2012 Helen Walker Research Grant Award

University of Göttingen | Nuno Raimundo, PhD

Supporting research aimed at identifying new therapeutic targets for Pompe disease.

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Quick Facts

Year Awarded:

2012

Funding Amount:

$100,000

Lead Investigator:

Nuno Raimundo, PhD

Institution:

University of Göttingen, Faculty of Medicine, Department of Biochemistry, Germany

Research Focus:

Therapeutic development and disease mechanism

Status:

Completed

Project Title

Mitochondria and Autophagy as Therapeutic Targets for Acid Maltase Deficiency

Project Snapshot

In 2012, the AMDA awarded the Helen Walker Research Grant to Nuno Raimundo, PhD, at the University of Göttingen, Faculty of Medicine, in Germany, to investigate new therapeutic strategies aimed at improving muscle function in Pompe disease. While enzyme replacement therapy has significantly improved patient outcomes, it primarily addresses the underlying enzyme deficiency and may not fully correct the complex cellular dysfunction associated with the disease.

This project focused on understanding how mitochondrial dysfunction and impaired autophagy contribute to the muscle pathology observed in Pompe disease. The research aimed to determine whether improving mitochondrial performance and enhancing cellular recycling pathways could alleviate symptoms of acid maltase deficiency.

Using mouse models of Pompe disease, the research examined genetic and pharmacological approaches designed to increase mitochondrial function and promote the removal of damaged cellular components. These studies were intended to identify potential therapeutic strategies that could complement existing treatments and improve muscle health in individuals living with Pompe disease.

Research Objectives

The project aimed to address several key questions related to treatment outcomes in Pompe disease:

1. Increase mitochondrial performance to improve skeletal muscle function in Pompe disease

Researchers investigated whether enhancing mitochondrial biogenesis in skeletal muscle could alleviate the muscle pathology associated with Pompe disease. This approach involved crossing Pompe disease mouse models with transgenic mice engineered to increase mitochondrial content and activity.

2. Increase autophagy and lysosomal clearance in skeletal muscle

The study examined whether boosting autophagy and lysosomal biogenesis through TFEB overexpression could reduce lysosomal glycogen accumulation and improve muscle function in a Pompe disease mouse model.

3. Evaluate pharmacologic activation of mitochondrial and autophagy pathways

Researchers tested whether drugs known to stimulate mitochondrial biogenesis and autophagy — such as bezafibrate and metformin — could improve muscle performance and cellular function in Pompe disease models.

Why This Matters

Pompe disease results from the buildup of glycogen within lysosomes due to a deficiency of the enzyme acid alpha-glucosidase. While enzyme replacement therapy addresses the underlying enzyme deficiency, research increasingly suggests that secondary cellular effects — such as mitochondrial dysfunction and impaired autophagy — also contribute to muscle pathology.

By exploring therapeutic strategies that target these additional cellular pathways, this research aimed to identify new approaches that could complement existing treatment and improve long-term outcomes for people living with Pompe disease.

Research Team

Institution

Department of Biochemistry, Faculty of Medicine, University of Göttingen, Germany

Lead Investigator

Nuno Raimundo, PhD
Department of Pathology, Yale University School of Medicine
(Group Leader at the University of Göttingen, Germany)

Lead Investigator

Nuno Raimundo, PhD
Department of Pathology, Yale University School of Medicine
(Group Leader at the University of Göttingen, Germany)

Grant Support

The AMDA awarded $100,000 through the Helen Walker Research Grant to support this project.

Funding supported the salary of a postdoctoral scientist, laboratory consumables, and the maintenance and study of mouse models used to investigate mitochondrial and autophagy pathways in Pompe disease.

Publications Resulting from This Research

This section will be updated as we collect more information about publications resulting from this research.

Related Outputs

This section will be updated as we collect more information about presentations, follow-up studies, or related outputs from this project.

Ongoing Impact

Research supported by the Helen Walker Research Grant helps build knowledge that can shape future studies, clinical care, and treatment strategies in Pompe disease. As additional publications, presentations, and follow-up work emerge, this page will continue to be updated.

About the Helen Walker Research Grant

The Helen Walker Research Grant honors Helen Walker, a dedicated patient advocate and leader in the Pompe community. Through this grant, the AMDA supports innovative research aimed at improving understanding, treatment, and care for individuals living with Pompe disease.

Explore more Helen Walker Research Grant awardees and the growing body of Pompe research supported by the AMDA.