TY - JOUR
T1 - The peptide nucleic acid targeted to a regulatory sequence of the translocated c-myc oncogene in Burkitt's lymphoma lacks immunogenicity
T2 - Follow-up characterization of PNAEμ-NLS
AU - Cutrona, Giovanna
AU - Boffa, Lidia C.
AU - Mariani, Maria Rita
AU - Matis, Serena
AU - Damonte, Gianluca
AU - Millo, Enrico
AU - Roncella, Silvio
AU - Ferrarini, Manlio
PY - 2007
Y1 - 2007
N2 - The present study aims to evaluate the antigenicity of a PNA complementary to the Eμ sequence (PNAEμ) with cancer therapeutic potential properties in Burkitt's lymphoma (BL). In BL cells, the c-myc oncogene is repositioned next to the Eμ enhancer of the immunoglobulin (Ig) locus, due to chromosomal translocation, and up-regulated. PNAEμ linked to a nuclear localization signal peptide was shown specifically to block c-myc hyperexpression by inhibiting cell growth in vitro and in vivo. Recently, we reported that the administration of PNAEμ to mice, following inoculation with BL cells, hinders tumor growth without toxic effects. To investigate the potential use of PNAEμ in clinical applications further, we tested its antigenicity. Mice were inoculated with an emulsion of free PNA or PNA crosslinked to the immunogenic carrier keyhole limpet hemocyanin (KLH) with Freund's adjuvant. Antibodies to free PNA were undetected, whereas both IgG and IgM antibodies to PNA-KLH were detected in mouse serum 28 and 38 days after inoculation.
AB - The present study aims to evaluate the antigenicity of a PNA complementary to the Eμ sequence (PNAEμ) with cancer therapeutic potential properties in Burkitt's lymphoma (BL). In BL cells, the c-myc oncogene is repositioned next to the Eμ enhancer of the immunoglobulin (Ig) locus, due to chromosomal translocation, and up-regulated. PNAEμ linked to a nuclear localization signal peptide was shown specifically to block c-myc hyperexpression by inhibiting cell growth in vitro and in vivo. Recently, we reported that the administration of PNAEμ to mice, following inoculation with BL cells, hinders tumor growth without toxic effects. To investigate the potential use of PNAEμ in clinical applications further, we tested its antigenicity. Mice were inoculated with an emulsion of free PNA or PNA crosslinked to the immunogenic carrier keyhole limpet hemocyanin (KLH) with Freund's adjuvant. Antibodies to free PNA were undetected, whereas both IgG and IgM antibodies to PNA-KLH were detected in mouse serum 28 and 38 days after inoculation.
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U2 - 10.1089/oli.2007.9999
DO - 10.1089/oli.2007.9999
M3 - Article
C2 - 17461771
AN - SCOPUS:34247506712
VL - 17
SP - 146
EP - 150
JO - Oligonucleotides
JF - Oligonucleotides
SN - 1545-4576
IS - 1
ER -