Abstract: The invention relates to a process for the production of a mixed P?O/P?S backbone oligonucleotide comprising a selective oxidation of an intermediary phosphite triester compound of formula I into a phosphodiester compound of formula II according to the scheme with an oxidation solution obtained by mixing iodine, an organic solvent and water, characterized in that the oxidation solution has been aged for a time period that is sufficient to selectively oxidize the phosphite triester compound of formula I into the phosphodiester compound of formula II without oxidizing the phosphorothioate intenucleotide linkages.

Abstract: The invention relates to a new process for the purification of oligonucleotides which comprises the removal of an acid labile 5?hydroxy protecting group at the 5?-O-oligonucleotide terminus of the oligonucleotide by means of an on-column de-protection with an acid.

Abstract: The present invention provides a pharmaceutical composition for treating cancer, comprising at least one selected from deoxyribonucleic acids (DNA) for encoding small interfering RNA (siRNA) which complementarily binds to the base sequence of the transcript (mRNA transcript) of the FLJ25416 gene, represented by sequence number 3, sequence number 5, and sequence number 7 to inhibit the intracellular expression of the FLJ25416 gene, antisense RNA which inhibits expression of the FLJ25416 gene, and short hairpin RNA (shRNA) which inhibits expression of the FLJ25416 gene. As the siRNA, which is complementary to the base sequence of the transcript (mRNA transcript) of the FLJ25416 gene, the antisense RNA, and the shRNA, according to the present invention, inhibit expression of the FLJ25416 gene which is known to be expressed in cancer cells, and thus kill cancer cells, the composition of the present invention can be used as a novel anti-cancer agent.

Abstract: The present invention provides a pharmaceutical composition for treating cancer, comprising at least one selected from deoxyribonucleic acids (DNA) for encoding small interfering RNA (siRNA) which complementarily binds to the base sequence of the transcript (mRNA transcript) of the FLJ25416 gene, represented by sequence number 3, sequence number 5, and sequence number 7 to inhibit the intracellular expression of the FLJ25416 gene, antisense RNA which inhibits expression of the FLJ25416 gene, and short hairpin RNA (shRNA) which inhibits expression of the FLJ25416 gene. As the siRNA, which is complementary to the base sequence of the transcript (mRNA transcript) of the FLJ25416 gene, the antisense RNA, and the shRNA, according to the present invention, inhibit expression of the FLJ25416 gene which is known to be expressed in cancer cells, and thus kill cancer cells, the composition of the present invention can be used as a novel anti-cancer agent.

Abstract: The present invention provides a method for preparing nucleotide oligomers, including (a) coupling a nucleotide dimer or nucleotide trimer to a nucleoside attached to solid supports or to universal solid supports as a starting material; (b) sequentially coupling nucleotide monomers to the resulting structures of Step (a) to prepare a nucleotide oligomer; and (c) removing the nucleotide oligomers from the solid supports. The method of the present invention provides nucleotide oligomers having 15-20% higher purity than the conventional art. The present invention enables the efficient and inexpensive synthesis of nucleotide oligomers with high purity within a shorter period of time.

Abstract: The present invention provides a pharmaceutical composition for treating cancer, comprising at least one selected from deoxyribonucleic acids (DNA) for encoding small interfering RNA (siRNA) which complementarily binds to the base sequence of the transcript (mRNA transcript) of the FLJ25416 gene, represented by sequence number 3, sequence number 5, and sequence number 7 to inhibit the intracellular expression of the FLJ25416 gene, antisense RNA which inhibits expression of the FLJ25416 gene, and short hairpin RNA (shRNA) which inhibits expression of the FLJ25416 gene. As the siRNA, which is complementary to the base sequence of the transcript (mRNA transcript) of the FLJ25416 gene, the antisense RNA, and the shRNA, according to the present invention, inhibit expression of the FLJ25416 gene which is known to be expressed in cancer cells, and thus kill cancer cells, the composition of the present invention can be used as a novel anti-cancer agent.

Abstract: Provided are a composition for diagnosing cancer or screening an anticancer drug comprising an FLJ25416 gene or an antibody directed to a protein expressed from the FLJ25416 gene, a composition for treating cancer comprising an inhibitor of the gene or an inhibitor of the protein expressed from the gene and a pharmaceutically acceptable carrier, and a kit for diagnosing cancer comprising at least one of the FLJ25416 gene and the protein expressed from the FLJ25416 gene. The FLJ25416 gene is expressed at high level in specific cancer cells, and induces an increase in proliferation rate of normal cells. The expression of the gene is suppressed, which results in an inhibitory effect on cancer cell growth. Thus, the FLJ25416 gene can be used as a target gene for diagnosis or treatment of cancer.

Abstract: The present invention provides a pharmaceutical composition for treating cancer, comprising at least one selected from deoxyribonucleic acids (DNA) for encoding small interfering RNA (siRNA) which complementarily binds to the base sequence of the transcript (mRNA transcript) of the FLJ25416 gene, represented by sequence number 3, sequence number 5, and sequence number 7 to inhibit the intracellular expression of the FLJ25416 gene, antisense RNA which inhibits expression of the FLJ25416 gene, and short hairpin RNA (shRNA) which inhibits expression of the FLJ25416 gene. As the siRNA, which is complementary to the base sequence of the transcript (mRNA transcript) of the FLJ25416 gene, the antisense RNA, and the shRNA, according to the present invention, inhibit expression of the FLJ25416 gene which is known to be expressed in cancer cells, and thus kill cancer cells, the composition of the present invention can be used as a novel anti-cancer agent.

Abstract: Provided are a composition for diagnosing cancer or screening an anticancer drug comprising an FLJ25416 gene or an antibody directed to a protein expressed from the FLJ25416 gene, a composition for treating cancer comprising an inhibitor of the gene or an inhibitor of the protein expressed from the gene and a pharmaceutically acceptable carrier, and a kit for diagnosing cancer comprising at least one of the FLJ25416 gene and the protein expressed from the FLJ25416 gene. The FLJ25416 gene is expressed at high level in specific cancer cells, and induces an increase in proliferation rate of normal cells. The expression of the gene is suppressed, which results in an inhibitory effect on cancer cell growth. Thus, the FLJ25416 gene can be used as a target gene for diagnosis or treatment of cancer.

Abstract: The present invention provides a method for preparing nucleotide oligomers, including (a) coupling a nucleotide dimer or nucleotide trimer to a nucleoside attached to solid supports or to universal solid supports as a starting material; (b) sequentially coupling nucleotide monomers to the resulting structures of Step (a) to prepare a nucleotide oligomer; and (c) removing the nucleotide oligomers from the solid supports. The method of the present invention provides nucleotide oligomers having 15-20% higher purity than the conventional art. The present invention enables the efficient and inexpensive synthesis of nucleotide oligomers with high purity within a shorter period of time.