癌細胞從原處走到另一地方(轉移,Metastasis),均需透過血液或淋巴系統作交通渠道。541Please respect copyright.PENANAcsRCJQrw54541Please respect copyright.PENANAjSVTsZtF4t
541Please respect copyright.PENANAFKbR8o7GZ6
有不少癌細胞轉移到另一器官後會呈「休養」狀態,不迅速繁殖,而是長期潛伏在另一器官內。541Please respect copyright.PENANAwC2YH8zqqW
541Please respect copyright.PENANACAJXzo6p1Y
因此就算沒能檢測得到循環腫瘤細胞的存在,也不百分百等於未來不會出現癌細胞轉移事件。541Please respect copyright.PENANAd9PmvlHS5S
541Please respect copyright.PENANAUZCKUF4uIs
541Please respect copyright.PENANA7Xm0q3GSMA
(圖2)科學家分別把人類及老鼠的癌細胞注入到老鼠模型作研究,發現癌細胞發生轉移的機率是與目的地所含的NK cell數量有關係。541Please respect copyright.PENANArqdahsrV1y541Please respect copyright.PENANA76IDTRYtu4
541Please respect copyright.PENANAWdjP24Jquo
目的地所含的NK cell越多,該地方出現癌細胞轉移的機率亦會越低。541Please respect copyright.PENANAX8MbD5GqgC
541Please respect copyright.PENANA8rtGiHE2rQ
之所以會出現這情況,除了是NK cell殺死癌細胞這可能性之外,科學家發現NK cell會釋放interferon-γ (IFN-γ)的物質,誘使癌細胞進入休養狀態,不進行自我繁殖。541Please respect copyright.PENANAu1Dt3644TV
541Please respect copyright.PENANAZ78ImYe7Tk
541Please respect copyright.PENANA3lhsLCPkhl
(圖3)奈何,至少在肝臟裡頭,一種名為Hepatic stellate cells會釋出CXCL12物質,CXCL12會阻礙NK cell的生長速度。541Please respect copyright.PENANA54I6ibHls5541Please respect copyright.PENANAXrRXFYEXzr
541Please respect copyright.PENANAo30YAb7vD1
541Please respect copyright.PENANATWS9FIwKFn
久而久之,便再也沒有足夠的NK cell抑制癌細胞的生長,而當潛伏在另一器官的癌細胞快速繁殖之時,這亦是轉移(Metastasis)被鑑定發生之時。541Please respect copyright.PENANAvt88AcXGCT
541Please respect copyright.PENANAxyAjnsyQ8C
541Please respect copyright.PENANAsr7Z9GbfoT
對此,研發藥物或療程確保NK cell長期處於足夠水平,或許是一道避免癌細胞發生轉移的大方向。541Please respect copyright.PENANAskf6GYP5OA
541Please respect copyright.PENANAAuJIkLRGar
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。541Please respect copyright.PENANAjNwENqxeWp
541Please respect copyright.PENANAs26pM3Pq83
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/toc541Please respect copyright.PENANAE4jQqvIMnu
541Please respect copyright.PENANAydhkuQNKsX
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。541Please respect copyright.PENANAqqfWqAAzvJ
541Please respect copyright.PENANAu9D67naFwr
Link:541Please respect copyright.PENANAMzwdJ2DbW7
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio541Please respect copyright.PENANAwBXsjUd6yK
541Please respect copyright.PENANAZu4DUYAj1B
541Please respect copyright.PENANAU9TaC4luks
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。541Please respect copyright.PENANA9eLWJvKG92
541Please respect copyright.PENANAh8KeaPq88M
Ref1:https://www.nature.com/articles/s41586-021-03614-z541Please respect copyright.PENANAflMpV2VxUD