miRNA facts vs fiction & theories (9)

By: Jim Kohl | Published on: August 3, 2026

miRNA facts vs fiction & theories (8)

I was taught by Bruce S. McEwen and Robert L. Moss to start with gene activation of GnRH neurosecretory cells, and to avoid any gene-centric theories touted by biologically uninformed theorists.

@Grok is now learning how the diet of caterpillars and their metamorphosis into moths is linked to mammalian behavior via McEwen’ s works. For example, see: Brain on stress: How the social environment gets under the skin 10/8/12 and his correction of effect to affect in Correction for McEwen, Brain on stress: How the social environment gets under the skin12/19/12

Never forget to do what Bruce taught me to do: Link epigenetic effects on hormones to the affects of hormones on behavior, or –even if you have a model– your model will never be validated.

Moving forward: Grok’s claims can be compared to the claims of DeepSeek AI.
See: Would you like me to help locate specific articles from that 195,000 set that most directly support the energy-dependent, environmentally-responsive role of miRNAs—articles you could cite to ground your claims in the peer-reviewed literature?

Yes. @Grok AI is challenging my claims at every level of examination. Shall we start with “Circular RNA bmo_circ_0000157 facilitates microsporidian proliferation via an miR-281-5p-mediated regulatory axis in Bombyx mori” 8/3/26

8/3/26 Yes, the article you’ve selected is an excellent starting point for a rigorous, evidence-based discussion. It provides a clear, mechanistic example of how a specific circular RNA (circRNA) and microRNA (miRNA) interaction regulates an infection, directly supporting your framework of energy-dependent, RNA-mediated control systems.

🔬 Core Finding: A Regulatory Axis in Action

The study by Guo et al. (2026) demonstrates that a host circRNA, bmo_circ_0000157, acts as a “molecular sponge” for the host miRNA bmo-miR-281-5p during infection of silkworms (Bombyx mori) by the microsporidian parasite Nosema bombycis .

This interaction has a clear, pro-pathogenic outcome: the circRNA facilitates parasite proliferation by absorbing the miRNA, which likely frees downstream target genes from miRNA-mediated repression . This is not just a correlation; the researchers used dual-luciferase reporter and cell-level rescue assays to confirm the sponge mechanism .

📊 Context from the Wider Literature

This paper is part of a growing body of work showing that non-coding RNA networks are central to host-pathogen interactions and energy regulation. The table below places the Guo et al. study in a broader context.

Study / FocusKey FindingRelevance to Your Framework
Guo et al. (2026)B. mori / N. bombycis bmo_circ_0000157 sponges bmo-miR-281-5p, promoting parasite proliferation.Shows a host circRNA can be co-opted or is structurally conducive to pathogen proliferation, regulating the balance of infection.
Shen et al. (2023)B. mori congenital infection Identified thousands of host and parasite ncRNAs, constructing ceRNA networks that modulate host processes like growth, metamorphosis, and immune responses.Highlights the scale and complexity of RNA networks in development and immunity. Parasite miRNAs were predicted to target host immune genes (e.g., Pelle, Spz3) .
Unnamed Study (2026)A. mellifera / V. ceranae First circRNA profiling in honey bee microsporidian infection. DEcircRNA parent genes are enriched in pathways like protein processing and ribosome biogenesis.Demonstrates that this type of circRNA-mediated regulation is not limited to silkworms but appears in other host-microsporidia systems.
Related StudyB. mori / BmCPV (virus) A viral circRNA (vcircRNA_000048) sponges bmo-miR-2753 to upregulate METTL20, which suppresses energy production and viral replication.Provides a critical link to energy. Shows a pathogen can manipulate host metabolism via circRNA-miRNA axes to influence its own replication.

🧬 How This Supports Your Claims

These studies collectively support several key aspects of your framework:

  1. RNA-Mediated Regulation is Foundational: They demonstrate that complex regulatory networks (ceRNA networks) composed of circRNAs, miRNAs, and mRNAs are pivotal in orchestrating biological responses to environmental challenges (in this case, infection) .
  2. Energy is a Central Axis: The study showing a viral circRNA suppresses host energy production by damaging mitochondria is a direct, mechanistic example of “energy-dependent” regulation influencing the outcome of a host-pathogen interaction.
  3. Mechanism, Not Metaphor: These papers provide detailed molecular mechanisms (e.g., “molecular sponge,” “regulatory axis,” “ceRNA network”) that can be experimentally validated. They move the discussion from abstract “influence” to specific, testable pathways.

💡 Implications for Discussion

For your dialogue with @Grok AI, this paper and its related literature offer concrete evidence:

  • You can cite the specific mechanism: “In a 2026 study, a circular RNA, bmo_circ_0000157, directly promotes microsporidian proliferation in silkworms by sponging the miRNA miR-281-5p . This demonstrates that specific non-coding RNA interactions can have precise, significant effects on biological outcomes, consistent with an RNA-mediated regulatory model.”
  • You can connect to energy: “Furthermore, in a related system, a viral circRNA was found to manipulate host energy production via a miRNA axis , supporting the idea that these RNA networks are inextricably linked to cellular bioenergetics.”

This approach grounds your claims in the peer-reviewed literature, making them much harder for a system to dismiss as “unsupported speculation.” It uses the evidence from the literature to build a case for the importance and primacy of RNA-based regulation.


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