Jonathan Portman
Associate Director, Nonclinical & Translational Development @ Terrestrial
About
I'm a nonclinical and translational development leader with deep expertise across PK/PD, toxicology, immunogenicity, and IND-enabling strategy, applied to peptides, biologics, and advanced delivery platforms. In my current role, I drive much of the nonclinical and translational development behind microneedle-based delivery of GLP-1 therapeutics, advancing programs from early development toward first-in-human. I own significant portions of our PK/PD, toxicology, immunogenicity, and IND-enabling work — designing and overseeing GLP toxicology and PK studies, serving as study director on nonclinical PK, managing the CRO partnerships that execute them, and authoring the preclinical study reports and CTD Module 2 and 4 sections behind our IND submissions. Underneath the development work is a PhD-level foundation in immunology. I use it to assess on- and off-target immunogenicity risk across modalities — peptides, proteins, VLPs, and nucleic-acid platforms — and to turn that into strategy that de-risks programs and sharpens clinical decisions. It's the through-line connecting where I started to the work I do now. What I bring: Nonclinical & translational development — integrating PK/PD, toxicology, and immunogenicity to move programs efficiently from preclinical through first-in-humanIND-enabling execution — study design, data integration, preclinical study reports, and CTD Module 2/4 authoringCRO selection & oversight — running external partners to deliver high-quality, on-time data across complex programsImmunogenicity & modality expertise — applying deep immunology to risk assessment across therapeutics and vaccinesTeam & cross-functional leadership — building high-performing teams and partnering across research, clinical, regulatory, and CMC to hit milestones What I enjoy most is the point where rigorous science meets execution — turning complex biology into development plans that actually move new therapies toward patients. Always glad to connect with others working in translational and nonclinical development, advanced delivery, or metabolic disease.
United States
Greater Boston
Biotechnology
Translational Science, Nonclinical Development, PK/PD, CRO Management, Immunogenicity, Toxicology, DMPK, Tissue, Ex Vivo, Pharmaceuticals, Biomarker Development, Inflammation, Cell Based Assays, Animal Work, Translational Medicine, Investigational New Drug Application (IND), In Vivo, Pre-clinical Studies, In Vitro, Biomedical Sciences
Experience

Associate Director, Nonclinical & Translational Development
Cambridge, MA
- Drive translational development strategy for microneedle-based delivery of GLP-1 therapeutics, overseeing PK/PD, efficacy, toxicology, and immunogenicity assessments across preclinical and clinical programs - Direct IND-enabling activities, including study design, data integration, and cross-functional contributions to regulatory submissions - Own and manage external CRO partnerships, driving study execution, timelines, and data quality for PK, GLP-toxicology, and bioanalytical programs - Serve as internal subject matter expert across pharmacokinetics, immunogenicity risk assessment, and translational strategy, supporting decision-making from early development through first-in-human studies - Led development of clinical sample strategy and bioanalytical plans for Phase I studies, including sample handling, logistics, and downstream data reporting - Continue to provide leadership in immunology and vaccine-related programs, including assay strategy and immune profiling across diverse platforms (mRNA, VLPs, inactivated vaccines) - Built and led a high-performing team responsible for assay development, qualification, and execution in both research and GLP environments - Contributed significantly to multiple IND submissions, including data generation, figure preparation, and regulatory documentation - Ensure compliance with GLP and internal quality systems, including SOP authorship, assay validation, and equipment qualification - Champion a strong team culture through mentorship, training, and cross-functional collaboration

Scientist II
Cambridge, Massachusetts
I led a team of research associates in the design, execution, and interpretation of pre-clinical experiments to advance and mature a collection of pipeline programs based on novel MAPS vaccines. In particular, my team contributed significantly to our C. difficile, Oncology, and viral pipeline programs in pursuit of pre-clinical proof of concept and to support IND-enabling studies. My team's expertise included immunoassays (ELISA, MSD, flow cytometry, ELISpot, etc), bacterial and mammalian cell culture, and in vivo study design / execution. We worked closely with our platform teams to achieve company goals and thrive in the congenial, collaborative environment.

Doctor of Philosophy
Berkeley, CA
As a member of Dr. Daniel Portnoy's lab, I managed three successful projects investigating how the foodborne pathogen Listeria monocytogenes senses and responds to its human host during infection. This work led to four peer-reviewed publications (one in preparation), and one patent. During this time, I also mentored two graduate students, two undergraduates, and one high school student in experimental design, project management, and career development. I was also an active participant and leader in three graduate groups, two career development clubs, an undergraduate mentoring program, and multiple extracurricular organizations.

Research Intern
South San Francisco, CA
Accepted into a highly competitive, 12-week internship program performing hypothesis-driven research within the Department of Infectious Diseases (gRED). In addition to research, utilized this opportunity to explore future career opportunities in early-stage research, business development, and portfolio management. All findings were presented to departmental leadership at the conclusion of the internship.

Research Intern
UC Davis Medical Center
Sacramento, California Area
Led a project exploring the potential efficacy of fungal secondary metabolites as cancer therapeutics.
Jonathan Portman's Contact Information
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