Collagen Triple Helix Repeat Containing 1 (CTHRC1) in the Nervous System: Expression, Signaling Mechanisms, and Functional Implications

04/10/2026

AI Summary

CTHRC1 exerts context dependent effects in the nervous system, promoting Schwann cell proliferation, migration and myelination timing, and glioma invasive, treatment resistant phenotypes.
Human proteomics, mouse genetics and neuronal models link CTHRC1 to Alzheimer's disease phenotypes, but the cellular source is unresolved and CSF data are inconclusive.
Wnt, TGF β/Smad, PI3K/AKT and MAPK/ERK are candidate signalling mechanisms, but many studies use non neural models, limiting therapeutic and biomarker translation.

TL;DR (AI Generated)

Evidence from peripheral nerve, brain tumor, neurodegeneration, and regeneration models suggests that CTHRC1 may exert context-dependent effects across neural and stromal cell populations.

Human cortical proteomics, mouse-model studies, systems genetics, and a neuronal cell model associate CTHRC1 with Alzheimer's disease-related phenotypes, although bulk tissue does not identify the cellular source and a small cerebrospinal fluid cohort showed no significant change.

Basic summary

J Mol Neurosci. 2026 Oct 3;76(4):148. doi: 10.1007/s12031-026-02607-9.

ABSTRACT

Collagen triple helix repeat containing 1 (CTHRC1) is a secreted extracellular matrix (ECM)-associated protein involved in tissue remodeling, fibrosis, and cancer, but its functions in the nervous system remain incompletely defined. Evidence from peripheral nerve, brain tumor, neurodegeneration, and regeneration models suggests that CTHRC1 may exert context-dependent effects across neural and stromal cell populations. In Schwann cells, CTHRC1 regulates proliferation, migration, and the timing of myelination, whereas in glioma it promotes invasive behavior and treatment-resistant phenotypes. Human cortical proteomics, mouse-model studies, systems genetics, and a neuronal cell model associate CTHRC1 with Alzheimer’s disease-related phenotypes, although bulk tissue does not identify the cellular source and a small cerebrospinal fluid cohort showed no significant change. Temporally resolved single-cell analysis in zebrafish identified a transient cthrc1a-expressing fibroblast state required for coordinated inflammatory dynamics during regeneration; an equivalent mammalian mechanism has not been established. Evidence connecting CTHRC1 to synaptic regulation, neuroprotection, Parkinson’s disease, and cerebrovascular repair is still preliminary. Wnt, TGF-β/Smad, PI3K/AKT, and MAPK/ERK pathways provide candidate mechanisms, but many were characterized outside normal neural cells. This review critically evaluates the evidence by model and cell type and discusses biomarker and therapeutic prospects, including delivery, specificity, and safety constraints.

PMID:42828701 | DOI:10.1007/s12031-026-02607-9

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