People

People

Members of the Witten Lab around a table
The Witten Lab, September 2026.

Principal Investigator

Jacob Witten

Jacob Witten, PhD

Assistant Professor, Department of Genetics & Genome Sciences

Jacob's research focuses on integrating AI with novel high-throughput screening approaches to design lipid nanoparticles for gene therapy. He received his PhD in Computational and Systems Biology from MIT and was a postdoctoral fellow with Dr. Daniel Anderson.

Postdoctoral Researchers

Peng Ning

Peng Ning, PhD

Postdoctoral Researcher

Peng is developing lipid nanoparticles for RNA delivery.

Shashi Singh

Shashi Singh, PhD

Postdoctoral Researcher

Shashi's research develops scalable platforms for targeted RNA delivery and gene editing by combining nanoparticle engineering with high-throughput screening. He uses self-amplifying RNA and ADAR-mediated editing to achieve efficient, low-dose gene modulation in hard-to-target tissues and explores DNA-encoded library–based multiplexed screening to discover new ASO delivery platforms for modulating RNA splicing. He earned his PhD in RNA Biology and Post-Transcriptional Gene Regulation from Jawaharlal Nehru University (New Delhi, India) and was a postdoctoral fellow with Dr. Joseph Luna at Case Western Reserve University (2022–2026) and at Cleveland Clinic (2019–2022).

Graduate Students

Hong Wang

Hong Wang

PhD Student, Department of Biomedical Engineering

Hong's research develops high-throughput screening platforms for targeted systemic drug delivery by combining nanoparticle engineering with multiplexed ex vivo and in vivo biological assays. He is a graduate researcher at Case Western Reserve University, where he established foundational expertise in long non-coding RNAs (lncRNAs) and immune responses in cancer through collaborative research with Dr. William P. Schiemann.

Research Staff

Renee Liou

Renee Liou

Research Technician

Renee received her B.A. in Chemistry and Religion from Amherst College. Her research focuses on nanoparticle formulation and delivery efficiency to improve gene therapy approaches.

Undergraduate Students

Sarayu Maddala

Sarayu Maddala

Undergraduate Student, Biology

Sarayu is an incoming undergraduate student at Case Western Reserve University studying Biology. Her research focuses on leveraging viral biology to develop safer and more effective gene therapies.

Ethan Knapp

Ethan Knapp

Undergraduate Student, Biomedical Engineering

Ethan is a first-year undergraduate student at Case Western Reserve University majoring in Biomedical Engineering. His research includes using CRISPR gene editing and machine learning in predictive modeling to tackle microbiology-based issues.

Mario Vasquez

Mario Vasquez

Undergraduate Student, Biochemistry

Mario is a first-year undergraduate student at Case Western Reserve University majoring in Biochemistry. His research focuses on exploring self-amplifying RNA systems to improve the efficiency and effectiveness of RNA-based technologies.

We are not currently hiring, except for CWRU undergraduate researchers and potentially CWRU master’s students — see the Join page.