Stabilized diverse HIV-1 envelope trimers for vaccine design

Qian Wang, Bingting Ma, Qingtai Liang, Angqi Zhu, Hua Wang, Lili Fu, Xiaoxu Han, Xuanling Shi, Ye Xiang, Hong Shang & Linqi Zhang
One of the major goals in HIV-1 vaccine development is to achieve properly folded and stabilized envelope glycoprotein (Env) trimers that mimic the native Env on the mature virion. Here, we design and characterize uncleaved prefusion-optimized (UFO) trimers for 12 Envs currently circulating in China. Biochemical and biophysical characterization of these UFO trimers identified two subtype B/Bʹ Envs, CNE6 and MG13, which exhibited the highest trimer content and stability at a level comparable to the...
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