With fresh funding and a new name, BreezeBio has hit a key inflection point, CEO Kunwoo Lee told FirstWord; the company is "shifting from platform validation to product advancement."Formerly GenEdit, the biotech raised a $60-million series B on Wednesday to advance its lead programme, BRZ-101, toward IND-enabling studies. The experimental diabetes treatment is designed to re-educate the immune system to stop attacking pancreatic beta-cell antigens and instead recognise them as "self." The strategy behind BRZ-101, Lee said, is to address the autoimmune driver of diabetes instead of its metabolic consequences. The candidate delivers mRNA-encoded autoantigens, along with tolerogenic co-factors, to antigen-presenting cells, promoting the induction of antigen-specific regulatory T cells without triggering broad immune suppression. "Our approach is mechanistically distinct in that it aims to intervene at the level of antigen-specific immune recognition," Lee said. "The therapeutic benefit is preservation of the remaining beta cells and some restoration of beta cell function."BreezeBio believes that if BRZ-101 is given to a patient with pre-diabetes, they may never need to use insulin. As a diabetes treatment, the company thinks it could help patients more easily maintain blood glucose levels with insulin, and have better long-term health outcomes. From platform to productAlongside its internal pipeline, BreezeBio is building out its NanoGalaxy platform, which features thousands of chemically distinct hydrophilic nanoparticles (HNPs) designed to overcome the capacity, selectivity, immunogenicity and manufacturing challenges faced by traditional methods of delivering genetic payloads such as viral vectors. The company has demonstrated targeted delivery to the immune, cardiac, pulmonary, and central nervous systems.Two years ago, the biotech struck a deal with Roche's Genentech unit to discover and develop HNPs to deliver nucleic acid-based medicines for autoimmune diseases, and simultaneously closed a $24-million series A1 round. Since then, BreezeBio has "advanced NanoGalaxy from a delivery-focused platform into the foundation of a product-driven company," Lee said. The firm also prioritised development of BRZ-101, but now with the programme nearing the clinic, BreezeBio has hit the point where it needs to re-up on funding, given the costs to scale manufacturing, finish preclinical testing and prepare for clinical development. The series B, led by new investors Yuanta Investment and DSC Investment, will help the company move BRZ-101 forward, advance additional programmes in autoimmune disease and oncology, and improve the precision and targeting capabilities of NanoGalaxy, Lee said. BreezeBio is expanding the platform's toolkit, conjugating the nanoparticles to ligands that can facilitate delivery to T cells, enabling in vivo CAR-T development (see – see Spotlight On: Big pharma's big bets on in vivo cell therapy). SV investment, Kiwoom Investment, STIC Ventures and Top Harvest Capital also participated in the round, alongside existing investors DAYLI Partners, Pathway Investment, Loftyrock Investment, Korea Investment Partners, WOORI Venture Partners, KDB Silicon Valley and ACVC Partners.