放射線照射後の甲状腺機能低下症を標的とする:抗酸化および免疫調節のためのデュアルアクションアプローチとしてのエレクトロスピニング足場
Maria Heim1,2, Ella-Louise Handley1, Daniel Grant2
1Institute for Bioengineering, School of Engineering, University of Edinburgh, Edinburgh, UK.
Advanced healthcare materials
|February 4, 2026
まとめ
アデノシンを配合した新しいPCL足場は、放射線誘発性甲状腺機能低下症(RIHT)の治療に有望です。これらの足場は、酸化ストレスと炎症を軽減し、甲状腺組織の修復とマクロファージの再分極を促進して、より良い結果をもたらします。
科学分野:
- 生体材料科学;内分泌学;免疫学
背景:
- 放射線誘発性甲状腺機能低下症(RIHT)は、頭頸部放射線療法に共通する副作用であり、酸化ストレス、炎症、および免疫調節不全を特徴としています。RIHTの現在の治療法はホルモン補充療法に焦点を当てていますが、根本的な甲状腺組織の損傷に対処していません。マクロファージの挙動を標的とし、酸化ストレスを軽減することは、放射線後の甲状腺恒常性の回復のための有望な戦略です。
主な方法:
- エレクトロスピニングを用いた様々な濃度のアデノシン(0.5%〜3%)を含むポリカプロラクトン(PCL)足場の作製。足場の形態、安定性、およびサイロサイトの増殖、上皮の凝集、抗酸化酵素の発現(GPX1、CAT)、および老化/アポトーシスのマーカー(RGN、CDKN2A、CASP3)への影響のインビトロ評価。THP-1由来マクロファージの分極に対するアデノシン足場の影響のインビトロ評価、M1(CD86、CD80、TNFα)およびM2(CD206、CD163)マーカーの発現を評価。
結論:
- 線維症と酸化ストレスは、放射線誘発性甲状腺機能低下症(RIHT)の病態生理に寄与する重要な要因です。アデノシンをブレンドしたPCL足場は、酸化ストレスとマクロファージ応答を調節することにより、これらのRIHTメカニズムを標的とするための実行可能なプラットフォームを表します。これらの発見は、RIHTの治療戦略としてアデノシン-PCL足場の有効性を検証するための将来のインビボ研究の基礎を提供します。
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