Molecular Cloning of Canine nm23 cDNAs and Their Expression in Normal and Tumor Tissues
2005
Two canine nm-23 cDNAs, designated as nm23-C1 and -C2, were isolated and characterized. Both have a putative open read- ing frame consisting of 459-bp encoding 152 amino acids and are highly similar to human, mouse and rat homologues. To understand the potential role of nm23-C1 and -C2 in the development of mammary gland tumors (MGT), we analyzed the mRNA expression in 14 MGT samples by RT-PCR. The samples were divided into categories according to their histopathology (benign/malignant) and metasta- sis. No significant difference in the mRNA expression levels of either nm23-C1 or -C2 were observed between the benign and malignant groups or the metastatic and non-metastatic groups. These results suggest that nm23-C1 and -C2 are not related to the establishment of malignancy and metastatic lesions in canine MGT cases.
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