Differential expression of hypoxia inducible factor-1 alpha and tumor cell proliferation between squamous cell carcinomas and adenocarcinomas among operable non-small cell lung carcinomas.
This study aimed to evaluate whether the elevated level of hypoxia-inducible factor-1alpha (HIF-1alpha) correlated with histologic types, angiogenesis, tumor cell proliferation, and clinical parameters in common non-small cell lung carcinomas (NSCLCs). We performed immunohistochemical stains using paraffin-embedded tissue blocks from 84 cases of operable NSCLC [No. of squamous cell carcinoma (SCC), 45; No. of adenocarcinoma (AC), 39]. HIF-1alpha expression was related with histologic types (66.7% in SCCs vs 20.5% in ACs, p<0.001), but not with lymph node status, tumor stage, vascular endothelial growth factor expression, microvessel density (MVD), and proliferating cell nuclear antigen (PCNA) index (p>0.05, respectively). As for the histologic types, MVD and PCNA index were significantly higher in SCCs than in ACs (p=0.009 and p=0.016, respectively). Among HIF-1alpha positive carcinomas, MVD was significantly higher in HIF-1alpha positive SCCs than in HIF-1alpha positive ACs (p=0.023). The overall survival curves were not associated with HIF-1alpha expression or any other histologic parameters (p>0.05). These findings suggest that HIF-1alpha expression in NSCLCs may play a differential role according to histologic types, but its prognostic significance is indeterminate.
Lee
Chang Hun
CH
Department of Pathology, College of Medicine, Pusan National University, Busan, Korea. cnlee@pusan.ac.kr
Lee
Min Ki
MK
Kang
Chi Duk
CD
Kim
Young Dae
YD
Park
Do Youn
DY
Kim
Jee Yeon
JY
Sol
Mee Young
MY
Suh
Kang Suek
KS
D000230:Adenocarcinoma / Q000378:metabolism* / Q000473:pathology; D000818:Animals; D018952:Antigens, CD34 / Q000378:metabolism; D002289:Carcinoma, Non-Small-Cell Lung / Q000378:metabolism* / Q000473:pathology / Q000601:surgery; D002294:Carcinoma, Squamous Cell / Q000378:metabolism* / Q000473:pathology; D002455:Cell Division / Q000502:physiology*; D006801:Humans; D051795:Hypoxia-Inducible Factor 1, alpha Subunit; D007150:Immunohistochemistry; D008175:Lung Neoplasms; D018809:Proliferating Cell Nuclear Antigen / Q000378:metabolism; D015996:Survival Rate; D014157:Transcription Factors / Q000378:metabolism*; D042461:Vascular Endothelial Growth Factor A / Q000378:metabolism
D018952:Antigens, CD34; C497442:HIF1A protein, human; D051795:Hypoxia-Inducible Factor 1, alpha Subunit; D018809:Proliferating Cell Nuclear Antigen; D014157:Transcription Factors; D042461:Vascular Endothelial Growth Factor A