Researchers describe cell-in-cell phenomena in which one cell engulfs and sometimes consumes another. The study shows that cases of this behavior, including cell cannibalism, are widespread across the tree of life. The findings challenge the common perception that cell-in-cell events are largely restricted to cancer cells.
Rather, these events appear to be common across diverse organisms, from single-celled amoebas to complex multicellular animals.
The study argues that targeting cell-in-cell events as an approach to treating cancer should be abandoned, as these phenomena are not unique to malignancy. The study was conducted in collaboration with first author Stefania E. Kapsetaki, formerly with ASU and now a researcher at Tufts University, and Luis Cisneros, formerly with ASU and currently a researcher at Mayo Clinic.Cell-in-cell events have long been observed but remain poorly understood, especially outside the context of immune responses or cancer.
Obligate multicellular organisms are those that must exist in a multicellular form throughout their life cycle. They cannot survive or function as single cells. Examples include most animals and plants. Facultative multicellular organisms are organisms that can exist either as single cells or in a multicellular form depending on environmental conditions. For example, certain types of algae may live as single cells in some conditions but form multicellular colonies in others.
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