The Cellular Memory Disc of Reprogrammed Cells

Abstract

The crucial facts underlying the low efficiency of cellular reprogramming are poorly understood. Cellular reprogramming occurs in nuclear transfer, induced pluripotent stem cell (iPSC) formation, cell fusion, and lineage-switching experiments. Despite these advances, there are three fundamental problems to be addressed: (1) the majority of cells cannot be reprogrammed, (2) the efficiency of reprogramming cells is usually low, and (3) the reprogrammed cells developed from a patient's own cells activate immune responses. These shortcomings present major obstacles for using reprogramming approaches in customised cell therapy. In this Perspective, the author synthesises past and present observations in the field of cellular reprogramming to propose a theoretical picture of the cellular memory disc. The current hypothesis is that all cells undergo an endogenous and exogenous holographic memorisation such that parts of the cellular memory dramatically decrease the efficiency of reprogramming cells, act like a barrier against reprogramming in the majority of cells, and activate immune responses. Accordingly, the focus of this review is mainly to describe the cellular memory disc (CMD). Based on the present theory, cellular memory includes three parts: a reprogramming-resistance memory (RRM), a switch-promoting memory (SPM) and a culture-induced memory (CIM). The cellular memory arises genetically, epigenetically and non-genetically and affects cellular behaviours. [corrected].

Cell Reprogramming: Mirage or Reality?

“…It will be very interesting to identify the main hurdle that is holding legal, ethical and efficient clinical cell therapy back. As an answer to this question, the author has developed the cell memory disc (CMD) theory [60][61][62]. Based on the new version, which is also called the 'every cell theory' , this issue may be closely related to CMD fluidity.…”

“…They are two dissimilar faces of the same coin. Every CMD in an organism gradually develops from various memorized layers of genetic, epigenetic, and non-genetic information [see Glossary] [60]. The information carried by the CMD has a unique architecture at any given moment, a feature that is called CMD fluidity.…”

Cell memory‐based therapy

“…In theory, the CMD stores information holographically . Based on a Nature paper by the Nobel laureate physicist Dennis Gabor , each part or subpart of a hologram contains all of the information possessed by the entire hologram .…”

“…The cell memory disc (CMD) , as a holistic picture of the cell, presents a dynamic, multi‐layered system of holographic information storage. The CMD develops gradually over a cell's lifetime and determines all cellular behaviours.…”