Cancer

BackgroundPancreatic ductal adenocarcinoma (PDAC) is an aggressive cancer with short overall survival; the standard of care (SoC) is chemotherapy. Immunotherapies in development aim to remodel the stroma by depleting immunosuppressive cell types or using T-cell redirection to kill tumor cells. To date, none of these methods have improved overall survival beyond SoC. Next generation immunotherapies that employ histopathology and molecular subtyping1 for target and patient selection may succeed.

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Prostate cancer has few prognostic biomarkers, and differentiating between relapsing and nonrelapsing tumour can be challenging clinically. This study aims to investigate the hypothesis that β-catenin might be a potential biomarker for prostate tumour and could distinguish between aggressive tumours requiring radical intervention and those that have a good prognosis. It is thought to be a potential biomarker that can predict the clinical progression and prognosis of different kinds of tumors.

Bharat Jasani, BSc, PhD, MBChB, FRCPath. Qualifying with honours in Biochemistry (University of Glasgow,1965-1969), PhD in Experimental Pathology and MBChB (honours distinction in Pathology) (University of Birmingham, 1970-1973), Dr Jasani initiated his clinical and research training in Histopathology, at Wales National School of Medicine in 1977, achieving MRCPath (1989), FRCPath (1997), and a Specialist Consultant’s status in Histopathology (Immunohistochemistry) (1993); and Personal Chair in Oncological Pathology (2003).

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We herein report the treatment outcome of oropharyngeal squamous cell carcinoma (OPSCC) at Kyushu University Hospital, the total number of OPSCC cases, and changes in the proportion of human papilloma virus (HPV)-related carcinomas over time.We performed a retrospective analysis of 237 cases treated for OPSCC at Kyushu University Hospital between 2013 and 2019. We performed HPV-mRNA in situ hybridization and p16 immunohistochemistry.This study included 197 males (82.1%) and 40 females (17.9%).

Cancer-associated fibroblasts (CAFs), a compartment of the tumor microenvironment, were previously thought to be a uniform cell population that promotes cancer progression. However, recent studies have shown that CAFs are heterogeneous and that there are at least two types of CAFs, that is, cancer-promoting and -restraining CAFs. We previously identified Meflin as a candidate marker of cancer-restraining CAFs (rCAFs) in pancreatic ductal adenocarcinoma (PDAC). The precise nature of rCAFs, however, has remained elusive owing to a lack of understanding of their comprehensive gene signatures.

UPK2 exhibits excellent specificity for urothelial carcinoma (UC). UPK2 evaluation can be useful in making the correct diagnosis of UC. However, UPK2 detection by immunohistochemistry (IHC) has relatively low sensitivity. This paper aimed to compare the diagnostic sensitivity of RNAscope and IHC for evaluation of the UPK2 status in UC.Tissue blocks from 127 conventional bladder UCs, 45 variant bladder UCs, 24 upper tract UCs and 23 metastatic UCs were selected for this study. IHC and RNAscope were used to detect the UPK2 status in UCs.

Cervical cancer (CC) is one of the most common malignancies affecting female worldwide. Long non-coding RNAs (lncRNAs) are increasingly indicated as crucial participants and promising therapeutic targets in human cancers. The main objective of this study was to explore the functions and mechanism of LINC00885 in CC.RT-qPCR and western blot were used to detect RNA and protein levels.

Papillomaviruses exclusively infect stratified epithelial tissues and cause chronic infections. To achieve this, infected cells must remain in the epithelial basal layer alongside their uninfected neighbours for years or even decades. To examine how papillomaviruses achieve this, we used the in vivo MmuPV1 model of lesion formation and persistence. During early lesion formation, an increased cell density in the basal layer, as well as a delay in the infected cells commitment to differentiation was apparent in cells expressing MmuPV1 E6/E7 RNA.