• In Vitro Antitumor Activity of BCNU-Loaded PLGA Wafer Containing Additives
  • Lee JS, An TK, Shin PK, Chae GS, Jeong JK, Lee B, Cho SH, Khang G, Lee HB
  • 첨가제 함유 BCNU/PLGA 웨이퍼의 in vitro 항암 활성
  • 이진수, 안태군, 신필경, 채강수, 정제교, 이봉, 조선행, 강길선, 이해방
Abstract
We fabricated the 1,3-bis(2-chloroethyl)-1-nitrosourea (BCNU, carmustine)-loaded PLGA wafers containing poly(N-vinylpyrrolidone) (PVP) or sodium chloride (NaCl) in order to control the release profile of drug in specific shape (3 in diameter, 1 mm in thickness) by direct compression method. In vitro release profiles of BCNU could be controlled by additives contained in the wafers. Initial release amount, release rate and duration of BCNU could be controlled with presence of PVP or NaCl. In vitro antitumor activity accessed using 9L gliosarcoma cell line has been evaluated by assaying the viability of cells treated with BCNU released from the wafers containing additives resulting in continuous growth inhibition of 9L gliosarcoma tumor cells. Specially, the continuous growth inhibition of BCNU-loaded PLGA wafers containing additives was more effective than that of non-additive BCNU-loaded PLGA wafers. The cytotoxic effect of the drug from the wafers containing NaCl as compared to wafers containing PVP was more enhanced.

약물의 방출 경향을 제어할 목적으로 폴리비닐피롤리돈 (PVP) 또는 염화나트륨을 함유한 항암제 1,3-bis(2-chloroethyl)-1-nitrosourea (BCNU, carmustine)/poly(L-lactide-co-glycolide) (PLGA) 웨이퍼를 직접 압축성형 방법에 의해 직경 3 mm와 두께 1 mm의 조건으로 제조하였다. 생체외 방출실험에서 BCNU/PLGA 웨이퍼로부터 약물 방출거동은 웨이퍼에 함유된 첨가제에 의해 조절할 수 있었다. BCNU의 초기 방출량과 방출속도 및 기간은 염화나트륨 또는 PVP의 첨가에 의해 변화하였다. 9L gliosarcoma 세포를 이용한 생체외 항암 활성 실험에서 첨가제가 함유된 웨이퍼로부터 방출된 BCNU를 처리한 세포의 생존율을 분석하여 평가했고, 그 결과 지속적으로 9L gliosarcoma 세포의 성장을 억제함을 확인하였다. 9L gliosarcoma 세포에 대한 첨가제 함유 BCNU/PLGA 웨이퍼로부터 방출된 BCNU 약효 검색을 통하여 웨이퍼로부터 BCNU가 지속적으로 방출되어 9L gliosarcoma 세포의 생존과 증식을 효과적으로 억제함을 확인하였다. 특히, 첨가제 함유 BCNU/PLGA 웨이퍼의 지속적인 성장 억제는 첨가제를 함유하지 않은 웨이퍼의 것보다 더욱 효과적이었다. 또한 염화나트륨 함유 BCNU/PLGA 웨이퍼가 PVP 함유 BCNU/PLGA 웨이퍼보다 세포 증식 억제 효과가 뛰어남을 보였다.

Keywords: brain tumor; BCNU; PLGA wafer; additives; 9L gliosarcorma cells

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This Article

  • 2003; 27(3): 217-225

    Published online May 25, 2003

  • Received on Feb 8, 2003
  • Accepted on Apr 1, 2003