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  1. Article

    Open Access

    Tolerable glycometabolic stress boosts cancer cell resilience through altered N-glycosylation and Notch signaling activation

    Chronic metabolic stress paradoxically elicits pro-tumorigenic signals that facilitate cancer stem cell (CSC) development. Therefore, elucidating the metabolic sensing and signaling mechanisms governing cancer...

    Shungo Iwamoto, Takashi Kobayashi, Hisatoshi Hanamatsu in Cell Death & Disease (2024)

  2. Article

    Open Access

    Higher-order rich-club phenomenon in collaborative research grant networks

    Modern scientific work, including writing papers and submitting research grant proposals, increasingly involves researchers from different institutions. In grant collaborations, it is known that institutions i...

    Kazuki Nakajima, Kazuyuki Shudo, Naoki Masuda in Scientometrics (2023)

  3. No Access

    Chapter and Conference Paper

    Random Hypergraph Model Preserving Two-Mode Clustering Coefficient

    Real-world complex systems often involve interactions among more than two nodes, and such complex systems can be represented by hypergraphs. Comparison between a given hypergraph and randomized hypergraphs tha...

    Rikuya Miyashita, Kazuki Nakajima, Mei Fukuda in Big Data Analytics and Knowledge Discovery (2023)

  4. Article

    Open Access

    Author Correction: Analysis of O-glycoforms of the IgA1 hinge region by sequential deglycosylation

    Yukako Ohyama, Hisateru Yamaguchi, Kazuki Nakajima, Tomohiro Mizuno in Scientific Reports (2021)

  5. No Access

    Article

    High-throughput N-glycan screening method for therapeutic antibodies using a microchip-based DNA analyzer: a promising methodology for monitoring monoclonal antibody N-glycosylation

    N-Glycosylation of therapeutic antibodies is a critical quality attribute (CQA), and the micro-heterogeneity affects the biological and physicochemical properties of antibodies. Therefore, the profiling of N-glyc...

    Mitsuhiro Kinoshita, Kazuki Nakajima in Analytical and Bioanalytical Chemistry (2021)

  6. Article

    Open Access

    Measurement error of network clustering coefficients under randomly missing nodes

    The measurement error of the network topology caused by missing network data during the collection process is a major concern in analyzing collected network data. It is essential to clarify the error between t...

    Kazuki Nakajima, Kazuyuki Shudo in Scientific Reports (2021)

  7. Article

    Open Access

    Analysis of O-glycoforms of the IgA1 hinge region by sequential deglycosylation

    A common renal disease, immunoglobulin A (IgA) nephropathy (IgAN), is associated with glomerular deposition of IgA1-containing immune complexes. IgA1 hinge region (HR) has up to six clustered O-glycans consisting...

    Yukako Ohyama, Hisateru Yamaguchi, Kazuki Nakajima, Tomohiro Mizuno in Scientific Reports (2020)

  8. No Access

    Chapter

    Structural Analysis of Glycans (Analytical and Detection Methods)

    Glycoprotein, Glycolipid, Structural characterization

    Kazuki Nakajima, Kazuo Takahashi in Glycoscience: Basic Science to Applications (2019)

  9. No Access

    Reference Work Entry In depth

    Profiling of Glucosylceramides by Liquid Chromatography-Tandem Mass Spectrometry

    Cell membrane surface glycosphingolipids (GSLs), which are synthesized from glucosylceramide (GlcCer) by the enzymatic action of glucosylceramide synthase (GlcT-1), play fundamental roles in many cellular proc...

    Kazuki Nakajima, Ayako Kohyama-Koganeya in Glycoscience: Biology and Medicine (2015)

  10. No Access

    Reference Work Entry In depth

    Simultaneous Quantification of Nucleotide Sugar Metabolism by LC and LC-MS

    Cellular glycosylation plays an important role in many biological processes, as well as in disease states such as diabetes and cancer. Nucleotide sugar s are donor substrates of glycosyltransferases and their ...

    Kazuki Nakajima, Naoyuki Taniguchi in Glycoscience: Biology and Medicine (2015)

  11. No Access

    Living Reference Work Entry In depth

    Profiling of Glucosylceramides by Liquid Chromatography-Tandem Mass Spectrometry

    Cell membrane surface glycosphingolipids (GSLs), which are synthesized from glucosylceramide (GlcCer) by the enzymatic action of glucosylceramide synthase (GlcT-1), play fundamental roles in many cellular proc...

    Kazuki Nakajima, Ayako Kohyama-Koganeya in Glycoscience: Biology and Medicine

  12. No Access

    Living Reference Work Entry In depth

    Simultaneous Quantification of Nucleotide Sugar Metabolism by LC and LC-MS

    Cellular glycosylation plays an important role in many biological processes, as well as in disease states such as diabetes and cancer. Nucleotide sugar s are donor substrates of glycosyltransferases and their ...

    Kazuki Nakajima, Naoyuki Taniguchi in Glycoscience: Biology and Medicine

  13. No Access

    Article

    Structural Characterization of Monosialo-, Disialo- and Trisialo-gangliosides by Negative Ion AP-MALDI-QIT-TOF Mass Spectrometry with MSn Switching

    The atmospheric pressure matrix-assisted laser desorption/ionization (AP-MALDI) is a quite convenient soft ionization for biomolecules, kee** analytes atmospheric conditions instead of high vacuum conditions...

    Emi Ito, Akio Tominaga, Hiroaki Waki, Kozo Miseki, Azusa Tomioka in Neurochemical Research (2012)