Engineered Skeletal Muscle Tissue — Who Actually Supplies It (2026)

The short answer: you can buy finished engineered skeletal muscle off a catalogue — from exactly one supplier, and without a force specification.

myriamed, a Göttingen spin-out, runs a public storefront selling myrTissue-Skeletal at €1,400 for one tissue, €5,400 for five and €8,000 for twelve, shipped at ambient temperature, ready after a 24-hour recovery, with a certificate of analysis per released batch and a 7–11 week order-related manufacturing time. That is a real product with a real price and a real lead time, and any page claiming the category is empty is out of date. This one used to.

What myriamed does not publish is a force acceptance criterion — no twitch force, no specific force, no tolerance. The certificate of analysis exists but its contents are not public. So if your requirement is “a construct that develops at least 500 µN of twitch force”, this is still not a thing you can order against a number; it is a thing you can order and then measure yourself.

Below that, what is for sale is the mould. Two companies sell empty plasticware with micropillar anchors into which you cast your own tissue, one of them at a public price of $440.00 for eight experiments. Three or four companies will quote a custom programme that builds the tissue — but the deliverable is normally a report, not the object.

The good news, which matters more than the bad: the spec most buyers ask for is already inside the demonstrated envelope of an off-the-shelf commercial casting system. The remaining gap is not that nobody can grow the tissue — one company will sell you it today. It is that nobody will yet commit to a force number in writing. That is a commercial gap, not a scientific one.

The availability table

What you might want	Catalogue	Custom programme	Academic only	Who, and what they actually give you
Empty muscle casting device with dual micropillar anchors	Yes	—	—	eNUVIO OMEGA-MP: 4 devices / 8 experiments, $440.00, 21.25 mm diameter, fits a 12-well plate, open-top chambers for electrode access
Higher-throughput muscle casting microplate	Product exists, quote only	—	—	eNUVIO OMEGA96-MP, 96 experiments — no public price
24-well muscle casting plate plus stimulation and force instrument	Product exists, quote only	—	—	Curi Bio Mantarray Plate Kit, Stimulation Kit lid, MantaReady media, Stingray for stimulation and maturation. Request-a-quote on every SKU. Claimed >95% tissue formation success rate
Myogenic cells to cast with	Yes	—	—	iXCells iPSC-derived myoblasts $1,076; bit.bio ioSkeletal Myocytes from $1,198; PromoCell primary SkMC $1,124; Cook MyoSite skMDC quote-only
A finished living skeletal muscle tissue delivered to you	Yes	—	—	myriamed myrTissue-Skeletal WT: €1,400 / €5,400 / €8,000 for 1 / 5 / 12 tissues, ambient shipping, ready after 24 h recovery, CoA per batch, 7–11 weeks. Hypaxial origin, from iPSC-derived myoblasts
That tissue delivered against a stated force acceptance criterion	No — nowhere	Plausibly	—	myriamed publishes no force spec. eNUVIO contract research explicitly lists 3D muscle cultures; Curi Bio Curi Engine builds them internally; Creative Biolabs and Creative Bioarray advertise custom 3D muscle models
Force and fatigue phenotyping as a standalone service	No	Yes, bundled	—	Available inside drug-discovery service contracts, not as a standalone acceptance test
Custom geometry — non-standard length, loop or hook terminations	No	Yes, as microfabrication NRE	—	eNUVIO custom devices: design, prototyping, cleanroom production, features to ~1 µm, high-aspect-ratio moulding, glass bonding, surface modification. “A few custom devices or large batch production”
GMP-grade muscle cells at scale	No	Yes	—	Cook MyoSite: phase-appropriate GMP manufacturing, 3,470 sq ft ISO 7 / ISO 5 cleanroom, donor-population-specific procurement
Vascularised or innervated thick muscle	No	Partially — NMJ models advertised	Largely yes	eNUVIO OMEGA-NMJ device plus contract NMJ co-culture; thick vascularised muscle remains a laboratory result

Who sells the moulds

eNUVIO (Montréal). The OMEGA-MP 3D Skeletal Muscle Culture Device is the one hard public number in this entire market: USD $440.00 for four devices supporting eight experiments — roughly $55 per experiment for the plasticware. Each device is 21.25 mm in diameter and fits a 12-well plate, with two micropillars per chamber acting as tissue anchors and open-top chambers giving full access to the culture, including for electrodes. Their own description is explicit about the division of labour: myogenic progenitor cells from primary, iPSC or immortalised sources are resuspended in an ECM-derived hydrogel mixture and seeded into each culture chamber, by you.

They also sell a 96-experiment microplate version (quote only) and an OMEGA-NMJ neuromuscular junction chip.

Curi Bio (Seattle). The Mantarray system is the deepest muscle-specific platform commercially available: a 24-well tissue casting plate kit, a Stimulation Kit lid giving individual stimulation protocols per well for both acute and long-term pacing, MantaReady media, myoblasts and iPSC lines, plus the Stingray product for stimulation and maturation of 3D engineered tissues. Their marketing language — “Easily Form 3D Tissues in Your Lab” — is accurate about what is being sold. Every SKU is request-a-quote, so there is no published price. Mini Plate variants reduce tissue volume by roughly 60 percent, and post stiffness is a variable you can select.

Neither company sells you a muscle. They sell you the mould. That is not a criticism; it is a coherent business model and both do it well. It is simply the thing buyers most often misunderstand before purchase.

The real published force numbers

This is the section to read before deciding whether your spec is ambitious.

Curi Bio’s own Mantarray validation study (Smith et al., Journal of Tissue Engineering, 2022 — authors from Curi Bio and the University of Washington) reports the following for engineered muscle tissues cast in standard 24-well Mantarray plates:

Tissue	Measurement	Day 7	Day 10	Day 14
iPSC-derived EMT (UCS-2), 2% horse serum throughout	Average twitch force	385.8 ± 51.1 µN	1156.3 ± 129.1 µN	943.1 ± 162.1 µN
iPSC-derived EMT (UCS-2)	Average tetanic force	1660.7 ± 88.7 µN	2498.4 ± 58.3 µN	1839.0 ± 162.2 µN
iPSC-derived EMT (UC3-4)	Average tetanic force	607.9 ± 27.5 µN	1693.7 ± 99.5 µN	995.3 ± 54.7 µN
Primary human myoblast EMT	Average twitch force	306.5 ± 22.2 µN	468.8 ± 37.5 µN	568.0 ± 103.7 µN
Primary human myoblast EMT	Average tetanic force	740.8 ± 91.3 µN	1160.5 ± 118.8 µN	1387.7 ± 275.7 µN
iPSC-derived EMT, dystrophin-null (DMD model), day 10	Twitch / tetanic	—	414.4 ± 21.9 / 267.2 ± 20.2 µN	—
iPSC-derived EMT, healthy control, day 10	Twitch / tetanic	—	1319.9 ± 68.2 / 1654.1 ± 97.6 µN	—

Three things follow directly from that table.

A 500 µN twitch requirement is a timepoint, not a breakthrough. iPSC-derived tissues in that study crossed 385 µN at day 7 and reached 1156 µN by day 10. Primary myoblast tissues crossed 468 µN at day 10 and kept rising through day 14. If your specification is “at least 500 µN twitch”, you are asking for a day-8-to-10 tissue on an existing commercial platform.

Media formulation changes the answer more than cell source does. The same study compared three media conditions. Maintenance in 2% horse serum throughout gave the best force development. Treatment with 2% KSR gave 413.0 µN at day 7 rising to 459.3 µN at day 10 and then collapsing to 100.2 µN by day 14. Treatment with 15% FBS gave 337.4, 399.6 and 321.7 µN across the same days. A tenfold difference in day-14 force from a media choice is not a rounding error, and it means any quote you receive should state the media condition.

Post stiffness is a design variable with a measurable effect. At day 10, posts with stiffnesses of 1.92, 1.44 and 0.96 N/m produced average twitch responses of 1156.3, 919.7 and 624.0 µN respectively. Stiffer posts, more force. If you are specifying a device, specify the post stiffness.

On maturation, the ceiling is much higher than any of the above. Khodabukus et al. (Biomaterials, 2019) applied one week of intermittent electrical stimulation to 3D tissue-engineered human myobundles and reported a roughly twofold increase in calcium transient amplitude and a roughly threefold increase in tetanic force, producing 19.3 mN/mm² specific force — the highest reported for engineered human muscle at the time of publication. At that specific force, a 1 mm² cross-section corresponds to roughly 19,300 µN of tetanic output, which is around forty times a 500 µN twitch ask.

Independently, one iPSC muscle cell supplier reports that muscle bundles made from their product show twitch and tetanic forces at day 7 that strengthen over time, with contraction inhibited by BDM (a myosin-II ATPase inhibitor) and increased by caffeine — a useful pharmacological validation that the force you measure is genuinely contractile rather than an artefact.

So what is actually missing

Deconstruct a typical specification — say, twenty units of a 10 mm aligned skeletal muscle strip, 1 mm cross-section, anchored at both ends, at least 500 µN twitch, electrically stimulable, matured and functional — against what exists:

Force output. Demonstrated on a commercial platform, with published numbers, comfortably above the ask.
Electrical stimulation. Commercially available. Curi Bio sells a stimulation lid with individual per-well protocols for acute and long-term pacing; eNUVIO’s open-top chambers allow electrode access.
Maturation. The published lever is chronic electrical stimulation, with a threefold tetanic increase over one week.
Alignment and dual-end anchoring. Already achieved. That is exactly what the two-micropillar geometry does — the tissue compacts and self-assembles around the posts.
Cells. Catalogue items. Primary, iPSC-derived or GMP-manufactured, all commercially available.
Force measurement. Commercially available as an instrument and as a service inside a study.
Custom geometry — a 10 mm span with loop terminations. The only genuinely custom element, and it is a mould redesign rather than a biology problem. One supplier runs a cleanroom that will design and produce custom PDMS devices from scratch, with features in the 1 µm range and high-aspect-ratio moulding, for anything from a few devices to a large batch.

Every individual requirement is met by existing commercial capability. What does not exist is any party willing to integrate them and hand you the physical object with a force acceptance criterion attached.

Who will quote it as a custom programme

Organisation	What they advertise	Realistic deliverable	Why they are on this list
eNUVIO (Montréal)	“Fully customized contract research services”, explicitly listing 3D muscle cultures and neuromuscular junction models (2D–3D), plus custom microfabrication	Custom mould, plus contract casting	The only party holding all three pieces: a muscle casting device at a public price, a full custom microfabrication shop with cleanroom production, and an advertised contract service naming 3D muscle culture. They state they do not offer off-the-shelf assays but develop customised ones
Curi Bio (Seattle)	Curi Engine phased services: CRISPR iPSC editing 8–16 weeks; iPSC expansion and banking 4–6 weeks; directed differentiation to myoblasts 4–8 weeks; 3D phenotyping study typically 3–5 weeks; screening 4–12 weeks. Engagement models: fee-for-service at fixed price, dedicated FTE, or hybrid	A report, with the tissue built internally as a routine step	Deepest muscle capability and the only party with published force data proving the spec. The blocker is commercial rather than technical: their product is a dataset. Whether they will ship the plate instead of the report is unconfirmed and is exactly the question to put to them
Creative Biolabs	Muscle-On-A-Chip Model Development Service providing “customized, in vitro 3D skeletal muscle models”; will use patient cells or CRISPR-engineer mutations; will tailor device design and culture protocols including mechanical stimulation	A development project	Fastest route to a quote. Execution against a force acceptance test is unproven
Creative Bioarray	Custom 3D cell culture model development including cell patterning for skeletal muscle models	A development project	Same shape, same caveat
Cook MyoSite (Pittsburgh)	Muscle and other adherent cell production, cryopreservation at any scale, procurement from specific donor populations, custom media, phase-appropriate GMP manufacturing, 3,470 sq ft ISO 7 / ISO 5 cleanroom	Cells, at scale and at GMP — not a built construct	The right source for the myoblasts to build with, especially if donor selection or GMP matters. Over two decades in muscle-derived cell therapy manufacturing

What it plausibly costs

Everything in this section is a modelled estimate, not a quotation. No supplier publishes a price for a finished muscle construct. These numbers are triangulated from the one hard public consumable price ($440 for eight experiments, so $55 per experiment for plasticware), published CRO phase durations, and standard contract labour economics. Treat every line as unverified until a real RFQ comes back.

Route A — custom mould plus contract casting, twenty units

Line item	Modelled estimate (unverified)
Custom mould design and cleanroom tooling (one-time NRE)	$8,000 – $25,000
Cells (primary human myoblasts, purchased)	$1,500 – $5,000
Culture, casting and maturation labour, ~4–6 weeks including electrical stimulation	$10,000 – $25,000
Force QC and acceptance testing across 20 units	$3,000 – $8,000
Cold-chain packaging and priority shipping	$500 – $1,500
First article total, NRE amortised into run one	~$25,000 – $60,000, or $1,250 – $3,000 per unit
Repeat runs, mould already exists	~$15,000 – $35,000, or $750 – $1,750 per unit

Lead time. Four to six weeks mould design and fabrication, plus two to four weeks cell expansion, plus two to three weeks casting and maturation, plus one week QC and shipping — roughly nine to fourteen weeks for a first article and five to eight weeks on repeat. That envelope is consistent with the published phase timings from one established provider (differentiation four to eight weeks, phenotyping study three to five weeks).

Route B — accept the vendor’s fixed geometry

If you can live with the existing post spacing and chamber geometry instead of a bespoke span and termination, the NRE disappears entirely and you are buying a stock plate cast to order. Cost collapses toward a few hundred dollars per unit and roughly four to six weeks. This is the option most buyers should price first, because the custom geometry is usually a preference rather than a requirement, and it is carrying most of the cost.

Route C — do it yourself

$440 of casting devices plus roughly $2,000 to $4,000 of cells and media gets a competent lab eight experiments’ worth of muscle. This is the price ceiling that constrains everything else. Any quote for finished muscle has to justify itself against a customer who could buy the plate for $440 and cast it themselves.

Being honest about that is the point. If you have a tissue culture technician, an incubator and eight weeks, Route C is very likely the right answer and you should take it. Routes A and B earn their premium only when you do not have those things, or when you need a geometry no plate provides, or when you need somebody else to hold a force acceptance criterion.

What to put in an RFQ

The difference between a comparable quote and an incomparable one is whether these are specified:

Construct geometry: length, cross-section, anchor type and spacing.
Cell source: primary or iPSC-derived, donor constraints, who supplies them.
Media condition during fusion and maintenance — this changes day-14 force by up to tenfold.
Post or anchor stiffness, if the device allows selection.
Stimulation regime: frequency, duty cycle, duration. Chronic stimulation is the maturation lever.
Force acceptance criterion: twitch or tetanic, in µN or specific force, measured on which day, by which method, with what pass rate across the batch.
Unit count and whether repeat runs are anticipated (this determines whether NRE amortises).
Delivery format: in the casting device, or removed. Live or fixed.
Who owns the mould design if NRE is paid.

The last point is the one that gets forgotten and is worth more than it looks on a repeat programme.

Our position

We broker this. We do not manufacture it, and any construct delivered through us is made by a named partner and labelled as partner-manufactured.

The honest summary of what a broker adds here: supply exists, it is fragmented across five or six organisations each holding one piece — cells, mould, casting, stimulation, QC, shipping — and none of them integrate. Someone has to write the specification, send it to several parties, normalise the answers and hold an acceptance criterion. That is the work. If you would rather do it yourself, the $440 device and the published force data above are most of what you need to start.

The one thing we cannot promise in advance is whether any supplier will contract to deliver a physical part with a force acceptance criterion rather than a report. That is a contractual question, not a scientific one, and it can only be answered by sending the RFQ. Send us the spec and we will find out.

Engineered skeletal muscle tissue: one supplier sells it, nobody specifies it