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Transcriptómica unicelular que revela el microambiente del tumor fibroepitelial de mama
Tianrun Shu1, Jing Wang2, Fuying Yang1
1Department of Breast Surgery, Caner Hospital of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University, Kunming, China.
Biochemistry and biophysics reports
|January 26, 2026
Resumen
Los tumores fibroepiteliales gigantes juveniles crecen rápidamente debido a la proliferación independiente de hormonas y a células inmunitarias únicas. La comprensión de estos impulsores moleculares puede conducir a tratamientos menos invasivos para pacientes jóvenes.
Área de la Ciencia:
- Oncología; Genómica; Biología Celular
Sus antecedentes:
- Los tumores fibroepiteliales gigantes (FE) son neoplasias mamarias raras que afectan principalmente a niñas adolescentes.; Su patogénesis sigue siendo poco comprendida y el tratamiento quirúrgico puede afectar el desarrollo mamario.; Se empleó la secuenciación de ARN unicelular para investigar los fundamentos biológicos de estos tumores.
Objetivo del estudio:
- Elucidar la base molecular de los tumores fibroepiteliales gigantes juveniles.; Comparar las características celulares y moleculares de las lesiones fibroepiteliales juveniles y adultas.; Identificar posibles dianas terapéuticas para los FE juveniles.
Principales métodos:
- Se realizó secuenciación de ARN unicelular en 15.295 células de tres casos juveniles (edades 12-16) y 11.442 células de un caso adulto.; Se utilizó la plataforma BD Rhapsody™ para el perfilado celular.; Se utilizó inmunohistoquímica para validar los marcadores de fibroblastos.
Principales resultados:
- Las células epiteliales de los FE juveniles mostraron enriquecimiento en vías de proliferación (PI3K-Akt, señalización GnRH), a diferencia de las lesiones adultas dominadas por vías del receptor de estrógeno.; Se identificó una población distinta de fibroblastos presentadores de antígenos específicos de juveniles (18,7% de las células estromales) que expresan HLA-DRA y CD74.; Se observaron redes de comunicación intercelular mejoradas, incluidas las interacciones PTN-SDC4 y MDK-NCL, en lesiones juveniles, lo que sugiere un papel en la progresión tumoral.
Conclusiones:
- El rápido crecimiento de los FE gigantes juveniles está relacionado con programas proliferativos independientes de hormonas.; Subtipos únicos de fibroblastos inmunomoduladores contribuyen a la biología tumoral.; Estos hallazgos ofrecen información para el desarrollo de tratamientos dirigidos y menos invasivos para pacientes jóvenes.
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