Characterization of TRKA Signaling in Acute Myeloid Leukemia
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Tropomyosin-related kinase A (TRKA) translocations have oncogenic potential and have been found in rare cases of solid tumors. Accumulating evidence indicates that TRKA and its ligand, nerve growth factor (NGF), may play a role in normal hematopoiesis and may be deregulated in leukemogenesis. Here, we report a comprehensive evaluation of TRKA signaling in normal and leukemic cells. TRKA expression is highest in common myeloid progenitors and is overexpressed in core binding factor and megakaryocytic leukemias, especially Down syndrome-related AML. Importantly, NGF can rescue GM-CSF dependent TF-1 AML cells, but does not drive proliferation in other TRKA-expressing lines. Although TRKA expression is heterogeneous between and within AML samples, NGF stimulation broadly induces ERK signaling, demonstrating the functional ability of AML cells to respond to NGF/TRKA signaling. However, neither shRNA knockdown nor pharmacologic inhibition have significant anti-proliferative effects on human AML cells and . Thus, despite functional NGF/TRKA signaling, the importance of TRKA in AML remains unclear.
Yao C, Lin C, Wang Y, Kao C, Tsai C, Hou H Blood Adv. 2024; 8(10):2442-2454.
PMID: 38527292 PMC: 11112608. DOI: 10.1182/bloodadvances.2023011512.
Nerve Growth Factor and the Role of Inflammation in Tumor Development.
Ferraguti G, Terracina S, Tarani L, Fanfarillo F, Allushi S, Caronti B Curr Issues Mol Biol. 2024; 46(2):965-989.
PMID: 38392180 PMC: 10888178. DOI: 10.3390/cimb46020062.
Vadeikiene R, Jakstys B, Ugenskiene R, Satkauskas S, Juozaityte E Biomedicines. 2022; 10(11).
PMID: 36359207 PMC: 9687892. DOI: 10.3390/biomedicines10112687.
Discovery and characterization of targetable NTRK point mutations in hematologic neoplasms.
Joshi S, Qian K, Bisson W, Watanabe-Smith K, Huang A, Bottomly D Blood. 2020; 135(24):2159-2170.
PMID: 32315394 PMC: 7290093. DOI: 10.1182/blood.2019003691.
Lebedev T, Vagapova E, Popenko V, Leonova O, Spirin P, Prassolov V Front Oncol. 2019; 9:1046.
PMID: 31681584 PMC: 6813278. DOI: 10.3389/fonc.2019.01046.