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ROR1 protein: a pseudokinase at the crossroads of cancer progression and therapy
Shradheya R R Gupta1, Rashmi Rameshwari2, Indrakant Kumar Singh3,4,5
1Department of Biotechnology, School of Engineering and Technology (SET), Manav Rachna International Institute of Research and Studies (MRIIRS), Faridabad, Haryana, 121004, India.
Abstract:
Pseudokinases, a subclass of the human kinome, play critical roles in cellular regulation despite their lack of enzymatic activity. Among these, the Receptor Tyrosine Kinase-Like Orphan Receptor 1 (ROR1) has emerged as a pivotal regulator in cancer biology. ROR1, initially identified for its role in embryonic development, is aberrantly expressed in various malignancies, including hematologic cancers and solid tumors, while being largely absent in normal adult tissues. Its unique expression profile, coupled with its role in tumor survival, metastasis, therapy resistance, and stemness, makes ROR1 an attractive therapeutic target. This review provides an in-depth analysis of the structural and functional attributes of ROR1, its interaction with oncogenic signaling pathways, and its implications in tumor progression. We also explore current therapeutic strategies, including monoclonal antibodies, antibody-drug conjugates (ADCs), chimeric antigen receptor (CAR) T-cell therapy, and small-molecule inhibitors, highlighting their clinical potential and limitations. Understanding the mechanistic underpinnings of ROR1-driven oncogenesis and overcoming therapeutic challenges will be crucial for developing effective anti-cancer strategies targeting this pseudokinase.
Insights
Receptor Tyrosine Kinase-Like Orphan Receptor 1 (ROR1) is a pseudokinase crucial in cancer. Targeting ROR1 offers a promising strategy for developing novel anti-cancer therapies against various malignancies.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Pseudokinases regulate cellular processes despite lacking enzymatic activity.
- Receptor Tyrosine Kinase-Like Orphan Receptor 1 (ROR1) is a pseudokinase implicated in cancer biology.
- ROR1 is aberrantly expressed in numerous cancers but not in normal adult tissues.
Purpose of the Study:
- To provide an in-depth analysis of ROR1's structural and functional characteristics.
- To explore ROR1's interactions with oncogenic signaling pathways and its role in tumor progression.
- To review current and emerging therapeutic strategies targeting ROR1.
Main Methods:
- Literature review and analysis of ROR1's role in cancer.
- Examination of ROR1's structural and functional attributes.
- Assessment of therapeutic strategies including antibodies, ADCs, CAR T-cell therapy, and small-molecule inhibitors.
Main Results:
- ROR1 drives tumor survival, metastasis, therapy resistance, and stemness.
- ROR1 interacts with key oncogenic signaling pathways.
- Various therapeutic modalities targeting ROR1 show clinical potential.
Conclusions:
- ROR1 is a significant therapeutic target in oncology due to its oncogenic roles and unique expression.
- Developing effective anti-cancer strategies requires understanding ROR1's mechanisms and overcoming therapeutic challenges.
- Targeting ROR1 holds promise for treating hematologic cancers and solid tumors.
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