The advent of the gastric organoid culture system has provided a new model to emulate native epithelial tissue in vitro. Gastric organoids grow from isolated epithelial stem cells and develop into three dimensional structures that can be used to study host physiology. Here we describe current laboratory protocols for growing gastric organoids and the microinjection of pathogens such as Helicobacter pylori into the lumen of gastric organoids in order to study the cellular response following infection.
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http://dx.doi.org/10.1007/978-1-4939-7604-1_8 | DOI Listing |
Diffuse gastric adenocarcinoma (DGAC) is an aggressive malignancy with limited therapeutic options, poor prognosis, and poorly understood biology. CRACD, an actin polymerization regulator, is often inactivated in gastric cancer, including DGAC. We found that genetic engineering of murine gastric organoids with ablation combined with mutation and loss induced aberrant cell plasticity, hyperproliferation, and hypermucinosis, the features that recapitulate DGAC transcriptional signatures.
View Article and Find Full Text PDFJ Immunother Cancer
January 2025
Department of General Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
Background: Sialic acid-binding immunoglobulin-like lectins (SIGLECs) are widely expressed on immune cell surfaces, play an important role in maintaining immune homeostasis and regulating inflammatory responses, and are increasingly emerging as potential targets for tumor immunotherapy. However, the expression profile and crucial role of SIGLEC11 in gastric cancer (GC) remain unclear. This study aimed to elucidate the prognostic relevance of SIGLEC11 expression and its role in the immune microenvironment in patients with GC.
View Article and Find Full Text PDFBiomed Pharmacother
January 2025
Department of Biology, University of Naples Federico II, Naples, Italy; Biogem, Istituto di Biologia e Genetica Molecolare, Ariano Irpino, AV, Italy.
Intracellular Ca homeostasis dysregulation, through the modulation of calcium permeable ion channels and transporters, is gaining attention in cancer research as an apoptosis evasion mechanism. Recently, we highlighted a prognostic role for several calcium permeable channels. Among them, here, we focused on the plasma membrane bidirectional Na/Ca exchanger SLC8A1.
View Article and Find Full Text PDFAdv Sci (Weinh)
December 2024
Department of General Surgery, Shanghai Key Laboratory of Gastric Neoplasms, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
Poor response to 5-fluorouracil (5-FU) remains an obstacle in the treatment of gastric cancer (GC). Super enhancers (SEs) are crucial for determining tumor cell survival under drug pressure. SE landscapes related to 5-FU-resistance are mapped to GC using chromatin immunoprecipitation-sequencing (ChIP-Seq).
View Article and Find Full Text PDFCell Regen
December 2024
Guangzhou National Laboratory, Guangzhou, 510005, China.
Gastric cancer is one of the most common malignancies with poor prognosis. The use of organoids to simulate gastric cancer has rapidly developed over the past several years. Patient-derived gastric cancer organoids serve as in vitro models that closely mimics donor characteristics, offering new opportunities for both basic and applied research.
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