Expression of ubiquitin and cullin-1 and its clinicopathological significance in benign and malignant lesions of the lung.
OBJECTIVE
To investigate the expression of ubiquitin and cullin-1 (cul-1) in benign and malignant lesions of the lung and to determine their clinicopathological significance.


METHODS
EnVison immunohistochemistry was used to detect the expression of ubiquitin and cul-1 in the conventional paraffin-embedded sections from the specimens of lung cancer (n = 80) and benign lesion tissues of the lung (n = 20). We also analyzed the relation of the expression of ubiquitin and cul-1 with the clinical stage, differentiation, and with or without lymphatic metastasis.


RESULTS
The positive rates of ubiquitin and cul-1 were significantly higher in lung cancer (51.3% and 60.0%) than those in benign lesion tissues of the lung (20.0% and 30.0%; P < 0.05). Positive rates of ubiquitin and cul-1 were all significantly lower in the middle and high-differentiated, Stage I approximately II, and no lymphatic metastasis patients with lung cancer than those in no- or low-differentiated, Stage III approximately IV, and lymphatic metastasis patients with lung cancer tissues (P < 0.01 approximately 0.05). High consistency was found between the positive expression of ubiquitin and cul-1 in lung cancer tissues (chi(2) = 4.04, P < 0.05).


CONCLUSIONS
Expression of ubiquitin and cul-1 in lung cancer tissues may be closely related to the carcinogenesis, progression, clinical biological behaviors, and prognosis of lung cancer.
Peng
Zaimei
Z
Department of Emergency, Second Xiangya Hospital, Central South University, Changsha 410011, China. zaimeipg@hotmail.com
Wang
Huifang
H
Shan
Changting
C
D000230:Adenocarcinoma / Q000378:metabolism / Q000473:pathology; D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology; D044842:Cullin Proteins / Q000235:genetics / Q000378:metabolism*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008175:Lung Neoplasms / Q000378:metabolism* / Q000473:pathology; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D025801:Ubiquitin / Q000235:genetics / Q000378:metabolism*
C100318:Cullin 1; D044842:Cullin Proteins; D025801:Ubiquitin