Objective:The luminal androgen receptor(LAR)subtype of triple-negative breast cancer(TNBC)differentiation displays low proliferation yet strong metastatic potential and a poor chemotherapy response.This study aimed to...Objective:The luminal androgen receptor(LAR)subtype of triple-negative breast cancer(TNBC)differentiation displays low proliferation yet strong metastatic potential and a poor chemotherapy response.This study aimed to define the molecular basis of the LAR subtype and identify actionable therapeutic targets.Methods:Comprehensive multi-omic analyses were performed on the FUSCC-TNBC cohort,integrating whole-exome sequencing,RNA sequencing,and functional validation in vitro and in vivo.Somatic mutation profiling,gene set enrichment analysis(GSEA),and weighted gene co-expression network analysis(WGCNA)were used to define genomic and transcriptomic signatures.A machine learning model using the Mime1 package was applied to derive a senescence-associated prognostic signature(LAR-S)and validation in external cohorts.Immune deconvolution was performed to decipher the tumor microenvironment.Functional assays,patient-derived organoids(PDOs),and TS/V mouse models were used to evaluate therapeutic responses to senescence-modulating agent and immunotherapy combinations.Results:The LAR subtype was enriched for PIK3CA,PTEN,and ERBB2 kinase domain mutations.Functional studies confirmed ERBB2 variants(e.g.,V777L and E698_P699delinsA)as oncogenic drivers conferring sensitivity to neratinib.Transcriptomic analyses revealed a dominant cellular senescence program associated with immune suppression.The LAR-S signature stratified survival across cohorts and predicted immunotherapy resistance.Targeting cellular senescence inhibited LAR subtype organoid growth and when combined with anti-PD-1 therapy synergistically suppressed tumor growth in vivo.Conclusions:The LAR subtype harbors two therapeutic vulnerabilities:ERBB2 mutation-driven kinase activation;and senescencemediated immune evasion.The LAR-S signature enables precise patient stratification and supports senescence-targeted and immunotherapy combination strategies as promising approaches for this refractory TNBC subtype.展开更多
We perfected the narrow spectral band fundus photographic system using interference filters at the wavelengths of 417, 478, 500, 530, 547, 570, 589, 607, 628 and 648nm. Tests about the light penetration of filters and...We perfected the narrow spectral band fundus photographic system using interference filters at the wavelengths of 417, 478, 500, 530, 547, 570, 589, 607, 628 and 648nm. Tests about the light penetration of filters and exposure of various brand films were made on this system. Studies of the contrast of fundal tissues and structures under the different narrow spectral band light were made on 43 Chinese fellow eyes. The results indicates that the interference filters of 570 nm have the highest light penetr...展开更多
基金funding from the Ministry of Science and Technology of China(Grant Nos.2023YFF1205003,2023YFF0613304,and 2023YFC3402504)the National Key R&D Program of China(Grant No.2023YFF0613300,2023YFF1205003)the National Natural Science Foundation of China(Grant Nos.82473499,82272957,and 82303735).
文摘Objective:The luminal androgen receptor(LAR)subtype of triple-negative breast cancer(TNBC)differentiation displays low proliferation yet strong metastatic potential and a poor chemotherapy response.This study aimed to define the molecular basis of the LAR subtype and identify actionable therapeutic targets.Methods:Comprehensive multi-omic analyses were performed on the FUSCC-TNBC cohort,integrating whole-exome sequencing,RNA sequencing,and functional validation in vitro and in vivo.Somatic mutation profiling,gene set enrichment analysis(GSEA),and weighted gene co-expression network analysis(WGCNA)were used to define genomic and transcriptomic signatures.A machine learning model using the Mime1 package was applied to derive a senescence-associated prognostic signature(LAR-S)and validation in external cohorts.Immune deconvolution was performed to decipher the tumor microenvironment.Functional assays,patient-derived organoids(PDOs),and TS/V mouse models were used to evaluate therapeutic responses to senescence-modulating agent and immunotherapy combinations.Results:The LAR subtype was enriched for PIK3CA,PTEN,and ERBB2 kinase domain mutations.Functional studies confirmed ERBB2 variants(e.g.,V777L and E698_P699delinsA)as oncogenic drivers conferring sensitivity to neratinib.Transcriptomic analyses revealed a dominant cellular senescence program associated with immune suppression.The LAR-S signature stratified survival across cohorts and predicted immunotherapy resistance.Targeting cellular senescence inhibited LAR subtype organoid growth and when combined with anti-PD-1 therapy synergistically suppressed tumor growth in vivo.Conclusions:The LAR subtype harbors two therapeutic vulnerabilities:ERBB2 mutation-driven kinase activation;and senescencemediated immune evasion.The LAR-S signature enables precise patient stratification and supports senescence-targeted and immunotherapy combination strategies as promising approaches for this refractory TNBC subtype.
文摘We perfected the narrow spectral band fundus photographic system using interference filters at the wavelengths of 417, 478, 500, 530, 547, 570, 589, 607, 628 and 648nm. Tests about the light penetration of filters and exposure of various brand films were made on this system. Studies of the contrast of fundal tissues and structures under the different narrow spectral band light were made on 43 Chinese fellow eyes. The results indicates that the interference filters of 570 nm have the highest light penetr...
