Breakthrough Tracker record

Glud1 suppression supports roughly 500-fold functional mouse stem-cell expansion

Michihiro Hashimoto and collaborators report that inhibiting glutamate dehydrogenase 1 preserves self-renewing hematopoietic stem cells during division and produces approximately 500-fold expansion of functional mouse HSCs over 30 days under conventional culture conditions.

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Stable ID: biology-glud1-mouse-hsc-expansion-2026
Revision: biology-glud1-mouse-hsc-expansion-2026.v1
Field: Biology · Hematopoietic stem-cell biology and metabolism
Evidence: Tier 1 · Peer reviewed: Yes
Record state: Current · Peer-reviewed preclinical result
Last checked: 2026-09-07

AI role

No substantive AI role was disclosed in the inspected journal record.

Record details

Problem or result: Metabolic control of ex vivo hematopoietic stem-cell self-renewal during division
Authors: Michihiro Hashimoto, Michie Uchikawa, Yuichiro Arima and collaborators
Institutions: Kumamoto University; University of Tokyo; Tokyo Women's Medical University; Chinese Academy of Medical Sciences; KAKETSUKEN
Result date: Published September 5, 2026

Why it matters

Sustaining functional HSC self-renewal during culture is a major regenerative-medicine bottleneck. The study identifies a metabolic lever linked to robust JAK2–STAT signaling rather than only another growth-factor cocktail.

Limits

The experiments are murine and ex vivo, not a demonstrated human therapy. Other HSC-expansion methods predate this work, so the novelty is the Glud1-linked mechanism and culture result, not first-ever expansion. Related patent applications and KAKETSUKEN-linked funding/employment are disclosed.

Sources

Primary: Nature Communications, Glud1 suppression and HSC self-renewal

Correction and revision history

2026-09-07 — Added after primary-source, scope, status, AI-role and limitation review.

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