New Sample Introduction Method Improves Efficiency of scIP-MS for Elemental Analysis

Researchers from Chiba University have developed a novel approach to improve the elemental analysis of mammalian cells using single-cell inductively coupled plasma mass spectrometry (scICP-MS). The study, published in the Journal of Analytical Atomic Spectrometry, introduces a microdroplet generator (µDG) as a sample introduction system, addressing limitations in analyzing fragile mammalian cells.

Traditional scICP-MS techniques, while effective for yeast cells, often damage mammalian cells during analysis. The research team, led by Yu-ki Tanaka, compared a conventional nebulizer system with their new µDG system. They found that the µDG significantly increased cell transport efficiency and preserved the original structure of K562 cells, a type of human leukemia cell.

The µDG system demonstrated improved detection of elements such as magnesium, iron, phosphorus, sulfur, and zinc in K562 cells. Dr. Tanaka explained, "We have expanded the potential of scICP-MS technology to mammalian cultured cells, developing a robust analytical technique for measuring elemental content in mammalian cultured cells." 

The study revealed that cell size influences the shear stress during nebulization, with larger cells experiencing more damage. The µDG system mitigates this issue, allowing for more accurate elemental analysis of individual cells.

"One promising social implementation of scICP-MS technology is for the prognosis and diagnosis of diseases. Health conditions can be evaluated by analyzing the elemental composition within the body and even at the level of individual cells. Blood cell samples, which can be easily collected from both patients and healthy individuals, serve as a primary target for diagnostics and prognostics using scICP-MS,” Dr. Tanaka added.