http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Suk Ho Bhang(방석호) 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
Although light has attracted significant attention as a promising tool in the biomedical and cosmetic industries, little is known about the cytotoxic effects based on light source. Here, the cytotoxic effects of representative light sources, a light-emitting diode (LED) and an organic light-emitting diode (OLED), were studied with human adipose-derived stem cells (hADSCs). The differences in cytotoxicity and cellular response after LED irradiation compared with OLED irradiation can be varied with temperature and luminance control. This study suggests that OLED based device could be an alternative and promising light source for future biomedical and cosmetic applications.
역오팔 구조 지지체를 이용한 인간 지방 유래 줄기 세포의 연골 분화 촉진
방석호 ( Suk Ho Bhang ),유태경 ( Tae Kyung Yu ) 한국화학공학회 2013 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.51 No.6
In this report, we present an inverse opal scaffold that can enhance the chondrogenic differentiation of human adipose-derived stem cells (hADSCs) without drug, gene, or cytokine supplement. Inverse opal scaffolds based on poly(D,L-lactide-co-glycolide) were formed with uniform 200 μm pores. Due to uniform pore sizes and well-controlled interconnectivity of inverse opal scaffold, hADSCs were allowed to distribute homogeneously throughout the scaffolds. As a result, high cell density culture with scaffold was possible. Since the hADSCs cultured in inverse opal scaffolds were subjected to limited supplies of oxygen and nutrients, these cells were naturally preconditioned to a hypoxic environment that stimulated the up-regulation of hypoxia-inducible factor-1α (HIF-1α). As a result, apoptotic activity of hADSCs until 3 weeks after initial cell seeding was significantly reduced and chondrogenic differentiation related molecular signal cascades were up regulated (transforming growth factor-beta, phosphorylated AKT, and phosphorylated p38 expression). In contrast, hADSCs cultured with small and non-uniform porous scaffolds showed significantly increased apoptotic activity with decreased chondrogenic differentiation. Taken together, inverse opal scaffold could potentially be used as an effective tool for improving chondrogenesis using stem cells.
신현호 ( Hyun Ho Shin ),방석호 ( Suk Ho Bhang ) 한국공업화학회 2015 공업화학전망 Vol.18 No.6
피부 결손은 대표적인 피부 질환으로, 인간에게 발생되는 가장 흔한 질병 중의 하나이다. 이를 치료하기 위해 다양한 창상 피복재들이 개발되고 있으나, 다수의 미충족 의료수요가 존재하는 바 치료 효율이 높은 창상 치료용 기술 개발이 요구되는 실정이다. 본 논문에서는 조직공학적 접근을 통해 피부 창상 치료용 기술 개발에 쓰이는 물질들을 소개하고 앞으로의 전망에 대하여 다방면으로 논하고자 하였다.