Two Ck1δ transcripts regulated by m6A methylation code for two antagonistic kinases in the control of the circadian clock

JM Fustin, R Kojima, K Itoh, HY Chang… - Proceedings of the …, 2018 - National Acad Sciences
The N 6 -methylation of internal adenosines (m6A) in mRNA has been quantified and localized
throughout the transcriptome. However, the physiological significance of m6A in most …

S-adenosyl-l-homocysteine hydrolase links methionine metabolism to the circadian clock and chromatin remodeling

…, I Forne, S Ranjit, J Gaucher, K Kinouchi, R Kojima… - Science …, 2020 - science.org
Circadian gene expression driven by transcription activators CLOCK and BMAL1 is intimately
associated with dynamic chromatin remodeling. However, how cellular metabolism directs …

[HTML][HTML] Methylation deficiency disrupts biological rhythms from bacteria to humans

…, TK Tamai, Y Xu, ML Jabbur, R Kojima… - Communications …, 2020 - nature.com
The methyl cycle is a universal metabolic pathway providing methyl groups for the methylation
of nuclei acids and proteins, regulating all aspects of cellular physiology. We have …

[HTML][HTML] Comparison of glycyrrhizin content in 25 major kinds of Kampo extracts containing Glycyrrhizae Radix used clinically in Japan

M Nose, M Tada, R Kojima, K Nagata, S Hisaka… - Journal of natural …, 2017 - Springer
Glycyrrhizae Radix is the most frequently used crude drug in Japan and is prescribed in
Kampo medicine for the treatment of a wide range of diseases. The major active ingredient of …

[HTML][HTML] Clock genes and salt-sensitive hypertension: a new type of aldosterone-synthesizing enzyme controlled by the circadian clock and angiotensin II

H Okamura, K Goto, R Kojima - Hypertension Research, 2016 - nature.com
With the current societal norm of shiftwork and long working hours, maintaining a stable daily
life is becoming very difficult. An irregular lifestyle disrupts circadian rhythms, resulting in …

[HTML][HTML] Secretome Analyses Identify FKBP4 as a GBA1-Associated Protein in CSF and iPS Cells from Parkinson's Disease Patients with GBA1 Mutations

R Kojima, W Paslawski, G Lyu, E Arenas… - International Journal of …, 2024 - mdpi.com
Mutations in the GBA1 gene increase the risk of developing Parkinson’s disease (PD).
However, most carriers of GBA1 mutations do not develop PD throughout their lives. The …

Disease specific brain capillary angiopathy in schizophrenia, bipolar disorder, and Alzheimer's disease

…, M Hino, R Izumi, A Nagaoka, H Yabe, R Kojima… - Journal of Psychiatric …, 2023 - Elsevier
Schizophrenia (SZ) and bipolar disorder (BD), which are both psychiatric disorders, share
some common clinical evidence. We recently discovered that brain capillary angiopathy is …

[HTML][HTML] Prosaposin reduces α-Synuclein in cells and Saposin C dislodges it from glucosylceramide-enriched lipid membranes

R Kojima, M Zurbruegg, T Li, W Paslawski… - Journal of Molecular …, 2022 - Springer
Parkinson’s disease (PD) is the second most common progressive neurodegenerative disorder
affecting over 1% of the 65 + age population. Saposin C, a lysosomal protein required for …

Pulmonary carcinoma associated with hamartoma in an 11-year-old boy

R Kojima, M Mizuguchi, F Bessho, T Oka… - Journal of Pediatric …, 1993 - journals.lww.com
Purpose: We describe a poorly differentiated adenocarcinoma of the lung in an 11-year-old
boy who had had a pulmonary hamartoma for at least 8 years. Conclusions: A hamartoma …

Translational studies of glucocerebrosidase in Parkinson´ s disease

R Kojima - 2024 - openarchive.ki.se
A number of genetic variants have been linked to Parkinson’s disease (PD). Among these,
mutations in the GBA1 gene are identified as one of the most common risk factors for …