2seventy bio
It’s about time we think smarter and faster than cancer.
122 employees · est. 2021 · Cambridge, United States
CytoSeek
A cell-therapy technology company developing artificial membrane-binding proteins for oncology and regenerative medicine
2 employees · est. 2017 · Bristol, United Kingdom
CytoSeek is the older company (2021 vs 2017); 2seventy bio is the larger of the two.
Side-by-Side Comparison
| Metric | 2seventy bio | CytoSeek |
|---|---|---|
| Founded | ||
| Founded | 2021 | 2017 older |
| Headquarters | ||
| Headquarters | Cambridge, United States | Bristol, United Kingdom |
| Employees | ||
| Employees | 122 larger | 2 |
| Industry | ||
| Industry | Biotechnology, Health Care, Health and Wellness | Biotechnology, Life Sciences, Pharmaceutical |
| Funding Stage | ||
| Funding Stage | Acquired | Seed |
| Total Funding | ||
| Total Funding | $614.62M | Not tracked yet |
| Funding Rounds | ||
| Funding Rounds | 4 | Not tracked yet |
| Services | ||
| Services | Research & Development, Clinical Trials, Product Development, Scientific Resources Provision, Medicines Access and Support | Development of LNP targeting technologies, Revolutionizing lipid nanoparticle drug delivery, Engineering LNPs for specific cell type targeting |
| Target Customers | ||
| Target Customers | Patients with Cancer, Patients with Hematological Diseases, Neurological and Psychiatric Patients, Healthcare Providers, Patient Advocacy Groups, Medical Researchers | pharmaceutical companies, biotech researchers, healthcare institutions, licensing partners |
| Taxonomy | ||
| Taxonomy | Immuno-oncology, Cell Therapy, Cancer Treatment, Cancer Cell Metabolism, Genomics, Immune Response, Tumor Cell Targeting, Cellular Therapies, Cancer Cell Biology, Genetics, Therapeutic Pipeline, Disruptive Therapies, Oncology Research, Innovative Cancer Therapies | Cell Therapy, Artificial Membrane-Binding Proteins, Oncology, Regenerative Medicine, Cell Membrane Augmentation, Advanced Therapies, Tissue Specific Targeting, Enhanced Cell Survivability, Cancer Treatment, Heart Disease, Osteoarthritis, Diabetic Wound Healing, Biotechnology Spinout, Partnership Development |
| Website | ||
| Website | 2seventybio.com | cytoseek.uk |
About 2seventy bio
2seventy bio is a progressive player in the field of immuno-oncology cell therapy, founded in 2021. With its headquarters in the United States, the company is dedicated to altering the future of cancer treatment. Their innovative approach is encapsulated in the slogan, "It’s about time we think smar...
About CytoSeek
CytoSeek is a pioneering United Kingdom-based company, founded in 2017, that operates within the Biotechnology, Life Sciences, and Pharmaceutical industries. With the slogan "A cell-therapy technology company developing artificial membrane-binding proteins for oncology and regenerative medicine," Cy...
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Compiled from the BounceWatch company index. We last looked at 2seventy bio on 3 Jul 2026, and CytoSeek on 11 Mar 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.