Nerves and blood vessels are present in most organs and
are indispensable
for their function and homeostasis. Within these organs, neurovascular
(NV) tissue forms congruent patterns and establishes vital interactions.
Several human pathologies, including diabetes type II, produce NV
disruptions with serious consequences that are complicated to study
using animal models. Complex in vitro organ platforms, with neural
and vascular supply, allow the investigation of such interactions,
whether in a normal or pathological context, in an affordable, simple,
and direct manner. To date, a few in vitro models contain NV tissue,
and most strategies report models with nonbiomimetic representations
of the native environment. To this end, we have established here an
NV platform that contains mature vasculature and neural tissue, composed
of human microvascular endothelial cells (HMVECs), induced pluripotent
stem cell (iPSCs)-derived sensory neurons, and primary rat Schwann
cells (SCs) within a fibrin-embedded polymeric scaffold. First, we
show that SCs can induce the formation of and stabilize vascular networks
to the same degree as the traditional and more thoroughly studied
human dermal fibroblasts (HDFs). We also show that through SC prepatterning,
we are able to control vessel orientation. Using our NV platform,
we demonstrate the concomitant formation of three-dimensional neural
and vascular tissue, and the influence of different medium formulations
and cell types on the NV tissue outcome. Finally, we propose a protocol
to form mature NV tissue, via the integration of independent neural
and vascular constituents. The platform described here provides a
versatile and advanced model for in vitro research of the NV axis.