Recent Developments in Pathological pH-Responsive Polymeric Nanobiosensors for Cancer Theranostics

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Oncology

Background:

• Polymeric nanobiosensors (PNBS) show promise for disease detection due to their sensitivity and specificity to tumor-related factors like pH.
• These sensors can be transformed into theranostic polymeric nanobiosensors (TPNBS) by integrating therapeutic agents for combined diagnosis and treatment.
• The polymeric components are crucial for enhancing stability, biocompatibility, and targeted accumulation of TPNBS at pathological sites.

Purpose of the Study:

• To review recent advancements in the design, preparation, and characterization of pH-responsive TPNBS.
• To explore the potential of these TPNBS as effective in vivo nanotheranostic agents within acidic tumor microenvironments.

Main Methods:

• Summarizing recent developments in the field of pH-responsive TPNBS.
• Characterizing the design and preparation of these nanobiosensors.
• Evaluating their performance as in vivo nanotheranostic agents.

Main Results:

• pH sensitivity of TPNBS facilitates tumor-specific accumulation, improved tumor penetration, and enhanced cellular uptake.
• This pH responsiveness enables theranostic activation, leading to improved bioimaging signals and controlled therapeutic agent release.
• TPNBS demonstrate significant potential for efficient in vivo nanotheranostics in acidic cancer environments.

Conclusions:

• pH-responsive TPNBS are highly effective nanocarriers for cancer theranostics.
• Their design and properties are optimized for the acidic tumor microenvironment, improving therapeutic outcomes.
• Further development of TPNBS holds promise for advanced cancer diagnosis and treatment strategies.