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SEMA6A
is a multifunctional transmembrane semaphorin protein that participates in various cellular processes, including axon guidance, cell migration, and cancer progression. However, the role of
SEMA6A
in clear cell renal cell carcinoma (ccRCC) is unclear. Based on high-throughput sequencing data, here we report that
SEMA6A
is a novel target gene of the
VHL
-
HIF
-
2α
axis and overexpressed in ccRCC. Chromatin immunoprecipitation and reporter assays revealed that
HIF-2α
directly activated
SEMA6A
transcription in hypoxic ccRCC cells.
Wnt
/β-catenin pathway activation is correlated with the expression of
SEMA6A
in ccRCC; the latter physically interacted with
SEC62
and promoted ccRCC progression through
SEC62
-dependent β-catenin stabilization and activation. Depletion of
SEMA6A
impaired
HIF-2α
-induced
Wnt
/β-catenin pathway activation and led to defective ccRCC cell proliferation both in vitro and in vivo.
SEMA6A
overexpression promoted the malignant phenotypes of ccRCC, which was reversed by
SEC62
depletion. Collectively, this study revealed a potential role for
VHL
-
HIF-2α
-
SEMA6A
-
SEC62
axis in the activation of
Wnt
/β-catenin pathway. Thus,
SEMA6A
may act as a potential therapeutic target, especially in
VHL
-deficient ccRCC.