# US 2021/0277084 A1 · Biopharmaceutical agents for use in reducing lipid content in cells

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- Number: US 2021/0277084 A1
- Document ID: US20210277084A1
- Status: Published application
- Kind: A1
- Application number: 17/258,217
- Filed: 2019-07-08
- Published: 2021-09-09
- Earliest claimed: 2018-07-06
- Assignees: University of the Witwatersrand, Johannesburg
- Applicants: University of the Witwatersrand, Johannesburg
- Inventors: Stefan Franz Thomas WEISS; Tyrone Chad OTGAAR; Eloise VAN DER MERWE; Martin BERNERT; Gavin MORRIS
- Web page: https://patentgrep.com/patent/US20210277084A1

## CPC

- A61K 38/177: {Receptors; Cell surface antigens; Cell surface determinants}
- C07K 14/705: Receptors; Cell surface antigens; Cell surface determinants {(tumour specific antigens C07K14/4748)}
- A61P 3/04: Anorexiants; Antiobesity agents
- A61P 5/50: for increasing or potentiating the activity of insulin
- A61P 9/10: for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
- C07K 14/47: from mammals
- C07K 2319/43: containing a FLAG-tag
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- C07K: PEPTIDES (peptides in foodstuffs A23; obtaining protein compositions for foodstuffs, working-up proteins for foodstuffs A23J; preparations for medicinal purposes A61K; peptides containing beta-lactam rings C07D; cyclic dipeptides not having in their molecule any other peptide link than those which form their ring, e.g. piperazine-2,5-diones, C07D; ergot alkaloids of the cyclic peptide type C07D519/02; macromolecular compounds having statistically distributed amino acid units in their molecules, i.e. when the preparation does not provide for a specific; but for a random sequence of the amino acid units, homopolyamides and block copolyamides derived from amino acids C08G69/00; macromolecular products derived from proteins C08H1/00; preparation of glue or gelatine C09H; single cell proteins, enzymes C12N; genetic engineering processes for obtaining peptides C12N15/00; compositions for measuring or testing processes involving enzymes C12Q; investigation or analysis of biological material G01N33/00)
- A61P: SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS

## Abstract

A biopharmaceutical agent including a 37 kDa/67 kDa laminin receptor precursor/high affinity laminin receptor (LRP/LR) and/or a fragment thereof for use in treatment and/or prevention of atherosclerosis and/or obesity and/or insulin resistance and/or diabetes. The biopharmaceutical agent may be encapsulated by functionalized or non-functionalized nanoparticles, and further may be formulated to include a carrier to provide a pharmaceutical composition for parental or non-parental administration. In use, the biopharmaceutical agent reduces lipid content in target cells. Also, a method of decreasing lipid concentration in a target cell of a human or animal subject.

## Claims

### Claim 1

A biopharmaceutical including a 37 kDa/67 kDa laminin receptor precursor/high affinity laminin receptor (LRP/LR) and/or a fragment thereof which, when administered to a target cell of a subject in need, can reduce a lipid content of the target cell and aid in the treatment and/or prevention of obesity in the subject, wherein the target cell is at least one selected from the group consisting of: endothelial cells of blood vessels, smooth muscles cells of blood vessels, pancreatic cells including alpha (α) cells, beta (β) cells, delta (δ), and gamma (γ) cells.

### Claim 2 (depends on 1)

The biopharmaceutical agent of claim 1, wherein the LRP/LR is encapsulated into a delivery means comprising nanoparticles, preferably the nanoparticles being functionalized with chemical, biochemical or biological moieties to ensure site specific delivery to the target cell, wherein the moieties act as ligands to ensure site specific delivery at the target cell.

### Claim 3 (depends on 2)

The biopharmaceutical agent of claim 2, wherein the delivery means is formulated into a pharmaceutical composition, which pharmaceutical composition including a pharmaceutical carrier for parenteral or non-parenteral administration to the subject.

### Claim 4 (depends on 3)

The biopharmaceutical agent of claim 3, wherein the pharmaceutical composition further includes an active pharmaceutical ingredient (API).

### Claim 5 (depends on 4)

The biopharmaceutical agent of claim 4, wherein the pharmaceutical composition further includes an anti-oxidant such that in use at the target cell the anti-oxidant scavenges reactive oxygen species.

### Claim 6 (depends on 1)

The biopharmaceutical agent of claim 1, wherein the LRP/LR comprises a peptide/protein sequence listing as set forth in SEQ ID NO: 1 or SEQ ID NO: 2, or a fragment thereof as set forth in SEQ ID NO: 4 or SEQ ID NO: 5.

### Claim 7 (depends on 1)

The biopharmaceutical agent of claim 1, wherein the LRP/LR forms part of a transfecting agent tor expressing a 37 kDa/67 kDa laminin receptor precursor/high affinity laminin receptor (LRP/LR) and/or a fragment thereof, preferably the transfecting agent is pCIneo-moLRP::FLAG plasmid.

### Claim 8 (depends on 2)

The biopharmaceutical agent of claim 2, wherein the nanoparticles are polymeric nanoparticles and biodegradable to provide in use a reduced risk of an immunogenic response to said polymeric nanoparticles, and further wherein the polymeric nanoparticles are biocompatible to mitigate risk of any immunogenic response to said polymeric nanoparticles, and further wherein said polymeric nanoparticles are one or more selected from the following group: eudragit, gum arabic, carrageenan, cellulose, hydroxypropyl cellulose (HPC), methylcellulose (MC), hydroxypropylmethylcellulose (HPMC), polylactic-co-glycolic acid (PLGA), chitin, pectin, amylopectic, natural rubber, polyethylene, polypropylene, polystyrene, polyamide, polyacrylonitrile, polyvinyl chloride, polyvinyl alcohol (PVA), polyethylene glycol (PEG), polyethylene oxide (PEO), poly(D-lactide) (PDLA), polylactic acid (PLLA), polygalacturonate, methylcellulose (polyacetals), poly(ε-caprolactone), phospholipids, polysaccharides, polyanionic polysaccharides, carboxymethyl cellulose, carboxymethyl amylose, chondroitin-6-sulfate, dermatin sulfate, heparin, heparin sulfate, poly(hydroxyethyl methylacrylate), collagen, fibrinogen, albumin, fibrin, acrylamide, hydroxypropyl methacrylamide-based copolymers, polyacrylamide, poly(N-isopropyl acrylamide) (pNIPAAm), polyvinylpyrrolidone, poly(methacrylic acid-g-ethylene glycol), poly(N-2-hydroxypropyl methacrylamide), poly(glycolic acid) (PGA), poly(lactic acid) (PLA), chitosan, poly(2-hydroxyethylmethacrylate) (HEMA), polyphazene, phosphorylcholine, hyaluronic acid (HA), hydroxyethyl methacrylate (HEMA), methylene-bis-acrylamide (MBAAm), poly(acrylic acid) (PAAc), poly-acrylamide (PAAm), polyacrylonitrile (PAN), polybutylene oxide (PBO), polycaprolactone (PCL), polyethylene imine) (PEI), poly(ethyl methacrylate) (PEMA), propylene fumarate (PF), poly(glucosylethyl methacrylate) (PGEMA), poly(hydroxy butyrate) (PHB), poly(hydroxyethyl methacrylate) (PHEMA), poly(hydroxypropyl methacrylamide) (PHPMA), poly(methyl methacrylate) (PMMA), poly(N-vinyl pyrrolidone) (PNVP), poly(propylene oxide) (PPO), poly(vinyl acetate) (PVAc), poly(vinyl amine), chondroitin sulfate, dextran sulfate, polylysine, gelatin, carboxymethyl chitin, dextran, agarose, pullulan, polyesters, PEG-PLA-PEG, PEG-PLGA-PEG, PEG-PCL-PEG, PLA-PEG-PLA, poly(PF-co-EG), poly(PEG/PBO-terephthalate), PEG-bis-(PLA-acrylate), PEG6CDs, PEG-g-poly(AAm-co-vinlyamine), poly(NlPAAm-co-AAc), poly(NlPAAm-co-EMA), PNVP, poly(MMA-co-HEMA), poly(AN-co-allyl sulfonate), poly(biscarboxy-phenoxy-phosphazene), poly(GEMA-sulfate), poly(PEG-co-peptides), alginate-g-(PEO-PPO-PEO), poly(PLGA-co-serine), collagen-acrylate, alginate, alginate-acrylate, poly(HPMA-g-peptide), HA-g-NIPAAm, and poly(vinyl methyl ether) (PVME), and/or derivatives of any one or more of the aforementioned.

### Claim 9 (depends on 8)

The biopharmaceutical agent of claim 8, wherein the delivery means is formulated for oral delivery and includes at least partially thereabout a coating including an inhibitor of cytochrome P450 3A4(CYP3A4) selected from the group consisting of polyethylene glycol, polyamine, polymethyl methacrylate and derivatives thereof, and wherein the coating further includes a P-glycoprotein (P-gp) efflux pump inhibitor.

### Claim 10

A method of decreasing lipid concentration in a target cell of a human or animal subject, the method comprising the following steps:
transfecting the cell to produce 37 kDa/67 kDa laminin receptor precursor/high affinity laminin receptor (LRP/LR) and/or a fragment thereof; or
providing the cell with LRP/LR and/or fragments thereof, wherein a decrease in lipid concentration in the cell treats and/or prevents obesity.

### Claim 11

A biopharmaceutical agent including a 37 kDa/67 kDa laminin receptor precursor/high affinity laminin receptor (LRP/LR) and/or a fragment thereof which, when administered to a target cell of a subject in need, can reduce a lipid content of the target cell and aid in the treatment and/or prevention of atherosclerosis, wherein the target cell is at least one selected from the group consisting of: endothelial cells of blood vessels and smooth muscles cells of blood vessels, and wherein the LRP/LR comprises a peptide/protein sequence listing as set forth in SEQ ID NO: 1 or SEQ ID NO: 2, or a fragment thereof as set forth in SEQ ID NO: 4 or SEQ ID NO: 5.

### Claim 12

A biopharmaceutical agent including a 37 kDa/67 kDa laminin receptor precursor/high affinity laminin receptor (LRP/LR) and/or a fragment thereof which, when administered to a target cell of a subject in need, can reduce a lipid content of the target cell and aid in the treatment and/or prevention of insulin resistance and/or diabetes, wherein the target cell is at least one of the following group: pancreatic cells including alpha (α) cells, beta (β) cells, delta (δ), and gamma (γ) cells, and wherein the LRP/LR comprises a peptide/protein sequence listing as set forth in SEQ ID NO: 1 or SEQ ID NO: 2, or a fragment thereof as set forth in SEQ ID NO: 4 or SEQ ID NO: 5.