Insights into the Steps of Breast Cancer-Brain Metastases Development: Tumor Cell Interactions with the Blood-Brain Barrier
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Insights into the Steps of Breast Cancer-Brain Metastases Development: Tumor Cell Interactions with the Blood-Brain Barrier. / Hamester, Fabienne; Stürken, Christine; Saygi, Ceren; Qi, Minyue; Legler, Karen; Gorzelanny, Christian; Robador, José R; Schmalfeldt, Barbara; Laakmann, Elena; Müller, Volkmar; Witzel, Isabell; Oliveira-Ferrer, Leticia.
In: INT J MOL SCI, Vol. 23, No. 3, 1900, 08.02.2022.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Insights into the Steps of Breast Cancer-Brain Metastases Development: Tumor Cell Interactions with the Blood-Brain Barrier
AU - Hamester, Fabienne
AU - Stürken, Christine
AU - Saygi, Ceren
AU - Qi, Minyue
AU - Legler, Karen
AU - Gorzelanny, Christian
AU - Robador, José R
AU - Schmalfeldt, Barbara
AU - Laakmann, Elena
AU - Müller, Volkmar
AU - Witzel, Isabell
AU - Oliveira-Ferrer, Leticia
PY - 2022/2/8
Y1 - 2022/2/8
N2 - Brain metastases (BM) represent a growing problem for breast cancer (BC) patients. Recent studies have demonstrated a strong impact of the BC molecular subtype on the incidence of BM development. This study explores the interaction between BC cells of different molecular subtypes and the blood-brain barrier (BBB). We compared the ability of BC cells of different molecular subtypes to overcome several steps (adhesion to the brain endothelium, disruption of the BBB, and invasion through the endothelial layer) during cerebral metastases formation, in vitro as well as in vivo. Further, the impact of these cells on the BBB was deciphered at the molecular level by transcriptome analysis of the triple-negative (TNBC) cells themselves as well as of hBMECs after cocultivation with BC cell secretomes. Compared to luminal BC cells, TNBC cells have a greater ability to influence the BBB in vitro and consequently develop BM in vivo. The brain-seeking subline and parental TNBC cells behaved similarly in terms of adhesion, whereas the first showed a stronger impact on the brain endothelium integrity and increased invasive ability. The comparative transcriptome revealed potential brain-metastatic-specific key regulators involved in the aforementioned processes, e.g., the angiogenesis-related factors TNXIP and CXCL1. In addition, the transcriptomes of the two TNBC cell lines strongly differed in certain angiogenesis-associated factors and in several genes related to cell migration and invasion. Based on the present study, we hypothesize that the tumor cell's ability to disrupt the BBB via angiogenesis activation, together with increased cellular motility, is required for BC cells to overcome the BBB and develop brain metastases.
AB - Brain metastases (BM) represent a growing problem for breast cancer (BC) patients. Recent studies have demonstrated a strong impact of the BC molecular subtype on the incidence of BM development. This study explores the interaction between BC cells of different molecular subtypes and the blood-brain barrier (BBB). We compared the ability of BC cells of different molecular subtypes to overcome several steps (adhesion to the brain endothelium, disruption of the BBB, and invasion through the endothelial layer) during cerebral metastases formation, in vitro as well as in vivo. Further, the impact of these cells on the BBB was deciphered at the molecular level by transcriptome analysis of the triple-negative (TNBC) cells themselves as well as of hBMECs after cocultivation with BC cell secretomes. Compared to luminal BC cells, TNBC cells have a greater ability to influence the BBB in vitro and consequently develop BM in vivo. The brain-seeking subline and parental TNBC cells behaved similarly in terms of adhesion, whereas the first showed a stronger impact on the brain endothelium integrity and increased invasive ability. The comparative transcriptome revealed potential brain-metastatic-specific key regulators involved in the aforementioned processes, e.g., the angiogenesis-related factors TNXIP and CXCL1. In addition, the transcriptomes of the two TNBC cell lines strongly differed in certain angiogenesis-associated factors and in several genes related to cell migration and invasion. Based on the present study, we hypothesize that the tumor cell's ability to disrupt the BBB via angiogenesis activation, together with increased cellular motility, is required for BC cells to overcome the BBB and develop brain metastases.
KW - Animals
KW - Blood-Brain Barrier
KW - Brain Neoplasms/genetics
KW - Breast Neoplasms/genetics
KW - Cell Communication
KW - Cell Line, Tumor
KW - Cell Movement
KW - Female
KW - Gene Expression Profiling/methods
KW - Gene Expression Regulation, Neoplastic
KW - Gene Regulatory Networks
KW - Humans
KW - MCF-7 Cells
KW - Mice
KW - Neoplasm Transplantation
U2 - 10.3390/ijms23031900
DO - 10.3390/ijms23031900
M3 - SCORING: Journal article
C2 - 35163822
VL - 23
JO - INT J MOL SCI
JF - INT J MOL SCI
SN - 1661-6596
IS - 3
M1 - 1900
ER -