SPOP Inhibition of Endometrial Carcinoma and Its Clinicopathological Relationship

Retracted: SPOP Inhibition of Endometrial Carcinoma and Its Clinicopathological Relationship

[This retracts the article DOI: 10.1155/2022/5721630.].

SPOP regulates the expression profiles and alternative splicing events in human hepatocytes

Speckle type BTB/POZ protein (SPOP) may have cancer promoting or inhibiting effects. At present, the role of SPOP in hepatocellular carcinoma (HCC) has rarely been studied. In this study, to investigate the effects of SPOP in HCC and elucidate the underlying molecular mechanisms of its relationship with genes, differentially expressed genes (DEGs) were classified through RNA sequencing. The gene ontology analysis and Kyoto Encyclopedia of Genes and Genomes functional pathway analysis were used to further predict the function of DEGs after the overexpression of SPOP. The biological function of SPOP-regulated alternative splicing events in cells is comprehensively assessed. The Cancer Genome Atlas database and Gene Expression Omnibus dataset were performed to evaluate the correlation between SPOP and HCC progression. Due to SPOP overexpression, 56 DEGs in the HCC related pathway were further identified. The results showed that SPOP overexpression facilitated the cell proliferation and changed the gene expression profiles of human normal hepatocytes. SPOP-regulated alternative splicing events were involved in pathways associated with cellular processes, metabolism, environmental information procession, organismal systems, and so on. In conclusion, SPOP may potentially exhibit tumor-promoting effects, necessitating further investigations to unveil its molecular mechanisms comprehensively.

Nabais Sa-de Vries syndrome in a Chinese infant associated with a novel SPOP mutation: A clinical study and genetic report

BACKGROUND

Nabais Sa-de Vries syndrome (NSDVS) is a newly identified neurodevelopmental disorder (NDD), characterized by mutations in the SPOP gene, which encodes the speckle-type BTB/POZ protein. It is divided into two disease subtypes, according to patient facial features, which could be related to altered SPOP protein function. Few studies have documented this syndrome and little is known about its pathophysiology. Herein, we present an unexplained infant case of NDD, possibly the first Asian NSDVS case report.

METHODS

A 7-month-old boy presented with an enlarged head circumference, widened eye distance, and a protruding nose. Trio-whole exome sequencing of the patient's family was performed, and a variant was identified by bioinformatics analysis and further verified by Sanger sequencing. This variant was then identified by molecular dynamics analysis. Finally, a plasmid was constructed in vitro to transfect the human 293 T cells. qPCR and western blotting (WB) experiments were subsequently performed. These analyses verified the variant's transcription and protein expression.

RESULTS

Trio-whole exome sequencing was used to identify the SPOP mutation c.67 T > C (p.Cys23Arg). Crystal structure simulations suggest that this single-residue substitution alters hydrogen bonding with nearby residues. Analysis via qPCR and WB experiments indicated decreased mutant mRNA and protein expression levels.

CONCLUSION

Our findings suggest that genetic testing should be performed as soon as possible for children with NDD showing low phenotypic specificity. Prompt testing will provide more accurate diagnoses, which in turn offers evidence to assist in the formulation of rehabilitation training plans, and genetic counseling for patients' families.