2025 bilogy talkshow: 鐮型血球貧血深度探討 episode artwork

EPISODE · Nov 28, 2025 · 12 MIN

2025 bilogy talkshow: 鐮型血球貧血深度探討

from 雷比特生物空中講 · host 雷比特老師

提供對鐮型紅血球貧血症的深度分子、演化與治療分析,追溯該疾病從 1904 年的臨床發現,到萊納斯·鮑林將其定為首個 「分子疾病」 的歷史進程。病理機制源於 HBB 基因的單點突變,將親水性麩胺酸替換為疏水性纈胺酸,導致去氧狀態下的血紅素發生構型改變並形成 「疏水性補丁」,進而引發致命的聚合反應。詳細區分該基因在分子層次的 「等顯性」、細胞層次的半顯性與臨床層次的隱性表現,並強調了 「延遲時間」 這一關鍵的化學動力學概念,解釋攜帶者如何避免血管阻塞。在演化生態學上,該突變的持續存在是 「平衡多型性」 的結果,因為異型合子能有效抵抗 「惡性瘧疾」 的威脅。最後介紹運用 CRISPR 基因編輯 技術的最新療法,透過抑制 BCL11A 基因來重新啟動不會聚合的 「胎兒血紅素」 製造,從而為患者提供治癒的希望。 聽完後可以自主進行線上測驗,檢視學習成效喔~(需要登入gemini) 測驗網址  https://gemini.google.com/share/91b181f6b170 Powered by Firstory Hosting

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2025 bilogy talkshow: 鐮型血球貧血深度探討

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