Expansion of Umbilical Cord Blood Using a Unique Bio-system

Ex Vivo Expansion of Umbilical Cord Blood Using a Unique Bio-system

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01061879

Enrollment

Registered

2010-02-03

Start date

2010-02-28

Completion date

2010-11-30

Last updated

2013-01-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pregnancy

Keywords

umbilical cord, umbilical cord blood collection, pregnancy

Brief summary

By doing this study, researchers hope to develop a special technique and laboratory conditions to help support umbilical stem cell growth and multiplication. In this project, researchers propose a three dimensional (3D) microenvironment that mimics the bone marrow stem cell microenvironment, with its supporting cells of osteoblasts and stromal cells. In theory, this will result in better expansion of cord blood stem cells ex vivo.

Detailed description

To successfully expand umbilical cord blood stem cells ex vivo, a microenvironment that resembles the stem cell microenvironment, or stem cell 'niche' should be created. In designing this bio-system, we make use of several observations. First, bone osteoblasts are important in promoting hematopoietic stem cell expansion, accordingly, this bio-system will ensure the physical proximity of the cord blood stem cells to a 3D bone tissue derived from mesenchymal stem cells (MSCs). These MSCs will be isolated from Wharton's jelly, and by using an osteogenic medium and special scaffolds, these MSCs will differentiate into osteogenic progenitors creating a 3D bone structure. The other observation is that, co-culture of cord blood stem cells with mesenchymal stem cells is superior to liquid cultures in terms of ex vivo expansion , accordingly, in this experiment, undifferentiated MSCs will be co-cultured with cord blood stem cells in this created 3D bone structure. This is a unique design that has the potential to expand cord blood stem cells more efficiently.

Interventions

None listed

Eligibility

Sex/Gender

FEMALE

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* females that consent to permit researchers collect the discarded umbilical cords from the placenta and use for research purposes.

Exclusion criteria

Design outcomes

Primary

Measure	Time frame	Description
bio-system for ex-vivo expansion of umbilical cord blood stem cells	one year	To successfully expand the umbilical cord blood stem cells, a microenvironment that resembles the stem cell microenvironment, or stem cell 'niche' should be created. In designing this bio-system, we make use of several observations. Firstly, bone osteoblasts are important in promoting hematopoietic stem cell expansion , accordingly, this bio-system will ensure the physical proximity of the cord blood stem cells to a 3D bone tissue derived from mesenchymal stem cells (MSCs). These MSCs will be isolated from Wharton's jelly, and by using an osteogenic medium and special scaffolds, these MSCs will differentiate into osteogenic progenitors creating a 3D bone structure . The other observation is that, co-culture of cord blood stem cells with mesenchymal stem cells is superior to liquid cultures in terms of ex vivo expansion , accordingly, in this experiment, undifferentiated MSCs will be co-cultured with cord blood stem cells in the created 3D bone structure.

Countries

United States

Outcome results