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Nanobody-based recombinant antivenom for cobra, mamba and rinkhals bites ÒÑÓÐ2È˲ÎÓë
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Nanobody-based recombinant antivenom for cobra, mamba and rinkhals bites Õë¶ÔÑÛ¾µÉß¡¢Âü°ÍÓëÍÙÉßÒ§É˵ĻùÓÚÄÉÃ׿¹ÌåÖØ×鿹Éß¶¾ÑªÇå ¡ø ×÷ÕߣºShirin Ahmadi, Nick J. Burlet et al. ¡øÁ´½Ó£º https://www.nature.com/articles/s41586-025-09661-0 ¡øÕªÒª£º Ñо¿Õß²ÉÓÃ18ÖÖ¶¾Éߣ¨º¬Âü°ÍÉß¡¢ÑÛ¾µÉßÓëÍÙÉߣ©µÄ¶¾Òº¶ÔÑòÍպʹóÑòÍÕ½øÐÐÃâÒߣ¬¹¹½¨ÊɾúÌåչʾÎĿⲢɸѡ³ö¸ßÇ׺ÍÁ¦¹ãÆ×ÖкÍÐÔÄÉÃ׿¹Ìå¡£ ËûÃǽ«ÆäÖÐ8ÖÖÄÉÃ׿¹ÌåÅäÎé³É¾«È·¶¨ÒåµÄ¹Ñ¿Ë¡»ìºÏÎ³É¹¦ÑÐÖÆ³öÄÜÖкÍ7¸ö¶¾ËؼÒ×å/ÑǼÒ×åµÄ¶à¼ÛÖØ×鿹Éß¶¾ÑªÇå¡£¸ÃѪÇåÔÚÌåÄÚʵÑéÖпÉÓÐЧµÖÓù17ÖÖ·ÇÖÞÑÛ¾µÉ߿ƶ¾ÉßµÄÖÂËÀ¶¾ÐÔ£¬²¢¶ÔËùÓвâÊÔµÄϸ°û¶¾ÐÔ¶¾ÒºËùÖÂÆ¤·ô»µËÀ²úÉúÏÔÖøÒÖÖÆÐ§¹û¡£ ÕâÖÖÖØ×鿹Éß¶¾ÑªÇåµÄЧÄÜÓÅÓÚÏÖÐÐѪ½¬Ô´ÐÔ¿¹Éß¶¾ÑªÇ壬ÓÐÍûΪ·ÇÖÞ´ó½ËùÓÐҽѧÏà¹ØÑÛ¾µÉ߿ƶ¾ÉßÒ§ÉËÌá¹©È«Ãæ·À»¤·½°¸¡£ ¡ø Abstract£º Here we addressed this challenge by immunizing an alpaca and a llama with the venoms of 18 different snakes, including mambas, cobras and a rinkhals, constructing phage display libraries, and identifying high-affinity broadly neutralizing nanobodies. We combined eight of these nanobodies into a defined oligoclonal mixture, resulting in an experimental polyvalent recombinant antivenom that was capable of neutralizing seven toxin families or subfamilies. This antivenom effectively prevented venom-induced lethality in vivo across 17 African elapid snake species and markedly reduced venom-induced dermonecrosis for all tested cytotoxic venoms. The recombinant antivenom performed better than a currently used plasma-derived antivenom and therefore shows considerable promise for comprehensive, continent-wide protection against snakebites by all medically relevant African elapids. |
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