Different characteristics of mitochondrial microsatellite instability between uterine leiomyomas and leiomyosarcomas.
Uterine leiomyomas are benign tumors of the uterus that arise clonally from smooth muscle cells of the myometrium and are the most common reason for hysterectomies. The aim of this study was to evaluate mitochondrial microsatellite instability (mtMSI) in uterine leiomyomas and leiomyosarcomas to clarify the molecular pathogenetic distinction between these tumors. DNA was isolated from paired normal and tumoral tissues in 50 patients with uterine leiomyomas and 14 patients with leiomyosarcomas. mtMSI was analyzed by using eight microsatellite markers. Our result showed that mitochondrial microsatellite instability was not found in all uterine leiomyomas. However, 3 (21.4%) of 14 patients with leiomyosarcomas had mtMSI and the frequencies of mtMSI in these tumors were significantly different (p < 0.01). Distinctive characteristics of mitochondrial genetic instability in uterine leiomyomas and leiomyosarcomas suggested the potential of mtMSI as a marker for differential diagnosis between them.
Lee
Jae-Ho
JH
Department of Anatomy, School of Medicine, Keimyung University, 2800 Dalgubeoldaero, Dalseo-Gu, Daegu, Republic of Korea.
Ryu
Tae-Yung
TY
Cho
Chi-Heum
CH
Kim
Dae-Kwang
DK
D001483:Base Sequence; D014408:Biomarkers, Tumor / Q000235:genetics; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007889:Leiomyoma / Q000235:genetics* / Q000473:pathology; D007890:Leiomyosarcoma / Q000235:genetics* / Q000473:pathology; D053842:Microsatellite Instability; D008928:Mitochondria / Q000235:genetics*; D008969:Molecular Sequence Data; D014594:Uterine Neoplasms / Q000235:genetics* / Q000473:pathology
D014408:Biomarkers, Tumor