Collection-image

TOPICAL COLLECTIONS

Direct Reprogramming of Somatic Cells: The Feasibility and Challenge

Submit Abstract

Guest Editors

Yun-Wen Zheng

Yun-Wen Zheng

University of Tsukuba Faculty of Medicine, Japan

Dr. Zheng, a stem cell biologist and a principle investigator, received his PhD of Medical Science at the University of Tsukuba Graduate School of Medicine. From 2003, he has been a team leader for somatic stem cells and pluripotent stem cells as well as for regenerative medicine and therapy. He got his postdoctoral training as a JSPS Fellow (Japan Society for the Promotion of Science) and then became an Assistant Professor at Yokohama City University School of Medicine, next served as an Associate Professor at University of Tsukuba Faculty of Medicine. As a Distinguished Medical Experts and a Distinguished Professor, he is collaborating now with his colleagues at Institute of Regenerative Medicine, Jiangsu University, and School of Biotechnology and Health Sciences, Wuyi University, China. Dr. Zheng is focusing on the isolation of endoderm stem cells as well as liver stem cells in normal and cancer tissues from rodents and human specimens; especially for hepatic primordial development and the microenvironment, and drug development, he is trying to generate chimera rat with humanized liver and blood. Furthermore, for clinical application, he is investigating how to generate the hepatic organoids with multiple cell-cell interactions. He is also interested in cellular reprogramming and expansion of primary human hepatocytes and iPSC-derived hepatic progenitors through small molecules in vitro and in vivo.

Li-Ping Liu

Li-Ping Liu

Institution of Regenerative Medicine, Jiangsu University

Dr. Liu is an Assistant Professor at Jiangsu University and an Associate Chief Physician at the Affiliated Hospital of Jiangsu University. She received her MD in Clinical Medicine from the Nanjing Medical University and PhD in Clinical Laboratory Diagnostics from the Jiangsu University. She had a collaborated research at the University of Tsukuba Faculty of Medicine in Japan as Visiting Fellow. Dr. Liu’s research is focused on differentiation of patient iPSCs and cellular transplantation, direct reprogramming and 3D organoid culture. She established a novel suspensive system for iPSCs-derived melanocytes which showed much higher differentiation efficiency and she also verified the long-term in vivo function maintenance of iPSCs-derived melanocytes.

Jian-Yun Ge

Jian-Yun Ge

University of Tsukuba Faculty of Medicine, Tokyo

Ge Jianyun is a PhD student at the Division of Gastroenterological and Hepatobiliary Surgery, and Organ Transplantation, University of Tsukuba. His research mainly focusses on developing humanized animal models and exploring alternative human cell sources for transplantation. He and his colleagues have achieved liver-humanization in a novel rat model in 2020. Additionally, the same team seeks to address the shortage of primary human hepatocytes by trying a variety of reprogramming strategies. Recently, they have achieved critical success in induction of expandable human hepatoblast-like cells from hiPSC by using specific small molecules, and confirm their in vivo repopulation and functions.

Collection Overview

Generation of numerous functional somatic cells in a practical and effective manner is a major challenge in the field of regenerative medicine. In vitro induction of cell plasticity and the expansion of its capabilities by direct reprogramming has great promise for meeting this challenge. In addition to the potent genetic manipulation of transcription factors (TFs), integration-free approaches for the direct conversion of somatic cell fate have gained considerable interest in recent years; including synthetic RNAs, cell membrane–permeable proteins, episomal plasmids, and chemical compounds. Each single method has its own unique advantages and limitations. Recently, several chemical compounds have been shown to synergistically improve the TFs-mediated cell reprogramming with enhanced efficiency and functions, providing us with critical insight into the potential of combined methods in direct reprogramming of somatic cells.

The aim of this collection is to (1) share the achievements in direct reprogramming of functional somatic cell types using new methods; (2) find the limitations in the current reprogramming methods and elucidate the mechanisms; (3) provide evidence that combined methods may further enhance the reprogramming efficiency, cell functions, or in vivo repopulation capability; (4) compare, optimize, and finally standardize the current reprogramming methods targeting specific cell types (such as neurons, cardiomyocytes, hepatocytes, pancreatic β cells, melanocytes and their progenitors); (5) identify how the TFs, RNAs, proteins, plasmids, or chemical compounds individually or synergistically regulate the cell signal pathways and map the reprogramming networks towards cell fate conversion; and (6) explore the induction microenvironment under different culture patterns such as 3D spheroids and multicellular organoids.

Articles

In vitro Assessment of Cardiac Reprogramming by Measuring Cardiac Specific Calcium Flux with a GCaMP3 Reporter
5:04

In vitro Assessment of Cardiac Reprogramming by Measuring Cardiac Specific Calcium Flux with a GCaMP3 Reporter

0 Views

•

Cited by 4

•

2022

•

Abstracts

A reproducible protocol for the generation of induced pluripotent stem (iPS) cells from human dermal fibroblasts using retroviral vectors

Melika Zamanian1,

Ebrahim Shahbazi2,

Sharif Moradi*2

1Department of Applied Cell Sciences, Faculty of Basic Sciences and Advanced Medical Technologies, Royan Institute, ACECR, Tehran, Iran,

2Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran