Revision 5

#76145

Store at +4C

PathScan® RP ApoE4 Sandwich ELISA Kit

1 Kit

(96 assays)

Species Cross Reactivity:
H

UniProt ID:
#P02649

Entrez-Gene Id:
#348

CST Logo
Orders:

877-616-CELL (2355)

orders@cellsignal.com

Support:

877-678-TECH (8324)

3 Trask Lane | Danvers | Massachusetts | 01923 | USA

For Research Use Only. Not for Use in Diagnostic Procedures.

Product Includes Product # Quantity Color Storage Temp
ApoE (pan) Rabbit mAb Coated Microwells9158396 tests+4C
ApoE4 Mouse Detection mAb611951 eaRed (Lyophilized)+4C
HRP Diluent135155.5 mlRed+4C
TMB Substrate700411 ml+4C
STOP Solution700211 ml+4C
Sealing Tape545032 ea+4C
ELISA Wash Buffer (20X)980125 ml+4C
Cell Lysis Buffer (10X)980315 ml-20C

Kit contents scale proportionally with size, except sealing tape.
Example: The V1 kit contains 5X the listed quantities above, but will exclude the sealing tape.

The microwell plate is supplied as 12 8-well modules - Each module is designed to break apart for 8 tests.

Description

The rapid protocol (RP) PathScan® RP ApoE4 Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of ApoE4 in a reduced assay time of 1.5 hours. Incubation of cell lysates and detection antibody on the coated microwell plate forms a sandwich with ApoE4 in a single step. The plate is then extensively washed and TMB reagent is added for signal development. The magnitude of absorbance for the developed color is proportional to the quantity of ApoE4. Learn more about all of your ELISA kit options here.

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

Specificity/Sensitivity

The PathScan® RP ApoE4 Sandwich ELISA Kit detects endogenous levels of ApoE4 protein, but does not cross-react with ApoE2 or ApoE3, as shown in Figure 1. The kit sensitivity is shown in Figure 2. This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species.

Background

Apolipoproteins are plasma lipoproteins that function as transporters of lipids and cholesterol in the circulatory system. Chylomicrons are a fundamental class of apolipoproteins containing very low-density lipoproteins (VLDL), intermediate-density lipoproteins (IDL), low-density lipoproteins (LDL), and high-density lipoproteins (HDL) (1,2).
Human ApoE has three isoforms: ApoE2, ApoE3, and ApoE4. These three isoforms differ in the combination of cysteine and arginine residues located at positions 130 and 176. The ApoE4 isoform contains arginine at both locations. Research studies have linked ApoE4 function to neuronal plasticity, synaptogenesis, and neurodegenerative diseases (3). ApoE4 is produced in the liver and brain, although it is widely expressed in other tissues, such as the lung, spleen, and ovary. Investigators have established the ApoE4 allele as a genetic risk factor for Alzheimer’s disease (AD), accounting for 50-60% of the genetic variation in the disease (4). Research studies indicate that patients expressing ApoE4 have a reduced capacity for synaptic plasticity, an earlier age of onset of AD, and an increase in amyloid-beta (Aβ) deposition. The increase in Aβ suggests a role for ApoE4 in the impairment of amyloid clearance (5).

Trademarks and Patents

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

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

All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

Orders: 877-616-CELL (2355) orders@cellsignal.com Support: 877-678-TECH (8324) info@cellsignal.com Web: cellsignal.com
For Research Use Only. Not for Use in Diagnostic Procedures.

Revision 5

Cell Signaling Technology Logo
Figure 1. The PathScan® RP ApoE4 Sandwich ELISA Kit #76145 detects human ApoE4 protein, but not ApoE2 or ApoE3. The absorbance at 450 nm for a panel of cell and tissue extracts (0.05 mg/mL for each sample) using the PathScan® RP ApoE4 Sandwich ELISA Kit #76145 is shown in the left figure. The corresponding western blots using ApoE4 antibody and ApoE (pan) antibody are shown in the right figure (both of these antibodies are human reactive, and not mouse/rat reactive). Extracts were prepared from various cells/tissues, including 293T cells that were either mock transfected (293T/mock) or transfected with constructs expressing full-length human ApoE2 (293T/ApoE2), full-length human ApoE3 (293T/ApoE3), or full-length human ApoE4 (293T/ApoE4).
ELISA Image 1: PathScan<sup>®</sup> RP ApoE4 Sandwich ELISA Kit
Figure 2. The relationship between lysate protein concentration from 293T cells transfected with a construct expressing full-length human ApoE4 and the absorbance at 450 nm using the PathScan® RP ApoE4 Sandwich ELISA Kit #76145 is shown.
ELISA Image 2: PathScan<sup>®</sup> RP ApoE4 Sandwich ELISA Kit
Figure 3. The PathScan® RP ApoE4 Sandwich ELISA Kit #76145 detects ApoE4 in Alzheimer’s disease (AD) patient cerebrospinal fluid (CSF), plasma, and serum. The absorbance at 450 nm for 3 dilutions of human CSF, plasma, and serum obtained from one AD patient and one normal donor is shown in the figure.
ELISA Image 3: PathScan<sup>®</sup> RP ApoE4 Sandwich ELISA Kit
Orders: 877-616-CELL (2355) orders@cellsignal.com Support: 877-678-TECH (8324) info@cellsignal.com Web: cellsignal.com
For Research Use Only. Not for Use in Diagnostic Procedures.