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。1002Please respect copyright.PENANARTcMK3o4ZO
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。1002Please respect copyright.PENANAJn6guc12Pe
1002Please respect copyright.PENANAXQ8ed65Mph
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?1002Please respect copyright.PENANAMc0O4L5saJ
1002Please respect copyright.PENANAP6M1ZarRZJ
1002Please respect copyright.PENANAwRBgxWukzw
1002Please respect copyright.PENANAf9lY40P4xf
(圖2)答案很簡單,就是把那些細胞器官通通摧毀。1002Please respect copyright.PENANAelKSTbDqdl
1002Please respect copyright.PENANAXbWmT65O9C
1002Please respect copyright.PENANAtsXMYhmEml
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。1002Please respect copyright.PENANAFDdEdW4kSf
1002Please respect copyright.PENANA3EupMrUYev
1002Please respect copyright.PENANAmOSI5l4E6O
(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。1002Please respect copyright.PENANAaKFYqLkIiw
1002Please respect copyright.PENANAjV1SwoQkdH
1002Please respect copyright.PENANAM2Pss4iSWs
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。1002Please respect copyright.PENANAZZjp8RvPCb
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。1002Please respect copyright.PENANA7dB0oC4egg
1002Please respect copyright.PENANAabKFlT9Lqo
1002Please respect copyright.PENANAjqq4rE3OEc
(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,1002Please respect copyright.PENANAcSEn3Pnu1i
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。1002Please respect copyright.PENANApfhKhLjk8Y
1002Please respect copyright.PENANA0wa5wtuiIR
1002Please respect copyright.PENANAKnQQEOCOss
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。1002Please respect copyright.PENANAmUzH7dZgFm
1002Please respect copyright.PENANA6PvJXHLpDh
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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。1002Please respect copyright.PENANApniveITT7a
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1002Please respect copyright.PENANAc2xIiAJBTZ
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。1002Please respect copyright.PENANAgfrlEYwYzg
1002Please respect copyright.PENANAR36co6g1nT
1002Please respect copyright.PENANArJrOovuRV7
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1002Please respect copyright.PENANAtiEKLNhdTt
1002Please respect copyright.PENANA2IciaFA5dR
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。1002Please respect copyright.PENANA1KpS8Vj34L
1002Please respect copyright.PENANA6Wup6i9PoE
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/toc1002Please respect copyright.PENANASHZv1zNi4J
1002Please respect copyright.PENANAcqFxkvDrfi
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。1002Please respect copyright.PENANAjJQ835uFMj
1002Please respect copyright.PENANAhf6QqlhKVk
Link:1002Please respect copyright.PENANA4ZWX3m6LA2
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio1002Please respect copyright.PENANAEyNXoc0Nzc
1002Please respect copyright.PENANAIgwZtm4JLc
1002Please respect copyright.PENANAyQmudvWHm2
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。1002Please respect copyright.PENANAJT1NL2kbIO
1002Please respect copyright.PENANAi1EXNQ0mgM
Ref1:https://www.nature.com/articles/s41586-021-03439-w1002Please respect copyright.PENANAFaTrpwmRRy
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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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