Wednesday, May 7, 2025 5/7/2025

Enabling isolation and characterization of single extracellular vesicles and their molecular contents using multi-marker surface signatures

Award Number: UH3TR002886
ORGANIZATION: NATIONAL CENTER FOR ADVANCING TRANSLATIONAL SCIENCES
OPDIV: NIH
AWARD CLASS: COOPERATIVE AGREEMENT
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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Enabling isolation and characterization of single extracellular vesicles and their molecular contents using multi-marker surface signatures - Abstract Extracellular vesicles (EVs) are believed to be an important means of transporting RNA and other signaling molecules between cells. Most types of cells in the human body secrete EVs which are each likely to have distinct biological functions. Studying different types of EVs and their role in normal physiologic function and disease-related processes requires a reliable means of capturing these particles from readily accessible body fluids, like blood or urine. Our goal is to develop a new way to isolate specific types of EVs based on the molecules present on their surface. Our hypothesis is that we can use the presence of two or more specific molecules on the surface of select EVs secreted by a particular cell type. Once we isolate highly purified populations we can more easily identify and measure their molecular contents. We will develop a new scalable approach to identifying combinations of surface molecules present on EVs from particular cell types and use this to identify multi-marker “surface signatures” for several types of cells known to secrete EVs directly into the bloodstream. We will develop a new method to isolate the EVs with each of these surface signatures. This approach, which will only capture the EVs having all of the targeted surface markers, should greatly improve the capture specificity, thus, addressing one of the main shortcomings of the existing EV isolation methods. We will verify the purity of the isolated EVs by measuring the presence of each of the surface-signature markers on every EV using recently developed multi-marker assays and a new high-sensitivity single-EV characterization instrument. Generating highly purified EVs from specific cell types will enable more targeted studies of EVs than those that are presently performed. For example, we will identify specific regulatory RNA molecules in the purified EVs by next generation sequencing and measure the distribution of these molecules at the single EV level using the new instrumentation and assay techniques. Lastly we will refine the isolation methods to enable high-throughput isolation of EVs from several commonly used biofluids and automate the single EV characterization instrumentation to enable large studies that presently would be either impossible or too time-consuming to be cost-effective.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2025 ( Subtotal = $0 )
2025	2022	MESO SCALE DIAGNOSTICS LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	000	4	4/29/2025	NON-COMPETING CONTINUATION	$0
														Subtotal = $0

Issue Date FY: 2024 ( Subtotal = $0 )
2024	2022	MESO SCALE DIAGNOSTICS LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	000	4	7/31/2024	NON-COMPETING CONTINUATION	$0
														Subtotal = $0

Issue Date FY: 2023 ( Subtotal = $0 )
2023	2022	MESO SCALE DIAGNOSTICS, LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	000	4	12/3/2022	NON-COMPETING CONTINUATION	$0
														Subtotal = $0

Issue Date FY: 2022 ( Subtotal = $1,184,000 )
2022	2022	MESO SCALE DIAGNOSTICS, LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	005	4	8/23/2022	SUPPLEMENT FOR EXPANSION	$289,408
2022	2022	MESO SCALE DIAGNOSTICS, LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	006	4	8/25/2022	NON-COMPETING CONTINUATION	$0
2022	2022	MESO SCALE DIAGNOSTICS, LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	004	4	7/14/2022	NON-COMPETING CONTINUATION	$836,182
2022	2021	MESO SCALE DIAGNOSTICS, LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	003	3	5/5/2022	EXTENSION WITH OR WITHOUT FUNDS	$0
2022	2021	MESO SCALE DIAGNOSTICS, LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	000	3	11/6/2021	EXTENSION WITH OR WITHOUT FUNDS	$0
2022	2021	MESO SCALE DIAGNOSTICS, LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	002	3	3/26/2022	EXTENSION WITH OR WITHOUT FUNDS	$0
2022	2021	MESO SCALE DIAGNOSTICS, LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	001	3	3/1/2022	EXTENSION WITH OR WITHOUT FUNDS	$58,410
														Subtotal = $1,184,000

Issue Date FY: 2021 ( Subtotal = $855,054 )
2021	2021	MESO SCALE DIAGNOSTICS, LLC	1601 RESEARCH BLVD	ROCKVILLE	MD	20850	MONTGOMERY	USA	Trans-NIH Research Support	000	3	9/9/2021	EXTENSION WITH OR WITHOUT FUNDS	$855,054
														Subtotal = $855,054

Grand Total All Awards = $2,039,054

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Enabling isolation and characterization of single extracellular vesicles and their molecular contents using multi-marker surface signatures

Award Number: UH3TR002886

ORGANIZATION: NATIONAL CENTER FOR ADVANCING TRANSLATIONAL SCIENCES

OPDIV: NIH

AWARD CLASS: COOPERATIVE AGREEMENT

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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