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Expanding a lymph node, boosting a vaccine

For the first time, researchers from the&nbsp;Wyss Institute for Biologically Inspired Engineering at Harvard University,&nbsp;Harvard John A. Paulson School of Engineering and Applied Sciences&nbsp;(SEAS), and&nbsp;Genentech<u>, a member of the Roche Group,</u>&nbsp;found a way to enhance and extend LN expansion, and study how this phenomenon affects both the immune system and efficacy of vaccinations against tumors. While the oversized LNs maintained a normal tissue organization, they displayed altered&nbsp;mechanical features&nbsp;and hosted higher numbers of various immune cell types that commonly are involved in immune responses against pathogens and cancers. Importantly, &ldquo;jump-starting&rdquo; lymph node expansion prior to administering a traditional vaccine against a melanoma-specific model antigen led to more effective and sustained anti-tumor responses in mice.&nbsp; ....

Massachusetts Institute Of Technology , United States , Tufts University , Spaulding Rehabilitation Hospital , University Of Massachusetts Medical School , Boston University , Benjamin Freedman , Katherine Williams , Maxence Dellacherie , Shannon Turley , Christina Tringides , Hamza Ijaz , Joel Gutierrez Estupinan , Giovanni Bovone , Alberto Elosegui Artola , Benjamin Boettner , Shawn Kang , Miguel Sobral , Robertp Pinkas , Alexander Najibi , Donald Ingber , David Mooney , Harvard Johna Paulson School Of Engineering , Farber Cancer Institute , Arts Sciences , National Institutes Of Health Cancer Institute ,

A new glue, potentially also for you

<p>Hydrogels are already used in clinical practice for the delivery of drugs, and as lenses, bone cement, wound dressings, 3D scaffolds in tissue engineering and other applications. However, bonding different hydrogel polymers to one another has remained a challenge; yet it could enable numerous new applications. Now, Harvard Wyss and SEAS researchers pioneered a new method that uses a thin film of chitosan, a fibrous sugar-based material derived from the processed outer skeletons of shellfish, to make different hydrogels instantaneously and strongly stick to each other. They used their approach to locally protect and cool tissues, seal vascular injuries, and prevent unwanted &ldquo;surgical adhesions&rdquo; of internal body surfaces.&nbsp;</p>
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University Of Massachusetts Medical School , United States , Massachusetts Institute Of Technology , Spaulding Rehabilitation Hospital , Tufts University , Boston University , Dave Mooney , Juan Cintron Cruz , Benjamin Boettner , Daniel Kent , David Mooney , Robertp Pinkas , Mathew Lee , Phoebe Kwon , James Weaver , Donald Ingber , Benjamin Freedman , Haley Jeffers , Wyss Institute , National Institutes Of Health Institute On , Proceedings Of The National Academy Science , Founding Wyss Institute Core Faculty , Farber Cancer Institute , Method Of Research , Wyss Institute At Harvard University , Wyss Research ,