Abstract: Abstract: We describe a robust human adult distal lung organoid method with a procedure for everting organoids to essentially turn them inside out. This then relocates the apical ACE2-expressing surfaces of cells to the organoid exterior, where they can then be easily infected by SARS-CoV-2 added to the tissue culture medium. Further, this method can be used for infection of any distal lung pathogen that infects apically. Alternatively, if a pathogen interacts basolaterally then eversion is not necessary, and the human adult distal lung organoids can be infected as is.

Abstract: Functional in vitro assays are provided for determining patient specific responsiveness to immunotherapy agents within a clinically actionable time frame.

Abstract: Functional in vitro assays are provided for determining patient specific responsiveness to immunotherapy agents within a clinically actionable time frame.

Abstract: Methods are provided for long term culture of mammalian intestinal cells. Cultures are initiated with fragments of mammalian intestinal tissue, which are then maintained embedded in a gel substrate that provides an air-liquid interface. Intestinal epithelium in cultures of the invention can be continuously grown for extended periods of time. Mammalian intestinal cells cultured by the methods of the invention recapitulate features of intestinal growth in vivo.

Abstract: Functional in vitro assays are provided for determining patient specific responsiveness to immunotherapy agents within a clinically actionable time frame.

Abstract: Methods are provided for long term culture of mammalian intestinal cells. Cultures are initiated with fragments of mammalian intestinal tissue, which are then maintained embedded in a gel substrate that provides an air-liquid interface. Intestinal epithelium in cultures of the invention can be continuously grown for extended periods of time. Mammalian intestinal cells cultured by the methods of the invention recapitulate features of intestinal growth in vivo.

Abstract: Methods are provided for long term culture of mammalian intestinal cells. Cultures are initiated with fragments of mammalian intestinal tissue, which are then maintained embedded in a gel substrate that provides an air-liquid interface. Intestinal epithelium in cultures of the invention can be continuously grown for extended periods of time. Mammalian intestinal cells cultured by the methods of the invention recapitulate features of intestinal growth in vivo.

Abstract: Culture systems and methods for long term culture of mammalian tissues are provided. Tissues include but are not limited to lung alveolar tissue, stomach tissue, pancreas tissue, bladder tissue, liver tissue, and kidney tissue. Cultures are initiated with fragments of mammalian tissue, which are then cultured embedded in a gel substrate that provides an air-liquid interface. Cultured explants of the invention can be continuously grown in culture for a year or more, while maintaining features of the tissue including prolonged tissue expansion with proliferation, multilineage differentiation, and recapitulation of cellular and tissue ultrastructure.

Abstract: The present invention provides methods of modulating angiogenesis in an individual, the methods generally involving administering to an individual an agent that modulates the expression or activity of Egfl7, where an agonist of Egfl7, including an Egfl7 polypeptide, decreases angiogenesis. In one embodiment, the methods of the invention relate to inhibiting pathological angiogenesis by enhancing activity of Egfl7, which method may be carried out in conjunction with administration of one or more other anti-angiogenic agents.

Abstract: The present invention provides methods of modulating angiogenesis in an individual, the methods generally involving administering to an individual an agent that modulates the expression or activity of GPR124. In one embodiment, the methods of the invention relate to inhibiting pathological angiogenesis by decreasing activity of GPR124, which method may be carried out in conjunction with administration of one or more other anti-angiogenic agents.

Abstract: Methods and compositions are provided for the protection of normal cells from cytoreductive therapy that target proliferating cells, by administering an inhibitor of Wnt signaling pathways. Wnt signaling is critically important for homeostasis of the epithelial lining of the adult intestine and other proliferating normal adult tissues.

Abstract: Methods are provided for long term culture of mammalian intestinal cells. Cultures are initiated with fragments of mammalian intestinal tissue, which are then maintained embedded in a gel substrate that provides an air-liquid interface. Intestinal epithelium in cultures of the invention can be continuously grown for extended periods of time. Mammalian intestinal cells cultured by the methods of the invention recapitulate features of intestinal growth in vivo.

Abstract: The present invention provides methods of modulating angiogenesis in an individual, the methods generally involving administering to an individual an agent that modulates the expression or activity of Egfl7, where an agonist of Egfl7, including an Egfl7 polypeptide, decreases angiogenesis. In one embodiment, the methods of the invention relate to inhibiting pathological angiogenesis by enhancing activity of Egfl7, which method may be carried out in conjunction with administration of one or more other anti-angiogenic agents.