Concise Review: LIN28/let-7 Signaling, a Critical Double-Negative Feedback Loop During Pluripotency, Reprogramming, and Tumorigenicity

2017 ◽  
Vol 19 (5) ◽  
pp. 289-293 ◽  
Author(s):  
Maryam Farzaneh ◽  
Farnoosh Attari ◽  
Seyed Esmaeil Khoshnam
Keyword(s):  
Negative Feedback ◽  
Feedback Loop ◽  
Negative Feedback Loop ◽  
Double Negative ◽  
Concise Review

scholarly journals HIC1 and miR-23~27~24 clusters form a double-negative feedback loop in breast cancer

2016 ◽  
Vol 24 (3) ◽  
pp. 421-432 ◽  
Author(s):  
Yanbo Wang ◽  
Hongwei Liang ◽  
Geyu Zhou ◽  
Xiuting Hu ◽  
Zhengya Liu ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Negative Feedback ◽  
Feedback Loop ◽  
Negative Feedback Loop ◽  
Double Negative

scholarly journals Multistability and consequent phenotypic plasticity in AMPK-Akt double negative feedback loop in cancer cells

2020 ◽  
Author(s):  
Adithya Chedere ◽  
Kishore Hari ◽  
Saurav Kumar ◽  
Annapoorni Rangarajan ◽  
Mohit Kumar Jolly
Keyword(s):  
Breast Cancer ◽  
Phenotypic Plasticity ◽  
Cancer Cells ◽  
Cell Population ◽  
Negative Feedback ◽  
Feedback Loop ◽  
Phenotypic Switching ◽  
Negative Feedback Loop ◽  
Double Negative ◽  
Protein Levels

AbstractAdaptation and survival of cancer cells to various stress and growth factor conditions is crucial for successful metastasis. A double-negative feedback loop between two serine/threonine kinases AMPK and Akt can regulate the adaptation of breast cancer cells to matrix-deprivation stress. This feedback loop can generate majorly two phenotypes or cell states: matrix detachment-triggered pAMPKhigh/ pAktlow state, and matrix (re)attachment-triggered pAkthigh/ pAMPKlow state. However, whether these two cell states can exhibit phenotypic plasticity and heterogeneity in a given cell population, i.e., whether they can co-exist and undergo spontaneous switching to generate the other subpopulation, remains unclear. Here, we develop a mechanism-based mathematical model that captures the set of experimentally reported interactions among AMPK and Akt. Our simulations suggest that the AMPK-Akt feedback loop can give rise to two co-existing phenotypes (pAkthigh/ pAMPKlow and pAMPKhigh/pAktlow) in specific parameter regimes. Next, to test the model predictions, we segregated these two subpopulations in MDA-MB-231 cells and observed that each of them was capable of switching to another in adherent conditions. Finally, the predicted trends are supported by clinical data analysis of TCGA breast cancer and pan-cancer cohorts that revealed negatively correlated pAMPK and pAkt protein levels. Overall, our integrated computational-experimental approach unravels that AMPK-Akt feedback loop can generate multistability and drive phenotypic switching and heterogeneity in a cancer cell population.

scholarly journals MicroRNA-9 Modulates Hes1 Ultradian Oscillations by Forming a Double-Negative Feedback Loop

Cell Reports ◽  
2012 ◽  
Vol 2 (1) ◽  
pp. 10-18 ◽  
Author(s):  
Boyan Bonev ◽  
Peter Stanley ◽  
Nancy Papalopulu
Keyword(s):  
Negative Feedback ◽  
Feedback Loop ◽  
Negative Feedback Loop ◽  
Double Negative

MicroRNAs miR-199a-5p and -3p Target the Brm Subunit of SWI/SNF to Generate a Double-Negative Feedback Loop in a Variety of Human Cancers

2010 ◽  
Vol 71 (5) ◽  
pp. 1680-1689 ◽  
Author(s):  
Kouhei Sakurai ◽  
Chihiro Furukawa ◽  
Takeshi Haraguchi ◽  
Ken-ichi Inada ◽  
Kazuya Shiogama ◽  
...  
Keyword(s):  
Negative Feedback ◽  
Feedback Loop ◽  
Negative Feedback Loop ◽  
Double Negative ◽  
Human Cancers

A Double-Negative Feedback Loop between ZEB1-SIP1 and the microRNA-200 Family Regulates Epithelial-Mesenchymal Transition

2008 ◽  
Vol 68 (19) ◽  
pp. 7846-7854 ◽  
Author(s):  
Cameron P. Bracken ◽  
Philip A. Gregory ◽  
Natasha Kolesnikoff ◽  
Andrew G. Bert ◽  
Jun Wang ◽  
...  
Keyword(s):  
Negative Feedback ◽  
Feedback Loop ◽  
Epithelial Mesenchymal Transition ◽  
Negative Feedback Loop ◽  
Double Negative ◽  
Mesenchymal Transition
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