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Pancreatic Cancer Metastases Harbor Evidence of Polyclonality

Open access
Maddipati, Ravikanth, Stanger, Ben Z.·2015·Cancer Discovery

Abstract

Studies of the cancer genome have demonstrated that tumors are composed of multiple subclones with varied genetic and phenotypic properties. However, little is known about how metastases arise and evolve from these subclones. To understand the cellular dynamics that drive metastasis, we used multicolor lineage-tracing technology in an autochthonous mouse model of pancreatic cancer. Here, we report that precursor lesions exhibit significant clonal heterogeneity but that this diversity decreases during premalignant progression. Furthermore, we present evidence that a significant fraction of metastases are polyclonally seeded by distinct tumor subclones. Finally, we show that clonality during metastatic growth—leading to either monoclonal or polyclonal expansion—differs based on the site of metastatic invasion. These results provide an unprecedented window into the cellular dynamics of tumor evolution and suggest that heterotypic interactions between tumor subpopulations contribute to metastatic progression in native tumors. Significance: Studies of tumor heterogeneity indicate that distinct tumor subclones interact during cancer progression. Here, we demonstrate by lineage tracing that metastases often involve seeding by more than one clone and that subsequent cellular outgrowth depends on the metastatic site. These findings provide insight into clonal diversity and evolution in metastatic disease. Cancer Discov; 5(10); 1086–97. ©2015 AACR. This article is highlighted in the In This Issue feature, p. 1005

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Metadata

Authors
Maddipati, R., & Stanger, B. Z.
Venue
Cancer Discovery
Published
2015-09-30
Volume
5
Issue
10
Pages
1086-1097
ISSN
  • 2159-8274 (ISSN-L)
  • 2159-8290
OpenAlex
W2170858024
Cited by
298
References
6
FWCI
7.95
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Pancreatic Cancer Metastases Harbor Evidence of Polyclonality. https://app.cochat.ai/papers/10.1158/2159-8290.cd-15-0120
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Maddipati, R., & Stanger, B. Z. (2015). Pancreatic Cancer Metastases Harbor Evidence of Polyclonality. Cancer Discovery. https://doi.org/10.1158/2159-8290.cd-15-0120

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