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ZFIN ID: ZDB-PUB-171206-13
Macrophage-Dependent Cytoplasmic Transfer during Melanoma Invasion In Vivo
Roh-Johnson, M., Shah, A.N., Stonick, J.A., Poudel, K.R., Kargl, J., Yang, G.H., di Martino, J., Hernandez, R.E., Gast, C.E., Zarour, L.R., Antoku, S., Houghton, A.M., Bravo-Cordero, J.J., Wong, M.H., Condeelis, J., Moens, C.B.
Date: 2017
Source: Developmental Cell   43: 549-562.e6 (Journal)
Registered Authors: Hernandez, Rafael, Moens, Cecilia
Keywords: cell migration, contact-dependent cell communication, cytoplasmic transfer, macrophages, melanoma, mouse, tumor microenvironment, zebrafish
MeSH Terms:
  • Animals
  • Cell Communication/physiology*
  • Cell Line, Tumor
  • Cell Movement/physiology
  • Cytoplasm/metabolism
  • Macrophages/pathology*
  • Melanoma/pathology*
  • Mice
  • Neoplasm Invasiveness
  • Tumor Microenvironment/physiology*
  • Zebrafish
PubMed: 29207258 Full text @ Dev. Cell
FIGURES
ABSTRACT
Interactions between tumor cells and tumor-associated macrophages play critical roles in the initiation of tumor cell motility. To capture the cellular interactions of the tumor microenvironment with high-resolution imaging, we directly visualized tumor cells and their interactions with macrophages in zebrafish. Live imaging in zebrafish revealed that macrophages are dynamic, yet maintain sustained contact with tumor cells. In addition, the recruitment of macrophages to tumor cells promotes tumor cell dissemination. Using a Cre/LoxP strategy, we found that macrophages transfer cytoplasm to tumor cells in zebrafish and mouse models. Remarkably, macrophage cytoplasmic transfer correlated with melanoma cell dissemination. We further found that macrophages transfer cytoplasm to tumor cells upon cell contact in vitro. Thus, we present a model in which macrophage/tumor cell contact allows for the transfer of cytoplasmic molecules from macrophages to tumor cells corresponding to increased tumor cell motility and dissemination.
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