Publications by authors named "Yunyun Quan"

Photodynamic therapy (PDT), operates through a distinctive reactive oxygen species (ROS)-mediated cytotoxic mechanism, offering therapeutic potential against malignant tumors and bacterial infections. The development of multifunctional photosensitizers (PSs) capable of simultaneously exhibiting potent antitumor and antibacterial activities represents a promising yet challenging frontier in PDT research. Herein, three donor-π bridge-acceptor (D-π-A) aggregation induced emission (AIE) photosensitizers TPTM, TPTP and TPTQ with type I and type II ROS production abilities were successfully constructed by acceptor engineering strategy.

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Background: The prevalence of nonalcoholic steatohepatitis (NASH) is increasing every year, and there are very few approved therapeutic agents globally, making the search for potentially targeted therapeutic agents important.

Aims: To investigate the anti-NASH effect of tetrahydrocurcumin (THC) and to further study the biological mechanism of THC anti-NASH from the perspective of intestinal flora.

Methods: Seven-week-old female male C57BL/6J mice were randomly divided into two batches of six groups: (1) control group, (2) model group, (3) positive control group, (4) THC low-dose group, (5) THC medium-dose group, and (6) THC high-dose group.

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Objective: To investigate the anti-inflammatory effect of rutaecarpine (RUT) on monosodium urate crystal (MSU)-induced murine peritonitis in mice and further explored the underlying mechanism of RUT in lipopolysaccharide (LPS)/MSU-induced gout model in vitro.

Methods: In MSU-induced mice, 36 male C57BL/6 mice were randomly divided into 6 groups of 8 mice each group, including the control group, model group, RUT low-, medium-, and high-doses groups, and prednisone acetate group. The mice in each group were orally administered the corresponding drugs or vehicle once a day for 7 consecutive days.

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Tetrahydrocurcumin (THC), a curcumin derivative, shows potential in oncology and neurology. It regulates NF-κB, reduces inflammation, promotes cancer cell apoptosis, inhibits tumor angiogenesis, and enhances antioxidants, aiding in treating inflammation-related cancers. In neurology, THC's anti-inflammatory and antioxidant properties protect neurons, reduce neuroinflammation, and support autophagy for cellular debris clearance, with its blood-brain barrier penetration offering a neuroprotective edge.

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Developing versatile photosensitizers capable of selectively eliminating pathogens over normal cells is an appealing yet highly challenging task. Herein, a novel strategy by exploiting the cationic and amphiphilic synergistic mechanism is introduced to synthesize four aggregation-induced emission (AIE)-active cationic antibacterial photosensitizers (PSs) TSPy-CH, MeO-TSPy-Bu, MeO-TSPy-Va and MeO-TSPy-CH. The four PSs generated both type I and type II reactive oxygen species (ROS) under white light irradiation.

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The precise distribution and subcellular localization of photosensitizers (PSs) play a crucial role in maximizing the utilization of reactive oxygen species (ROS) and enhancing photodynamic therapy (PDT). However, the therapeutic efficacy of PDT is significantly compromised by the hypoxic microenvironment, particularly in malignant tumors. To address these challenges, we designed and synthesized three donor-donor-π-bridge-acceptor (D-D-π-A) type aggregation-induced emission (AIE) PSs: TCM-OTs, TCM-OH, and TCPy-OH.

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Multifunctional type-I photosensitizers (PSs) for hydrogen sulfide (HS) detection and photodynamic therapy (PDT) of hypoxia tumors exhibits attractive curative effect but remains a challenging task. Herein, a mitochondria targeted aggregation-induced emission (AIE) photosensitizer TSPy-SS-P was designed and synthesized, which could be used for HS detection and simultaneously type I and type II PDT. TSPy-SS-P had excellent selectivity and anti-interference abilities for endogenous and exogenous HS detection in tumor cells.

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Background: Xiaojin Pill (XJP) is a traditional Chinese medicine prescribed for treating benign prostatic hyperplasia (BPH). It has been proven to have multiple effects, such as regulating sex hormone levels, exhibiting anti-tumor, anti-inflammatory, analgesic, and anti-platelet aggregation properties, and improving immunity. However, the material basis of XJP's therapeutic effect on BPH and its metabolic process remains to be clarified.

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Background: Photodynamic therapy (PDT) is a pioneering and effective anticancer modality with low adverse effects and high selectivity. Hypochlorous acid or hypochlorite (HClO/ClO) is a type of inflammatory cytokine. The abnormal increase of ClO in tumor cells is related to tumor pathogenesis and may be a "friend" for the design and synthesis of responsive phototherapy agents.

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Bacterial infections are closely correlated with the genesis and progression of cancer, and the elimination of cancer-related bacteria may improve the efficacy of cancer treatment. However, the combinatorial therapy that utilizes two or more chemodrugs will increase potential adverse effects. Image-guided photodynamic therapy is a highly precise and potential therapy to treat tumor and microbial infections.

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Background: Insulin resistance (IR) is considered the pathogenic driver of diabetes, and can lead to obesity, hypertension, coronary artery disease, metabolic syndrome, and other metabolic disorders. Accumulating evidence indicates that the connection between gut microbiota and IR. This bibliometric analysis aimed to summarize the knowledge structure of gut microbiota in IR.

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Background: Cancer as a leading cause of premature death worldwide has become a major threat to human health due to the high incidence and mortality. Monitoring tumor markers are reliable and significantly important for early detection of cancers. In complex biological systems, it is of great urgency but still remains challenging to conceive a fluorescent probe with multiple tumor markers detection property.

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Cysteine (Cys) and homocysteine (Hcy) are important biothiols in living organisms. They play important roles in a variety of physiological and pathological processes. Therefore, it is very important to design an optical probe for the selective detection of Cys/Hcy.

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(turmeric), and are derived from the species, and have gradually become three of the most commonly used medicinal herbs in China due to their different origins, processing methods and medicinal part. These three herbs have certain similarities in morphology, chemical composition, and pharmacological effects. All three of these herbs contain curcuminoids and volatile oil compounds, which exhibit anti-inflammatory, anti-tumor, antioxidant, and neuroprotective properties, although modern clinical applications have their own requirements.

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Wuwei Shexiang Pill (WSP) is a Tibetan traditional medicine, which has been demonstrated to exhibit potent anti-inflammatory and anti-gout effects. However, the specific pharmacological mechanism is not elucidated clearly. In the present study, liquid chromatography-mass spectrometry (LC-MS)-based metabolomics was applied to investigate the alteration of serum metabolites induced by WSP treatment in MSU-induced gouty rats.

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Objective: To examine the anti-inflammatory effects and potential mechanisms of polypeptide from Moschus (PPM) in lipopolysaccharide (LPS)-induced THP-1 macrophages and BALB/c mice.

Methods: The polypeptide was extracted from Moschus and analyzed by high-performance liquid chromatography and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Subsequently, LPS was used to induce inflammation in THP-1 macrophages and BALB/c mice.

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Angiogenesis and metastasis are major factors affecting the growth and invasion of triple negative breast cancer (TNBC). A phenanthroline copper(II) complex CPT8 modified with an alkyl chain-linked triphenylphosphonium group showed potent antiproliferative activity against a series of cancer cells including TNBC MDA-MB-231 cells. CPT8 induced mitophagy through activation of PINK1/Parkin and BNIP3 pathways in cancer cells due to damage to mitochondria.

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Type 2 diabetes mellitus (T2DM) is a metabolic disease with persistent hyperglycemia primarily caused by insulin resistance (IR). The number of diabetic patients globally has been rising over the past decades. Although significant progress has been made in treating diabetes mellitus (DM), existing clinical drugs for diabetes can no longer fully meet patients when they face complex and huge clinical treatment needs.

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The main objective of this study was to investigate the alterations in the gut microbiota (GM) of pulmonary fibrosis (PF) mice induced by bleomycin (BLM) with its underlying mechanisms. BLM was docked with the targets of TGF-β/SMAD and caspase-3 pathways using the molecular docking technique. HE staining and Masson staining were applied to observe the histopathological changes in the pulmonary tissues.

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Background: Gout is a common crystal-related arthritis caused by the deposition of monosodium urates (MSU). Tibetan medicine Wuwei Shexiang Pills (WSP) has been demonstrated to exhibit anti-inflammatory, antihyperuricemia, and antigout activities. However, the underlying mechanism is unknown.

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Yi Yin, a famous medical scientist and culinary master in the late Xia Dynasty and early Shang Dynasty, developed the Chinese medicinal liquids and Chinese medicinal prescriptions emerged after that. Chinese medicinal prescriptions have attracted much attention because of their unique advantages in the treatment of chronic multifactorial diseases, representing an important direction of drug discovery in the future. Yiyin decoction theory is the superior form of personalized combined medication with advanced consciousness.

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The direct functionalization of inert C-H bonds is regarded as one of the most powerful strategies to form various chemical bonds and construct complex structures. Although significant advancements have been witnessed in the area of transition metal-catalyzed functionalization of inert C-H bonds, several challenges, such as the utilization and removal of expensive transition metal complexes, limited substrate scope and large-scale capacity, and poor atom economy in removing guiding groups coordinated to the transition metal, cannot fully fulfill the high standard of modern green chemistry nowadays. Over the past decades, due to its inherent advantage compared with a transition metal-catalyzed strategy, the hydride shift activation that applies "-amino effect" into the direct functionalization of the common and omnipresent C(sp)-H bonds adjacent to -amines has attracted much attention from the chemists.

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Bulbus fritillariae cirrhosae (BFC) is one of the most used Chinese medicines for lung disease, and exerts antitussive, expectorant, anti-inflammatory, anti-asthmatic, and antioxidant effects, which is an ideal therapeutic drug for respiratory diseases such as ARDS, COPD, asthma, lung cancer, and pulmonary tuberculosis. Through this review, it is found that the therapeutic mechanism of BFC on respiratory diseases exhibits the characteristics of multi-components, multi-targets, and multi-signaling pathways. In particular, the therapeutic potential of BFC in terms of intervention of "cytokine storm", STAT, NF-κB, and MAPK signaling pathways, as well as the renin-angiotensin system (RAS) that ACE is involved in.

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Our paper investigated the effect of berberine on the diabetic retinopathy (DR) in transgenic mice and explored its possible mechanisms. During chronic intragastric administration for ten weeks, berberine could decrease the levels of fasting blood glucose, TC and TG without hepatotoxicity. Moreover, berberine could protect the retinal morphology against the hyperglycemic insults and decrease glycogen accumulation, the contents of TNF-α and IL-1β in the retinas, as demonstrated by HE staining, PAS staining and ELISA kits, respectively.

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