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yexuqing木蟲之王 (文學(xué)泰斗)
太陽系系主任
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[交流]
Nanobody-based recombinant antivenom for cobra, mamba and rinkhals bites 已有2人參與
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Nanobody-based recombinant antivenom for cobra, mamba and rinkhals bites 針對眼鏡蛇、曼巴與唾蛇咬傷的基于納米抗體重組抗蛇毒血清 ▲ 作者:Shirin Ahmadi, Nick J. Burlet et al. ▲鏈接: https://www.nature.com/articles/s41586-025-09661-0 ▲摘要: 研究者采用18種毒蛇(含曼巴蛇、眼鏡蛇與唾蛇)的毒液對羊駝和大羊駝進(jìn)行免疫,構(gòu)建噬菌體展示文庫并篩選出高親和力廣譜中和性納米抗體。 他們將其中8種納米抗體配伍成精確定義的寡克隆混合物,成功研制出能中和7個毒素家族/亞家族的多價重組抗蛇毒血清。該血清在體內(nèi)實(shí)驗(yàn)中可有效抵御17種非洲眼鏡蛇科毒蛇的致死毒性,并對所有測試的細(xì)胞毒性毒液所致皮膚壞死產(chǎn)生顯著抑制效果。 這種重組抗蛇毒血清的效能優(yōu)于現(xiàn)行血漿源性抗蛇毒血清,有望為非洲大陸所有醫(yī)學(xué)相關(guān)眼鏡蛇科毒蛇咬傷提供全面防護(hù)方案。 ▲ Abstract: 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. |

金蟲 (正式寫手)

至尊木蟲 (著名寫手)
| Nanobody-based recombinant antivenom for cobra, mamba and rinkhals bites |

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