ARTIFICIAL NUCLEIC ACID MOLECULES

1 . An artificial nucleic acid molecule comprising:

a. at least one open reading frame (ORF); and

b. at least one 3′-untranslated region element (3′-UTR element) and/or at least one 5′-untranslated region element (5′-UTR element), wherein the at least one 3′-UTR element and/or the at least one 5′-UTR element prolongs and/or increases protein production from said artificial nucleic acid molecule and wherein the at least one 3′-UTR element and/or the at least one 5′-UTR element is derived from a stable mRNA.

2 . The artificial nucleic acid molecule according to claim 1 , wherein the open reading frame is derived from a gene, which is distinct from a gene from which the at least one 3′-UTR element and/or the at least one 5′-UTR element is derived.

3 . The artificial nucleic acid molecule according to claim 1 comprising at least one 3′-UTR element and at least one 5′-UTR element.

4 . The artificial nucleic acid molecule according to claim 3 , wherein each of the at least one open reading frame, the at least one 3′-UTR element and the at least one 5′-UTR element are heterologous to each other.

5 - 7 . (canceled)

8 . The artificial nucleic acid molecule according to claim 1 , wherein the at least one 3′-UTR element and/or the at least one 5′-UTR element comprises or consists of a nucleic acid sequence which is derived from the 3′-UTR and/or the 5′-UTR of a eukaryotic protein coding gene, preferably from the 3′-UTR and/or the 5′-UTR of a vertebrate protein coding gene, more preferably from the 3′-UTR and/or the 5′-UTR of a mammalian protein coding gene, even more preferably from the 3′-UTR and/or the 5′-UTR of a primate protein coding gene.

9 . (canceled)

10 . The artificial nucleic acid molecule according to claim 8 , wherein:

(i) the nucleic acid molecule comprises at least one 3′-UTR element and at least one 5′-UTR element;

(ii) the at least one 3′-UTR element, the at least one 5′-UTR element and the at least one open reading frame are all heterologous to each other;

(iii) the at least one 3′ UTR element is derived from a gene selected from the group consisting of: housekeeping genes, genes coding for a membrane protein, genes involved in cellular metabolism, genes involved in transcription, translation and replication processes, genes involved in protein modification and genes involved in cell division; and

(iv) the 3′UTR is not derived from a gene coding for a ribosomal protein or from the Fig4 gene.

11 . (canceled)

12 . The artificial nucleic acid molecule according to claim 10 , wherein:

(i) the nucleic acid molecule comprises at least one 3′-UTR element and at least one 5′-UTR element;

(ii) the at least one 3′-UTR element, the at least one 5′-UTR element and the at least one open reading frame are all heterologous to each other;

(iii) the at least one 3′ UTR element is derived from a human or a murine gene selected from the group consisting of: housekeeping genes, genes coding for a membrane protein, genes involved in cellular metabolism, genes involved in transcription, translation and replication processes, genes involved in protein modification and genes involved in cell division;

(iv) the 3′UTR is not derived from a gene coding for a ribosomal protein or for albumin or from the Fig4 gene;

(v) the at least one 5′-UTR element is derived from a human or a murine gene selected from the group consisting of: housekeeping genes, genes coding for a membrane protein, genes involved in cellular metabolism, genes involved in transcription, translation and replication processes, genes involved in protein modification and genes involved in cell division; and

(vi) the 5′-UTR is not a 5′ TOP UTR.

13 - 24 . (canceled)

25 . The artificial nucleic acid molecule according to claim 1 , wherein the at least one 3′-UTR element comprises or consists of a nucleic acid sequence which has an identity of at least about 50%, preferably of at least about 60%, preferably of at least about 70%, more preferably of at least about 80%, more preferably of at least about 90%, even more preferably of at least about 95%, even more preferably of at least about 99% to a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 1 to 24 and SEQ ID NOs: 49 to 318 or wherein the at least one 3′-UTR element comprises or consists of a fragment of a nucleic acid sequence which has an identity of at least about 40%, preferably of at least about 50%, preferably of at least about 60%, preferably of at least about 70%, more preferably of at least about 80%, more preferably of at least about 90%, even more preferably of at least about 95%, even more preferably of at least about 99% to fragment of a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 1 to 24 and SEQ ID NOs: 49 to 318.

26 . The artificial nucleic acid molecule according claim 1 , wherein the at least one 5′-UTR element comprises or consists of a nucleic acid sequence which has an identity of at least about 50%, preferably of at least about 60%, preferably of at least about 70%, more preferably of at least about 80%, more preferably of at least about 90%, even more preferably of at least about 95%, even more preferably of at least about 99% to a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 25 to 30 and SEQ ID NOs: 319 to 382 or wherein the at least one 5′-UTR element comprises or consists of a fragment of a nucleic acid sequence which has an identity of at least about 40%, preferably of at least about 50%, preferably of at least about 60%, preferably of at least about 70%, more preferably of at least about 80%, more preferably of at least about 90%, even more preferably of at least about 95%, even more preferably of at least about 99% to a nucleic acid sequence selected from the group consisting of SEQ ID NOs: 25 to 30 and SEQ ID NOs: 319 to 382.

27 . (canceled)

28 . The artificial nucleic acid molecule according to claim 1 , wherein the at least one 3′-UTR element and/or the at least one 5′-UTR element exhibits a length of between 3 and about 500 nucleotides, preferably of between 5 and about 150 nucleotides, more preferably of between 10 and 100 nucleotides, even more preferably of between 15 and 90, most preferably of between 20 and 70.

29 . The artificial nucleic acid molecule according claim 1 further comprising

c. a poly(A) sequence and/or a polyadenylation signal.

30 - 33 . (canceled)

34 . The artificial nucleic acid molecule according to claim 1 , further comprising a 5′-cap structure, a poly(C) sequence, a histone stem-loop, and/or an IRES-motif.

35 . The artificial nucleic acid molecule according to claim 1 , wherein the histone stem-loop comprises a sequence according to SEQ ID NO: 34.

36 . The artificial nucleic acid molecule according to claim 1 , wherein the nucleic acid comprises a promoter.

37 . The artificial nucleic acid molecule according to claim 1 , wherein the nucleic acid comprises a 5′-TOP UTR.

38 . The artificial nucleic acid molecule according to claim 1 , wherein the nucleic acid comprises a 3′-UTR, which comprises or consists of a nucleic acid sequence which is derived from a 3′-UTR of an albumin gene.

39 - 41 . (canceled)

42 . A vector comprising an artificial nucleic acid molecule according to claim 1 .

43 - 46 . (canceled)

47 . A cell comprising the artificial nucleic acid molecule according to claim 1 .

48 - 49 . (canceled)

50 . A pharmaceutical composition comprising the artificial nucleic acid molecule according to claim 1 .

51 - 53 . (canceled)

54 . A method for treating or preventing a disorder comprising administering the artificial nucleic acid molecule according to claim 1 .

55 . A method of treating or preventing a disorder comprising transfection of a cell with an artificial nucleic acid molecule according to claim 1 .

56 - 80 . (canceled)