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【细胞形态日记】iPSC“变形记”
来源:索码生物 发布日期:2026-01-26 浏览次数:5次

iPSC的形态世界,解读这些微观生命背后的秘密。

刚复苏的iPSC——“皱缩的旅行者”

刚复苏的iPSC,通常形态不佳:细胞缩成一团,边缘不清,甚至出现大量死亡漂浮细胞。此时我们通常会添加Y27632(ROCK抑制剂)来提高细胞存活率。

但值得注意的是,Y27632也会暂时改变细胞形态:细胞会暂时拉长,出现类似“梭形”或“星形”的奇怪形态,细胞间连接变得松散。别担心,这是药物在起作用,保护细胞免于凋亡——它只是“细胞的临时防护服”。

驯化后的iPSC——“完美的克隆圆盘”

经过2-3天的恢复与驯化,iPSC逐渐展现出其经典形态:

  • 形成边界清晰、致密饱满的克隆集落

  • 细胞单层生长,呈规则的圆形或椭圆形

  • 细胞核质比高,边缘光滑

  • 克隆内部的细胞排列紧密,几乎看不到间隙

 

这才是iPSC该有的样子!整齐划一,仿佛在向你打招呼:“我现在状态很好!”

传代前的风险——“分化的小手”

在传代前,我们常会观察到一些克隆边缘出现异常

  • 局部区域细胞变长、拉丝

  • 形成类似“小手”或“触角”的结构

  • 该区域细胞颜色变深,边界模糊

这是自发分化的早期表现!一旦发现,提示你需要尽快传代或剔除分化区域,否则整个克隆都可能“沦陷”。

完全分化的克隆——“点状爆发”

如果一个克隆完全分化,它的形态会发生根本性改变:

  • 克隆失去原有清晰边界

  • 内部出现密集点状或网状结构

  • 细胞可能多层生长,明显隆起

  • 可能向神经元、上皮细胞或成纤维细胞等形态转变

这时候,这个克隆就不再适合做多能性研究了。

高汇合度的iPSC——“连片的圆润星球”

当细胞汇合度达到80%以上时,克隆相互接触,连成一片:

  • 细胞仍保持饱满、圆润的形态

  • 克隆之间边界消失,形成整齐的单层

  • 整体看起来像一片“细胞海洋”,均匀而致密

 

这时候是传代的理想时机——细胞状态佳。

✨ 形态小贴士:

  1. Y27632会暂时改变形态,应在复苏24-48小时后换液去除

  2. “小手”状结构是分化的早期标志,需及时处理

  3. 最理想的iPSC形态:边界清晰、致密饱满、核质比高

  4. 定期观察、及时传代是维持iPSC多能性的关键


每一次显微镜下的观察,都是与细胞的直接对话。理解它们的形态语言,才能更好地驾驭iPSC的培养与分化。

希望这篇简单的形态指南,能帮助你在干细胞培养路上更加得心应手!


 

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  177. /www/wwwroot/somaxbio.com/runtime/temp/63ab06502311cf3cb46c41aa08a3a0d8.php ( 22.65 KB )
  178. /www/wwwroot/somaxbio.com/app/index/model/LabelModel.php ( 7.63 KB )
  179. /www/wwwroot/somaxbio.com/vendor/topthink/framework/src/think/Response.php ( 8.81 KB )
  180. /www/wwwroot/somaxbio.com/vendor/topthink/framework/src/think/response/Html.php ( 0.97 KB )
  181. /www/wwwroot/somaxbio.com/vendor/topthink/think-trace/src/Html.php ( 4.30 KB )
  1. CONNECT:[ UseTime:0.000513s ] mysql:host=localhost;port=3306;dbname=somaxbio_com;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `db_cat` [ RunTime:0.000922s ]
  3. SELECT * FROM `db_cat` WHERE `catid` = 11 LIMIT 1 [ RunTime:0.000401s ]
  4. SHOW FULL COLUMNS FROM `db_cat_data` [ RunTime:0.000883s ]
  5. SELECT * FROM `db_cat_data` WHERE `catid` = 11 LIMIT 1 [ RunTime:0.000289s ]
  6. SHOW FULL COLUMNS FROM `db_cms_news` [ RunTime:0.000927s ]
  7. SELECT * FROM `db_cms_news` WHERE `id` = 904 LIMIT 1 [ RunTime:0.001057s ]
  8. SHOW FULL COLUMNS FROM `db_cms_news_data` [ RunTime:0.000979s ]
  9. SELECT * FROM `db_cms_news_data` WHERE `id` = 904 LIMIT 1 [ RunTime:0.000414s ]
  10. SHOW FULL COLUMNS FROM `db_replace` [ RunTime:0.000787s ]
  11. SELECT * FROM `db_replace` ORDER BY `sort` ASC LIMIT 2 [ RunTime:0.000279s ]
  12. UPDATE `db_cms_news` SET `views` = `views` + 1 WHERE `id` = 904 [ RunTime:0.002321s ]
  13. SELECT `title`,`id`,`catid` FROM `db_cms_news` WHERE ( `catid` = 11 AND `id` <> 904 AND `newstime` >= 1769396632 ) ORDER BY `newstime` ASC,`id` ASC LIMIT 1 [ RunTime:0.000768s ]
  14. SELECT `titleurl`,`link` FROM `db_cms_news` WHERE `id` = 903 LIMIT 1 [ RunTime:0.000424s ]
  15. SELECT `title`,`id`,`catid` FROM `db_cms_news` WHERE ( `catid` = 11 AND `id` <> 904 AND `newstime` <= 1769396632 ) ORDER BY `newstime` DESC,`id` DESC LIMIT 1 [ RunTime:0.000696s ]
  16. SELECT `titleurl`,`link` FROM `db_cms_news` WHERE `id` = 906 LIMIT 1 [ RunTime:0.000418s ]
  17. SELECT * FROM `db_cat` WHERE ( `pid` = 7 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000467s ]
  18. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 20 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000415s ]
  19. SHOW FULL COLUMNS FROM `db_cms_product` [ RunTime:0.001022s ]
  20. SELECT * FROM `db_cms_product` WHERE ( `catid` = 20 ) ORDER BY `sort` ASC [ RunTime:0.000555s ]
  21. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 51 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000429s ]
  22. SELECT * FROM `db_cms_product` WHERE ( `catid` = 51 ) ORDER BY `sort` ASC [ RunTime:0.000562s ]
  23. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 21 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000367s ]
  24. SELECT * FROM `db_cms_product` WHERE ( `catid` = 21 ) ORDER BY `sort` ASC [ RunTime:0.000456s ]
  25. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 22 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000391s ]
  26. SELECT * FROM `db_cms_product` WHERE ( `catid` = 22 ) ORDER BY `sort` ASC [ RunTime:0.000565s ]
  27. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 53 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000395s ]
  28. SELECT * FROM `db_cms_product` WHERE ( `catid` = 53 ) ORDER BY `sort` ASC [ RunTime:0.000462s ]
  29. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 41 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000417s ]
  30. SELECT * FROM `db_cms_product` WHERE ( `catid` = 41 ) ORDER BY `sort` ASC [ RunTime:0.000523s ]
  31. SELECT * FROM `db_cat` WHERE ( `pid` = 7 AND `status` = 1 ) ORDER BY `sort` ASC,`catid` ASC [ RunTime:0.000471s ]
  32. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 20 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000352s ]
  33. SELECT * FROM `db_cms_product` WHERE ( `catid` = 20 ) ORDER BY `sort` ASC [ RunTime:0.000574s ]
  34. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 51 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000446s ]
  35. SELECT * FROM `db_cms_product` WHERE ( `catid` = 51 ) ORDER BY `sort` ASC [ RunTime:0.000396s ]
  36. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 21 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000350s ]
  37. SELECT * FROM `db_cms_product` WHERE ( `catid` = 21 ) ORDER BY `sort` ASC [ RunTime:0.000372s ]
  38. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 22 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000343s ]
  39. SELECT * FROM `db_cms_product` WHERE ( `catid` = 22 ) ORDER BY `sort` ASC [ RunTime:0.000527s ]
  40. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 53 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000436s ]
  41. SELECT * FROM `db_cms_product` WHERE ( `catid` = 53 ) ORDER BY `sort` ASC [ RunTime:0.000541s ]
  42. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 41 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000366s ]
  43. SELECT * FROM `db_cms_product` WHERE ( `catid` = 41 ) ORDER BY `sort` ASC [ RunTime:0.000500s ]
  44. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 11 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000467s ]
  45. SELECT * FROM `db_cms_news` WHERE ( `catid` = 11 ) ORDER BY `sort` ASC,`is_top` DESC,`is_good` DESC,`newstime` DESC LIMIT 5 [ RunTime:0.002595s ]
  46. SELECT * FROM `db_cat` WHERE ( `pid` = 7 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000520s ]
  47. SELECT `catid`,`modelid` FROM `db_cat` WHERE ( `pid` = 41 AND `status` = 1 ) ORDER BY `sort` ASC [ RunTime:0.000384s ]
  48. SELECT * FROM `db_cms_product` WHERE ( `catid` = 41 ) ORDER BY `sort` ASC [ RunTime:0.000469s ]
0.228175s