[Study on STK15 gene abnormality and centrosomal amplification in laryngeal carcinoma].
OBJECTIVE
To investigate STK15 gene abnormality and centrosomal amplification in laryngeal carcinoma.


METHODS
STK15 gene mRNA expressional level was tested in 62 cases of laryngeal squamous cell carcinoma and laryngeal squamous cell carcinoma cell line Hep-2 by reverse transcription-polymerase chain reaction(RT-PCR); the mutation of STK15 gene exon 6 and exon 7 in the same tissues and cells was detected by PCR-single strand conformation polymorphism. Immunofluorescent antibodies were used to test centrosomal amplification in Hep-2 cell line as an example.


RESULTS
STK15 gene overexpressed in 39 cases of laryngeal carcinoma (63%) and Hep-2 cell line. No mutation was found in exon 6 and exon 7 of STK15 gene in the above tissues and cells. Centrosomal amplification was apparent in Hep-2 cell line. The number of centrosome in a single cell changed from 1 to 7, and Hep-2 cells with amplified centrosomes (more than 2 in one cell) were 11%-23%.


CONCLUSIONS
STK15 gene overexpression and centrosomal amplification were first found in human laryngeal squamous cell carcinoma, which indicated that STK15 gene overexpression leading to centrosomal amplification might occur in the early stage of human laryngeal carcinogenesis and be one of the key mechanisms for the occurrence of laryngeal carcinoma.
Li
Ying-hui
YH
Department of Medical Genetics, China Medical University, Shenyang, Liaoning, 110001 PR China.
Li
Fu-cai
FC
Wang
Xi
X
Zhao
Xu
X
Ye
Yan
Y
Sun
Xing-he
XH
Sun
Kai-lai
KL
D064096:Aurora Kinase A; D064127:Aurora Kinases; D018385:Centrosome / Q000473:pathology*; D005091:Exons; D006801:Humans; D007822:Laryngeal Neoplasms / Q000235:genetics* / Q000473:pathology; D009154:Mutation; D017346:Protein Serine-Threonine Kinases / Q000235:genetics*; D012333:RNA, Messenger / Q000032:analysis
D012333:RNA, Messenger; C576917:AURKA protein, human; D064096:Aurora Kinase A; D064127:Aurora Kinases; D017346:Protein Serine-Threonine Kinases