MARK3

Last update 08 May 2025

Basic Info

Synonyms

C-TAK1, Cdc25C-associated protein kinase 1, CTAK1

+ [11]

Introduction

Serine/threonine-protein kinase (PubMed:16822840, PubMed:16980613, PubMed:23666762). Involved in the specific phosphorylation of microtubule-associated proteins for MAP2 and MAP4. Phosphorylates the microtubule-associated protein MAPT/TAU (PubMed:23666762). Phosphorylates CDC25C on 'Ser-216' (PubMed:12941695). Regulates localization and activity of some histone deacetylases by mediating phosphorylation of HDAC7, promoting subsequent interaction between HDAC7 and 14-3-3 and export from the nucleus (PubMed:16980613). Regulates localization and activity of MITF by mediating its phosphorylation, promoting subsequent interaction between MITF and 14-3-3 and retention in the cytosol (PubMed:16822840). Negatively regulates the Hippo signaling pathway and antagonizes the phosphorylation of LATS1. Cooperates with DLG5 to inhibit the kinase activity of STK3/MST2 toward LATS1 (PubMed:28087714). Phosphorylates PKP2 and KSR1 (PubMed:12941695).

100 Clinical Results associated with MARK3

100 Translational Medicine associated with MARK3

0 Patents (Medical) associated with MARK3

169

Literatures (Medical) associated with MARK3

01 Jun 2025·Biochemistry and Biophysics Reports

Clinical data investigation identifies MARK3 as an oncogenic driver in castration-resistant prostate cancer

Article

Author: Mishra, Parul ; Raut, Rajnikant ; Chakraborty, Amit Kumar ; Srivastava, Devesh ; Misra, Ashish ; Gupta, Parth ; Choudhury, Chumki ; Saini, Taruna ; Nayak, Vinayak ; Bais, Manish V

Castration-resistant prostate cancer (CRPC) represents an aggressive and fatal form of prostate cancer that emerges following resistance to androgen deprivation therapy. Despite the availability of various drugs that can enhance the quality and prolong the survival of CRPC patients, resistance to these therapies is frequently observed, making the disease increasingly difficult to treat. Altered expression of kinases and phosphatases is a critical driver of CRPC and presents a potential target for more effective treatments. In this study, we have performed comprehensive transcriptomic analysis of ∼359 normal and CRPC patient samples from The Cancer Genome Atlas to identify the differentially expressed kinases and phosphatases in patient samples. We shortlisted the candidate genes based on their differential expression profiles, associations with patient survival, Gleason scores, and their impact on the fitness of prostate cancer cell lines. Our in-silico analysis identified microtubule affinity-regulating kinase 3 (MARK3) as a novel CRPC driver that is upregulated in CRPC patients, linked with poor survival outcomes, and affects the fitness of CRPC cells. Furthermore, we found that pharmacological inhibition of MARK3 using PCC0208017, a MARK3 inhibitor, leads to reduced cell viability, migration potential, and cell cycle arrest in the G1 phase in prostate cancer cells. Additionally, RNA sequencing analysis in 22Rv1 cells treated with the MARK3 inhibitor revealed that MARK3 influences genes involved in androgen response, epithelial-mesenchymal transition, mTOR, and myc-signalling, underscoring its pivotal role in CRPC progression. Taken together, our results establish MARK3 as a novel and promising therapeutic target in CRPC.

13 Mar 2025·ACS Medicinal Chemistry Letters

In-Silico Screening-Based Discovery of New Natural eEF2K Inhibitors with Neuritogenic Activity

Article

Author: Wang, Ying ; Chen, Xiao-Xia ; Hu, Li-Jun ; Zhang, Xiao-Qi ; Shi, Lei ; Wang, Xinyu ; Zhang, Shiqing ; Huang, Xiao-Jun ; Ye, Wen-Cai ; Guo, Lingling ; Wang, Shu-Qin

Eukaryotic elongation factor 2 kinase (eEF2K), an atypical Ser/Thr-protein kinase that regulates neuronal protein synthesis homeostasis via an inhibitory phosphorylation of eEF2, has emerged as a promising therapeutic target for several diseases, including Alzheimer's disease (AD). In this study, we employed molecular docking with an in-house natural product library of 4270 compounds, containing 2177 novel compounds and 603 new structural frameworks, to identify eEF2K inhibitors. Following virtual screening, 25 natural products were selected for in-vitro evaluation of eEF2 phosphorylation inhibition as well as protein synthesis promotion. Our findings identified that compounds 17 and 23 potently suppress eEF2K activity, increase protein synthesis, and concurrently induce neuritogenesis. Molecular dynamics simulations suggest that 17 and 23 may stably bind to the eEF2K protein. Our findings highlighted 17 and 23 as new natural eEF2K inhibitors and promising candidates for promoting neural differentiation, providing potential therapeutic leads for the treatment of AD.

01 Jan 2025·European Journal of Medicinal Chemistry

Discovery of a novel, selective CK2 inhibitor class with an unusual basic scaffold

Article

Author: Elgaher, Walid A M ; Cochet, Claude ; Engel, Matthias ; Abadi, Ashraf H. ; Hamed, Mostafa M ; ElHady, Ahmed K ; Liu, Ting ; Khalifa, Hend ; Hamed, Mostafa M. ; Abadi, Ashraf H ; Filhol-Cochet, Odile ; Filhol, Odile ; ElHady, Ahmed K. ; Elgaher, Walid A.M. ; Abdel-Halim, Mohammad

CK2 is a Ser/Thr-protein kinase playing a crucial role in promoting cell growth and survival, hence it is considered a promising target for anti-cancer drugs. However, many previously reported CK2 inhibitors lack selectivity. In search of novel scaffolds for selective CK2 inhibition, we identified a dihydropyrido-thieno[2,3-d]pyrimidine derivative displaying submicromolar inhibitory activity against CK2α. This scaffold captured our interest because of the basic secondary amine, a rather unusual motif for CK2 inhibitors. Our optimization strategy comprised the incorporation of a 4-piperazinyl moiety as a linker group and introduction of varying substituents on the pendant phenyl ring. All resulting compounds exhibited potent CK2α inhibition, with IC₅₀ values in the nanomolar range. Compound 10b demonstrated the most balanced activity profile with a cell-free IC₅₀ value of 36.7 nM and a notable cellular activity with a GI₅₀ of 7.3 μM and 7.5 μM against 786-O renal cell carcinoma and U937 lymphoma cells, respectively. 10b displayed excellent selectivity when screened against a challenging kinase selectivity profiling panel. Moreover, 10b inhibited CK2 in the cells, albeit less potently than CX-4945, but induced cell death more strongly than CX-4945. Altogether, we have identified a novel CK2 inhibitory scaffold with drug-like physicochemical properties in a favorable basic pKa range.

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MARK3

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