Journal
JOURNAL OF MATERIALS CHEMISTRY B
Volume 6, Issue 32, Pages 5282-5289Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tb00974k
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Funding
- National Natural Science Foundation of China [21374026, 51573032, 51573031]
- Science Fund for Creative Research Groups of the National Natural Science Foundation of China [11621505]
- CAS Key Research Program for Frontier Sciences [QYZDJ-SSW-SLH022]
- Key Project of Chinese Academy of Sciences in Cooperation with Foreign Enterprises [GJHZ1541]
- CAS Interdisciplinary Innovation Team
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Tumor metastasis as the most common reason of death from cancer has always been a great challenge in both clinical and scientific research, where angiogenesis plays a necessary role. Herein, we report an extracellularly transformable nanomaterial for in situ construction of defensive networks on interaction with vascular endothelial growth factor (VEGF) for anti-angiogenic therapy of tumor. The fibrous networks exhibit transformation-enhanced accumulation and retention (TEAR) effects (over 72 h), and bind and intercept cell-secreted VEGF over particulate and molecular anti-angiogenic agents with high efficiency, leading to anti-angiogenesis. This study demonstrates that angiogenesis is positively related to tumor growth as well as tumor metastasis; the anti-angiogenic therapy inhibits tumor metastasis with an inhibition rate of 65.9%. In addition, this extracellular strategy of transformation may be utilized to bind huge amounts of cell-secreted biomolecules/factors or receptors on cell surfaces and inhibit their functionalities for cancer therapy.
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