Granted Patent
B2
US 12,545,918 · App. 18/115,846 · Granted Feb 10, 2026
Enabling cholesterol catabolism in mammalian cells lacking same
Inventors:
Richard Eric Honkanen (Mobile, AL); Brandon Marshall D'Arcy (Mobile, AL); Mark Raymond Swingle (Mobile, AL)
C12N15/52C12N5/0636C12N15/62A61K35/17C07K2319/43C12N9/0006C12N9/001C12N9/0077C12N9/0095C12N2710/16141C12N2820/005C12N2820/60C12Y101/01051C12Y101/01145C12Y103/01021C12Y103/99004C12Y106/02004C12Y114/15C12Y114/15006C12Y118/01002
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Abstract
Compositions, methods, and systems for modifying sterol metabolism in a subject is disclosed. In some embodiments, the subjects may be administered one or more mammalian cells modified to express at least one sterol degrading enzyme derived from a bacterium. In many embodiments, the cell is a macrophage or monocyte stably expressing three or more enzymes that aid in opening the β ring of cholesterol. The disclosed compositions and methods may be useful in lowering cholesterol levels in a subject in need thereof. In some embodiments, the subject may have a genetic predisposition to atherosclerosis.
Claims (22)
1 . A method of altering a mammalian cell that cannot catabolize a cholesterol comprising:
introducing an expression vector comprising a nucleic acid into the cell; and
expressing 3-ketosteroid Δ1-dehydrogenase coded for by nucleotides 170 to 1704 of SEQ ID NO: 13 (Δ1-KstD), from the vector, and one or more enzymes that catabolize the cholesterol wherein the one or more enzymes are selected from cholesterol dehydrogenase (coded for by nucleotides 166 to 1284 of SEQ ID NO: 10 (CholD), anoxic cholesterol metabolism B enzyme coded for by nucleotides 74 to 1756 of SEQ ID NO:11 (acmB), 3-ketosteroid 9α-hydroxylase coded for by nucleotides 132 to 1316 and 1416 to 2483 of SEQ ID NO: 17 (KshAB), 3β-hydroxysteroid dehydrogenase 2 coded for by nucleotides 3554 to 4672 of SEQ ID NO: 12 (HSD2), and P450-ferredoxin reductase-ferredoxin fusion protein of SEQ ID NO: 5 (P450-FdxR-Fdx).
2 . The method of claim 1 , wherein the expression is controlled by a eukaryotic promoter sequence.
3 . The method of claim 2 , wherein the nucleic acid includes a coding sequence for KshAB.
4 . The method of claim 3 , wherein the eukaryotic promoter sequence is a CMV promoter sequence.
5 . The method of claim 4 , wherein the cell is an immune cell.
6 . The method of claim 1 , wherein the nucleic acid comprises at least one sequence selected from SEQ ID NOS: 10-27.
7 . The method of claim 3 , wherein the nucleic acid comprises the sequence SEQ ID NO: 27.
8 . The method of claim 5 , wherein the immune cell is a monocyte.
9 . The method of claim 5 , wherein the immune cell is a macrophage.
10 . The method of claim 8 , wherein the nucleic acid comprises the sequence SEQ ID NO: 27.
11 . The method of claim 9 , wherein the nucleic acid comprises the sequence SEQ ID NO: 27.
12 . The method of claim 9 , wherein the nucleic acid comprises sequence SEQ ID NO: 27.
13 . The method of claim 7 , wherein the cell is a monocyte.
14 . The method of claim 7 , wherein the cell is a macrophage.
15 . The method of claim 2 , wherein the eukaryotic promoter sequence is a CMV promoter sequence.
16 . The method of claim 15 , wherein the nucleic acid comprises sequence SEQ ID NO: 27.
17 . The method of claim 16 , wherein the cell is a monocyte.
18 . The method of claim 16 , wherein the cell is a macrophage.
19 . The method of claim 1 , wherein the nucleic acid comprises sequence SEQ ID NO: 27, and wherein the cell is a monocyte.
20 . The method of claim 1 , wherein the nucleic acid comprises sequence SEQ ID NO: 27, and wherein the cell is a macrophage.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Mar 1, 2023
From: HONKANEN, RICHARD ERIC; D'ARCY, BRANDON MARSHALL; SWINGLE, MARK RAYMOND
To: UNIVERSITY OF SOUTH ALABAMA FOUNDATION FOR RESEARCH AND COMMERCIALIZATION
Reel/Frame 062838/0736 →
Continuity (3)
Provisional Application
62754499
· Nov 1, 2018
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