Publications by authors named "Chen Pengcheng"

Cell migration towards stiff substrates has been coined as durotaxis and implicated in development, wound healing, and cancer, where complex interplays between immune and non-immune cells are present. Compared to the emerging mechanisms underlying the strongly adhesive mesenchymal durotaxis, little is known about whether immune cells - migrating in amoeboid mode - could follow mechanical cues. Here, we develop an imaging-based confined migration device with a stiffness gradient.

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Methionine adenosyltransferase 2 A (MAT2A) has been found to mediate osteosarcoma (OS) progression. Therefore, more roles and mechanisms of MAT2A in the development of OS deserve further exploration. The mRNA and protein levels of MAT2A and RNA binding motif protein 15 (RBM15) were tested by quantitative real-time PCR and western blot (WB).

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Jasmonic acid (JA), a phytohormone with a distinct flavor, is an important fragrance ingredient. The filamentous fungi sp. can produce JA via fermentation.

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Article Synopsis
  • - Ephedra, a Chinese herb, has been used to prevent and treat diseases caused by coronaviruses, including COVID-19, but its active compounds and mechanisms against SARS-CoV-2 are not fully understood.
  • - The study focused on identifying natural inhibitors of the main protease (M) of SARS-CoV-2 from Ephedra; it found that the non-alkaloid fraction effectively inhibited this enzyme, while the alkaloid fraction did not.
  • - Key constituents, herbacetin (HE) and gallic acid (GA), showed strong inhibitory effects on SARS-CoV-2 M, particularly when combined, suggesting a synergistic mechanism that could support the use of Ephedra in antiviral therapies
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Osteosarcoma (OS) is the most frequent bone malignancy in humans. Previous evidence suggest that circ_0032463 is an oncogenic circular RNA (circRNA) in various cancers, including OS. However, the molecular mechanism of circ_0032463 involved in OS is still unclear.

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  • Colorectal cancer, particularly colon adenocarcinoma, is a major health issue, being the third most common and second deadliest cancer, with this study focusing on how anoikis-related genes (ARGs) influence tumor progression.* -
  • Researchers used various methods, including clustering and survival analysis, analyzing RNA sequences from databases like GEO and TCGA, to develop a scoring system for predicting overall survival based on selected genes like RAD9A and NTRK2.* -
  • The study found significant prognostic factors linked to specific genes and revealed that RAD9A enhances colon cancer cell growth and spread by activating pathways involving phosphorylation of AKT, indicating its potential as a target for personalized treatment strategies.*
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Nanodomain engineering in lithium niobate on insulator (LNOI) is critical to realize advanced photonic circuits. Here, we investigate the tip-induced nanodomain formation in x-cut LNOI. The effective electric field exhibits a mirror symmetry, which can be divided into preceding and sequential halves according to the tip movement.

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Myrosinase (Myr) catalyzes the hydrolysis of glucosinolates, yielding biologically active metabolites. In this study, glucoraphanin (GRA) extracted from broccoli seeds was effectively hydrolyzed using a Myr-obtained cabbage aphid () (Myr) to produce (R)-sulforaphane (SFN). The gene encoding Myr was successfully heterologously expressed in , resulting in the production of 1.

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Objective: To compare the clinical efficacy of endoscopic retrograde cholangiopancreatography (ERCP) combined with laparoscopic cholecystectomy (LC) and laparoscopic common bile duct exploration and lithotomy (LCBDE) in the treatment of cholecystolithiasis combined with bile duct stones.

Methods: From September 2018 to January 2022, 195 patients with cholecystolithiasis complicated with extrahepatic bile duct stones from Department of Department of General Surgery, Shanghai Jiading Central Hospital met the inclusion criteria, including 60 cases in the LC group and 86 cases in the LCBDE group. The general condition, operation success rate, complications and residual stone rate of the two groups were retrospectively analyzed.

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Background: Bladder cancer (BC), a prevalent malignancy in the urinary system, often poses challenges for effective treatment. Immunotherapy, harnessing the immune system, has exhibited promise in early-stage clinical trials. Mucosal associated invariant T (MAIT) cells, a subset of immune cells implicated in various diseases, including certain cancer, have yet to be explored in BC patients.

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Metal nanoparticle (NP) cocatalysts are widely investigated for their ability to enhance the performance of photocatalytic materials; however, their practical application is often limited by the inherent instability under light irradiation. This challenge has catalyzed interest in exploring high-entropy alloys (HEAs), which, with their increased entropy and lower Gibbs free energy, provide superior stability. In this study, 3.

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Article Synopsis
  • * Researchers conducted various tests to examine the strain's antimicrobial resistance, genetic composition, and the stability of the bla-IncX3 plasmid (pNDM-KA3), finding it highly resistant to β-lactam antibiotics while remaining susceptible to other antibiotics.
  • * Whole-genome sequencing revealed the pNDM-KA3 plasmid's structure and similarities to other plasmids in Enterobacterales, highlighting the need for ongoing monitoring of resistance gene dissemination in different bacterial
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Phenylalanine ammonia-lyase (PAL) plays a pivotal role in the biosynthesis of phenylalanine. PAL from Zea mays (ZmPAL2) exhibits a bi-function of direct deamination of L-phenylalanine (L-Phe) or L-tyrosine(-L-Tyr) to form trans-cinnamic acid or p-coumaric acid. trans-Cinnamic acid and p-coumaric acid are mainly used in flavors and fragrances, food additives, pharmaceutical and other fields.

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Polyphenolic compounds have natural antioxidant properties, and their antioxidant activity is usually related to the number and position of hydroxyls. Here, we successfully applied the engineered 4-hydroxyphenylacetate 3-hydroxylases (4HPA3Hs) derived from Pseudomonas aeruginosa to catalyze ferulic acid (FA) synthesis of ortho-hydroxyferulic acid (5-hydroxyferulic acid, 5-OHFA). Through optimization of co-expression, the oxygenase component (PaHpaB) and the reductase component (PaHpaC) in E.

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Understanding the mixing behaviour of elements in a multielement material is important to control its structure and property. When the size of a multielement material is decreased to the nanoscale, the miscibility of elements in the nanomaterial often changes from its bulk counterpart. However, there is a lack of comprehensive and quantitative experimental insight into this process.

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Objective: To explore the combined effect of abdominal obesity and depressive symptoms on the risk to type 2 diabetes, while also assessing the potential influence of various glycemic states and gender on this combined relationship.

Methods: Data is acquired from the China Health and Retirement Longitudinal Study, and 5949 participants were included for analysis. Participants were divided into four groups: neither have abdominal obesity nor depressive symptoms (AO-/DS-), only have depressive symptoms (AO-/DS+), only have abdominal obesity (AO+/DS-), and have both abdominal obesity and depressive symptoms (AO+/DS+).

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Photothermal therapy (PTT), which utilizes nanomaterials to harvest laser energy and convert it into heat to ablate tumor cells, has been rapidly developed for lung tumor treatment, but most of the PTT-related nanomaterials are not degradable, and the immune response associated with PTT is unclear, which leads to unsatisfactory results of the actual PTT. Herein, we rationally designed and prepared a manganese ion-doped polydopamine nanomaterial (MnPDA) for immune-activated PTT with high efficiency. Firstly, MnPDA exhibited 57.

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Macropinocytosis, an evolutionarily conserved endocytic pathway, mediates nonselective bulk uptake of extracellular fluid. It is the primary route for axenic Dictyostelium cells to obtain nutrients and has also emerged as a nutrient-scavenging pathway for mammalian cells. How cells adjust macropinocytic activity in various physiological or developmental contexts remains to be elucidated.

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4-Hydroxyphenylacetate 3-hydroxylase (4HPA3H) is a long-known class of two-component flavin-dependent monooxygenases from bacteria, including an oxygenase component (EC 1.14.14.

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Article Synopsis
  • A new nonlinear holographic technique can process optical information at newly generated frequencies, beneficial for laser displays, security, and image recognition.
  • A popular method uses periodically poled lithium niobate (LN) crystals, but traditional methods limit pixel size and field-of-view (FOV) to several micrometers and degrees, respectively.
  • This study demonstrates a high-resolution LN hologram with 200 nm pixel size and FOV over 120°, achieving better image quality through techniques like Fourier transform and multiple diffraction orders.
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Objective: Cholangiocarcinoma (CHOL) is a malignant disease that affects the digestive tract, and it is characterized by a poor prognosis. This research sought to explore the involvement of cuproptosis-related lncRNAs (CRLs) in the prognostic prediction and immune infiltration of cholangiocarcinoma.

Methods: The expression profiles and clinical data of CHOL patients were acquired from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases, and CRLs were defined via co-expression analysis.

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Computational design advances enzyme evolution and their use in biocatalysis in a faster and more efficient manner. In this study, a synergistic approach integrating tunnel engineering, evolutionary analysis, and force-field calculations has been employed to enhance the catalytic activity of D-lactonohydrolase (D-Lac), which is a pivotal enzyme involved in the resolution of racemic pantolactone during the production of vitamin B5. The best mutant, N96S/A271E/F274Y/F308G (M3), was obtained and its catalytic efficiency (k/K) was nearly 23-fold higher than that of the wild-type.

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The interfacial interactions between epithelia and cancer cells have profound relevance for tumor development and metastasis. Through monolayer confrontation of MCF10A (nontumorigenic human breast epithelial cells) and MDA-MB-231 (human epithelial breast cancer cells) cells, we investigate the epithelial-cancerous interfacial interactions at the tissue level. We show that the monolayer interaction leads to competitive interfacial morphodynamics and drives an intricate spatial organization of MCF10A cells into multicellular finger-like structures, which further branch into multiple subfinger-like structures.

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