利用體外器官支持系統讓受損豬肺再生 | 《自然-通訊》 |
論文標題:Regeneration of severely damaged lungs using an interventional cross-circulation platform
期刊:Nature Communications
作者:Brandon A. Guenthart, John D. O』Neill, Jinho Kim, Dawn Queen, Scott Chicotka, Kenmond Fung, Michael Simpson, Rachel Donocoff, Michael Salna, Charles C. Marboe, Katherine Cunningham, Susan P. Halligan, Holly M. Wobma, Ahmed E. Hozain, Alexander Romanov, Gordana Vunjak-Novakovic, Matthew Bacchetta
發表時間:2019/05/07
數字識別碼: 10.1038/s41467-019-09908-1
原文連結:http://t.cn/EoHK9OF
微信連結:https://mp.weixin.qq.com/s/Qu__62StqjtFBN-JXqBf7Q
《自然-通訊》本周發表的一篇論文Regeneration of severely damaged lungs using an interventional cross-circulation platform報導了利用體外器官支持系統讓受損豬肺再生。初步結果顯示,受損後的豬肺或能進行修復,並用於器官移植。
圖1:實驗中先用胃內容物吸入造成損傷,再以交叉循環系統恢復再生這一供體器官。
圖源:Dr. Brandon Guenthart
胃內容物吸入是指胃內物質進入呼吸道,這種常見損傷會導致肺臟無法用於移植。鑑於現在全球都面臨著移植供體短缺的問題,受損肺臟再生技術有望擴充適合移植的器官庫。
美國範德堡大學的Matthew Bacchetta和同事研究了嚴重受損肺臟再生後達到移植標準的可能性。作者在8隻豬的體內再現了胃內容物吸入性損傷,並通過體外支持系統將受損肺臟與受體動物的循環系統相連,對器官進行維持。利用這一交叉循環系統,供體肺在豬體外最長能維持36個小時,讓一系列治療幹預措施得以進行。該系統不僅能讓受損肺臟再生,還能提高其功能,且再生後的肺臟滿足所有移植條件。
圖2:正在進行中的交叉循環幹預過程。圖源:Dr. Brandon Guenthart
還需開展進一步研究確定肺移植後的功能肺活量以及該方法的安全性。由於人體內的器官移植必須接受免疫抑制治療,未來還應對免疫抑制對肺恢復的影響做進一步評估。
摘要:The number of available donor organs limits lung transplantation, the only lifesaving therapy for the increasing population of patients with end-stage lung disease. A prevalent etiology of injury that renders lungs unacceptable for transplantation is gastric aspiration, a deleterious insult to the pulmonary epithelium. Currently, severely damaged donor lungs cannot be salvaged with existing devices or methods. Here we report the regeneration of severely damaged lungs repaired to meet transplantation criteria by utilizing an interventional cross-circulation platform in a clinically relevant swine model of gastric aspiration injury. Enabled by cross-circulation with a living swine, prolonged extracorporeal support of damaged lungs results in significant improvements in lung function, cellular regeneration, and the development of diagnostic tools for non-invasive organ evaluation and repair. We therefore propose that the use of an interventional cross-circulation platform could enable recovery of otherwise unsalvageable lungs and thus expand the donor organ pool.
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期刊介紹:Nature Communications (https://www.nature.com/ncomms/) is an open access journal that publishes high-quality research from all areas of the natural sciences. Papers published by the journal represent important advances of significance to specialists within each field.
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(來源:科學網)
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