TNX-801新疫苗突破 保護力強免多針接種




Tonix Pharmaceuticals TNX-801疫苗新臨床數據公布 股價升2%

生物製藥公司Tonix Pharmaceuticals Holding Corp.(納斯達克代號:TNXP)近日於2025年維也納疫苗大會中,展示了其TNX-801疫苗候選產品的最新前臨床數據,消息公布後其股價即上升約2%。

Tonix表示,這款基於重組馬痘病毒的疫苗展現出持久免疫力的潛力,同時相較於傳統正痘病毒疫苗,毒性大幅減弱。研究中一項重要發現是,TNX-801以皮下注射方式接種,所帶來的保護效果與皮膚穿刺注射相當,公司未來將優先推動皮下注射方式的研發。

前臨床研究顯示,TNX-801在人體真皮細胞中的複製率比已獲批的痘苗株低27到119倍。在干擾素受體缺失的小鼠體內,其毒性更是比傳統疫苗低最多達10萬倍。這些數據強調了該疫苗的安全性大幅提升。

此外,單劑量的TNX-801能在多種動物模型中,包括免疫力低下的動物,產生強烈的結合抗體及中和抗體反應。所有接種過的獼猴在遭遇致命的第一類猴痘病毒挑戰後均無病變生存,而兔子模型則在14個月內保持完全保護。

TNX-801正被開發為控制猴痘疫情爆發的潛在疫苗工具,亦作為應對天花可能重新出現的準備措施。世界衛生組織及美國疾病控制與預防中心仍將猴痘列為持續的公共衛生威脅。

Tonix強調,TNX-801若能成為單劑量疫苗,將簡化疫情應對流程,免除目前獲批疫苗需多次接種的繁複安排。

評論與分析:

Tonix Pharmaceuticals此番公布的TNX-801疫苗數據,突顯了現代疫苗設計在安全性與效能上的巨大進步。其以馬痘病毒為基底的重組疫苗不僅大幅降低病毒複製能力和毒性,還能在單劑量下產生強烈且長效的免疫反應,這對於應急疫情控制尤其重要。

在傳統疫苗多需皮膚穿刺且多劑次接種的情況下,TNX-801的皮下注射及單劑量方案若能成功推廣,將大幅提高疫苗接種的便利性和覆蓋率,降低公共衛生系統的負擔。這種策略不僅適用於猴痘,也為未來可能的天花病毒威脅提供了更靈活的防護手段。

然而,前臨床數據雖然令人鼓舞,疫苗最終能否在人體臨床試驗中證明安全有效,仍是決定其市場前景的關鍵。此類創新疫苗的監管審批過程也將嚴格,尤其是在疫苗安全性方面需長期監測。此外,全球疫苗接種政策與資源分配亦影響其實際應用效果。

綜觀而言,Tonix的TNX-801代表了疫苗技術一大步,若能成功商業化,將為應對新興及再現傳染病提供強有力的工具,也為投資者帶來潛在機會。未來值得關注其臨床進展及監管動向,這將是疫苗行業中一個重要的發展指標。

以上文章由特價GPT API KEY所翻譯及撰寫。

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