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Transplant engineering (or allograft engineering) is a variant of genetic organ
engineering Engineering is the use of scientific method, scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad rang ...
which comprises
allograft Allotransplant (''allo-'' meaning "other" in Greek) is the transplantation of cells, tissues, or organs to a recipient from a genetically non-identical donor of the same species. The transplant is called an allograft, allogeneic transplant, o ...
,
autograft Autotransplantation is the transplantation of organs, tissues, or even particular proteins from one part of the body to another in the same person ('' auto-'' meaning "self" in Greek). The autologous tissue (also called autogenous, autogene ...
and
xenograft Xenotransplantation (''xenos-'' from the Greek meaning "foreign" or strange), or heterologous transplant, is the transplantation of living cells, tissues or organs from one species to another. Such cells, tissues or organs are called xenograft ...
engineering. In allograft engineering the graft is substantially modified by altering its genetic composition. The genetic modification can be permanent or transient. The aim of modifying the allograft is usually the mitigation of immunological
graft rejection Transplant rejection occurs when transplanted tissue is rejected by the recipient's immune system, which destroys the transplanted tissue. Transplant rejection can be lessened by determining the molecular similitude between donor and recipient a ...
.


History

Transient genetic allograft engineering has been pioneered by Shaf Keshavjee and Marcelo Cypel at
University Health Network University Health Network (UHN) is a public research and teaching hospital network in Toronto, Ontario, Canada. It is the largest health research organization in Canada and ranks first in Canada for total research funding. It was named Canada's t ...
in
Toronto Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the ancho ...
by adenoviral transduction for
transgenic A transgene is a gene that has been transferred naturally, or by any of a number of genetic engineering techniques, from one organism to another. The introduction of a transgene, in a process known as transgenesis, has the potential to change the ...
expression of the IL-10 gene. Permanent genetic allograft engineering has first been done by Rainer Blasczyk and Constanca Figueiredo at
Hannover Medical School The Hannover Medical SchoolAlthough the English spelling of the city name is "Hanover", this form of the name, using the German spelling of the city name, is used as the English-language name of the school, for example . (german: Medizinische Ho ...
in
Hanover Hanover (; german: Hannover ; nds, Hannober) is the capital and largest city of the German state of Lower Saxony. Its 535,932 (2021) inhabitants make it the 13th-largest city in Germany as well as the fourth-largest city in Northern Germany ...
by
lentiviral ''Lentivirus'' is a genus of retroviruses that cause chronic and deadly diseases characterized by long incubation periods, in humans and other mammalian species. The genus includes the human immunodeficiency virus (HIV), which causes AIDS. Lent ...
transduction for knocking down MHC expression.


References

{{Reflist Genetic engineering Transplantation medicine