日本京都大學的研究人員利用源自老鼠皮膚的誘導多能干細胞(iPS細胞)培育出聽神經(jīng)祖細胞,,專家認為這將有助于治療因聽神經(jīng)數(shù)量減少導致聽力障礙的患者,。
京都大學的兩位教授——伊藤壽一和山中伸彌率領(lǐng)一個研究小組對利用老鼠皮膚細胞制造的iPS細胞進行培養(yǎng),,得到了聽神經(jīng)祖細胞,。此后,,他們將聽神經(jīng)祖細胞移植入一只新生幼鼠的內(nèi)耳耳蝸。
一個月以后,,移植的多數(shù)細胞不斷發(fā)育成熟,進而構(gòu)成了螺旋神經(jīng)節(jié),。而螺旋神經(jīng)節(jié)——這種聽神經(jīng)的減少或消失會導致聽力障礙,。
這個研究小組此前曾利用胚胎干細胞成功培育出聽神經(jīng)祖細胞,,并將其移植給聽神經(jīng)受損的老鼠,改善了老鼠的部分聽力,。iPS細胞可利用患者本人的體細胞來培養(yǎng),,能避免排異反應和倫理問題。因此日本專家認為,,上述成果有助于治療因聽神經(jīng)數(shù)量減少導致聽力障礙的患者。
此次實驗還表明,,來源不同的iPS細胞有的會發(fā)育成腫瘤細胞,,因此上述研究小組將今后的重要課題確定為選出合適的iPS細胞,并將其準確地培養(yǎng)成神經(jīng)祖細胞,。(生物谷Bioon.com)
2010年干細胞技術(shù)與應用講習班
舉辦城市: 上海
舉辦地點: 上海好望角大飯店
舉辦時間: 2010-4-15 ~ 2010-4-16
主辦單位: 中國科學院干細胞庫 北方干細胞庫 南方干細胞庫 華東干細胞庫
承辦單位: 生物谷|BioonGroup
電話: 021-54485309
傳真: 021-54485087
Email: [email protected]
會議官方網(wǎng)站:http://www.stemcellasia.net/
生物谷推薦原始出處:
NeuroReport 23 September 2009 doi: 10.1097/WNR.0b013e32832ff287
Transplantation of mouse induced pluripotent stem cells into the cochlea
Nishimura, Koji; Nakagawa, Takayuki; Ono, Kazuya; Ogita, Hideaki; Sakamoto, Tatsunori; Yamamoto, Norio; Okita, Keisuke; Yamanaka, Shinya; Ito, Juichi
This study examined the potential of induced pluripotent stem (iPS) cells for use as a source of transplants for the restoration of auditory spiral ganglion neurons. We monitored neurite outgrowth from iPS cell-derived neural progenitors toward cochlear hair cells ex vivo, and followed their survival and fates after transplantation into mouse cochleae in vivo. Neurons derived from iPS cells projected neurites toward cochlear hair cells. The settlement of iPS cell-derived neurons was observed 1 week after transplantation into the cochlea. Some transplants expressed vesicular glutamate transporter 1, which is a marker for glutamatergic neurons. These findings indicate that iPS cells can be used as a source of transplants for the regeneration of spiral ganglion neurons.