GO:0071864 positive regulation of cell proliferation in bone marrow: Signaling Pathway, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0071864 describes any process that activates or increases the frequency, rate or extent of cell proliferation specifically within the bone marrow.
• Bone marrow cell proliferation is controlled by a complex niche composed of osteoblasts, stromal cells, immune cells and extracellular matrix components.
• Key regulatory signals include WNT10B, BMP signaling, cholesterol metabolites, microRNAs and transcription factors such as RORA.
• Dysregulation of this process contributes to myeloid leukemia, B-ALL, metastatic neuroblastoma and impaired hematopoietic recovery after irradiation.
• CRISPR knockout, point mutation, knock-in and overexpression models are essential to dissect causal roles of individual genes in bone marrow proliferation.
• Single-cell transcriptomics and integrated bioinformatics are increasingly used to map bone marrow proliferation programs in health and disease.
Description
The bone marrow is the primary site of hematopoiesis, where hematopoietic stem and progenitor cells (HSPCs) undergo tightly regulated proliferation to replenish all blood lineages throughout life. The Gene Ontology term GO:0071864, positive regulation of cell proliferation in bone marrow, captures the biological processes that stimulate or enhance the frequency, rate or extent of cell division specifically within this microenvironment. Understanding this term is critical because both insufficient and excessive bone marrow proliferation underlie major human diseases, including bone marrow failure, leukemia and metastatic bone disease. Research over the past decades has identified multiple cellular and molecular players that positively regulate bone marrow cell proliferation. These include osteolineage cells that form the hematopoietic niche, T regulatory cells that modulate WNT10B expression, and soluble factors such as BMP ligands, cholesterol metabolites and microRNAs. The bone marrow envelope and its remodeling activity also influence the proliferative capacity of adjacent hematopoietic cells. In this article, we integrate authoritative GO annotations with verified PubMed literature to provide a research-grade overview of GO:0071864, its mechanisms, key genes, disease relevance and experimental models for study.
positive regulation of cell proliferation in bone marrow At A Glance
| GO ID | GO:0071864 |
|---|---|
| GO term | positive regulation of cell proliferation in bone marrow |
| Ontology | biological_process |
| Synonym | activation of cell proliferation in bone marrow; positive regulation of bone marrow cell proliferation; stimulation of cell proliferation in bone marrow; up regulation of cell proliferation in bone marrow |
| Major function | Stimulation of cell division and expansion of hematopoietic and other bone marrow-resident cell populations |
| Cellular context | Bone marrow niche including osteoblasts, stromal cells, endothelial cells and immune cells |
| Key signals | WNT10B, BMP ligands, cholesterol metabolites, microRNAs, transcription factors such as RORA |
| Disease relevance | Myeloid leukemia, B-ALL, metastatic neuroblastoma, irradiation-induced marrow suppression |
What Is GO:0071864?
GO:0071864 is defined as any biological process that activates or increases the frequency, rate or extent of cell proliferation occurring in the bone marrow. It encompasses positive regulatory events, including stimulation of hematopoietic stem and progenitor cell division, enhanced proliferation of committed progenitors, and increased cycling of bone marrow-resident cells in response to physiological or pathological signals.
Why Is positive regulation of cell proliferation in bone marrow Important in Cell Biology?
GO:0071864 is important because bone marrow cell proliferation is the foundation of lifelong blood production and immune competence, and its dysregulation is a hallmark of hematological malignancies and bone marrow failure states. Understanding the positive regulatory mechanisms that drive proliferation in the bone marrow provides targets for therapeutic intervention in leukemia, enhancement of hematopoietic recovery after injury, and control of metastatic tumor growth in bone.
• Maintains hematopoietic homeostasis by ensuring adequate production of blood cells throughout life.
• Supports immune cell development and function through T regulatory cell-mediated regulation of WNT10B.
• Is co-opted in myeloid leukemia where BMP signaling in the bone marrow microenvironment promotes leukemic cell proliferation.
• Contributes to B-cell acute lymphoblastic leukemia pathogenesis, with RORA acting as a suppressor of B lineage proliferation.
• Is implicated in metastatic neuroblastoma, where bone marrow-derived cells undergo metabolic reprogramming to support tumor growth.
• Is impaired after irradiation, leading to decreased hematopoietic stem cell proliferation and marrow suppression.
• Is modulated by cholesterol metabolites that alter the bone and marrow niche.
• Is influenced by microRNAs such as miR-9-3 that exert immune regulatory effects in the marrow.
• Serves as a target for therapeutic strategies aiming to enhance bone formation and hematopoietic recovery.
• Provides a conceptual framework for studying niche-driven proliferation in health and disease.
What Happens During positive regulation of cell proliferation in bone marrow?
Niche-derived proliferative signals
In simple terms: Cells in the bone marrow receive growth signals from their surrounding environment.
Positive regulation of cell proliferation in the bone marrow begins with signals emanating from the bone marrow niche. Osteolineage cells, stromal cells and immune cells produce factors that stimulate hematopoietic stem and progenitor cells to enter the cell cycle. For example, T regulatory cells in the bone marrow regulate WNT10B expression, which in turn stimulates bone formation and likely supports a niche permissive for proliferation. Cholesterol metabolites can also modulate the bone and marrow niche, influencing the proliferative status of resident cells.
Receptor activation and intracellular signaling
In simple terms: Growth factors bind to receptors on bone marrow cells and trigger internal signaling cascades.
Once niche-derived factors bind their receptors, intracellular signaling pathways are activated. BMP signaling in the bone marrow microenvironment is a well-documented positive regulator of proliferation, particularly in myeloid leukemia where targeting BMP signaling affects leukemic cell expansion. WNT10B signaling, regulated by T regulatory cells, promotes bone formation and is part of the regulatory network controlling marrow cell activity. These pathways converge on transcription factors that drive cell cycle entry.
Transcription factor networks and cell cycle entry
In simple terms: Inside the cell, specific proteins switch on genes that push the cell to divide.
Transcription factors such as RORA play critical roles in modulating B lineage cell proliferation in the bone marrow. RORA suppresses B lineage cell proliferation, and its loss contributes to BCR/ABL1-induced B-ALL pathogenesis, indicating that positive regulation of proliferation can occur through relief of suppression. Other transcription factors downstream of WNT and BMP signaling promote expression of cyclins and other cell cycle regulators, driving progression through the G1/S checkpoint.
Metabolic reprogramming supporting proliferation
In simple terms: Dividing cells need extra energy and building blocks, so their metabolism changes.
Proliferating cells in the bone marrow undergo metabolic reprogramming to meet the biosynthetic demands of cell division. Integrated single-cell and transcriptomic analysis of bone marrow-derived metastatic neuroblastoma has revealed molecular mechanisms of metabolic reprogramming that support tumor cell proliferation in the bone marrow. Similar metabolic adaptations are likely required for normal hematopoietic proliferation, although the specific pathways may differ by cell type and context.
Interaction with bone remodeling and marrow envelope
In simple terms: The physical structure of the bone marrow and surrounding bone influences how cells grow.
The bone marrow envelope plays a critical role in human bone remodeling, and its activity is closely linked to the hematopoietic compartment. Positive regulation of cell proliferation in the bone marrow is therefore not solely a soluble-factor-driven process but also depends on physical and structural cues from the marrow envelope and bone-forming osteoblasts. Disruption of these structural elements, as occurs after irradiation, impairs hematopoietic stem cell proliferation.
Key Genes Involved in GO:0071864 positive regulation of cell proliferation in bone marrow
The following genes and proteins have been experimentally implicated in positive regulation of cell proliferation in the bone marrow, based on the verified literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| WNT10B | Stimulates bone formation and supports a pro-proliferative niche; regulated by T regulatory cells | Target for enhancing bone formation and hematopoietic support |
| BMP ligands | Activate BMP signaling in the bone marrow microenvironment to promote proliferation | Therapeutic target in myeloid leukemia |
| RORA | Suppresses B lineage cell proliferation; loss contributes to B-ALL | Tumor suppressor in B-ALL pathogenesis |
| miR-9-3 | Exerts immune regulatory effects in the marrow | Potential regulator of immune-mediated proliferation |
| Cholesterol metabolites | Modulate bone and marrow niche to influence proliferation | Link between lipid metabolism and marrow cell growth |
| HSPCs (e.g., CD34+ cells) | Primary target cells whose proliferation is positively regulated | Central to hematopoietic recovery and transplantation |
| Osteoblasts | Form the niche and produce factors that stimulate proliferation | Key cellular component of the regulatory microenvironment |
| T regulatory cells | Regulate WNT10B expression and support bone formation | Immune modulation of bone marrow proliferation |
| BCR/ABL1 | Oncogenic fusion that drives B-ALL; counteracted by RORA | Model for studying leukemic proliferation |
| Bone marrow stromal cells | Provide structural and soluble support for proliferation | Niche component in health and disease |
| Endothelial cells | Contribute to vascular niche supporting proliferation | Angiocrine regulation of hematopoiesis |
| Metabolic enzymes (various) | Support biosynthetic demands of proliferating cells | Targets in metabolic reprogramming studies |
| Irradiation-sensitive progenitors | Their proliferation is impaired after irradiation | Model for marrow suppression and recovery |
How Is positive regulation of cell proliferation in bone marrow Regulated?
Positive regulation of cell proliferation in the bone marrow is controlled by a multilayered regulatory network. At the extracellular level, WNT10B expression is modulated by T regulatory cells, linking immune regulation to bone formation and niche function. BMP signaling in the bone marrow microenvironment provides both positive and negative cues depending on context, and its targeting has therapeutic potential in myeloid leukemia. Cholesterol metabolites can alter the bone and marrow niche, thereby influencing proliferative signals. Intracellularly, transcription factors such as RORA act as suppressors of B lineage proliferation, and their downregulation removes a brake on proliferation, contributing to B-ALL. MicroRNAs such as miR-9-3 exert immune regulatory effects that may indirectly affect marrow cell proliferation. Additionally, the bone marrow envelope and bone remodeling activity provide structural regulation of the hematopoietic compartment. After irradiation, proliferative capacity is transiently suppressed, reflecting the sensitivity of the regulatory network to genotoxic stress.
positive regulation of cell proliferation in bone marrow and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| BMP ligands | Myeloid leukemia | Knockout or overexpression in leukemia cell lines and xenografts |
| RORA | B-ALL | Knockout and overexpression in B-ALL models |
| WNT10B | Bone formation and hematopoietic niche | Conditional knockout in osteolineage cells |
| BCR/ABL1 | B-ALL | Knock-in or transgenic expression in B lineage cells |
| Metabolic enzymes | Metastatic neuroblastoma | CRISPR knockout in neuroblastoma cell lines followed by bone marrow metastasis assays |
Myeloid leukemia and BMP signaling
In myeloid leukemia, the bone marrow microenvironment provides proliferative signals that support leukemic cell expansion. BMP signaling within this niche has been identified as a key pathway, and targeting BMP signaling is being explored as a therapeutic strategy. This illustrates how positive regulation of cell proliferation in the bone marrow can be hijacked by malignant cells.
B-cell acute lymphoblastic leukemia (B-ALL)
RORA functions as a suppressor of B lineage cell proliferation, and its downregulation or loss contributes to BCR/ABL1-induced B-ALL pathogenesis. This demonstrates that positive regulation of proliferation in the bone marrow can result from the inactivation of negative regulators, a common theme in cancer.
Metastatic neuroblastoma in bone marrow
Bone marrow is a frequent site of neuroblastoma metastasis. Integrated single-cell and transcriptomic analyses have revealed metabolic reprogramming mechanisms that support the proliferation of bone marrow-derived metastatic neuroblastoma cells. This highlights the role of the bone marrow microenvironment in promoting tumor cell growth.
Irradiation-induced marrow suppression
Local regulation of hematopoietic stem cell proliferation is disrupted following irradiation, leading to decreased proliferation and marrow suppression. Understanding the positive regulatory mechanisms is essential for developing strategies to enhance hematopoietic recovery after radiation injury or chemotherapy.
From positive regulation of cell proliferation in bone marrow-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of a candidate gene increase or decrease bone marrow cell proliferation? | CRISPR knockout in hematopoietic stem/progenitor cells or stromal cells |
| Does a specific point mutation in a signaling molecule alter proliferative capacity? | CRISPR point mutation knock-in in cell lines or primary cells |
| Does overexpression of a growth factor or transcription factor drive proliferation? | CRISPR-mediated overexpression or lentiviral overexpression in bone marrow cells |
| How does a tagged protein localize in the bone marrow niche? | Tagged knock-in (e.g., GFP, HA) for imaging and co-IP |
| What is the effect of niche-derived factors on hematopoietic proliferation? | Co-culture of HSPCs with modified stromal cells or osteoblasts |
| How does irradiation affect positive regulation of proliferation? | In vivo irradiation models followed by proliferation assays |
How to Study the positive regulation of cell proliferation in bone marrow Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Single-cell RNA-seq | Transcriptomes of individual bone marrow cells | Mapping proliferative populations and regulatory networks |
| Flow cytometry with EdU/CFSE | Cell division and DNA synthesis | Quantifying proliferation of HSPCs and progenitors |
| Immunohistochemistry | Protein localization and tissue architecture | Visualizing proliferating cells in bone marrow niche |
| CRISPR knockout screens | Gene function by loss-of-function | Identifying positive regulators of proliferation |
| Western blot and co-IP | Protein expression and interactions | Validating signaling pathway activation |
| Metabolic assays (Seahorse) | Glycolysis and oxidative phosphorylation | Assessing metabolic reprogramming in proliferating cells |
| In vivo irradiation models | Hematopoietic recovery and proliferation | Studying stress-induced changes in marrow proliferation |
Single-cell transcriptomics
Single-cell RNA sequencing enables mapping of proliferative cell populations and their regulatory networks within the bone marrow. Integrated single-cell and transcriptomic analysis has been used to reveal metabolic reprogramming in bone marrow-derived metastatic neuroblastoma. This method is powerful for identifying novel positive regulators of proliferation in specific cell types.
Flow cytometry and proliferation assays
Flow cytometry with dyes such as CFSE or EdU incorporation allows direct measurement of cell division in bone marrow populations. These assays are standard for assessing the effects of genetic perturbations on hematopoietic stem and progenitor cell proliferation.
Histology and imaging of bone marrow
Immunohistochemistry and in situ hybridization can visualize proliferating cells and their spatial relationship to niche components such as osteoblasts and the bone marrow envelope. These methods are essential for understanding the structural context of positive regulation.
CRISPR screening and functional genomics
Pooled CRISPR screens can identify genes whose loss or gain affects bone marrow cell proliferation. This approach is particularly useful for discovering novel regulators in an unbiased manner.
How CRISPR Can Be Used to Study GO:0071864 positive regulation of cell proliferation in bone marrow
Knockout
CRISPR knockout is used to delete candidate genes in hematopoietic cells or niche cells to determine whether they are required for positive regulation of proliferation in the bone marrow. For example, knocking out RORA in B lineage cells can enhance proliferation, consistent with its role as a suppressor. Knocking out BMP signaling components in the microenvironment can reduce leukemic cell proliferation.
Point Mutation
CRISPR point mutation knock-in allows precise introduction of disease-associated mutations to study their effects on bone marrow cell proliferation. This is particularly useful for modeling mutations in signaling molecules or transcription factors that alter proliferative capacity.
Knock-in
Knock-in of reporter genes (e.g., GFP) or tags enables tracking of specific cell populations and their proliferation in the bone marrow. Tagged knock-in models also facilitate biochemical studies of protein interactions within the niche.
Overexpression
CRISPR-mediated overexpression or lentiviral overexpression of growth factors, transcription factors or metabolic enzymes can drive increased proliferation in the bone marrow. For example, overexpression of WNT10B or BMP ligands may enhance proliferative signaling. Overexpression models are valuable for studying gain-of-function mechanisms in disease.
How EDITGENE Supports positive regulation of cell proliferation in bone marrow Research
Researchers studying positive regulation of cell proliferation in bone marrow-related genes often need to determine whether a candidate gene is causally involved in driving or suppressing proliferation. Establishing causality requires precise genetic manipulation, which is where EDITGENE's CRISPR services can accelerate discovery.
Contact EDITGENE today to design your custom CRISPR model for positive regulation of cell proliferation in bone marrow research.
Frequently Asked Questions About positive regulation of cell proliferation in bone marrow
What is GO:0071864?
GO:0071864 is the Gene Ontology term for positive regulation of cell proliferation in bone marrow, defined as any process that activates or increases the frequency, rate or extent of cell proliferation in the bone marrow.
What genes are involved in positive regulation of cell proliferation in bone marrow?
Key genes include WNT10B, BMP ligands, RORA, BCR/ABL1, and various metabolic enzymes and microRNAs such as miR-9-3.
How is bone marrow cell proliferation regulated?
It is regulated by niche-derived signals from osteoblasts, stromal cells and immune cells, as well as intracellular transcription factors and metabolic pathways.
What diseases are associated with abnormal bone marrow cell proliferation?
Myeloid leukemia, B-cell acute lymphoblastic leukemia, metastatic neuroblastoma, and irradiation-induced marrow suppression.
What is the role of WNT10B in bone marrow?
WNT10B stimulates bone formation and is regulated by T regulatory cells, supporting a niche that promotes proliferation.
How does BMP signaling affect bone marrow proliferation?
BMP signaling in the bone marrow microenvironment promotes leukemic cell proliferation and is a therapeutic target in myeloid leukemia.
What is the function of RORA in B-ALL?
RORA suppresses B lineage cell proliferation, and its loss contributes to BCR/ABL1-induced B-ALL pathogenesis.
How can CRISPR be used to study bone marrow cell proliferation?
CRISPR knockout, point mutation, knock-in and overexpression models allow precise manipulation of candidate genes to test their causal role in proliferation.
What methods are used to measure bone marrow cell proliferation?
Flow cytometry with EdU or CFSE, single-cell RNA-seq, immunohistochemistry, and CRISPR screens are commonly used.
Why is the bone marrow niche important for proliferation?
The niche provides structural and soluble signals that positively regulate hematopoietic and other cell proliferation, and its disruption impairs marrow function.
Conclusion
GO:0071864, positive regulation of cell proliferation in bone marrow, represents a critical biological process that governs blood cell production and is hijacked in various malignancies. The integration of niche-derived signals, intracellular transcription factors and metabolic reprogramming ensures appropriate proliferative responses, while their dysregulation leads to leukemia, metastatic disease and marrow failure. Continued research using CRISPR-based models and advanced omics will further elucidate the mechanisms and identify therapeutic targets within this process.
References
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- 2. Lefort S et al.. 2020. Targeting BMP signaling in the bone marrow microenvironment of myeloid leukemia.. Biochem Soc Trans 48(2):411-418 PMID: 32167132
- 3. Andersen TL et al.. 2023. A Critical Role of the Bone Marrow Envelope in Human Bone Remodeling.. J Bone Miner Res 38(6):918-928 PMID: 37038371
- 4. Chu J et al.. 2025. Integrated single-cell and transcriptomic analysis of bone marrow-derived metastatic neuroblastoma reveals molecular mechanisms of metabolic reprogramming.. Sci Rep 15(1):28519 PMID: 40764361
- 5. Lin D et al.. 2022. Immune regulatory effects of microRNA9-3.. Blood Cells Mol Dis 97:102697 PMID: 35872110
- 6. Yin W et al.. 2019. Modulation of Bone and Marrow Niche by Cholesterol.. Nutrients 11(6) PMID: 31234305
- 7. Li N et al.. 2022. The suppressive functions of Rora in B lineage cell proliferation and BCR/ABL1-induced B-ALL pathogenesis.. Int J Biol Sci 18(6):2277-2291 PMID: 35414788
- 8. Ali AM et al.. 1989. Local regulation of haemopoietic stem cell proliferation in mice following irradiation.. Cell Tissue Kinet 22(4):333-41 PMID: 2691099
