John Liu, MD, PhD

Asst Professor in Residence
Primary Thematic Area
M_Radiation Oncology
Secondary Thematic Area
Research Summary
Basic and translational research of treatment resistance in cancers of the nervous system using high throughput functional genomics and epigenetic engineering approaches.

The Liu Lab at UCSF is an interdisciplinary basic and translational research group dedicated to advancing new treatments for malignant brain tumors and understanding mechanisms of treatment resistance. We develop and apply cutting-edge functional genomic approaches collaboratively to achieve this mission. In particular:

1) Discovery of novel cancer targets using functional genomics.
Advances in CRISPR/Cas9 technologies have enabled large-scale multiplexed genetic screening for novel therapeutic targets and genetic interaction mapping across many contexts. We use genome-wide CRISPR screens and in vivo perturb-seq to identify and characterize targets that render tumors more sensitive to treatment such as chemotherapy or radiation therapy.

2) Role of DNA damage response in radiation treatment resistance.
The ability of cancer cells to repair DNA damage caused by radiation therapy is major barrier to effective treatments for patients with brain tumors. We are interested in targeting known and novel vulnerabilities in the DNA damage response to improve therapeutics against brain tumors such as adult and pediatric glioblastomas, among the deadliest primary brain tumors.

3) Epigenetic engineering as novel precision therapeutics for cancer
Engineered CRISPR/Cas9 systems enable control of gene expression and epigenetic state in cells and tumors. We develop epigenetic editing strategies for in vivo applications in oncology to understand and exploit the role of epigenetics in tumor progression and treatment resistance.

Publications

Epigenetic reprogramming shapes the cellular landscape of schwannoma.

Nature communications

Liu SJ, Casey-Clyde T, Cho NW, Swinderman J, Pekmezci M, Dougherty MC, Foster K, Chen WC, Villanueva-Meyer JE, Swaney DL, Vasudevan HN, Choudhury A, Pak J, Breshears JD, Lang UE, Eaton CD, Hiam-Galvez KJ, Stevenson E, Chen KH, Lien BV, Wu D, Braunstein SE, Sneed PK, Magill ST, Lim D, McDermott MW, Berger MS, Perry A, Krogan NJ, Hansen MR, Spitzer MH, Gilbert L, Theodosopoulos PV, Raleigh DR

Meningioma DNA methylation groups identify biological drivers and therapeutic vulnerabilities.

Nature genetics

Choudhury A, Magill ST, Eaton CD, Prager BC, Chen WC, Cady MA, Seo K, Lucas CG, Casey-Clyde TJ, Vasudevan HN, Liu SJ, Villanueva-Meyer JE, Lam TC, Pu JK, Li LF, Leung GK, Swaney DL, Zhang MY, Chan JW, Qiu Z, Martin MV, Susko MS, Braunstein SE, Bush NAO, Schulte JD, Butowski N, Sneed PK, Berger MS, Krogan NJ, Perry A, Phillips JJ, Solomon DA, Costello JF, McDermott MW, Rich JN, Raleigh DR