Publications by authors named "Qi-Xuan Kuang"

Article Synopsis
  • * Transcriptome analysis suggests that one of these compounds (6) may enhance T-cell immunity and has demonstrated strong potential in inhibiting PD-1/PD-L1 interactions, which are critical in cancer treatment.
  • * Compound 6 shows significant anticancer effects by enhancing T-cell activity and modulating key signaling pathways, making it a promising candidate for future tumor immunotherapy research.
View Article and Find Full Text PDF

Excessive inflammation results in severe tissue damage as well as serious acute or chronic disorders, and extensive research has focused on finding new anti-inflammatory hit compounds with safety and efficacy profiles from natural products. As promising therapeutic entities for the treatment of inflammation-related diseases, fusaproliferin and its analogs have attracted great interest. However, the underlying anti-inflammatory mechanism is still poorly understood and deserves to be further investigated.

View Article and Find Full Text PDF

Excessive inflammation causes chronic diseases and tissue damage. Although there has been drug treatment, its side effects are relatively large. Searching for effective anti-inflammatory drugs from natural products has become the focus of attention.

View Article and Find Full Text PDF

Transcriptome analysis is shown to be an effective strategy to understand the potential function of natural products. Here, it is reported that 11 previously undescribed hydroanthraquinones [nigroquinones A-K (-)], along with eight known congeners, were isolated from . Their structures were elucidated by interpreting spectroscopic and spectrometric data including high-resolution mass spectra and nuclear magnetic resonance.

View Article and Find Full Text PDF

Three previously undescribed polyketides [proliferatin A-C (1-3)] with anti-inflammatory activity were isolated from Fusarium proliferatum. 1-3 attenuated the production of inflammatory signal messengers including nitric oxide (NO), reactive oxygen species, proinflammatory cytokines interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β), as well as the related proteins nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) in lipopolysaccharide (LPS)-induced RAW264.7 macrophages.

View Article and Find Full Text PDF

Overexpression of various pro-inflammatory factors in microglial cells tends to induce neurodegenerative diseases, for which there is no effective therapy available. Aureonitol () and seven analogues, including six previously undescribed [elatumenol A-F (-, -, respectively)], along with two new orsellinic acid esters [elatumone A and B ( and )], were isolated from . The structures of the compounds were established through comprehensive analysis of spectroscopic data, including high-resolution mass spectra and one- and two-dimensional NMR, and absolute configurations determined by the Mosher method, dimolybdenum tetraacetate-induced circular dichroism, and theoretical calculations including electronic circular dichroism and NMR.

View Article and Find Full Text PDF

Two new phenolic glycosides 7,8-threo-4,7,9,9'-tetrahydroxy-3-methoxy-8--4'-neolignan-3'--(3''-α-L-arabinofuranosyl)--D-glucopyranoside. (), 4-(4'-hydroxyphenyl)-2-butanone-4''--(6--D-xylosyl)-β--glucopyranoside (), along with two known related analogues 7,8-threo-4,7,9,9'-tetrahydroxy-3-methoxy-8--4'-neolignan-3'--β--glucopyranoside (), 4-(4'-hydroxyphenyl)-2-butanone-4'--β--glucopyranoside () were obtained from the roots of ffi. Combined with acid hydrolysis derivatization, the absolute configurations of these new compounds were elucidated by comprehensive analyses of spectroscopic data including nuclear magnetic resonance (NMR), electrospray ionization high resolution mass (HRESIMS) as well as circular dichroism (CD).

View Article and Find Full Text PDF