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Multishell Colloidosome Platform with Sequential Gastrointestinal Resistance for On-Demand Probiotic Delivery.

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This summary is machine-generated.

This study introduces a novel multishell colloidosome platform for enhanced oral probiotic delivery. The platform protects probiotics through the gastrointestinal tract, significantly improving their viability and therapeutic efficacy for conditions like colitis.

Keywords:
biomimetic mineralizationcolloidosomescolon deliverymicrofluidicsprobiotics

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Area of Science:

  • Biomaterials Engineering
  • Microbiology
  • Gastroenterology

Background:

  • Oral probiotics offer therapeutic potential by modulating gut microbiota.
  • Current limitations include low probiotic viability and delivery efficiency to the colon.
  • This hinders their clinical application and effectiveness.

Purpose of the Study:

  • To develop a novel delivery platform for enhanced oral probiotic delivery.
  • To improve probiotic viability and targeted release in the colon.
  • To investigate the therapeutic potential of this platform for intestinal diseases.

Main Methods:

  • Fabrication of a multishell colloidosome (MSC) platform using biomimetic mineralization and microfluidic technology.
  • Encapsulation of probiotics within the MSCs.
  • Assessment of probiotic viability under simulated gastrointestinal conditions (acidity, bile salts, enzymes).
  • In vitro and in vivo studies to evaluate colonic colonization and therapeutic effects in a colitis mouse model.

Main Results:

  • Probiotic viability increased 280-fold during preservation within MSCs compared to free bacteria.
  • Encapsulated probiotics maintained 61% viability in harsh gastrointestinal conditions, while free bacteria showed 0% viability.
  • MSCs demonstrated targeted probiotic release in the colon, enhancing colonic colonization.
  • Improved intestinal barrier integrity and gut flora balance were observed.
  • Significant therapeutic improvement in colitis was achieved in mice.

Conclusions:

  • The MSC platform offers a promising strategy for on-demand, high-efficiency oral probiotic delivery.
  • This approach overcomes the limitations of low viability and poor delivery of conventional probiotic therapies.
  • The MSC platform has the potential to enhance the efficacy of probiotics for various gastrointestinal conditions.