Antitumor antisense sequences directed against ribonucleotide reductase

A synthetic antisense oligonucleotide comprising at least twelve nucleotides or nucleotide analogues and not longer than thirty-five nucleotides in length having a sequence complementary to the mRNA sequence of a mouse or human ribonucleotide reductase dimeric protein component R2 or sequence segment thereof wherein the antisense oligonucleotide has a nucleotide sequence as set forth in SEQ ID Nos:

• 1, 2, 12, 16, 18, 21, 25, 29, 34, 42, 44, 45, 46, 52, 53, 59, 60, 64, 65, 66, 68, 69, 70, 72, 73, 74, 76, 78, 79, 80, 90, 91, 92, 96, 99, 100, or 102 and inhibits tumor cell growth.

A synthetic antisense oligonucleotide comprising at least twelve nucleotides or nucleotide analogues and not longer than thirty-five nucleotides in length having a sequence complementary to a sequence segment of the mRNA sequence of a mouse or human ribonucleotide reductase dimeric protein component R1 wherein said antisense oligonucleotide sequence is selected to have a reduced dimer formation and reduced self-complementary interactions and inhibits tumor cell growth.

A synthetic antisense oligonucleotide comprising at least twelve nucleotides or nucleotide analogues and not longer than thirty-five nucleotides in length having a sequence segment complementary to a sequence segment of the mRNA sequence of a mouse or human ribonucleotide reductase dimeric protein component R1 wherein the antisense oligonucleotide has a nucleotide sequence selected from the group consisting of SEQ ID No:103 through SEQ ID No:161 or an analogue thereof.

A pharmaceutical composition for inhibiting tumorigenicity of a neoplastic cell in a patient comprising an amount sufficient to inhibit tumor cell growth of at least two active ingredients selected from antisense oligonucleotides at least twelve nucleotides or nucleotide analogues and not longer than thirty-five nucleotides in length having a sequence complementary to mRNA of ribonucleotide reductase dimeric protein component R2 or sequence segment thereof and a sequence complementary to a sequence segment of the mRNA of ribonucleotide reductase dimeric protein component R1 or sequence segment thereof;

• and a pharmaceutically physiologically acceptable carrier or diluent.

A method of inhibiting the tumorigenicity of neoplastic cells in a patient which method comprises contacting the neoplastic cell with an amount sufficient to inhibit tumor cell growth of at least one antisense oligonucleotide consisting of a synthetic antisense oligonucleotide comprising at least twelve nucleotides or nucleotide analogues having a sequence complementary to the mRNA sequence of ribonucleotide reductase dimeric protein component R2 or sequence segment thereof.

A method of inhibiting the tumorigenicity of neoplastic cells in a patient which method comprises contacting said neoplastic cell with an amount sufficient to inhibit tumor cell growth of at least two active compositions selected from antisense oligonucleotides having a sequence complementary to mRNA of ribonucleotide reductase dimeric protein component R2 or sequence segment thereof and a sequence complementary to mRNA of ribonucleotide reductase dimeric protein component R1 of sequence segment thereof.

A method of inhibiting the tumorigenicity of neoplastic cells resistant to chemotherapeutic drugs in a patient which method comprises identifying patients who have tumors that are resistant to a chemotherapeutic drug;

• and contacting the tumor with the chemotherapeutic drug to which the tumor is resistant and at least one active composition selected from antisense oligonucleotides having a sequence complementary to the mRNA of ribonucleotide reductase dimeric protein component R2 or sequence segment thereof or oligonucleotides having a sequence complementary to a sequence segment of the mRNA of ribonucleotide reductase dimeric protein component R1 wherein the amount of the chemotherapeutic drug and the active composition is sufficient to inhibit tumor cell growth.

A method of increasing sensitivity of neoplastic cells to chemotherapeutic drugs in a patient by contacting the tumor with at least one active composition selected from antisense oligonucleotides having a sequence complementary to the mRNA of ribonucleotide reductase dimeric protein component R2 or sequence segment thereof or oligonucleotides having a sequence complementary to a sequence segment mRNA of ribonucleotide reductase dimeric protein component R1 and with a chemotherapeutic drug.

A pharmaceutical composition for treating proliferative disorders in a patient comprising an amount sufficient to inhibit tumor cell growth of at least two active ingredients selected from antisense oligonucleotides comprising at least twelve nucleotides or nucleotide analogues and not longer than thirty-five nucleotides in length having a sequence complementary to mRNA of ribonucleotide reductase dimeric protein component R2 or sequence segment thereof and a sequence complementary to a sequence segment of the mRNA of ribonucleotide reductase dimeric protein component R1;

• and a pharmaceutically physiologically acceptable carrier or a diluent.

An isolated DNA with a sequence comprising a transcriptional initiation region and a sequence encoding an antisense oligonucleotide at least twelve nucleotides or nucleotide analogues and not longer than thirty-five nucleotides in length comprising a sequence selected from the group consisting of SEQ ID Nos:1-161.

A pharmaceutical composition for inhibiting tumor cell growth in a patient comprising an amount sufficient to inhibit tumor cell growth of an antisense oligonucleotide comprising at least twelve nucleotides or nucleotide analogues and not longer than thirty-five nucleotides in length having a sequence complementary to a mRNA sequence of ribonucleotide reductase dimeric protein component R2 or sequence segment thereof, wherein the antisense oligonucleotide is selected to have a reduced dimer formation and reduced self-complementary interactions and a pharmaceutically physiologically acceptable carrier or diluent.

A method of inhibiting metastasis of tumor cells in a patient, which method comprises administering to said patient an amount of an active composition sufficient to inhibit tumor cell growth selected from antisense oligonucleotides having a sequence complementary to mRNA of ribonucleotide reductase dimeric protein component R2 or sequence segment thereof and a sequence complementary to mRNA of ribonucleotide reductase dimeric protein component R1 or sequence segment thereof.