Article
Cell Biology
Juan Gao, Shuaibing Hou, Shengnan Yuan, Yuxia Wang, Yanan Gao, Xiaolu Sun, Weili Wang, Yajing Chu, Yuan Zhou, Xiaoming Feng, Hongbo R. Luo, Tao Cheng, Jun Shi, Weiping Yuan, Xiaomin Wang
Summary: Research shows that Rheb1-deficiency in neutrophils can remodel the bone marrow environment and induce HSC expansion, possibly by impairing their ability to secrete IL-6, affecting the production of SCF by MSCs, and promoting HSC proliferation.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Cell & Tissue Engineering
Zenghua Lin, Maile K. Hollinger, Zhijie Wu, Wanling Sun, Kaylind Batey, Jisoo Kim, Jichun Chen, Xingmin Feng, Neal S. Young
Summary: It was found that sirolimus enhanced the regeneration of hematopoietic stem and progenitor cells in mice exposed to sublethal total body irradiation and other regenerative stressors. The effects were associated with increased expression of hematopoietic genes, reduced DNA damage and clearance of cellular reactive oxygen species. Sirolimus also showed potential clinical applications for the treatment and prevention of hematopoietic injury.
Review
Cell Biology
Stefania Crippa, Ludovica Santi, Margherita Berti, Giada De Ponti, Maria Ester Bernardo
Summary: The human organism requires the production of approximately 1 trillion new blood cells per day through hematopoiesis in the bone marrow, regulated by the BM microenvironment and HSPCs. The BM niche, defined by interactions between HSPCs and non-hematopoietic cells, controls HSPC maintenance and orchestrates hematopoiesis according to the body's needs. Mesenchymal stromal cells (MSCs) play a key role in the BM niche by regulating HSPC homeostasis and impacting the outcome of hematopoietic stem cell transplantation.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Review
Pharmacology & Pharmacy
Yang Zhang, Yanqi Zhong, Li Zou, Xiaoxia Liu
Summary: Well-developed placenta plays a fundamental role in successful pregnancy, while defective placental development is the underlying cause of preeclampsia. Placenta-derived mesenchymal stem cells (PMSCs) have the ability to differentiate into vessel wall cells and improve placental vasculature, artery remodeling, and immunoregulation. Recent studies have shown that preeclamptic PMSCs disrupt the balance and development in the placenta. However, transplantation or exosome therapies of PMSCs tend to improve placental vascular network and trophoblastic functions, suggesting a potential therapeutic strategy for preeclampsia.
FRONTIERS IN PHARMACOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Christina Bogensperger, Julia Hofmann, Franka Messner, Thomas Resch, Andras Meszaros, Benno Cardini, Annemarie Weissenbacher, Rupert Oberhuber, Jakob Troppmair, Dietmar ofner, Stefan Schneeberger, Theresa Hautz
Summary: Transplantation is limited by the shortage of healthy donor organs, but ex situ machine perfusion has the potential to expand the donor pool. Mesenchymal stem cells are considered as a tool with the potential to improve organs, but clinical benefits have not been conclusively demonstrated.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Cell & Tissue Engineering
Davod Pashoutan Sarvar, Hosein Effatpanah, Parvin Akbarzadehlaleh, Karim Shamsasenjan
Summary: The study highlights the important role of MSC-derived extracellular vesicles (MSC-EVs) in hematopoietic regulation and immune response after transplantation. MSC-EVs directly fuse with hematopoietic stem cell membranes, affecting their fate, and regulate the proliferation and differentiation of hematopoietic stem cells through the release of various bioactive factors.
STEM CELL RESEARCH & THERAPY
(2022)
Article
Cell & Tissue Engineering
Silvia Preciado, Sandra Muntion, Fermin Sanchez-Guijo
Summary: This review summarizes the potential of mesenchymal stromal cells to improve hematopoietic function through the secretion of extracellular vesicles after allogenic hematopoietic stem cell transplantation. It also discusses the advantages of EVs over MSCs, as well as the challenges and uncertainties that need to be addressed for their clinical application.
Review
Biochemistry & Molecular Biology
Jessica Doernen, Thomas Dittmar
Summary: Regenerative medicine focuses on investigating therapeutic agents to promote regeneration after injury or in diseases, with MSCs and EVs being of interest for their roles in tissue regeneration. Clinical studies on MSCs have shown conflicting efficacies, and cell fusion may also play a role in regeneration alongside immune responses.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Multidisciplinary Sciences
Runfeng Miao, Harim Chun, Xing Feng, Ana Cordeiro Gomes, Jungmin Choi, Joao P. Pereira
Summary: This study reveals that a complex homeostatic balance between hematopoietic stem cells (HSCs) and hematopoietic progenitor cells is maintained through competition for a limited amount of cell signaling molecule. When early hematopoietic progenitors fail to interact with specific cells, HSC numbers increase.
NATURE COMMUNICATIONS
(2022)
Article
Developmental Biology
Shizheng Zhao, Ao Zhang, Hao Zhu, Zilong Wen
Summary: The study reports the identification and characterization of a new member of the ETS transcription factors, Spi2, in ray-finned fish. It shows that Spi2 is crucial for hematopoietic stem and progenitor cell development and myeloid lineage differentiation. A reporter line is created to track these cells from early development to adulthood.
Article
Immunology
Sabrina B. Bennstein, Sandra Weinhold, Oezer Degistirici, Robert A. J. Oostendorp, Katharina Raba, Gesine Koegler, Roland Meisel, Lutz Walter, Markus Uhrberg
Summary: ILC3, particularly IL-22-secreting ILC3, play vital roles in maintaining mucosal barrier functions and controlling inflammatory diseases. A method for generating functionally competent human ILC3 from cord blood-derived CD34(+) hematopoietic progenitors on human MSCs has been developed, showing promise for potential clinical applications in treating inflammatory diseases and cancer.
FRONTIERS IN IMMUNOLOGY
(2021)
Review
Biochemistry & Molecular Biology
Bernard J. Smilde, Esmee Botman, Teun J. de Vries, Ralph de Vries, Dimitra Micha, Ton Schoenmaker, Jeroen J. W. M. Janssen, Elisabeth M. W. Eekhoff
Summary: Fibroblasts play a crucial role in maintaining the extracellular matrix of connective tissues. Recent studies have found donor-derived fibroblasts in bone marrow transplant recipients, though some findings were not replicated. This systematic review provides an overview of hematopoietic stem cells differentiating into fibroblasts in various tissues, revealing evidence of fibroblasts derived from hematopoietic stem cells in almost all organs.
Review
Immunology
Marco De Zuani, Jan Fric
Summary: Recent evidence shows that innate immune cells, in addition to B and T cells, can retain immunological memory of their encounters and provide long-term resistance against infections. Hematopoietic stem cells play a crucial role in trained immunity and are influenced by specific cytokines and Toll-like receptor ligands in terms of their memory phenotype and molecular mechanisms.
FRONTIERS IN IMMUNOLOGY
(2022)
Review
Biology
Gi Beom Kim, Oog-Jin Shon, Min-Soo Seo, Young Choi, Wook Tae Park, Gun Woo Lee
Summary: Although conventional MSC-based therapies have limitations, MSC-derived exosomes offer advantages such as small dimensions, low immunogenicity, and potent therapeutic effects for osteoarthritis treatment. Exosomes are nano-sized vesicles containing nucleic acids, functional proteins, and bioactive lipids, secreted by various cell types. They play a role in tissue repair, immune regulation, and inflammation reduction, demonstrating potential for a new therapeutic approach in osteoarthritis. Further research is needed to confirm their clinical effectiveness and feasibility.
Article
Biochemistry & Molecular Biology
Sanshiro Kanazawa, Hiroyuki Okada, Dan Riu, Yo Mabuchi, Chihiro Akazawa, Junichi Iwata, Kazuto Hoshi, Atsuhiko Hikita
Summary: This study demonstrates the important role of c-Mpl signal in the proliferation and differentiation ability of mesenchymal stem cells (MSCs), which are maintained through co-culture with hematopoietic stem cells (HSCs). Furthermore, the study suggests the existence of a hematopoietic-mesenchymal signal and highlights the significance of HSC state in the stability of MSC properties.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
