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。625Please respect copyright.PENANAHc1ktNhgYr
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。625Please respect copyright.PENANAfqm1lQpJwB
625Please respect copyright.PENANAX5lWi8Y8pM
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?625Please respect copyright.PENANAzfiaoHX5YK
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(圖2)答案很簡單,就是把那些細胞器官通通摧毀。625Please respect copyright.PENANAmzsceJNmdd
625Please respect copyright.PENANANSOGD8O7ny
625Please respect copyright.PENANAsFfxjJSWZ4
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。625Please respect copyright.PENANAtDToz8QQTp
625Please respect copyright.PENANAtTAlQUfCTr
625Please respect copyright.PENANADmp0Ve6Vht
(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。625Please respect copyright.PENANAhOs8MAUkft
625Please respect copyright.PENANAFq8DRoGa6m
625Please respect copyright.PENANAZG3NENKz0o
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。625Please respect copyright.PENANACLlFbutrme
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。625Please respect copyright.PENANAsRvqGAMtH1
625Please respect copyright.PENANAwvh3dhgwH7
625Please respect copyright.PENANASx6pVEaN2d
(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,625Please respect copyright.PENANAEjCM6tzGfE
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。625Please respect copyright.PENANAXC39Tqkafh
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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。625Please respect copyright.PENANAeRzTlAFe5W
625Please respect copyright.PENANAg2VhbT0jPs
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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。625Please respect copyright.PENANA3jgCiGkb1B
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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。625Please respect copyright.PENANAPCWWPE3eWY
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625Please respect copyright.PENANA2LAM2KSGzJ
625Please respect copyright.PENANAT8pZbuwnHN
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。625Please respect copyright.PENANAXefyhJLibp
625Please respect copyright.PENANAevKNVVkiVa
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/toc625Please respect copyright.PENANAaXvl6XnadS
625Please respect copyright.PENANAg9MPjIof55
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。625Please respect copyright.PENANAy41ld0E1tX
625Please respect copyright.PENANAVJLAD3gRtX
Link:625Please respect copyright.PENANAXBKzKDsBnz
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio625Please respect copyright.PENANAaiXkbeymXm
625Please respect copyright.PENANAsP0wIvs7SH
625Please respect copyright.PENANAx1xn67Kuxd
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。625Please respect copyright.PENANA0YM6lQz3cC
625Please respect copyright.PENANAxcBK1VCTnR
Ref1:https://www.nature.com/articles/s41586-021-03439-w625Please respect copyright.PENANAaSxo8YD9CF
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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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