Abstract
Kaposi's sarcoma (KS) is characterized by hyperproliferation of spindle cells that have an endothelial origin and assume their characteristic features upon infection with human herpesvirus-8, the causative agent for KS. The multifocal nature of KS suggests that spindle cells derive from circulating HHV8-infected precursors that yet lack identification. We investigated whether endothelial colony-forming cells (ECFCs) obtained from KS patients may be putative precursors of spindle cells by assessing whether their in vitro behavior may evoke the in vivo behavior of KS spindle cells. We isolated and cultured ECFCs from the blood of 83 patients with classic KS and compared them with ECFCs obtained from 86 healthy donors. ECFCs were highly increased in the blood of classic KS patients; they showed higher proliferative and vasculogenic potential and higher production of IL-6 than control ECFCs. Similarly to spindle cells in KS lesions, a variable proportion of cells within each ECFC colony expressed the human herpesvirus-8 latency-associated nuclear antigen. ECFCs obtained from classic KS patients evoked KS spindle cell behavior, thus supporting the hypothesis that ECFCs may be putative precursors of spindle cells. ECFCs can therefore represent a noninvasive tool for studying KS and screening drug activity, thus possibly guiding personalized care for KS patients.
| Original language | English |
|---|---|
| Pages (from-to) | 1533-1540 |
| Number of pages | 8 |
| Journal | Journal of Investigative Dermatology |
| Volume | 137 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 1 2017 |
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ASJC Scopus subject areas
- Biochemistry
- Molecular Biology
- Dermatology
- Cell Biology
Cite this
Increased Frequency and Vasculogenic Potential of Endothelial Colony-Forming Cells in Patients with Kaposi's Sarcoma. / Calcaterra, Francesca; Brambilla, Lucia; Colombo, Elena; Tourlaki, Athanasia; Veraldi, Stefano; Carenza, Claudia; Mavilio, Domenico; Della Bella, Silvia.
In: Journal of Investigative Dermatology, Vol. 137, No. 7, 01.07.2017, p. 1533-1540.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Increased Frequency and Vasculogenic Potential of Endothelial Colony-Forming Cells in Patients with Kaposi's Sarcoma
AU - Calcaterra, Francesca
AU - Brambilla, Lucia
AU - Colombo, Elena
AU - Tourlaki, Athanasia
AU - Veraldi, Stefano
AU - Carenza, Claudia
AU - Mavilio, Domenico
AU - Della Bella, Silvia
PY - 2017/7/1
Y1 - 2017/7/1
N2 - Kaposi's sarcoma (KS) is characterized by hyperproliferation of spindle cells that have an endothelial origin and assume their characteristic features upon infection with human herpesvirus-8, the causative agent for KS. The multifocal nature of KS suggests that spindle cells derive from circulating HHV8-infected precursors that yet lack identification. We investigated whether endothelial colony-forming cells (ECFCs) obtained from KS patients may be putative precursors of spindle cells by assessing whether their in vitro behavior may evoke the in vivo behavior of KS spindle cells. We isolated and cultured ECFCs from the blood of 83 patients with classic KS and compared them with ECFCs obtained from 86 healthy donors. ECFCs were highly increased in the blood of classic KS patients; they showed higher proliferative and vasculogenic potential and higher production of IL-6 than control ECFCs. Similarly to spindle cells in KS lesions, a variable proportion of cells within each ECFC colony expressed the human herpesvirus-8 latency-associated nuclear antigen. ECFCs obtained from classic KS patients evoked KS spindle cell behavior, thus supporting the hypothesis that ECFCs may be putative precursors of spindle cells. ECFCs can therefore represent a noninvasive tool for studying KS and screening drug activity, thus possibly guiding personalized care for KS patients.
AB - Kaposi's sarcoma (KS) is characterized by hyperproliferation of spindle cells that have an endothelial origin and assume their characteristic features upon infection with human herpesvirus-8, the causative agent for KS. The multifocal nature of KS suggests that spindle cells derive from circulating HHV8-infected precursors that yet lack identification. We investigated whether endothelial colony-forming cells (ECFCs) obtained from KS patients may be putative precursors of spindle cells by assessing whether their in vitro behavior may evoke the in vivo behavior of KS spindle cells. We isolated and cultured ECFCs from the blood of 83 patients with classic KS and compared them with ECFCs obtained from 86 healthy donors. ECFCs were highly increased in the blood of classic KS patients; they showed higher proliferative and vasculogenic potential and higher production of IL-6 than control ECFCs. Similarly to spindle cells in KS lesions, a variable proportion of cells within each ECFC colony expressed the human herpesvirus-8 latency-associated nuclear antigen. ECFCs obtained from classic KS patients evoked KS spindle cell behavior, thus supporting the hypothesis that ECFCs may be putative precursors of spindle cells. ECFCs can therefore represent a noninvasive tool for studying KS and screening drug activity, thus possibly guiding personalized care for KS patients.
UR - http://www.scopus.com/inward/record.url?scp=85021363593&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85021363593&partnerID=8YFLogxK
U2 - 10.1016/j.jid.2017.02.979
DO - 10.1016/j.jid.2017.02.979
M3 - Article
AN - SCOPUS:85021363593
VL - 137
SP - 1533
EP - 1540
JO - Journal of Investigative Dermatology
JF - Journal of Investigative Dermatology
SN - 0022-202X
IS - 7
ER -