[Expression and distribution of monocyte chemotactic protein-3 and its significance in laryngeal carcinoma].
OBJECTIVE
To investigate monocyte chemotactic protein-3 (MCP-3) mRNA and protein expression and distribution in laryngeal squamous cell carcinoma (LSCC) tissue, so as to study its function in the tumor development.


METHODS
Immunohistochemical staining and RT-PCR, and western blot were performed to detect the LSCC tissue and the normal tissue adjacent tumor.


RESULTS
The expression of MCP-3 mRNA and protein were found in the LSCC tissue and the normal tissue adjacent tumor. The expression of MCP-3 mRNA and protein in LSCC tissue is much higher than that in normal tissue adjacent tumor (P<0.05). There is a significant difference between I-II stage III-IV stage (P<0.05). Immunohistochemical staining: positive staining of MCP-3 was yellow and mainly detected in the tumor cell cytoplasm and also in some normal glandular epitheliums.


CONCLUSIONS
MCP-3 might be involved in the mechanism of the tumor development, its function of chemotaxis and activation of the tumor-associated macrophages would be highlighted, so that the inflammatory microenvironment might play an important role in the development of tumor.
Li
Lin
L
Department of Otolaryngology Head and Neck Surgery, China-Japan Friendship Hospital, Jilin University, Jilin, 130033, China.
Zhu
Dongdong
D
Dong
Zhen
Z
D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology; D054410:Chemokine CCL7 / Q000378:metabolism*; D005260:Female; D006801:Humans; D007822:Laryngeal Neoplasms / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D012333:RNA, Messenger / Q000235:genetics
C515450:CCL7 protein, human; D054410:Chemokine CCL7; D012333:RNA, Messenger