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Updated: Jun 28, 2025

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Assessing Cellular Target Engagement by SHP2 PTPN11 Phosphatase Inhibitors
Published on: July 17, 2020
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Targeting PRL phosphatases in hematological malignancies.
Shiyu Xiao1, Hongxia Chen1,2, Yunpeng Bai3
1Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
Expert Opinion on Therapeutic Targets
|April 23, 2024
Summary
Phosphatase of regenerating liver (PRL) proteins are key in many cancers. This review explores their role in blood cancers and discusses developing better PRL inhibitors for improved treatment outcomes.
Area of Science:
- Biochemistry
- Oncology
- Hematology
Background:
- Phosphatase of regenerating liver (PRL) proteins, also known as protein tyrosine phosphatase 4A (PTP4A), are implicated in various cancers.
- The PRL family (PRL1, PRL2, PRL3) exhibits oncogenic potential and is highly expressed in diverse malignancies.
- PRLs are crucial in cancer progression and metastasis, making them potential therapeutic targets.
Purpose of the Study:
- To review recent studies on PRLs in normal and malignant hematopoiesis.
- To elucidate the role of PRLs in regulating signaling pathways relevant to blood cancers.
- To discuss the therapeutic potential of targeting PRLs in hematological malignancies and improving existing inhibitors.
Main Methods:
- Literature review of preclinical and clinical studies.
- Analysis of signaling pathways regulated by PRLs.
- Evaluation of current and potential therapeutic strategies targeting PRLs.
Main Results:
- PRLs are involved in both normal and malignant hematopoiesis.
- PRLs regulate key signaling pathways implicated in blood cancer development.
- Preclinical studies show promise for PRL inhibitors in various cancers.
Conclusions:
- Further research is essential to fully understand PRL functions in blood cancers.
- Developing more potent and selective PRL inhibitors is critical for effective hematological malignancy treatment.
- Translating promising preclinical findings into clinical success remains a significant challenge.
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