Chemical editing of proteoglycan architecture.

Chemical editing of proteoglycan architecture.
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DOI:
10.1038/s41589-022-01023-5
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发表时间:
2022-06
影响因子:
14.8
通讯作者:
Huang, Mia L.
Huang, Mia L.
中科院分区:
生物学1区
文献类型:
--
作者:
O'Leary, Timothy R.;Critcher, Meg;Stephenson, Tesia N.;Yang, Xueyi;Hassan, Abdullah A.;Bartfield, Noah M.;Hawkins, Richard;Huang, Mia L.

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Proteoglycans are heterogeneous macromolecular glycoconjugates that orchestrate many important cellular processes. While much attention has focused on the poly-sulfated glycosaminoglycan chains that decorate proteoglycans, other important elements of their architecture, such as core proteins and membrane localization, have garnered less emphasis. Hence, comprehensive structure-function relationships that consider the replete proteoglycan architecture as glycoconjugates are limited. Here, we present an extensive approach to study proteoglycan structure and biology by fabricating defined semi-synthetic modular proteoglycans that can be tailored for cell surface display. The expression of proteoglycan core proteins with unnatural amino acids permits bioorthogonal click chemistry with functionalized glycosaminoglycans for methodical dissection of the parameters required for optimal binding and function of various proteoglycan-binding proteins. We demonstrate that these sophisticated materials can recapitulate the functions of native proteoglycan ectodomains in mouse embryonic stem cell differentiation and cancer cell spreading while permitting the analysis of the contributing architectural elements toward function.
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