人們可以透過語言或肢體動作表達自己所想或傳遞訊息，但身體細胞並沒有「嘴巴」，它們又如何互相溝通呢?651Please respect copyright.ＰＥＮＡＮＡoWKqdpiJY7
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(圖2)其中的一道方法，就是透過自身表面所呈現的物質作為橋樑。651Please respect copyright.ＰＥＮＡＮＡy3LiTKjb8A
譬如說，當人體細胞表面的ACE2蛋白質或Neuropilin1蛋白質與武肺病毒表面的S蛋白質結合的話，武肺病毒便會入侵身體細胞裡頭。651Please respect copyright.ＰＥＮＡＮＡAXEsc7Seej
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若細胞沒有ACE2/ Neuropilin1蛋白質的話，除非有額外的輔助，武肺病毒便沒法辨認得到細胞，順之然亦不會入侵對方。651Please respect copyright.ＰＥＮＡＮＡgHviMZKyBr
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(圖3)在大多數的情況下，細胞表面的物質均由蛋白質或脂肪所做成，糖份結構亦會鑲嵌在這些物質上，因而改變這些物質的形狀及用途。651Please respect copyright.ＰＥＮＡＮＡi4XoGAs0lt
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最近科學家們得出驚人的發現，一些不會參與蛋白質生產的RNA(non-coding RNA)亦會表達在細胞表面上，且有著糖份結構與自身連繫。651Please respect copyright.ＰＥＮＡＮＡVsfddAnucE
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這些結構在實驗室細胞及老鼠身上同時能找得到，可以說是大幅度改寫了學術界普遍對RNA功用的看法。651Please respect copyright.ＰＥＮＡＮＡ30YftBheg8
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而這些表達在細胞表面的RNA究竟有甚麼用途，是否參與在免疫作用等用途，則還需日後一系列的研究。651Please respect copyright.ＰＥＮＡＮＡj6nT9DTJjo
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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。651Please respect copyright.ＰＥＮＡＮＡGgYesKDjvv
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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。651Please respect copyright.ＰＥＮＡＮＡb3M15jsJKA
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https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio651Please respect copyright.ＰＥＮＡＮＡnGaJc6E8IY
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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。651Please respect copyright.ＰＥＮＡＮＡ9jC48gfn7m
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Ref1:https://www.cell.com/cell/fulltext/S0092-8674(21)00503-1
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