Methods and systems for adenovirus interaction with desmoglein 2 (DSG2)

1. A recombinant polypeptide, comprising:

(a) one or more fiber polypeptide shaft domains, wherein the one or more polypeptide shaft domains each comprise an amino acid sequence according to SEQ ID NO:11;

(b) a fiber polypeptide knob domain, operatively linked to and located C-terminal to the one or more polypeptide knob domains, wherein the polypeptide knob domain comprises an amino acid sequence according to SEQ ID NO:13; and

(c) one or more non dimerization domains operatively linked to and located N-terminal to the one or more polypeptide shaft domains.

2. The recombinant polypeptide of claim 1 , wherein the polypeptide does not include an adenoviral polypeptide tail domain.

3. The recombinant polypeptide of claim 1 , wherein the one or more shaft domains comprise 1-22 shaft domains.

4. The recombinant polypeptide of claim 1 , wherein each shaft domain comprises an amino acid sequence according to SEQ ID NO 12: GVLTLKCLTPLTTTGGSLQLKVGGGLT(V/I)DDTDG(T/F)L(Q/K)ENI(G/S)ATTPLVKTGHSIGL(S/P)LG(A/P)GLGT(D/N)ENKLC(T/A)KLG(E/Q)GLTFNSNNICI(D/N)DNINTL.

5. The recombinant polypeptide of claim 1 , wherein each shaft domain comprises an amino acid sequence selected from the group consisting of SEQ ID NO:1, SEQ ID NO:2, SEQ ID NO:3, SEQ ID NO:4, and SEQ ID NO:5.

6. The recombinant polypeptide of claim 1 , wherein the knob domain comprises an amino acid sequence according to SEQ ID NO 14: WTGVNPT(E/R)ANCQ(M/I)(M/I)(D/N/A)SSESNDCKLILTLVKTGALVTAFVYVIGVSN(N/D)FNMLTT(Y/H)(R/K)NINFTAELFFDS(A/T)GNLLT(S/R)LSSLKTPLNHKSGQNMATGA(I/L)TNAK(S/G)FMPSTTAYPFN(N/D/V)NSRE(--/K)(-/E)NYIYGTC(H/Y)YTASD(H/R)TAFPIDISVMLN(Q/R)RA(I/L)(R/N)(A/D/N)(D/E)TSYCIR(IN)TWSWNTG(DN)APE(GN)QTSATTLVTSPFTFYYIREDD.

7. The recombinant polypeptide of claim 1 , wherein the knob domain comprises an amino acid sequence selected from the group consisting of SEQ ID NO:6, SEQ ID NO:7, SEQ ID NO:8, SEQ ID NO:9, and SEQ ID NO:10.

8. The recombinant polypeptide of claim 1 , wherein the dimerization domain comprises an amino acid sequence selected from the group consisting of EVSALEK (SEQ ID NO:22) and/or KVSALKE (SEQ ID NO: 23).

9. The recombinant polypeptide of claim 1 , wherein the recombinant polypeptide comprises:

(a) one or more shaft domains that each comprise an Ad3 shaft domain (SEQ ID NO:1); and

(b) a knob domain that comprises an Ad3 knob domain (SEQ ID NO:6).

10. The recombinant polypeptide of claim 9 , comprising the amino acid sequence of junction opener-1 (JO-1) (SEQ ID NO:20).

11. The recombinant polypeptide of claim 1 , wherein the polypeptide contains a single polypeptide shaft domain.

12. The recombinant polypeptide of claim 1 , wherein the polypeptide is multimerized.

13. The recombinant polypeptide of claim 1 , wherein the polypeptide is dimerized.

14. The recombinant polypeptide of claim 1 , further comprising one or more compounds conjugated to the recombinant polypeptide.

15. The recombinant polypeptide of claim 14 , wherein the one or more compounds are selected from the group consisting of therapeutics, diagnostics, and imaging agents.

16. The recombinant polypeptide of claim 15 , wherein the one or more compounds comprise at least one therapeutic, wherein the therapeutic is selected from the group consisting of antibodies, immunoconjugates, nanoparticles, chemotherapeutics, radioactive particles, viruses, vaccines, cellular immunotherapy therapeutics, gene therapy constructs, nucleic acid therapeutics, and combinations thereof.

17. A pharmaceutical composition, comprising

(a) the recombinant polypeptide of claim 1 ; and

(b) a pharmaceutically acceptable carrier.

18. The pharmaceutical composition of claim 17 , wherein the recombinant polypeptide is multimerized.

19. The pharmaceutical composition of claim 17 , wherein the recombinant polypeptide comprises a dimer of the polypeptide of SEQ ID NO:20.

20. The pharmaceutical composition of claim 17 , further comprising an amount of one or more therapeutics sufficient to treat a disorder associated with epithelial tissue, a diagnostic sufficient to diagnose a disorder associated with epithelial tissue, and/or an imaging agent sufficient to image an epithelial tissue.