LINC00943 regulates miR-1252-5p/YWHAH axis to promote tumor proliferation and metastasis in lung adenocarcinoma

Non-coding RNAs and exosomal non-coding RNAs in lung cancer: insights into their functions

Lung cancer is the second most common form of cancer worldwide Research points to the pivotal role of non-coding RNAs (ncRNAs) in controlling and managing the pathology by controlling essential pathways. ncRNAs have all been identified as being either up- or downregulated among individuals suffering from lung cancer thus hinting that they may play a role in either promoting or suppressing the spread of the disease. Several ncRNAs could be effective non-invasive biomarkers to diagnose or even serve as effective treatment options for those with lung cancer, and several molecules have emerged as potential targets of interest. Given that ncRNAs are contained in exosomes and are implicated in the development and progression of the malady. Herein, we have summarized the role of ncRNAs in lung cancer. Moreover, we highlight the role of exosomal ncRNAs in lung cancer.

Unveiling YWHAH: A potential therapeutic target for overcoming CD8+ T cell exhaustion in colorectal cancer

Colorectal cancer (CRC) is a significant global health challenge, with increasing rates of incidence and mortality. Despite advancements in immunotherapy, resistance, particularly due to T cell exhaustion, remains a major hurdle. This study explores the role of YWHAH, mediated by N4-acetylcytidine (ac4C) modification, in CRC progression and its impact on CD8+ T cell exhaustion. Analysis of five paired CRC patient tissue samples using acetylated RNA immunoprecipitation and sequencing (acRIP-seq)identified ac4C-modified mRNAs. Functional assays, including cell culture, transfection, qRT-PCR, and immune assays, investigated the influence of YWHAH expression on CRC advancement. Bioinformatics analysis of TCGA data assessed the correlation between YWHAH and immune responses, as well as checkpoint inhibitors. Flow cytometry and Immunohistochemistry validated these findings, complemented by a co-culture experiment involving CD8+ T cells and CRC cell lines (LOVO and HCT116). acRIP-seq revealed YWHAH as a potential driver of CRC progression, exhibiting ac4C modification-mediated stability and upregulation. High YWHAH levels correlated with adverse outcomes and immune evasion in CRC patients, showing strong associations with immune checkpoint proteins and modest correlations with CD8+ T cell infiltration. Co-culture experiments demonstrated YWHAH-induced CD8+ T cell exhaustion, characterized by decreased proliferation and increased exhaustion markers. NAT10-mediated ac4C modification enhanced YWHAH stability in CRC. The involvement of YWHAH in CD8 + T cell exhaustion suggests its potential as a therapeutic target and prognostic marker in CRC immunotherapy, highlighting the intricate interplay between epitranscriptomic modifications, the tumor microenvironment, and immune responses in CRC progression.

The regulatory effect of lncRNA LINC00943 on the progression of hepatocellular carcinoma and its relationship with clinicopathological features

BACKGROUND

The risk factors for the pathogenesis of HCC are highly variable, and the prognosis of patients is very unsatisfactory. In this study, we investigated the regulatory effect of LINC00943 on HCC progression and its relationship with clinicopathological features.

METHODS

LINC00943 level in HCC tissues and cell specimens was verified by RT-qPCR. The pathologic significance of LINC00943 in the prognosis of HCC was analyzed by Kaplan-Meier and Cox regression analyses. The behavioral function of LINC00943 in HCC cells was evaluated via CCK-8 and Transwell assays. The specific targeting relationship between LINC00943 and miR-195-5p was investigated by luciferase activity assay.

RESULTS

LINC00943 was highly expressed in HCC tissues and cell specimens. Clinical data analysis showed that elevated LINC00943 indicated poor prognosis in patients with HCC and was related to TNM stage and lymph node metastasis. Cell experiments demonstrated that silencing LINC00943 sponge miR-195-5p suppressed the proliferation, migration and invasion of HCC cells. Mechanistically, miR-195-5p inhibitor remedied the suppressive effect of silencing LINC00943 on the biological functions of HCC cells.

CONCLUSION

LINC00943 may be an independent prognostic factor of HCC, which provides new thinking for the prognosis and treatment of HCC patients.