Author

Val Piekarsa

Harvard University

Listed by name: these papers carry no ORCID for this author, so different people with the same name may be mixed together.

Biology Disciplines

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Signature Assays, Organisms & Methods

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Research Focus:cell type annotation· 3 Approach:experimental assay· 3 Research Focus:differential expression· 2 Research Focus:gene regulatory network inference· 2 Organism:human· 2 Assay:scRNA-seq· 2 Research Focus:clustering· 1 Assay:flow cytometry· 1

Frequent Co-Authors

Christophe O. BenoistiD· 3 shared David ZemmouriD· 3 shared Ian MagilliD· 3 shared Liang Yang· 3 shared Myriam CrozeiD· 3 shared Odhran Casey· 3 shared Serge M. CandéiasiD· 3 shared Σοφία ΚοσσίδαiD· 3 shared

Activity by Year

2025-2026 · peak 2/yr

Co-Author Collaboration Network

10 top collaborators · 45 mutual co-author links

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3 shared papersImmunology

Christophe O. BenoistORCID

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3 papers

Recent·Most cited

The αβTCR repertoire at scale in the immgenT dataset

Myriam Croze, Liang Yang, Serge M. Candéias, Ian Magill, Odhran Casey, Val Piekarsa, Brinda Vijaykumar, Véronique Giudicelli, Σοφία Κοσσίδα, David Zemmour, Christophe O. Benoist, the immgenT project

The paper analyzes the αβTCR repertoire across 734 mouse samples to uncover patterns in TCR diversity, non-random joining, and clonal expansion.

bioRxiv · Jun 12, 2026 · PreprintImmunology

Genomic Specificity of Anti-TCR mAbs determined by single-cell RNAseq

Ian Magill, Val Piekarsa, Σοφία Κοσσίδα, Joshua D. Croteau, Amy Huei‐Yi Lee, ROBERT S. BALDERAS, David Zemmour, Christophe O. Benoist, immgenT Project, Aaron C. Liu, Alexander V. Chervonsky, Alexandra Cassano, Alia Welsh, Ananda W. Goldrath, Andrea Lebron Figueroa, , Xutong Gong

The paper identifies TCR-V gene usage patterns in T cells sorted by anti-TCR mAbs using single-cell RNAseq and finds enriched ERV1-family LTR expression in specific TRBV regions.

The Journal of Immunology · Aug 1, 2025Peer-reviewedImmunology

Expansion of mammary intraepithelial lymphocytes and intestinal inputs shape T cell dynamics in lactogenesis

Abigail A. Jaquish, Eleni Phung, Xutong Gong, Pilar Baldominos, Silvia Galván-Peña, Ian Magill, Isabelle Bursulaya, Eleonora Marina, Aaron C. Liu, Alexander V. Chervonsky, Alexandra Cassano, Alia Welsh, Ananda W. Goldrath, Andrea Lebron Figueroa, Ankit Malik, , Deepshika Ramanan

The paper examines T cell changes in mammary glands during pregnancy and lactation, finding an expansion of T effector cells and similarities to intestinal T cells.

Nature Immunology · Jul 29, 2025Peer-reviewedImmunology