CD204-positive M2-like tumor-associated macrophages increase migration of gastric cancer cells by upregulating miR-210 to reduce NTN4 expression.

Background: Tumor-associated macrophages (TAMs) are the predominant immune cells in the tumor microenvironment and portend poor prognosis. However, the molecular mechanisms underlying the tumor promotion of TAMs have not been fully elucidated.

Methods: Coculture of gastric cancer cells with U937 cells was performed to investigate the impact of TAMs on cancer cell behavior.

Antifibrotic role of PGC-1α-siRNA against TGF-β1-induced renal interstitial fibrosis.

Peroxisome proliferator-activated receptor coactivator-1 alpha (PGC-1α) is a transcriptional coactivator that regulates energy metabolism and mitochondrial biogenesis. Recently, mitochondrial dysfunction has been indicated as an established risk factor for the development of renal fibrosis. However, whether PGC-1α is involved in the pathogenesis of renal fibrosis is unknown.

Tumor-Associated Macrophages Promote Epigenetic Silencing of Gelsolin through DNA Methyltransferase 1 in Gastric Cancer Cells.

Epigenetic repression of the tumor suppressor gelsolin (GSN) is frequently observed in cancers. Chronic inflammation can promote tumor progression via aberrant DNA methylation. In this study, we investigated the role of tumor-associated macrophages (TAMs) in DNA methylation of the gene during gastric cancer progression.

Duodenal angiosarcoma: an unusual cause of severe gastrointestinal bleeding.

Angiosarcoma is a rare soft-tissue neoplasm that occurs most often in the skin and the subcutaneous tissues but very rarely in the gastrointestinal tract. We report a case of primary intestinal angiosarcoma with severe gastrointestinal bleeding. This patient was referred to our institute for shock with tarry-bloody stool and severe anemia.