Overexpression of interleukin-10 in sentinel lymph node with breast cancer.
BACKGROUND
In breast carcinoma, identification of tumor cells in the sentinel lymph nodes is a predictor of the tumor's metastatic potential. Sentinel lymph node may be targeted not only by tumor cell metastasis but also by cytokines from the emergence of antitumor immune responses.


METHODS
Between February 2003 and February 2004, the investigator evaluated 38 cases that underwent sentinel lymph node biopsy at the Samsung Medical Center. Eighty paraffin-embedded sections, 49 sentinel, and 31 nonsentinel lymph node, from breast carcinoma without lymphatic metastases were analyzed by real-time polymerase chain reaction to evaluate the cytokine profile (interferon-gamma, interleukin-2, interleukin-10 and interleukin-12) for the T cell response.


RESULTS
A higher expression of interleukin-10 was observed in sentinel lymph node than in nonsentinel lymph node (P = 0.03). The expressions of interferon-gamma, interleukin-2, and interleukin-12 were similar between sentinel and nonsentinel lymph node.


CONCLUSIONS
Theses results indicate that T cell response was downregulated by interleukin-10 overexpression in sentinel lymph node with breast cancer.
Woo
Sang Uk
SU
Department of Surgery, Korea University College of Medicine, Seoul, Korea.
Bae
Jeoung Won
JW
Yang
Jung-Hyun
JH
Kim
Jung Han
JH
Nam
Seok Jin
SJ
Shin
Young Kee
YK
D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D018270:Carcinoma, Ductal, Breast / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D002285:Carcinoma, Intraductal, Noninfiltrating / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D005260:Female; D006801:Humans; D007371:Interferon-gamma / Q000235:genetics / Q000378:metabolism; D016753:Interleukin-10 / Q000378:metabolism*; D018664:Interleukin-12 / Q000235:genetics / Q000378:metabolism; D007376:Interleukin-2 / Q000235:genetics / Q000378:metabolism; D008198:Lymph Nodes / Q000378:metabolism* / Q000473:pathology; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D021701:Sentinel Lymph Node Biopsy; D013601:T-Lymphocytes / Q000276:immunology / Q000378:metabolism / Q000473:pathology
D007376:Interleukin-2; D012333:RNA, Messenger; D016753:Interleukin-10; D018664:Interleukin-12; D007371:Interferon-gamma