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Glucocorticoids as Immunosuppressants

*Glucocorticoidea*

For medical students2 min readUpdated 2026-10-10

Glucocorticoids were historically the first agents used for immunosuppression in organ transplantation. Today, they are successfully employed to prevent graft rejection and treat autoimmune pathologies, with prednisolone serving as the standard reference drug of the group.

Reference drugPrednisolone — the main representative of the group

Molecular targetIntracellular cytosolic receptors

Main objectiveSuppression of the immune response and inflammation

Clinical scopeOrgan transplantation and autoimmunity

Clinical History and Role

Glucocorticoids entered medical practice as the very first pharmacological agents capable of effectively suppressing the immune system during organ transplantation. To this day, their therapeutic significance remains high: they continue to be essential in combating autoimmune diseases and reliably protect patients from donor graft rejection. Prednisolone is considered the classic and reference drug within this group.

Cellular Uptake of Glucocorticoids

The molecular pathway of drugs in this group follows a strict sequence of biological steps:

Unimpeded diffusion across the cell membrane into the target cell.
Specific binding to a designated intracellular receptor located in the cytosol.
Translocation of the formed active hormone-receptor complex directly into the cell nucleus.
Direct interaction with gene promoters, which triggers the regulation of DNA transcription processes.

Mechanism of Immunosuppressive Action

By acting on the cellular genetic apparatus, these drugs successfully suppress unwanted immune responses. Key mechanisms include:

Inhibition of the transcription of genes responsible for encoding major histocompatibility complex (MHC) proteins.
Effective suppression of the synthesis of various pro-inflammatory cytokines.
Marked inhibition of active T-lymphocyte proliferation.

Frequently asked questions

Which specific pro-inflammatory cytokines do glucocorticoids suppress?

Glucocorticoids suppress the synthesis and transcription of key pro-inflammatory cytokines that play a crucial role in the development of inflammatory and immune responses.

Interleukin-1 (Interleukin-1) — inhibition of gene transcription and production.
Interleukin-2 (Interleukin-2) — suppression of gene transcription and production.
Interleukin-4 (Interleukin-4) — inhibition of production.
Interleukin-6 (Interleukin-6) — suppression of gene transcription.
Interleukin-8 (Interleukin-8) — inhibition of gene transcription.
Tumor necrosis factor (Tumor necrosis factor) — suppression of gene transcription and production.

Which drug is considered the reference standard among immunosuppressive glucocorticoids?

Prednisolone is the reference representative of this pharmacological group.

Where were glucocorticoids first historically used for immunosuppression?

These drugs were historically the first used during organ transplantation procedures.

What is the primary intracellular molecular target of the hormone?

The hormone binds to a specific intracellular cytosolic receptor, after which the complex translocates into the cell nucleus.

Go deeper

Historical context of the development of immunosuppressive therapy
Detailed analysis of the structure of the major histocompatibility complex (MHC)
The role of pro-inflammatory cytokines in the development of the immune response
Mechanisms of T-lymphocyte proliferation and their blockade
Specific features of DNA transcription regulation under the influence of hormones