The 6th Sexual Reproduction Research Meeting was held at Nagoya University South Building of Science Hirata-Sakata Memorial Hall on 23th-24th Feb. Title: “The Diversity and Commonality of Sexual Reproduction” Dr. Kimiko INOUE gave an invited lecture, and Ms. Michiko HIROSE gave a poster presentation. *Invited Lecture* Kimiko INOUE: RNA splicing abnormalities observed in somatic cell nuclear transfer cloned embryos *Poster Presentation* Michiko HIROSE: The advantages and applications of the hamster as a laboratory animal

The 19th Rat Resource and Research Meeting was held at Inamori Hall, Shiran Kaikan Main Building, Kyoto University on 13th Feb. Dr. Kohtaro Morita gave a lecture. Title: Highly efficient production of transgenic rats using piggyBac transposase mRNA and piezo-assisted microinjection

Mr. Hung Duong Lac, PhD student from Mizuno-sensei’s lab (Laboratory Animal Science, Tsukuba University), visited our lab. He took an internship in Experimental Animal Division, and on the final day, Mr. Pham Dinh Quoc introduced him our lab.

Tokyo University of Agriculture and Technology, Practice for Graduate Students “Developmental engineering technologies for mouse embryos at RIKEN BRC” Instructor: Dr. Shogo MATOBA Lecturer: Dr. Shinya AYABE (Experimental Animal Division) Lecturer: Dr. Tamio FURUSE (Mouse Phenotype Analysis Division)

Dr. Jian Yang, formerly of Cincinnati Children’s Hospital Medical Center, Dr. Zhiyuan Chen’s Laboratory, visited our lab.

The 3rd Annual Meeting ：Dynamic reproductive lifespan -Life-long changes and fluctuations in germ cell function and risk for next generation- (Grant-in-Aid for Transformative Research Areas (A) FY 2023–2027) was held at Kumamoto Univ. on Jan. 14th-16th. Dr. Kimiko INOUE and Dr. Satoshi FUNAYA participated from our lab. *Oral Presentation* Kimiko INOUE: Manipulation of reproductive lifespan through reproductive engineering technologies

Next Generation Scientist’s meeting (Dynamic reproductive lifespan) was held at Kumamoto Univ. on Jan. 13th. The following members gave presentations. *Oral Presentation* Satoshi FUNAYA: Involvement of H3 variants in reprogramming abnormalities of cloned embryos You HYEONGJU: Disruption of early embryonic development in mice by polymethylmethacrylate nanoplastics in an oxidative stress mechanism *Poster Presentation* Satoshi FUNAYA: Involvement of H3 variants in reprogramming abnormalities of cloned embryos You HYEONGJU: Disruption of early embryonic development in mice by polymethylmethacrylate nanoplastics in an oxidative stress mechanism *Short Talk* Yusuke SENDA

The Global Young Scientists Summit (GYSS) 2026 was held in Singapore, organized by the National Research Foundation, Singapore (NRF) on Jan. 5th-9th. Mr. Pham Dinh Quoc from our lab participated. Theme “Excite, Engage, Enable”