²¡¶¾Ñ§¹ú¼ÒÖØµãʵÑéÊÒ´Þ×ÚÇ¿ÍŶÓ×·×Ùµ½µ¥¸öÁ÷¸Ð²¡¶¾Íѿǹý³Ì
½üÈÕ£¬¹ú¼ÊѧÊõÆÚ¿¯¡¶PANS¡·ÔÚÏß·¢±íÁ˲¡¶¾Ñ§¹ú¼ÒÖØµãʵÑéÊÒ´Þ×ÚÇ¿½ÌÊÚÍŶӵÄ×îÐÂÑо¿³É¹û£¬ÂÛÎÄÌâΪReal-time dissection of dynamic uncoating of individual influenzaviruses£¨ÊµÊ±¶¯Ì¬½âÎöµ¥¸öÁ÷¸Ð²¡¶¾Íѿǹý³Ì£©¡£¸ÃÍŶÓÀûÓÃÁ¿×ÓµãÌØÒìÐÔ±ê¼Ç²¡¶¾µÄ»ùÒò×éºÍµ¥¿ÅÁ£Ê¾×Ù¼¼Êõ£¬ÊµÊ±¶¯Ì¬½âÎöÁ˵¥¸öÁ÷¸Ð²¡¶¾µÄÍѿǹý³Ì£¬½ÒʾÁ˲¡¶¾°Ë½Ú¶ÎRNAÒÔµ¥ÌåÐÎʽÊͷŵ½Ï¸°ûÖʲ¢½øÈëϸ°ûºË¼°ÆäÔÚϸ°ûºËÄڵĶ¯Ì¬ÐÐΪ¼°»úÖÆ¡£
½á¹ûËÙÀÀ
¸ÃÍŶÓÊ×ÏȽ¨Á¢ÁËÁ¿×ÓµãλµãÌØÒìÐÔ±ê¼Ç¼×ÐÍÁ÷¸Ð²¡¶¾»ùÒò×é¼¼Êõ¡£ÔÚ²¡¶¾¸ÐȾ¹ý³ÌÖУ¬²¡¶¾ºËÌǺ˵°°×¸´ºÏÎvRNP£©¶¥¶ËµÄ¾ÛºÏøµ°°×PA±»¿É¿ØÉúÎïËØ»¯£¬ÓëÁ´Ã¹Ç׺ÍËØÐÞÊεÄÁ¿×ÓµãÌØÒìÐÔ½áºÏ£¬²¢×é×°½øÈë³ÉÊìµÄ×Ó´ú²¡¶¾Á£×Ó£¬´Ó¶ø»ñµÃ»ùÒò×é±»Á¿×Óµã±ê¼ÇµÄÁ÷¸Ð²¡¶¾¡£»ùÓÚÁ¿×ÓµãµÄ¸ßÁÁ¶ÈºÍÄÍ¹âÆ¯°×µÈÌØµã£¬ÀûÓõ¥¿ÅÁ£Ê¾×Ù¼¼Êõ£¬½áºÏ²¡¶¾°üĤºÍϸ°û×é·ÖÓ«¹â±ê¼Ç£¬¶Ôµ¥¿ÅÁ÷¸Ð²¡¶¾¸ÐȾËÞÖ÷ϸ°ûʱµÄÍѿǹý³Ì½øÐÐʵʱ¶¯Ì¬¿ÉÊÓ»¯·ÖÎö¡£ÊµÊ±¶¯Ì¬½ÒʾÁËÁ÷¸Ð²¡¶¾ÔÚ¸ÐȾºó30-90·ÖÖÓ£¬²¡¶¾ÓÉÔçÆÚÄÚÌå½øÈëÍíÆÚÄÚÌå·¢ÉúĤÈںϡ¢»ùÒò×éÓ벡¶¾°üĤ·ÖÀë¡¢µ¥¸ö½Ú¶Î»ùÒò´ÓÍíÆÚÄÚÌåÖзֱðÊÍ·Å¡¢½âÀëÊͷŵĵ¥¸ö½Ú¶Î»ùÒòÈëºË¡¢¼°ÆäÔÚϸ°ûºËÄÚÔËÊäµÄ¶¯Ì¬¹ý³Ì¡£·¢ÏÖÁ÷¸Ð²¡¶¾°Ë¸övRNPÔÚÍѿǹý³ÌÖÐÒÔµ¥¶À¶ø·Ç×éÍŵķ½Ê½´ÓÍíÆÚÄÚÌåÖÐÊͷŽøÈëϸ°ûÖÊ£¬ÕâЩµ¥¶ÀµÄvRNPÒÔÌØÕ÷ÐÔÈý½×¶ÎÖ÷¶¯ÔËÊä»úÖÆ½øÈëϸ°ûºË£¬ÈëºËºóµÄvRNPÒÔÁ½ÖÖ²»Í¬µÄÀ©É¢Ä£Ê½ÔËÊäµ½Æä¸´ÖÆ/ת¼λµãµÈÖØÒª¹ý³ÌÓë»úÖÆ¡£¸ÃÑо¿ÎªÊÀ½çÉÏÊ״μǼµ½µ¥¸öÁ÷¸Ð²¡¶¾ÍѿǵÄʵʱ¶¯Ì¬¹ý³Ì£¬¶ÔÉîÈëÀí½âÁ÷¸Ð²¡¶¾ÔÚËÞÖ÷ϸ°ûÖеÄÉúÃüÖÜÆÚ¾ßÓÐÖØÒªÒâÒ壬²¢½«Îª¿ª·¢ÐµĿ¹²¡¶¾Í¾¾¶Ìṩ˼·¡£
?
ABSTRACT: Uncoating is an obligatory step in the virus life cycle that serves as an antiviral target. Unfortunately, it is challenging to study viral uncoating due to methodology limitations for detecting this transient and dynamic event. The uncoating of influenza A virus (IAV), which contains an unusual genome of eight segmented RNAs, is particularly poorly understood. Here, by encapsulating quantum dot (QD)-conjugated viral ribonucleoprotein complexes (vRNPs) within infectious IAV virions and applying single-particle imaging, we tracked the uncoating process of individual IAV virions. Approximately 30% of IAV particles were found to undergo uncoating through fusion with late endosomes in the ¡°around-nucleus¡± region at 30 to 90 minutes postinfection. Inhibition of viral M2 proton channels and cellular endosome acidification prevented IAV uncoating. IAV vRNPs are released separately into the cytosol after virus uncoating. Then, individual vRNPs undergo a three-stage movement to the cell nucleus and display two diffusion patterns when inside the nucleus. These findings reveal IAV uncoating and vRNP trafficking mechanisms, filling a critical gap in knowledge about influenza viral infection.
Öйú¿ÆÑ§ÔºÎ人²¡¶¾Ñо¿Ëù´Þ×ÚÇ¿Ñо¿Ô±Îª¸ÃÂÛÎÄͨѶ×÷Õߣ¬Çس岩ʿΪµÚÒ»×÷Õß¡£¸ÃÑо¿µÃµ½ÁËÖйú¿ÆÑ§ÔºÕ½ÂÔÐÔÏȵ¼¿Æ¼¼×¨Ïî¡¢¹ú¼ÒÖØµãÑз¢¼Æ»®¡¢¹ú¼Ò×ÔÈ»¿ÆÑ§»ù½ð¡¢Öйú¿ÆÑ§ÔºÇàÄ괴дٽø»áµÈ»ù½ðÏîÄ¿µÄ×ÊÖú¡£
?
²Î¿¼£º
1.ÔÎÄÁ´½Ó£º
https://doi.org/10.1073/pnas.1812632116
2.²¡¶¾Ñ§¹ú¼ÒÖØµãʵÑéÊÒ¹ÙÍø£º
https://klv.whu.edu.cn/index.php/View/321.html
?
ÎÄÕÂÄÚÈÝÀ´Ô´£º²¡¶¾Ñ§½ç
°æÈ¨¹éÔ×÷ÕßËùÓУ¬ÈçÓÐÇÖȨ£¬ÇëÁªÏµÉ¾³ý
?
VSport»ÝÉú¡ª¡ª×·ÇóÆ·ÖÊ׿Խ£¬ÖÂÁ¦½¡¿µÊÂÒµ
Á˽â¸ü¶à×ÊѶ£¬Çëʶ±ðÏ·½¶þάÂ룬¹Ø×¢VSport»ÝÉú~