Characterization of interconnectivity of gelatin methacrylate hydrogels using photoacoustic imaging

Autor:	Wenxiu Zhao, Haibo Yu, Zhixing Ge, Xiaoduo Wang, Yuzhao Zhang, Yangdong Wen, Hao Luo, Lianqing Liu, Wen Jung Li
Rok vydání:	2022
Předmět:	Photoacoustic Techniques HEK293 Cells Tissue Engineering Biomedical Engineering Gelatin Humans Methacrylates Hydrogels Bioengineering General Chemistry Biochemistry
Zdroj:	Lab on a Chip. 22:727-732
ISSN:	1473-0189 1473-0197
DOI:	10.1039/d1lc00967b
Popis:	Hydrogels can provide a three-dimensional microenvironment for cells and thus serve as an extracellular matrix in a biofabrication process. The properties of hydrogels, such as their porosity and mechanical properties, significantly influence the cell growth. However, there is still a lack of effective methods for characterizing the hydrogel structure noninvasively. Herein, a photoacoustic (PA) imaging-based method is proposed for the characterization of gelatin methacrylate (GelMA) hydrogels. Owing to their high PA contrast, red blood cells (RBCs) are included as mediators in the GelMA hydrogel to analyze its pore distribution. The interconnectivity of the pores is further analyzed through the lysis of RBCs. The diffusion of the RBC lysis buffer in the GelMA is consistent with the trend observed in simulations. The analyzed vitality of HEK293 cells in different GelMA hydrogels reveals that understanding the diffusion of solutes (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8624c464ebb05725550d030c07c1ef13 https://doi.org/10.1039/d1lc00967b Zobrazit plný text záznamu