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Detection of cancer cells based on glycolytic-regulated surface electrical charges
- Source :
- Biophysics Reports. 5:10-18
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- Over the past decades, cell surface charge, although experimentally observed, has not been well understood particularly from the viewpoint of biophysics. Our recent studies have shown that all cancer cells exhibit negative surface charges that are directly proportional to the secreted lactic acid, a unique cancer metabolic characteristic: high rate of glycolysis. We have therefore designed and developed a set of electrically-charged, fluorescent, and super-paramagnetic nanoprobes, capable of sensitive detection of cancer cells based on the surface charges. These probes are utilized to bind onto cells via electrostatic reaction for capture and magnetic separation. In this fashion, we are able to characterize cell surface charges that are regulated by different metabolic patterns, therefore effectively distinguishing the cancer cells from the normal cells. All 22 cancer cells of different organs are found to be negatively-charged therefore bound strongly by the positively-charged nanoprobes, whereas the normal cells show insignificant binding to the nanoprobes of either charge signs (positive or negative). This finding suggests that all tested cancer cells are negatively-charged and normal cells are either charge-neutral or slightly positive. For diagnosis, cancer cells can be detected, electrostatically bound, and magnetically separated in blood by charged and super-paramagnetic nanoprobes. In therapeutics, circulating cancer cells (CTCs) can be filtered and removed in a continuous fashion to reduce the risk of cancer metastasis. If successful, this new nanotechnology will revolutionize early cancer diagnosis and potentially enable new therapeutics in clinical settings.
- Subjects :
- 0303 health sciences
Chemistry
Cell
Cancer
Cancer metastasis
02 engineering and technology
General Medicine
021001 nanoscience & nanotechnology
medicine.disease
Electric charge
03 medical and health sciences
medicine.anatomical_structure
Circulating tumor cell
Cancer cell
medicine
Biophysics
Glycolysis
Surface charge
0210 nano-technology
030304 developmental biology
Subjects
Details
- ISSN :
- 23643420 and 23643439
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- Biophysics Reports
- Accession number :
- edsair.doi...........07b4f007f0d0c9ee09ba6b41a8d6c4f7