Totipotency: what it is and what it is not

Area of Science:

• Developmental Biology
• Cellular Biology
• Bioethics

Background:

• Significant confusion exists regarding biological totipotency in scientific and public spheres.
• Ethical controversies can impede scientific research and the development of medical therapies.
• Clarifying totipotency is crucial to reduce unnecessary debate and research barriers.

Purpose of the Study:

• To define and clarify the concept of biological totipotency.
• To address existing confusions in scientific and non-scientific literature.
• To propose a new term, "plenipotent," to resolve ambiguity.

Main Methods:

• Conceptual analysis of totipotency.
• Review of scientific and non-scientific literature on totipotency.
• Discussion of experimental determination and implications of twinning.

Main Results:

• Identified widespread misunderstanding of totipotency.
• Proposed the term "plenipotent" to distinguish specific developmental potentials.
• Highlighted the essential role of oocyte-derived cytoplasm in totipotency.

Conclusions:

• Clear definitions are needed to avoid ethical controversies in developmental biology research.
• The proposed term "plenipotent" can enhance precision in discussing cell developmental potential.
• Understanding totipotency and related concepts is vital for advancing regenerative medicine.