• Adenosine ribonucleoside molecule. Chemical structure and molecule model of nucleoside.
  • Downloaded Single strand ribonucleic acid molecules.
  • Adenosine ribonucleoside molecule. Chemical structure and molecule model of nucleoside.
  • Downloaded Single strand ribonucleic acid molecules.
  • Adenosine ribonucleoside molecule. Chemical structure and molecule model of nucleoside.
  • Downloaded Single strand ribonucleic acid molecules.

O'Reilly Lab

Genetic Medicines: Transforming the Future of Rare Diseases

About Our Lab

At the O’Reilly Lab, our vision is to transform the lives of patients and families affected by rare and ultra-rare diseases by developing innovative genetic medicines. Driven by compassion and scientific excellence, we aim to advance oligonucleotide therapeutics, such as ASOs, siRNAs, and CRISPR-based technologies, to address urgent unmet medical needs. By combining cutting-edge research with a patient-centered approach, we strive to expand treatment options, deepen our understanding of genetic medicine, and make a meaningful impact on the rare disease community.

Therapeutic Platforms:

We leverage three main classes of oligonucleotide therapeutics:

  • Antisense Oligonucleotides (ASO): Bind to RNA to modulate splicing or degrade mRNA, preventing the production of harmful proteins.
  • Short interfering RNA (siRNA)s: Silence target genes by promoting degradation of specific mRNA which prevents the production of harmful proteins.
  • CRISPR: Enables precise editing of disease-causing genes at the DNA level.

Our Approach

Our team utilizes expertise in oligonucleotide synthesis, biochemical assays, and in vivo pharmacology to translate discoveries into clinical applications. We address challenges like targeted delivery and cellular uptake and improve our understanding of oligonucleotide interactions with biological systems, including binding to RNA or DNA, modulation of gene expression, intracellular trafficking, and engagement with proteins and immune pathways to optimize efficacy and safety. Through collaboration with academic and clinical partners, we accelerate research and advance therapeutic solutions for rare diseases.

Research Areas

Novel Chemical Modifications

Altering the natural structure of RNA and DNA has been essential for improving the stability and efficacy of oligonucleotide therapeutics. Innovations such as C4 and PEG linkers have shown promise in preclinical studies, inspiring us to expand the chemical toolbox for enhanced therapeutic performance and mechanistic insight.

Adenosine ribonucleoside molecule. Chemical structure and molecule model of nucleoside.

Oligonucleotide Chemical Biology

Oligonucleotides interact with various cellular proteins and can trigger immune responses, affecting their efficacy, delivery, and safety. Using structural probes, we aim to unravel these complex interactions and inform the rational design of next-generation therapies.

Chemistry lab icon set. Included icons as Chemical, formula, Medical analysis, Laboratory test flask.

Rare Disease Therapeutics

We design oligonucleotides to address a broad spectrum of rare genetic disorders, including repeat expansion diseases such as Huntington’s disease, where targeting CAG repeats can delay onset, and non-repeat-associated conditions. Our research encompasses the development of oligonucleotide therapies for both neurological and non-neurological diseases, including disorders that affect the brain, heart, and other organs, to expand treatment options for patients with unmet medical needs.

Rare Disease Day Background. Colorful awareness ribbon with group of people with rare diseases.

Tissue-Specific Delivery

While GalNAc conjugation has revolutionized liver-targeted oligonucleotide delivery, targeting other tissues remains a significant challenge. We are developing novel ligand conjugates—including sugars, antibodies, and peptides—to deliver therapeutics precisely beyond the liver.

Visual scheme of the structure of man and human organs.

Publications

Di-valent siRNA-mediated silencing of MSH3 blocks somatic repeat expansion in mouse models of Huntington's disease

O'Reilly, D., Belgrad, J., Ferguson, C., Summers, A., Sapp, E., McHugh, C., Mathews, E., Boudi, A., Buchwald, J., Ly, S., Moreno, D., Furgal, R., Luu, E., Kennedy, Z., Hariharan, V., Monopoli, K., Yang, X. W., Carroll, J., DiFiglia, M. & Aronin, N. & 1 others, Khvorova, A., Jun 7 2023, In: Molecular Therapy. 31, 6, p. 1661-1674 14 p.

Research output: Contribution to journalArticlepeer-review

Join our team

If you are interested in joining the O’Reilly Lab at UTMB to work on cutting-edge oligonucleotide therapeutics for rare and ultra-rare diseases, we welcome highly motivated and enthusiastic volunteers and recruits with a willingness to learn.