Biomaterial Database

P-selectin-mediated attachment of small cell lung carcinoma to endothelial cells. 1996

S T Pottratz, and T D Hall, and W M Scribner, and H N Jayaram, and V Natarajan

Laboratory for Experimental Oncology, Indiana University School of Medicine, Indianapolis 46202, USA.

Small cell lung carcinoma (SCLC) frequently metastasizes early in the course of the disease. P-selectin (P-sel), a cell adhesion molecule expressed on activated platelets and endothelial cells (EC), has previously been demonstrated to mediate binding of platelets to SCLC. We hypothesized that P-sel facilitates attachment of SCLC to EC, acting as an important factor in SCLC metastasis. To test this hypothesis, attachment of H82 cells (SCLC cell line) to EC was quantified. Attachment of H82 cells to 12-O-tetradecanoylphorbol-13-acetate (TPA)-activated EC was increased compared with control EC. Increased attachment of H82 cells to EC was apparent after 10 min of TPA activation, reached a peak after 30 min, and returned to baseline after 120 min of exposure. The TPA-induced increase in H82 cell attachment to EC was inhibited by addition of anti-P-sel antibodies but not by addition of anti-E-selectin antibodies. The TPA-induced increase in H82 cell attachment was likely mediated by activation of EC protein kinase C (PKC). Pretreatment of the EC with PKC inhibitors effectively blocked the TPA-mediated increase in H82 cell attachment. In addition, prolonged exposure of EC to TPA resulted in decreased expression of the PKC-alpha and PKC-epsilon isoforms. These data indicate for the first time that attachment of SCLC to activated EC appears to be mediated by increased expression of P-sel on the EC surface, which may result from activation of specific isoforms of PKC.

UI	MeSH Term	Description	Entries
D008175	Lung Neoplasms	Tumors or cancer of the LUNG.	Cancer of Lung,Lung Cancer,Pulmonary Cancer,Pulmonary Neoplasms,Cancer of the Lung,Neoplasms, Lung,Neoplasms, Pulmonary,Cancer, Lung,Cancer, Pulmonary,Cancers, Lung,Cancers, Pulmonary,Lung Cancers,Lung Neoplasm,Neoplasm, Lung,Neoplasm, Pulmonary,Pulmonary Cancers,Pulmonary Neoplasm
D002273	Carcinogens	Substances that increase the risk of NEOPLASMS in humans or animals. Both genotoxic chemicals, which affect DNA directly, and nongenotoxic chemicals, which induce neoplasms by other mechanism, are included.	Carcinogen,Oncogen,Oncogens,Tumor Initiator,Tumor Initiators,Tumor Promoter,Tumor Promoters,Initiator, Tumor,Initiators, Tumor,Promoter, Tumor,Promoters, Tumor
D002417	Cattle	Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor.	Beef Cow,Bos grunniens,Bos indicus,Bos indicus Cattle,Bos taurus,Cow,Cow, Domestic,Dairy Cow,Holstein Cow,Indicine Cattle,Taurine Cattle,Taurus Cattle,Yak,Zebu,Beef Cows,Bos indicus Cattles,Cattle, Bos indicus,Cattle, Indicine,Cattle, Taurine,Cattle, Taurus,Cattles, Bos indicus,Cattles, Indicine,Cattles, Taurine,Cattles, Taurus,Cow, Beef,Cow, Dairy,Cow, Holstein,Cows,Dairy Cows,Domestic Cow,Domestic Cows,Indicine Cattles,Taurine Cattles,Taurus Cattles,Yaks,Zebus
D002448	Cell Adhesion	Adherence of cells to surfaces or to other cells.	Adhesion, Cell,Adhesions, Cell,Cell Adhesions
D002460	Cell Line	Established cell cultures that have the potential to propagate indefinitely.	Cell Lines,Line, Cell,Lines, Cell
D004730	Endothelium, Vascular	Single pavement layer of cells which line the luminal surface of the entire vascular system and regulate the transport of macromolecules and blood components.	Capillary Endothelium,Vascular Endothelium,Capillary Endotheliums,Endothelium, Capillary,Endotheliums, Capillary,Endotheliums, Vascular,Vascular Endotheliums
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013755	Tetradecanoylphorbol Acetate	A phorbol ester found in CROTON OIL with very effective tumor promoting activity. It stimulates the synthesis of both DNA and RNA.	Phorbol Myristate Acetate,12-Myristoyl-13-acetylphorbol,12-O-Tetradecanoyl Phorbol 13-Acetate,Tetradecanoylphorbol Acetate, 4a alpha-Isomer,12 Myristoyl 13 acetylphorbol,12 O Tetradecanoyl Phorbol 13 Acetate,13-Acetate, 12-O-Tetradecanoyl Phorbol,Acetate, Phorbol Myristate,Acetate, Tetradecanoylphorbol,Myristate Acetate, Phorbol,Phorbol 13-Acetate, 12-O-Tetradecanoyl,Tetradecanoylphorbol Acetate, 4a alpha Isomer
D018288	Carcinoma, Small Cell	An anaplastic, highly malignant, and usually bronchogenic carcinoma composed of small ovoid cells with scanty neoplasm. It is characterized by a dominant, deeply basophilic nucleus, and absent or indistinct nucleoli. (From Stedman, 25th ed; Holland et al., Cancer Medicine, 3d ed, p1286-7)	Carcinoma, Oat Cell,Oat Cell Carcinoma,Small Cell Carcinoma,Carcinomas, Oat Cell,Carcinomas, Small Cell,Oat Cell Carcinomas,Small Cell Carcinomas