2022


22 December, 2022

Chromosome Workshop 2022

Shuhei Yoshida attended the 40th Chromosome Workshop and the 21st Nuclear Dynamics Meeting (online) held from 20 to 21 December and gave an oral presentation.


22 December, 2022

The Japan Society of Human Genetics

Tomoya Kitajima was invited to present our research at the 67th Annual Meeting of the Japan Society of Human Genetics held in Yokohama from 14 to 17 December.


22 December, 2022

MBSJ 2022

Shuhei Yoshida attended the 45th Annual Meeting of the Molecular Biology Society of Japan held in Chiba from 30 November to 2 December and gave oral and poster presentations.


22 December, 2022

The International Symposium "Totipotency and Germ Cell Development"

Tomoya Kitajima, Osamu Takenouchi, Eishi Aizawa and Hirohisa Kyogoku attended the International Symposium "Totipotency and Germ Cell Development" held in Fukuoka from 23 to 25 November and gave oral and poster presentations.


28 November, 2022

Lab Excursion

We held a welcome event for a new student, Mei. We enjoyed fishing and barbecue at Hiraiso Marine Fishing Park.

釣りバーベキュー
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14 November, 2022

Japan Society for Reproductive Medicine

Tomoya Kitajima was invited to present our research at the 67th Annual Meeting of the Japan Society for Reproductive Medicine held in Yokohama from 3 to 4 November, 2022.


21 October, 2022

A paper on the origin of scarlet crucian carp, designated as the Natural Monument of Japan, has been published

Scarlet crucian carp, locally called “Hibuna” has been found in several distant river in Hokkaido Island, Japan. Particularly famous is the Carassius population including Hibuna in Lake Harutori, which has been designated as a Natural Monument of Japan.
Mishina (SPDR) et al. showed that the Hibuna originated from hybridization between indigenous gynogenetic triploids and goldfish introduced about 100 years ago, in collaboration with Kyoto University, Kushiro City Museum, and Bihoro Museum.

Mishina T, Nomoto K, Machida Y, Hariu T, Watanabe K.
Origin of scarlet gynogenetic triploid Carassius fish: Implications for conservation of the sexual–gynogenetic complex.
PLOS ONE 17(10): e0276390 (2022) doi:10.1371/journal.pone.0276390
PLOS ONE


21 October, 2022

EMBO Workshop

Tomoya Kitajima was invited to present our research online at EMBO Workshop "The Cell Cycle: One Engine - Many Cycles" held in Konstanz, Germany from 17 to 20 October, 2022.


13 October, 2022

Cold Spring Harbor Laboratory Germ Cells Meeting

Tomoya Kitajima was invited to present our research at Cold Spring Harbor Laboratory Germ Cells Meeting held in Cold Spring Harbor from 5 to 9 October, 2022.


21 September, 2022

ISJ (Ichthyological Society of Japan) Meeting

Tappei Mishina attended the 56th ISJ (Ichthyological Society of Japan) Meeting held in Osaka from 17-20 September, 2022 and presented his research.


12 September, 2022

A new member joined

Mei Akiko Mukose joined our lab as a research part-time worker. She will also be a student trainee from October.


29 August, 2022

BDR Summer School

BDR summer internship program for undergraduate students was held from August 22-26 for the first time in three years. Kitajima Lab welcomed 2 students. They had the opportunity to carry out experiments using live-imaging of mouse oocytes and presented their results to the other internship participants.

Summer School
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3 Augusut, 2022

Seeking a Research Scientist or a Senior Research Scientist

We are seeking a research scientist or a senior research scientist.
・Applications are now closed. Thank you.


3 Augusut, 2022

Cell Division Workshop

Tomoya Kitajima, Shuhei Yoshida, Osamu Takenouchi and Tappei Mishina attended Cell Divison Workshop held in Mishima from 28-29 July, 2022 and presented their researches. Tappei received the Best Poster Award.


3 June, 2022

Lab Excursion

We went to Shiawase-no-mura in Kobe with our new members, Yuanzhuo and Haruki. We enjoyed playing table tennis and badminton.

Lab Excursion 2022
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20 May, 2022

A new paper from a collaborative research

Hirohisa Kyogoku (Visiting Scientist) has revealed the dynamics of biparental meiosis carrying spermatocyte-derived chromosomes in oocytes, in collaboration with Dr. Ogura's lab at RIKEN BRC.

Ogonuki N, Kyogoku H, Hino T, Osawa Y, Fujiwara Y, Inoue K, Kunieda T, Mizuno S, Tateno H, Sugiyama F, Kitajima TS, Ogura A.
Birth of mice from meiotically arrested spermatocytes following biparental meiosis in halved oocytes.
EMBO Reports. May 19:e54992.(2022) doi: 10.15252/embr.202254992.
EMBO Reports
RIKEN Research Highlight "Smaller eggs enhance IVF outcomes for male infertility in mice"
RIKEN BRC News "Birth of mice from meiotically arrested spermatocytes following biparental meiosis in halved oocytes"


13 May, 2022

EMBO Workshop Chromosome segregation and aneuploid

Tomoya Kitajima was invited to present our research at EMBO Workshop Chromosome segregation and aneuploid held in Vienna (online-onsite) from 1 to 4 May.


1 April, 2022

A new member joined

Haruki Morioka (Student Trainee) joined our lab in April.


31 March, 2022

Accepting a trainee

We accepted Mr. Taro Kunitomi of Juntendo University as a trainee in March. He had the opportunity to carry out experiments using live-imaging of mouse oocytes.

Lab members with Kunitomisan
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14 March, 2022

IPR Seminar

Tomoya Kitajima attended IPR Seminar held by Institute for Protein Research, Osaka University (online-onsite) on 12 March, 2022 and gave an oral presentation.


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