High density culture of bovine embryonic stem cell derived mesenchymal cells on edible scaffolds for structured cultivated meat
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Abstract
Developing structured cultivated meat requires integrated solutions that combine scalable cell sources with edible, food‑grade materials capable of supporting high density growth and differentiation. Here, we evaluate bovine mesenchymal stem cells derived from embryonic stem cells (ESC‑derived iMSCs) as a scalable adipogenic cell source and develop an integrated workflow combining these cells with edible plant‑based scaffolds for structured biomass generation. Cell identity and functionality were assessed using transcriptomic, morphological, gene expression, flow cytometric, and adipogenic differentiation analyses, in both adherent and suspension culture systems. In parallel, lentil, pea and soy-based scaffold formulations were screened for cell attachment, proliferation, and biomass accumulation. Soy‑based scaffolds supported uniform cell distribution and robust growth and outperformed lentil-based scaffolds. Under dynamic culture conditions, bovine iMSCs cultured on soy-based scaffolds achieved high‑density growth, showing biomass accumulation (cell wet weight/scaffold wet weight) reached an average cell wet weight to scaffold wet weight ratio of 15% within three days. Cultures demonstrated active glucose metabolism and retained adipogenic differentiation capacity, confirmed by lipid accumulation and positive oil red O staining. These findings demonstrate an integrated cell scaffold platform for rapid three ;dimensional biomass generation. This approach supports the development of a cell culture strategy for structured cultivated meat by combining defined cell sources with food‑grade scaffold technologies to improve scalability, structure, and nutritional relevance.
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Figure 7. Shear environment and mechanical properties of edible protein‑based scaffolds
The E-modulus measurements and texture profile analysis in Figure 7 are a nice addition to the paper — it's genuinely useful to know that soy scaffolds fall within a stiffness range reported to support MSC growth. A natural extension of this characterization would be to apply the same mechanical measurements to the pea and lentil scaffolds, which would help interpret the cell performance differences observed across scaffold types in Figure 9.
At the moment it's not clear whether the superior attachment and biomass accumulation on soy scaffolds reflects something intrinsic to soy protein chemistry, or whether the three scaffold types are producing mechanically distinct structures under identical fabrication conditions. These are commercially sourced …
Figure 7. Shear environment and mechanical properties of edible protein‑based scaffolds
The E-modulus measurements and texture profile analysis in Figure 7 are a nice addition to the paper — it's genuinely useful to know that soy scaffolds fall within a stiffness range reported to support MSC growth. A natural extension of this characterization would be to apply the same mechanical measurements to the pea and lentil scaffolds, which would help interpret the cell performance differences observed across scaffold types in Figure 9.
At the moment it's not clear whether the superior attachment and biomass accumulation on soy scaffolds reflects something intrinsic to soy protein chemistry, or whether the three scaffold types are producing mechanically distinct structures under identical fabrication conditions. These are commercially sourced food-grade protein powders — pea, lentil, and soy — that likely differ in gelation behavior, water holding capacity, and network-forming properties during curing, meaning identical fabrication protocols could plausibly yield scaffolds with different stiffness, porosity, or surface roughness. If lentil scaffolds turn out to have a substantially different E-modulus or pore structure under these conditions, that would be a really informative finding — it would give the field a mechanistic handle on why material choice matters and when the soy preference might or might not generalize to other cell types or fabrication contexts.
The paper also notes that a stiffness range of 35-60 kPa supports MSC culture, but this is currently only established for soy. Knowing whether pea and lentil fall within or outside this range would help readers understand whether the cell performance differences are likely to be mechanistically meaningful or more context-dependent. Given that the fabrication protocol and equipment are already in place, this feels like a characterization that would add a lot of interpretive value to an already interesting dataset.
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