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。595Please respect copyright.PENANAzUah8oj9HK
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。595Please respect copyright.PENANA8CZMxD8h5b
595Please respect copyright.PENANAH2Uut7NiKx
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?595Please respect copyright.PENANAzTDE0pCH1A
595Please respect copyright.PENANA00HKzBGh2c
595Please respect copyright.PENANAlRjFFo53Up
595Please respect copyright.PENANAFqIsTZkw3q
(圖2)答案很簡單,就是把那些細胞器官通通摧毀。595Please respect copyright.PENANAaaxjZfI4XA
595Please respect copyright.PENANA5j9eDnbw1M
595Please respect copyright.PENANA5AUN85yPVZ
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。595Please respect copyright.PENANApBPqF5ai7m
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595Please respect copyright.PENANAxxXHxsXeke
(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。595Please respect copyright.PENANAUUObR2V81e
595Please respect copyright.PENANAxrVG61YYvA
595Please respect copyright.PENANAt1xTkxHLZC
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。595Please respect copyright.PENANAGkrM4myCXo
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。595Please respect copyright.PENANAnq8KqRFQmV
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595Please respect copyright.PENANA4RD5dWYQon
(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,595Please respect copyright.PENANAdLEUnOnLX3
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。595Please respect copyright.PENANAleaLvaDzAn
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595Please respect copyright.PENANAfxLuJu0gmY
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。595Please respect copyright.PENANANZjbnClL7u
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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。595Please respect copyright.PENANAurz3purKKQ
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595Please respect copyright.PENANAFglIMyvrJC
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。595Please respect copyright.PENANABZRRg68gdV
595Please respect copyright.PENANAXItq8MCHpi
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595Please respect copyright.PENANAIFkp7NAQdF
595Please respect copyright.PENANAELjiTiW5Dn
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。595Please respect copyright.PENANA2lCjpuHcxx
595Please respect copyright.PENANADdKMQvs4Xk
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/toc595Please respect copyright.PENANADCq4vE4Wor
595Please respect copyright.PENANA1ODgW9JQBa
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。595Please respect copyright.PENANA37n9yFZxz4
595Please respect copyright.PENANAxpSvssmddp
Link:595Please respect copyright.PENANAcwaYjsAJeq
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio595Please respect copyright.PENANAfaxDvv3LKu
595Please respect copyright.PENANAiZST7mMCIr
595Please respect copyright.PENANAdbIRmgq5zy
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。595Please respect copyright.PENANAQzFqIaA3tq
595Please respect copyright.PENANAmpNOEIjwY2
Ref1:https://www.nature.com/articles/s41586-021-03439-w595Please respect copyright.PENANAqh8I7pXqhL
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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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