Establishment of BCWM.1 cell line for Waldenström's macroglobulinemia with productive in vivo engraftment in SCID-hu mice.
A significant impairment in understanding the biology and advancing therapeutics for Waldenstrom's macroglobulinemia (WM) has been the lack of a representative cell line and animal model. We, therefore, report on the establishment of the BCWM.1 cell line, which was derived from the long-term culture of CD19(+) selected bone marrow lymphoplasmacytic cells isolated from an untreated patient with WM. BCWM.1 cells morphologically resemble lymphoplasmacytic cells (LPC) and propagate in RPMI-1640 medium supplemented with 10% fetal bovine serum. Phenotypic characterization by flow cytometric analysis demonstrated typical WM LPC characteristics: CD5(-), CD10(-), CD19(+), CD20(+), CD23(+), CD27(-), CD38(+), CD138(+), CD40(+), CD52(+), CD70(+), CD117(+), cIgM(+), cIgG(-), cIgA(-), ckappa(-), clambda(+), as well as the survival proteins APRIL and BLYS, and their receptors TACI, BCMA and BAFF-R. Enzyme-linked immunosorbent assay studies demonstrated secretion of IgMlambda and soluble CD27. Karyotypic and multicolor fluorescence in situ hybridization studies did not demonstrate cytogenetic abnormalities. Molecular analysis of BCWM.1 cells confirmed clonality by determination of IgH rearrangements. Inoculation of BCWM.1 cells in human bone marrow chips implanted in severe combined immunodeficient-hu mice led to rapid engraftment of tumor cells and serum detection of human IgM, lambda, and soluble CD27. These studies support the use of BCWM.1 cells as an appropriate model for the study of WM, which in conjunction with the severe combined immunodeficient-hu mouse model may be used as a convenient model for studies focused on both WM pathogenesis and development of targeted therapies for WM.
Ditzel Santos
Daniel
D
Bing Center for Waldenström's Macroglobulinemia, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
Ho
Allen W
AW
Tournilhac
Olivier
O
Hatjiharissi
Evdoxia
E
Leleu
Xavier
X
Xu
Lian
L
Tassone
Pierfrancesco
P
Neri
Paola
P
Hunter
Zachary R
ZR
Chemaly
Mariana A Z
MA
Branagan
Andrew R
AR
Manning
Robert J
RJ
Patterson
Christopher J
CJ
Moreau
Anne Sophie
AS
Ciccarelli
Bryan
B
Adamia
Sophia
S
Kriangkum
Jitra
J
Kutok
Jeffery L
JL
Tai
Yu-Tzu
YT
Zhang
Jiangwen
J
Pilarski
Linda M
LM
Anderson
Kenneth C
KC
Munshi
Nikhil
N
Treon
Steven P
SP
D000818:Animals; D002460:Cell Line; D002478:Cells, Cultured; D004195:Disease Models, Animal; D006085:Graft Survival; D006801:Humans; D051379:Mice; D016513:Mice, SCID; D008822:Mice, Transgenic; D014183:Transplantation, Heterologous; D008258:Waldenstrom Macroglobulinemia / Q000473:pathology*