Optofluidic device for label-free cell classification from whole blood.

Optofluidic device for label-free cell classification from whole blood.
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用于全血无标记细胞分类的光流控装置。

DOI:
10.1039/c2lc40560a
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发表时间:
2012
期刊:
影响因子:
6.1
通讯作者:
Lo,Yu-Hwa
Lo,Yu-Hwa
中科院分区:
工程技术1区
文献类型:
--
作者:
Wu,Tsung-Feng;Mei,Zhe;Lo,Yu-Hwa

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我们展示了一种独特的光流体芯片实验室设备,可以测量光学编码的前向散射信号。通过空间模式的设计,我们可以测量每个单元在流中的位置和速度,并在通道横截面上生成二维单元分布图。此外,我们已经证明了细胞分布对其尺寸和刚度高度敏感。后者是细胞分类的重要生物标志物,我们的方法提供了一种简单而明确的方法来根据细胞的大小和硬度对细胞进行分类。我们已经用活的和固定的海拉细胞证明了这一概念。由于中性粒细胞的硬度和大小与其他类型的白细胞不同,我们已经证明了从其他血细胞中检测中性粒细胞。最后,我们用5 μL的人血进行了测试。在一个大大简化的血液制备过程中,跳过了抗凝、离心、抗体标记或染色、过滤等通常的步骤,我们已经证明了我们的设备和检测原理可以计数全人血液中的中性粒细胞。我们的系统结构紧凑,价格低廉,易于制造和操作,主要硬件部分是一个普通的激光二极管和一个Si PIN光电接收器。虽然结果仍处于初步阶段,但研究表明,这种光流体装置有望成为一种测量中性粒细胞浓度的护理点和家庭护理装置,中性粒细胞浓度是癌症化疗患者免疫功能的关键指标。
We demonstrated a unique optofluidic lab-on-a-chip device that can measure optically encoded forward scattering signals. From the design of the spatial pattern, we can measure the position and velocity of each cell in the flow and generate a 2-D cell distribution plot over the cross section of the channel. Moreover, we have demonstrated that the cell distribution is highly sensitive to its size and stiffness. The latter is an important biomarker for cell classification and our method offers a simple and unequivocal method to classify cells by their size and stiffness. We have proved the concept using live and fixed HeLa cells. Due to the stiffness and size difference of neutrophils compared to other types of white blood cells, we have demonstrated detection of neutrophils from other blood cells. Finally, we have performed the test using 5 μL of human blood. In a greatly simplified blood preparation process, skipping the usual steps of anticoagulation, centrifuge, antibody labelling or staining, filtering, etc., we have demonstrated that our device and detection principle can count neutrophils in whole human blood. Our system is compact, inexpensive and simple to fabricate and operate, having a commodity laser diode and a Si PIN photoreceiver as the main pieces of hardware. Although the results are still preliminary, the studies indicate that this optofluidic device holds promise to be a point-of-care and home care device to measure neutrophil concentration, which is the key indicator of the immune functions for cancer patients undergoing chemotherapy.
A431 细胞中表皮生长因子和钒酸盐对 45Ca2 流入和 22Na /H 交换的激活与磷脂酰肌醇周转无关,并受到佛波酯和二酰甘油的抑制。
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