Cell proliferation and carcinogenesis may share a common basis of permeable plasma membrane clusters

Our plain-English summary of Cell proliferation and carcinogenesis may share a common basis of permeable plasma membrane clusters, by J.A. Beech (Medical Hypotheses, 1992).

The study

• Author: J.A. Beech
• Journal: Medical Hypotheses
• Published: 1992;38(3):208-14
• Cited by: 2 articles, as counted by NIH iCite
• Read it: PubMed · Publisher

Abstract

Wound potentials increase the surface potential of exposed areas of nearby cells. In these cells, soluble cytoplasmic bases are assumed gradually to move nearer the exposed area. Acidic molecules on the cell surface migrate to points opposite the bases. The image-charged species are mutually attracted to form transmembrane clusters. At clusters, membrane permeability increases and the cell is stimulated to cycle. When the wound heals, its clusters disperse, leaving a small 'permanent' residuum. Permanent clusters initiate cells to malignancy. They have (or develop) lipophilic molecules on both surfaces that help fix them in the membrane. Exposed cells contaminated with polycyclic aromatic hydrocarbon carcinogens (PAH) readily form permanent clusters. At mitosis, clusters on parental plasma membrane pass with that membrane to a daughter cell. Promotion results from many short-term or a single long-term exposure of initiated membranes to abnormal surface charge. Permanent clusters increase on the membrane after repeated wounding, proximity of charged foreign bodies like plastic film or asbestos, or oxidation of surface molecules. Progression requires acceleration of cluster growth so the daughter cell membranes become as leaky at maturity as was the parent membrane. One mechanism suggested involves reversible phosphorylation by membrane-bound kinases; another involves attraction of a basic protein (p36) to the membrane.

In plain English

In this hypothesis paper, the author proposed a theory of how cancer develops, reporting no new experiments, measurements or patient data. The author suggested that electrical currents from wounds alter the charge on nearby cells, drawing charged molecules into clusters spanning the cell membrane. There, the author proposed, membranes become more permeable and cells are stimulated to divide. After healing, most clusters were said to disperse, leaving a small 'permanent' remainder that daughter cells inherit, which the author linked to cancer's start. Cells exposed to abnormal surface charge and contaminated with carcinogenic polycyclic aromatic hydrocarbons were proposed to form such clusters readily. Repeated wounding, oxidation, and nearby charged foreign bodies such as plastic film or asbestos were proposed to increase them. On asbestos, the author suggested fibers may raise cell-surface negative charge through chemical oxidation and physical closeness. The author speculated that cancer is an aberration of normal repair that stimulates cells near wounds to regenerate. The author attributed cancer's starting step to inherited membrane clusters, not discussing genetic mechanisms there, but called the hypothesis compatible with oncogenes.

We wrote this plain-English summary from the full article with the help of AI, and a second AI model checked each sentence against the article. It is not the authors' wording; the abstract and the article are their own account.

What the study did and found

• Design: Theoretical hypothesis paper (no original data), extending the author's earlier speculations
• Who was studied: No study population; no people, animals or cells were studied
• Exposure: No exposure was measured. The author proposed that asbestos fibers may increase the negative charge of target cell surfaces through chemical oxidation and physical closeness (the article prints 'negatively')
• Main results:
  • Proposed in the hypothesis, not a measured finding: at membrane clusters, permeability increases and the cell is stimulated to divide
  • Proposed, not measured: when a wound heals, its clusters disperse but leave a small 'permanent' remainder
  • Proposed, not measured: clusters on the parent cell membrane pass to a daughter cell at cell division
  • Proposed, not measured: cells exposed to abnormal surface charge and contaminated with carcinogenic polycyclic aromatic hydrocarbons readily form permanent clusters
  • Proposed, not measured: permanent clusters increase after repeated wounding, nearness of charged foreign bodies such as plastic film or asbestos, or oxidation of surface molecules
  • The author ascribed initiation of cancer to epigenetic inheritance of membrane clusters or leakiness
  • The author described the hypothesis as compatible with oncogenes and with enhanced expression of proto-oncogene products
• The authors' conclusion: The author speculated that malignancy is an aberration of a normal repair mechanism that stimulates cells near wounds to regenerate
• Limitations the authors state:
  • In discussing initiation, the author states that genetic mechanisms are not discussed
  • The author acknowledges that other mechanisms of progression, such as cooperation between ras and myc oncoproteins, are also likely

Topics

Medical terms in this study, explained in our Lexicon: Carcinogenesis.

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