ELISA Kit for Aggrecan (AGC)

ACAN; AGC1; AGCAN; CSPG1; CSPCP; CSPGCP; MSK16; SEDK; Cartilage-specific proteoglycan core protein; Large Aggregating Proteoglycan; Chondroitin Sulfate Proteoglycan 1


This assay has high sensitivity and excellent specificity for detection of Aggrecan (AGC).
No significant cross-reactivity or interference between Aggrecan (AGC) and analogues was observed.


Matrices listed below were spiked with certain level of recombinant Aggrecan (AGC) and the recovery rates were calculated by comparing the measured value to the expected amount of Aggrecan (AGC) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 92-101 96
EDTA plasma(n=5) 80-97 90
heparin plasma(n=5) 84-95 87


Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Aggrecan (AGC) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Aggrecan (AGC) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%


The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Aggrecan (AGC) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample 1:2 1:4 1:8 1:16
serum(n=5) 84-101% 79-89% 87-101% 97-105%
EDTA plasma(n=5) 92-101% 80-96% 83-101% 78-90%
heparin plasma(n=5) 84-103% 83-101% 81-98% 96-105%


The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.

Reagents and materials provided

Reagents Quantity Reagents Quantity
Pre-coated, ready to use 96-well strip plate 1 Plate sealer for 96 wells 4
Standard 2 Standard Diluent 1×20mL
Detection Reagent A 1×120µL Assay Diluent A 1×12mL
Detection Reagent B 1×120µL Assay Diluent B 1×12mL
TMB Substrate 1×9mL Stop Solution 1×6mL
Wash Buffer (30 × concentrate) 1×20mL Instruction manual 1

Assay procedure summary

1. Prepare all reagents, samples and standards;
2. Add 100µL standard or sample to each well. Incubate 1 hours at 37°C;
3. Aspirate and add 100µL prepared Detection Reagent A. Incubate 1 hour at 37°C;
4. Aspirate and wash 3 times;
5. Add 100µL prepared Detection Reagent B. Incubate 30 minutes at 37°C;
6. Aspirate and wash 5 times;
7. Add 90µL Substrate Solution. Incubate 10-20 minutes at 37°C;
8. Add 50µL Stop Solution. Read at 450nm immediately.



Magazine Citations
Experimental Biology and Medicine Acidic pH conditions mimicking degenerative intervertebral discs impair the survival and biological behavior of human adipose-derived mesenchymal stem cells Rsmjournals: Source
Age( dordr). In vitro tenocyte metabolism in aging and oestrogen deficiency Springer: Source
PLoS ONE A Combinatorial Relative Mass Value Evaluation of Endogenous Bioactive Proteins in Three-Dimensional Cultured Nucleus Pulposus Cells of Herniated Intervertebral Discs: Identification of Potential Target Proteins for Gene Therapeutic Approaches Plosone: Source
Stem Cell Research & Therapy Protein synthesis and secretion in human mesenchymal cells derived from bone marrow, adipose tissue and Wharton's jelly. Pubmed: 24739658
Materials Science and Engineering: C Co-electrospun gelatin-poly(l-lactic acid) scaffolds: Modulation of mechanical properties and chondrocyte response as a function of composition ScienceDirect: S0928493113006656
PLoS One. Mesenchymal stromal cell proliferation, gene expression and protein production in human platelet-rich plasma-supplemented media Pubmed:Pmc4130592
Connective Tissue Research Metabolic and cytoprotective effects of in vivo peri-patellar hyaluronic acid injections in cultured tenocytes Pubmed:25333747
Macromolecular Bioscience Highly Porous Gelatin Reinforced 4D Scaffolds for Articular Cartilage Regeneration PubMed: 25787871
Osteoarthritis and Cartilage Parathyroid hormone(1-34) exhibits more comprehensive effects than celecoxib in cartilage metabolism and maintaining subchondral bone micro-architecture in meniscectomized Cavia (Guinea pig )inea pigs Pubmed:26802547
Cell Proliferation Effects of low oxygen tension on gene profile of soluble growth factors in co‐cultured adipose‐derived stromal cells and chondrocytes Pubmed:27090063
bmc musculoskeletal disorders Strontium ranelate causes osteophytes overgrowth in a model of early phase osteoarthritis. pubmed:28187731
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