Real-time physics-based simulation of mechanisms and systems

Benoit, Tuur; Moten, Sikandar; Lemmens, Yves

doi:10.1109/distra.2017.8167686

Cited by 5 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Heparin can bind with several growth factors (e.g., BDNF and FGF-2) and has been reported to express various binding abilities with different ECMs. 59 For example, heparin and RGD peptides promoted 25-fold higher neurite outgrowth compared to nonfunctionalized HA hydrogels. 24 Also, it has been reported that hyaluronan−heparin-collagen hydrogels reduced inflammatory reaction and supported cell survival after stroke in rodent models.…”

Section: Discussionmentioning

confidence: 99%

Differential Effects of Heparin and Hyaluronic Acid on Neural Patterning of Human Induced Pluripotent Stem Cells

Bejoy

Wang

Bijonowski

et al. 2018

ACS Biomater. Sci. Eng.

View full text Add to dashboard Cite

A lack of well-established animal models that can efficiently represent human brain pathology has led to the development of human induced pluripotent stem cell (hiPSC)-derived brain tissues. Brain organoids have enhanced our ability to understand the developing human brain and brain disorders (e.g., Schizophrenia, microcephaly), but the organoids still do not accurately recapitulate the anatomical organization of the human brain. Therefore, it is important to evaluate and optimize induction and signaling factors in order to engineer the next generation of brain organoids. In this study, the impact of hyaluronic acid (HA), a major brain extracellular matrix (ECM) component that interacts with cells through ligand-binding receptors, on the patterning of brain organoids from hiPSCs was evaluated. To mediate HA- binding capacity of signaling molecules, heparin was added in addition to HA or conjugated to HA to form hydrogels (with two different moduli). The neural cortical spheroids derived from hiPSCs were treated with either HA or heparin plus HA (Hep- HA) and were analyzed for ECM impacts on neural patterning. The results indicate that Hep-HA has a caudalizing effect on hiPSC-derived neural spheroids, in particular for stiff Hep-HA hydrogels. Wnt and Hippo/Yes-associated protein (YAP) signaling was modulated (using Wnt inhibitor IWP4 or actin disruption agent Cytochalasin D respectively) to understand the underlying mechanism. IWP4 and cytochalasin D promote forebrain identity. The results from this study should enhance the understanding of influence of biomimetic ECM factors for brain organoid generation.

show abstract

Section: Discussionmentioning

confidence: 99%