Center for Alzheimer's Disease Research

Biomarkers Facility

This laboratory focuses on biomarkers in cerebrospinal fluid and blood.

In collaboration with world experts from Sweden, Brown University began work in 2021 to establish a new fluid biomarkers laboratory to accelerate the development of promising blood tests to improve early diagnosis and testing of new treatments for Alzheimer’s disease and related dementias. 

A biomarker is a measurable indicator of a biological state or condition. Biomarkers are measured and evaluated using blood, urine, soft tissues or imaging. Blood tests in particular are a game changer for Alzheimer’s disease. These tests can improve diagnosis and accelerate testing of new treatments in the fight against Alzheimer’s disease and neurodegeneration. The new Brown laboratory will transform research at the University, serving as a bridge between clinical studies on dementia and foundational research uncovering the mechanisms underlying these devastating conditions.

The core of the facility's work is to perform existing biomarker assays — such as amyloid, tau and markers of neurodegeneration — and search for new biomarkers. An important focus of the work of the laboratory is biomarkers in cerebrospinal fluid and blood, ultimately striving for blood-based biomarker assays that robustly diagnose disease, distinguish among different forms of dementia, and can be performed for low cost in any clinical laboratory.

Contact/Location

Location

Brown University
BioMed Center
85 Brown St RM106
Providence, RI 02906
(401) 863-6849

Related Links

Forms

Please contact Facility Manager Kristine Pelton. Forms will be added once completed by Research Contracting.

Resources for Grants

The Fluid Biomarker Core Facility, located in the BioMed Center at Brown University, is equipped to measure biomarkers of disease in blood, urine, saliva, cerebrospinal fluid, and tissue lysates using three immunoassay platforms. Both the HD-X™ (Quanterix) and SMCxPro® (EMDMillipore) instruments offer bead-based immunoassays providing fg/ml sensitivity for detection of protein biomarkers. The MESO QuickPlex™ SQ 120 (Meso Scale Diagnostics) multiplex analyzer utilizes electrochemiluminescence to measure up to 10 analytes per each well.

In addition, the laboratory is equipped with a Nanodrop 8 spectrophotometer (ThermoFisher), Biotek EL406 plate washer and fluid dispenser (Agilent), Biotek 405 plate washer (Agilent), Biotek Synergy H1 multimode plate reader (Agilent), Jitterbug 4 Heated Microplate Shaker (Boekel Scientific) thus offering flexibility in custom assay design services.

Service Requests

  • All Biomarker Assay and Biospecimen processing services can be requested through iLabs. Biomarker Core Services Request (or button that says “Request Biomarker Services”)
  • Internal Investigators must use their Brown credentials to login to iLabs. External users should register for an account directly through the iLabs system
  • Help & Support

The quickest way to get assistance with any questions or issues is by reaching out to the iLab Support Team through one of the following channels:

PHONE SUPPORT:  Available 24 hrs a day. Click here for more info.

Services & Instruments

The SIMOA® HD-X™ Analyzer is an ultrasensitive protein biomarker analysis platform that uses single-molecule array (Simoa®) technology, which enables sensitive and specific measurement of low-abundance proteins in complex biological samples such as serum, plasma, CSF, urine, saliva, as well as cell and tissue lysates. The HD-X™ system features high-throughput processing and enables simultaneous use of digital (single molecule counting) and analog (integrated fluorescence intensity) measurements to provide ultra-sensitive single molecule detection with dynamic range of 4-5 logs.  It also offers multiplexing capabilities, allowing simultaneous analysis of up to 6 biomarkers in a single sample at fg/ml concentrations. Overall, the HD-X™ platform is designed to advance our understanding of biological processes and support the discovery of new diagnostic and therapeutic targets. The HD-X™  Analyzer is compatible with a menu of over 75 ultra-sensitive Simoa® assays and Simoa® Homebrew Assays offer flexibility for custom assay development.

HD-X Automated Immunoassay Analyzer

Meso Scale Discovery (MSD) QuickPlex® SQ 120MM is a high-throughput multiplex assay platform for protein and biomarker analysis. The QuickPlex 120 system is capable of measuring up to 10 different protein analytes in a single well of a 96-well plate, making it ideal for large-scale and complex studies. It uses electrochemiluminescence technology to deliver highly sensitive and reproducible results. Additionally, MSD offers a range of pre-validated assays for a variety of applications including neurodegeneration, neuroinflammation, intracellular signaling, toxicology and phosphorylation analysis. The QuickPlex 120 system is designed to support basic research, drug discovery, and clinical diagnostics with the option for easy-to-build custom multiplex assays.

Meso Scale QuickPlex® SQ 120MM

The SMCxPro® analyzer uses both plate-based and bead-based singleplex assay designs for the quantification of protein-based targets in highly complex samples including serum, plasma, CSF and saliva. Additionally, the digital quantification of individual molecules provides fg/ml sensitivity required for detection of blood based protein biomarkers. The SMC™ technology allows the measurement of proteins with increased precision, enabling quantification at both low and high expression levels. The SMCxPRO® is compatible with a menu of off-the-shelf, verified assay kits, as well as several options for homebrew custom assay development. Distinguishing SMC® assays from traditional immunoassays, an elution buffer is used to break apart the immunoassay complex and the eluate containing the fluorescent reporter molecule is transferred into the SMCxPRO® instrument where a laser excites the fluorescent-labeled detection antibody and individual photons are captured by an avalanche photodiode, thus removing other assay components that contribute high background fluorescent signal. 

SMCxPRO®

The Fluid Biomarkers Laboratory offers custom ELISA development or optimization of an existing immunoassay to detect or measure a specific target molecule according to your specifications. Following initial ELISA protocol optimization, custom homebrew assays can be developed using the Simoa® technology on the HD-X™ or with SMC™ technology on the SMCxPRO®. In addition, Meso Scale Diagnostics offers easy-to-build custom plate designs for several assay kit types (S-plex, V-plex and U-plex).

  • Whole Blood Processing
  • Buffy Coat Extraction
  • DNA Extraction
  • RNA Extraction
  • Sample Aliquots