Abstract
Introduction and hypothesis
We investigated the effects of locally administered human multilineage-differentiating stress enduring (Muse) cells, nontumorigenic pluripotent-like endogenous stem cells, on bladder tissues, function, and nociceptive behavior in a chemically induced Hunner-type interstitial cystitis (HIC)-like rat model without immunosuppressant.
Methods
Chemical cystitis was induced by intravesical instillation of 0.2 N hydrochloride (HCl) for 15 min in female F344 rats. SSEA-3+ Muse cells, SSEA-3− non-Muse cells or Hanks' balanced salt solution (HBSS; vehicle) were injected into the anterior and posterior bladder wall at each 1×104 cells/10 μl 6 h after HCl application. The sham group received HBSS without HCl instillation. Urinary frequency was assessed using metabolic cages, cystometrograms, nociceptive behavior, and histological analysis of the bladder and L6 spinal cord.
Results
Increases in urinary frequency and decreases in bladder capacity compared with the sham group were observed in the vehicle and non-Muse groups, but not in the Muse group, at 1 week. Significant increases in nociceptive behavior compared with the sham group and the expression of TNFα in the bladder and c-Fos in the bilateral dorsal horns of L6 spinal cord were also observed in the vehicle and non-Muse groups, whereas these changes were not seen in the Muse group at 1 week. Histological analysis exhibited a higher proportion of injected Muse cells remaining in the urothelial basal layer and lamina propria of the bladder than non-Muse cells until 4 weeks.
Conclusions
Muse cell therapy could be a promising modality for treating HIC.
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Abbreviations
- BC:
-
Bladder capacity
- BM:
-
Bone marrow
- BP:
-
Baseline pressure
- HBSS:
-
Hanks' balanced salt solution
- HCl:
-
Hydrochloride
- HE:
-
Hematoxylin eosin
- HGF:
-
Hepatocyte growth factor
- HIC:
-
Hunner-type interstitial cystitis
- HLA:
-
Human leucocyte antigen
- IC/BPS:
-
Interstitial cystitis/bladder pain syndrome
- MSCs:
-
Mesenchymal stem cells
- Muse:
-
Multilineage-differentiating stress enduring
- MVP:
-
Maximal voiding pressure
- PBS:
-
Phosphate buffered saline
- PE:
-
Polyethylene
- PVR:
-
Post-void residual urine volume
- SD:
-
Standard deviation
- S1PR2:
-
Sphingosine-1-phosphate receptor 2
- SSEA-3:
-
Stage-specific embryonic antigen-3
- TNFα:
-
Tissue necrotic factor α
- TP:
-
Threshold pressure
- UCB:
-
Umbilical cord blood
- VEGF:
-
Vascular endothelial growth factor
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Acknowledgements
The authors would like to thank Chieko Yoshimoto and Atsuko Sasaki, who are research technicians at the department of Urology, Jikei University School of Medicine. This study was supported by JSPS KAKENHI Grant Number JP21K09382.
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A. Furuta: protocol, data collection, manuscript writing; Y. Kuroda: data collection; T. Yamamoto: management data analysis; S. Egawa: manuscript editing; M. Dezawa: manuscript editing; N. Yoshimura: protocol, management data analysis, manuscript editing.
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This study was supported by Life Science Institute, Inc.
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Furuta, A., Kuroda, Y., Yamamoto, T. et al. Effects of human Muse cells on bladder inflammation, overactivity, and nociception in a chemically induced Hunner-type interstitial cystitis-like rat model. Int Urogynecol J 33, 1293–1301 (2022). https://doi.org/10.1007/s00192-022-05166-w
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DOI: https://doi.org/10.1007/s00192-022-05166-w