Molecular changes in pre-metastatic lymph nodes of esophageal cancer patients
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Molecular changes in pre-metastatic lymph nodes of esophageal cancer patients. / Otto, Benjamin; Koenig, Alexandra M; Tolstonog, Genrich V; Jeschke, Anke; Klätschke, Kristin; Vashist, Yogesh K; Wicklein, Daniel; Wagener, Christoph; Izbicki, Jakob R; Streichert, Thomas.
In: PLOS ONE, Vol. 9, No. 7, 21.07.2014, p. e102552.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Molecular changes in pre-metastatic lymph nodes of esophageal cancer patients
AU - Otto, Benjamin
AU - Koenig, Alexandra M
AU - Tolstonog, Genrich V
AU - Jeschke, Anke
AU - Klätschke, Kristin
AU - Vashist, Yogesh K
AU - Wicklein, Daniel
AU - Wagener, Christoph
AU - Izbicki, Jakob R
AU - Streichert, Thomas
PY - 2014/7/21
Y1 - 2014/7/21
N2 - Lymph node metastasis indicates poor prognosis in esophageal cancer. To understand the underlying mechanisms, most studies so far focused on investigating the tumors themselves and/or invaded lymph nodes. However they neglected the potential events within the metastatic niche, which precede invasion. Here we report the first description of these regulations in patients on transcription level. We determined transcriptomic profiles of still metastasis-free regional lymph nodes for two patient groups: patients classified as pN1 (n = 9, metastatic nodes exist) or pN0 (n = 5, no metastatic nodes exist). All investigated lymph nodes, also those from pN1 patients, were still metastasis-free. The results show that regional lymph nodes of pN1 patients differ decisively from those of pN0 patients--even before metastasis has taken place. In the pN0 group distinct immune response patterns were observed. In contrast, lymph nodes of the pN1 group exhibited a clear profile of reduced immune response and reduced proliferation, but increased apoptosis, enhanced hypoplasia and morphological conversion processes. DKK1 was the most significant gene associated with the molecular mechanisms taking place in lymph nodes of patients suffering from metastasis (pN1). We assume that the two molecular profiles observed constitute different stages of a progressive disease. Finally we suggest that DKK1 might play an important role within the mechanisms leading to lymph node metastasis.
AB - Lymph node metastasis indicates poor prognosis in esophageal cancer. To understand the underlying mechanisms, most studies so far focused on investigating the tumors themselves and/or invaded lymph nodes. However they neglected the potential events within the metastatic niche, which precede invasion. Here we report the first description of these regulations in patients on transcription level. We determined transcriptomic profiles of still metastasis-free regional lymph nodes for two patient groups: patients classified as pN1 (n = 9, metastatic nodes exist) or pN0 (n = 5, no metastatic nodes exist). All investigated lymph nodes, also those from pN1 patients, were still metastasis-free. The results show that regional lymph nodes of pN1 patients differ decisively from those of pN0 patients--even before metastasis has taken place. In the pN0 group distinct immune response patterns were observed. In contrast, lymph nodes of the pN1 group exhibited a clear profile of reduced immune response and reduced proliferation, but increased apoptosis, enhanced hypoplasia and morphological conversion processes. DKK1 was the most significant gene associated with the molecular mechanisms taking place in lymph nodes of patients suffering from metastasis (pN1). We assume that the two molecular profiles observed constitute different stages of a progressive disease. Finally we suggest that DKK1 might play an important role within the mechanisms leading to lymph node metastasis.
U2 - 10.1371/journal.pone.0102552
DO - 10.1371/journal.pone.0102552
M3 - SCORING: Journal article
C2 - 25048826
VL - 9
SP - e102552
JO - PLOS ONE
JF - PLOS ONE
SN - 1932-6203
IS - 7
ER -