Bone RegenerationNCT00435877
Procurement of Tissue Samples for Cell Cultures and Analyses
An observational study of Bone Regeneration and Fracture Healing, run by National Institute of Dental and Craniofacial Research (NIDCR) at 1 site in United States.
Trial summary
This study will determine if bone marrow stromal cells can be used as a graft for regeneration of bony defects. These cells have the ability to form new bone and to support the formation of blood. Read more about this study
- Who is it for?
- Ages 18 to 80 yearsHealthy volunteers can take part
- Conditions the study is for
- Bone Regeneration, Fracture Healing, Cell Culture Techniques
- How many people
- 2 participants
- Where
- 1 siteUnited States
- Study dates
- 29 Jan 2007to 5 Nov 2012
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Any patient over the age of 18 years who is undergoing a clinically indicated or elective surgery that entails removal of bone with red marrow,periosteum, dermis, spleen, thymus, muscle and adipose tissue.
- All patients must sign a document of informed consent indicating their understanding that the specimens collected and demographic information provided is only for research purposes.
Who cannot join
- Any patient that has a history of metabolic bone disease.
- Any patient that has cancer of any type, or has been treated for cancer of any type.
- Any patient that has been treated with a reagent known to affect bone metabolism (bisphosphonates, steroids, vitamin D)
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Procurement of Normal Bone, Dermis, Spleen, Thymus and Adipose Tissue for Establishment of Cell Cultures and Tissue Analyses
This study will determine if bone marrow stromal cells can be used as a graft for regeneration of bony defects. These cells have the ability to form new bone and to support the formation of blood. Stromal cells have been identified in other tissues, such as the dermis (underside of skin), spleen, thymus and fat, but it is not known whether these cells can make bone and support blood formation as well as bone marrow stromal cells.
Patients undergoing surgery at Suburban Hospital in Bethesda, Maryland, in which some of the bone, dermis, spleen, thymus or fat tissue is removed may be eligible for this study.
For this study, a small piece of the tissue that is removed during surgery for examination by a pathologist will be used for research. Stromal cells from the specimen will be collected and grown in the laboratory. The genes and proteins in the different cell types will be compared, and the ability of stromal cells from the different tissues to make bone and to support the formation of blood will be studied.
Read the detailed description
Background: It is now apparent that virtually every human post-natal tissue contains some type of stem/progenitor cell population that is responsible for tissue turnover and repair. Our previous studies have identified a subset of human bone marrow stromal cells (BMSCs) that is multi-potent and able to regenerate bone, cartilage, myelosupportive stroma and adipocytes, whereas stromal cells derived from human spleen (SpSCs) and thymus (TSCs) only form myelosupportive stroma. Recent studies suggest that human adipose-derived stromal cells (ASCs) may be similar to BMSCs, whereas stromal cells derived from human dermis (DSCs) have none of these properties (and serve as a negative control for most experiments in vitro and in vivo). How similar or dissimilar these different stromal cell populations are has yet to be determined. Molecular profiling is needed to compare these different populations and in order to elucidate the factors that control differentiation stromal cells into one cell type or another.
Objectives: Surgical waste (bone with red marrow, dermis, spleen, thymus and adipose tissues) from males and females of varying ages undergoing clinically indicated surgical procedures will be used to establish stromal cell cultures to study the molecular profile and differentiation capacity of the stromal cell populations from different tissues and to further characterize the regulation of gene expression and protein synthesis in these stem/progenitor cells.
Eligibility: Any patient who is undergoing clinically indicated surgery that entails removal of bone with red marrow, dermis, spleen, thymus and adipose tissue, and who do not have: 1) a history of metabolic bone disease, 2) any form of cancer or have been treated by chemotherapy or irradiation for cancer, and 3) have not received agents known to affect bone metabolism.
Design: Normal surgical waste (bone with red marrow, dermis, spleen, thymus and adipose) from procedures that are performed on males and females at Suburban Hospital will be placed in nutrient medium (provided by NIDCR) and sent to the NIDCR for the establishment of cell culture strains. Only the age, gender and site from which the tissue was removed will be recorded. The cell cultures from the different tissues will be used to determine their phenotypic character and differentiation properties by molecular profiling, and for studies to elucidate the regulation of gene expression and protein synthesis. Similarly, a portion of the samples obtained at Suburban Hospital will be used to generate histological sections of the normal tissues that will be used to screen newly developed antibodies and molecular probes. In some cases, RNA will be extracted from the tissues for RT-PCR analysis. These samples (cells, sections, mRNA) will also serve as normal controls for studies performed on samples obtained from patients with various diseases recruited to NIH under current NIH protocols (97-D-0055, 97-D-0145, 01-D-0184).
- Conditions
- Bone Regeneration, Fracture Healing, Cell Culture Techniques, Tissue Engineering, Differentiation
- Keywords
- Connective Tissue, Stromal Cells, Surgical Waste, In Vivo Studies, Tissue Analysis
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Feb 2007 (estimated)
- Study start29 Jan 2007
- Study completion5 Nov 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Bone RegenerationStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Time perspective
- Prospective
- Enrolment
- 2 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
- Sponsor type
- US National Institutes of Health
- Investigators
- Pamela G Robey, Ph.D., Principal investigator, National Institute of Dental and Craniofacial Research (NIDCR)
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00435877
- Sponsor's protocol ID
- 999907044
- Other IDs
- 07-D-N044
- Status last verified
- 5 Nov 2012
- First submitted
- 15 Feb 2007
- Last updated
- 17 Dec 2019
- Results posted
- No
Publications
Bianco P, Riminucci M, Kuznetsov S, Robey PG. Multipotential cells in the bone marrow stroma: regulation in the context of organ physiology. Crit Rev Eukaryot Gene Expr. 1999;9(2):159-73. doi: 10.1615/critreveukargeneexpr.v9.i2.30.
PubMed 10445154Friedenstein AJ, Chailakhyan RK, Latsinik NV, Panasyuk AF, Keiliss-Borok IV. Stromal cells responsible for transferring the microenvironment of the hemopoietic tissues. Cloning in vitro and retransplantation in vivo. Transplantation. 1974 Apr;17(4):331-40. doi: 10.1097/00007890-197404000-00001. No abstract available.
PubMed 4150881Gronthos S, Franklin DM, Leddy HA, Robey PG, Storms RW, Gimble JM. Surface protein characterization of human adipose tissue-derived stromal cells. J Cell Physiol. 2001 Oct;189(1):54-63. doi: 10.1002/jcp.1138.
PubMed 11573204
Study at a glance
From the registry record, last updated by the sponsor on 17 Dec 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Procurement of Normal Bone, Dermis, Spleen, Thymus and Adipose Tissue for Establishment of Cell Cultures and Tissue Analyses
- ClinicalTrials.gov ID
- NCT00435877
- Acronym / sponsor ID
- 999907044
- Conditions
- Bone Regeneration, Fracture Healing, Cell Culture Techniques, Tissue Engineering, Differentiation
- Keywords
- Connective Tissue, Stromal Cells, Surgical Waste, In Vivo Studies, Tissue Analysis
- Study type
- Observational
- Recruitment status
- Terminated
- Enrolment
- 2 participants (actual)
- Lead sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)US National Institutes of Health
- Study start
- 29 Jan 2007
- Study completion
- 5 Nov 2012
- First posted
- 16 Feb 2007 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will determine if bone marrow stromal cells can be used as a graft for regeneration of bony defects. These cells have the ability to form new bone and to support the formation of blood. Stromal cells have been identified in other tissues, such as the dermis (underside of skin), spleen, thymus and fat, but it is not known whether these cells can make bone and support blood formation as well as bone marrow stromal cells.
Patients undergoing surgery at Suburban Hospital in Bethesda, Maryland, in which some of the bone, dermis, spleen, thymus or fat tissue is removed may be eligible for this study.
For this study, a small piece of the tissue that is removed during surgery for examination by a pathologist will be used for research. Stromal cells from the specimen will be collected and grown in the laboratory. The genes and proteins in the different cell types will be compared, and the ability of stromal cells from the different tissues to make bone and to support the formation of blood will be studied.
Detailed description
Background: It is now apparent that virtually every human post-natal tissue contains some type of stem/progenitor cell population that is responsible for tissue turnover and repair. Our previous studies have identified a subset of human bone marrow stromal cells (BMSCs) that is multi-potent and able to regenerate bone, cartilage, myelosupportive stroma and adipocytes, whereas stromal cells derived from human spleen (SpSCs) and thymus (TSCs) only form myelosupportive stroma. Recent studies suggest that human adipose-derived stromal cells (ASCs) may be similar to BMSCs, whereas stromal cells derived from human dermis (DSCs) have none of these properties (and serve as a negative control for most experiments in vitro and in vivo). How similar or dissimilar these different stromal cell populations are has yet to be determined. Molecular profiling is needed to compare these different populations and in order to elucidate the factors that control differentiation stromal cells into one cell type or another.
Objectives: Surgical waste (bone with red marrow, dermis, spleen, thymus and adipose tissues) from males and females of varying ages undergoing clinically indicated surgical procedures will be used to establish stromal cell cultures to study the molecular profile and differentiation capacity of the stromal cell populations from different tissues and to further characterize the regulation of gene expression and protein synthesis in these stem/progenitor cells.
Eligibility: Any patient who is undergoing clinically indicated surgery that entails removal of bone with red marrow, dermis, spleen, thymus and adipose tissue, and who do not have: 1) a history of metabolic bone disease, 2) any form of cancer or have been treated by chemotherapy or irradiation for cancer, and 3) have not received agents known to affect bone metabolism.
Design: Normal surgical waste (bone with red marrow, dermis, spleen, thymus and adipose) from procedures that are performed on males and females at Suburban Hospital will be placed in nutrient medium (provided by NIDCR) and sent to the NIDCR for the establishment of cell culture strains. Only the age, gender and site from which the tissue was removed will be recorded. The cell cultures from the different tissues will be used to determine their phenotypic character and differentiation properties by molecular profiling, and for studies to elucidate the regulation of gene expression and protein synthesis. Similarly, a portion of the samples obtained at Suburban Hospital will be used to generate histological sections of the normal tissues that will be used to screen newly developed antibodies and molecular probes. In some cases, RNA will be extracted from the tissues for RT-PCR analysis. These samples (cells, sections, mRNA) will also serve as normal controls for studies performed on samples obtained from patients with various diseases recruited to NIH under current NIH protocols (97-D-0055, 97-D-0145, 01-D-0184).
Study design
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Any patient over the age of 18 years who is undergoing a clinically indicated or elective surgery that entails removal of bone with red marrow,periosteum, dermis, spleen, thymus, muscle and adipose tissue.
- All patients must sign a document of informed consent indicating their understanding that the specimens collected and demographic information provided is only for research purposes.
Key exclusion criteria (3 listed)
- Any patient that has a history of metabolic bone disease.
- Any patient that has cancer of any type, or has been treated for cancer of any type.
- Any patient that has been treated with a reagent known to affect bone metabolism (bisphosphonates, steroids, vitamin D)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
The study was stopped early. Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 17 Dec 2019.
- Background: PubMed 10445154Bianco P, Riminucci M, Kuznetsov S, Robey PG. Multipotential cells in the bone marrow stroma: regulation in the context of organ physiology. Crit Rev Eukaryot Gene Expr. 1999;9(2):159-73. doi: 10.1615/critreveukargeneexpr.v9.i2.30.
- Background: PubMed 4150881Friedenstein AJ, Chailakhyan RK, Latsinik NV, Panasyuk AF, Keiliss-Borok IV. Stromal cells responsible for transferring the microenvironment of the hemopoietic tissues. Cloning in vitro and retransplantation in vivo. Transplantation. 1974 Apr;17(4):331-40. doi: 10.1097/00007890-197404000-00001. No abstract available.
- Background: PubMed 11573204Gronthos S, Franklin DM, Leddy HA, Robey PG, Storms RW, Gimble JM. Surface protein characterization of human adipose tissue-derived stromal cells. J Cell Physiol. 2001 Oct;189(1):54-63. doi: 10.1002/jcp.1138.
Related trials for Bone Regeneration
Not yet recruitingEarly Phase 1
The Efficacy of Exosomes Combined With Synthetic Bone Graft for the Treatment of Periodontal Intra-bony Defects
Intra-Bony Defects in Periodontitis Patients
Active, not recruitingObservational study
Long-Term Stability of Soft and Hard Tissues After Guided Bone Regeneration in the Maxillary Anterior Region
Alveolar Bone Deficiency
Recruiting
Guided Bone Regeneration Using Polydioxanone (PDO) Membrane in Sockets After Tooth Extraction
Surgery, Oral
Not yet recruiting
Comparison of Three Autogenous Bone and Xenograft Ratios for Horizontal Ridge Augmentation
Horizontal Alveolar Ridge Deficiency
Not yet recruitingPhase 1/2
Alveolar Ridge Preservation (ARP) Study Using Alloplastic Biomaterial and a Resorbable Synthetic Membrane. A Digital Workflow (CBCT/Scanner) Evaluates Hard and Soft Tissue Volumetric Changes at 4 Months, Validating Support for the Gingival Phenotype and Buccal Bone Plate.
Alveolar Ridge Augmentation, Bone Substitutes
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Pamela G Robey, Ph.D. principal investigator
National Institute of Dental and Craniofacial Research (NIDCR)
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Bone Regeneration and Fracture Healing, run by National Institute of Dental and Craniofacial Research (NIDCR) at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: stopped early, as of the sponsor's last update on 17 Dec 2019. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study was stopped early. Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00435877, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Dec 2019.