[Quantitative detection of DD3 mRNA in prostate cancer tissues by real-time fluorescent quantitative reverse transcription polymerase chain reaction].
OBJECTIVE
To analyze the expression of DD3 mRNA in the prostate tissues.


METHODS
DD3 mRNA was detected by realtime fluorescent quantitative reverse transcription polymerase chain reaction (FQ-RT-PCR) based on the Taqman technique in the tissues of 27 patients with non-prostate cancer( NPCa), 21 prostate cancer( PCa), 39 benign prostatic hyperplasia (BPH) and 15 normal prostate (NP). The ROC curve was used to evaluate the diagnostic value of DD3 mRNA.


RESULTS
DD3 mRNA expression was not detected in the NPCa tissues. The median expressions of DD3 mRNA in PCa, BPH and NP tissues were 7. 2 x 10(6), 2. 5 x 10(4) and 1.5 x 10(4) copies/mg tissue, respectively. The DD3 mRNA expression levels were significantly different between nonmalignant and malignant tissues (P < 0.01). No significant differences in DD3 mRNA expression were detected between the NP and BPH tissues and no significant correlation was found between the DD3 mRNA expression and clinical pathological parameters. The AUC-ROC was 0.937 (95% CI: 0.879 - 0.995) at cutoff value 1.4 x 10(5) copies/mg tissue. The sensitivity, specificity, accuracy, positive predictive value, negative predictive value, positive likelihood ratio and negative likelihood ratio for DD3 were 90.5%, 85.0%, 86.7%, 76.0%, 94.3%, 6.03 and 0.11 respectively.


CONCLUSIONS
The DD3 mRNA expression is confined to prostate tissues and highly upregulated in PCa tissues. It has a potential application value in the early diagnosis of prostate cancer and the follow-up of the patient.
Tao
Zhi-hua
ZH
Department of Clinical Laboratory Medicine, First Affiliated Hospital of Wenzhou Medical College, Zhejiang, China. wwwtzh@wz.zj.cn
Mao
Xiao-lu
XL
Wang
Cai-hong
CH
Chen
Xiao-dong
XD
Yu
Kai-yuan
KY
Weng
Zhi-liang
ZL
Hu
Yuan-ping
YP
Zhang
Xiao-hua
XH
Xie
Hui
H
Wang
Ou-chen
OC
Song
Qi-tong
QT
Li
Cheng-di
CD
Chen
Zhan-guo
ZG
D000368:Aged; D000369:Aged, 80 and over; D000951:Antigens, Neoplasm / Q000096:biosynthesis* / Q000235:genetics; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011470:Prostatic Hyperplasia / Q000378:metabolism / Q000473:pathology; D011471:Prostatic Neoplasms / Q000378:metabolism* / Q000473:pathology; D012333:RNA, Messenger / Q000235:genetics; D012372:ROC Curve; D020133:Reverse Transcriptase Polymerase Chain Reaction
D000951:Antigens, Neoplasm; D012333:RNA, Messenger; C479341:prostate cancer antigen 3, human