Cell Mol Biol (Noisy-le-grand)
July 2023
The formation of hypertrophic scar and keloid is considered to be a very complex pathological process. Our previous studies have shown that miR-15a-5p is an important miRNA in HTS tissues, and its expression level is significantly increased. Therefore, the potential mechanism of action of miR-15a-5p in scarring arouses our interest.
View Article and Find Full Text PDFReprogramming the immunologically "cold" environment of solid tumors is currently becoming the mainstream strategy to elicit powerful and systemic anticancer immunity. Here, a facile and biomimetic nano-immunnoactivator (CuS/Z@M ) is detailed by engineering a Zn -bonded zeolitic imidazolate framework-8 (ZIF-8) with CuS nanodots (NDs) and cancer cell membrane for amplified near-infrared-II (NIR-II) photothermal immunotherapy via Zn metabolic modulation. Taking advantage of the NIR-II photothermal effect of CuS NDs and the acidic responsiveness of ZIF-8, CuS/Z@M rapidly causes intracellular Zn pool overload and disturbs the metabolic flux of 4T1 cells, which effectively hamper the production of heat shock proteins and relieve the resistance of photothermal therapy (PTT).
View Article and Find Full Text PDFIn the past decade, mass spectrometry (MS) has been widely used for a broad range of on-site applications. This is largely attributed to the rapid advancement of technologies, such as ambient ionization and mass spectrometer miniaturization. Here, we report the development of the temperature-tuning desorption ionization (TTDI) method for versatile on-site applications using a miniature MS system.
View Article and Find Full Text PDFMicrobiol Spectr
August 2023
Bovine herpesvirus 1 (BoHV-1), an important bovine viral pathogen, causes severe disease in the upper respiratory tract and reproductive system. Tonicity-responsive enhancer-binding protein (TonEBP), also known as nuclear factor of activated T cells 5 (NFAT5), is a pleiotropic stress protein involved in a range of cellular processes. In this study, we showed that the knockdown of NFAT5 by siRNA increased BoHV-1 productive infection and overexpression of NFAT5 via plasmid transfection decreased virus production in bovine kidney (MDBK) cells.
View Article and Find Full Text PDFChemotherapy remains the mainstay of cancer treatment, and doxorubicin (DOX) is recommended as a first-line chemotherapy drug against cancer. However, systemic adverse drug reactions and multidrug resistance limit its clinical applications. Here, a tumor-specific reactive oxygen species (ROS) self-supply enhanced cascade responsive prodrug activation nanosystem (denoted as PPHI@B/L) was developed to optimize multidrug resistance tumor chemotherapy efficacy while minimizing the side effects.
View Article and Find Full Text PDFA dual-loaded multi-targeted drug delivery nanosystem was constructed to simultaneously load paclitaxel (PTX) and 5-fluorouracil (5-FU) for targeted delivery and sustained release at tumor sites. Hollow mesoporous silica nanoparticles (HMSNs) were prepared by the inverse microemulsion method, then modified with folic acid and pH- and temperature-responsive materials, co-loaded with PTX and 5-FU, and finally encapsulated into lipid membranes. The obtained nanosystem was selectively internalized by human breast cancer MCF-7 cells that overexpress folate receptors through an energy-dependent process, and it released both drugs in a simulated tumor microenvironment.
View Article and Find Full Text PDFPerspect Psychol Sci
July 2023
Discourse on gender diversity tends to overlook differences across levels of hierarchy (e.g., students, faculty, and editors) and critical dimensions (e.
View Article and Find Full Text PDF[This corrects the article DOI: 10.1016/j.bioactmat.
View Article and Find Full Text PDFThe combination of photothermal therapy (PTT) and chemotherapy is considered a promising tumor treatment modality, nevertheless, cellular resistance induced by heat shock proteins (HSPs) overexpressed in tumor cells will restrict the therapeutic effect. Herein, a multifunctional nanobeacon DOX/HCuS@PDA-MB (D/CP-MB) with a scout function for HSP90 mRNA fluorescence detection and near-infrared (NIR) triggered drug release for sensitizing chemo-photothermal therapy, is proposed. In the theranostic nanobeacons, HSP90MBs not only enable fluorescence detection of intracellular HSP90 mRNAs, but also downregulate the expression of HSP90 to reduce cell resistance.
View Article and Find Full Text PDFDiversity is the fuel of innovation. Global diversity-geographical or international diversification-is indispensable for developing a true psychological science of human beings but remains poorly understood. We surveyed 68 top psychology journals in 10 subdisciplines and examined the global diversity of authors, editors (i.
View Article and Find Full Text PDFTumor microenvironment (TME)-oriented nanomedicine emerges as an efficient routine to greatly improve the efficiency of cancer treatment. The typical feature of hypoxia in TME remains as the main obstacle of many therapeutics like photodynamic therapy. Herein, a specific two-dimensional (2D) phototheranostics (GO-MnO@tLyP-1/Ce6, denoted as GMtC) with the function of oxygen self-producing and tumor barrier-breaking was detailed by integrating the nanoenzyme MnO colloids, tumor homing-penetrating peptide tLyP-1 and photosensitizer chlorin e6 (Ce6) to tackle the hypoxic tumors.
View Article and Find Full Text PDFTherapeutic approaches of combining conventional photodynamic therapy (PDT) with other adjuvant treatments to sensitize PDT represent an appealing strategy. Herein, a novel synergetic "nanobomb" strategy based on glutathione (GSH)-responsive biodegradation was proposed to effectively destroy tumors expeditiously and accurately. This "nanobomb" was rationally constructed via the simultaneous encapsulation of methylene blue (MB) and l-arginine (L-Arg) into polyethylene glycol (PEG) modified mesoporous organosilicon nanoparticles (MON).
View Article and Find Full Text PDFThe clinical outcomes of cancer nanovaccine have been largely impeded owing to the low antigen-specific T cell response rate and acquired resistance caused by the immunosuppressive tumor microenvironment (TME). Here, we reported a tumor acidity-responsive nanovaccine to remodel the immunosuppressive TME and expand the recruitment of tumor infiltrating lymphocytes (TILs) using hybrid micelles (HM), which encapsulated colony stimulating factor 1 receptor (CSF1-R) inhibitor BLZ-945 and indoleamine 2,3-dioxygenase (IDO) inhibitor NLG-919 in its core and displayed a model antigen ovalbumin (OVA) on its surface (denoted as BN@HM-OVA). The bioactive nanovaccine is coated with a polyethylene glycol (PEG) shell for extending nanoparticle circulation.
View Article and Find Full Text PDFNanomedicine enabled cancer combination immunotherapy not only sufficiently activates the host immune system, but also reprograms the immunosuppressive microenvironment, representing a new generation approach to treat cancer. Herein, we demonstrated a targeted photo- and immune-active nanoplatform termed NLG919@HA-Ce6 to simultaneously elicit efficient immunogenic cell death (ICD) using the photosensitizer Ce6 and modulate the tryptophan metabolic pathway using an indoleamine 2,3-dioxygenase (IDO) inhibitor NLG919 for the combined photodynamic therapy (PDT) and checkpoint blockade immunotherapy. Against the triple-negative and poorly immunogenic 4T1 breast cancer model, the stable spherical nanomicelle NLG919@HA-Ce6 selectively killed tumour cells the toxic singlet oxygen upon laser excitation, thus triggering a potent antitumor immune response, as seen the obvious CRT exposure, ATP release, dendritic cell maturation, .
View Article and Find Full Text PDFThe combination of magnetic hyperthermia and chemotherapy within a nanosystem is thought to be a promising approach for cancer therapies. However, the nonspecific accumulation and fast clearance of magnetic nanoparticles in the physiological environment limited their further biomedical applications. Herein, we report a highly selective theranostic nanocomplex, ZIPP-Apt:DOX/siHSPs, built with superparamagnetic zinc-doped iron oxide nano-octahedral core, cationic PAMAM dendrimer, and functional surface modifications such as PEG, AS1411 aptamer, and fluorescent tags (FITC or Cy5.
View Article and Find Full Text PDFThe exploration of an intelligent multifunctional imaging-guided therapeutic platform is of great significance because of its ideal delivery efficiency and controlled release. In this work, a tumor microenvironment (TME)-responsive nanocarrier (denoted as MB@MSP) is designed for on-demand, sequentially release of a short D-peptide antagonist of programmed cell death-ligand 1 (named as PPPA-1) and a photosensitizer methylene blue (MB). FeO-Au located in the core of MB@MSP is used as a magnetic resonance imaging and micro-computed tomography imaging contrast agent for noninvasive diagnosis of solid tumors and simultaneous monitoring of drug delivery.
View Article and Find Full Text PDFThe Biopharmaceutics Classification System (BCS), which classifies bioactive molecules based on solubility and permeability, is widely used to guide new drug development and drug formulation, as well as predict pharmacokinetics. Here we performed computer simulations to study correlations between a molecule's structure and its BCS classification. A total of 411 small molecules were assigned to BCS categories based on published drug data, and their Pybel-FP4 fingerprints were extrapolated.
View Article and Find Full Text PDFA polymer-based nanoparticle was constructed to target sorafenib delivery to colorectal carcinoma cells and decrease the side effects of the drug. Sorafenib-loaded nanoparticles (S-NPs) based on PEG-PLGA were prepared using a double emulsion solvent evaporation method. The properties of S-NPs were evaluated and then their effects on the viability of colorectal cancer cells and normal human cells were assessed.
View Article and Find Full Text PDFCombination treatment through simultaneous delivery of anticancer drugs and gene with nano-formulation has been demonstrated to be an elegant and efficient approach for colorectal cancer therapy. Recently, sorafenib being studied in combination therapy in colorectal cancer (CRC) attracted attention of researchers. On the basis of our previous study, pigment epithelium-derived factor (PEDF) loaded nanoparticles showed good effect on CRC in vitro and in vivo.
View Article and Find Full Text PDFIn this study, we investigated whether the combination of cyanidin-3--glucoside chloride and luteolin could inhibit the growth of HCT-8 colon and MCF-7 breast carcinoma cells, and whether the effect of the combination was greater than the effect of either drug on its own. Growth inhibition was assessed using the CCK-8 assay, level of apoptosis and cell cycle distribution were determined using flow cytometry, and the mechanism of apoptosis induction was explored using a colorimetric assay of caspases-3 and -9. Experiments indicated that combination treatment inhibited proliferation and increased apoptosis in both cell lines to a greater extent than either drug on its own.
View Article and Find Full Text PDFEvodiamine (EVO) and Berberine (BBR), from Euodiae Fructus and Coptidis rhizoma, have been used as an herbal medicine pair in traditional Chinese medicine to exert synergistic antitumor effects against various types of tumor cells. However, their clinical use is limited by their poor solubility and adverse toxic side effects. Mesoporous silica nanoparticles (MSNs) possess excellent properties such as a readily functionalized surface, prominent biocompatibility, and huge specific surface area for loading with hydrophobic and hydrophilic drug.
View Article and Find Full Text PDFA positive and a negative feedback loop can induce bistability and oscillation, respectively, in biological networks. Nevertheless, they are frequently interlinked to perform more elaborate functions in many gene regulatory networks. Coupled positive and negative feedback loops may exhibit either oscillation or bistability depending on the intensity of the stimulus in some particular networks.
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