Microchimerism, PERV and Xenotransplantation

Microchimerism is the presence of cells in an individual that have originated from a genetically distinct individual. The most common form of microchimerism is fetomaternal microchimerism, i.e., cells from a fetus pass through the placenta and establish cell lineages within the mother. Microchimeris...

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Main Author: Joachim Denner
Format: Article
Language:English
Published: MDPI AG 2023-01-01
Series:Viruses
Subjects:
Online Access:https://www.mdpi.com/1999-4915/15/1/190
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author Joachim Denner
author_facet Joachim Denner
author_sort Joachim Denner
collection DOAJ
description Microchimerism is the presence of cells in an individual that have originated from a genetically distinct individual. The most common form of microchimerism is fetomaternal microchimerism, i.e., cells from a fetus pass through the placenta and establish cell lineages within the mother. Microchimerism was also described after the transplantation of human organs in human recipients. Consequently, microchimerism may also be expected in xenotransplantation using pig cells or organs. Indeed, microchimerism was described in patients after xenotransplantations as well as in non-human primates after the transplantation of pig organs. Here, for the first time, a comprehensive review of microchimerism in xenotransplantation is given. Since pig cells contain porcine endogenous retroviruses (PERVs) in their genome, the detection of proviral DNA in transplant recipients may be misinterpreted as an infection of the recipient with PERV. To prevent this, methods discriminating between infection and microchimerism are described. This knowledge will be important for the interpretation of screening results in forthcoming human xenotransplantations.
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spelling doaj.art-21c5170473384d7ebd8c5bd4159f6d912023-12-01T01:12:27ZengMDPI AGViruses1999-49152023-01-0115119010.3390/v15010190Microchimerism, PERV and XenotransplantationJoachim Denner0Institute of Virology, Free University Berlin, 14163 Berlin, GermanyMicrochimerism is the presence of cells in an individual that have originated from a genetically distinct individual. The most common form of microchimerism is fetomaternal microchimerism, i.e., cells from a fetus pass through the placenta and establish cell lineages within the mother. Microchimerism was also described after the transplantation of human organs in human recipients. Consequently, microchimerism may also be expected in xenotransplantation using pig cells or organs. Indeed, microchimerism was described in patients after xenotransplantations as well as in non-human primates after the transplantation of pig organs. Here, for the first time, a comprehensive review of microchimerism in xenotransplantation is given. Since pig cells contain porcine endogenous retroviruses (PERVs) in their genome, the detection of proviral DNA in transplant recipients may be misinterpreted as an infection of the recipient with PERV. To prevent this, methods discriminating between infection and microchimerism are described. This knowledge will be important for the interpretation of screening results in forthcoming human xenotransplantations.https://www.mdpi.com/1999-4915/15/1/190xenotransplanationmicrochimerismporcine endogenous retrovirusesdetection methods
spellingShingle Joachim Denner
Microchimerism, PERV and Xenotransplantation
Viruses
xenotransplanation
microchimerism
porcine endogenous retroviruses
detection methods
title Microchimerism, PERV and Xenotransplantation
title_full Microchimerism, PERV and Xenotransplantation
title_fullStr Microchimerism, PERV and Xenotransplantation
title_full_unstemmed Microchimerism, PERV and Xenotransplantation
title_short Microchimerism, PERV and Xenotransplantation
title_sort microchimerism perv and xenotransplantation
topic xenotransplanation
microchimerism
porcine endogenous retroviruses
detection methods
url https://www.mdpi.com/1999-4915/15/1/190
work_keys_str_mv AT joachimdenner microchimerismpervandxenotransplantation