Janus kinase 2 (JAK2) plays a crucial role in the pathomechanism of myeloproliferative disorders and hematologic malignancies. A somatic mutation of JAK2 (Val617Phe) was previously shown to occur in 98% of patients with polycythemia vera and 50% of patients with essential thrombocythemia and primary myelofibrosis. Thus, effective JAK2 kinase inhibitors may be of significant therapeutic importance. Here, we applied a structure-based virtual screen to identify novel JAK2 inhibitors. One JAK2 inhibitor in particular, G6, demonstrated remarkable potency as well as specificity, which makes it as a potential lead candidate against diseases related to elevated JAK2 tyrosine kinase activity.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2812898PMC
http://dx.doi.org/10.1016/j.bmcl.2009.04.138DOI Listing

Publication Analysis

Top Keywords

jak2 tyrosine
8
tyrosine kinase
8
structure-based virtual
8
jak2
7
identification novel
4
novel inhibitor
4
inhibitor jak2
4
kinase
4
kinase structure-based
4
virtual screening
4

Similar Publications

Modulation of IL-6 receptor/STAT3 downstream signaling in rheumatoid arthritis patients.

Exp Mol Pathol

December 2024

Rheumatology Unit, Department of Precision and Regenerative Medicine and Ionian Area (DiMePre-J), University of Bari, Bari, Italy.

Interleukin-6 (IL-6) is a relevant cytokine in rheumatoid arthritis (RA) pathogenesis, potentially activating Janus kinases (JAK)-1, -2, and tyrosine kinase 2 (TYK2), and thus, three signal transducer and activator of transcription (STAT)-1, -3 or - 5 pathways. This pilot study aims to explore differences in phosphorylated (p)STAT3 levels among patients with RA, those not classified as RA (nRA), and healthy donors (HD), providing some clues on the relative contribution of each JAK protein to the downstream of the IL-6-induced STAT3 pathway. Clinical data and blood samples from 80 subjects (41 RA, 14 nRA, and 25 HD) were collected.

View Article and Find Full Text PDF

Selective JAK1 inhibitors and the therapeutic applications thereof: a patent review (2016-2023).

Expert Opin Ther Pat

December 2024

Jiangsu Key Laboratory of Drug Design and Optimization, Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing, P. R. China.

Introduction: The family of Janus kinases (JAKs) consists of four intracellular non-receptor tyrosine kinases: JAK1, JAK2, JAK3, and tyrosine kinase 2 (TYK2). Among these four subtypes, JAK1 is the only isoform that can form heterodimers with all three JAKs, and JAK1 dysfunction can lead to inflammation and severe autoimmune diseases. Interest in JAK1 inhibitors has grown tremendously, and the number of inhibitors targeting JAK1 continues to rise annually.

View Article and Find Full Text PDF

ALDH1L2 drives HCC progression through TAM polarization.

JHEP Rep

January 2025

State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Background & Aims: Dysregulation of one-carbon metabolism is considered an early hallmark of mitochondrial dysfunction and cancer metabolism. ALDH1L2 belongs to the aldehyde dehydrogenase family and plays an important role in tumor progression. However, little is known about the precise role and underlying mechanisms of ALDH1L2 in hepatocellular carcinoma (HCC).

View Article and Find Full Text PDF

The Phosphatases of Regenerating Liver (PRLs) are members of the protein tyrosine phosphatase (PTP) superfamily that play pro-oncogenic roles in cell proliferation, migration, and survival. We previously demonstrated that PRLs can post-translationally downregulate PTEN, a tumor suppressor frequently inactivated in human cancers, by dephosphorylating PTEN at Tyr336, which promotes the NEDD4-mediated PTEN ubiquitination and proteasomal degradation. Here we report that PRLs can also reduce PTEN expression by upregulating MicroRNA-21 (miR-21), which is one of the most frequently overexpressed miRNAs in solid tumors.

View Article and Find Full Text PDF

Background: Janus kinase II (JAK 2) mutation plays a critical part in the pathophysiology of myeloid pathologies and has been presented to be tangled in thrombotic obstacles of these sicknesses. This study documents the prevalence of JAK 2 v617 mutations in malignant and non-malignant tumors in the Eastern province of the Kingdom of Saudi Arabia.

Methods: A total of 112 patients were included in the current study between June 2022 and May 2023 at the Molecular Biology Laboratory of the King Fahad Hospital of the University, AlKhobar, Saudi Arabia.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!