| PGRN

Progranulin is the precursor protein for granulin.Cleavage of progranulin into granulin occurs either in the extracellular matrix or the lysosome.Progranulin and granulin can be further differentiated by their hypothesized opposing roles in the cell. Progranulin is expressed in a wide variety of cell types both in the periphery and in the central nervous system. Progranulin expression is low in early development, but increases as cells mature.Cell types expressing progranulin include neurons, microglia, astrocytes and endothelial cells.Progranulin has been found to be highly expressed in microglia and up-regulated during injury Within the brain, progranulin mRNA is highly expressed in pyramidal, hippocampal and Purkinje cells cells.
 

| Typical data

As the OD values of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique, wash technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data are provided below for reference only.

 

Concentration (ng/mL)	300	150	75	37.5	18.75	9.37	4.68	0
OD	2.22	1.56	0.92	0.63	0.42	0.25	0.18	0.01
Corrected OD	2.14	1.48	0.84	0.55	0.34	0.17	0.1	-

 

| Repeatability

Intra-assay Precision (Precision within an assay)：CV% < 10%; Inter-assay Precision (Precision between assays)：CV% < 10%
 

| Recovery

The recovery of Human PGRN spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.

 

Sample Type	Range(%)	Average Recovery(%)
Serum(n=8)	84-101	95
Plasma(n=8)	92-106	102
Cell Culture Supernates(n=8)	96-108	105

 

| Linearity

Samples were spiked with high concentrations of Human PGRN and diluted with Universal Diluent to produce samples with values within the range of the assay.

 

		Serum(n=4)	Plasma(n=4)	Cell Culture Supernates(n=4)
1 : 2	Range (%)	84-95	88-96	90-110
	Average (%)	91	93	96
1 : 4	Range (%)	89-103	87-108	105-114
	Average (%)	94	98	107