我們身體的各部份均是由細胞組成,眼睛晶片也自當然不例外。594Please respect copyright.PENANAEHHWAc8BfE
但細胞裡頭有著各式各樣的細胞器官,例如負責製造能源的粒線體(mitochondria)、收藏DNA的細胞核(nucleus)等,它們顯然並不是透明的。594Please respect copyright.PENANAbGEwG9THl7
594Please respect copyright.PENANAmVsX3ValoN
究竟身體有甚麼方法可以製造透明且能讓光線通過的眼鏡晶片呢?594Please respect copyright.PENANAm4qjkSNwlh
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594Please respect copyright.PENANAt1suNXpN84
(圖2)答案很簡單,就是把那些細胞器官通通摧毀。594Please respect copyright.PENANAwdL7lzGhSE
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594Please respect copyright.PENANAA6K3RQmztY
從圖中可見,晶片的外圍有著表皮細胞(Epithelial cells)以及纖維細胞(Fibre cells),唯獨是中間區域的細胞,它們的細胞器官均接近得消失得一乾二淨。594Please respect copyright.PENANAkjEutxo3do
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594Please respect copyright.PENANAq6aCbYbZ9i
(圖3)有科學家利用班馬魚作動物模型,並將兩款細胞器官分別染成綠色及紅色。594Please respect copyright.PENANAEe8PdXSxMc
594Please respect copyright.PENANADrDNiRrPgj
594Please respect copyright.PENANAUcHyFinWt1
從圖中可見,直至班馬魚受精後約59小時左右,綠色及紅色均分別清晰可見及有著其獨特的分佈,表示兩款細胞器官非常健在。594Please respect copyright.PENANAWXms6HqpdP
但在約60小時打後,紅色和綠色開始有著衰退的現象,亦即表示細胞器官開始逐漸被受摧毀。594Please respect copyright.PENANA1VmLJXMgpa
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(圖4)找出眼睛晶片的細胞器官被受摧毀的時段後,研究人員便著手進行一系列的實驗,594Please respect copyright.PENANANjnV6dxTie
並發現名為plaat的蛋白質負責在細胞器官的外膜進行破壞,因而引發細胞器官摧毀的過程。594Please respect copyright.PENANA8eFoicW9dX
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圖中為班馬魚的眼睛晶片,可見因為缺乏plaat蛋白質的緣故,細胞器官沒能完整摧毀,其晶片亦變得相對上混濁及不透光,影像亦較為不清晰。594Please respect copyright.PENANAeV2Wnpyfve
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(圖5)除班馬魚外,研究人員亦有利用老鼠進行實驗。594Please respect copyright.PENANAnRyPnQZdoU
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跟班馬魚一樣,缺乏plaat蛋白質的老鼠眼睛晶片變得混濁及不透光,並影響視線。594Please respect copyright.PENANAttU1XefJaQ
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594Please respect copyright.PENANAcPRSg0KsGq
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。594Please respect copyright.PENANAkZH1Ns1WE4
594Please respect copyright.PENANA3Yyh0zHnoG
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc594Please respect copyright.PENANA9d7VowXsht
594Please respect copyright.PENANA7yH4iR354E
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。594Please respect copyright.PENANAQh4PgGIg6M
594Please respect copyright.PENANArvM613v2mT
Link:594Please respect copyright.PENANAE4qfJ0vPDB
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio594Please respect copyright.PENANAV7k9ABkZIQ
594Please respect copyright.PENANAFaVa9NykkI
594Please respect copyright.PENANA0i2b9YLrYn
除非Facebook及IG重開侵侵的account,否則我的IG將不會再作更新,只會寄居本土LIHKG及Penana。594Please respect copyright.PENANAeZ5zOiPL75
594Please respect copyright.PENANAO9rHBrWfFZ
Ref1:https://www.nature.com/articles/s41586-021-03439-w594Please respect copyright.PENANAxvOVZkCRum
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科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #205
三十秒科學–雪亮的眼睛
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