Our understanding of biological role of glycans O-sulfation remains at the level of beginners due to microheterogeneity, lability and other difficulties of exact structural assignment. Partially, problem of functional investigations, especially determination of glycoepitope specificity of carbohydrate-binding proteins could be solved with the help of synthetic glycans of certain structure. Here we summing up our synthetic efforts in creation of synthetic O-sulfatome, and bring together all the synthesized in our group sulfated glycans, both existing in nature, yet undiscovered but biochemically licit, and completely unnatural. All glycans have aminoalkyl spacer group allowing immobilization on a chip. We exemplify the capabilities of O-sulfoglycan microarray (containing >70 ligands) for profiling human natural antibodies; for a number of glycans O-sulfation dramatically changes interaction with human antibodies.
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http://dx.doi.org/10.1016/j.carres.2017.03.015 | DOI Listing |
NPJ Antimicrob Resist
August 2023
Department of Biochemistry and Structural Biology, University of Texas Health San Antonio, San Antonio, 78229, TX, USA.
Resistance to nirmatrelvir (Paxlovid) has been shown by multiple groups and may already exist in clinical SARS-CoV-2 isolates. Here a robust cell-based assay is used to determine the relative potencies of nirmatrelvir, ensitrelvir, and FB2001 against a panel of SARS-CoV-2 main protease (M) variants. The results reveal that these three drugs have at least partly distinct resistance mutation profiles and raise the possibility that the latter compounds may be effective in some instances of Paxlovid resistance and vice versa.
View Article and Find Full Text PDFTransl Psychiatry
January 2025
Program in Computational Biology and Bioinformatics, Yale University, New Haven, CT, USA.
Brain anatomy plays a key role in complex behaviors and mental disorders that are sexually divergent. While our understanding of the sex differences in the brain anatomy remains relatively limited, particularly of the underlying genetic and molecular mechanisms that contribute to these differences. We performed the largest study of sex differences in brain volumes (N = 33,208) by examining sex differences both in the raw brain volumes and after controlling the whole brain volumes.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Gynecology & Obstetrics, Qilu Hospital of Shandong University, Jinan, China.
Endometriosis (EM) is a chronic disease that can cause pain and infertility in patients. As is well known, immune cell infiltrations (ICIs) play important roles in the pathogenesis of EM. However, the pathogenesis and biomarkers of EM that can be used in clinical practice and their relationship with ICIs still need to be elucidated.
View Article and Find Full Text PDFAesthetic Plast Surg
January 2025
Medical Research Inc., Wonju, Korea.
The pursuit of aesthetically pleasing shoulder contours, particularly those characterised by a sharp, angular definition, has gained significant traction in Southeast Asia. Traditionally, neuromodulators have been used to achieve these results by inducing muscle atrophy, particularly in the trapezius muscles. However, this approach can carry potential risks, such as compromised muscle function and spinal instability.
View Article and Find Full Text PDFLasers Med Sci
January 2025
Department of Dermatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
Melasma significantly impacts life quality, and while various laser therapies show promise, rigorous comparative studies, especially between the novel Picosecond Alexandrite Laser (PSAL) and the traditional combined modality of Q-switched and Long-pulse Nd: YAG Lasers (QLNYL), are notably lacking. This study aims to fill this gap by evaluating the efficacy and safety of these modalities, providing insights into their comparative advantages for clinical practice. In a prospective, evaluator-blinded study, 40 participants with Fitzpatrick Skin Types (FST) III and IV underwent three treatment sessions at four-week intervals with either PSAL or QLNYL.
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