The effect of EGF, T3 and HB-EGF on human periodontal fibroblasts

作者
Eunkyoung Hong,Jeong‐Heon Cha,Yun Tae Kim,Byung-Jai Choi,Seong‐Oh Kim
出处
期刊:THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY [Korean Academy of Pediatric Dentistry]
卷期号:34 (3): 438-446
摘要

치주인대섬유모세포들은 완전탈구 된 치아의 성공적인 재식을 위한 중요한 요소이다. 따라서, 외상으로 인해 완전탈구된 치아의 보존을 위한 보관액을 선택하는 것이 중요하다. 성장인자들과 호르몬들은 치주인대섬유모세포들의 생존을 위한 치료적 제제로 고려되고 있다. Epidermal growth factor(EGF)는 다른 조직에서 재생과 상처 치유 과정의 중요한 역할인자로 대두되고 있다. 따라서, 완전탈구 된 치아를 위한 치료적 적용을 위해 EGF의 세포 증식에 미치는 영향을 평가하였다. 또한 EGF와 tri-iodothyronine(T3)의 혼합액, EGF와 Heparin-binding epidermal growth factor-like growth factor(HB-EGF)의 혼합액이 세포 증식에 미치는 상승 효과를 평가하였다. 치주인대섬유모세포의 세포증식은 EGF 농도가 증가함에 따라 증가하였고, 10 ng/ml 농도에서 최대 세포증식을 보였다. EGF는 상처치유분석에서 상처 치유촉진과 이동성을 보여주었다. EGF에 T3와 HB-EGF를 첨가한 혼합액에서 배양한 세포는 EGF만 처리한 경우보다 세포 증식이 상승되었다. EGF와 T3 혼합액의 상승효과 기전을 유추하기 위해서 RT-PCR로 EGF 수용기의 발현을 확인하였고, T3가 EGF 수용기 발현을 증가시켰음을 확인하였다. 따라서 EGF와, EGF와 T3, EGF와 HB-EGF의 혼합액은 완전탈구된 치아의 치료에 있어 유용한 선택이 될 것이다. 【Viable cells of periodontal ligament would be an important factor for the successful replantation of an avulsed tooth. Therefore, it is critical to choose the storage medium for the preservation of traumatically avulsed teeth. Growth factors and hormones could be considered for the therapeutic application of the maintenance of viable periodontal ligament fibroblasts (PDLFs). Epidermal growth factor (EGF) has been suggested as an important player for the regeneration and wound healing process on other tissues. Therefore, EGF was evaluated for the therapeutic application on avulsed teeth. In addition, the synergic effect of EGF with tri-iodothyronine (T3) and heparin-binding epidermal growth factor-like growth factor (HB-EGF). The cell proliferation of PDLFs was determined by MTT assay and increased dose-dependently up to 10 ng/ml in the presence of EGF. Maximum cellular growth was shown at the concentration of 10 ng/ml EGF. Also, EGF promoted the wound healing of PDLFs examined by in vitro wound healing assay. Combined effects of EGF with T3 or HB-EGF on the proliferation of PDLFs were also studied. Interestingly, EGF showed the synergic effect on the proliferation of PDLFs with T3 and HB-EGF. To find out the mechanism of the synergic effect of EGF and T3, the effect of T3 on the expression of endogenous EGF receptor was determined by RT-PCR. The result was that T3 enhanced the expression of EGF receptor in PDLFs. It suggested that EGF might be a good choice for a therapeutic application, which can be used as combination with T3 and HB-EGF.】

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