科普專欄–薯不揀單 - 三十秒科學–RNA亦可以表達在細胞表面上

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?568Please respect copyright.ＰＥＮＡＮＡBgCKglX5NZ
568Please respect copyright.ＰＥＮＡＮＡb35MVK4MHY
568Please respect copyright.ＰＥＮＡＮＡ6Rd9DpO95l
568Please respect copyright.ＰＥＮＡＮＡ0Cmn5d58Nw
(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。568Please respect copyright.ＰＥＮＡＮＡekXggq15dz
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。568Please respect copyright.ＰＥＮＡＮＡg808EouGm4
568Please respect copyright.ＰＥＮＡＮＡtU11dvKQUI
568Please respect copyright.ＰＥＮＡＮＡURJu4onGdE
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。568Please respect copyright.ＰＥＮＡＮＡvqgvgr8vSz
568Please respect copyright.ＰＥＮＡＮＡC8vH05zoLD
(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。568Please respect copyright.ＰＥＮＡＮＡ2laeZIB1UV
568Please respect copyright.ＰＥＮＡＮＡHHHBB0Jyth
568Please respect copyright.ＰＥＮＡＮＡDXfyNaZJ2R
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。568Please respect copyright.ＰＥＮＡＮＡlTVjiPySmp
568Please respect copyright.ＰＥＮＡＮＡU0Eug3cdv3
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。568Please respect copyright.ＰＥＮＡＮＡDI990bez9p
568Please respect copyright.ＰＥＮＡＮＡQh03RwRVHF
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。568Please respect copyright.ＰＥＮＡＮＡHqjoQov0Pq
568Please respect copyright.ＰＥＮＡＮＡs2Ngh9Zm3B
568Please respect copyright.ＰＥＮＡＮＡkIQVjIc9FA
568Please respect copyright.ＰＥＮＡＮＡfoDqBLxd8Y
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。568Please respect copyright.ＰＥＮＡＮＡ6A6JmkVidz
568Please respect copyright.ＰＥＮＡＮＡ9RBZoYNplg
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/toc568Please respect copyright.ＰＥＮＡＮＡ2tt8H26Ugx
568Please respect copyright.ＰＥＮＡＮＡgct2dDR3cc
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。568Please respect copyright.ＰＥＮＡＮＡE8GsO53Cro
568Please respect copyright.ＰＥＮＡＮＡHGkn7iJQbs
Link:568Please respect copyright.ＰＥＮＡＮＡpQ8XlHnkL8
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio568Please respect copyright.ＰＥＮＡＮＡHfvZxQox0h
568Please respect copyright.ＰＥＮＡＮＡMSxA2hWyjf
568Please respect copyright.ＰＥＮＡＮＡsyzE7G48vW
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。568Please respect copyright.ＰＥＮＡＮＡdxEA51tw6S
568Please respect copyright.ＰＥＮＡＮＡAMNZSl7d80
Ref1:https://www.cell.com/cell/fulltext/S0092-8674(21)00503-1

ns3.145.105.194da2

介面主題:

字體大小:

行距:

段距:

自動加載下一章