Localized Induction of Gene Expression in Embryonic Stem Cell Aggregates Using Holographic Optical Tweezers to Create Biochemical Gradients.
Localized Induction of Gene Expression in Embryonic Stem Cell Aggregates Using Holographic Optical Tweezers to Create Biochemical Gradients.
复制标题
DOI:
10.1007/s40883-019-00114-5
复制
发表时间:
2020
影响因子:
2.6
通讯作者:
Buttery LD
中科院分区:
文献类型:
--
作者:
Kirkham GR;Ware J;Upton T;Allen S;Shakesheff KM;Buttery LD
Three-dimensional (3D) cell models that mimic the structure and function of native tissues are enabling more detailed study of physiological and pathological mechanisms in vitro. We have previously demonstrated the ability to build and manipulate 3D multicellular microscopic structures using holographic optical tweezers (HOTs). Here, we show the construction of a precisely patterned 3D microenvironment and biochemical gradient model consisting of mouse embryoid bodies (mEBs) and polymer microparticles loaded with retinoic acid (RA), embedded in a hydrogel. We demonstrate discrete, zonal expression of the RA-inducible protein Stra8 within mEBs in response to release of RA from polymer microparticles, corresponding directly to the defined 3D positioning of the microparticles using HOTs. These results demonstrate the ability of this technology to create chemical microgradients at definable length scales and to elicit, with fidelity and precision, specific biological responses. This technique can be used in the study of in vitro microenvironments to enable new insights on 3D cell models, their cellular assembly, and the delivery of drug or biochemical molecules for engineering and interrogation of functional and morphogenic responses. Graphical abstract The online version of this article (10.1007/s40883-019-00114-5) contains supplementary material, which is available to authorized users.
登录
查看更多内容
影响因子:
2.5
作者:
Silva, Celso;Wood, Jennifer R.;Salvador, Lisa;Zhang, Zhibing;Kostetskii, Igor;Williams, Carmen J.;Strauss, Jerome F., III
通讯作者:
Strauss, Jerome F., III
影响因子:
14
作者:
Carpenedo, Richard L.;Bratt-Leal, Andrs M.;Marklein, Ross A.;Seaman, Scott A.;Bowen, Nathan J.;McDonald, John F.;McDevitt, Todd C.
通讯作者:
McDevitt, Todd C.
影响因子:
19
作者:
Huh, Dongeun;Hamilton, Geraldine A.;Ingber, Donald E.
通讯作者:
Ingber, Donald E.
影响因子:
46.9
作者:
Bhatia, Sangeeta N.;Ingber, Donald E.
通讯作者:
Ingber, Donald E.
影响因子:
46.9
作者:
Mahoney, MJ;Saltzman, WM
通讯作者:
Saltzman, WM