Hyeon Jin Jeon*, **,† , Woo Sung Lee*, Hak Jin Song*, and Hyung Joo Kim**
*R&D Ceneter, ROSELAB Inc, 209 Bongeunsa-ro, Gangnam-gu, Seoul 06109, Korea
**Department of Biological Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
*㈜로즈랩, R&D센터
**건국대학교 생물공학과
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We synthesized the triblock copolymers consisting of poly(ethylene glycol) (PEG) (Mn 4000 g/mole) and polycaprolactone (PCL) by ring-opening polymerization of ε-caprolactone with poly(ethylene glycol) as an initiator the stannous octoate. The 20 wt% aqueous solution of PCL-PEG-PCL triblock copolymer was exhibited a size of approximately 314 nm by DLS. To confirm the in vivo neocollagenesis, we observed the collagen fiber density in the dermis of Sprague-Dawly (SD) rat after injection of 20 wt% aqueous solution of the PCL-PEG-PCL triblock copolymer. we observed the collagen fiber density was 12% higher in the 8-week group compared to the PBS-injection control group. Furthermore, we confirmed that the presence of injected PCL-PEG-PCL particle at 1 week. In this study, we evaluated in vivo biodegradability and neocollagenesis ability of synthesized triblock copolymer and confirmed the possibility as the collagen stimulator.
평균분자량 4000 g/mole 폴리에틸렌글리콜(PEG)와 폴리카프로락톤(PCL)으로 구성된 PCL-PEG-PCL 삼중 블록 공중합체를 주석산화합물의 존재 하에서 개환중합을 통해 합성하였다. 20 wt% 수용액 상태의 PCL-PEG-PCL 삼중 블록 공중합체는 동적광산란으로 분석한 결과, 입자는 약 314 nm임을 확인하였다. 콜라겐 재생성을 확인하기 위하여 20 wt% 공중합체 용액을 Sprague-Dawly(SD) 랫드의 피내에 주입한 결과, 투여 8주차에 콜라겐 섬유 밀도가 인산완충 생리식염수 투여군보다 12% 더 높았으며 투여 1주 후에는 잔존 물질이 확인되었으나 투여 2주 이후에는 잔존 물질이 관찰되지 않았다. 본 연구에서는 삼중블록 공중합체를 합성하여 피내에 투여하여 생분해와 콜라겐 재생성을 평가하였고, 콜라겐 생성 촉진제로의 가능성을 확인하였다.
Keywords: copolymer, dermal filler, pegylation, polycaprolactone, poly(ethylene glycol).
2025; 49(2): 159-162
Published online Mar 25, 2025
*R&D Ceneter, ROSELAB Inc, 209 Bongeunsa-ro, Gangnam-gu, Seoul 06109, Korea
**Department of Biological Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea