RIKEN Summer School 2023 was held at RIKEN Wako on September 6-7, and four members of our lab gave poster presentations. Ms. WATANABE received the Poster Award Biology Prize. *Poster Presentation* Naomi WATANABE：Preservation of wild-derived mouse strains by nuclear transfer using peripheral blood cells Takaki TATEBE：Analysis of protein degradation systems in SCNT embryos PHAM Quoc Dinh：Establishment and characterization for transgenic cloned mice harboring human erythropoietin gene produced by genome editing and nuclear transfer Syun TOKITA：Differences in the quality of ROSI-derived embryos among experimenters who generated them

Dr. Shogo Matoba was invited to give a lecture at the 166th Annual Meeting of the Japanese Society of Veterinary Science held online from Sep.5 to 8. *Invited lecture* Subcommittee for Veterinary Anatomy Satellite Forum “Studies of Totipotency and its Applications” Title: Totipotency in Eggs and its Application to Somatic Cell Nuclear Transfer Technology

IWATE University students (Faculty of Agriculture, Veterinary Medicine Cooperative) visited our lab.

Ms. Naomi WATANABE of our laboratory participated in the ” IGH summer school on Genome Stability and Organization” organized by the Sasakawa Foundation and co-organized by the Institute of Human Genetics, University of Montpellier (France), and gave a poster presentation and an oral presentation. Title: Preservation of wild-derived mouse strains by nuclear transfer using peripheral blood cells *Comment by Ms. Watanabe* It was a stimulating week for me, as we were a group of young researchers, including French and Japanese doctoral students and post-doctoral fellows. After the school, French students showed us around Montpellier, and we had dinner together. We shared our problems that are unique to students, were surprised […]

The BRC student gathering was held at the initiative of Team Leader Yohei HAYASHI, Ph.D.(iPS Cell Advanced Characterization and Development Team), with the aim of allowing the 15 students and PIs affiliated with the BRC to get to know each other without feeling tense. Dr. Ogura, Ms. Watanabe, Mr. Pham, Mr. Tatebe, and Mr. Tokita participated from our lab.

The 4th Young Scientists Study Group 2023 (Program of totipotency: From decoding to designing) was held at LecTore Yugawara (Kanagawa, Japan) on July 3-5. From our lab, Dr. Ogura, Dr. Shikata, Ms. Watanabe, Mr. Tatebe, Mr. Tokita, and Mr. Pham participated. Dr. Ogura gave a lecture. Title: Looking back on 40 years of reserch *Oral Presentation* Naomi WATANABE: Preservation of wild-derived mouse strains by nuclear transfer using peripheral blood cells. *Poster Session* Daiki SHIKATA: Suppression of enhancer-like endogenous retrovinus in mouse somatic cell nuclear transfer embryos.

A Discovery Evening was held at RIKEN Wako for Special Postdoctoral Researchers (SPDR), Junior Research Associate (JRA), RIKEN Student Researcher (RSR), and International Program Associate (IPA). Mr. Tatebe and Mr. Pham participated from our laboratory. *Poster Session* Takaki TATEBE: Membrane trafficking in early embryogenesis and mouse somatic cell nuclear transfer cloning technology PHAM Quoc Dinh: Advance in cattle cloning by somatic cell nuclear transfer

The second FY2023 plenary meeting of RIKEN Science Council (RSC) was held at the Tsukuba Campus. After the meeting and the BRC Director’s introduction to the BRC, the BRC laboratories held an introductory tour for the RSC members. We Bioresource Engineering Division demonstrated in vitro fertilization of mouse and the thawing of frozen sperm. Many RSC members, including the chairs, asked questions enthusiastically for a long time.