/Companies

Helix Nanotechnologies

YC W17

Boston, US · Founded 2013 · 22 employees · 23 known investors

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Helix Nanotechnologies develops mRNA-based therapeutics for disease treatment and environmental applications, currently advancing a COVID-19 vaccine candidate for immunocompromised patients and testing interventions targeting climate challenges.

Also known as HelixNano

Founders & leadership· Y Combinator alumni (W17)

Helix Nanotechnologies was founded in 2013 by Nikolai Eroshenko and Hannu Rajaniemi.

NENikolai Eroshenko
Nikolai EroshenkoCo-founder · Board Member
HRHannu Rajaniemi
Hannu RajaniemiCo-Founder and CEOExecutive Director at Red Queen Bio

Investors · 23

Fifty Yearslisted by Fifty YearsSan Francisco · $250K – $2M

How we know: Fifty Years's portfolio page · the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

Lifeline Ventureslisted by Lifeline VenturesHelsinki

How we know: Lifeline Ventures's portfolio page · the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

Metaplanetlisted by MetaplanetTallinn · $500K – $10M

How we know: Metaplanet's portfolio page · the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

Yes VClisted by Yes VCSan Francisco · $30K – $1.5M

How we know: the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

CH VenturesreportedChapel Hill

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Incite.orgreportedSan Francisco

How we know: Y Combinator's founder network · Not right? Tell us

Nordic MakersreportedCopenhagen · $550K – $1.1M

How we know: Y Combinator's founder network · Not right? Tell us

Starlight VenturesreportedMiami · $100K – $3M

How we know: the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

Company profile

researched Aug 2026

Helix Nanotechnologies (HelixNano) is a Boston-based biotechnology company developing what it describes as a next-generation mRNA platform intended to address cancer, COVID-19 and climate-related problems. The company frames mRNA as a programmable interface to biology, with the goal of making treatments inexpensive and development decentralized so that biological function can be modified in a targeted, rapid fashion. It states that by approaching mRNA improvements from first principles it has compressed experiments that previously required months or years into weeks, at costs measured in thousands rather than millions of dollars.

The company has begun applying this technology in two disclosed directions: moving a COVID-19 vaccine candidate aimed at immunocompromised patients toward the clinic, and testing an intervention described as having large environmental impact. Co-founder Hannu Rajaniemi characterizes the longer-term aim as building a unified interface to the immune system — reading information from the immune system and writing instructions back to it — with an illustrative milestone being large-scale cancer prevention trials that keep early-stage disease from progressing to advanced tumors.

Helix Nanotechnologies is categorized across artificial intelligence, biotech, genomics and nanotechnology, and reported a team size of 22.

Founding story

The company was co-founded by Hannu Rajaniemi, a Finnish-American science fiction author who holds a PhD in string theory from the University of Edinburgh and previously co-founded a company with another string theorist that solved mathematical problems for industry with a team of around ten PhDs. Nikolai Eroshenko is listed as founder and Chief Scientific Officer.

Traction

Publicly described progress includes advancing a COVID-19 vaccine candidate for immunocompromised patients toward the clinic and testing an intervention intended to have significant environmental impact. The company reported a team of 22 people.

Latest developments

In April 2024, co-founder Hannu Rajaniemi discussed the company's work on a podcast, describing the platform as a unified interface to the immune system and outlining a five-year goal of demonstrating closed-loop interaction with the immune system, illustrated by a hypothetical 100,000-patient cancer prevention trial.

▸Full profile — market position, technology, go-to-market, geography, history

Market position

The company positions itself as building a next-generation, and by its co-founder's description the world's most advanced, mRNA platform, spanning oncology, infectious disease and environmental applications rather than a single indication.

Helix Nanotechnologies attributes its differentiation to rebuilding mRNA technology from first principles, which it says yields far faster and cheaper experimentation, and to a flat internal research culture in which individual and junior scientists' side projects have generated some of its technologies and can shape company direction.

Technology

The core of the company is an mRNA platform developed by revisiting mRNA design from first principles. The company reports that this approach shortens experimental cycles from months or years to weeks and reduces per-experiment costs from millions to thousands of dollars. The longer-term technical ambition described by its co-founder is an "immune-computer interface": reading state information out of the immune system and writing instructions back into it to address emerging disease, with cancer prevention as a target application.

Go-to-market

Therapeutic programs disclosed to date point at patients, notably immunocompromised individuals as recipients of its COVID-19 vaccine candidate, and at cancer patients, including a described scenario of preventing progression in early-stage cancer.

Geography

Headquartered in Boston, United States; co-founder Hannu Rajaniemi is described as being based primarily in California.

History

Helix Nanotechnologies took part in Y Combinator's Winter 2017 batch and remains listed as active on YC's company directory. It has since rolled out early applications of its mRNA technology, including a COVID-19 vaccine candidate for immunocompromised patients being advanced toward the clinic and an intervention targeting environmental impact.

Compiled by commissioned research from 6 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
HeadcountAug 202615
Team sizeJan 202422 employees

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

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Companies working in the same space as Helix Nanotechnologies.

Timeline · 1

launches, deals, and filings
Jan 2017
Participated in Y Combinator Winter 2017 batch

Helix Nanotechnologies is listed as a Y Combinator company in the Winter 2017 batch, based in Boston.

source ↗

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

Legal entities · 1

corporate structure
Helix Nanotechnologies Inc.

▸Research sources · 6

primary sources listed

6 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Helix Nanotechnologies do?
Boston-based biotech building an mRNA platform aimed at cancer, COVID-19 and environmental applications.
Who founded Helix Nanotechnologies?
Helix Nanotechnologies was founded by Nikolai Eroshenko, Hannu Rajaniemi in 2013.
Who are Helix Nanotechnologies's investors?
Helix Nanotechnologies's investors include Alumni Ventures, Bascom Ventures, Beast Ventures, Champion Hill Ventures, DCVC (Data Collective), Fifty Years, Gaingels, HAWKTAIL and 15 more.
Where is Helix Nanotechnologies headquartered?
Helix Nanotechnologies is headquartered in Boston, US.