bluuebunny/crossref_metadata_2025_split huggingface dataset:
Unusual Ring Opening of Bicyclic Terpenes During Pd‐Catalyzed Coupling with Aromatic Halides
Authors: Shutovskaya Evgeniya S. , Ustimenko Yulia P. , Tkachev Alexey V. , Burykina Julia V. , Agafontsev Alexander M. , Lastovka Anastasiya V. , Polovyanenko Dmitriy N. , Sukhikh Taisiya S. 
Published: October 2023

AbstractHerein we describe Pd‐catalyzed cross‐coupling reaction of α‐pinene derivative – pinacarvone O‐methyl oxime (1) with aryl halides (2). Surprisingly, the formation of the C−C coupling product was accompanied by an unexpected opening of the pinene bicyclic structure. The (Z)‐2‐aryl‐4,4,5‐trimethylcyclohexa‐2,5‐dien‐1‐one O‐methyl oxime (3) was formed as the resulting product. The reaction conditions of the developed synthetic procedure were carefully optimized and the reaction mechanism was supposed on the basis of data obtained by structural and computational methods.
Research on Curving Acc System for Electric Vehicle Driven by In‐wheel Motors Based on Fmpc And Smc
Authors: Yang Mingfei , Tian Jie 
Published: October 2023

AbstractIn order to ensure the lateral stability of adaptive cruise control (ACC) vehicles during curve following, this paper proposes a hierarchical multi‐objective coordinated control ACC system structure for in‐wheel motor drive electric vehicles. Different control strategies are designed for the cruise mode and car‐following mode of the ACC system. A proportion integral differential (PID) controller is used to meet the need for speed control in cruise mode. For the car‐following mode, a multi‐objective ACC system distance control strategy is proposed considering the performance of car following, passenger comfort, driving safety and driving economy of ACC vehicles. The weight coefficients in the objective function are updated in real time by using the fuzzy model predictive control (FMPC) strategy to meet the needs of different road conditions and improve the driving economy. Then, the desired front wheel steering angle is obtained by preview control theory. According to the theory of sliding mode control (SMC), a lateral stability controller is designed to track the desired yaw rate and sideslip angle. Simulation results show that the electric vehicle driven by in‐wheel motors based on FMPC and SMC has better car‐following performance and lateral stability performance under variable curvature curved road conditions.
CAR Gene Delivery by T‐cell Targeted Lentiviral Vectors is Enhanced by Rapamycin Induced Reduction of Antiviral Mechanisms
Authors: Charitidis Filippos T , Adabi Elham , Ho Naphang , Braun Angela H , Tierney Ciara , Strasser Lisa , Thalheimer Frederic B , Childs Liam , Bones Jonathan , Clarke Colin , Buchholz Christian J 
Published: October 2023

AbstractLentiviral vectors (LV) have become the dominant tool for stable gene transfer into lymphocytes including chimeric antigen receptor (CAR) gene delivery to T cells, a major breakthrough in cancer therapy. Yet, room for improvement remains, especially for the latest LV generations delivering genes selectively into T cell subtypes, a key requirement for in vivo CAR T cell generation. Toward improving gene transfer rates with these vectors, whole transcriptome analyses on human T lymphocytes are conducted after exposure to CAR‐encoding conventional vectors (VSV‐LV) and vectors targeted to CD8+ (CD8‐LV) or CD4+ T cells (CD4‐LV). Genes related to quiescence and antiviral restriction are found to be upregulated in CAR‐negative cells exposed to all types of LVs. Down‐modulation of various antiviral restriction factors, including the interferon‐induced transmembrane proteins (IFITMs) is achieved with rapamycin as verified by mass spectrometry (LC‐MS). Strikingly, rapamycin enhances transduction by up to 7‐fold for CD8‐LV and CD4‐LV without compromising CAR T cell activities but does not improve VSV‐LV. When administered to humanized mice, CD8‐LV results in higher rates of green fluorescent protein (GFP) gene delivery. Also in vivo CAR T cell generation is improved in kinetics and tumor control, however to a moderate extent, leaving room for improvement by optimizing the rapamycin administration schedule. The data favor multi‐omics approaches for improvements in gene delivery.
Advances in CAR‐Engineered Immune Cell Generation: Engineering Approaches and Sourcing Strategies
Authors: Chen Zhaozhao , Hu Yu , Mei Heng 
Published: October 2023

AbstractChimeric antigen receptor T‐cell (CAR‐T) therapy has emerged as a highly efficacious treatment modality for refractory and relapsed hematopoietic malignancies in recent years. Furthermore, CAR technologies for cancer immunotherapy have expanded from CAR‐T to CAR‐natural killer cell (CAR‐NK), CAR‐cytokine‐induced killer cell (CAR‐CIK), and CAR‐macrophage (CAR‐MΦ) therapy. Nevertheless, the high cost and complex manufacturing processes of ex vivo generation of autologous CAR products have hampered broader application. There is an urgent need to develop an efficient and economical paradigm shift for exploring new sourcing strategies and engineering approaches toward generating CAR‐engineered immune cells to benefit cancer patients. Currently, researchers are actively investigating various strategies to optimize the preparation and sourcing of these potent immunotherapeutic agents. In this work, the latest research progress is summarized. Perspectives on the future of CAR‐engineered immune cell manufacturing are provided, and the engineering approaches, and diverse sources used for their development are focused upon.
SUCLG2 Regulates Mitochondrial Dysfunction through Succinylation in Lung Adenocarcinoma
Authors: Hu Qifan , Xu Jing , Wang Lei , Yuan Yi , Luo Ruiguang , Gan Mingxi , Wang Keru , Zhao Tao , Wang Yawen , Han Tianyu , Wang Jian‐Bin 
Published: October 2023

AbstractMitochondrial dysfunction and abnormal energy metabolism are major features of cancer. However, the mechanisms underlying mitochondrial dysfunction during cancer progression are far from being clarified. Here, it is demonstrated that the expression level of succinyl‐coenzyme A (CoA) synthetase GDP‐forming subunit β (SUCLG2) can affect the overall succinylation of lung adenocarcinoma (LUAD) cells. Succinylome analysis shows that the deletion of SUCLG2 can upregulate the succinylation level of mitochondrial proteins and inhibits the function of key metabolic enzymes by reducing either enzymatic activity or protein stability, thus dampening mitochondrial function in LUAD cells. Interestingly, SUCLG2 itself is also succinylated on Lys93, and this succinylation enhances its protein stability, leading to the upregulation of SUCLG2 and promoting the proliferation and tumorigenesis of LUAD cells. Sirtuin 5 (SIRT5) desuccinylates SUCLG2 on Lys93, followed by tripartite motif‐containing protein 21 (TRIM21)‐mediated ubiquitination through K63‐linkage and degradation in the lysosome. The findings reveal a new role for SUCLG2 in mitochondrial dysfunction and clarify the mechanism of the succinylation‐mediated protein homeostasis of SUCLG2 in LUAD, thus providing a theoretical basis for developing anti‐cancer drugs targeting SUCLG2.
Importance of the Walden Inversion for the Activity Volcano Plot of Oxygen Evolution
Authors: Exner Kai S. 
Published: October 2023

AbstractSince the birth of the computational hydrogen electrode approach, it is considered that activity trends of electrocatalysts in a homologous series can be quantified by the construction of volcano plots. This method aims to steer materials discovery by the identification of catalysts with an improved reaction kinetics, though evaluated by means of thermodynamic descriptors. The conventional approach for the volcano plot of the oxygen evolution reaction (OER) relies on the assumption of the mononuclear mechanism, comprising the *OH, *O, and *OOH intermediates. In the present manuscript, two new mechanistic pathways, comprising the idea of the Walden inversion in that bond‐breaking and bond‐making occurs simultaneously, are factored into a potential‐dependent OER activity volcano plot. Surprisingly, it turns out that the Walden inversion plays an important role since the activity volcano is governed by mechanistic pathways comprising Walden steps rather than by the traditionally assumed reaction mechanisms under typical OER conditions.
Significant Roles of Surface Hydrides in Enhancing the Performance of Cu/BaTiO2.8H0.2 Catalyst for CO2 Hydrogenation to Methanol
Authors: He Yang , Li Yuanyuan , Lei Ming , Polo‐Garzon Felipe , Perez‐Aguilar Jorge , Bare Simon R. , Formo Eric , Kim Hwangsun , Daemen Luke , Cheng Yongqiang , Hong Kunlun , Chi Miaofang , Jiang De‐en , Wu Zili 
Published: October 2023

AbstractTuning the anionic site of catalyst supports can impact reaction pathways by creating active sites on the support or influencing metal‐support interactions when using supported metal nanoparticles. This study focuses on CO2 hydrogenation over supported Cu nanoparticles, revealing a 3‐fold increase in methanol yield when replacing oxygen anions with hydrides in the perovskite support (Cu/BaTiO2.8H0.2 yields ~146 mg/h/gCu vs. Cu/BaTiO3 yields ~50 mg/h/gCu). The contrast suggests that significant roles are played by the support hydrides in the reaction. Temperature programmed reaction and isotopic labelling studies indicate that BaTiO2.8H0.2 surface hydride species follow a Mars van Krevelen mechanism in CO2 hydrogenation, promoting methanol production. High‐pressure steady‐state isotopic transient kinetic analysis (SSITKA) studies suggest that Cu/BaTiO2.8H0.2 possesses both a higher density and more active and selective sites for methanol production compared to Cu/BaTiO3. An operando high‐pressure diffuse reflectance infrared spectroscopy (DRIFTS)‐SSITKA study shows that formate species are the major surface intermediates over both catalysts, and the subsequent hydrogenation steps of formate are likely rate‐limiting. However, the catalytic reactivity of Cu/BaTiO2.8H0.2 towards the formate species is much higher than Cu/BaTiO3, likely due to the altered electronic structure of interface Cu sites by the hydrides in the support as validated by density functional theory (DFT) calculations.
A Magnetic Resonance Imaging‐Chemical Exchange Saturation Transfer (MRI‐CEST) Method for the Detection of Water Cycling across Cellular Membranes
Authors: Di Gregorio Enza , Papi Chiara , Conti Laura , Di Lorenzo Antonino , Cavallari Eleonora , Salvatore Marco , Cavaliere Carlo , Ferrauto Giuseppe , Aime Silvio 
Published: October 2023

AbstractWater cycling across the membrane transporters is considered a hallmark of cellular metabolism and it could be of high diagnostic relevance in the characterization of tumors and other diseases. The method relies on the response of intracellular proton exchanging molecules to the presence of extracellular Gd‐based contrast agents (GBCAs). Paramagnetic GBCAs enhances the relaxation rate of water molecules in the extracellular compartment and, through membrane exchange, the relaxation enhancement is transferred to intracellular molecules. The effect is detected at the MRI‐CEST (Magnetic Resonance Imaging ‐ Chemical Exchange Saturation Transfer) signal of intracellular proton exchanging molecules. The magnitude of the change in the CEST response reports on water cycling across the membrane. The method has been tested on Red Blood Cells and on orthotopic murine models of breast cancer with different degree of malignancy (4T1, TS/A and 168FARN). The distribution of voxels reporting on membrane permeability fits well with the cells’ aggressiveness and acts as an early reporter to monitor therapeutic treatments.
Recyclable porous polyurethane sponge for highly efficient oil–water separation
Authors: Li Jiwei , Xu Pengfei , Guo Jiankui , Luo Yangyang , Shao Linjun , Xing Guiying , Qi Chenze 
Published: October 2023

AbstractOil spills and chemical leakages have caused severe environmental problems. Physical absorption of the spilled oils and chemical reagents by absorbing materials is an efficient and economical approach to solve these problems. Herein, we have prepared a porous thermoplastic polyurethane (TPU) sponge by combining the thermally induced phase separation method with the selective dissolution of water‐soluble PEG components. The selective removal of PEG components from the walls of TPU sponges could increase the intensities of free volume holes and surface areas of TPU sponges. The content of free volume holes and surface areas of TPU sponge reached its maximum with the TPU/PEG ratio of 1:1. The increased roughness could improve the absorption capacities of TPU sponges for various oils/organic solvents. Moreover, due to its excellent compressibility, this TPU sponge could be reused 20 times with little loss of saturated absorption capacity. In addition, this TPU sponge exhibited excellent separation ability for the toluene from the toluene/water mixture and emulsion. In all, we have developed a facile method to prepare TPU sponge absorbent with excellent absorption performance, which holds great potential in the application of large‐scale oil/water separation.
Enantioselective and Chemoselective Optical Detection of Chiral Organic Compounds without Resorting to Chromatography
Authors: Bhushan Ravi 
Published: October 2023

AbstractEnantiorecognition and resolution are of essential importance in many diverse areas of science. Whenever there arises a need to analyze/investigate enantiomers in different situations chromatography stands up in our minds immediately. Nevertheless, chemoselective and enantioselective recognition/discrimination (without going for separation) constitutes a different perception and requirement. The techniques using chiroptical sensing cause detection based on molecular interactions induced in different manners. Enantioselective sensing of monosaccharides in γ‐cyclodextrin assembly and by diboronic acid based fluorescent sensors, application of bi‐naphthol and H8BINOL based sensors and dendrimers, metal‐to‐ligand charge transfer transitions in CD, exciton‐coupled circular dichroism, surface enhanced Raman spectroscopy, and enantioselective indicator displacement sensor arrays for enantioselective recognition/detection of chiral organic compounds, such as amines, amino acids/alcohols, and hydroxycarboxylic acids have been discussed in progressive manner with mechanistic explanations, wherever available. Besides, the chiroptical vs LC approach has been discussed. The present paper is focused on certain different non‐chromatographic optical techniques and aims to extend an understanding and a view to consider such techniques which have been successful in selective detection, and determination of absolute configuration and enantiomeric excess, (without resorting to separation vis‐à‐vis LC) and that have potential use in high‐throughput chiral assay and combinatorial search for asymmetric catalysts and reagents.
Female advertising models and their body mass index (BMI): How does BMI similarity affect perceived product quality?
Authors: Vazquez Erik Ernesto , Felix Reto , Siliceo Lorena 
Published: October 2023

AbstractRecent research has pointed out the importance of appearance similarity as a special instance of homophily. The current paper introduces body mass index (BMI) similarity as a convenient and powerful proxy of perceived appearance homophily in the context of female advertising models by showing process evidence and boundary conditions for the effect of BMI similarity on marketing‐relevant downstream variables. Study 1 tests how BMI similarity relates to a traditional measure of appearance homophily and perceived reliability of a female advertising model. Study 2 shows that BMI similarity influences perceived product quality and purchase intention. Website vividness negatively moderates the relationship between BMI similarity and product quality. Study 3 tests for alternative explanations and provides support for the mediating effect of appearance homophily for the relationship between BMI similarity and perceived product quality. The findings provide marketing managers with important insights on how to increase their marketing effectiveness by integrating BMI similarity into their marketing communications. Additionally, using BMI similarity serves as an alternative way to promote diversity and inclusion of models with plus‐size body type often sought by societal brands.
Zingiber officinale Roscoe Essential Oils‐Loaded Chitosan Nanoparticles with Enhanced Bactericidal Efficacy against Burkholderia glumae in Rice
Authors: Tiran Gunasena Mahesh , Hussein Mohd Zobir , Ali Asgar , Wahab Mohd Aswad Abdul , Bashir Kutawa Abdulaziz , Rafif Amara , Afif Mohd Zobir Syazwan , Ahmad Khairulmazmi 
Published: October 2023

AbstractGinger essential oils (GEO) shows exceptional antimicrobial properties against plant pathogens. Due to its high volatility and low stability, it requires encapsulation to retain its effective properties. The GEO‐Chitosan (GEO‐CS) nanobactericide was developed using the ionic gelation method. The nanobactericides show particle diameters of 465, 28, 35, 48 and 500 nm when sodium tripolyphosphate (TPP) concentrations used in the preparation were 0.0, 0.5, 1.0, 2.0 and 4.0 %, respectively. The X‐ray diffraction and the UV‐vis studies revealed that the GEO was encapsulated into the chitosan nanoparticles with an encapsulation efficiency of around 46 % and a loading capacity of 27–34 %. The antibacterial activity of GEO‐chitosan nanobactericide against Burkholderia glumae (Bg) was found to be 7.5–11.8 mm, with minimum inhibitory concentration and minimum bactericidal concentration values of 15.6 μl/mL and 31.25 μl/mL, respectively. Hence, these findings indicate that the prepared GEO‐CS nanobactericides were found to be effective against Bg. This preliminary study is toward the development of new agronanobactericides using a natural product to control Bg.
Machine Learning Applied to Predict Key Petroleum Crude Oil Constituents
Authors: Dhankar Shreshtha , Sharma Deepika , Mohanta Hare Krishna , Sande Priya Christina 
Published: October 2023

AbstractSulfur compounds are the most important inorganic constituents of petroleum and require to be estimated beforehand because of their corrosive nature and other processing anomalies during crude oil processing. Paraffins, naphthene, and aromatics form the bulk of crude oil. Machine learning (ML) predictions of these constituents were made by training the ML model with a diverse industrial data set of 515 oils. The XGBoost model gave an excellent R2 in the range 0.88–0.99 for the bulk compounds. R2 for sulfur was in the modest range of 0.45–0.6, which improved significantly to 0.8 for additional inputs. ML applicability was thereby found to depend on the nature of the constituent. This work furthers ML‐based predictions, with the incentive of reducing expensive spectroscopic analytical methods.
Proton Activation in the Presence of a Weak Acid Facilitated by Second Coordination Sphere Effects in Iron Porphyrins**
Authors: Ramuglia Anthony R. , Budhija Vishal , Ly Khoa H. , Schwalbe Matthias , Weidinger Inez M. 
Published: October 2023

AbstractThe catalytic activity of two iron‐based porphyrin complexes containing pyridine‐functionalized second coordination spheres, referred to as Py2XPFe and CuPy2XPFe, have been investigated for the hydrogen evolution reaction (HER) and compared with the unsubstituted analog TMPFe in acetonitrile. The CuPy2XPFe incorporates a second metal center within the pyridine residues and represents a heterodinuclear system, while the structurally analogous Py2XPFe lacks an additional metal in the second coordination sphere. Both the Py2XFe and CuPy2XPFe complexes are observed to activate the weak acid, acetic acid (AcOH) at the FeII/I couple rather than at the more energy intensive FeI/0 couple observed for the unfunctionalized TMPFe complex at low acid concentrations. The ability of the monometallic Py2XPFe to activate the weak proton source at the FeII/I couple manifests as an ECEC(E)′ type electrochemical mechanism, rather than an EECC(E)′ type mechanism as observed for TMPFe. The CuPy2XPFe displays improved reactivity compared with the Py2XPFe and TMPFe under the same substrate conditions, however the mechanistic nuances into bimetallic CuPy2XPFe system are currently unclear. The concentration of AcOH was incrementally increased and the rate constants of the initial protonation step i. e. formation of a hydridic species (k1,app), as well as of the protonation of the hydridic species to produce dihydrogen (kglobal) were calculated using the Foot‐of‐the‐wave and plateau current rate equation methodologies, respectively. The kinetic analysis indicates that the activation of protons through the ECEC(E)′ type mechanism for the Py2XPFe results in a system in which k1,app< kglobal. As both the monometallic Py2XPFe and bimetallic CuPy2XPFe activate the AcOH at less cathodic potentials than TMPFe under identical conditions, the overpotentials (ηTOF/2) for these complexes are thus dramatically lower. The reactivity difference of the Py2XPFe when compared to non‐substituted iron porphyrin analogs is due to the hanging group's influence, which is believed to either act as hydrogen bond promoters for the active site or aids to stabilize a catalytic intermediate species during catalysis.
Evidence for microtubule nucleation at the Golgi in breast cancer cells
Authors: Zahn Laura A. , Lundin‐Schiller Sarah 
Published: October 2023

AbstractGolgi‐derived microtubule (MT) arrays are essential to directionally persistent cell migration and vesicle transport. In this study, we have examined MT nucleation sites in two breast cancer cell lines, MDA‐MB‐231 and MCF‐7, with the hypothesis that only the migratory invasive MDA‐MB‐231 cells exhibit MTs originating from the Golgi. MTs were disassembled and allowed to slightly regrow so individual nucleation sites could then be observed via fluorescently tagged antibodies (α‐tubulin, cis‐Golgi marker GM130, and EB1—a MT plus‐end binding protein) and confocal microscopy. To determine if MT nucleation at the Golgi is more apparent during active migration compared to when cells are stationary, cells were treated with the chemoattractant epidermal growth factor (EGF) and examined for colocalizations between the Golgi, α‐tubulin, and γ‐tubulin. Images were analyzed qualitatively for color overlap, and quantitatively using Manders Colocalization Coefficients. Differences between groups were tested for significance using one‐way analysis of variances and Tukey's post hoc test. Significantly higher colocalization values (coloc) in the highly invasive MDA‐MB‐231 cells (α‐tubulin coloc GM130 = 0.39, GM130 coloc α‐tubulin = 0.82, GM130 coloc EB1 = 0.24, and EB1 coloc GM130 = 0.38) compared to the weakly invasive MCF‐7 cells (0.15, 0.08, 0.02, and 0.16, respectively) were observed. EGF‐treated cells exhibited higher colocalization values than control cells for three of the four protein combinations tested, but EGF‐treated MDA‐MB‐231 cells exhibited significantly higher values (α‐tubulin coloc GM130 = 0.20, GM130 coloc α‐tubulin = 0.89, and γ‐tubulin coloc GM130 = 0.47) than both control groups as well as the EGF‐treated MCF‐7 cells. Results support the hypothesis that MT nucleation at the Golgi occurs more frequently in the invasive MDA‐MB‐231 cell line compared to the weakly invasive MCF‐7 cells. The presence or absence of Golgi‐derived MTs may help to explain the difference in migratory potential commonly exhibited by these two cell lines.