25 April 2018 : Laboratory Research
MYSM1 Is Essential for Maintaining Hematopoietic Stem Cell (HSC) Quiescence and Survival
Yi Huo12BCD, Bing-Yi Li3BCD, Zhi-Feng Lin3BC, Wei Wang2BF, Xiao-Xia Jiang4DF, Xu Chen2BF, Wen-Jin Xi2BF, An-Gang Yang2A, Si-Yi Chen4AG, Tao Wang14ADEFG*DOI: 10.12659/MSM.906876
Med Sci Monit 2018; 24: LBR2541-2549
Abstract
BACKGROUND: Histone H2A deubiquitinase MYSM1 has recently been shown to be essential for hematopoiesis and hematopoietic stem cell (HSC) function in both mice and humans. However, conventional MYSM1 knockouts cause partial embryonic lethality and growth retardation, and it is difficult to convincingly remove the effects of environmental factors on HSC differentiation and function.
MATERIAL AND METHODS: MYSM1 conditional knockout (cKO) mice were efficiently induced by using the Vav1-cre transgenic system. The Vav-Cre MYSM1 cKO mice were then analyzed to verify the intrinsic role of MYSM1 in hematopoietic cells.
RESULTS: MYSM1 cKO mice were viable and were born at normal litter sizes. At steady state, we observed a defect in hematopoiesis, including reduced bone marrow cellularity and abnormal HSC function. MYSM1 deletion drives HSCs from quiescence into rapid cycling, and MYSM1-deficient HSCs display impaired engraftment. In particular, the immature cycling cKO HSCs have elevated reactive oxygen species (ROS) levels and are prone to apoptosis, resulting in the exhaustion of the stem cell pool during stress response to 5-FU.
CONCLUSIONS: Our study using MYSM1 cKO mice confirms the important role of MYSM1 in maintaining HSC quiescence and survival.
Keywords: Hematopoietic Stem Cells, Histones, ubiquitination
Editorial
01 April 2024 : Editorial
Editorial: Forty Years of Waiting for Prevention and Cure of HIV Infection – Ongoing Challenges and Hopes for Vaccine Development and Overcoming Antiretroviral Drug ResistanceDOI: 10.12659/MSM.944600
Med Sci Monit 2024; 30:e944600
In Press
08 Mar 2024 : Laboratory Research
Evaluation of Retentive Strength of 50 Endodontically-Treated Single-Rooted Mandibular Second Premolars Res...Med Sci Monit In Press; DOI: 10.12659/MSM.944110
11 Mar 2024 : Clinical Research
Comparison of Effects of Sugammadex and Neostigmine on Postoperative Neuromuscular Blockade Recovery in Pat...Med Sci Monit In Press; DOI: 10.12659/MSM.942773
12 Mar 2024 : Clinical Research
Comparing Neuromuscular Blockade Measurement Between Upper Arm (TOF Cuff®) and Eyelid (TOF Scan®) Using Miv...Med Sci Monit In Press; DOI: 10.12659/MSM.943630
11 Mar 2024 : Clinical Research
Enhancement of Frozen-Thawed Human Sperm Quality with Zinc as a Cryoprotective AdditiveMed Sci Monit In Press; DOI: 10.12659/MSM.942946
Most Viewed Current Articles
17 Jan 2024 : Review article
Vaccination Guidelines for Pregnant Women: Addressing COVID-19 and the Omicron VariantDOI :10.12659/MSM.942799
Med Sci Monit 2024; 30:e942799
14 Dec 2022 : Clinical Research
Prevalence and Variability of Allergen-Specific Immunoglobulin E in Patients with Elevated Tryptase LevelsDOI :10.12659/MSM.937990
Med Sci Monit 2022; 28:e937990
16 May 2023 : Clinical Research
Electrophysiological Testing for an Auditory Processing Disorder and Reading Performance in 54 School Stude...DOI :10.12659/MSM.940387
Med Sci Monit 2023; 29:e940387
01 Jan 2022 : Editorial
Editorial: Current Status of Oral Antiviral Drug Treatments for SARS-CoV-2 Infection in Non-Hospitalized Pa...DOI :10.12659/MSM.935952
Med Sci Monit 2022; 28:e935952