Urothelium Tissue Engineering Using Biopsies From Transurethral Resection

Status Not yet recruiting

Clinical Trial Summary

Different clinical conditions can require urinary bladder augmentation or replacement. Tissue engineered bladder has been clinically evaluated but is not recommended due to diverse side effects. Thus, there is a real interest for the development of regenerative approach with innovative scaffolds and cell transplantation.

The investigators propose the use of urothelial cells obtained by Trans-Urethral Resection of Prostate or bladder (TURP) to obtain a tissue engineered urothelium in association with different scaffolds.

Clinical Trial Description

Bladder biopsies will be obtained during cystoscopy, conserved in culture medium (DMEM®), digested by dispase and sowed on collagen-coated culture support. Keratinocyte Serum Free Medium (KSFM) will be used for proliferation. Microscopy, immunohistochemistry, RNA extraction, Reverse Transcription and quantitative Polymerase Chain Reaction (RT-qPCR) will be performed during passages. Cell culture conditions will be optimized to improve proliferation and avoid loss of differentiation. The investigators will develop scaffolds based on sodium alginate hydrogels, followed by freeze-drying to generate porous sponges (at -20°C and -80°C). Cultured cells will be associated to these original scaffolds and to other scaffolds, for example alginate hydrogels or Collagen Cell Carrier (CCC), cultivated for 28 days and analyzed. Histological and immunohistological appearance of cellularized scaffolds will be compared to assess the effectiveness of each scaffold for tissue engineering in urothelium.

Cellularized scaffolds will be studied in vitro (Transepithelial Electrical Resistance, impermeability, ability to be stitched, resistance to urine) and in vivo in ectopic location (subcutaneous location in Nude mice) or in orthotopic location (bladder augmentation in small animal). ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03698721
Study type	Observational
Source	Central Hospital, Nancy, France
Contact	Nicolas Berte, Dr
Phone	00333673004195
Email	n.berte@chru-nancy.fr
Status	Not yet recruiting
Phase
Start date	October 2018
Completion date	October 2026

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Urothelium Tissue Engineering Using Biopsies From Transurethral Resection of Prostate — IMOPU

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms