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Spatial Control of Probiotic Bacteria in the Gastrointestinal Tract Assisted by Magnetic Particles
Author(s) -
Buss Marjorie T.,
Ramesh Pradeep,
English Max Atticus,
LeeGosselin Audrey,
Shapiro Mikhail G.
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202007473
Subject(s) - probiotic , gastrointestinal tract , microscale chemistry , bacteria , biology , magnetic nanoparticles , microbiology and biotechnology , antibiotics , magnetic field , materials science , nanotechnology , nanoparticle , physics , biochemistry , genetics , mathematics education , mathematics , quantum mechanics
Engineered probiotics have the potential to diagnose and treat a variety of gastrointestinal (GI) diseases. However, these exogenous bacterial agents have limited ability to effectively colonize specific regions of the GI tract due to a lack of external control over their localization and persistence. Magnetic fields are well suited to providing such control, since they freely penetrate biological tissues. However, they are difficult to apply with sufficient strength to directly manipulate magnetically labeled cells in deep tissue such as the GI tract. Here, it is demonstrated that a composite biomagnetic material consisting of microscale magnetic particles and probiotic bacteria, when orally administered and combined with an externally applied magnetic field, enables the trapping and retention of probiotic bacteria within the GI tract of mice. This technology improves the ability of these probiotic agents to accumulate at specific locations and stably colonize without antibiotic treatment. By enhancing the ability of GI‐targeted probiotics to be at the right place at the right time, cellular localization assisted by magnetic particles (CLAMP) adds external physical control to an important emerging class of microbial theranostics.