Publications by authors named "Guo-Qing Fan"

Background: Glycoprotein non-metastatic melanoma B (GPNMB)/osteoactivin was first identified in the human melanoma cell lines. GPNMB plays a key role in the anti-inflammatory and antioxidative functions as well as osteoblast differentiation, cancer progression, and tissue regeneration. Recently, GPNMB was used as an anti-aging vaccine for mice.

View Article and Find Full Text PDF

Background: Diabetes mellitus (DM), a metabolic disease that has attracted significant research and clinical attention over the years, can affect the eye structure and induce cataract in patients diagnosed with DM. Recent studies have indicated the relationship between glycoprotein non-metastatic melanoma protein B (GPNMB) and DM and DM-related renal dysfunction. However, the role of circulating GPNMB in DM-associated cataract is still unknown.

View Article and Find Full Text PDF

Mesencephalic astrocyte-derived neurotrophic factor (MANF) is a novel evolutionarily conserved protein present in both vertebrate and invertebrate species. MANF shows distinct structural and functional properties than the traditional neurotrophic factors (NTF). MANF is composed of an N-terminal saposin-like lipid-binding domain and a C-terminal SAF-A/B, Acinus and PIAS (SAP) domain connected by a short linker.

View Article and Find Full Text PDF

Inefficient tumour treatment approaches often cause fatal tumour metastases. Here, we report a biomimetic multifunctional nanoplatform explicitly engineered with a Co-based metal organic framework polydopamine heterostructure (MOF-PDA), anethole trithione (ADT), and a macrophage membrane. Co-MOF degradation in the tumour microenvironment releases Co, which results in the downregulation of HSP90 expression and the inhibition of cellular heat resistance, thereby improving the photothermal therapy effect of PDA.

View Article and Find Full Text PDF
Article Synopsis
  • - The study investigates how a long-term high-fat, high-fructose (HFHF) diet affects the pancreas and its role in type 2 diabetes (T2DM) by comparing HFHF-fed rats to those on a normal diet over 3 and 18 months.
  • - After 3 months on the HFHF diet, rats showed increased pancreatic islet size, but after 18 months, the islets became irregular and shrank, indicating potential dysfunction of insulin production.
  • - Early signs of oxidative stress were observed before inflammation in the HFHF diet group, suggesting that changes at the cellular level could contribute to the deterioration of pancreatic function related to T2DM.
View Article and Find Full Text PDF

Background: As an age-related syndrome, frailty may play a central role in poor health among older adults. Sarcopenia overlaps with the physical domain of frailty, and most existing studies have analyzed the associated factors of frailty and sarcopenia as an isolated state. Perturbations in metabolism may play an important role in the presence of frailty or sarcopenia; however, the metabolites associated with frailty, especially overlapping with sarcopenia remain unclear.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates systemic RNA oxidative damage during infections caused by a specific pathogen, focusing on the changes in blood cells and inflammatory responses in a rat model of acute intestinal infection.
  • Findings reveal that the infection leads to significant increases in various immune markers and cytokines, and notably, urinary levels of 8-oxo-7,8-dihydroguanosine (8-oxo-Gsn), which indicate RNA oxidation.
  • The results suggest that urinary 8-oxo-Gsn could serve as a promising biomarker for determining the severity and outlook of infections caused by this pathogen, as levels return to normal upon recovery.
View Article and Find Full Text PDF

More and more evidence support the concept that RNA oxidation plays a substantial role in the progress of multiple diseases; however, only a few studies have reported RNA oxidation caused by microbial pathogens. Urinary 8-oxo-7,8-dihydroguanosine (8-oxo-Gsn) and 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxo-dGsn), which are broadly used as indicators of oxidative damage of RNA and DNA, were analyzed in this study to determine which can be used as a biomarker of infection in challenged with (). In this work, 24 specific-pathogen-free (SPF) male SD rats were randomly divided into two groups: an infection group and a phosphate-buffered saline (PBS) control group.

View Article and Find Full Text PDF

MutT Homolog 1 (MTH1) is a mammalian 8-oxodGTPase for sanitizing oxidative damage to the nucleotide pool. Nudix type 5 (NUDT5) also sanitizes 8-oxodGDP in the nucleotide pool. The role of MTH1 and NUDT5 in non-small-cell lung cancer (NSCLC) progression and metastasis remains unclear.

View Article and Find Full Text PDF