上集:三十秒科學–Natural Killer Cell572Please respect copyright.PENANAH50eeuQgkQ
- 分享自 LIHKG 討論區572Please respect copyright.PENANARzSOJYdJO7
https://lih.kg/2548724572Please respect copyright.PENANAtvlNmGRjbK
572Please respect copyright.PENANAEYYK261ymn
上集提及過NK cell有著殺滅癌細胞的本領,如圖中所見,紅色的NK cell遇上綠色的癌細胞後,在1小時打後可以見得到癌細胞開始變形,更在74分鐘打後「灰飛煙滅」。572Please respect copyright.PENANAw8LBYaIJpJ572Please respect copyright.PENANAEHc92sKJDh
既然這麼順利,那為何還會有癌症出現呢?572Please respect copyright.PENANA5ZtLoFfmTD
572Please respect copyright.PENANAGuo4HAkClc
(圖2)這是因為癌細胞有著各樣的手段對抗NK cell的襲擊,明哲保身。572Please respect copyright.PENANAu67anUt3DX572Please respect copyright.PENANA1xSn4uhOut
572Please respect copyright.PENANAIrEuro9dNw
從圖中的例子可以看到,這一次NK cell與癌細胞接觸約36分鐘後,不但沒有襲擊癌細胞,更以那兩名香港警察先鋒對待721的方式逃逸離去,使癌細胞得以安然無恙活下去。572Please respect copyright.PENANAlUscLSxln5
572Please respect copyright.PENANAsyJDdaLypI
(圖3)科學家發現,較能對抗NK cell的癌細胞有著一道應付NK cell的本領,它們遇上NK cell後會快速改變自身的蛋白質結構,將歸納名為actin的蛋白質速速調配至與NK cell的接觸點,形成圖中綠色區域的聚集。572Please respect copyright.PENANAfMgLdfvuJy572Please respect copyright.PENANAxIaGjx0j2B
572Please respect copyright.PENANAqcCUSpdGMG
這些actin蛋白質的調動,促使抑制NK cell的蛋白質大量且集中聚積到與NK cell的接觸點(上集所指的 – 號組合),導致NK cell失去殺滅癌細胞的功能,並且與癌細胞作出脫離。572Please respect copyright.PENANAS4oi5VmB69
572Please respect copyright.PENANAoDxDSMLWR0
而沒能對抗NK cell的癌細胞並沒有出現actin蛋白質的調整,相對上因而較易遭受到NK cell的侵襲。572Please respect copyright.PENANAgM0ggSAQ0u
572Please respect copyright.PENANANtY1HddXNO
572Please respect copyright.PENANAyg4XiCU2pt
572Please respect copyright.PENANATO2Pnwof0U
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。572Please respect copyright.PENANAzXwrLZcYMi
572Please respect copyright.PENANAwIf1z9JGjr
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/toc572Please respect copyright.PENANAZdUTlQilqV
572Please respect copyright.PENANAkPzu40jkwr
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。572Please respect copyright.PENANAT4780X9PX4
572Please respect copyright.PENANA8wfelJvLEc
Link:572Please respect copyright.PENANAH8Dn1CKOP4
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio572Please respect copyright.PENANALHCgLli1HM
572Please respect copyright.PENANAfeWYA21yMt
572Please respect copyright.PENANArwZpUn1Fse
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。572Please respect copyright.PENANARcGfgVTcXg
572Please respect copyright.PENANAuz62NI8FBb
Ref1:https://cancerres.aacrjournals.org/content/78/19/5631572Please respect copyright.PENANAlid01qDV44
arrow_back
科普專欄–薯不揀單
more_vert
-
info_outline 資料
-
toc 目錄
-
share 分享
-
format_color_text 介面設置
-
exposure_plus_1 推薦
-
打賞
-
report_problem 檢舉
-
account_circle 登入
X
科普專欄–薯不揀單
作者:
薯仔聞茱莉

篇 #238
三十秒科學–癌細胞逃避NK cell侵襲的一道手段
喜歡 1
閱讀 568
書籤 150
campaign
催更 0
打賞

按此加載下一章
X
每次催更後,作者都會收到通知!
smartphone100 → 催更
×
寫下你喜歡這個故事的地方
×
對此喜歡的人