Unrevealing the anti-microbial potential of engineered CXCL17-expressing lactic acid bacteria

CXCL17, previously referred to as DMC and VCC-1, is the most recent of the described chemokines. CXCL17 is predominantly expressed in mucosal tissues, such as the respiratory and gastrointestinal tracts, as well as in the pancreas and lungs, which suggests a role in mucosal immunity. Its biological effects are currently being revealed, where data from in silico profiling and comparisons to other proteins also suggest antimicrobial properties.

The effect of CXCL17-producing lactic acid bacteria in counteracting bacterial infections of the lungs will be tested through in vitro studies and in mouse models, where the lung microbiome is investigated before and after inhalation of relevant lung.

Antibiogram test done with antibiotics and chemokine-producing lactic acid bacteria.

Antibiogram test done with antibiotics and chemokine-producing lactic acid bacteria.

This project is part of the Marie Skłodowska-Curie Actions (MSCA)-doctoral network program "B-ACTIVE", an EU-funded collaboration between the universities of Leuven, Copenhagen, Graz, Ljubljana, Uppsala and several industrial partners located in Copenhagen, Uppsala, Graz, Cambridge and Paris (see https://b-active-dn.eu). PhD student Giacomo Veronese is the associated doctoral student to this project.

PhD Student Giacomo Veronese working in the lab

PhD Student Giacomo Veronese working in the lab

Related published research

  1. Borja Ocón et al., “A Lymphocyte Chemoaffinity Axis for Lung, Non-Intestinal Mucosae and CNS,” Nature 635, no. 8039 (November 2024): 736–45, https://doi.org/10.1038/s41586-024-08043-2
  2. Nazli Alizadeh-Tabrizi, Stefan Hall, and Christian Lehmann, “Intravital Imaging of Pulmonary Immune Response in Inflammation and Infection,” Frontiers in Cell and Developmental Biology 8 (January 15, 2021): 620471, https://doi.org/10.3389/fcell.2020.620471
  3. Antje Moeller et al., “The Bleomycin Animal Model: A Useful Tool to Investigate Treatment Options for Idiopathic Pulmonary Fibrosis?,” The International Journal of Biochemistry & Cell Biology 40, no. 3 (2008): 362–82, https://doi.org/10.1016/j.biocel.2007.08.011
  4. Shiyu Xiao, Wenhui Xie, and Liya Zhou, “Mucosal Chemokine CXCL17: What Is Known and Not Known,” Scandinavian Journal of Immunology 93, no. 2 (February 2021): e12965, https://doi.org/10.1111/sji.12965.
  5. Teodora Nicola et al., “A Lactobacilli-Based Inhaled Live Biotherapeutic Product Attenuates Pulmonary Neutrophilic Inflammation,” Nature Communications 15, no. 1 (August 19, 2024): 7113, https://doi.org/10.1038/s41467-024-51169-0

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