It's beginning to look like a strange new RNA world exists! Observations by our lab and others have shown that non-coding RNAs (ncRNAs) play an under-appreciated role in controlling gene expression in human cells. Studies have found that in human cells both long and short ncRNAs can epigenetically regulate gene expression and transcriptional manner. These findings suggest that the once held dogma that RNA functions as an information transfer medium between DNA and protein may be incomplete. Evidence suggests that some RNAs may also be governing particular protein and DNA interactions, such as epigenetic states, that may not only guide natural selective states in the cell but also prove to be exceptionally valuable and therapeutically relevant molecules to target.
Our lab is interested in determining how ncRNAs regulate gene expression and dictate epigenetic states and to what extent this mechanism is operative in shaping the content and architecture of the human genome. Specifically we wish to apply this knowledge to transcriptionally control HIV-1, cancer, and diseases such as Cystic Fibrosis.
Ongoing projects in the Morris lab include: mechanistic determination of small and long ncRNA mediated transcriptional gene silencing (TGS) and epigenetic gene regulation in human cells; transcriptional gene silencing (TGS) of HIV-1 and several oncogenes involved in human cell cancers; transcriptional gene activation (TGA) /de-repression whereby we utilize ncRNAs or antisense oligonucleotides targeted to endogenous regulatory long ncRNAs; and nucleic acid based genetic therapy targeted approaches to delivering regulatory ncRNAs to cells to treat different diseases. Current methods involve developing receptor targeted aptamers and mobilization competent lentiviral vectors to parasitize HIV-1.
|Model of TGSilencing||Model of TGActivation|