Nanotherapy that prevents trained immunity and promotes tolerance

Impaired Humoral Immunity and Tolerance

Immunometabolic Pathways in BCG-Induced Trained Immunity

The protective effects of the tuberculosis vaccine Bacillus Calmette-Guerin (BCG) on unrelated infections are thought to be mediated by long-term metabolic changes and chromatin remodeling through histone modifications in innate immune cells such as monocytes, a process termed trained immunity. Here, we show that BCG induction of trained immunity in monocytes is accompanied by a strong increase...

Treg: tolerance vs immunity

Regulatory T cells (Treg) are requisite for the prevention of autoimmunity, transplant rejection, and tolerance to therapeutic protein delivery. Dendritic cells (DCs) are crucial for FoxP3+ Treg homeostasis, and their expansion can increase Treg numbers. By contrast, Treg are a hindrance to anti-cancer therapy as they suppress immune responses to tumors. Interestingly, some of the same drugs an...

Does BCG vaccine induced trained immunity provide cross-protection against COVID-19?

During the global COVID-19 pandemic, the rate of mortality and morbidity was fairly low in Pakistan compared to western countries. Bacille Calmette-Guerin (BCG) vaccination provides cross-protection for a broad range of related and unrelated pathogens. This protection is attributed to the recognition of broadly cross-reactive Pathogen-Associated Molecular Pattern (PAMPS) like molecules. We inve...

Type 1 IFN mediates cross-talk between innate and adaptive immunity that abrogates transplantation tolerance.

TLR activation of innate immunity prevents the induction of transplantation tolerance and shortens skin allograft survival in mice treated with costimulation blockade. The mechanism by which TLR signaling mediates this effect has not been clear. We now report that administration of the TLR agonists LPS (TLR4) or polyinosinic:polycytidylic acid (TLR3) to mice treated with costimulation blockade ...