Bioengineered Microrobot for Targeted and Autonomous Eradication of Helicobacter pylori

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Microbiology

Background:

• Helicobacter pylori (H. pylori) infection is a significant challenge in gastric disease treatment.
• Conventional antibiotic therapies face limitations including poor gastric retention, lack of specificity, and increasing bacterial resistance.
• There is a critical need for innovative therapeutic strategies to overcome these challenges.

Purpose of the Study:

• To develop and evaluate a novel bioengineered robotic system for targeted and efficient H. pylori eradication.
• To address the limitations of conventional H. pylori therapies through advanced nanotechnology and bioengineering.
• To investigate the system's efficacy in vitro and in vivo for H. pylori clearance and mitigation of associated inflammation.

Main Methods:

• A multi-functional micro-robot system was engineered, combining platinum nanozymes, calcium carbonate, chitosan, gastric cell membranes, and pronase.
• The system utilizes autonomous motility propelled by carbon dioxide generation upon exposure to gastric acid.
• In vitro and in vivo studies were conducted to assess antibacterial activity, biocompatibility, and therapeutic effects on H. pylori infection.

Main Results:

• The bioengineered micro-robots demonstrated enhanced gastric retention, precision targeting, and efficient H. pylori eradication.
• Pronase facilitated mucus barrier penetration, while platinum nanozymes ensured deep bacterial clearance.
• The system showed superior antibacterial activity, excellent biocompatibility, and effectively mitigated H. pylori-induced inflammation.
• Intestinal microbiota balance was preserved during treatment.

Conclusions:

• The novel bioengineered robotic system represents a paradigm shift in H. pylori therapy.
• This technology offers a precise, efficient, and resistance-mitigating alternative to conventional treatments.
• The system's multi-modal mechanism and autonomous propulsion overcome key limitations of current H. pylori eradication strategies.