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231224s2015 xx |||||o 00| ||eng c |
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7 |
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|a 10.1021/la504959d
|2 doi
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|a eng
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1 |
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|a Heleg-Shabtai, Vered
|e verfasserin
|4 aut
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|a Gossypol-cross-linked boronic acid-modified hydrogels
|b a functional matrix for the controlled release of an anticancer drug
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|c 2015
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 01.03.2016
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|a Date Revised 25.11.2016
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Anticancer drug gossypol cross-links phenylboronic acid-modified acrylamide copolymer chains to form a hydrogel matrix. The hydrogel is dissociated in an acidic environment (pH 4.5), and its dissociation is enhanced in the presence of lactic acid (an α-hydroxy carboxylic acid) as compared to formic acid. The enhanced dissociation of the hydrogel by lactic acid is attributed to the effective separation of the boronate ester bridging groups through the formation of a stabilized complex between the boronic acid substituent and the lactic acid. Because lactic acid exists in cancer cells in elevated amounts and the cancer cells' environment is acidic, the cross-linked hydrogel represents a stimuli-responsive matrix for the controlled release of gossypol. The functionality is demonstrated and characterized by rheology and other spectroscopic means
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Antineoplastic Agents
|2 NLM
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|a Boronic Acids
|2 NLM
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|a Delayed-Action Preparations
|2 NLM
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|a Formates
|2 NLM
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|a Hydrogels
|2 NLM
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|a formic acid
|2 NLM
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|a 0YIW783RG1
|2 NLM
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|a Lactic Acid
|2 NLM
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|a Gossypol
|2 NLM
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|a Aizen, Ruth
|e verfasserin
|4 aut
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|a Orbach, Ron
|e verfasserin
|4 aut
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|a Aleman-Garcia, Miguel Angel
|e verfasserin
|4 aut
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|a Willner, Itamar
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 31(2015), 7 vom: 24. Feb., Seite 2237-42
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|x 1520-5827
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|g volume:31
|g year:2015
|g number:7
|g day:24
|g month:02
|g pages:2237-42
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