Table 1 Immunomodulatory and antibacterial effects of mesenchymal stem cells against various bacterial infections

From: Revisiting the role of mesenchymal stem cells in tuberculosis and other infectious diseases

Bacteria

Type of MSCs or component used

Effects

References

Streptococcus pneumoniae

Mouse bone-marrow MSCs and MSC-conditioned media

Downregulation of pro-inflammatory cytokines IL-6, TNF-α, Upregulation of anti-inflammatory cytokine IL-10,

Reduced Neutrophil infiltration, Reduced expression of Neutrophil chemoattractants CXCL1 and CXCL2.

[45]

Klebsiella pneumoniae

Mouse bone marrow MSCs.

Reduced expression of TNF-α, decreases in IL-17 and IFN-γ+ T-cell subsets.

[48]

E.coli

Mouse bone marrow MSCs

Equine MSCs and MSC-conditioned media

Decrease in the proinflammatory mediators TNF-α and MIP2, increased expression of IL-10, increased expression of lipocalin2

Antibacterial effects due to cystatin C, lipocalin2, elafin, Cathelicidin

[46, 47]

[50, 51]

Staphylococcus aureus

Equine MSCs and MSC-conditioned media

Antibacterial effects due to cystatin C, lipocalin2, elafin, Cathelicidin

Degradation of biofilms due to cathepsins

Increased phagocytic activity of neutrophils.

[50, 51]

[53, 54]