共 51 条
α-Smooth Muscle Actin Expressing Stroma Promotes an Aggressive Tumor Biology in Pancreatic Ductal Adenocarcinoma
被引:80
作者:
Fujita, Hayato
[1
]
Ohuchida, Kenoki
[1
,2
]
Mizumoto, Kazuhiro
[1
,3
]
Nakata, Kohei
[1
,4
]
Yu, Jun
[1
]
Kayashima, Tadashi
[1
]
Cui, Lin
[1
]
Manabe, Tatsuya
[1
]
Ohtsuka, Takao
[1
]
Tanaka, Masao
[1
]
机构:
[1] Kyushu Univ, Dept Surg & Oncol, Grad Sch Med Sci, Fukuoka 8128582, Japan
[2] Kyushu Univ, Dept Adv Med Initiat, Grad Sch Med Sci, Fukuoka 8128582, Japan
[3] Kyushu Univ, Hosp Canc Ctr, Fukuoka 8128582, Japan
[4] Kyushu Univ, Grad Sch Med Sci, Dept Anat Pathol, Fukuoka 8128582, Japan
来源:
关键词:
alpha-smooth muscle actin;
pancreatic stellate cells;
pancreatic cancer;
reverse transcription-polymerase chain reaction;
formalin-fixed;
paraffin-embedded sample;
PARAFFIN-EMBEDDED TISSUES;
POLYMERASE CHAIN-REACTION;
STELLATE CELLS;
GENE-EXPRESSION;
BREAST-CANCER;
DESMOPLASTIC REACTION;
CURATIVE RESECTION;
PROGNOSTIC-FACTORS;
SPARC EXPRESSION;
CARCINOMA CELLS;
D O I:
10.1097/MPA.0b013e3181dbf647
中图分类号:
R57 [消化系及腹部疾病];
学科分类号:
摘要:
Objectives: Pancreatic ductal adenocarcinoma (PDAC) is often characterized by a prominent desmoplastic stroma that is induced partially by alpha-smooth muscle actin (SMA)-expressing activated pancreatic stellate cells (PSCs). This study aimed to investigate the significance of alpha-SMA expression in PDAC and the correlation between alpha-SMA mRNA levels and the patient prognosis. Methods: We obtained formalin- fixed, paraffin- embedded tissue samples from 109 patients with PDAC, who underwent pancreatectomy at our institution from 1992 to 2007. We measured alpha-SMA mRNA levels by quantitative real- time reverse transcription-polymerase chain reaction and investigated the association of alpha-SMA mRNA expression with clinicopathologic parameters and survival time. We also assessed the influence of activated PSCs on malignant behaviors of pancreatic cancer cells using in vitro experiments. Results: alpha-SMA immunoreactivity was detected exclusively in the stroma of PDAC. The group with high alpha-SMA expression showed a significantly shorter survival, as shown by univariate analysis (P = 0.005) and multivariate analysis (P < 0.0001). alpha-SMA-expressing activated PSCs enhanced the invasiveness, proliferation, and colony formation of pancreatic cancer cells. Conclusions: Quantitative analysis of alpha-SMA mRNA expression using formalin- fixed, paraffin- embedded tissue samples was useful to predict the prognosis of patients with PDAC. Activated PSCs may regulate the malignant behavior of pancreatic cancer cells.
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页码:1254 / 1262
页数:9
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