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Tissue Transplantation

Tissue Transplantation

Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...

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Related Experiment Video

Updated: Sep 13, 2025

Procurement and Decellularization of Rat Hindlimbs Using an Ex Vivo Perfusion-Based Bioreactor for Vascularized Composite Allotransplantation

Procurement and Decellularization of Rat Hindlimbs Using an Ex Vivo Perfusion-Based Bioreactor for Vascularized Composite Allotransplantation

Published on: June 9, 2022

Cellular senescence-from solid organs to vascularized composite allotransplants.

Leonard Knoedler^1,2, Andreas Schroeter^3,4, Jasper Iske^5,6

¹Department of Oral and Maxillofacial Surgery, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berli, Augustenburger Platz 1, 13353, Berlin, Germany. leonard.knoedler@charite.de.

|July 28, 2025

Summary

Cellular senescence, a state of cell cycle arrest, may impact vascularized composite allotransplantation (VCA) outcomes. Understanding senescence in VCA could lead to new therapies for improved graft survival.

Keywords:

Immune aging Immunosenescence Reconstructive surgery Senescence Senotherapeutics Transplant VCA Vascularized composite allotransplantation

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Area of Science:

Immunology
Regenerative Medicine
Transplantation Science

Background:

Vascularized composite allotransplantation (VCA) restores form and function in severe tissue defects.
Cellular senescence, a state of irreversible cell cycle arrest, is implicated in solid organ transplantation (SOT) rejection.
Senescent cells can increase transplant immunogenicity, potentially affecting graft longevity.

Purpose of the Study:

To review the role of cellular senescence in solid organ transplantation.
To explore the potential impact of cellular senescence on vascularized composite allotransplantation outcomes.
To inform the development of targeted therapies for VCA.

Main Methods:

Literature review of cellular senescence in SOT.
Analysis of potential senescence mechanisms in VCA.
Synthesis of current knowledge to identify research gaps.

Main Results:

Cellular senescence is increasingly recognized for its role in SOT immunogenicity and rejection.
Evidence linking senescence to VCA outcomes is currently limited.
Senescent cells' pro-inflammatory secretome may negatively influence VCA graft acceptance.

Conclusions:

Cellular senescence is a critical factor in SOT, influencing graft survival.
Further research is needed to elucidate the specific role of senescence in VCA.
Targeting senescence pathways may offer novel therapeutic strategies for VCA.