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Prof. Sibson together with her co-applicants Prof. Anthony, Dr Campbell and Prof. Middleton have now been awarded a second MRC DPFS grant, for £3.3 million, to acquire further preclinical data to support the case for clinical translation, to develop the mutTNF production for human use and to undertake pre-clinical toxicology.

Histology and magnetic resonance images from a mouse with breast cancer brain metastases, injected intravenously 2 hours previously with a TNFR1-selective mutant TNF protein. 

3 items in the picture:

Cresyl violet stained brain section showing location of a micrometastasis. 

Adjacent brain section stained with Hanker-Yates demonstrates HRP extravasation (brown staining) and, hence, BBB breakdown selectively at the site of metastasis. 

Post-contrast (gadolinium-DTPA) image from the same mouse showing extravasation of contrast at the metastatic site (hyperintensity) confirming local BBB breakdown. Note, the BBB remains intact in the rest of the brain.
Figure caption: Histology and magnetic resonance images from a mouse with breast cancer brain metastases, injected intravenously 2 hours previously with a TNFR1-selective mutant TNF protein. (A) Cresyl violet stained brain section showing location of a micrometastasis (boxed region and inset). (B) Adjacent brain section stained with Hanker-Yates demonstrates HRP extravasation (brown staining) and, hence, BBB breakdown selectively at the site of metastasis. (C) Post-contrast (gadolinium-DTPA) image from the same mouse showing extravasation of contrast at the metastatic site (hyperintensity) confirming local BBB breakdown. Note, the BBB remains intact in the rest of the brain.
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