S

Stylus Medicine

In vivo genome editing for CAR-T

Research Associate - Molecular & Cellular Immunology

Full-TimeUpdated on 10/23/2026
$85k - $95k
Mid
Bachelor's
Cambridge, MA, USA
In Person
Biology & BiotechTranslational Research & Bench Biology

About the job

Requirements
  • A bachelor's degree in Biology, Bioengineering, Immunology, or a related field is required.
  • Hands-on molecular biology experience, including polymerase chain reaction, cloning, bacterial transformations, minipreps, maxipreps, and in vitro transcription is required.
  • Hands-on mammalian cell culture expertise, including culturing tumor cell lines and primary T cells or peripheral blood mononuclear cells, co-culture experiments, flow cytometry, and genomic DNA extraction is required.
  • Ability to execute, interpret, and troubleshoot experiments independently and collaboratively is required.
  • Experience maintaining meticulous records, including an organized lab notebook, lab inventory, and experimental results, is required.
  • Ability to convey technical information and collaborate in a fast-paced, rapidly developing environment is required.
  • Enthusiasm and curiosity to learn and apply new laboratory techniques across a variety of sub-disciplines is required.
Responsibilities
  • Perform in vitro T cell experiments to evaluate the efficiency of recombinase-based engineering strategies and characterize the functional ability of resulting CAR-T cells.
  • Perform cloning and prepare nucleic acid materials and/or lipid nanoparticles to support cell culture experiments.
  • Analyze and interpret data and produce data reports to inform project direction.
  • Communicate findings to internal teams.
  • Maintain detailed and accurate laboratory records in compliance with data integrity and documentation standards.
Desired Qualifications
  • Familiarity with producing targeted lipid nanoparticles and/or working with CAR-T cells is preferred.

About the company

Stylus Medicine develops in vivo genetic medicines by combining engineered, therapeutic-grade recombinases with non-viral lipid nanoparticle (LNP) delivery. This platform enables sequence-specific genome integration to insert large genetic payloads directly inside a patient’s body, bypassing the complex steps of ex vivo cell modification. The initial focus is in oncology, delivering a recombinase and a CAR-encoding DNA payload to a patient’s T cells via LNP infusion, effectively turning the patient’s body into an in vivo CAR-T cell factory. The modular system can adapt CAR constructs to target different cancer antigens and holds potential for autoimmune and other genetic diseases beyond oncology. The company positions itself as an off-the-shelf, scalable genetic therapy approach that streamlines treatment workflows and broadens patient access by avoiding traditional ex vivo manufacturing.

Company Size

11-50

Company Stage

Series A

Total Funding

$85M

Headquarters

Cambridge, Massachusetts

Founded

2022

Get referred to Stylus Medicine

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • Stylus presented preclinical in vivo CAR-T data at ASGCT 2025, signaling progress.
  • Emile Nuwaysir presented at JPMorgan on January 13, 2026, keeping investor visibility high.
  • Lilly’s January and April 2026 recombinase deals validate Stylus’s core technical thesis.

What critics are saying

  • Stylus disclosed no lead program by March 2026, leaving the platform scientifically unproven.
  • Lilly’s 2026 Profluent and Seamless deals crowd Stylus’s recombinase niche quickly.
  • CD3-targeted LNP delivery and recombinase immunogenicity can kill the platform before clinic translation.

What makes Stylus Medicine unique

  • Stylus pairs therapeutic recombinases with targeted LNPs for in vivo genome integration.
  • Patrick Hsu’s 2025 recombinase research underpins Stylus’s kilobase-scale DNA insertion platform.
  • RA Capital, Khosla, Lilly, and J&J funded Stylus before any public clinical data.

Help us improve and share your feedback! Did you find this helpful?

Benefits

  • Professional Development Budget

Growth & Insights and Company News

6 month growth

2%

1 year growth

2%

2 year growth

2%
Pharmaceutical Technology
Apr 29th, 2026
Eli Lilly bets on recombinases in $2.25bn Profluent R&D pact.

Eli Lilly bets on recombinases in $2.25bn Profluent R&D pact. The pair will harness AI to discover and develop recombinases for precise, large-scale gene editing. Eli Lilly is locking down on its rapid expansion strategy with a second deal this week - joining forces with artificial intelligence (AI) biotech, Profluent, to develop recombinases for large-scale gene editing. The deal, which will see Lilly hand over an undisclosed upfront payment and funding for Profluent's R&D efforts, could deem the biotech eligible for $2.25bn in development and commercial milestones. Profluent will also see tiered royalties on net sales if any of the developed recombinases were to make it to market. Through this partnership, Lilly and Profluent will work across multiple programmes, which will focus on developing and commercialising site-specific recombinases for diseases with "severe unmet needs". To achieve this, Profluent will take an AI-driven approach - using the technology to create and optimise custom recombinases targeting exact locations in the genome to enable large-scale, precise DNA editing. Under the deal's terms, Lilly will also gain the exclusive rights to take selected recombinases through both early and clinical development to commercialisation. According to Profluent, altering DNA on a kilobase scale could help address the variation in mutations often seen across patients with genetic diseases - potentially allowing more patients in a heterogeneous population to gain benefit compared with the one-size-fits-all approach taken by standard knock-out and base editing methods. In a statement, Profluent's co-founder and CEO, Ali Madani, noted that kilobase-scale DNA editing is the "holy grail in genetic medicine," and AI is the only way to truly unlock the potential of designer recombinases for any location in the genome. Lilly forges on with dealmaking spree. Lilly's partnership with Profluent is not the big pharma's first foray into the world of recombinases, as the company previously forged a $1.12bn collaboration with German biotech, Seamless Therapeutics, to develop recombinase-based therapies for hearing loss in January 2026. The Indiana-based pharma, alongside Johnson & Johnson, also poured funds into an $85m financing raised by in vivo gene editing startup, Stylus Medicine - supporting the development of its cancer therapies. Alongside its activity in the recombinase space, Lilly has been on somewhat of a dealmaking spree over the first months of 2026, having handed over $21bn to acquire six biotechs across operating areas like oncology, immunology and cardiovascular diseases. Most recently, the pharma company bought Janus kinase (JAK) inhibitor specialist, Ajax Therapeutics, for $2.3bn - potentially expanding its presence in the blood cancer market. Lilly's deal-heavy strategy is similarly mirrored across the pharmaceutical space, as companies look to restock their pipelines amid the looming patent expiries facing their portfolios. Give your business an edge with its leading industry insights.

The Pharma Letter
May 14th, 2025
Stylus Medicine launches with $85M funding

Stylus Medicine, a biotech company based in Cambridge, USA, has emerged from stealth mode with $85 million in funding.

Yahoo Finance
May 14th, 2025
Stylus Medicine launches with $85m to advance in vivo gene editing

Stylus will use the Eli Lilly and J&J-backed funds to advance its in vivo genetic medicines platform and develop its pipeline.

Fierce Biotech
May 13th, 2025
Stylus Medicine raises $85M for gene editing.

Stylus Medicine has emerged from stealth with $85 million in funding to develop next-gen in vivo genetic medicines. The financing includes a prior $40 million series A and a recent $45 million series A extension, with investors like RA Capital, Khosla Ventures, Eli Lilly, and J&J Innovation. Led by CEO Emile Nuwaysir, Stylus aims to simplify gene editing with a platform featuring recombinase technology. Preclinical data will be presented at the American Society of Gene & Cell Therapy meeting.

Endpoints News
May 12th, 2025
Stylus Medicine raises $85M for tech

Patrick Hsu's startup, Stylus Medicine, has launched with an ambitious goal to develop new gene insertion technologies beyond CRISPR. The company has successfully raised $85 million to support its development efforts.