A Cell-Surface-Targeted Fluorogenic Probe for Detection of Sulfatase 2 Activity.

Area of Science:

• Biochemistry
• Molecular Biology
• Cancer Research

Background:

• Sulfatase 2 (Sulf-2) is an extracellular enzyme modulating heparan sulfate proteoglycans (HSPGs).
• Sulf-2 activity is a critical biomarker for various pathological conditions, including cancer.
• Monitoring Sulf-2 in living cells is crucial for diagnostics and therapeutic evaluation.

Purpose of the Study:

• To develop a novel tool for visualizing endogenous Sulf-2 activity in living cells.
• To assess the potential of this tool for cancer diagnostics and therapeutic research.

Main Methods:

• Development of a plasma-membrane-targeted fluorogenic probe, MAR-S.
• Incubation of MAR-S with culture supernatant from pancreatic cancer cells.
• Time-lapse monitoring of endogenous Sulf-2 activity in living cancer cells overexpressing Sulf-2.

Main Results:

• MAR-S exhibited a significant increase in fluorescence (approx. 540 nm) upon incubation with Sulf-2-containing supernatant.
• MAR-S enabled time-lapse visualization of endogenous Sulf-2 activity in living cancer cells.
• Demonstrated the probe's utility for monitoring Sulf-2 in a cancer model.

Conclusions:

• MAR-S is a novel fluorogenic probe for visualizing Sulf-2 activity in living cells.
• MAR-S facilitates real-time monitoring of endogenous Sulf-2, valuable for cancer research.
• The probe shows potential for Sulf-2-related cancer diagnostics and therapeutic strategies.