Abstract
Stem cells, derived from human adult dental pulp of healthy subjects 30-45 years of age, were cultured, and cells were selected using a FACSorter. A new c-kit*/CD34+/CD45- cell population of stromal bone producing cells (SBP/DPSCs) was selected, expanded, and cultured. These SBP/DPSCs are highly clonogenic and, in culture, differentiate into osteoblast precursors (CD44+/RUNX-2+), still capable of self-renewing, and then in osteoblasts, producing, in vitro, a living autologous fibrous bone (LAB) tissue, which is markedly positive for several bone antibodies. This tissue constitute an ideal source of osteoblasts and mineralized tissue for bone regeneration. In fact, after in vivo transplantation into immunocompromised rats, LAB formed lamellar bone-containing osteocytes. Introduction: Recently it has been reported that human dental pulp stem cells (DPSCs) are detectable, in humans, only up to the age of 30 years and that they are able to produce in vitro only sporadic calcified nodules and to form, after transplantation in vivo, a mineralized tissue. Materials and Methods: Stem cells, derived from human adult dental pulp of healthy subjects 30-45 years of age, were cultured, and cells were selected using a FACSorter. Light microscope, histochemistry, immunofluorescence, and RT-PCR analyses were performed to study both stem and differentiating cells. Results and Conclusions: A new c-kit +/CD34+/CD45- cell population of stromal bone producing cells (SBP/ DPSCs) has been selected by FACSorting, expanded, and cultured. These SBP/DPSCs are highly clonogenic and, in culture, differentiate into osteoblast precursors (CD44+/RUNX-2+), still capable of self-renewing, and in osteoblasts, producing, in vitro, a living autologous fibrous bone (LAB) tissue. This new-formed tissue is markedly positive for several antibodies for bone, including osteonectin, bone sialoprotein, osteocalcin, fibronectin, collagen III, and bone alkaline phosphatase (BALP). Cells producing LAB can be stored at -80°C for a long period of time and are an extraordinary source of osteoblasts and mineralized fibrous bone tissue. In this study, we also showed that, in aged humans, stem cells can be detected from their pulps. The produced LAB is a fibrous bone tissue resembling the human bone during mineralization, with an external layer formed by osteoblasts markedly positive for osteocalcin. This newly formed tissue constitute an ideal source of osteoblasts and mineralized tissue for bone regeneration. In fact, after in vivo transplantation into immunocompromised rats, LAB formed lamellar bone containing osteocytes.
| Original language | English |
|---|---|
| Pages (from-to) | 1394-1402 |
| Number of pages | 9 |
| Journal | Journal of Bone and Mineral Research |
| Volume | 20 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 2005 |
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Keywords
- Adult stem cells
- Dental pulp
- Differentiation
- Fibrous bone
- Osteoblasts
ASJC Scopus subject areas
- Surgery
Cite this
A new population of human adult dental pulp stem cells : A useful source of living autologous fibrous bone tissue (LAB). / Laino, Gregorio; D'Aquino, Riccardo; Graziano, Antonio; Lanza, Vladimiro; Carinci, Francesco; Naro, Fabio; Pirozzi, Giuseppe; Papaccio, Gianpaolo.
In: Journal of Bone and Mineral Research, Vol. 20, No. 8, 08.2005, p. 1394-1402.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A new population of human adult dental pulp stem cells
T2 - A useful source of living autologous fibrous bone tissue (LAB)
AU - Laino, Gregorio
AU - D'Aquino, Riccardo
AU - Graziano, Antonio
AU - Lanza, Vladimiro
AU - Carinci, Francesco
AU - Naro, Fabio
AU - Pirozzi, Giuseppe
AU - Papaccio, Gianpaolo
PY - 2005/8
Y1 - 2005/8
N2 - Stem cells, derived from human adult dental pulp of healthy subjects 30-45 years of age, were cultured, and cells were selected using a FACSorter. A new c-kit*/CD34+/CD45- cell population of stromal bone producing cells (SBP/DPSCs) was selected, expanded, and cultured. These SBP/DPSCs are highly clonogenic and, in culture, differentiate into osteoblast precursors (CD44+/RUNX-2+), still capable of self-renewing, and then in osteoblasts, producing, in vitro, a living autologous fibrous bone (LAB) tissue, which is markedly positive for several bone antibodies. This tissue constitute an ideal source of osteoblasts and mineralized tissue for bone regeneration. In fact, after in vivo transplantation into immunocompromised rats, LAB formed lamellar bone-containing osteocytes. Introduction: Recently it has been reported that human dental pulp stem cells (DPSCs) are detectable, in humans, only up to the age of 30 years and that they are able to produce in vitro only sporadic calcified nodules and to form, after transplantation in vivo, a mineralized tissue. Materials and Methods: Stem cells, derived from human adult dental pulp of healthy subjects 30-45 years of age, were cultured, and cells were selected using a FACSorter. Light microscope, histochemistry, immunofluorescence, and RT-PCR analyses were performed to study both stem and differentiating cells. Results and Conclusions: A new c-kit +/CD34+/CD45- cell population of stromal bone producing cells (SBP/ DPSCs) has been selected by FACSorting, expanded, and cultured. These SBP/DPSCs are highly clonogenic and, in culture, differentiate into osteoblast precursors (CD44+/RUNX-2+), still capable of self-renewing, and in osteoblasts, producing, in vitro, a living autologous fibrous bone (LAB) tissue. This new-formed tissue is markedly positive for several antibodies for bone, including osteonectin, bone sialoprotein, osteocalcin, fibronectin, collagen III, and bone alkaline phosphatase (BALP). Cells producing LAB can be stored at -80°C for a long period of time and are an extraordinary source of osteoblasts and mineralized fibrous bone tissue. In this study, we also showed that, in aged humans, stem cells can be detected from their pulps. The produced LAB is a fibrous bone tissue resembling the human bone during mineralization, with an external layer formed by osteoblasts markedly positive for osteocalcin. This newly formed tissue constitute an ideal source of osteoblasts and mineralized tissue for bone regeneration. In fact, after in vivo transplantation into immunocompromised rats, LAB formed lamellar bone containing osteocytes.
AB - Stem cells, derived from human adult dental pulp of healthy subjects 30-45 years of age, were cultured, and cells were selected using a FACSorter. A new c-kit*/CD34+/CD45- cell population of stromal bone producing cells (SBP/DPSCs) was selected, expanded, and cultured. These SBP/DPSCs are highly clonogenic and, in culture, differentiate into osteoblast precursors (CD44+/RUNX-2+), still capable of self-renewing, and then in osteoblasts, producing, in vitro, a living autologous fibrous bone (LAB) tissue, which is markedly positive for several bone antibodies. This tissue constitute an ideal source of osteoblasts and mineralized tissue for bone regeneration. In fact, after in vivo transplantation into immunocompromised rats, LAB formed lamellar bone-containing osteocytes. Introduction: Recently it has been reported that human dental pulp stem cells (DPSCs) are detectable, in humans, only up to the age of 30 years and that they are able to produce in vitro only sporadic calcified nodules and to form, after transplantation in vivo, a mineralized tissue. Materials and Methods: Stem cells, derived from human adult dental pulp of healthy subjects 30-45 years of age, were cultured, and cells were selected using a FACSorter. Light microscope, histochemistry, immunofluorescence, and RT-PCR analyses were performed to study both stem and differentiating cells. Results and Conclusions: A new c-kit +/CD34+/CD45- cell population of stromal bone producing cells (SBP/ DPSCs) has been selected by FACSorting, expanded, and cultured. These SBP/DPSCs are highly clonogenic and, in culture, differentiate into osteoblast precursors (CD44+/RUNX-2+), still capable of self-renewing, and in osteoblasts, producing, in vitro, a living autologous fibrous bone (LAB) tissue. This new-formed tissue is markedly positive for several antibodies for bone, including osteonectin, bone sialoprotein, osteocalcin, fibronectin, collagen III, and bone alkaline phosphatase (BALP). Cells producing LAB can be stored at -80°C for a long period of time and are an extraordinary source of osteoblasts and mineralized fibrous bone tissue. In this study, we also showed that, in aged humans, stem cells can be detected from their pulps. The produced LAB is a fibrous bone tissue resembling the human bone during mineralization, with an external layer formed by osteoblasts markedly positive for osteocalcin. This newly formed tissue constitute an ideal source of osteoblasts and mineralized tissue for bone regeneration. In fact, after in vivo transplantation into immunocompromised rats, LAB formed lamellar bone containing osteocytes.
KW - Adult stem cells
KW - Dental pulp
KW - Differentiation
KW - Fibrous bone
KW - Osteoblasts
UR - http://www.scopus.com/inward/record.url?scp=22744443730&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=22744443730&partnerID=8YFLogxK
U2 - 10.1359/JBMR.050325
DO - 10.1359/JBMR.050325
M3 - Article
C2 - 16007337
AN - SCOPUS:22744443730
VL - 20
SP - 1394
EP - 1402
JO - Journal of Bone and Mineral Research
JF - Journal of Bone and Mineral Research
SN - 0884-0431
IS - 8
ER -