Implantable living materials autonomously deliver therapeutics using contained engineered bacteria
Summary
Microbes are increasingly used as living therapeutics, yet their uncontrolled dissemination in the body has remained a clinical roadblock. Physical containment remains largely unattainable owing to eventual bacteria escape. In this work, we present an implantable material that encapsulates and confines bacteria, wherein synthetically engineered microbes produce therapeutic payloads from within. We developed a hydrogel scaffold with dual mechanical features: high stiffness to regulate bacte
Content
# Implantable living materials autonomously deliver therapeutics using contained engineered bacteria
*Published: 2026 May 14*
Microbes are increasingly used as living therapeutics, yet their uncontrolled
dissemination in the body has remained a clinical roadblock. Physical
containment remains largely unattainable owing to eventual bacteria escape. In
this work, we present an implantable material that encapsulates and confines
bacteria, wherein synthetically engineered microbes produce therapeutic payloads
from within. We developed a hydrogel scaffold with dual mechanical features:
high stiffness to regulate bacterial proliferation and high toughness to resist
material fracture under physiological stress. This design achieved complete
bacterial containment for 6 months and withstood multiple forms of mechanical
loading that otherwise caused catastrophic material failure. By genetically
engineering embedded bacteria, we endowed the material with environmental
sensing and on-demand therapeutic release capabilities and demonstrated
autonomous treatment in a murine prosthetic joint infection model.
DOI: 10.1126/science.aec2071