Fatty-Acid Uptake in Prostate Cancer Cells Using Dynamic Microfluidic Raman Technology

Area of Science:

• Biochemistry
• Cell Biology
• Cancer Research

Background:

• Dietary fatty acid (FA) intake is linked to prostate cancer progression, with specific FAs like palmitic acid (PA) and arachidonic acid (AA) potentially promoting it.
• Understanding how different FAs interact with prostate cancer cells is crucial for developing targeted interventions.

Purpose of the Study:

• To investigate the real-time, single-cell uptake of various fatty acids by prostate cancer cells.
• To determine the effect of omega-3 fatty acids (DHA, EPA) on the uptake of pro-cancerous fatty acids (PA, AA).

Main Methods:

• Utilized a novel experimental setup combining Raman microscopy with a shear-flow microfluidic system for real-time monitoring of FA uptake.
• Employed deuterated FAs (PA, AA) and omega-3 FAs (DHA, EPA) for uptake studies.
• Validated cellular lipid uptake using complementary flow cytometry with Nile red staining.

Main Results:

• The novel system successfully monitored the real-time, single-cell uptake of PA, AA, DHA, and EPA by prostate cancer cells.
• Docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) demonstrated inhibitory effects on the cellular uptake of palmitic acid (PA) and arachidonic acid (AA).

Conclusions:

• Omega-3 fatty acids (DHA and EPA) can modulate the uptake of specific dietary fatty acids implicated in prostate cancer progression.
• This research provides a new methodology for studying cellular lipid metabolism in real-time and offers insights into potential dietary strategies for prostate cancer management.