Marta Pokrywczynska, Arkadiusz Jundzill, Karolina Warda, Marta Rasmus, Lukasz Buchholz and Tomasz Drewa
Nicolaus Copernicus University, Poland
Nicolaus Copernicus Hospital, Poland
Scientific Tracks Abstracts: J Tissue Sci Eng
Background: Development of an effective method of urinary bladder regeneration is associated with identifying the pathways
that play a key role in the regeneration process. Until now, the regeneration pathways in tissue engineered urinary bladder have
not been determined.
Aim: The aim of this study was to analyze regeneration pathways in the tissue engineered urinary bladder.
Method: The study was performed on 40 Wistar rats. Adipose tissue was harvested from 20 rats and adipose derived stem cells
(ADSCs) were isolated. After hemicystectomy, bladders were augmented with bladder acellular matrix (BAM) (n=20) or BAM
seeded with ADSCs (n=20). 10 rats were sacrificed in each group after three and six months. The total RNA was isolated from
reconstructed bladder wall and then quantity, purity and integrity of RNA were evaluated. Gene expression was evaluated
using microarray and GeneSpring software.
Results: Isolated RNA revealed good purity, concentration and RNA integrity number above seven in all samples. Gene
expression analysis indicated 711 differentially expressed transcripts in bladders reconstructed with BAM seeded with
ADSCs compared to bladders reconstructed with unseeded BAM, six months after the reconstruction and 8 241 differentially
expressed genes, three months after the reconstruction. A large number of differentially expressed genes were involved in a lot
of pathways, including: B and T cell receptor signaling pathway, IL-3, IL-6, IL-2 and IL-5 signaling pathways, inflammatory
response pathway, GPCR signaling pathway and Wnt signaling pathway.
Conclusion: Microarray gene expression analysis allows to create a regeneration patterns in tissue engineered urinary bladder.
The research was supported by a grant from the National Science Center, decision no. DEC-2012/07/D/NZ1/00854
Marta Pokrywczynska is the Head of the Department of Regenerative Medicine at Nicolaus Copernicus University (NCU) (Bydgoszcz, Poland). She has completed her MSc and PhD in Medical Biotechnology from the NCU. Her research area focuses on “development of new tissue engineering and regenerative medicine technologies”.
Journal of Tissue Science and Engineering received 715 citations as per Google Scholar report