title: ICAM-3 enhances the migratory and invasive potential of human non-small cell lung cancer cells by inducing MMP-2 and MMP-9 via Akt and CREB.
abstract: We have previously reported that intercellular adhesion molecule-3 (ICAM-3) is associated with an increase of cellular radio-resistance and cancer cell proliferation. In this study, we hypothesized that ICAM-3 has an additional effect on cancer cell migration and invasion because molecules induced by ICAM-3 are known as regulators of cell migration and invasion. To examine this hypothesis, we used NCI-H1299 non-small cell lung cancer (NSCLC) cell line (p53 and PTEN null cell) and constructed an ICAM-3-over-expressing stable transfectant, which exhibited increased cell migration and invasion. The increased migration and invasion resulted from up-regulation of expression and activities of MMP-2 and MMP-9. ICAM-3 also increased Akt phosphorylation, which caused an increase in cellular migration/invasion and MMP activities. Activity of several transcriptional factors located downstream in the Akt pathway was also tested, and constitutive activation of adenosine 3', 5'-monophosphate response element-binding protein (CREB) by ICAM-3 was detected. Blockage of the Akt pathway attenuated CREB activation, and a decrease in CREB expression reduced cellular migration/invasion and activity of MMPs. This result indicates that CREB functions in the signaling pathway between Akt and MMP. We also showed ICAM-3-induced cell migration and invasion in NCI-H460 NSCLC cells (wild-type p53 and PTEN cell) through the same signaling pathway. Taken together, our findings suggest that ICAM-3 stimulates cancer cell migration/invasion via ICAM-3/Akt/CREB/MMP pathway regardless of p53 and PTEN status, and this reflects the possibility that ICAM-3 could be considered as a candidate for anti-cancer drug development and as a cancer diagnostic marker.
authors: Laboratory of Radiation Tumor Physiology, Korea Institute of Radiological and Medical Sciences, 215-4 Gongneung-Dong, Nowon-Gu, Seoul 139-706. jkpark@kcch.re.kr
authors: Jong Kuk
authors: JK
authors: Park
authors: Seon Ho
authors: SH
authors: Park
authors: Kwangsup
authors: K
authors: So
authors: In Hwa
authors: IH
authors: Bae
authors: Young Do
authors: YD
authors: Yoo
authors: Hong-Duck
authors: HD
authors: Um
mesh_terms: D015703:Antigens, CD / Q000096:biosynthesis*; D000970:Antineoplastic Agents / Q000494:pharmacology; D002289:Carcinoma, Non-Small-Cell Lung / Q000378:metabolism*; D015815:Cell Adhesion Molecules / Q000096:biosynthesis*; D045744:Cell Line, Tumor; D017362:Cyclic AMP Response Element-Binding Protein / Q000378:metabolism*; D006801:Humans; D008175:Lung Neoplasms / Q000378:metabolism*; D020778:Matrix Metalloproteinase 2 / Q000096:biosynthesis*; D020780:Matrix Metalloproteinase 9 / Q000096:biosynthesis*; D009361:Neoplasm Invasiveness; D009362:Neoplasm Metastasis; D051057:Proto-Oncogene Proteins c-akt / Q000378:metabolism*; D015398:Signal Transduction; D014945:Wound Healing
chemical_list: D015703:Antigens, CD; D000970:Antineoplastic Agents; C115163:CREB1 protein, human; D015815:Cell Adhesion Molecules; D017362:Cyclic AMP Response Element-Binding Protein; C483616:ICAM3 protein, human; C494918:AKT1 protein, human; D051057:Proto-Oncogene Proteins c-akt; D020778:Matrix Metalloproteinase 2; D020780:Matrix Metalloproteinase 9