tcr-discovery
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Li Sun
Li Sun is the founder and CEO of Shennon Biotechnologies, a San Francisco single-cell immunotherapy company that profiles millions of immune cells in hours to pinpoint the rare T cells and antibody targets that fight cancer. A physicist by training (PhD from Harvard's Weitz lab, M.Eng from MIT), she spent five years as a deep-tech venture investor at Bessemer and Foundation Capital before building the platform herself. Shennon emerged from stealth in March 2023 with a $13M seed round led by DCVC.
Zafrens
Zafrens is a San Diego biotechnology company building an ultra-high-throughput single-cell platform that isolates, images, runs assays on, and sequences millions of individual cells per day. Its Z-Screen technology swaps the conventional 96-well plate for a credit-card-sized plastic chip holding 50,000 to 200,000 microwells, each with integrated imaging and multi-omic sequencing. By linking perturbation to genotype, phenotype and function at single-cell resolution, Zafrens compresses multiple stages of drug discovery into a single benchtop experiment - a 500x to 2,000x jump in the number of experiments a scientist can run at one timepoint.
Alloy Therapeutics, Inc.
Alloy Therapeutics is a biotechnology ecosystem company that democratizes access to the tools, platforms, and expertise needed to discover and develop new drugs. Founded in 2017 by Errik Anderson and headquartered in the Boston area (Lexington, Massachusetts), Alloy gives more than 200 partners non-exclusive, affordable access to proprietary technologies - led by its royalty-free ATX-Gx transgenic-mouse antibody discovery platform - along with discovery services and a venture studio that builds new biotech companies. Its model is unusual: Alloy reinvests revenue into innovation and its controlling stock cannot be sold. In April 2026 the company raised a $40M Series E at a $1B valuation.