Modulation of the tumour promoting functions of cancer associated fibroblasts by phosphodiesterase type 5 inhibition increases the efficacy of chemotherapy in human preclinical models of esophageal adenocarcinoma

These are whole-slide digital pathology images of esophageal adenocarcinoma (EAC) patient-derived xenograft models. EAC biopsy specimens were cultured in vitro before implanting into immuno-deficient mice. Mice were then divided into the following treatment groups and treated with combinations of chemotherapy and PDE5 inhibitors as follows:

1. Untreated
2. Epirubicin + Cisplatin + Capecitabine (ECX)
3. ECX + Vardenafil
4. ECX + Tadalafil

All whole slide images are in Olympus .vsi format and can be opened using the BioFormats library in QuPath. We have also included classifiers and scripts for performing the digital pathology analysis in QuPath, and information to link each mouse with treatment groups and corresponding whole slide images.

File metadata:

classifiers.zip - Folder containing pixel classifiers used for segmentation of IHC stains. These classifiers are to be important into QuPath for the respective analysis of Periostin (POSTN) and alpha Smooth Muscle Actin (SMA) staining using the included Groovy scripts in the scripts folder.

SMA.zip - Folder containing whole slide images of mouse patient-derived xenograft tumours in .vsi format (Olympus VS110). Immunohistochemistry with anti-alpha Smooth Muscle Actin antibody.
POSTN.zip - Folder containing whole slide images of mouse patient-derived xenograft tumours in .vsi format (Olympus VS110). Immunohistochemistry with anti-Periostin antibody.

scripts.zip - Folder containing all groovy scripts used in QuPath for tissue detection (Whole Section Tissue Detection.groovy), and segmentation of POSTN (POSTN Quantification Mice.groovy) and SMA staining tissue areas (SMA Quantification Mice.groovy).

POSTN.xlsx - Data on the mice for which anti-POSTN IHC is available. Column names as follows:
Image: file name (corresponding to .vsi file).
Mouse_ID: Mouse identifier.
Treatment: Treatment administered. ECX - Epirubicin, Cisplatin and Capecitabine.
POSTN_Area: Total measured area of POSTN+ tissue in the tissue section (in um^2).
Total_Area: Total area of the tissue section (in um^2).
percentage_POSTN: Percentage of total tissue area that is stained with POSTN (%).

SMA.xlsx - Data on the mice for which anti-SMA IHC is available. Column names as follows:
Image: file name (corresponding to .vsi file).
Mouse_ID: Mouse identifier.
Treatment: Treatment administered. ECX - Epirubicin, Cisplatin and Capecitabine.
SMA_Area: Total measured area of SMA+ tissue in the tissue section (in um^2).
Total_Area: Total area of the tissue section (in um^2).
percentage_SMA: Percentage of total tissue area that is stained with SMA (%).