Verification of mesenchymal stem cell injection therapy for interstitial cystitis in a rat model

English version

Autoři: Jae-Wook Chung ^aff001; So Young Chun ^aff002; Eun Hye Lee ^aff003; Yun-Sok Ha ^aff001; Jun Nyung Lee ^aff001; Phil Hyun Song ^aff005; Eun Sang Yoo ^aff006; Tae Gyun Kwon ^aff001; Sung Kwang Chung ^aff006; Bum Soo Kim ^aff004
Působiště autorů: Department of Urology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea ^aff001; BioMedical Research Institute, Joint Institute for Regenerative Medicine, Kyungpook National University Hospital, Daegu, Republic of Korea ^aff002; Department of Pathology, School of Medicine, Kyungpook National University, Daegu, South Korea ^aff003; Joint Institute for Regenerative Medicine, Kyungpook National University, Daegu, Republic of Korea ^aff004; Department of Urology, Yeungnam University College of Medicine, Daegu, Republic of Korea ^aff005; Department of Urology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea ^aff006
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pone.0226390

Souhrn

Objective

Interstitial cystitis (IC) is a chronic intractable disease. Recently, the potential application of stem cell (SC) therapy was suggested for IC management. This study aimed to establish an optimal SC source and verify the efficacy and safety of SC injection therapy in an IC rat model.

Design

After IC animal model induction, urine-derived stem cells (USCs), adipose tissue-derived stem cells (ADSCs), bone marrow-derived stem cells (BMSCs) and amniotic fluid-derived stem cells (AFSCs) were injected into the bladder submucosa. The following parameters were analysed: 1) functional improvement of bladder via cystometry, 2) histological changes and 3) inflammatory gene expression and regenerative potential of damaged bladder tissues. Additionally, an optimal method for SC introduction in terms of effective bladder regeneration was analysed.

Results

Intercontraction interval was significantly increased and inflammatory reactions and fibrotic changes were decreased in all of the SC-injected groups than in the control group. PCR analysis revealed that inflammatory gene expression significantly decreased in the USC-treated group than in the other groups. To confirm the optimal SC injection route in the IC rat model, group was divided according to the following criteria: 1) direction of SC injection into the bladder submucosa, 2) injection via tail vein, 3) transurethral instillation. In each analysis, the groups in which SCs were injected into the bladder submucosa showed significantly longer intercontraction interval, better morphologic regeneration and inhibition of bladder inflammatory reaction compared with the other groups.

Conclusion

Regardless of the cell source, human tissue-derived mesenchymal SCs regenerated damaged bladder tissue, promoted functional recovery and inhibited inflammatory cell accumulation in an IC rat model; particularly, USC had the highest inhibitory effect on inflammation. Additionally, direct USC injection into the bladder submucosa was expected to have the best therapeutic effect, which will be an important factor for clinical applications in the future.

Klíčová slova:

Gene expression – Inflammation – Mesenchymal stem cells – Immunohistochemistry techniques – Histology – Bladder – Stem cell therapy – Mast cells

Zdroje

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