logo

Research Goal:

The Ramsey Lab is focused on elucidating the biophysical mechanisms underlying the ability of the RIG-I-like receptors (RLRs) to sense cytosolic double-stranded RNA (dsRNA) and initiate an innate immune response by studying this family of receptors from a variety of species including avian species and scavengers such as vulture and hyenas. This approach seeks to understand the fundamental biology of RLR function across species as a way to inform on future therapeutic design for humans and beyond.

Why should we study RLRs?

RNA viruses comprise some of the most significant health threats across the world, and the innate immune system constitutes the body's first line of defense to invasions by these pathogens. The RIG-I-like receptors (RLRs) are a family of pattern recognition receptors which are responsible for sensing cytosolic double-stranded RNA (dsRNA), a highlight of viral infection, and initiating an innate immune response. Proper function of RLRs is required for a robust initial defense against viral infection. Furthermore, RLRs are a common target for vaccine adjuvant design and are even emerging as potential targets for therapeutics which sensitize certain tumors to novel immune checkpoint inhibitors. It is critical that we understand the precise biophysical mechanisms underlying RLR function in order to inform the design of therapeutics which target RLRs.

What do we know about how RLRs function?

RLRs are multi-domain proteins regulated by inter-domain interactions and large-scale conformational changes. In the absence of cytosolic dsRNA, RIG-I and MDA5 exist in autoinhibited states wherein intramolecular interactions between the helicase and caspase activation and recruitment domains (CARD) block subsequent interactions. This autoinhibition is released upon dsRNA binding to the C-terminal and helicase domains allowing downstream signaling and the induction of inflammation.

RLR Signaling

signaling

The RIG-I-Like Receptors

The RIG-I-Like Receptors
river in mountains

Undergraduate Admissions

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer felis neque, elementum sed lectus id, sodales tempus mi.

Learn more

river in mountains

Majors and Minors

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer felis neque felis neque felis neque, elementum sed lectus id, sodales tempus mi.

Learn more

river in mountains

Departments and Programs

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer felis neque, elementum sed lectus id, sodales tempus mi. Integer felis neque, elementum sed lectus id, sodales tempus mi.
 
Learn more

12:1

Student to faculty ratio for this upcoming semester

$500,000

In grant funding for this fiscal year

Forty

Degrees and programs available

Recent Headlines