Molecular Pathways: Targeting Protein Tyrosine Phosphatases in Cancer
Open accessAbstract
The aberrant activation of oncogenic signaling pathways is a universal phenomenon in cancer and drives tumorigenesis and malignant transformation. This abnormal activation of signaling pathways in cancer is due to the altered expression of protein kinases and phosphatases. In response to extracellular signals, protein kinases activate downstream signaling pathways through a series of protein phosphorylation events, ultimately producing a signal response. Protein tyrosine phosphatases (PTP) are a family of enzymes that hydrolytically remove phosphate groups from proteins. Initially, PTPs were shown to act as tumor suppressor genes by terminating signal responses through the dephosphorylation of oncogenic kinases. More recently, it has become clear that several PTPs overexpressed in human cancers do not suppress tumor growth; instead, they positively regulate signaling pathways and promote tumor development and progression. In this review, we discuss both types of PTPs: those that have tumor suppressor activities as well as those that act as oncogenes. We also discuss the potential of PTP inhibitors for cancer therapy. Clin Cancer Res; 23(9); 2136–42. ©2017 AACR.
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Loss-of-function as well as gain-of-function mutations and/or overexpression of SHP2 are found in various diseases such as different cancer types, Noonan syndrome, and LEOPARD syndrome.
“Loss-of-function as well as gain-of-function mutations and/or overexpression of SHP2 are found in various diseases such as different cancer types [49], Noonan- [50], and LEOPARD-syndrome [51].”
From The tyrosine phosphatase SHP2 increases robustness and information transfer within IL-6-induced JAK/STAT signalling (2021) · cites this paper as [49]
The cited paper’s “Phosphatases as Oncogenes” section reports SHP2 overexpression in leukemia and breast cancer, and activating SHP2 mutations associated with childhood leukemias. It does not report loss-of-function SHP2 mutations in cancer. The Noonan and LEOPARD syndrome portions of the citing sentence have separate citations and are not judged here. (LLM, conf=0.85)
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Cites
The functions and regulation of the PTEN tumour suppressor
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Protein Tyrosine Phosphatases in the Human Genome
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Fiebelkow, J., Guendel, A., Guendel, B., Mehwald, N., Jetka, T., Komorowski, M., Waldherr, S., Schaper, F., & Dittrich, A. (2021) · Cell Communication and Signaling · doi:10.1186/s12964-021-00770-7 · Cited by 53 · see citing works
- Authors
- Bollu, L. R., Mazumdar, A., Savage, M. I., & Brown, P. H.
- Affiliations
- The University of Texas MD Anderson Cancer Center (US)
- Corresponding author
- Brown, Powel H.
- Venue
- Clinical Cancer Research
- Published
- 2017-04-30
- Volume
- 23
- Issue
- 9
- Pages
- 2136-2142
- ISSN
- 1078-0432 (ISSN-L)
- 1557-3265
- PMC
- PMC5413367
- OpenAlex
- W2574246591
- Cited by
- 168
- References
- 4
- Citations by year
- 2026: 14 · 2025: 13 · 2024: 29 · 2023: 26 · 2022: 14 · 2021: 16 · 2020: 21 · 2019: 20 · 2018: 13 · 2017: 2
- FWCI
- 1.43
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Clinical Cancer Research (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- eScholarship (California Digital Library) (submittedVersion)
- Funders
- National Cancer Institute (P30CA016672)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
- Health Sciences › Medicine › Pathology and Forensic Medicine › Cancer Mechanisms and Therapy
- Keywords
- protein tyrosine phosphatase, cancer, oncogenic signaling, tumor suppressor phosphatase, protein dephosphorylation, PTP inhibitors, cancer therapy, protein kinases, tumor progression
- MeSH terms
- Humans, Neoplasms, Phosphorylation, Protein Processing, Post-Translational, Signal Transduction, Genes, Tumor Suppressor, Protein Tyrosine Phosphatases, Molecular Targeted Therapy, Carcinogenesis
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