Related Experiment Video
Updated: May 31, 2026

In Vitro and In Vivo Assessment of T, B and Myeloid Cells Suppressive Activity and Humoral Responses from Transplant Recipients
Published on: August 12, 2017
Immunobiology of transplantation: impact on targets for large and small molecules
A M Azimzadeh1, J R Lees, Y Ding
1Department of Surgery, University of Maryland School of Medicine, Baltimore, Maryland, USA.
Abstract:
Organ transplantation is the preferred method of treatment for many forms of end-stage organ failure. However, immunosuppressive drugs that are used to avoid rejection can result in numerous undesirable effects (infection, malignancy, hypertension, diabetes, and accelerated arteriosclerosis). Moreover, they are not effective at preventing chronic rejection resulting in late graft loss. This review summarizes the fundamental concepts underlying the rejection of solid-organ allografts with the aim of highlighting potential new targets for therapeutics. Future improvement will depend on new therapeutic moieties, including biologics, to target various pathways of both the innate and adaptive arms of immunity. Results from some of the most recent clinical trials in transplantation and emerging new therapies are also discussed.
Insights
Organ transplantation faces challenges from immunosuppressive drugs causing side effects and chronic rejection. New biologic therapies targeting immune pathways offer hope for improved graft survival and reduced complications.
Area of Science:
- Immunology
- Transplantation Medicine
- Drug Development
Background:
- Organ transplantation is a vital treatment for end-stage organ failure.
- Current immunosuppressive drugs have significant side effects, including infection, malignancy, and cardiovascular issues.
- These drugs are often ineffective against chronic rejection, leading to late graft loss.
Purpose of the Study:
- To review the fundamental mechanisms of solid-organ allograft rejection.
- To identify novel therapeutic targets for preventing organ transplant rejection.
- To discuss recent clinical trial results and emerging therapies in transplantation.
Main Methods:
- Literature review of fundamental concepts in allograft rejection.
- Analysis of current immunosuppressive drug limitations.
- Exploration of new therapeutic strategies, including biologics.
- Discussion of recent clinical trial data and novel therapies.
Main Results:
- Standard immunosuppression carries risks of infection, malignancy, and metabolic disorders.
- Chronic rejection remains a major cause of long-term graft failure.
- Targeting innate and adaptive immunity pathways presents promising therapeutic avenues.
- Emerging biologics and therapies show potential for improved outcomes.
Conclusions:
- Advancements in organ transplantation require novel therapeutic approaches beyond current immunosuppression.
- Future strategies will likely involve biologics targeting specific immune pathways to combat rejection.
- Continued research into new therapies is crucial for enhancing long-term graft survival and patient well-being.
Related Concept Videos
Cell-mediated Immune Responses
Tissue Transplantation
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
Cytotoxic T Cells-mediated Immune Response
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase

