PMID- 15461929 OWN - NLM STAT- MEDLINE DCOM- 20041129 LR - 20191109 IS - 0898-2104 (Print) IS - 0898-2104 (Linking) VI - 14 IP - 1-2 DP - 2004 TI - Transendothelial movement of liposomes in vitro mediated by cancer cells, neutrophils or histamine. PG - 1-25 AB - A two-chamber culture system has been used to examine the ability of small liposomes to cross an endothelial cell barrier in response to various stimuli. Transendothelial transit of liposomes was almost negligible in the presence of intact, healthy endothelial cells (EC). Addition of histamine induced a concentration-dependent increase in the movement of liposomes across the EC monolayer. In the presence of polymorphonuclear neutrophils (PMNs), migrating in response to a chemotactic gradient of N-Formil-Met-Leu-Phe (fMLP), both liposomes and IgG crossed EC monolayer by a paracellular pathway, largely independent of an association with the PMNs. The presence of cancer cell, growing in the lower chamber or the presence of cancer cell-conditioned media, also resulted in the passage of liposome across the EC. We conclude that EC monolayers are sufficiently disrupted by several physiologically relevant stimuli to allow for the transendothelial passage of liposomes. These results have important implications for the therapeutic use of liposome in the treatment of cancer or other inflammatory processes. FAU - Antohe, Felicia AU - Antohe F AD - Institute of Cellular Biology and Pathology N. Simionescu, Bucharest, Romania. FAU - Lin, Lei AU - Lin L FAU - Kao, Grace Y AU - Kao GY FAU - Poznansky, Mark J AU - Poznansky MJ FAU - Allen, Theresa M AU - Allen TM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Liposome Res JT - Journal of liposome research JID - 9001952 RN - 0 (Collagen Type I) RN - 0 (Culture Media, Conditioned) RN - 0 (Immunoglobulin G) RN - 0 (Liposomes) RN - 59880-97-6 (N-Formylmethionine Leucyl-Phenylalanine) RN - 820484N8I3 (Histamine) SB - IM MH - Animals MH - Brain Neoplasms/*pathology MH - Cattle MH - Cell Culture Techniques/methods MH - Cell Line, Tumor MH - Cell Membrane Permeability/drug effects MH - Chemotaxis, Leukocyte/drug effects MH - Collagen Type I/metabolism MH - Colonic Neoplasms/*pathology MH - Culture Media, Conditioned/pharmacology MH - Endothelium, Vascular/*metabolism/physiology/ultrastructure MH - Histamine/*pharmacology MH - Humans MH - Immunoglobulin G/pharmacology MH - *Liposomes MH - N-Formylmethionine Leucyl-Phenylalanine/pharmacology MH - Neutrophils/drug effects/*physiology/ultrastructure EDAT- 2004/10/06 09:00 MHDA- 2004/12/16 09:00 CRDT- 2004/10/06 09:00 PHST- 2004/10/06 09:00 [pubmed] PHST- 2004/12/16 09:00 [medline] PHST- 2004/10/06 09:00 [entrez] AID - 120039660 [pii] AID - 10.1081/lpr-120039660 [doi] PST - ppublish SO - J Liposome Res. 2004;14(1-2):1-25. doi: 10.1081/lpr-120039660.