Id |
Subject |
Object |
Predicate |
Lexical cue |
T1 |
0-107 |
Sentence |
denotes |
Identification of a gain-of-function mutation of the prolactin receptor in women with benign breast tumors. |
T2 |
108-211 |
Sentence |
denotes |
There is currently no known genetic disease linked to prolactin (Prl) or its receptor (PrlR) in humans. |
T3 |
212-422 |
Sentence |
denotes |
Given the essential role of this hormonal system in breast physiology, we reasoned that genetic anomalies of Prl/PrlR genes may be related to the occurrence of breast diseases with high proliferative potential. |
T4 |
423-609 |
Sentence |
denotes |
Multiple fibroadenomas (MFA) are benign breast tumors which appear most frequently in young women, including at puberty, when Prl has well-recognized proliferative actions on the breast. |
T5 |
610-862 |
Sentence |
denotes |
In a prospective study involving 74 MFA patients and 170 control subjects, we identified four patients harboring a heterozygous single nucleotide polymorphism in exon 6 of the PrlR gene, encoding Ile(146)-->Leu substitution in its extracellular domain. |
T6 |
863-1323 |
Sentence |
denotes |
This sole substitution was sufficient to confer constitutive activity to the receptor variant (PrlR(I146L)), as assessed in three reconstituted cell models (Ba/F3, HEK293 and MCF-7 cells) by Prl-independent (i) PrlR tyrosine phosphorylation, (ii) activation of signal transducer and activator of transcription 5 (STAT5) signaling, (iii) transcriptional activity toward a Prl-responsive reporter gene, and (iv) cell proliferation and protection from cell death. |
T7 |
1324-1440 |
Sentence |
denotes |
Constitutive activity of PrlR(I146L) in the breast sample from a patient was supported by increased STAT5 signaling. |
T8 |
1441-1539 |
Sentence |
denotes |
This is a unique description of a functional mutation of the PrlR associated with a human disease. |
T9 |
1540-1753 |
Sentence |
denotes |
Hallmarks of constitutive activity were all reversed by a specific PrlR antagonist, which opens potential therapeutic approaches for MFA, or any other disease that could be associated with this mutation in future. |