N-myc downstream regulated gene-1/Cap43 may play an important role in malignant progression of prostate cancer, in its close association with E-cadherin.
N-myc downstream regulated gene-1 (NDRG1)/Cap43 plays an important role in tumor progression and metastases in many kinds of cancers. Recently, it was reported that NDRG1/Cap43 is involved in the aggressiveness of prostate cancer and also that its expression is associated with the expression of E-cadherin in prostate carcinoma cell lines. In the current study, to elucidate the functional and pathologic roles of NDRG1/Cap43 in prostate cancer, we investigated whether the expression of NDRG1/Cap43 is associated with the clinicopathologic parameters of prostate cancer or E-cadherin expression. NDRG1/Cap43 expression and E-cadherin expression were examined immunohistochemically in 148 patients with prostate cancer. We investigated the correlation between membranous or cytoplasmic expression of NDRG1/Cap43 and E-cadherin and evaluated the prognostic or clinicopathologic significance of the expression of NDRG1/Cap43. The patients with decreased NDRG1/Cap43 membranous expression showed significantly lower disease-free survival rates compared with the patients with preserved NDRG1/Cap43 membranous expression. Decreased membranous and high cytoplasmic NDRG1/Cap43 expression was also correlated with a higher Gleason score. A significant correlation was observed between NDRG1/Cap43 membranous expression and E-cadherin membranous expression (r = 0.7130; P < .0001) and between NDRG1/Cap43 cytoplasmic expression and E-cadherin cytoplasmic expression (r = 0.5847; P < .0001). Decreased NDRG1/Cap43 membranous expression had a significant impact on patient disease-free survival in multivariate analysis (P = .0175). NDRG1/Cap43 could be a novel marker for malignant progression and poor prognosis in prostate cancer, plausibly in its close association with the down-regulation of E-cadherin expression.
Song
YooHyun
Y
Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
Oda
Yoshinao
Y
Hori
Mikifumi
M
Kuroiwa
Kentaro
K
Ono
Mayumi
M
Hosoi
Fumihito
F
Basaki
Yuji
Y
Tokunaga
Shoji
S
Kuwano
Michihiko
M
Naito
Seiji
S
Tsuneyoshi
Masazumi
M
D000368:Aged; D015820:Cadherins / Q000378:metabolism*; D018797:Cell Cycle Proteins / Q000378:metabolism*; D016009:Chi-Square Distribution; D018450:Disease Progression; D018572:Disease-Free Survival; D006801:Humans; D007150:Immunohistochemistry; D047908:Intracellular Signaling Peptides and Proteins / Q000378:metabolism*; D053208:Kaplan-Meier Estimate; D008297:Male; D011379:Prognosis; D016016:Proportional Hazards Models; D011471:Prostatic Neoplasms / Q000175:diagnosis* / Q000378:metabolism*; D000099259:N-myc Downstream-Regulated Gene 1 Protein
D015820:Cadherins; D018797:Cell Cycle Proteins; D047908:Intracellular Signaling Peptides and Proteins; D000099259:N-myc Downstream-Regulated Gene 1 Protein