PMID- 9189830 OWN - NLM STAT- MEDLINE DCOM- 19970724 LR - 20190909 IS - 0021-9304 (Print) IS - 0021-9304 (Linking) VI - 35 IP - 4 DP - 1997 Jun 15 TI - Inhibition of smooth muscle cell growth in vitro by an antisense oligodeoxynucleotide released from poly(DL-lactic-co-glycolic acid) microparticles. PG - 525-30 AB - We fabricated poly(DL-lactic-co-glycolic acid) (PLGA) 50:50 microparticles loaded with an antisense (AS) oligodeoxy-nucleotide (ODN) against the rat tenascin mRNA and determined the effect in vitro of the AS-ODN released on smooth muscle cell (SMC) proliferation and migration. AS-ODN was entrapped using a double-emulsion-solvent-extraction technique with high efficiency. Release of AS-ODN was characterized by a small initial-burst effect followed by a period of controlled AS-ODN release for up to 20 days. SMC proliferation studies exhibited dose-dependent growth inhibition with AS-ODN-loaded microparticles. Microparticles loaded with scrambled (SC) ODN showed less growth inhibition than AS-ODN. Moreover, only the AS-ODN-loaded microparticles inhibited migration. These results demonstrate the feasibility of entrapping an AS-ODN to rat tenascin in PLGA microparticles for controlled delivery to inhibit SMC proliferation and migration. FAU - Cleek, R L AU - Cleek RL AD - Cox Laboratory for Biomedical Engineering, Department of Chemical Engineering, Rice University, Houston, Texas 77251-1892, USA. FAU - Rege, A A AU - Rege AA FAU - Denner, L A AU - Denner LA FAU - Eskin, S G AU - Eskin SG FAU - Mikos, A G AU - Mikos AG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Biomed Mater Res JT - Journal of biomedical materials research JID - 0112726 RN - 0 (Drug Carriers) RN - 0 (Oligonucleotides, Antisense) RN - 0 (Polymers) RN - 0 (RNA, Messenger) RN - 0 (Tenascin) RN - 12770-88-6 (polysorb) SB - IM MH - Animals MH - Cell Division/*drug effects MH - Cell Movement/drug effects MH - Drug Carriers MH - Microspheres MH - Muscle, Smooth, Vascular/cytology/*drug effects MH - Oligonucleotides, Antisense/administration & dosage/pharmacokinetics/*pharmacology MH - *Polymers MH - RNA, Messenger/genetics MH - Rats MH - Rats, Sprague-Dawley MH - Tenascin/genetics OTO - NASA OT - Non-programmatic EDAT- 1997/06/15 00:00 MHDA- 2000/06/20 09:00 CRDT- 1997/06/15 00:00 PHST- 1997/06/15 00:00 [pubmed] PHST- 2000/06/20 09:00 [medline] PHST- 1997/06/15 00:00 [entrez] AID - 10.1002/(SICI)1097-4636(19970615)35:4<525::AID-JBM12>3.0.CO;2-A [pii] AID - 10.1002/(sici)1097-4636(19970615)35:4<525::aid-jbm12>3.0.co;2-a [doi] PST - ppublish SO - J Biomed Mater Res. 1997 Jun 15;35(4):525-30. doi: 10.1002/(sici)1097-4636(19970615)35:4<525::aid-jbm12>3.0.co;2-a.