ABSTRACT
Introduction The benefits of Electronic Health Records (EHR) use in clinical care are well documented. However, without proper education and training on EHR systems, clinicians may face challenges in utilizing these technological tools effectively. Suboptimal usage of EHR systems can affect productivity. This study assesses the effectiveness of an end-user-designed education bundle as a supplement to existing training in EHR training for house officers. Additionally, it evaluates the effectiveness of using non-conventional teaching modalities (i.e., short TikTok-style videos) to see how effective and accepted it was in comparison to traditional educational material. Methods A single-armed pre-post-study design consisting of 36 house officers was employed to evaluate the effectiveness of the intervention bundle. The bundle consists of a series of EHR tips and tricks as identified by experienced senior medical officers. The three components of the bundle are a handbook with consolidated tips and tricks, a long-form lecture video, and a series of TikTok-style videos. Distribution was done through healthcare collaborative platforms such as TigerConnect™ (Los Angeles, USA) and email. Results Participants found that the inclusion of our supplementary education bundle results in more effective training for EHR usage, with mean effectiveness with and without the educational bundle being 7.77 and 6.44, respectively (p < 0.001). There were also significant improvements in ease of finding information (7.67 vs 7.14, p = 0.016), performing general functions (7.50 vs 6.89, p = 0.0050), and overall efficiency (7.39 vs 6.92, p = 0.022). We also found TikTok-style videos were non-inferior to more traditional forms of education such as a handbook and traditional long-form lecture videos (p = 0.250). Conclusion An end-user-driven education bundle focusing on high-yield, advanced functions may be useful in enhancing the overall EHR system experience for junior doctors. Of note, TikTok-style videos may be no less effective than traditional methods of EHR teaching.
ABSTRACT
PURPOSE: Patients with advanced stages of mantle cell lymphoma (MCL) have a poor prognosis after standard therapies. MCL cells in those patients often spread into tissues other than lymph nodes, such as the bone marrow. Apart from directed migration and homing, there is little understanding of the function of the CXCR4/SDF-1 signaling axis in MCL. In this report, we aim to understand mechanisms of MCL cell survival in the bone marrow. EXPERIMENTAL DESIGN: For comprehensive analyses of MCL interactions with bone marrow stromal cells, we have generated gene knockout cells using CRISPR-CAS9 system and gene knockdown cells to reveal novel roles of the CXCR4/SDF-1 signaling. RESULTS: CXCR4 silencing in MCL cells led to a significant reduction in proliferation, cell adhesion to bone marrow stromal cells, and colony formation in PHA-LCM methylcellulose medium, which were reversed upon the addition of SDF-1-neutralizing antibodies. In addition, tracking MCL cell engraftment in vivo revealed that quiescent MCL cells are significantly reduced in the bone marrow upon CXCR4 silencing, indicating that CXCR4/SDF-1 signaling is required for the survival and maintenance of the quiescent MCL cells. Further analysis revealed novel mechanisms of ROS-induced CXCR4/SDF-1 signaling that stimulate autophagy formation in MCL cells for their survival. CONCLUSIONS: Our data, for the first time, revealed new roles of the CXCR/SDF-1 signaling axis on autophagy formation in MCL, which further promoted their survival within the bone marrow microenvironment. Targeting the CXCR4/SDF-1/autophagy signaling axis may contribute to an enhanced efficacy of current therapies.
Subject(s)
Bone Marrow/metabolism , Lymphoma, Mantle-Cell/metabolism , Lymphoma, Mantle-Cell/pathology , Reactive Oxygen Species/metabolism , Receptors, CXCR4/metabolism , Signal Transduction , Tumor Microenvironment , Antineoplastic Agents/pharmacology , Autophagy/genetics , Bone Marrow/pathology , Cell Adhesion/drug effects , Cell Line, Tumor , Cell Movement/drug effects , Cell Survival/genetics , Chemokine CXCL12/metabolism , Drug Resistance, Neoplasm/genetics , Humans , Lymphoma, Mantle-Cell/drug therapy , Lymphoma, Mantle-Cell/genetics , Mesenchymal Stem Cells/metabolism , Mesenchymal Stem Cells/pathology , Neoplasm Staging , Receptors, CXCR4/antagonists & inhibitors , Receptors, CXCR4/genetics , Stress, PhysiologicalABSTRACT
TNF-related apoptosis-inducing ligand (TRAIL) can induce apoptosis in many types of cancer cells. TRAIL is considered a therapeutic target, therefore, it was of interest to examine molecular mechanisms that may modulate sensitivity to TRAIL signaling in prostate cancer cells. LNCaP cells were found to be relatively resistant to TRAIL induced cell death while PC3 cells were sensitive. PI3-kinase (PI3 K) inhibitors were able to render LNCaP cells sensitive to TRAIL but conferred resistance to PC3 cells. PI3 K inhibitors were associated with an increase in p21(waf1, cip1) expression in PC3 cells where as p21 decreases in LNCaP cells suggesting that p21 may impart TRAIL resistance. Since androgen receptor (AR) signaling can be modulated by AKT, and p21 is an AR responsive gene, the impact of PI3 K inhibition on TRAIL sensitivity was evaluated in AR transfected PC3 cells (PC3AR). The expression of AR was significantly downregulated by PI3 K inhibition in LNCaP cells, which have an intact AR signaling axis. PC3AR cells expressed higher levels of p21 protein and were relatively resistant to TRAIL compared to control cells. Finally, using adenoviral p21 gene transfer we directly demonstrated that p21 can confer resistance to TRAIL-induced cell death. These results suggest that TRAIL resistance is not regulated simply by a PI3 K/AKT survival pathway associated with inactivating PTEN mutations but may also be modulated by downstream AR responsive targets such as p21. These findings may have significant clinical implications for the utility of TRAIL in the management of prostate cancer.
