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Table 1 | HAL-mediated HIF signaling control and cancer progression

From: Signaling in and out: long-noncoding RNAs in tumor hypoxia

lncRNA

Status upon hypoxia

HIF involvement

Cancer Types

Clinical association

Functional Impact

Interactor

Target/Effect

Mechanistic Classification

Refs

aHIF

(HIF1A-AS2)

Not further induced in nonpapillary disease, but can be induced in lymphocytes

N.D.

(2 Putative HREs)

Renal carcinoma

• Up-regulated in non-papillary clear-cell renal carcinoma

N.D.

HIF1A mRNA

HIF1A mRNA stability

mRNA stability control

(Binding of HIF1A-AS2 to the HIF1A mRNA 3′-UTR could possibly expose AU-rich elements and thus increase the degradation of HIF1A mRNA)

[42, 43]

Up-regulated

N.D.

Human umbilical vein endothelial cells (HUVECs)

• Up-regulated in HUVECs in hypoxia

HUVECs viability ↑

Migration ability ↑

Tube formation ↑

miR-153-3p

The expression of HIF-1α

Sequestration of miRNAs

(Down-regulation of miR-153-3p-mediated repression of HIF-1α expression)

[44]

Up-regulated

N.D.

Bladder cancer

• Upregulated in bladder cancer after cisplatin treatment

Cisplatin resistance ↑

N.D.

Promoting HMGA1 expression

Transcriptional regulation

(HIF1A-AS2 promoting the expression of HMGA1, which physically interacts with p53, p63, and p73, and therefore inhibits their transcriptional activity on Bax)

[45]

Up-regulated

HIF-1α and/or HIF-2α dependent

(2 HREs identified)

Mesenchymal Glioblastoma

Stem-like Cells (M-GSCs)

• Upregulated in M-GSCs

Growth of M-GSCs ↑

Neurosphere-forming capacity of M-GSCs ↑

Glioblastoma tumor growth ↑

IGF2BP2 and DHX9

Maintenance of expression of HMGA1

Complex scaffold

(The direct interaction among HIF1A-AS2, IGF2BP2 and DHX9 is needed for HMGA1 expression)

[46, 47]

Up-regulated

N.D.

Epithelial ovarian cancer (EOC)

• Up-regulated in EOC

Cell apoptosis ↓

Cell proliferation ↑

Tumorigenesis ↑

Tumor growth ↑

N.D.

N.D.

Unclear mechanism

(May partially through the aHIF-mediated regulation of certain key mitochondrial apoptosis pathway-related genes, including Bcl-2, Bax, Caspase-7, and Caspase-9)

[48]

AGAP2-AS1

Up-regulated

N.D.

Hepatocellular carcinoma (HCC)

• Up-regulated in HCC

• Correlated with adverse clinical features and poor prognosis of HCC

Cell proliferation ↑

Migration and invasion ↑

EMT progression ↑

Apoptosis ↓

miR-16-5p

The expression of ANXA11

Sequestration of miRNAs

(Down-regulation of miR-16-5p-mediated repression of ANXA11)

[49]

ANRIL (CDKN2B-AS1)

Up-regulated

HIF-1α dependent

(1 HRE identified)

Osteosarcoma

• Up-regulated in osteosarcoma

Hypoxic viability ↑

Hypoxia-induced Invasion ↑

Hypoxia-induced apoptosis ↓

N.D.

N.D.

Unclear mechanism

(Possibly through epigenetic modification)

[50]

BC005927

Up-regulated

HIF-1α dependent

(2 HREs identified)

Gastric cancer (GC)

• Up-regulated in GC

• Correlated with higher tumor-node-metastasis stages and poorer prognoses

Metastasis ↑

N.D.

N.D.

Transcriptional regulation

(The neighboring gene, EPHB4, a metastasis-related gene, is regulated by BC005927)

[51]

BX111887 (ZEBTR)

Up-regulated

HIF-1α dependent

(1 HRE identified)

Pancreatic cancer (PC)

• Upregulated in PC

• Correlated with late TNM stage, lymphatic invasion and distant metastasis

Proliferation ↑

Migration ↑

Invasion ↑

YB1

ZEB1 promoter

Transcriptional regulation

(BX111 promotes ZEB1 transcription by recruiting YB1 to ZEB1 promoter)

[52]

CASC9

N.D.

N.D.

Nasopharyngeal carcinoma (NPC)

Up-regulated in NPC tissues

Glycolysis and tumorigenesis ↑

Cell growth ↑

HIF-1α

The stability of HIF-1α

Protein Stability

(CASC9 interacts with HIF-1α and enhances the stabilization of HIF-1α)

[53]

CF129

(lncRNA-CF129145.1)

Down-regulated

Downregulated by binding of HIF-1α/HDAC1 complex to CF129 promoter

Pancreatic cancer (PC)

• Down-regulated in PC

• Low CF129 expression predicted short overall survival

Invasion and metastasis ↓

p53 and E3 ligase MKRN1

FOXC2 transcription

Post-Translational modification

(CF129 directly binds to p53 and E3 ligase MKRN1, inducing p53 protein ubiquitination and degradation, and thereby suppressing FOXC2 transcription)

[54]

CPS1-IT1

Down-regulated

(treatment of hypoxia mimetic, CoCl2)

N.D.

Colorectal cancer

Down-regulated in colorectal cancer

EMT and autophagy ↓

N.D.

N.D.

Unclear mechanism

(May partially through suppressing expression levels of HIF-1α, LC3-I, LC3-II, Beclin-1 and EMT associated proteins under hypoxia)

[55]

CRPAT4

(RP11-225B17)

Down-regulated

HIF-1α dependent, HIF-2α independent

Clear cell renal cell

carcinoma (ccRCC)

• Up-regulated in ccRCC

• Associated with poor overall survival and progression-free survival

Cell migration ↑

Proliferation ↑

N.D.

N.D.

Unclear mechanism

(May partially through the CRPAT4-mediated regulation of migration-associated gene AVL9 expression)

[56]

DANCR

N.D.

N.D.

Nasopharyngeal carcinoma (NPC)

• Up-regulated in NPC

• Associated with poor prognosis

Metastasis ↑

Invasion ↑

NF90/NF45

complex

HIF-1α mRNA stability

mRNA stability control

(DANCR could increase HIF-1α mRNA stability through interacting with the NF90/NF45 complex)

[57]

DARS-AS1

Up-regulated

HIF-1α dependent, But HIF-2α independent (2 HREs identified)

Myeloma

• Up-regulated in myeloma

• Correlated with poor prognosis

Survival ↑

Tumorigenesis ↑

RBM39

RBM39 stability

Post-Translational modification

(The interaction between DARS-AS1 and RNA-binding protein 39 (RBM39) impedes the interaction between RBM39 and its E3 ubiquitin ligase RNF147, preventing RBM39 from degradation)

[58]

EIF3J-AS1 (EIF3J-DT)

Up-regulated

N.D.

Hepatocellular carcinoma (HCC)

• Up-regulated in HCC tissues

• Correlated with tumor size, vascular invasion, tumor stage and poor prognosis

Cell proliferation ↑

Migration ↑

Invasion ↑

miR-122-5p

The expression of CTNND2

Sequestration of miRNAs

(Down-regulation of miR-122-5p-mediated repression of CTNND2)

[59]

ENST00000480739 (RPL13AP23)

N.D.

N.D.

Pancreatic ductal adenocarcinoma

(PDAC)

• Down-regulated in PDAC

• Associated with tumor node metastasis (TNM) stage and lymph node metastasis

• Independent risk factor for PDAC survival following surgery

Invasion ↓

OS-9 mRNA & protein ↑

N.D.

Transcription of OS-9 (Negative regulation of HIF-1α)

Epigenetic and transcriptional regulation

(ENST00000480739 induces OS-9 expression at the transcriptional level, possibly through modifying the H3K27 acetylation level of OS9 gene promoter)

[60]

FALEC

Up-regulated

HIF-1α inducible

Prostate cancer (PCa)

• Up-regulated in PCa

• Independent prognostic factor

Cell proliferation ↑

Migration and invasion ↑

N.D.

N.D.

Unclear mechanism

(May partially through the FALEC-mediated regulation of p21 and its downstream components expression)

[61]

FAM201A

N.D.

N.D.

Non-small cell lung cancer

(NSCLC)

• Up-regulated in tissues obtained from NSCLC patients resistant to radiotherapy

Cell proliferation ↑

Apoptosis (under X-ray irradiation) ↓

miR-370

The expression of EGFR

Sequestration of miRNAs

(Down-regulation of miR-370-mediated repression of EGFR)

[62]

FEZF1-AS1

N.D.

N.D.

Pancreatic cancer

• Upregulated in pancreatic cancer

Cell proliferation ↑

Invasion ↑

miR-142 and miR-133a

The expression of HIF-1α and EGFR

Sequestration of miRNAs

(Down-regulation of miR-142- and miR-133a-mediated repression of HIF-1α and EGFR expression)

[63]

GAPLINC

Up-regulated

HIF-1α (2 HREs identified)

(2 HREs)

Gastric cancer

• Upregulated in GC

• High expression of GAPLINC correlates with poorer survival

• GAPLINC correlates with CD44 activation

Proliferation ↑

Apoptosis ↓

Invasion ↑

Migration ↑

miR-211-3p

The expression of CD44

Sequestration of miRNAs

(Down-regulation of miR-211-3p-mediated repression of CD44)

[64, 65]

H19

Up-regulated

N.D.

Breast cancer stem cells (BCSCs)

• H19 expression strongly correlates with PDK1 in primary breast carcinomas

Glycolysis ↑

BCSC maintenance ↑

let-7

The expression of HIF-1α

Sequestration of miRNAs

(Down-regulation of let-7-mediated repression of HIF-1α expression)

[66]

Up-regulated

N.D.

Multiple Myeloma (MM)

N.D.

The expression of the hypoxia induced genes ↑

Adhesion on stromal cells ↑

N.D.

N.D.

HIF-1α nuclear translocation

(H19 is required for HIF-1α nuclear translocation and the expression of the hypoxia-induced genes, such as CXCR4 and Snail)

[67]

Up-regulated

HIF-1α dependent

(3 HREs identified)

Glioblastoma (GBM)

• Up-regulated in GBM

• Correlated with poor prognosis

• The HIF-1α levels were positively correlated with H19 levels in GBM specimens

Migration and invasion ↑

Tumor growth ↑

EMT ↑

miR-181d

The expression of β-catenin

Sequestration of miRNAs

(Down-regulation of miR-181d-mediated repression of β-catenin expression)

[68,69,70,71]

Up-regulated

N.D.

Prostate Cancer

• Upregulated by estrogen or hypoxia

• Reduced upon combined treatment

Cell motility ↓

Invasion ↓

N.D.

Repression of beta3 and beta4 Integrins

Unclear mechanism

(Combined Estrogen and Hypoxia treatment could cause H19 down-regulation, followed by up-regulation of both β3 and β4 Integrins and E-cadherin)

[72]

Up-regulated

N.D.

Breast cancer, Non-small cell lung carcinoma (NSCLC)

• Up-regulated in NSCLC with chronic obstructive pulmonary disease (COPD)

• Up-regulated in all common metastatic sites tested

Migration and invasion ↑

Tumor growth ↑

EMT ↑

N.D.

Up-regulation of miR-675-5p

Unclear mechanism

(H19 could induce upregulation of miR-675-5p, whereas P53 is a target gene of miR-675-5p and P53 downstream target genes involved in EMT, survival and tumorigenesis are thereby repressed)

[73, 74]

HAS2-AS1

Up-regulated

HIF-1α dependent (1 HRE identified)

Oral squamous cell carcinoma (OSCC)

• Up-regulated in OSCC

EMT ↑

N.D.

N.D.

Unclear mechanism

(HAS2-AS1-mediated hypoxia-induced EMT is dependent on cell-adhesion molecule CD44 and RHAMM)

[75]

HIF2PUT

N.D.

N.D.

Osteosarcoma

• Expression of HIF2PUT is correlated with HIF2A mRNA

Cell proliferation and migration ↓

Expression of CSC marker CD133 ↓

Sphere-forming ability ↓

N.D.

Transcription of HIF2A

Transcriptional regulation

(HIF-2α was positively regulated by lncRNA HIF2PUT)

[76]

N.D,

N.D.

Osteosarcoma cancer stem cell

• Down-regulated in osteosarcoma cell lines

• A strong positive correlation between relative HIF2PUT and HIF-2α level in osteosarcoma cancer tissues

Proliferation ↓

Migration and invasion ↓

Sphere-formation ↓

N.D.

N.D.

Unclear mechanism

(May partly through HIF2PUT-mediated regulation of HIF-2 expression)

[77]

HINCUT-1 (uc.475)

Up-regulated

HIF-1α dependent

(3 HREs identified)

Colon and breast cancer cell lines

N.D.

Hypoxic cell proliferation ↑

N.D.

N.D.

Transcriptional regulation

(HINCUT-1 is required for the expression of OGT mRNA expression and global O-GlcNAcylation of proteins)

[78]

HOTAIR

N.D.

N.D.

Renal cell carcinoma

• Upregulated and correlated with tumor progression

RCC proliferation ↑

Migration and EMT ↑

Apoptosis ↓

miR-217

The expression of HIF-1α/AXL

Sequestration of miRNAs

(Down-regulation of miR-217-mediated repression of HIF-1α/AXL expression)

[79]

Up-regulated

HIF-1α dependent

(1 HRE identified)

Non-small cell lung carcinoma (NSCLC)

• High level of HOTAIR is associated with poor clinical outcome in multiple cancers

Cell proliferation under hypoxia ↑

Invasion & migration under hypoxia ↑

Apoptosis under hypoxia ↓

N.D.

N.D.

Unclear mechanism

(Possibly through HOTAOR-mediated epigenetic modification)

[80, 81]

HOTTIP

Up-regulated

HIF-1α dependent

Glioma

• Up-regulated in glioma

• Associated with metastasis and poor patient survival

EMT ↑

Invasion ↑

Migration ↑

miR-101

The expression of ZEB1

Sequestration of miRNAs

(Down-regulation of miR-101-mediated repression of ZEB1)

[82]

IDH1-AS1

N.D.

N.D.

(c-Myc-mediated repression)

Multiple cell lines (HeLa, HCT116, H1299, P493 and 293 T)

N.D.

Glycolysis ↓

IDH1

IDH1 dimerization

Protein Dimerization

(IDH1-AS1 interacts with IDH1 and promotes Its Homo-dimerization)

[83]

LINC01436

Up-regulated

N.D.

Non-small cell lung cancer

(NSCLC)

• Up-regulated in NSCLC

• Associated with poor overall survival

Cell growth ↑

Migration and invasion ↑

miR-30a-3p

The expression of EPAS1

Sequestration of miRNAs

(Down-regulation of miR-30a-3p-mediated repression of EPAS1)

[84]

lincRNA-p21 (TP53COR1)

Up-regulated

HIF-1α dependent & preference

(2 HREs identified)

Cervical, lung and breast cancer cell lines

N.D.

Hypoxic glycolysis ↑

Tumor growth ↑

HIF-1α and VHL

The disruption of the VHL-HIF-1α interaction

Protein-Protein Interaction Decoy

(Stabilization of HIF-1α by disrupting the VHL-HIF-1α Interaction)

[85]

Up-regulated

N.D.

Hepatoma, glioma

N.D.

Apoptosis ↓

Cell proliferation and motility ↑

Autophagy ↑

N.D.

N.D.

Unclear mechanism

(LincRNA-p21 could promote autophagy of hypoxic tumor cells by up-regulating HIF-1α protein levels and suppressing Akt/mTOR/P70S6K signaling pathways)

[86]

linc-ROR

Up-regulated

N.D.

Hepatocellular cancer

Up-regulated in malignant liver cancer cells

Cell viability during hypoxia ↑

Tumor growth ↑

miR-145

The expression of p70S6K1 (RPS6KB1)

Sequestration of miRNAs

(Down-regulation of miR145-mediated repression of p70S6K1 expression)

[87]

LINK-A

(LINC01139)

N.D.

N.D.

Triple-negative breast cancer

• Upregulated in TNBC

• High levels of LINK-A correlated with unfavorable recurrence-free survival for breast cancer patients

Glycolysis ↑

Tumor growth ↑

BRK and LRRK2 kinase

HIF-1α phosphorylation

Complex scaffold

(LINK-A facilitates the recruitment of BRK and LRRK2 kinase activation, thereby causing HIF-1α stabilization, HIF-1α/p300 interaction, and activation of HIF-1α transcriptional programs under normoxic conditions)

[88]

LncHIFCAR (MIR31HG)

Up-regulated

HIF-1α dependent

Oral cancer

• Up-regulated in oral cancer

• High levels of LncHIFCAR predicted worse overall survival and recurrence-free survival

Hypoxic glycolysis ↑

Tumor metastasis ↑

Invasion and migration ↑

Hypoxic cell proliferation ↑

Sphere-forming ability ↑

HIF-1α

Activation of HIF-1 signaling

Transcriptional regulation

(LncHIFCAR acts as HIF-1α coactivator)

[89]

lncRNA-AK058003

Up-regulated

N.D.

Gastric cancer

Up-regulated in GC

Invasion & migration ↑

Metastasis ↑

N.D.

N.D.

Epigenetic regulation

(AK058003 expression is positively correlated with SNCG expression and SNCG promoter demethylation)

[90]

lncRNA-EFNA3

Up-regulated

HIF-1α dependent

(1 HRE identified)

Breast cancer

A strong correlation between high EFNA3 expression and shorter metastasis-free survival in breast cancer patients

Cell extravasation ↑

Metastatic dissemination ↑

miR-210

The expression of EFNA3

Sequestration of miRNAs

(Down-regulation of miR-210-mediated repression of EFNA3)

[91]

lncRNA-HAL

(lnc-METTL16-2)

Up-regulated

HIF-1α dependent

(3 putative HREs found)

Breast cancer

Up-regulated in triple negative breast cancer

Migration ↑

Cancer stem cell phenotype ↑

Mammospheres ↑

Clonogenic growth ↑

Histones and hnRNPs.

N.D.

Unclear mechanism

(The binding of lncRNA-HAL to histones and hnRNPs may suggest a participation at the chromatin level and transcriptional regulation)

[92]

lncRNA-LET (NPTN-IT1)

Down-regulated

HIF-1α dependent

(Indirect: Histone deacetylation)

Lung squamous-cell cancer (LSCC), hepatocellular carcinoma (HCC) and colorectal cancer (CRC)

• Down-regulated in in LSCC, HCC and CRC

• Correlated with hypoxia, histone acetylation disorder and metastasis in HCC

Metastasis ↓

Invasion ↓

NF90 (RNA-binding protein)

HIF1A mRNA stability

mRNA stability control

(The association between lncRNA-LET and NF90 protein enhanced the degradation of NF90, thereby decreasing HIF1A mRNA)

[93]

lncRNA-SARCC

(lnc-P2RY1-1)

VHL-dependent

HIF-2α dependent

(1 HRE identified)

Renal cell carcinoma

Differentially regulated by hypoxia in a von Hippel-Lindau (VHL)-dependent manner in RCC clinical specimens

Hypoxic cell cycle progression (VHL-restored RCC cells) ↑

Hypoxic cell cycle progression (VHL-mutant RCC cells) ↓

AR (androgen receptor)

AR ubiquitination and degradation

Post-Translational modification

(lncRNA-SARCC could promote AR degradation via ubiquitin-mediated proteolysis to suppress AR/HIF-2α/C-MYC signals)

[94]

lncTCF7 (WSPAR)

Up-regulated

N.D.

Glioma

• Up-regulated in glioma

• Associated with WHO grade and tumor size

Cell migration ↑

Proliferation ↑

Tumorigenicity ↑

N.D.

N.D.

Unclear mechanism

(LncTCF7 could promote the migration and proliferation of glioma cell partially through activating the Wnt signalling pathway)

[95]

MALAT1

Up-regulated

HIF-2α dependent & preference

(1HRE)

Hepatocellular carcinoma

N.D.

Cell growth ↑

Glycolysis ↑

Migration & invasion ↑

Vasculature formation ↑

Metastasis ↑

N.D.

N.D.

Post-Translational modification

(MALAT1 decreases hydroxylation of HIF-1α/HIF-2α, possibly through disassociation of the VHL protein from HIF-1α/HIF-2α)

[96, 97]

Up-regulated

N.D.

Lung adenocarcinoma

N.D.

Proliferation ↑

Migration ↑

Invasion ↑

PTB-associated splicing factor (PSF)

GAGE6 promoter

Transcriptional regulation

(The physical interaction of MALAT1 and PSF released the binding of PSF to GAGE6 promoter)

[98, 99]

Up-regulated

N.D.

Hepatocellular carcinoma

N.D.

Proliferation ↑

Migration and invasion ↑

Apoptosis ↓

miR-200a

N.D.

Sequestration of miRNAs

(Down-regulation of miR-200a)

[100]

MEG3

Up-regulated

N.D.

Pheochromocytoma

N.D.

Hypoxia-induced PC12 cell injury ↑

Methylation proteins (DNMT3a, DNMT3b, and MBD1)

TIMP2 promoter methylation

Epigenetic regulation

(MEG3 recruited methylation proteins DNMT3a, DNMT3b, and MBD1 and accelerated TIMP2 promoter methylation, which in turn inhibited its expression)

[101]

MTA2TR

Up-regulated

HIF-1α dependent

(1 HRE identified)

Pancreatic cancer (PC)

Upregulated in PC tissues

Cell proliferation ↑

Invasion ↑

Activating transcription factor 3 (ATF3)

The expression of MTA2

(MTA2 stabilizes the HIF-1α via deacetylation)

Transcriptional regulation

(MTA2TR transcriptionally upregulates MTA2 expression by recruiting ATF3 to the promoter area of MTA2)

[102]

NEAT1

Up-regulated

HIF-2α dependent

Non-small cell lung cancer (NSCLC)

• Up-regulated in NSCLC

• Associated with TNM stage and metastasis

Cell proliferation ↑

Migration and invasion ↑

miR-101-3p

SOX9/Wnt/β-catenin signaling pathway

Sequestration of miRNAs

(Down-regulation of miR-101-3p-mediated repression of SOX9/Wnt/β-catenin signaling pathway)

[103]

Up-regulated

HIF-2α dependent & preference

Breast cancer

High expression of NEAT1 is associated with poor survival of breast cancer patients

Proliferation ↑

Apoptosis ↓

Clonogenic survival ↑

Paraspeckle formation ↑

N.D.

N.D.

Complex scaffold

(Induces paraspeckle formation, thereby enhancing cancer cell survival in hypoxia)

[12, 104,105,106]

NDRG-OT1

(lnc-NDRG1-1)

Up-regulated

N.D.

Breast cancer

• N.D.

N.D.

NDRG1

NDRG1 degradation

Post-Translational modification

(NDRG-OT1 could promote NDRG1 degradation via ubiquitin-mediated proteolysis)

[107]

NORAD

Up-regulated

N.D.

Pancreatic cancer (PC)

• Upregulated in PC

• Correlated with shorter overall survival

Migration ↑

Invasion ↑

EMT ↑

Metastasis ↑

miR-125a-3p

The expression of RhoA

Sequestration of miRNAs

(Down-regulation of miR-125a-3p-mediated repression of RhoA)

[108]

NUTF2P3-001

(NUTF2P3)

Up-regulated

HIF-1α dependent

(1 HRE identified)

Pancreatic cancer

• Upregulated in pancreatic cancer

• A positive correlation between NUTF2P3 and KRAS

• Associated with tumor stage and prognosis

Cell viability, proliferation ↑

Invasion ↑

KRAS expression ↑

Metastasis ↑

miR-3923

The expression of KRAS

Sequestration of miRNAs

(Down-regulation of miR-3923-mediated repression of KRAS)

[109]

PCGEM1

Up-regulated

N.D.

Gastric cancer (GC)

Up-regulated in GC

Invasion and metastasis ↑

N.D.

N.D.

Unclear mechanism

(Partially through regulating SNAI1, a key transcription factor of EMT)

[110]

PVT1

N.D.

N.D.

Nasopharyngeal carcinoma (NPC)

• Up-regulated in NPC

• Up-regulation is associated with a poor prognosis in NPC patients

NPC cell proliferation ↑

Colony formation ↑

In vivo tumorigenesis ↑

KAT2A (chromatin modification factor)

Transcription of NF90 (RNA-binding protein)

Epigenetic regulation

(PVT1 serves as a scaffold for KAT2A, which mediates H3K9 acetylation, recruiting the nuclear receptor binding protein TIF1β to activate NF90 transcription, thereby increasing HIF-1α mRNA stability)

[111]

N.D.

N.D.

Hepatocellular carcinoma (HCC)

Up-regulated in HCC tissues and cell lines

Cell proliferation ↑

Migration ↑

Invasion and iron uptake ↑

Apoptosis ↓

miR-150

The expression of HIG2 (Hypoxia-inducible protein 2)

Sequestration of miRNAs

(Down-regulation of miR-150-mediated repression of HIG2)

[112]

N.D.

N.D.

Gastric cancer

• Upregulated in GC tissues and cell lines

• High expression levels correlated with advanced tumor stage and lymph node metastasis

GC cell proliferation ↑

GC cell invasion ↑

miR-186

The expression of HIF-1α

Sequestration of miRNAs

(Down-regulation of miR-186-mediated repression of HIF-1α expression)

[113]

Up-regulated

N.D.

Non-small cell lung cancer (NSCLC)

• Up-regulated in HIF-1α high group compared with HIF-1α low group

• Negatively correlated with miR-199a-5p expression in NSCLC tissues

Cell proliferation ↑

miR-199a-5p

The expression of HIF-1α

Sequestration of miRNAs

(Down-regulation of miR-199a-5p-mediated repression of HIF-1α expression)

[114]

Up-regulated

treatment of hypoxia mimetic CoCl2)

N.D.

Cervical Cancer

• Up-regulated in Cervical cancer

• Correlates with poorer overall survival

Cell proliferation ↑

Migration and invasion ↑

Apoptosis ↓

Cisplatin resistance ↑

N.D.

N.D.

Unclear mechanism

(Possible involvement of the interaction with nucleolin)

[115]

RERT-lncRNA

(RAB4B-EGLN2)

N.D.

N.D.

Hepatocellular carcinoma

(HCC)

The expression levels of RERT-lncRNA and EGLN2 were significantly correlated in HCC

EGLN2 expression ↑

N.D.

N.D.

Transcriptional regulation

(RERT-lncRNA induces EGLN2/PHD1 expression at the transcriptional level)

[116]

UBE2CP3

N.D.

N.D.

Hepatocellular carcinoma (HCC)

• Up-regulated in HCC, especially in high EV (endothelial vessel) density tissues

• UBE2CP3 expression combined with EV density is associated with HCC patient prognosis

Proliferation ↑

Migration ↑

Tube formation ↑

N.D.

N.D.

Unclear mechanism

(May partially through UBE2CP3-induced increase in the secretion of VEGFA into the supernatant via activation of the ERK/HIF-1α signaling pathway)

[117]

UCA1

Up-regulated

HIF-1α-dependent

Estrogen receptor (ER)-positive breast cancer

N.D.

Tamoxifen resistance ↑

miR-18a

The expression of HIF-1α

Sequestration of miRNAs

(Down-regulation of miR-18a-mediated repression of HIF-1α expression)

[118]

Up-regulated

N.D.

Hypoxia-resistant gastric cancer (HRGC)

Upregulated in HRGC cells

Migration ↑

miR-7-5p

The expression of EGFR

Sequestration of miRNAs

(Down-regulation of miR-7-5p-mediated repression of EGFR)

[119]

Up-regulated

N.D.

Acute myeloid leukemia (AML)

Upregulated following ADR (adriamycin)-based chemotherapy

Cytotoxic effect of ADR ↓

HIF-1α-dependent glycolysis ↑

miR-125a

The expression of HK2

Sequestration of miRNAs

(Down-regulation of miR-125a-mediated repression of HK2)

[120]

Up-regulated

HIF-1α dependent

(2 HREs)

Bladder cancer

• Upregulated in bladder cancer

• UCA1 expression associated with the clinical stage and histologic grade of bladder cancer

Cell proliferation under hypoxia ↑

Invasion & migration under hypoxia ↑

Apoptosis under hypoxia ↓

N.D.

N.D.

Unclear mechanism

(UCA1 could modulate the expression of several genes involved in tumorigenic potential, drug resistance and embryonic development)

[121, 122]

Up-regulated

HIF-1α dependent

(1 HRE identified)

Osteosarcoma

N.D.

Cell growth ↑

N.D.

N.D.

Unclear mechanism

(May partially through inactivating the PTEN/AKT signaling pathway)

[123]

WT1-AS

Up-regulated

HIF-1 dependent

(DNA demethylation of the CpG island)

Myeloid Leukemia

• Upregulated in Wilms’ tumors

• Aberrant WT1-AS splicing often found in acute myeloid leukemia

N.D.

N.D.

N.D.

Epigenetic regulation

(WT1-AS mediates hypoxia-induced WT-1 mRNA upregulation through modulating histone methylation)

[124, 125]

ZEB2-AS1

Up-regulated

HIF-1α dependent

Gastric cancer

(GC)

• Upregulated in GC

• Correlated with poor differentiation, lymph node metastasis and distant metastasis

Cell proliferation and growth ↑

Invasion ↑

In vivo tumor growth ↑

miR-143-5p

The expression of HIF-1α

Sequestration of miRNAs

(Down-regulation of miR-143-5p-mediated repression of HIF-1α expression)

[126]

  1. Abbreviation: CRC colorectal cancer, CSC cancer stem cell, EMT epithelial–mesenchymal transition, GC Gastric cancer, HCC hepatocellular cancer, HRE hypoxia response element, HUVECs human umbilical vein endothelial cells, ICC Immunocytochemistry, LC lung cancer, M-GSCs Mesenchymal glioblastoma multiforme stem-like cells, N.D. Not determined, NSCLC non-small cell lung carcinoma, OSCC Oral squamous cell carcinoma, PDAC pancreatic ductal adenocarcinoma, RCC Renal Cell Carcinoma, RNP ribonucleic protein, TNM tumor, node, metastasis, VHL von Hippel-Lindau protein, WHO World Health Organization