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Updated: Jun 23, 2026
08:45
Assessing Cellular Target Engagement by SHP2 (PTPN11) Phosphatase Inhibitors
Published on: July 17, 2020
Inhibition of protein tyrosine phosphatase PTP1B function ameliorates pathophysiological deficits in Rett Syndrome
Biorxiv : the Preprint Server for Biology
|June 22, 2026
Summary
Researchers identified protein tyrosine phosphatase 1B (PTP1B) as a therapeutic target for Rett syndrome (RTT). Inhibiting PTP1B improved motor, respiratory, and cardiac functions in mouse models, offering a new treatment strategy.
Area of Science:
- Neuroscience
- Pharmacology
- Genetics
Background:
- Rett syndrome (RTT) is a severe neurodevelopmental disorder with limited treatment options.
- Current therapies focus on symptom management, not underlying disease mechanisms.
Purpose of the Study:
- To identify and validate PTP1B as a mechanism-based therapeutic target for RTT.
- To evaluate the efficacy of selective PTP1B inhibitors in female mouse models of RTT.
Main Methods:
- Utilized selective, allosteric small-molecule inhibitors of PTP1B.
- Administered inhibitors to female murine models of RTT.
- Assessed phenotypic rescue through genetic ablation of PTP1B.
Main Results:
- PTP1B inhibitors localized to key brain regions affected in RTT.
- Pharmacological inhibition of PTP1B led to sustained improvement in motor, coordination, cardiac, and respiratory functions.
- Genetic PTP1B ablation confirmed on-target modulation of disease-relevant signaling.
Conclusions:
- PTP1B is a clinically actionable, disease-modifying target for RTT.
- Selective PTP1B inhibition offers a durable, mechanism-based treatment strategy.
- These findings support the clinical evaluation of PTP1B inhibitors for RTT treatment.
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