/ml,加至96孔板,每孔50μl,4℃包被过夜。次日倒掉溶液,甩干,用洗涤液洗三次,每次每孔200μl。然后每孔加入200μl封闭液,室温孵育1h后,将封闭液倒掉,甩干,再用洗涤液洗三次,每次每孔200μl,并再次甩干;获得位于96孔板中的固相包被的抗原。
3、加入待测样本。将待测人血清用样本稀释液稀释100倍后,加入所述含待测蛋白的96孔板,每孔加稀释后的待测样本50μl。随后将96孔板置于微孔板振荡仪上,室温振荡孵育1h;甩干,用洗涤液洗三次,每次每孔200μl,并再次甩干。
4、加入酶标二抗。将1.0mg/ml辣根过氧化物酶标记的重组羊抗人免疫球蛋白G抗体(购自Jackson ImmunoResearch Inc.)用抗体稀释液稀释20000倍后,加入步骤3处理后的96孔板中,每孔加50μl。随后将96孔板置于微孔板振荡仪上,室温振荡孵育0.5h,将板甩干,用洗涤液洗三次,每次每孔200μl,并再次甩干。
5、显色反应及光密度值读数。在步骤4处理后的96孔板中,每孔加50μl TMB显色剂,振荡15s,室温下避光反应15min,再加入50μl终止液;然后用酶标仪读取450nm波长的吸收值,获得每个待测样本的检测信号(S)。
6、敏感性和特异性分析。分别取180例阳性样本(确诊为阿尔兹海默症患者的血清)和180例阴性样本(健康受试者血清),按上述方法(450nm波长的吸收值)测定每个样本的检测信号(S)。以阴性样本为阴性参考样本,计算所有阴性参考样本检测信号(S)的平均值(M)及标准差(SD),以M+3SD为Cut Off值。将检测信号(S)≥Cut Off值的样本(S≥M+3SD)定为阳性;将检测信号(S)<Cut Off值的样本(S<M+3SD)定为阴性。
基于样本阳性和阴性结果计算特异性和敏感性。其中,特异性是指健康受试者样本被正确地判定为阴性的比例,即在阴性样本中被正确地判定为阴性的数量除以阴性样本总数。敏感性是指阿尔兹海默症患者样本被正确地判定为阳性的比例,即在阳性样本中被判定为阳性的数量除以阳性样本总数。通过计算得出使用每个被测蛋白作为抗原进行样本检测时的敏感性和特异性,结果如表2所示。
表2 各被测蛋白作为抗原的敏感性和特异性展示表
Figure 415397DEST_PATH_IMAGE002
7、从上述各被测蛋白中选择筛选出敏感性≥20%且特异性≥75%的蛋白作为候选抗原。筛选结果如表3所示。
表3 从被测蛋白中筛选出的候选抗原展示表
实施例三:候选抗原的活性位点筛选
1、对实施例二获得的所述候选抗原的氨基酸序列及其结构进行分析,经大量前期试验后,从各所述候选抗原中选择不同的序列片段和抗原表位。所选择的序列片段或全长如表4所示。
表4 各候选抗原上截取的序列片段对应表
Figure 777294DEST_PATH_IMAGE004
2、按照实施例一的方法,对表4中各蛋白片段进行表达载体构建、表达和纯化,得到构建后的蛋白片段,再按实施例二的方法检测各构建后的蛋白片段作为抗原时的敏感性和特异性。与实施例一相同的是,此处虽然也在各蛋白片段中添加了一些标签,但添加标签的目的主要在于便于提取和识别,并未对蛋白片段作为抗原的功能产生实质性影响。使用添加标签前后的蛋白均可实现发明目的,实际使用时,本领域技术人员可以根据需要选择是否添加标签、及添加标签的种类。因此,本发明全文只提供了添加标签前的蛋白序列。测试结果如表5所示。
表5 各候选抗原截取片段优化后的敏感性和特异性对照表
Figure 351812DEST_PATH_IMAGE006
3、根据表5结果可知,对于某些蛋白而言,与使用全蛋白相比,截取特定氨基酸序列区域并进行相应优化后获得的蛋白片段具有更优的检测效果;而对于某些抗原而言,全蛋白的检测效果优于其片段。这可能是因为,在与阿尔兹海默症相关位点结合或识别过程中,某些全蛋白中的部分蛋白片段发挥了抑制作用。
根据表5的结果,进一步筛选出9种蛋白全长或其片段,入选的蛋白全长或其片段的敏感性在33%以上,且特异性在88%以上;作为区分阿尔兹海默症患者和健康受试者的候选抗原。筛选结果如表6所示。
表6 各候选抗原的敏感性和特异性对照表
Figure 805796DEST_PATH_IMAGE007
实施例四:候选抗原的检测效果展示
1、根据表6的筛选结果,从所述候选蛋白抗原中选择形成不同的抗原组合。并基于候选组1~8的候选蛋白片段对应的全蛋白,设置对应的全蛋白组合,分别为对照组1~8;根据专利CN 109738653 A中表5的组合5、6分别设置对照组9、10。具体如表7所示。需要说明的是,发明人并非只进行了表7的组合试验;发明人经过大量前期试验后才获得表7中所示的各抗原组合,因篇幅限制,只选取了部分效果较优的组合。
Figure 4696DEST_PATH_IMAGE008
2、按简易精神状态检查表(Mini-Mental State Examination,MMSE)-Folstein版,对阿尔兹海默症患者和健康受试者进行评分,分数27~30的测试者为正常人,分数21~26的测试者为轻度(早期)患者,分数10~20的测试者为中度(中期)患者,分数0~9的测试者为重度(晚期)患者。
根据MMSE评分,取阿尔兹海默症患者早期180例,中期90例,晚期90例作为检测样本;取180例MMSE评分正常的健康受试者作为健康受试者的样本。参照实施例二的检测方法,分别使用表7中各组抗原组合对上述各样本进行敏感性和特异性检测(需要说明的是,对照组中所用各蛋白为未经切割的全蛋白)。本实施例中的敏感性和特异性具体为总体特异性、总体敏感性、早期敏感性、中期敏感性和晚期敏感性。
其中,早期敏感性、中期敏感性和晚期敏感性对阳性和阴性的定义方法参照实施例二。
早期敏感性是指180例早期阿尔兹海默症患者样本被该组合正确地判定为阳性的比例,即在早期阿尔兹海默症患者样本中被判定为阳性的数量除以早期阿尔兹海默症患者样本总数;中期敏感性是指90例中期阿尔兹海默症患者样本被正确地判定为阳性的比例,即在中期阿尔兹海默症患者样本中被判定为阳性的数量除以中期阿尔兹海默症患者样本总数;晚期敏感性是指90例晚期阿尔兹海默症患者样本被正确地判定为阳性的比例,即在晚期阿尔兹海默症患者样本中被判定为阳性的数量除以晚期阿尔兹海默症患者样本总数。总体敏感性是指在180例早期、90例中期、90例晚期阿尔兹海默症患者样本总共被正确地判定为阳性的比例,即在所有阿尔兹海默症患者样本中被判定为阳性的数量除以所有阿尔兹海默症患者样本总数;总体特异性是指180例健康受试者样本被正确地判定为阴性的比例,即在180例健康受试者样本中,健康受试者样本中被判定为阴性的数量除以健康受试者样本总数。
各组抗原组合检测获得结果如表8所示。
表8 各组抗原组合检测结果对照表
Figure 611258DEST_PATH_IMAGE009
从表8可以看出,候选组1~8具有更高的敏感性和特异性;总体敏感性都大于85%,总体特异性都大于88%。同时,与中期和晚期样本相比,使用本发明提供的抗原组合在检测早期样本时具有更高的敏感性。因此,本发明为阿尔茨海默病的诊断、尤其是早期诊断提供了更为精确的检测方法。
在后期应用时,还可根据需要,从本发明提供的候选抗原或抗原组合中选择一种或多种,制作成AD诊断试剂盒。
序列表
<110> 上海众启生物科技有限公司
<120> 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用
<160> 9
<170> SIPOSequenceListing 1.0
<210> 1
<211> 257
<212> PRT
<213> MAPT[502-758]
<400> 1
Ser Gly Gly Pro Pro Leu Ser Gly Ala Ala Ser Gly Thr Ser Ser Pro
1 5 10 15
Gly Ser Pro Gly Thr Pro Gly Ser Ala Ser Ala Thr Pro Ser Leu Pro
20 25 30
Thr Pro Pro Thr Ala Gly Pro Leu Leu Val Ala Val Val Ala Thr Pro
35 40 45
Pro Leu Ser Pro Ser Ser Ala Leu Ser Ala Leu Gly Thr Ala Pro Val
50 55 60
Pro Met Pro Ala Leu Leu Ala Val Leu Ser Leu Ile Gly Ser Thr Gly
65 70 75 80
Ala Leu Leu His Gly Pro Gly Gly Gly Leu Val Gly Ile Ile Ala Leu
85 90 95
Leu Leu Ala Leu Ser Ala Val Gly Ser Leu Cys Gly Ser Leu Ala Ala
100 105 110
Ile Leu His Val Pro Gly Gly Gly Ser Val Gly Ile Val Thr Leu Pro
115 120 125
Val Ala Leu Ser Leu Val Thr Ser Leu Cys Gly Ser Leu Gly Ala Ile
130 135 140
His His Leu Pro Gly Gly Gly Gly Val Gly Val Leu Ser Gly Leu Leu
145 150 155 160
Ala Pro Leu Ala Ala Val Gly Ser Leu Ile Gly Ser Leu Ala Ala Ile
165 170 175
Thr His Val Pro Gly Gly Gly Ala Leu Leu Ile Gly Thr His Leu Leu
180 185 190
Thr Pro Ala Gly Ala Ala Leu Ala Leu Thr Ala His Gly Ala Gly Ile
195 200 205
Val Thr Leu Ser Pro Val Val Ser Gly Ala Thr Ser Pro Ala His Leu
210 215 220
Ser Ala Val Ser Ser Thr Gly Ser Ile Ala Met Val Ala Ser Pro Gly
225 230 235 240
Leu Ala Thr Leu Ala Ala Gly Val Ser Ala Ser Leu Ala Leu Gly Gly
245 250 255
Leu
<210> 2
<211> 64
<212> PRT
<213> ADARB1[678-741]
<400> 2
Ala Val His Gly Leu Val Pro Ser His Leu Leu Ala Ser Leu Ile Thr
1 5 10 15
Leu Pro Ala Val Thr His Gly Ser Leu Leu Ala Ala Leu Gly Thr Gly
20 25 30
Ala Ala Leu Ala Ala Leu Pro Thr Ala Pro Ile Leu Ala Gly Leu Gly
35 40 45
Ala Thr Val Gly Leu Pro Thr Gly Gly Ala Gly Pro Ser Leu Thr Pro
50 55 60
<210> 3
<211> 573
<212> PRT
<213> HSP60[1-573]
<400> 3
Met Leu Ala Leu Pro Thr Val Pro Ala Gly Met Ala Pro Val Ser Ala
1 5 10 15
Val Leu Ala Pro His Leu Thr Ala Ala Thr Ala Leu Ala Val Leu Pro
20 25 30
Gly Ala Ala Ala Ala Ala Leu Met Leu Gly Gly Val Ala Leu Leu Ala
35 40 45
Ala Ala Val Ala Val Thr Met Gly Pro Leu Gly Ala Thr Val Ile Ile
50 55 60
Gly Gly Ser Thr Gly Ser Pro Leu Val Thr Leu Ala Gly Val Thr Val
65 70 75 80
Ala Leu Ser Ile Ala Leu Leu Ala Leu Thr Leu Ala Ile Gly Ala Leu
85 90 95
Leu Val Gly Ala Val Ala Ala Ala Thr Ala Gly Gly Ala Gly Ala Gly
100 105 110
Thr Thr Thr Ala Thr Val Leu Ala Ala Ser Ile Ala Leu Gly Gly Pro
115 120 125
Gly Leu Ile Ser Leu Gly Ala Ala Pro Val Gly Ile Ala Ala Gly Val
130 135 140
Met Leu Ala Val Ala Ala Val Ile Ala Gly Leu Leu Leu Gly Ser Leu
145 150 155 160
Pro Val Thr Thr Pro Gly Gly Ile Ala Gly Val Ala Thr Ile Ser Ala
165 170 175
Ala Gly Ala Leu Gly Ile Gly Ala Ile Ile Ser Ala Ala Met Leu Leu
180 185 190
Val Gly Ala Leu Gly Val Ile Thr Val Leu Ala Gly Leu Thr Leu Ala
195 200 205
Ala Gly Leu Gly Ile Ile Gly Gly Met Leu Pro Ala Ala Gly Thr Ile
210 215 220
Ser Pro Thr Pro Ile Ala Thr Ser Leu Gly Gly Leu Cys Gly Pro Gly
225 230 235 240
Ala Ala Thr Val Leu Leu Ser Gly Leu Leu Ile Ser Ser Ile Gly Ser
245 250 255
Ile Val Pro Ala Leu Gly Ile Ala Ala Ala His Ala Leu Pro Leu Val
260 265 270
Ile Ile Ala Gly Ala Val Ala Gly Gly Ala Leu Ser Thr Leu Val Leu
275 280 285
Ala Ala Leu Leu Val Gly Leu Gly Val Val Ala Val Leu Ala Pro Gly
290 295 300
Pro Gly Ala Ala Ala Leu Ala Gly Leu Leu Ala Met Ala Ile Ala Thr
305 310 315 320
Gly Gly Ala Val Pro Gly Gly Gly Gly Leu Thr Leu Ala Leu Gly Ala
325 330 335
Val Gly Pro His Ala Leu Gly Leu Val Gly Gly Val Ile Val Thr Leu
340 345 350
Ala Ala Ala Met Leu Leu Leu Gly Leu Gly Ala Leu Ala Gly Ile Gly
355 360 365
Leu Ala Ile Gly Gly Ile Ile Gly Gly Leu Ala Val Thr Thr Ser Gly
370 375 380
Thr Gly Leu Gly Leu Leu Ala Gly Ala Leu Ala Leu Leu Ser Ala Gly
385 390 395 400
Val Ala Val Leu Leu Val Gly Gly Thr Ser Ala Val Gly Val Ala Gly
405 410 415
Leu Leu Ala Ala Val Thr Ala Ala Leu Ala Ala Thr Ala Ala Ala Val
420 425 430
Gly Gly Gly Ile Val Leu Gly Gly Gly Cys Ala Leu Leu Ala Cys Ile
435 440 445
Pro Ala Leu Ala Ser Leu Thr Pro Ala Ala Gly Ala Gly Leu Ile Gly
450 455 460
Ile Gly Ile Ile Leu Ala Thr Leu Leu Ile Pro Ala Met Thr Ile Ala
465 470 475 480
Leu Ala Ala Gly Val Gly Gly Ser Leu Ile Val Gly Leu Ile Met Gly
485 490 495
Ser Ser Ser Gly Val Gly Thr Ala Ala Met Ala Gly Ala Pro Val Ala
500 505 510
Met Val Gly Leu Gly Ile Ile Ala Pro Thr Leu Val Val Ala Thr Ala
515 520 525
Leu Leu Ala Ala Ala Gly Val Ala Ser Leu Leu Thr Thr Ala Gly Val
530 535 540
Val Val Thr Gly Ile Pro Leu Gly Gly Leu Ala Pro Gly Met Gly Ala
545 550 555 560
Met Gly Gly Met Gly Gly Gly Met Gly Gly Gly Met Pro
565 570
<210> 4
<211> 163
<212> PRT
<213> P21[2-164]
<400> 4
Ser Gly Pro Ala Gly Ala Val Ala Gly Ala Pro Cys Gly Ser Leu Ala
1 5 10 15
Cys Ala Ala Leu Pro Gly Pro Val Ala Ser Gly Gly Leu Ser Ala Ala
20 25 30
Cys Ala Ala Leu Met Ala Gly Cys Ile Gly Gly Ala Ala Gly Ala Thr
35 40 45
Ala Pro Ala Pro Val Thr Gly Thr Pro Leu Gly Gly Ala Pro Ala Thr
50 55 60
Gly Ala Val Ala Gly Leu Gly Leu Pro Leu Leu Thr Leu Pro Thr Gly
65 70 75 80
Pro Ala Ala Gly Ala Ala Gly Leu Gly Gly Gly Ala Ala Pro Gly Thr
85 90 95
Ser Pro Ala Leu Leu Gly Gly Thr Ala Gly Gly Ala His Val Ala Leu
100 105 110
Ser Leu Ser Cys Thr Leu Val Pro Ala Ser Gly Gly Gly Ala Gly Gly
115 120 125
Ser Pro Gly Gly Pro Gly Ala Ser Gly Gly Ala Leu Ala Ala Gly Thr
130 135 140
Ser Met Thr Ala Pro Thr His Ser Leu Ala Ala Leu Ile Pro Ser Leu
145 150 155 160
Ala Leu Pro
<210> 5
<211> 9
<212> PRT
<213> DAG[1-9]
<400> 5
Cys Ala Ala Gly Ala Leu Gly Leu Cys
1 5
<210> 6
<211> 140
<212> PRT
<213> DNAJC8[114-253]
<400> 6
Gly Gly Leu Leu Ala Ala Leu Ala Val Ile Gly Ala Gly Leu Gly Thr
1 5 10 15
Val Gly His Thr Val Leu Gly Ala Leu Leu Gly Leu Leu Leu Gly Gly
20 25 30
Leu Pro Thr Ile Val Gly Gly Ala Ala Pro Gly Leu Pro Leu Gly Ala
35 40 45
Val Thr Leu Gly Thr Met Leu Leu Pro Ala Gly Leu Gly Ile Leu Ala
50 55 60
Leu Gly Ala Gly Ala Leu Gly Met His Gly Ala Leu Ala Gly Ala Gly
65 70 75 80
Gly Gly Ile Gly Ala Gly Gly Leu Ala Leu Ala Gly Ala Gly Thr Gly
85 90 95
Leu Ala Pro Gly Gly Ser Ala Ala Gly Ala Val Ala Ser Thr Ala Ala
100 105 110
Pro Gly Ala Ala Thr Leu Gly Leu Leu Gly Leu Leu Ala Ala Thr Pro
115 120 125
Leu Ala Pro Pro Leu Val Leu Met Gly Gly Ala Gly
130 135 140
<210> 7
<211> 32
<212> PRT
<213> RAGE[23-54]
<400> 7
Ala Gly Ala Ile Thr Ala Ala Ile Gly Gly Pro Leu Val Leu Leu Cys
1 5 10 15
Leu Gly Ala Pro Leu Leu Pro Pro Gly Ala Leu Gly Thr Leu Leu Ala
20 25 30
<210> 8
<211> 84
<212> PRT
<213> ASXL1[1-84]
<400> 8
Met Leu Ala Leu Gly Leu Leu Leu Leu Gly Ala Thr Thr Ala Gly Ala
1 5 10 15
Ala Ala Leu Val Leu Gly Ala Thr Ser Ala Ala Pro Met Thr Pro Leu
20 25 30
Gly Ile Leu Gly Val Ile Gly Ala Gly Gly Leu Leu Gly Met Ser Gly
35 40 45
Thr Ser Pro Leu Ala Cys Leu Ala Ala Met Leu His Ser Ala Ser Ala
50 55 60
Gly Gly Gly Gly Leu Pro Thr Leu Leu Pro Gly Ala Ile Ser Leu Pro
65 70 75 80
Thr Leu Leu Ala
<210> 9
<211> 160
<212> PRT
<213> JMJD2D[1-160]
<400> 9
Met Gly Thr Met Leu Ser Leu Ala Ala Cys Ala Gly Ala Pro Ala Cys
1 5 10 15
Ala Ile Met Ile Pro His Pro Thr Leu Gly Gly Pro Ala Ala Pro Ala
20 25 30
Leu Thr Ile Ala Thr Met Gly Ser Gly Gly Ala His Ala Ala Gly Leu
35 40 45
Ala Leu Ile Ile Pro Pro Leu Gly Thr Leu Ala Ala Gly Thr Thr Ala
50 55 60
Ala Ile Ser Gly Ile Leu Ile Ala Thr Pro Leu Gly Gly Val Ala Ser
65 70 75 80
Gly Ala Ala Gly Val Pro Thr Gly Thr His Leu Leu Leu Leu Ala Met
85 90 95
Thr Val Gly Gly Thr Ala His Leu Ala Ala Ser Leu Leu Thr Gly Thr
100 105 110
Pro Pro His Gly Ala Pro Gly Ala Leu Gly Ala Leu Thr Thr Leu Ala
115 120 125
Ala Ile Thr Ala Ser Pro Ile Thr Gly Ala Ala Ile Ser Gly Ser Leu
130 135 140
Pro Ala Gly Ala Thr Leu Gly Thr Ala Leu Gly His Leu Gly Thr Ile
145 150 155 160

Claims (9)

1.一种抗原组合,其特征在于:所述抗原组合至少包括两种选自下述蛋白的蛋白片段:MAPT、ADARB1、HSP60、P21、DAG、DNAJC8、RAGE、ASXL1、JMJD2D。
2.根据权利要求1所述的一种抗原组合,其特征在于:所述抗原组合中,所述蛋白片段中至少包括9个氨基酸。
3.根据权利要求1或2所述的一种抗原组合,其特征在于:选用蛋白片段或选用蛋白片段与全蛋白组合时,所述蛋白片段或全蛋白的序列选自如下序列之一或其组合:
所述MAPT蛋白片段序列如SEQ ID NO.1所示;
所述ADARB1蛋白片段序列如SEQ ID NO.2所示;
所述HSP60全蛋白序列如SEQ ID NO.3所示;
所述P21蛋白片段序列如SEQ ID NO.4所示;
所述DAG全蛋白序列如SEQ ID NO.5所示;
所述DNAJC8蛋白片段序列如SEQ ID NO.6所示;
所述RAGE蛋白片段序列如SEQ ID NO.7所示;
所述ASXL1蛋白片段序列如SEQ ID NO.8所示;
所述JMJD2D蛋白片段序列如SEQ ID NO.9所示。
4.根据权利要求3所述的一种抗原组合,其特征在于:同时包括MAPT蛋白片段、ADARB1蛋白片段、HSP60全蛋白。
5.根据权利要求3所述的一种抗原组合,其特征在于:同时包括DNAJC8蛋白片段、RAGE蛋白片段、ASXL1蛋白片段。
6.根据权利要求3所述的一种抗原组合,其特征在于:同时包括JMJD2D蛋白片段、P21蛋白片段、DAG全蛋白。
7.根据权利要求3所述的一种抗原组合,其特征在于:同时包括MAPT蛋白片段、HSP60全蛋白、DNAJC8蛋白片段;或;
同时包括ADARB1蛋白片段、RAGE蛋白片段、ASXL1蛋白片段;或;
同时包括HSP60全蛋白、RAGE蛋白片段、P21蛋白片段。
8.利用权利要求1~7任意一项所述抗原组合制备的检测阿尔茨海默症的试剂盒。
9.根据权利要求8所述的试剂盒,其特征在于:所述试剂盒所用样本为全血或血清。
CN202010039229.1A 2020-01-15 2020-01-15 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用 Active CN110850104B (zh)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CN202010304884.5A CN111471096B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含有adarb1蛋白片段组合物
CN202010039229.1A CN110850104B (zh) 2020-01-15 2020-01-15 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用
CN202010304456.2A CN111471095B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含jmjd2d蛋白片段的组合物
CN202010304444.XA CN111426850B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含dnajc8蛋白片段的组合物
PCT/CN2020/085224 WO2021142963A1 (zh) 2020-01-15 2020-04-17 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用
EP20913385.9A EP4071479A4 (en) 2020-01-15 2020-04-17 PROTEIN-ANTIGEN COMBINATION FOR DETERMINING THE AUTOANTIBODIES OF ALZHEIMER'S DISEASE AND APPLICATION OF THE PROTEIN-ANTIGEN COMBINATION
JP2021560278A JP7229592B2 (ja) 2020-01-15 2020-04-17 抗原の組み合わせ、アルツハイマー病の検出への抗原の組み合わせの使用、アルツハイマー病を検出するキット及びアルツハイマー病の検出用抗原
US17/459,780 US20210396769A1 (en) 2020-01-15 2021-08-27 Protein antigen combination, detection method and testing kit using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010039229.1A CN110850104B (zh) 2020-01-15 2020-01-15 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用

Related Child Applications (3)

Application Number Title Priority Date Filing Date
CN202010304884.5A Division CN111471096B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含有adarb1蛋白片段组合物
CN202010304456.2A Division CN111471095B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含jmjd2d蛋白片段的组合物
CN202010304444.XA Division CN111426850B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含dnajc8蛋白片段的组合物

Publications (2)

Publication Number Publication Date
CN110850104A true CN110850104A (zh) 2020-02-28
CN110850104B CN110850104B (zh) 2020-06-05

Family

ID=69610704

Family Applications (4)

Application Number Title Priority Date Filing Date
CN202010039229.1A Active CN110850104B (zh) 2020-01-15 2020-01-15 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用
CN202010304444.XA Active CN111426850B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含dnajc8蛋白片段的组合物
CN202010304884.5A Active CN111471096B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含有adarb1蛋白片段组合物
CN202010304456.2A Active CN111471095B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含jmjd2d蛋白片段的组合物

Family Applications After (3)

Application Number Title Priority Date Filing Date
CN202010304444.XA Active CN111426850B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含dnajc8蛋白片段的组合物
CN202010304884.5A Active CN111471096B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含有adarb1蛋白片段组合物
CN202010304456.2A Active CN111471095B (zh) 2020-01-15 2020-01-15 用于阿尔茨海默症自身抗体检测的含jmjd2d蛋白片段的组合物

Country Status (5)

Country Link
US (1) US20210396769A1 (zh)
EP (1) EP4071479A4 (zh)
JP (1) JP7229592B2 (zh)
CN (4) CN110850104B (zh)
WO (1) WO2021142963A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021142963A1 (zh) * 2020-01-15 2021-07-22 上海众启生物科技有限公司 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用
WO2024114615A1 (zh) * 2022-11-29 2024-06-06 上海众启生物科技有限公司 含有serf2的蛋白抗原组合及其应用

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024055378A1 (zh) * 2022-09-13 2024-03-21 北京湃德智健科技有限公司 用于检测阿尔兹海默病自身抗体的蛋白抗原组合及其应用

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103154736A (zh) * 2010-05-13 2013-06-12 新泽西医科和牙科大学 用于检测和诊断神经变性疾病的诊断性自身抗体谱
CN106062563A (zh) * 2014-01-28 2016-10-26 普雷德姆泰克有限公司 用于阿尔兹海默症的早期诊断的生物标志物及方法
CN109342738A (zh) * 2018-11-19 2019-02-15 深圳大学 一组血清差异蛋白组合在制备用于检测阿尔茨海默症的试剂中的应用
CN109738653A (zh) * 2019-01-11 2019-05-10 湖南诺琪生物科技有限公司 用于阿尔茨海默症的检测、诊断或风险预测的抗原蛋白组合以及包含其的试剂盒

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0507598D0 (en) * 2005-04-14 2005-05-18 Trojantec Technologies Ltd Composition
WO2010021755A2 (en) * 2008-08-20 2010-02-25 Oligomerix, Inc. Tau protease compositions and methods
US20120232016A1 (en) * 2011-03-08 2012-09-13 Coleman Paul D Method and system to detect and diagnose alzheimer's disease
US10132817B2 (en) * 2011-07-12 2018-11-20 Rowan University Diagnostic biomarker profiles for the detection and diagnosis of alzheimer's disease
EP3010915B1 (en) * 2013-06-19 2019-05-08 University of Utah Research Foundation Substituted (3-(5-chloro-2-hydroxyphenyl)-1-benzoyl-1h-pyrazole compounds as histone demethylase inhibitors
WO2016168612A1 (en) * 2015-04-15 2016-10-20 Promedior, Inc. Methods for treating myeloproliferative disorders
EP3978930A1 (en) * 2015-12-14 2022-04-06 Rowan University Early-stage alzheimer's disease autoantibody biomarkers, target antigens and diagnostic uses thereof
US11571485B2 (en) * 2016-11-16 2023-02-07 Sanford Burnham Prebys Medical Discovery Institute Peptides and antibodies for detecting changes in alzheimer's disease brain and methods of use thereof
EP3376230A1 (en) * 2017-03-13 2018-09-19 Biocross, S.L. Identification of signatures for neurodegeneration diseases diagnoses
CN110850104B (zh) * 2020-01-15 2020-06-05 上海众启生物科技有限公司 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103154736A (zh) * 2010-05-13 2013-06-12 新泽西医科和牙科大学 用于检测和诊断神经变性疾病的诊断性自身抗体谱
CN106062563A (zh) * 2014-01-28 2016-10-26 普雷德姆泰克有限公司 用于阿尔兹海默症的早期诊断的生物标志物及方法
CN109342738A (zh) * 2018-11-19 2019-02-15 深圳大学 一组血清差异蛋白组合在制备用于检测阿尔茨海默症的试剂中的应用
CN109738653A (zh) * 2019-01-11 2019-05-10 湖南诺琪生物科技有限公司 用于阿尔茨海默症的检测、诊断或风险预测的抗原蛋白组合以及包含其的试剂盒

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AMAN P. MANN ET AL: "Identification of a peptide recognizing cerebrovascular changes in mouse models of Alzheimer’s disease", 《NATURE COMMUNICATIONS》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021142963A1 (zh) * 2020-01-15 2021-07-22 上海众启生物科技有限公司 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用
WO2024114615A1 (zh) * 2022-11-29 2024-06-06 上海众启生物科技有限公司 含有serf2的蛋白抗原组合及其应用

Also Published As

Publication number Publication date
WO2021142963A1 (zh) 2021-07-22
CN111471096B (zh) 2022-02-18
CN111471095A (zh) 2020-07-31
CN110850104B (zh) 2020-06-05
JP7229592B2 (ja) 2023-02-28
CN111426850A (zh) 2020-07-17
CN111471096A (zh) 2020-07-31
CN111426850B (zh) 2021-12-21
JP2022528194A (ja) 2022-06-08
EP4071479A4 (en) 2023-10-25
EP4071479A1 (en) 2022-10-12
US20210396769A1 (en) 2021-12-23
CN111471095B (zh) 2021-12-21

Similar Documents

Publication Publication Date Title
CN110850104B (zh) 用于阿尔兹海默症自身抗体检测的蛋白抗原组合及其应用
CN102308002A (zh) 第一型糖尿病的新型诊断标志物
CN109738653B (zh) 用于阿尔茨海默症的检测、诊断或风险预测的抗原蛋白组合以及包含其的试剂盒
JP5090332B2 (ja) 炎症及び感染症のためのバイオマーカーとしての短鎖srlアルコールデヒドロゲナーゼ(dhrs4)の測定
EP1543331B1 (en) Method of diagnosing alzheimer&#39;s disease
EP2486407B1 (en) A method for diagnosing primary biliary cirrhosis (pbc) using novel autoantigens
JP2008523398A (ja) インスリン抵抗性の標的/マーカーとしてのcd99
US9778250B2 (en) Detecting inclusion body myositis
JP5380303B2 (ja) 高分子アディポネクチン測定法
JP5191544B2 (ja) 皮膚筋炎の検出方法および診断キット
JP5252339B2 (ja) Pad4及び抗pad4抗体の測定方法並びに関節リウマチの検出方法
CN110716050A (zh) 抗原组合在制备用于肺癌相关自身抗体检测的试剂盒中的用途以及相应的试剂盒和检测方法
CN103370620B (zh) 阿尔茨海默病的诊断药和诊断方法
CN102788883B (zh) 一种用于检测抑郁症的试剂盒
CN117538545B (zh) 一种用于阿尔茨海默症检测的蛋白抗原组合及应用
WO2024114615A1 (zh) 含有serf2的蛋白抗原组合及其应用
CN114594273B (zh) 一种脑梗塞生物标记物及其应用
CN107022028B (zh) 特异性抗CitH3单克隆抗体及其酶联免疫吸附试验试剂盒在脓毒症诊断中的应用
DE102006030566B4 (de) Verfahren und Reagenzien zur Diagnose entzündlicher Lebererkrankungen
CN118852397A (zh) 一种用于急性心肌梗死检测的蛋白抗原组合及应用
KR20200077779A (ko) 퇴행성 뇌질환 발병 위험성 예측용 조성물 및 이를 이용한 퇴행성 뇌질환의 발병 위험성 예측 방법
KR20220017101A (ko) 자가면역 뇌염의 진단 방법
CN118580331A (zh) 一种用于主动脉夹层检测的蛋白抗原组合及应用
WO2014177701A1 (en) Process for diagnosing a human subject with diseases affecting the kidneys, or at risk of acquiring diseases affecting the kidneys
CN113597429A (zh) App669-711测定方法及测定用试剂盒

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CB03 Change of inventor or designer information
CB03 Change of inventor or designer information

Inventor after: Shen Lu

Inventor after: Wu Qihui

Inventor after: Yin Kun

Inventor after: Zou Yonghong

Inventor before: Zou Yonghong