decellularization-recellularization-methodology-for-human-saphenous

Decellularization and Recellularization Methodology for Human Saphenous Veins

Vascular conduits used during most vascular surgeries are allogeneic or synthetic grafts that often lead to complications caused by immunosuppression and ...

isolation-and-decellularization-of-a-whole-porcine-pancreas

Isolation and Decellularization of a Whole Porcine Pancreas

Tissue engineering of the whole pancreas can improve current treatments for diabetes mellitus. The ultimate goal is to tissue engineer pancreas from an ...

University of Gothenburg

Extrahepatic portal vein obstruction can have severe health consequences. Variceal bleeding associated with this disorder causes upper gastrointestinal bleeding, leading to substantial morbidity and mortality. We report the clinical transplantation of a deceased donor iliac vein graft repopulated with recipient autologous stem cells in a patient with extrahepatic portal vein obstruction.

Transplantation of an allogeneic vein bioengineered with autologous stem cells: a proof-of-concept study.

Hepatic stellate cells (HSCs) are liver-resident mesenchymal cells involved in essential processes in the liver. However, knowledge concerning these cells in human livers is limited because of the lack of a simple isolation method.

TEMPORARY REMOVAL: CD271 identifies functional human hepatic stellate cells, which localize in peri-sinusoidal and portal areas in liver after partial hepatectomy.

Vascular diseases are increasing health problems affecting > 25 million individuals in westernized societies. Such patients could benefit from transplantation of tissue-engineered vascular grafts using autologous cells. One challenge that has limited this development is the need for cell isolation, and risks associated with ex vivo expanded stem cells. Here we demonstrate a novel approach to generate transplantable vascular grafts using decellularized allogeneic vascular scaffolds, repopulated with peripheral whole blood (PWB) in vitro in a bioreactor. Circulating, VEGFR-2 +/CD45 + and a smaller fraction of VEGFR-2 +/CD14 + cells contributed to repopulation of the graft. SEM micrographs showed flat cells on the luminal surface of the grafts consistent with endothelial cells. For clinical validation, two autologous PWB tissue-engineered vein conduits were prepared and successfully used for by-pass procedures in two pediatric patients. These results provide a proof of principle for the generation of transplantable vascular grafts using a simple autologous blood sample, making it clinically feasible globally. 

Vijay Kumar Kuna

Department of Surgery,
Institute of Clinical Sciences,
Sahlgrenska Academy,
Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy

University of Gothenburg

Decellularization and Recellularization Methodology for Human Saphenous Veins

Isolation and Decellularization of a Whole Porcine Pancreas

Vijay Kumar Kuna

.css-o250i3{font-size:18px;font-family:Open Sans,sans-serif;line-height:21.6px;}Department of Surgery,Institute of Clinical Sciences,Sahlgrenska Academy,Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy

University of Gothenburg

Decellularization and Recellularization Methodology for Human Saphenous Veins

Isolation and Decellularization of a Whole Porcine Pancreas

Department of Surgery,
Institute of Clinical Sciences,
Sahlgrenska Academy,
Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy