24小时热门版块排行榜    

查看: 406  |  回复: 0

liusu05

铁虫 (初入文坛)


[交流] 显微镜的文献分享之ECHO显微镜助力活体心脏中胚胎干细胞来源的研究

在2017年12月,由Xulei Qin,Huaxiao Yang,Haodi Wu,Xin Zhao等作者在Advanced Functional Materials中发表一篇了《Photoacoustic Imaging of Embryonic Stem Cell-Derived Cardiomyocytes in Living Hearts with Ultrasensitive Semiconducting Polymer Nanoparticles》的文章。
中文摘要:
人类胚胎干细胞起源的心肌细胞有望成为修复心脏损伤强有力的工具。为了获得最好的结果,我们需要精确追踪心脏移植细胞,因此先进的分子成像技术是至关重要的。本研究中首次发现,将一类含有半导体聚合物(SPs)的光声纳米粒子(PANPS)作为造影剂,可用于活体小鼠心脏移植hESC-CMs的光声成像(PAI)。这得益于PANPs的两个优势。首先,强光声信号(PA)和SPs特定光谱曲线使得PAI从背景组织中检测和区分少量PANP标记的细胞(2000)具有很高的灵敏度。其次,PANP对hESC-CM的标记效率高,并且也不影响细胞的结构、功能和基因表达。通过超声成像,我们可以利用PANP依赖的高空间分辨率(≈100um)的PAI来评估hESC-CM在活体小鼠心脏中的移植状态。综上所述,本研究探索并验证了SPs新的应用方向,可作为PA造影剂实现对体内标记细胞高灵敏度、高准确度的示踪,凸显了PAI与PANPs结合在心脏再生治疗上的优势。

英文摘要:
Human embryonic stem cell-derived cardiomyocytes (hESC-CMs) have become promising tools to repair injured hearts. To achieve optimal outcomes,advanced molecular imaging methods are essential to accurately track these transplanted cells in the heart. In this study, it is demonstrated for the first time that a class of photoacoustic nanoparticles (PANPs) incorporating semiconducting polymers (SPs) as contrast agents can be used in the photoacoustic imaging (PAI) of transplanted hESC-CMs in living mouse hearts. This is achieved by virtue of two benefits of PANPs. First, strong photoacoustic (PA) signals and specific spectral features of SPs allow PAI to sensitively detect and distinguish a small number of PANP-labeled cells(2000) from background tissues. Second, the PANPs show a high efficiency for hESC-CM labeling without adverse effects on cell structure, function, and gene expression. Assisted by ultrasound imaging, the delivery and engraftment of hESC-CMs in living mouse hearts can be assessed by PANP-based PAI with high spatial resolution (≈100 μm). In summary, this study explores and validates a novel application of SPs as a PA contrast agent to track labeled cells with high sensitivity and accuracy in vivo, highlighting the advantages of integrating PAI and PANPs to advance cardiac regenerative therapies.
回复此楼

» 本帖附件资源列表

» 猜你喜欢

» 本主题相关商家推荐: (我也要在这里推广)

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 liusu05 的主题更新
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 北科281学硕材料求调剂 +8 tcxiaoxx 2026-03-20 9/450 2026-03-23 12:16 by tcxiaoxx
[考研] 材料与化工考研调剂 +3 孅華 2026-03-22 3/150 2026-03-23 11:20 by barlinike
[考研] 298求调剂 +8 上岸6666@ 2026-03-20 8/400 2026-03-23 11:02 by laoshidan
[考研] 307求调剂 +3 余意卿 2026-03-21 3/150 2026-03-23 10:32 by Iveryant
[考研] 276求调剂 +3 YNRYG 2026-03-21 4/200 2026-03-23 08:31 by 醉在风里
[考研] 一志愿东华大学化学070300,求调剂 +7 2117205181 2026-03-21 8/400 2026-03-22 22:55 by chixmc
[考研] 310求调剂 +4 baibai1314 2026-03-16 4/200 2026-03-22 20:19 by edmund7
[考研] 311求调剂 +6 冬十三 2026-03-18 6/300 2026-03-22 20:18 by edmund7
[考研] 材料与化工085600,总分304,本科有两篇sci参与,求调剂 +4 幸运的酱酱 2026-03-22 5/250 2026-03-22 20:15 by edmund7
[考研] 306求调剂 +5 来好运来来来 2026-03-22 5/250 2026-03-22 16:17 by BruceLiu320
[考研] 286求调剂 +10 Faune 2026-03-21 10/500 2026-03-21 23:34 by 314126402
[考研] 297求调剂 +3 喜欢还是不甘心 2026-03-20 3/150 2026-03-21 18:33 by 学员8dgXkO
[考研] 301求调剂 +10 yy要上岸呀 2026-03-17 10/500 2026-03-21 03:14 by JourneyLucky
[考研] 一志愿 西北大学 ,070300化学学硕,总分287,双非一本,求调剂。 +3 晨昏线与星海 2026-03-18 3/150 2026-03-21 00:46 by JourneyLucky
[考研] 一志愿南昌大学,327分,材料与化工085600 +9 Ncdx123456 2026-03-19 9/450 2026-03-20 23:41 by lovewei0727
[考研] 一志愿中海洋材料工程专硕330分求调剂 +8 小材化本科 2026-03-18 8/400 2026-03-20 23:16 by JourneyLucky
[考研] 材料学硕318求调剂 +5 February_Feb 2026-03-19 5/250 2026-03-19 23:51 by 23Postgrad
[考研] 一志愿中国海洋大学,生物学,301分,求调剂 +5 1孙悟空 2026-03-17 6/300 2026-03-19 23:46 by zcl123
[考研] 有没有道铁/土木的想调剂南林,给自己招师弟中~ +3 TqlXswl 2026-03-16 7/350 2026-03-17 15:23 by TqlXswl
[考研] 考研调剂 +3 淇ya_~ 2026-03-17 5/250 2026-03-17 09:25 by Winj1e
信息提示
请填处理意见