Mussel inspired nanocomposite adhesives for biomedical applications

1. A tissue adhesive composition comprising:

a biodegradable adhesive;

nanoparticles; and

a tissue regenerative agent,

wherein the nanoparticles are loaded with the tissue regenerative agent, and

wherein the composition has a lap shear strength greater than 35 kPa when adhered to a biological tissue to tissue interface for 1 hour,

wherein the biodegradable adhesive comprises a dopamine grafted alginate, polytripeptide (Gly-Tyr-Lys), Mussel Adhesive Protein (MAP), polyethylene glycol (PEG-DOPA), hyaluronic acid (HA) on Pluronic hydrogel, catechol-Ala-Ala-PEG (CAAPEG), poly ((Lys·HBr) x -(DOPA) y ), deacetylated chitosan, oxidized and DOPA-functionalized dextran, PEG-dopamine-polycaprolactone (PCL), injectable citrate-based mussel-inspired bioadhesives iCMBAs, anti-bacterial and anti-fungal iCMBAs (AbAf iCs), click iCs, ethylene glycol acrylate methacrylate dopamine (EGAMA-DOPA), poly (dopamine-co-acrylate) (PDA), rfp-1 (MAP), light-activated, mussel protein-based bioadhesive (LAMBA), PEU (poly (CATyr-co-Leu)), PEU (poly (CA-Ser-co-Leu-co-PPG)), POEC-d (octanediol, PEO, citric acid, dopamine), DCTA (gelatin macromer, Fe 3+ , genipin), a polyester, 4-arm-PEG-DA, 4-arm-PEG-PBA, polypeptide-pluronic-polypeptide, or any combination thereof;

wherein the biodegradable adhesive is present in a concentration of 1 to 40 wt. % and comprises a polymer having a weight average molecular weight of 20,000-200,000;

wherein the nanoparticles comprise poly (lactic acid) (PLA), poly (glycolic acid) (PGA), poly (lactide-co-glycolide) (“PLGA”), poly (lactide-co-glycolide) N-hydroxysuccinimide (“PLGA-NHS”), poly (lactide-co-glycolide) polydopamine (“PLGA-Dopa”), polydopamine, hyaluronic acid-dopamine, silica, poly-(ethylene glycol) (PEG), poly (acryl amide) (PAA), poly (vinyl pyrrolidone) (PVP), poly (caprolactone) (PCL), chitosan, poly-alkyl-cyano-acrylates (PAC), gelatin or any combination thereof;

wherein the nanoparticles have an average particle size in any dimension of 50 nm to 500 nm;

wherein the tissue regenerative agent comprises a cell recruitment agent, a tissue growth factor, a protein, a microRNA, an exosome, or any combination thereof;

wherein the tissue regenerative agent comprises a cell recruitment agent; and

wherein the cell recruitment agent is stromal cell derived factor-1 alpha (“SDF-1α”).

2. The composition of claim 1 , wherein the biodegradable adhesive comprises a functionalized biopolymer.

3. The composition of claim 1 , wherein the biodegradable adhesive is a dopamine-grafted biopolymer.

4. The composition of claim 3 , wherein the biodegradable adhesive comprises a dopamine-grafted alginate.

5. The composition of claim 4 , wherein the dopamine-grafted alginate is crosslinked to form a hydrogel.

6. The composition of claim 1 , wherein the nanoparticles are biodegradable.

7. The composition of claim 6 , wherein the nanoparticles comprise PLGA and/or PLGA-NHS having a weight average molecular weight of 50,000-120,000.

8. The composition of claim 1 , wherein the nanoparticles have an average particle size in any dimension of 250 nm or less.

9. The composition of claim 1 , wherein the nanoparticles are present in a concentration of up to 15 wt. %.

10. The composition of claim 1 , wherein the composition has a lap shear strength of a least 20 kPA when adhered to a biological tissue to tissue interface.

11. The composition of claim 1 , wherein the cell recruitment agent recruits mesenchymal stromal/stem cells (“MSCs”), hematopoietic stem cell (“HSC”), and/or endothelial progenitor cell (“EPC”).

12. The composition of claim 1 , wherein the cell recruitment agent increases regenerative cell populations within a biological environment where the composition is present.

13. The composition of claim 1 , wherein the tissue regenerative agent is released from the composition into the biological environment over 1-50 days.

14. The composition of claim 12 , wherein the biological environment is mammalian tissue.

15. The composition of claim 1 , wherein the tissue regenerative agent is encapsulated in the nanoparticles.

16. A method of adhering tissue comprising:

applying a film of a composition according to claim 1 to a first surface of a first biological tissue;

contacting a second surface of a second biological tissue with the first surface of the first biological tissue,

wherein the film of the composition is positioned between and in contact with both the first surface and the second surface.

17. A tissue adhesive composition comprising:

a biodegradable adhesive;

nanoparticles; and

a tissue regenerative agent,

wherein the nanoparticles are loaded with the tissue regenerative agent, and wherein the composition has a lap shear strength greater than 35 kPa when adhered to a biological tissue to tissue interface for 1 hour,

wherein the biodegradable adhesive is present in a concentration of 1 to 40 wt. % and comprises a polymer having a weight average molecular weight of 20,000-200,000;

wherein the biodegradable adhesive comprises a dopamine grafted alginate;

wherein the nanoparticles have an average particle size in any dimension of 50 nm to 500 nm;

wherein the nanoparticles comprise poly (lactide-co-glycolide) (“PLGA”); and

wherein the tissue regenerative agent comprises stromal cell derived factor-1 alpha (“SDF-1α”).