The DOI matches its Crossref record; 31 of the 31 references it cites were found in a registry or an index.
Let-7 expression defines two differentiation stages of cancer
Open accessAbstract
The early phases of carcinogenesis resemble embryonic development, often involving the reexpression of embryonic mesenchymal genes. The NCI60 panel of human tumor cell lines can genetically be subdivided into two superclusters (SCs) that correspond to CD95 Type I and II cells. SC1 cells are characterized by a mesenchymal and SC2 cells by an epithelial gene signature, suggesting that SC1 cells represent less differentiated, advanced stages of cancer. miRNAs are small 20- to 22-nucleotide-long noncoding RNAs that inhibit gene expression at the posttranscriptional level. By performing miRNA expression analysis on 10 Type I and 10 Type II cells, we have determined that SC1 cells express low and SC2 cells high levels of the miRNA let-7, respectively, suggesting that let-7 is a marker for less advanced cancers. Expression of the let-7 target high-mobility group A2 (HMGA2), an early embryonic gene, but not of classical epithelial or mesenchymal markers such as E-cadherin or vimentin, inversely correlated with let-7 expression in SC1 and SC2 cells. Using ovarian cancer as a model, we demonstrate that expression of let-7 and HMGA2 is a better predictor of prognosis than classical markers such as E-cadherin, vimentin, and Snail. These data identify loss of let-7 expression as a marker for less differentiated cancer.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Molecular portraits of human breast tumours
Perou, C. M., Sørlie, T., Eisen, M. B., van de Rijn, M., Jeffrey, S. S., Rees, C. A., Pollack, J. R., Ross, D. T., Johnsen, H., Akslen, L. A., et al. (2000) · Nature · doi:10.1038/35021093 · Cited by 16,261
Nishimura, R., Osako, T., Nishiyama, Y., Tashima, R., Nakano, M., Fujisue, M., Toyozumi, Y., & Arima, N. (2013) · Oncology · doi:10.1159/000353099 · Cited by 13,166
MicroRNA expression profiles classify human cancers
Lu, J., Getz, G., Miska, E. A., Alvarez-Saavedra, E., Lamb, J., Peck, D., Sweet-Cordero, A., Ebert, B. L., Mak, R. H., Ferrando, A. A., et al. (2005) · Nature · doi:10.1038/nature03702 · Cited by 9,539
Calin, G. A., Dumitru, C. D., Shimizu, M., Bichi, R., Zupo, S., Noch, E., Aldler, H., Rattan, S., Keating, M., Rai, K., et al. (2002) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.242606799 · Cited by 5,111
Identification of Novel Genes Coding for Small Expressed RNAs
Lagos-Quintana, M., Rauhut, R., Lendeckel, W., & Tuschl, T. (2001) · Science · doi:10.1126/science.1064921 · Cited by 4,956
Elkablawy, M. A., Albasri, A. M., Mohammed, R. A., Hussainy, A. S., Nouh, M. M., & Alhujaily, A. S. (2016) · Saudi Medical Journal · doi:10.15537/smj.2016.2.12285 · Cited by 4,382
Complex networks orchestrate epithelial–mesenchymal transitions
Thiery, J. P., & Sleeman, J. P. (2006) · Nature Reviews Molecular Cell Biology · doi:10.1038/nrm1835 · Cited by 3,958
RAS Is Regulated by the let-7 MicroRNA Family
Johnson, S. M., Grosshans, H., Shingara, J., Byrom, M., Jarvis, R., Cheng, A., Labourier, E., Reinert, K. L., Brown, D., & Slack, F. J. (2005) · Cell · doi:10.1016/j.cell.2005.01.014 · Cited by 3,656
A microRNA polycistron as a potential human oncogene
He, L., Thomson, J. M., Hemann, M. T., Hernando-Monge, E., Mu, D., Goodson, S., Powers, S., Cordon-Cardo, C., Lowe, S. W., Hannon, G. J., et al. (2005) · Nature · doi:10.1038/nature03552 · Cited by 3,483
Unique microRNA molecular profiles in lung cancer diagnosis and prognosis
Yanaihara, N., Caplen, N., Bowman, E., Seike, M., Kumamoto, K., Yi, M., Stephens, R. M., Okamoto, A., Yokota, J., Tanaka, T., et al. (2006) · Cancer Cell · doi:10.1016/j.ccr.2006.01.025 · Cited by 3,023
Cited by
Park, S.-M., Gaur, A. B., Lengyel, E., & Peter, M. E. (2008) · Genes & Development · doi:10.1101/gad.1640608 · Cited by 2,272
Self-citationlet-7 Regulates Self Renewal and Tumorigenicity of Breast Cancer Cells
Yu, F., Yao, H., Zhu, P., Zhang, X., Pan, Q., Gong, C., Huang, Y., Hu, X., Su, F., Lieberman, J., et al. (2007) · Cell · doi:10.1016/j.cell.2007.10.054 · Cited by 1,910
Peltier, H. J., & Latham, G. J. (2008) · RNA · doi:10.1261/rna.939908 · Cited by 820
MicroRNAs Reprogram Normal Fibroblasts into Cancer-Associated Fibroblasts in Ovarian Cancer
Mitra, A. K., Zillhardt, M., Hua, Y., Tiwari, P., Murmann, A. E., Peter, M. E., & Lengyel, E. (2012) · Cancer Discovery · doi:10.1158/2159-8290.cd-12-0206 · Cited by 371
Self-citationColorectal liver metastasis: molecular mechanism and interventional therapy
Zhou, H., Liu, Z., Wang, Y., Wen, X., Amador, E. H., Yuan, L., Ran, X., Xiong, L., Ran, Y., Chen, W., et al. (2022) · Signal Transduction and Targeted Therapy · doi:10.1038/s41392-022-00922-2 · Cited by 298
Metadata
- Authors
- Shell, S., Park, S.-M., Radjabi, A. R., Schickel, R., Kistner, E. O., Jewell, D. A., Feig, C., Lengyel, E., & Peter, M. E.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2007-07-03
- Volume
- 104
- Issue
- 27
- Pages
- 11400-11405
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W1973816411
- Cited by
- 458
- References
- 31
- FWCI
- 13.18
- Type
- journal article
- Language
- en
- Open access
- bronze
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Let-7 expression defines two differentiation stages of cancer. https://app.cochat.ai/papers/10.1073/pnas.0704372104
- The paper
- Shell, S., Park, S.-M., Radjabi, A. R., Schickel, R., Kistner, E. O., Jewell, D. A., Feig, C., Lengyel, E., & Peter, M. E. (2007). Let-7 expression defines two differentiation stages of cancer. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0704372104
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
