IP Library Granted Patent US 9,145,577
Granted Patent B2
US 9,145,577 · App. 13/206,682 · Granted Sep 29, 2015

Lipoprotein lipase assay

Inventor: Weijun Jin (Brooklyn, NY)
Assignee: The Research Foundation of State University of New York
C12Q1/44C12Q1/00C12Q1/34C12Q1/56C12N9/18G01N2333/914G01N2333/918
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Quick Facts
Patent No.
US 9,145,577
App. No.
13/206,682
Granted
Sep 29, 2015
Kind
B2
Abstract

The present invention is directed to a method and kit for the measurement of LPL. The method comprises several steps that effect a measurement of a level of LPL activity. The kit comprises several elements that effect the measurement of a level of LPL activity.

Claims (18)

1. A method for detecting activity of lipoprotein lipase in a biological sample of a subject comprising:

administering a dosage of an anti-coagulant to the subject;

gathering the biological sample;

adding the biological sample to a well of a well plate;

adding a first buffer to the well of the well plate, wherein the first buffer comprises 0.15 M NaCl, 20 mM Tris-HCl and 1.5% fatty acid-free BSA;

adding a second buffer to the well of the well plate, wherein the second buffer comprises 0.0125% Zwittergent;

adding a fluorescent substrate to the well of the well plate, wherein the substrate is 0.62 μM 4,4-difluoro-5-methyl-4-bora-3a,4a-diaza-s-indacene-3-dodecanoic acid (BODIPY) dye and a quencher in a TG backbone, and wherein the biological sample, first buffer, second buffer and substrate form a mixture;

incubating the well plate;

measuring a fluorescence signal of the mixture within the well of the well plate to obtain a measured fluorescence signal; and

correlating the measured fluorescence signal to a level of LPL activity.

2. The method of claim 1 , wherein the anti-coagulant is heparin.

3. The method of claim 1 , wherein the anti-coagulant is administered intravenously, subcutaneously or a combination of intravenously and subcutaneously.

4. The method of claim 1 , wherein the well plate is incubated for a period between about 2 minutes to about 2 hours.

5. The method of claim 4 , wherein the well plate is incubated for about 10 minutes.

6. The method of claim 1 , wherein the biological sample is a blood sample.

7. The method of claim 1 , wherein the biological sample is a plasma portion of a blood sample.

8. The method of claim 1 , wherein the measured fluorescence signal-to-noise ratio (SNR) is about 30.

9. The method of claim 8 , wherein the SNR is about 30 after the well plate is incubated for about 10 minutes.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 22, 2011
From: JIN, WEIJUN
To: THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK
Reel/Frame 027270/0205 →
CONFIRMATORY LICENSE Recorded Oct 24, 2011
From: THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK
To: NATIONAL INSTITUTES OF HEALTH (NIH), U.S. DEPT. OF HEALTH AND HUMAN SERVICES (DHHS), U.S. GOVERNMENT
Reel/Frame 027111/0510 →
Continuity (2)
Provisional Application 61372325 · Aug 10, 2010
Related Publication 20120064556A1 · Mar 15, 2012