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MSCs interaction with the host lung microenvironment: An overlooked aspect?

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Mesenchymal stromal cells (MSCs) are sensitive to their host environment, impacting therapeutic efficacy. Understanding these interactions, particularly in lung diseases like ARDS and CF, can optimize MSC treatments.

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MSCsMesenchymal stromal cellsacute respiratory distress syndromebronchoalveolar lavage fluidcell therapycystic fibrosislungmicroenvironment

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Area of Science:

  • * Regenerative Medicine
  • * Immunology
  • * Cell Biology

Background:

  • * Mesenchymal stromal cells (MSCs) have decades of research, with increasing clinical translation.
  • * The host environment significantly influences MSC phenotype, function, and viability post-administration.
  • * Inflammatory conditions are key factors modulating MSC behavior and therapeutic outcomes.

Purpose of the Study:

  • * To review the interaction between MSCs and the host microenvironment.
  • * To focus on the pulmonary microenvironment in diseases like ARDS and CF.
  • * To explore how host factors affect MSC function and therapeutic potential.

Main Methods:

  • * Review of existing pre-clinical and translational studies.
  • * Analysis of MSC exposure ex vivo to patient samples (serum, BAL fluid).
  • * Examination of MSC sensitivity to host factors like pathogens, cytokines, and ECM.

Main Results:

  • * MSCs exhibit sensitivity to various host factors, including inflammatory cytokines and extracellular matrix properties.
  • * Host environment, especially inflammation, directs MSCs toward specific phenotypes and functions.
  • * Ex vivo exposure to patient samples reveals MSC responsiveness to microenvironmental cues.

Conclusions:

  • * Understanding host-MSC interactions is crucial for optimizing MSC-based therapies.
  • * Identifying patient subgroups likely to respond to MSC treatment is possible.
  • * Priming the host environment can enhance MSC viability and enrich desired phenotypes.