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FastScan^™ TREM2 (Extracellular Amino-terminal Antigen) ELISA Kit

FastScan^™ TREM2 (Extracellular Amino-terminal Antigen) ELISA Kit #63109

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Supporting Data

REACTIVITY

Application Key:

ELISA-ELISA

Species Cross-Reactivity Key:

M-Mouse

Product Information

Product Description

The FastScan™ TREM2 (Extracellular Amino-terminal Antigen) ELISA Kit is a sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of TREM2. To perform the assay, sample is incubated with a capture antibody conjugated with a proprietary tag and a second detection antibody linked to HRP, forming a sandwich with TREM2 in solution. This entire complex is immobilized to the plate via an anti-tag antibody. The wells are then washed to remove unbound material. TMB is then added. The magnitude of observed signal is proportional to the quantity of TREM2.

*Antibodies in this kit are custom formulations specific to kit.

IMPORTANT: This FastScan™ ELISA Kit requires 4 washes at Step 6 of the protocol.

Protocol

Specificity / Sensitivity

The FastScan™ TREM2 (Extracellular Amino-terminal Antigen) ELISA Kit detects endogenous levels of TREM2, as shown in Figures 1 and 2. This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species. The antibodies used in this kit target the extracellular amino-terminal region of mouse TREM2.

Species Reactivity:

Mouse

Background

The triggering receptor expressed on myeloid cells 2 (TREM2) protein is an innate immune receptor that is expressed on the cell surface of microglia, macrophages, osteoclasts, and immature dendritic cells (1). The TREM2 receptor is a single-pass type I membrane glycoprotein that consists of an extracellular immunoglobulin-like domain, a transmembrane domain, and a cytoplasmic tail. TREM2 interacts with the tyrosine kinase-binding protein DAP12 to form a receptor-signaling complex (2). The TREM2 protein plays a role in innate immunity and a rare functional variant (R47H) of TREM2 is associated with the late-onset risk of Alzheimer’s disease (1,3). Research studies using mouse models of Alzheimer’s disease indicate that deficiency and haploinsufficiency of TREM2 can lead to increased β-amyloid (Aβ) accumulation as a result of dysfunctional microglial response (4). These results agree with the distribution of TREM2 in human brain regions (e.g., white matter, the hippocampus, and neocortex) that are involved in Alzheimer's disease pathology (2). In addition, amyloid plaque formation induces expression of TREM2 and amyloid phagocytosis (5). Loss-of-function mutations in the corresponding TREM2 or DAP12 genes can result in Nasu-Hakola disease, a rare form of progressive presenile dementia that results from polycystic osseous lesions (6). TREM2 membrane shedding occurs by cleavage at the extracellular site between H157/S158, generating an N-terminal shedded fragment and a membrane bound C-terminal fragment (7,8).

Database Links

UniProt ID: Q99NH8

Entrez-Gene Id: 83433

Limited Uses

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For Research Use Only. Not For Use In Diagnostic Procedures.

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

FastScan™ ELISA is a registered trademark of Cell Signaling Technology, Inc.

U.S. Patents 9,086,407, 9,261,500, and 9,476,874, foreign equivalents, and child patents deriving therefrom.

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FastScan™ TREM2 (Extracellular Amino-terminal Antigen) ELISA Kit #63109