- Article
Ovarian cancer (OC) is characterized by delayed clinical diagnosis, intrinsic/acquired platinum chemoresistance, and a high postoperative recurrence rate, highlighting an unmet clinical need for new targeted therapeutic strategies. Herein, we integrated pan-cancer transcriptomic profiling, clinical tissue immunohistochemistry, siRNA-mediated gene silencing, co-immunoprecipitation, structure-based virtual ligand screening, in vitro kinase activity assays, cellular viability functional assays, and SK-OV-3 xenograft mouse models to preliminarily reveal that CaMKII-β may mediate OC progression and characterize the anti-tumor potency of tannic acid. We preliminarily found that CaMKII-β is upregulated in OC patient tissues, and its elevated expression correlates with unfavorable overall survival. Genetic depletion of CaMKII-β attenuated OC cell viability both in vitro and in vivo via interfering with RAS-related signaling and suppressing downstream PI3K, AKT, and NF-κB transcriptional signaling cascades. Structure-based virtual screening identified tannic acid as a candidate CaMKII-β inhibitor with an IC50 value of 217 nM. Functional cellular assays demonstrated that tannic acid suppresses OC cell viability in a dose-dependent manner, accompanied by reduced phosphorylation of PI3K, AKT, and NF-κB, while the total protein levels of these signaling intermediates remain unaltered. In vivo intraperitoneal injection of tannic acid impeded the growth of SK-OV-3 xenograft tumors without inducing measurable systemic weight loss in host mice. In summary, CaMKII-β may contribute to malignant progression of OC through its association with RAS-related signaling, and tannic acid shows pre-clinical preliminary anti-tumor activity associated with CaMKII-β-related signaling in OC. Further mechanistic validation, pharmacokinetic, toxicological, and clinically relevant in vivo studies are required to evaluate its translational potential.
12 November 2026




















![Bodies and minds self-assemble from single cells as a process of alignment and autopoiesis. (A) Most complex biological forms begin as one cell—a fertilized oocyte, commonly thought to be well-described by the laws of physics and chemistry. (B) A gradual, slow process of developmental morphogenesis results in the final form of the organism, which may have complex structure and a mind which may not believe it is a “machine”. Our transformation from a chemical soup into an active embodied mind is continuous but heterogeneous: (C) while we commonly think of ourselves as a unified intelligence with a “centralized” brain, the fact is that even the pineal gland, of which there is only one in the brain, is made of cells (C′) and those cells in turn are made of myriad other active components (C″)—we are a collective intelligence at all scales. (D) The creation of an “individual” out of an excitable medium such as an embryonic blastoderm with hundreds of thousands of cells is a dynamic process that is not hardwired: scratches made in that blastoderm would result in independent self-organization in each island, resulting in multiple embryos forming. This reveals the potentiality for some non-pre-determined number of minds to arise out of the same substrate. Images in (A,B,D) courtesy of Jeremy Guay of Peregrine Creative, used previously in [29]. Image (B) used with permission from [30]. Image in (C′) courtesy of Jose Calvo, Science Photo Library. Image in (C″) courtesy of Evan Ingersoll and Gaël McGill. Image (D) used with permission from [31].](https://mdpi-res.com/philosophies/philosophies-11-00161/article_deploy/html/images/philosophies-11-00161-g001-550.jpg)






