TY - JOUR
T1 - Controlled cocultures of HeLa cells and human umbilical vein endothelial cells on detachable substrates
AU - Kaji, Hirokazu
AU - Yokoi, Takeshi
AU - Kawashima, Takeaki
AU - Nishizawa, Matsuhiko
PY - 2009/1/1
Y1 - 2009/1/1
N2 - We investigated the interactions between HeLa cells and human umbilical vein endothelial cells (HUVECs) by monitoring their movements in a controllable coculture system. Two complementary, detachable, cell-substrates, one of polystyrene (PS) and the other of poly(dimethylsiloxane) (PDMS), were fabricated by replica molding. Coculturing was started by mechanically assembling two complementary substrates. One substrate was covered with a confluent layer of HeLa cells and its complement covered with confluent HUVECs. Using this coculture system as a tumor/endothelium model, we found that the HeLa cells migrated towards the HUVECs, while, simultaneously, the HUVECs retreated and that both types of cells migrated approximately twice as rapidly (two hundred microns per twenty-four hours) as they did alone. Additionally, when direct contact between the two cell types was prevented, the HUVECs initially migrated towards the HeLa cells and then retreated. The characteristics of the cell movements, i.e. direction and speed, probably are consequences of cell-cell signaling, with such signals possibly important during tumor cell intra- and extravasation.
AB - We investigated the interactions between HeLa cells and human umbilical vein endothelial cells (HUVECs) by monitoring their movements in a controllable coculture system. Two complementary, detachable, cell-substrates, one of polystyrene (PS) and the other of poly(dimethylsiloxane) (PDMS), were fabricated by replica molding. Coculturing was started by mechanically assembling two complementary substrates. One substrate was covered with a confluent layer of HeLa cells and its complement covered with confluent HUVECs. Using this coculture system as a tumor/endothelium model, we found that the HeLa cells migrated towards the HUVECs, while, simultaneously, the HUVECs retreated and that both types of cells migrated approximately twice as rapidly (two hundred microns per twenty-four hours) as they did alone. Additionally, when direct contact between the two cell types was prevented, the HUVECs initially migrated towards the HeLa cells and then retreated. The characteristics of the cell movements, i.e. direction and speed, probably are consequences of cell-cell signaling, with such signals possibly important during tumor cell intra- and extravasation.
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U2 - 10.1039/b812510d
DO - 10.1039/b812510d
M3 - Article
C2 - 19156292
AN - SCOPUS:58649092363
VL - 9
SP - 427
EP - 432
JO - Lab on a Chip - Miniaturisation for Chemistry and Biology
JF - Lab on a Chip - Miniaturisation for Chemistry and Biology
SN - 1473-0197
IS - 3
ER -