Ayesha Shafi, PhD
Dr. Shafi’s research is focused on defining the mechanisms and biomarkers of therapeutic resistance in patients with advanced prostate cancer (PCa) with the goal to develop better treatment strategies. PCa is an androgen-dependent disease. Metastatic PCa is treated with androgen deprivation therapy (ADT); although initially effective, tumors recur after 2-3 years and are then termed castration-resistant prostate cancer (CRPC). Intriguingly, CRPC remains largely androgen receptor (AR)-dependent, due to aberrant reactivation of AR through multiple distinct mechanisms that promote cell survival and proliferation. Currently, there is no definitive cure for CRPC. Thus, there is a vital need for the development of new avenues of clinical intervention in PCa to improve patient outcome.
Projects:
Our laboratory encompasses a translational research program that will directly impact the PCa field and advance clinical practice. The ongoing, highly innovative research projects in the laboratory will have significant implications for PCa by defining the biology of aggressive disease and significantly improving our current understanding of therapy resistance.
Utilizing molecular and translational methods, our lab is focused on several avenues of research including:
- Elucidate novel insight into cryptochrome 1 (CRY1) and other circadian factors function in human tumors in order to identify new avenues for therapeutic intervention.
- Leverage novel patient-derived models to predict therapeutic response in PCa.
- Discern the impact of co-activators, such as CBP/p300, in disease progression.
In sum, these research projects will support the overarching goal to reduce progression of lethal disease and enhance efficacy of current standard-of-care therapeutics in PCa treatment.
| Gordon N, Gallagher PT, Richter OI, Poudel Neupane N, Mandigo AC, McCann JJ, Dylgjeri E, Vasilevskaya I, McNair C, Paller CJ, Kelly WK, Knudsen KE, Schiewer MJ, Shafi AA. PARP inhibition and pharmacological ascorbate demonstrate synergy in castration-resistant prostate cancer. Mol Oncol. 2026 Jan 14. doi: 10.1002/1878-0261.70183. Epub ahead of print. PMID: 41534532. |
| Sardar S, McNair CM, Ravindranath L, Chand SN, Yuan W, Bogdan D, Welti J, Sharp A, Ryan NK, Knudsen LA, Schiewer MJ, DeArment EG, Janas T, Su XA, Butler LM, de Bono JS, Frese K, Brooks N, Pegg N, Knudsen KE, Shafi AA. AR coactivators, CBP/p300, are critical mediators of DNA repair in prostate cancer. Oncogene. 2024 Oct;43(43):3197-3213. PubMed Central PMCID: PMC11493679. |
| Nelson NG, Burke SE, Cappelli L, Matlack LE, Smith AP, Francois N, Lombardo JF, Shah YB, Wen KY, Shafi AA, Simone NL. Temporal Considerations in Brain Metastases Radiation Therapy: The Intersection of Chronobiology and Patient Profiles. Clocks Sleep. 2024 Mar 21;6(1):200-210. PubMed Central PMCID: PMC10968878. |
| Mandigo AC, Shafi AA, McCann JJ, Yuan W, Laufer TS, Bogdan D, Gallagher L, Dylgjeri E, Semenova G, Vasilevskaya IA, Schiewer MJ, McNair CM, de Bono JS, Knudsen KE. Novel Oncogenic Transcription Factor Cooperation in RB-Deficient Cancer. Cancer Res. 2022 Jan 15;82(2):221-234. PubMed Central PMCID: PMC9397633. |
| Shafi AA, McNair CM, McCann JJ, Alshalalfa M, Shostak A, Severson TM, Zhu Y, Bergman A, Gordon N, Mandigo AC, Chand SN, Gallagher P, Dylgjeri E, Laufer TS, Vasilevskaya IA, Schiewer MJ, Brunner M, Feng FY, Zwart W, Knudsen KE. The circadian cryptochrome, CRY1, is a pro-tumorigenic factor that rhythmically modulates DNA repair. Nat Commun. 2021 Jan 15;12(1):401. PubMed Central PMCID: PMC7810852. |
| Shafi AA, Knudsen KE. Cancer and the Circadian Clock. Cancer Res. 2019 Aug 1;79(15):3806-3814. PubMed Central PMCID: PMC8121183. |
Area of Research
Institution Affiliations
HJF Assistant Professor in support of Uniformed Services Univeristy (USU), Murtha Cancer Center Research Program (MCCRP), Center for Prostate Disease Research (CPDR), Molecular and Cellular Biology (MCB) Graduate Program.