Nick is a leading computational biologist known for his work on gene regulation using bioinformatics. As head of the unit, he employs big data and computational methods to advance genomic research and understand complex biological processes.
Members

Aki Masunaga
Technician
Aki successfully established an impressive culturing facility for the long-term maintenance of Oikopleura dioica at GRSU since she began her career here in 2015. Currently, she is involved in whole genome DNA isolation/sequencing of field samples on NGS (Illumina & Nanopore) platforms and yet still manages to coordinate and conduct field work required for the population study.

Dr Yongkai Tan
Technician
Yongkai has provided his expertise in NGS, gleaned while working for Beijing Genomic Institute in Kobe, to the GRSU group since starting in 2016. Currently, he is involved in whole genome DNA & RNA isolation/sequencing of field samples on NGS (Illumina & Nanopore) platforms. He has been successful in optimizing isolation conditions of typically low total-genomic DNA yields found in Oikopleura samples for high-quality long reads from a single individual.

Dr Charles Plessy
Staff Scientist
Charles joined in 2018 hailing from RIKEN Yokohama campus. He brought with him nearly 20 years of genomic and transcript analysis proficiency along with a strong background in bioinformatics and Linux system administration. He likes scientific challenges that can be solved with a high-throughput screen. As an enthusiastic group leader, he leads multiple projects within the unit, and promotes open-source software in OISTs bioinfo user group. He also enjoys practicing aikido on the OIST campus.

Dr. Nicolas Dierckxsens
Research Scientist
A computational biologist from Belgium, Nicolas developed the widely-used organelle assembler, NOVOPlasty during his PhD and later researched disease-causing variants in university hospitals. Passionate about nature, he is now an interdisciplinary postdoc interdisciplinary postdoc between the Marine Climate Change unit of Prof. Ravasi and the Genomics and Regulatory Systems unit.

J. Nicolaus Wibisana
PhD student
Email: Email
Nico joined the unit in 2022 working on the epigenetic landscape of O. dioica. He previously worked on super-enhancer in B cell activation at Osaka University before moving to OIST for PhD.
Kian Murray
Rotation Student

Yuri Yepez
Research Scientist
Yuri is a biologist from Venezuela. He completed his PhD in Brazil, primarily working on molecular patterns associated with hypoxic tolerance in aquatic mammals. He has an interdisciplinary background and enjoys approaching various biological questions from a genetic and genomic perspective. Additionally, he enjoys trekking and practicing Brazilian Jiu-Jitsu.
Gaspar Sanchez-Serna
Research Scientist

Zikun Yang
Zikun is an undergraduate student from SJTU. He has an appreciation for nature and life, and raises ants as a hobby. He joined the unit in April 2025 for a five-month research stay. His work focuses on developing novel metrics to characterize the genome scrambling phenomenon across the tree of life from a bioinformatics perspective.
Former Members
- Ritika Gupta, Research Intern
- Estela Moreno, Research Intern
- Andrew Liu, Research Technician (Nakayama Unit)
- Arina Mazurova, Rotation Student
- Sara Ikeda, Rotation Student
- Michael Mansfield, Research Scientist
- Yutei Takahashi, Rotation Student (Kiyomitsu Unit)
- Jiashun Miao, Research Scientist (Xianghu Laboratory, Hangzhou China)
- Mohamed Mahdi, Intern (Wageningen University, Netherlands)
- Bruna Fistarol, Intern (Getulio Vargas Foundation, Brazil)
- Anna Klarkowska, Rotation Student (Saze Unit)
- Kose Watanabe, Intern (Keio University, Japan)
- Noa Yuzo Brenner, Intern (UH, Manoa)
- Rikuo Takahashi, Intern (Keio University, Japan)
- Charlotte Capitanchik, Visiting Research Scientist (Crick Institute, London UK)
- Gaspar Sánchez-Serna, Visiting PhD student (University of Barcelona, Spain)
- Maria Sara Del Rio-Pisula, Intern
- Huyên Pham, Intern
- Elizaveta Miticheva, Intern (currently at Weizmann Insitute of Science, IL)
- Aleksandra Bliznina. PhD scholar (currently at Wellcome Sanger Institute, UK)
- Amy Yong, Rotation Student (Terenzio Unit)
- Daniel Gutiérrez, Rotation Student (Wolf Unit)
- Naohiro Yamauchi, Rotation Student (Doya Unit)
- Jan Grašič, (Kono Unit)
- Saurabh Kumar, Intern
- Tanmay Rustagi, Intern
- Charlotte West, Intern (currently at EBI, Cambridge, UK)
- Julien Pichon, Intern (University of Paris, FR)
- Jai Denton, Research Scientist (currently at CropLife Australia, ACT, AU)
- Ritsuko Suyama, Research Scientist (currently at Osaka University)
- Anna Poetsch, Research Scientist (currently at TU, Dresden, DE)
- Garth Ilsley, Staff Scientist (currently at EBI, Cambridge, UK)