In vertebrates, the vast majority of hematopoiesis occurs in the bone marrow and is derived from a limited number of hematopoietic stem cells that are multipotent and capable of extensive self-renewal.

Hematopoietic stem cells (HSCs) can self-renew and regenerate tissues within the bone marrow, while stromal cells regulate tissue function. Recent studies have validated the role of mammalian stem cells within specific environments, providing initial empirical proof of …

In addition to the cytokines and cell signaling molecules mentioned above, the HSC niche in the bone marrow provides soluble factors, forces, and cell-mediated interactions necessary to maintain the hematopoietic potential of the stem cells located there. This niche is generally separated into 2 sections:

Hematopoietic stem cells (HSCs) develop in discrete anatomical niches, migrating during embryogenesis from the aorta-gonad-mesonephros (AGM) region to the fetal liver, and finally to the bone marrow, where most HSCs reside throughout adult life. ...

Feb 11, 2019 · The haematopoietic stem cell (HSC) niche in the bone marrow ensures haematopoiesis by regulating the function of HSCs and progenitor cells.

Much of the organismal control over hematopoiesis comes from the regulation of hematopoietic stem cells (HSCs) by specific microenvironments called niches in bone marrow (BM), where HSCs reside.

Sep 10, 2024 · HSCs are unique amongst stem and progenitor cell pools in that they engage with multiple physically distinct niches during their ontogeny. HSCs are specified from haemogenic endothelium in...

Feb 1, 2006 · Haematopoietic stem cells (HSCs) have the clonal capacity to lifelong reconstitute all blood lineages after transplantation into lethally irradiated recipients, and are thought to be...

Nov 3, 2022 · During fetal development, human hematopoietic stem cells (HSCs) colonize the bone marrow (BM), where they self-renew and sustain hematopoiesis throughout life; however, the precise timepoint at which HSCs seed the BM is unclear.

Apr 6, 2023 · In situ atomic force microscopy analysis reveals that mouse bone marrow stiffens with age, which correlates with a compromised HSC niche. Taken together, this study highlights the biomechanical regulation of the HSC niche by BMSCs, which could be harnessed to engineer a soft bone marrow niche for HSC rejuvenation.