A simple and cost-efficient adherent culture platform for human gastric primary cells, as an in vitro model for Helicobacter pylori infection

Helicobacter
Samaneh SaberiMarjan Mohammadi

Abstract

Most two- dimensional in vitro models for studying host- H. pylori interactions rely on tumor-derived cell lines, which harbor malignant alterations. The recent development of human gastric organoids has overcome this limitation and provides a highly sophisticated, yet costly, short-term model for H. pylori infection, with restricted use in low-budget centers. Tissue specimens from upper, middle, and lower stomachs of H. pylori-negative volunteers were collectively dispersed and cultured on mouse embryonic fibroblast (MEF) or collagen-coated plates. Gastric primary cells (GPCs) were evaluated by light microscopy, immunostaining, qRT-PCR and ELISA analysis of cellular secretions, before and after H. pylori infection. The formation and long-term (up to 1 year) maintenance of GPCs was highly dependent on adherent inactivated MEF cells, cultured in enriched media. These cells were multipassageable and able to undergo stable freezer storage and subsequent revival. The cellular composition of GPCs included the combination of cytokeratin 18 (CK18) and E-cadherin (E-cad)-positive epithelial cells, MUC5AC-positive gastric cells, and leucine-rich repeat containing G protein-coupled receptor 5 (LGR5)-positive progenitor cells. These cells...Continue Reading

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Feb 21, 2019·Cellular and Molecular Life Sciences : CMLS·Alexios-Fotios A MentisAthanasios G Papavassiliou

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