Clinicopathologic features, tumor immune microenvironment and genomic landscape of Epstein-Barr virus-associated intrahepatic cholangiocarcinoma.

Background & Aims: Little is known about Epstein-Barr virus (EBV)-associated intrahepatic cholangiocarcinoma (EBVaICC) because of its rarity. We aimed to comprehensively investigate the clinicopathology, tumor immune microenvironment (TIME) and genomic landscape of this entity in southern China.

Methods: We evaluated 303 intrahepatic cholangiocarcinomas (ICCs) using in situ hybridization for EBV.

The JAK2/STAT3 pathway is involved in the anti-melanoma effects of atractylenolide I.

In this study, we aimed to investigate the anti-melanoma effects and the JAK2/STAT3 pathway-related mechanism of action of atractylenolide I in human melanoma cells. Our results showed that atractylenolide I effectively reduced viability, induced apoptosis and inhibited migration of melanoma cells. Meanwhile, atractylenolide I decreased the protein expression levels of phospho-JAK2 and phospho-STAT3, and in turn downregulated the mRNA levels of STAT3-targeted genes, including Bcl-xL, MMP-2 and MMP-9.

Inhibiting STAT3 signaling is involved in the anti-melanoma effects of a herbal formula comprising Sophorae Flos and Lonicerae Japonicae Flos.

A herbal formula (SL) comprising Sophorae Flos and Lonicerae Japonicae Flos was traditionally used to treat melanoma. Constitutively active signal transducer and activator of transcription 3 (STAT3) has been proposed as a therapeutic target in melanoma. Here we investigated whether an ethanolic extract of SL (SLE) exerted anti-melanoma activities by inhibiting STAT3 signaling.

FTY720, a fungus metabolite, inhibits invasion ability of androgen-independent prostate cancer cells through inactivation of RhoA-GTPase.

The failure of controlling androgen-independent and metastatic prostate cancer growth is the main cause of death in prostate cancer patients. In this study, we have demonstrated evidence on the inhibitory effects of a fungus metabolite, FTY720, on the clonogenesity as well as invasion ability of androgen-independent prostate cancer cells. First, using colony forming assay, we found that FTY720 treatment led to decreased colony forming ability of androgen-independent prostate cancer cell lines DU145 and PC3, indicating its negative role on cancer cell survival.

Danshen prevents the occurrence of oxidative stress in the eye and aorta of diabetic rats without affecting the hyperglycemic state.

Oxidative stress has been implicated in the pathogenesis of diabetic complications. We have previously demonstrated the occurrence of oxidative stress in the eye and aorta but not in the kidney of diabetic rats. In the present study we have investigated the effects of danshen, a herb used in traditional Chinese medicine to treat ailments related to diabetic complications, on the onset of oxidative stress in the above tissues.

Alterations in antioxidant enzyme activities in the eyes, aorta and kidneys of diabetic rats relevant to the onset of oxidative stress.

Profound changes in antioxidant enzyme activities were observed in a number of vascular tissues during the development of streptozotocin-induced diabetes in rats. In the eyes, there was an increase in superoxide dismutase activity at week 4 of diabetes. However, no difference in superoxide dismutase activity was observed between the control and diabetic animals at week 8.

Distinct intragraft response pattern in relation to graft size in liver transplantation.

Background: The molecular mechanism of small-for-size graft injury remains unclear. The aim of this study is to investigate the gene expression pattern of acute phase response in relation to graft size in a rat-liver transplantation model.

Methods: A rat orthotopic liver transplantation model using 30%, 50%, and whole grafts was used.