Multiplex Assay Kit for S100 Calcium Binding Protein A7 (S100A7) ,etc. by FLIA (Flow Luminescence Immunoassay)

S100-A7; PSOR1; S100A7c; Psoriasin 1

(Note: Up to 8-plex in one testing reaction)

Specificity

This assay has high sensitivity and excellent specificity for detection of S100 Calcium Binding Protein A7 (S100A7) ,etc. by FLIA (Flow Luminescence Immunoassay).
No significant cross-reactivity or interference between S100 Calcium Binding Protein A7 (S100A7) ,etc. by FLIA (Flow Luminescence Immunoassay) and analogues was observed.

Recovery

Matrices listed below were spiked with certain level of recombinant S100 Calcium Binding Protein A7 (S100A7) ,etc. by FLIA (Flow Luminescence Immunoassay) and the recovery rates were calculated by comparing the measured value to the expected amount of S100 Calcium Binding Protein A7 (S100A7) ,etc. by FLIA (Flow Luminescence Immunoassay) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 97-105 101
EDTA plasma(n=5) 79-91 84
heparin plasma(n=5) 89-97 94
sodium citrate plasma(n=5) 87-101 91

Precision

Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level S100 Calcium Binding Protein A7 (S100A7) ,etc. by FLIA (Flow Luminescence Immunoassay) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level S100 Calcium Binding Protein A7 (S100A7) ,etc. by FLIA (Flow Luminescence Immunoassay) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of S100 Calcium Binding Protein A7 (S100A7) ,etc. by FLIA (Flow Luminescence Immunoassay) 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) 79-101% 98-105% 80-95% 80-98%
EDTA plasma(n=5) 85-96% 98-105% 94-103% 91-98%
heparin plasma(n=5) 97-104% 78-97% 87-103% 79-99%
sodium citrate plasma(n=5) 97-104% 92-101% 78-95% 79-93%

Stability

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
96-well plate 1 Plate sealer for 96 wells 4
Pre-Mixed Standard 2 Standard Diluent 1×20mL
Pre-Mixed Magnetic beads (22#:S100A7) 1 Analysis buffer 1×20mL
Pre-Mixed Detection Reagent A 1×120μL Assay Diluent A 1×12mL
Detection Reagent B (PE-SA) 1×120μL Assay Diluent B 1×12mL
Sheath Fluid 1×10mL Wash Buffer (30 × concentrate) 1×20mL
Instruction manual 1

Assay procedure summary

1. Preparation of standards, reagents and samples before the experiment;
2. Add 100μL standard or sample to each well,
    add 10μL magnetic beads, and incubate 90min at 37°C on shaker;
3. Remove liquid on magnetic frame, add 100μL prepared Detection Reagent A. Incubate 60min at 37°C on shaker;
4. Wash plate on magnetic frame for three times;
5. Add 100μL prepared Detection Reagent B, and incubate 30 min at 37°C on shaker;
6. Wash plate on magnetic frame for three times;
7. Add 100μL sheath solution, swirl for 2 minutes, read on the machine.

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Magazine Citations
Archives of Dermatological Research Serum levels of antimicrobial peptides and proteins do not correlate with psoriasis severity and are increased after treatment with fumaric acid esters SpringerLink: t07u24t43r357l15
J Proteome Res Proteomic Signature of Endothelial Dysfunction Identified in the Serum of Acute Ischemic Stroke Patients by the iTRAQ-Based LC–MS Approach PubMed: 25807139
Exp Dermatol S100A7 (psoriasin) inhibits human epidermal differentiation by enhanced IL-6 secretion through IκB/NF-κB signaling Pubmed:27060579
Experimental Dermatology S100A7 (psoriasin) inhibits human epidermal differentiation by enhanced IL‐6 secretion through IκB/NF‐κB signalling pubmed:27060579
Experiental And Therapeutic Medicine Plasma proteins as potential targets of abnormal Savda syndrome in asthma patients treated with unique Uighur prescription pubmed:28672924
Scientific Reports The psoriasis-associated IL-17A induces and cooperates with IL-36 cytokines to control keratinocyte differentiation and function. pubmed:29142248
Journal of the European Academy of Dermatology and Venereology A potential contribution of psoriasin to vascular and epithelial abnormalities and inflammation in systemic sclerosis Pubmed:28681537
Scientific Reports Measurements of AMPs in stratum corneum of atopic dermatitis and healthy skin–tape stripping technique Pubmed:29374283
Neuroscience Bulletin Comprehensive proteomic profiling of patients' tears identifies potential biomarkers for the traumatic vegetative state Pubmed:30019218
Journal of Proteomics Salivary proteins from dysplastic leukoplakia and oral squamous cell carcinoma and their potential for early detection Pubmed: 31706945
Mediators of Inflammation Alarmins HMGB1, IL-33, S100A7, and S100A12 in Psoriasis Vulgaris
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