CTSD ELISA kit (Human)

SKU: SEB280Hu

Size: 96Tests

# of Times Cited in literature: 11

Prepare Time: 1-3 days(please inquire for mutiple units)

Target Name: CTSD

Target Full Name: Cathepsin D

Alternative Names: CPSD; CLN10; Lysosomal Aspartyl Protease; Ceroid-Lipofuscinosis,Neuronal 10

Target Species: Human

Uniprot: P07339

Gene ID: 1509

Featured Series: SE kit

Featured Series Function: Detects protein (regular version)

Specificity: Reactive with Human CTSD / Cathepsin D

Method: Colormetric

Detection principle: Double-antibody Sandwich

Detection range: 0.24-15ng/mL

Sensitivity: 0.11ng/mL

Assay Time: 3h

Sample Size: 100uL

Recommended/Predicted Sample Types: Serum, Plasma, Tissue Homogenates, Cell Lysates, Cell Culture Supernates and other Biological Fluids

Assay Precision: Intra-Assay: CV<10%, Inter-Assay: CV<12%

Reproducibility test menthod: Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Cathepsin D (CTSD) were tested 20 times on one plate, respectively. Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Cathepsin D (CTSD) were tested on 3 different plates, 8 replicates in each plate. CV(%) = SD/meanX100

Storage: 4°C for 1 month/ -20°C for long-term(One year within shelf life)

Shelf-life: 12 months

Specificity: This assay has high sensitivity and excellent specificity for detection of Cathepsin D (CTSD). No significant cross-reactivity or interference between Cathepsin D (CTSD) and analogues was observed.

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.

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.

Test principle: The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Cathepsin D (CTSD). Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody specific to Cathepsin D (CTSD). Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Cathepsin D (CTSD), biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Cathepsin D (CTSD) in the samples is then determined by comparing the O.D. of the samples to the standard curve.

Research Area: Tumor immunity;

References Citing This Product: Cathepsin D is released after severe tissue trauma in vivo and is capable of generating C5a in vitro

Plasma Cathepsin D Levels: A Novel Tool to Predict Pediatric Hepatic Inflammation

Plasma cathepsin D correlates with histological classifications of fatty liver disease in adults and responds to intervention

Limited applicability of cathepsin D for the diagnosis and monitoring of non‐alcoholic steatohepatitis

Plasma cathepsin D activity is negatively associated with hepatic insulin sensitivity in overweight and obese humans

Identification of Cathepsin D as a Plasma Biomarker for Alzheimer's Disease

Serum CathepsinD in pregnancy: relation with metabolic and inflammatory markers and effects of fish oils and probiotics

A Comparison of Various Chips Used for the Manufacture of Biosensors Applied in Non-Fluidic Array SPRi, Based on the Example of Determination of Cathepsin D