CN107918014A - A kind of osteoarthritis marker confirms - Google Patents

Abstract

The invention discloses a kind of confirmation of osteoarthritis marker, 2. 1. clinical samples collection detects the candidate markers expression in 200 OA patients serums, analysis OA markers and the relation of the OA courses of disease using ELISA method；3. establish OA diagnosing models with OA markers, 200 patients serums of blind screening, judge sensitivity, specificity, positive predictive value and the negative predictive value of OA markers diagnosis OA, propose their feasibilities in terms of the clinical practices such as the prevention, early diagnosis, disease course prediction of OA.The confirmation of marker is carried out by crowd's sample, assess the value of these OA candidate markers diagnosis OA and analyze itself and clinical correlation, it is proposed their feasibilities in terms of the clinical practices such as the prevention of OA, early diagnosis, and its meaning in crowd's bony articulation health early warning.

Description

A kind of osteoarthritis marker confirms

Technical field

The present invention relates to genetic transcription group and proteomics field, especially a kind of osteoarthritis marker confirms.

Background technology

Osteoarthritis (osteoarthritis, OA) is also known as degenerative osteoarthropathy, is one of most common joint diseases, It is mainly shown as the pain slowly developed in joint, stiff, enlargement, with joint function disturbance, or even disabled [1-2] occurs.OA Pathogenesis be joint by science of heredity, biology and Mechanics of Machinery event（Such as heredity, metabolic disorder, strain, wound）'s Collective effect, induces cell and matrix changes in morphology, biomethanics, molecules etc., causes articular cartilage thin Born of the same parents, the degraded of extracellular matrix and subchondral bone and synthesis are uneven.Its final result is the softening of cartilage cell, fibrosis, ulcer And lose, after the protective effect of cartilage is lost, subchondral bone hardens, ivory, ultimately results under spur and cartilage The formation of bone cyst.

OA can involve the multiple joints of whole body, its illness rate increases and increases with the age, especially endangers senior health and fitness, and give Society brings heavy burden.The illness rate of OA is up to more than 50% in over-65s crowd at present, and more than 75 years old in crowd, This numerical value can reach 80% or so.The survey data in the U.S. shows that OA causes more than 50 years old male's disablement No. 2 killer, is only second to angiocardiopathy [5].With the world and the acceleration of Chinese society aging of population, OA increasingly into For doctors and patients or even the hot topic of social concerns.

At present, the diagnosis to OA relies primarily on clinical symptoms, imaging data and arthroscopy etc., wherein, after Both have very big value for clear and definite joint part histopathologic change situation.The change of x-ray is evaluation OA progress in iconography Common method, but it still has certain limitation, its specificity and sensitiveness are poor.Studied and sent out by Pathologic specimen Existing, when X lines are acted normally, articular cartilage may also seriously be involved;Once there is the change of X lines, disease in patient Progressive stage [6-7] is often in, the normal function in joint and the quality of life of patient have been subjected to serious, irreversible Influence.Magnetic resonance imaging (MRI) is high to soft tissue resolution, can be imaged from arbitrary face and multi-parameter, multi-sequence im-aging, The change situation of cartilage can be directly displayed, contributes to the early diagnosis of OA, but due to expensive, it is difficult to for a wide range of Disease assessment and generaI investigation.In addition, arthroscope is the best means for evaluating damaged articular cartilage, it is considered as that diagnosis joint is soft The goldstandard of damaged bone, can directly observe swelling and the ulceration situation of hyaline cartilage.But it is invasive due to inspection, and It cannot show the change of cartilage deep layer and subchondral bone matter, its clinical practice is also restrained.Therefore, probe into effective, cheap And minimally invasive detection methods come detect subclinical OA and monitor lesion progress, to early diagnosis and effectively prevention OA have Important meaning.

With the development of molecular biology and the raising of research means, researcher attempts sight being placed on available for clinical pre- Survey and assess the biology blood serum designated object aspect [8-9] of OA.The blood serum designated object of OA, is the molecule thing of joint tissue matrix Matter or segment, they are released into blood in tissue synthesis and the metabolic process decomposed, can be inhaled by enzyme linked immunological Attached method (ELISA) or radioimmunology are measured, and are suitably applied in health examination and Mass screening, and the bone of crowd is closed It is significant to save healthy early warning.Detection at present, analysis and definite disease blood serum marker rely primarily on proteomic techniques, use Proteomic techniques illustrate the mutual of the change of disease marker protein expression level and disease development different phase Relation and its rule, it has also become solve the best approach [10-11] of disease early diagnosis problem.And mass-spectrometric technique is albumen The core of omics technology, the iTRAQ of new development over the past two years（isobaric tags for relative and absolute Quantification, iTRAQ）Mark combines MALDI-TOF MS/MS technologies, is provided for the discovery and identification of disease marker Qualitative, quantitative information [12], are newest in disease marker screening study and most strong means.

Therefore, MALDI-TOF MS/MS scientific discoveries and identification OA marker proteins are combined using iTRAQ marks, is mesh Preceding energy let us is screened from thousands of haemocyanins to be existed in serum really, and can indicate the blood serum designated object of OA Ideal scheme.However, since mass-spectrometric technique has high sensitivity and high-resolution characteristic, its obtained data letter Breath is often magnanimity, and in these differential proteins with respect to magnanimity, key necessary to both being formed containing OA sexually revises, Containing only being produced because of the unstability of disease genome with sexually revising [13].In addition, human diseases is also extremely complex, Old OA patient is more likely to suffer from the disease of multiple organ system at the same time, even if being all the patient for only suffering from OA, because of age, gender, body Matter, heredity etc. are different, have an impact to the express spectra of haemocyanin.How by those influence OA occurrence and development it is key Molecule is the significant challenge of current research from non-OA specificity, unstability and with being identified in sexually revising.

To solve these key issues, this project plan first iTRAQ marks combine MALDI-TOF MS/MS find and The technology of identification disease marker albumen is applied to osteoarthritis STR/ort models.STR/ort models are that a kind of spontaneity OA is moved Thing model [14], the Histological assessment of its articular cartilage show, the OA incidence of STR/ort mouse and the order of severity with the age by Cumulative to add, irreversible change appears in final stage, and degenerative process is very similar to human osteoarthritic, is preferably to grind Study carefully the In vivo model [15-19] of OA onsets and progress.In addition, STR/ort mouse models are in kind, strain, gender, age, body Weight, activity, even health status, heredity and microorganism etc. the indifference opposite sex, temperature, humidity, illumination, noise, feed etc. Rearing conditions are also identical, are the consistent cast materials of a kind of disease conditions [20-21], suitable for OA disease marker discovery phases Research, can help to find specific OA candidate markers.

Biomarker has to pass through discovery or identification（Discovery）, verification（Verification）, confirm （Validation）Three steps, then just enter clinical examination etc. deeper into stage [22].For this reason, this project will continue to test Demonstrate,prove the OA serum candidate markers found in STR/ort models, including its differential expression situation and OA specificity issues.We Intend carrying out the expression verification of candidate markers in STR/ort mouse and OA patients serums, determine differential expression trend, adopt at the same time Collect OA patient articular's synovia, the specificity issues of analysis candidate markers and OA lesions, make OA markers in OA clinical samples Also it is verified.Then, our quantitative detections by deep progress OA markers in patients serum's sample, analyze itself and OA diseases The relation of journey, and establish OA diagnosing models, calculate the sensitivity of OA markers diagnosis OA, specificity, positive predictive value and Negative predictive value, proposes their feasibilities in terms of the clinical practices such as the prevention, early diagnosis, disease course prediction of OA.

Therefore, based on iTRAQ marks combine MALDI-TOF MS/MS technologies, spontaneous OA animal models are utilized STR/ort mouse, find and identification OA serum differentially expressed proteins, and to be verified they are specific and poor in OA clinical samples After different expression, then go deep into the research of OA diagnosing models, confirm prevention, early diagnosis, the course of disease of the OA markers in OA Effect in terms of the clinical practices such as prediction.This project will provide new thinking for the early warning of crowd's bony articulation health.

Osteoarthritis marker is composition part indispensable in the research, a kind of osteoarthritis marker of the present invention The technical solution of confirmation, has no identical through retrieving domestic pharmaceutical industry industry.

The content of the invention

The object of the present invention is to provide a kind of confirmation of osteoarthritis marker.

This osteoarthritis marker confirmation,

Comprise the steps of：

1. clinical samples gather：On the premise of informed consent, collection OA patients serums 200；Sample registration form is filled in, is recorded Sample names, numbering, Date of Sampling, medical history information etc.；All operations are carried out on ice as far as possible；Serum is distributed into by 50ul/ pipes 1.5 mL EP are managed, and -80 DEG C save backup；

2. the candidate markers expression in 200 OA patients serums, analysis OA markers and the OA courses of disease are detected using ELISA method Relation；

3. establishing OA diagnosing models with OA markers, 200 patients serums of blind screening, judge that OA markers diagnose OA Sensitivity, specificity, positive predictive value and negative predictive value, propose them in prevention, early diagnosis, disease course prediction of OA etc. Feasibility in terms of clinical practice.

Invention beneficial effect：

The present invention intends by osteoarthritis STR/ort models, and MALDI-TOF MS/MS scientific discoveries are combined using iTRAQ marks OA serum differentially expressed proteins, analyzing them using bioinformatics technique may performance in the signal network of OA occurrence and development Function and interaction；It is equal in osteoarthritis STR/ort models and OA patients serums, lesion knuckle synovia to filter out those Candidate serum OA markers specific expressed and that differential expression trend is consistent；Marker is carried out really by crowd's sample again Recognize, assess the value of these OA candidate markers diagnosis OA and analyze itself and clinical correlation, propose they OA prevention, Feasibility in terms of the clinical practices such as early diagnosis, and its meaning in crowd's bony articulation health early warning.

Embodiment

Embodiment：

This osteoarthritis marker confirmation,

Comprise the steps of：

1. clinical samples gather：On the premise of informed consent, collection OA patients serums 200；Sample registration form is filled in, is recorded Sample names, numbering, Date of Sampling, medical history information etc.；All operations are carried out on ice as far as possible；Serum is distributed into by 50ul/ pipes 1.5 mL EP are managed, and -80 DEG C save backup；

2. the candidate markers expression in 200 OA patients serums, analysis OA markers and the OA courses of disease are detected using ELISA method Relation；

3. establishing OA diagnosing models with OA markers, 200 patients serums of blind screening, judge that OA markers diagnose OA Sensitivity, specificity, positive predictive value and negative predictive value, propose them in prevention, early diagnosis, disease course prediction of OA etc. Feasibility in terms of clinical practice.

The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (1)

1. a kind of osteoarthritis marker confirms, it is characterised in that：Comprise the steps of：

1. clinical samples gather：On the premise of informed consent, collection OA patients serums 200；Sample registration form is filled in, is recorded Sample names, numbering, Date of Sampling, medical history information etc.；All operations are carried out on ice as far as possible；Serum is distributed into by 50ul/ pipes 1.5 mL EP are managed, and -80 DEG C save backup；

2. the candidate markers expression in 200 OA patients serums, analysis OA markers and the OA courses of disease are detected using ELISA method Relation；

3. establishing OA diagnosing models with OA markers, 200 patients serums of blind screening, judge that OA markers diagnose OA Sensitivity, specificity, positive predictive value and negative predictive value, propose them in prevention, early diagnosis, disease course prediction of OA etc. Feasibility in terms of clinical practice.