科普專欄–薯不揀單 - 三十秒科學–粒線體分裂

粒線體在大部份的教科書裡均會被描繪成為橢圓形狀，然而這與事實是完全的背道而馳。522Please respect copyright.ＰＥＮＡＮＡhMFkNf3Wfn
粒線體在細胞內並無固定形態，且經常會改變自身的形狀。522Please respect copyright.ＰＥＮＡＮＡ5fkzL7iHYM
522Please respect copyright.ＰＥＮＡＮＡpDaSuRDTMH
522Please respect copyright.ＰＥＮＡＮＡmDV2RRWwaO
522Please respect copyright.ＰＥＮＡＮＡ0MKyu4Xtas
(圖2)圖中的鬼劃符並非是茶餐廳侍應生字體、亦不是醫生字體，而是粒線體的各種倩影。522Please respect copyright.ＰＥＮＡＮＡLEAm1eAJOQ
522Please respect copyright.ＰＥＮＡＮＡOiKSATw2x6
522Please respect copyright.ＰＥＮＡＮＡlz3kZsUOMf
由此可見得到粒線體的形象百變，絕非是普通的一個橢圓形這麼簡單。522Please respect copyright.ＰＥＮＡＮＡLqz67BLRsU
522Please respect copyright.ＰＥＮＡＮＡc6fBI6r2QO
另一點值得注意的是圖中的藍色三角型，它標示著粒線體即將一分為二的位置;522Please respect copyright.ＰＥＮＡＮＡMIlPRp5ggk
有一些處於中間位置，而有一些則位於界乎邊緣的位置。522Please respect copyright.ＰＥＮＡＮＡWPvYhZ2igN
522Please respect copyright.ＰＥＮＡＮＡpgFCd9Bnrp
522Please respect copyright.ＰＥＮＡＮＡYnCXSPwXwg
(圖3)橙色框架為粒線體在邊緣位置一分為二，而綠色框架為粒線體在中間位置一分為二。522Please respect copyright.ＰＥＮＡＮＡ65IXaUz3s2
522Please respect copyright.ＰＥＮＡＮＡolvFUPGgrx
522Please respect copyright.ＰＥＮＡＮＡabyDClZLYd
兩者的分別究竟是隨機所致，還是別有用心做成的呢?522Please respect copyright.ＰＥＮＡＮＡfanbS0M3pQ
522Please respect copyright.ＰＥＮＡＮＡz5kaIyGnGu
(圖4)經過一系列的研究發現，往中間分裂的粒線體為正常運作的粒線體，以一變二從而更有效率為細胞提供能源。522Please respect copyright.ＰＥＮＡＮＡ8P6AxunsBo
522Please respect copyright.ＰＥＮＡＮＡlbjF0RgtGn
522Please respect copyright.ＰＥＮＡＮＡ9r5BAbEB9n
而朝邊緣分裂的粒線體大多是有問題的粒線體，這樣做的目的是提供訊號號令細胞殲滅自己，分解過程涉及名為lysosome的細胞器官，且被稱之為Mitophagy。522Please respect copyright.ＰＥＮＡＮＡlyP5svfs0j
522Please respect copyright.ＰＥＮＡＮＡXFyQuzBui1
有不少證據顯示，若過量的粒線體分裂過程處理失當的話，便會引致神經衰退、心臟問題甚至是癌症等疾病，所以絕對不能看少。522Please respect copyright.ＰＥＮＡＮＡK4B0iAzRAr
522Please respect copyright.ＰＥＮＡＮＡ8CsxEdeHrj
522Please respect copyright.ＰＥＮＡＮＡRNuum60Ttg
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。522Please respect copyright.ＰＥＮＡＮＡm39wKQkBNY
522Please respect copyright.ＰＥＮＡＮＡvf4t5anFkf
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/toc522Please respect copyright.ＰＥＮＡＮＡoUCNjHGMmv
522Please respect copyright.ＰＥＮＡＮＡiG6Io6YQLl
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。522Please respect copyright.ＰＥＮＡＮＡ9NCY6DzZ2A
522Please respect copyright.ＰＥＮＡＮＡjadWYi1NBf
Link:522Please respect copyright.ＰＥＮＡＮＡ6u6eSDMD8i
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio522Please respect copyright.ＰＥＮＡＮＡzBFzZcJMub
522Please respect copyright.ＰＥＮＡＮＡeXOnvz4hJQ
522Please respect copyright.ＰＥＮＡＮＡdy8t80VyRL
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。522Please respect copyright.ＰＥＮＡＮＡQORbmcncFB
522Please respect copyright.ＰＥＮＡＮＡopbmrqBKM0
Ref1:https://www.nature.com/articles/s41586-021-03510-6.epdf?sharing_token=mzsmDs0ANdRBBQvInQMvvtRgN0jAjWel9jnR3ZoTv0OMD04Ej-fby18QAbbYG6vyeMOYV7CCtU3H37dLLVGMhZrbaWwtYnIpOFGd_LqSK3hdGqNlM7t6Rx3bnspU9DQ9gY6z-suKVBlosRUCiyfKgCZhfjCY5-MquoelNTFJO3k%3D