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  5. 探討類胰島素生長因子-1受體之訊息傳遞於無血清培養之 牙髓幹細胞特性影響
 
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探討類胰島素生長因子-1受體之訊息傳遞於無血清培養之 牙髓幹細胞特性影響

Other Title
Role of IGF-1R Signaling in Stemness Maintenance of
Dental Pulp Stem Cell in a Serum-free Culture System
Type
thesis
Date Issued
2013-01-23
Author(s)
王慧茹
Advisor
李勝揚
Subjects
系所名稱:牙醫學系碩博士班
Description
學位別:碩士
語文別:中文
指導教授:李勝揚
共同指導教授:黃彥華
口試委員:林泰元;黃惠美;鄭景暉
中文關鍵字:人類牙髓幹細胞、類胰島素生長因子-1、無血清
Abstract
人類牙髓幹細胞為多功能間葉前驅細胞,具有高度的增生及自我更新能力。在無血清培養基下培養和增殖前驅細胞,將有利於將來移植和臨床細胞治療運用。然而,在含血清之培養基培養下通常會減少人類牙髓幹細胞之幹細胞能力,而妨礙細胞在轉譯醫學上的運用。本研究計畫主要為探討,在無血清培養基加上類胰島素生長因子-1 (Insulin-like growth factor-1, IGF-1),測試人類牙髓幹細胞之增生以及維持幹細胞特性之能力。在我們研究中,牙髓幹細胞從成人齒顎矯正患者取得,並用CD73+ 磁性細胞分選技術 (Magnetic activated cell sorting system, MACS) 來篩選更純化的牙髓幹細胞 。將分離出具CD73+ 牙髓幹細胞同時培養在控制組 (MCDB201),或添加IGF-1、PPP (IGF-1R磷酸化的抑制劑)、LY294002 (PI3-K 的抑制劑),和 PD98059 (MAPK 抑制劑)。 與控制組比較,藉由Hemocytometer counter測定,發現IGF-1訊息傳遞增加細胞增生能力以及促進表現幹細胞特定標誌的表現,例如CD73和CD166,以及增加細胞脂化和細胞骨化之分化能力。此外,PPP 和 LY294002明顯地抑制牙髓幹細胞內IGF-1訊息傳遞路徑,而PD98059沒有影響。實驗結果發現,IGF-1/ IGF-1受體之訊息傳遞在人類牙髓幹細胞之增生能力和維持幹細胞特性之能力扮演重要角色。
URI
https://203.71.86.71/handle/123456789/13758

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