科普專欄–薯不揀單 - 三十秒科學–雪亮的眼睛

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。835Please respect copyright.ＰＥＮＡＮＡSr9IbcSo1A
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。835Please respect copyright.ＰＥＮＡＮＡNuvCNOeh4i
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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?835Please respect copyright.ＰＥＮＡＮＡIWwz1MGYg8
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(圖2)答案很簡單，就是把那些細胞器官通通摧毀。835Please respect copyright.ＰＥＮＡＮＡ1C5Rnz07al
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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。835Please respect copyright.ＰＥＮＡＮＡjDNp2C3J8o
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(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。835Please respect copyright.ＰＥＮＡＮＡjRwlkEBNJr
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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。835Please respect copyright.ＰＥＮＡＮＡRNf7ZegPpX
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。835Please respect copyright.ＰＥＮＡＮＡR9R1tfZ3bG
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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，835Please respect copyright.ＰＥＮＡＮＡDNbxmRD87p
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。835Please respect copyright.ＰＥＮＡＮＡ4xiZcIS0lP
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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。835Please respect copyright.ＰＥＮＡＮＡTRFAwQLBgv
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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。835Please respect copyright.ＰＥＮＡＮＡfytW68ybfy
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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。835Please respect copyright.ＰＥＮＡＮＡPnkRhegbiH
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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。835Please respect copyright.ＰＥＮＡＮＡUb5NmxDkCq
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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/toc835Please respect copyright.ＰＥＮＡＮＡFIAxxPaQWv
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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。835Please respect copyright.ＰＥＮＡＮＡ0OSNPk34AO
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Link:835Please respect copyright.ＰＥＮＡＮＡcFenbQ0C1p
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio835Please respect copyright.ＰＥＮＡＮＡLjmiYKdCqD
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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。835Please respect copyright.ＰＥＮＡＮＡeRzs0UHZ6I
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Ref1:https://www.nature.com/articles/s41586-021-03439-w835Please respect copyright.ＰＥＮＡＮＡhCextgw6P0

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