Seok-Ho Hong

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BACKGROUND Cancer and normal stem cells (SCs) share proliferative properties of self-renewal and expression of key transcription factors (TFs). Despite similar TF identities, the functional role of specific TFs responsible for retaining SC state has yet to be examined in cancer. METHODOLOGY/PRINCIPAL FINDINGS Here, we compare the role of Oct4 and Nanog,(More)
OBJECTIVE Focal epileptogenic lesions can manifest as infantile spasms, a catastrophic type of epilepsy. Although early surgery for catastrophic epilepsies has shown positive effects, little is known regarding long-term outcomes. The present study examined long-term outcomes in patients with localization-related infantile spasms treated surgically. (More)
Increasing evidence indicates that microRNAs (miRNAs), endogenous short non-coding RNAs 19–24 nucleotides in length, play key regulatory roles in various biological events at the post-transcriptional level. Embryonic stem cells (ESCs) represent a valuable tool for disease modeling, drug discovery, developmental studies, and potential cell-based therapies in(More)
BACKGROUND AND PURPOSE Hemispherectomy reportedly produces remarkable results in terms of seizure outcome and quality of life for medically intractable hemispheric epilepsy in children. We reviewed the neuroradiologic findings, pathologic findings, epilepsy characteristics, and clinical long-term outcomes in pediatric patients following a hemispheric(More)
Recent studies have reported that stem cells can be isolated from a wide range of tissues including bone marrow, fatty tissue, adipose tissue and placenta. Moreover, several studies also suggest that skin dermis could serve as a source of stem cells, but are of unclear phenotype. Therefore, we isolated and investigated to determine the potential of stem(More)
DGCR8 is an RNA-binding protein that interacts with DROSHA to produce pre-microRNA in the nucleus, while DICER generates not only mature microRNA, but also endogenous small interfering RNAs in the cytoplasm. Here, we produced Dgcr8 conditional knock-out mice using progesterone receptor (PR)-Cre (Dgcr8(d/d)) and demonstrated that canonical microRNAs(More)
Spermatogenesis is a complex process through which spermatogonial stem cells undergo mitosis, meiosis, and cell differentiation to generate mature spermatozoa. During this process, male germ cells experience several translational modifications. One of the major post-translational modifications in eukaryotes is the ubiquitination of proteins, which targets(More)
In recent years, perivascular stem cells (PVCs) have gained increasing attention as a promising source for regenerative medicine due to their greater differentiation potential compared to multipotent mesenchymal stem cells (MSCs). It has been reported that growth differentiation factor-5 (GDF-5) is involved in regulating proliferation and chondrogenic(More)
Self-renewal and differentiation are hallmarks of stem cells and controlled by various intrinsic and extrinsic factors. Increasing evidence indicates that estrogen (E2), the primary female sex hormone, is involved in regulating the proliferation and lineage commitment of adult and pluripotent stem cells as well as modulating the stem cell niche. Thus, a(More)
Multipotent perivascular cells (PVCs) have recently gained attention as an alternative source for cell-based regenerative medicine. Because of their rarity in human tissues, the development of efficient methods to isolate and expand PVCs from various fetal and adult tissues is necessary to obtain a clinically relevant number of cells that maintain(More)