RETRACTED: Patient-specific embryonic stem cells derived from human SCNT blastocysts

Area of Science:

• Stem Cell Biology
• Reproductive Medicine
• Immunology

Background:

• Patient-specific human embryonic stem cells (hESCs) hold significant promise for disease research and regenerative medicine.
• Advancements in stem cell transplantation necessitate the development of immune-matched cell lines.

Purpose of the Study:

• To establish patient-specific, immune-matched hESC lines using somatic cell nuclear transfer (SCNT).
• To assess the pluripotency, chromosomal stability, and immunological compatibility of generated nuclear transfer hESCs (NT-hESCs).

Main Methods:

• Generation of eleven NT-hESC lines from patient skin cells via SCNT into donated oocytes.
• Culture of NT-hESCs on human feeder cells from the same or unrelated donors.
• Analysis of NT-hESC pluripotency, chromosomal normality, DNA matching, and major histocompatibility complex (MHC) identity.

Main Results:

• NT-hESCs were successfully established at high rates from diverse patient donors.
• Generated NT-hESCs demonstrated pluripotency, chromosomal normalcy, and patient-specific DNA matching.
• Immunological compatibility was confirmed through MHC identity comparison between NT-hESCs and patients.

Conclusions:

• The successful generation of patient-specific, immune-matched NT-hESCs is a critical step towards clinical applications.
• Further research is required for directed differentiation protocols and removal of animal components before clinical transplantation.
• Preclinical evidence demonstrating safety and efficacy of differentiated NT-hESC transplantation is essential for future clinical use.