§01 — Homeostasis Medicine
Restore thebalance.
Every living system fights, second by second, to hold a steady internal state. That effort is homeostasis — and at its centre sits a single transporter protein: Sialin.
§02 — The Idea
A new lens on medicine: don't fight the body — restore its equilibrium.
Homeostasis is the self-regulating process by which a living system stays stable while continuously adapting to a changing environment — the basis of survival.
Conventional care often suppresses a symptom. Homeostasis Medicine asks a different question — what pulled the system out of balance, and how do we help it return?
The answer the lab kept arriving at was a pathway hiding in plain sight: salivary nitrate, converted to nitrite and then to nitric oxide, governed by a transporter named Sialin.
Fig. 02 — Sialin drives the positive-feedback loop that sustains nitric-oxide homeostasis across multiple systems.
§03 — The Regulator
Sialin — the body's nitrate transporter.
Sialin (gene SLC17A5) sits in the membranes of cells and their organelles. For years it read as a simple channel. This work reframed it as something larger: a master regulator that feeds the nitrate → nitrite → nitric-oxide pathway, sustaining NO when the body's usual machinery falters — in aging, hypoxia, and disease.
Fig. 03b — Downstream of Sialin: macrophage M2↑ / M1↓ rebalance · Signal Transduct Target Ther, 2025
Fig. 03 — Sialin transports nitrate across the membrane
§04 — The Key
Sialintide — the molecule that switches Sialin on.
If Sialin is the lock, Sialintide is the key. It is an engineered peptide that activates the Sialin channel — across the cell membrane and inside mitochondria and the Golgi — nudging the system back toward balance. It was built by fusing two decades of Sialin biology with AI-driven molecular design.
Fig. 04 — Sialintide activates Sialin
§05 — The Proof
Twenty-two years, one throughline.
This is not a single paper. It is a continuous research program — from the first observations in 2003, to the landmark 2012 PNAS identification of Sialin, through a chain of work in the Journal of Dental Research, Bone Research, and Nature Communications.
Research timeline
Selected publications
From the Beijing Laboratory of Oral Health and the team of Academician Wang Songling — originator of Homeostasis Medicine and discoverer of the Sialin nitrate transporter.
§06 — What Balance Unlocks
One regulator. Many systems.
Because homeostasis is shared machinery, restoring it ripples outward. The same Sialin–nitrate–NO axis appears across the body — explored in peer-reviewed studies spanning oral, neural, cardiovascular, immune-metabolic, skeletal and digestive health.
Select a system to read the evidence
Hover or focus a marker to see how restoring Sialin activity supports each system.
§07 — From research to application
The first place this science went.
One early application of Sialintide is an oral-care rinse that pairs it with a recombinant enamel-matrix protein — to calm, and to rebuild — moving beyond physical plugging toward regulation and tissue regeneration.
The problem is hydraulic, not just neural
When enamel wears or the gum line recedes, microscopic dentinal tubules open — widening from roughly 4 µm toward 8 µm. Fluid flow through them rises about sixteen-fold, and it is that movement, not the nerve itself, that fires the sharp pain of sensitivity. So the lasting answer isn't numbing the nerve — it's the tubule.
Fig. 05 — dentinal tubules open as enamel wears or the gum line recedes
Regulate, then rebuild
Sialintide activates Sialin to help restore oral homeostasis — rebalancing the microbiome, immune tone and metabolism without killing bacteria. A recombinant enamel-matrix protein then encourages reparative dentin and helps seal the open tubules — a structural repair rather than a temporary plug.
Fig. 06 — reparative dentin seals the open tubules — structural repair, not a plug
Calms the nerve and stabilises the tissue — fast relief.
Activates pulp stem cells to regenerate dentin and seal the tubules.
Don't just plug the tubules — restore homeostasis.
Sialinbalance is a research-communication platform.