• Issue

    Clinical and Translational Medicine: Volume 12, Issue 6

    June 2022

ISSUE INFORMATION

Open Access

Issue Information

  • First Published: 31 May 2022

COMMENTARY

RESEARCH ARTICLES

Open Access

TGF-β1 mediates pathologic changes of secondary lymphedema by promoting fibrosis and inflammation

  • First Published: 02 June 2022
TGF-β1 mediates pathologic changes of secondary lymphedema by promoting fibrosis and inflammation

  • TGF-β1 expression, fibroblast proliferation and ECM deposition are increased in lymphedematous skin.
  • Tissue lysate of lymphedematous skin induces fibroblast proliferation, ECM production and increases the stiffness of fibroblasts, LECs and LSMCs.
  • Inhibition of TGF-β1 decreases ECM deposition, immune cell infiltration and increases collateral lymphatics formation.
  • Topical treatment of pirfenidone is highly effective for lymphedema treatment.

Open Access

Uterus globulin associated protein 1 (UGRP1) binds podoplanin (PDPN) to promote a novel inflammation pathway during Streptococcus pneumoniae infection

  • First Published: 02 June 2022
Uterus globulin associated protein 1 (UGRP1) binds podoplanin (PDPN) to promote a novel inflammation pathway during Streptococcus pneumoniae infection

1. UGRP1–PDPN signalling activate RhoA to enhance the interaction of IKKγ and IKKβ.

2. Interaction of IKKγ and IKKβ activate NF-κB to enhance expression of TLR2, MyD88 and NOD2.

3. Upon S. pneumoniae infection, increased expression of TLR2, MyD88 and NOD2 could generate enhanced NF-κB signalling to produce more pro-inflammatory cytokines including IL-6, IL-1β and TNFα.

Open Access

EASY-APP: An artificial intelligence model and application for early and easy prediction of severity in acute pancreatitis

  • First Published: 02 June 2022
EASY-APP: An artificial intelligence model and application for early and easy prediction of severity in acute pancreatitis

  • The EASY prediction score is a practical tool for identifying patients at a greater risk for severe acute pancreatitis shortly after hospital admission.
  • The explanation of the impact of features on the prediction helps physicians understand the decision of the machine learning model.
  • The easy-to-use web application is available for clinicians and contributes to the improvement of the model.

Open Access

DNA methylation patterns reflect individual's lifestyle independent of obesity

  • First Published: 12 June 2022
DNA methylation patterns reflect individual's lifestyle independent of obesity

  • Long-term lifestyle habits including diet, physical activity, smoking and alcohol consumption jointly shape epigenetic patterns and affect methylation age.
  • These effects clearly dominate over those driven by age and obesity alone.
  • An interplay of lifestyle aspects needs to be considered when analysing epigenetic data with regard to complex metabolic diseases.

Open Access

Genome-wide CRISPR/Cas9 screening for therapeutic targets in NSCLC carrying wild-type TP53 and receptor tyrosine kinase genes

  • First Published: 12 June 2022
Genome-wide CRISPR/Cas9 screening for therapeutic targets in NSCLC carrying wild-type TP53 and receptor tyrosine kinase genes

  • Genome-wide CRISPRCas9 screening identified MDM2 as a potential target for wtT53-RTK NSCLC cells.
  • MDM2 inhibitor RG7388 selectively kill wtT53-RTK cells but is less effective against NSCLC cells carrying other genotypes.
  • RG7388 and pemetrexed worked synergistically in blocking proliferation and tumor growth of wtT53-RTK NSCLC.

Open Access

Nicotinamide-N-methyltransferase is a promising metabolic drug target for primary and metastatic clear cell renal cell carcinoma

  • First Published: 08 June 2022
Nicotinamide-N-methyltransferase is a promising metabolic drug target for primary and metastatic clear cell renal cell carcinoma

  1. NNMT is highly expressed in ccRCC primary tumours and metastases, correlating with worse patient survival.
  2. Glutamine metabolism is impaired in NNMT-depleted cells, with negative consequences for cellular fitness.
  3. NNMT inhibition reduces cell viability and induces cytotoxicity in 2D/3D ccRCC-derived tumour models.
  4. Beyond NNMT inhibition for the treatment of metabolic diseases, its application for anticancer therapy appears promising.

Open Access

TLR4 aggravates microglial pyroptosis by promoting DDX3X-mediated NLRP3 inflammasome activation via JAK2/STAT1 pathway after spinal cord injury

  • First Published: 12 June 2022
TLR4 aggravates microglial pyroptosis by promoting DDX3X-mediated NLRP3 inflammasome activation via JAK2/STAT1 pathway after spinal cord injury

  1. TLR4 and DDX3X are upregulated after SCI in mice.

  2. TLR4 deficiency alleviated DDX3X-dependent NLRP3 inflammasome activation and microglial pyroptosis after SCI in mice.

  3. TLR4 interacts with BGN and jointly promotes STAT1-dependent transcriptional activation of DDX3X by activating the JAK2/STAT1 pathway after SCI in mice.

Open Access

Combined treatment with anti-PSMA CAR NK-92 cell and anti-PD-L1 monoclonal antibody enhances the antitumour efficacy against castration-resistant prostate cancer

  • First Published: 13 June 2022
Combined treatment with anti-PSMA CAR NK-92 cell and anti-PD-L1 monoclonal antibody enhances the antitumour efficacy against castration-resistant prostate cancer

 

  • CAR NK-92 is activated through specific recognition of PSMA on prostate cancer cells.
  • Expression of PD-L1 on activated CAR NK-92 is upregulated via CAR-triggered PI3K/AKT/mTOR pathway.
  • Expression of PD-L1 on cancer cells is upregulated via IFN-γ-mediated JAK-STAT pathway.
  • Atezolizumab potentiates CAR NK-92 cytotoxicity by directly acting on PD-L1 on CAR NK-92 and unleashes CD8+ T cell via blocking PD-L1/PD-1 axis.

Open Access

Regulatory roles of external cholesterol in human airway epithelial mitochondrial function through STARD3 signalling

  • First Published: 09 June 2022
Regulatory roles of external cholesterol in human airway epithelial mitochondrial function through STARD3 signalling

  1. STARD3, upregulated in COPD, could help cholesterol transfer to mitochondria and lead to mitochondrial dysfunction.
  2. Exogenous cholesterol reversed the protective MFN2 upregulation in CSE stimulation and exacerbated the mitochondrial dysfunction.
  3. Mitochondrial dysfunction caused by MFN2 downregulation altered the lipid homeostasis related to the activation of mTOR.

Open Access

Single-cell RNA sequencing reveals the characteristics of cerebrospinal fluid tumour environment in breast cancer and lung cancer leptomeningeal metastases

  • First Published: 09 June 2022
Single-cell RNA sequencing reveals the characteristics of cerebrospinal fluid tumour environment in breast cancer and lung cancer leptomeningeal metastases

  • Integrated analysis of characteristics of CSF tumour environment of LM patients.
  • Five subtype-specific CSF-CTCs of breast cancer showed great heterogeneities on cell proliferation and cancer-testis antigens expression.
  • Gene regulatory networks (GRNs) highlighted transcription factor SREBF2 activated in the breast cancer CSF-CTCs

Open Access

ZNF677 suppresses renal cell carcinoma progression through N6-methyladenosine and transcriptional repression of CDKN3

  • First Published: 09 June 2022
ZNF677 suppresses renal cell carcinoma progression through N6-methyladenosine and transcriptional repression of CDKN3

  1. ZNF677 is frequently silenced via m6A modification in RCC.

  2. The m6A modified CDS of ZNF677 positively regulates its translation and stability via binding with YTHDF1 and IGF2BP2, respectively.

  3. ZNF677 exerted its tumor suppressor functions in RCC cells through transcriptional repression of CDKN3 via binding to its promoter.

Open Access

YTHDF2 promotes intrahepatic cholangiocarcinoma progression and desensitises cisplatin treatment by increasing CDKN1B mRNA degradation

  • First Published: 13 June 2022
YTHDF2 promotes intrahepatic cholangiocarcinoma progression and desensitises cisplatin treatment by increasing CDKN1B mRNA degradation

  • YTHDF2 is upregulated in ICC tissues, particularly in chemoresistant ICC tissues, and correlated with poor prognosis.
  • Overexpression of YTDHF2 promotes ICC cell proliferation, inhibits apoptosis and accelerates cell cycle.
  • Overexpression of YTHDF2 desensitised ICC cells to cisplatin treatment
  • YTHDF2 facilitates ICC progression and desensitised cisplatin treatment by downregulating CDKN1B expression in an m6a dependent manner.

Open Access

A multi-omics analysis for the prediction of neurocognitive disorders risk among the elderly in Macao

  • First Published: 13 June 2022
A multi-omics analysis for the prediction of neurocognitive disorders risk among the elderly in Macao

  • Multi-omics characteristics of Macao elderly susceptible to neurocognitive disorders (NCDs) were investigated.
  • Gut microbiota, faecal metabolites and urine exosomes were detected utilizing metagenomics, metabolomic and proteomic.
  • Disturbed glyoxylate and dicarboxylate metabolism (bacteria), vitamin digestion and absorption and tricarboxylic acid cycle can serve as predictors of NCDs risk.

Open Access

Three-dimensional genome structure shapes the recombination landscape of chromatin features during female germline stem cell development

  • First Published: 22 June 2022
Three-dimensional genome structure shapes the recombination landscape of chromatin features during female germline stem cell development

1. Hi-C analysis of meiotic chromatin architecture during FGSC development.

2. TADs were attenuated and then disappeared during FGSC development.

3. X chromosome shows unique chromatin architecture during FGSC development.

Open Access

Preclinical platforms to study therapeutic efficacy of human γδ T cells

  • First Published: 22 June 2022
Preclinical platforms to study therapeutic efficacy of human γδ T cells

The immunosuppressive TME of these 3D models contained of tumour cells, CAFs and immune cells accompanied by high expression of PD-L1, PD-L2 and reduced expression of MICA/B. The immune checkpoint inhibitors and epigenetic modifiers enhance the efficacy of γδ T cells against 3D models. These four 3D models provided valuable preclinical platforms to test γδ T cell functions for immunotherapy.

Open Access

Integrated microbiome, metabolome, and proteome analysis identifies a novel interplay among commensal bacteria, metabolites and candidate targets in non-small cell lung cancer

  • First Published: 23 June 2022
Integrated microbiome, metabolome, and proteome analysis identifies a novel interplay among commensal bacteria, metabolites and candidate targets in non-small cell lung cancer

  • Prevotella, Gemmiger, and Roseburia were significantly upregulated at the genus level in NSCLC patients.
  • Nervonic acid/all-trans-retinoic acid was negatively related to Prevotella.
  • CRP, LBP, and CD14 were identified as potential biomarkers for NSCLC.
  • Transplantation of faecal microbiota from patients with NSCLC or Prevotella copri-colonized recipient mice caused inflammation and immune dysregulation in Lewis lung cancer (LLC) cells-bearing C57BL/6 mice.
  • Nervonic acid/all-trans-retinoic acid improved the Prevotella copri-treated LLC cells-bearing C57BL/6 mice phenotype.

Open Access

Lipid metabolism–related lncRNA SLC25A21-AS1 promotes the progression of oesophageal squamous cell carcinoma by regulating the NPM1/c-Myc axis and SLC25A21 expression

  • First Published: 23 June 2022
Lipid metabolism–related lncRNA SLC25A21-AS1 promotes the progression of oesophageal squamous cell carcinoma by regulating the NPM1/c-Myc axis and SLC25A21 expression

  1. Identified a lipid metabolism related lncRNA SLC25A21-AS1 which can be downregulated by HFD/PA.
  2. LncRNA SLC25A21-AS1 promotes proliferation and migration of ESCC cells through the NPM1/c-Myc axis and elevation of SLC25A21 expression.
  3. LncRNA SLC25A21-AS1 is associated with overall survival and tumor grade.

Open Access

LncRNA LOC105378097 inhibits cardiac mitophagy in natural ageing mice

  • First Published: 27 June 2022
LncRNA LOC105378097 inhibits cardiac mitophagy in natural ageing mice

(1) The heart-enriched lncR-SMAL is robustly increased in its level in serum samples of human subjects over 60-year old relative to young controls, and in both nucleus and cytoplasm of senescent cardiomyocytes. (2) Artificial overexpression of lncR-SMAL induces cardiac senescence by inhibiting Parkin-mediated mitophagy. Knockdown of endogenous lncR-SMAL in cardiomyocytes partially abrogated cell senescence. (3) LncR-SMAL interacts with Parkin protein and promotes ubiquitin-proteasome degradation of Parkin in senescent cardiomyocytes.

Open Access

Phosphoproteome reveals molecular mechanisms of aberrant rhythm in neurotransmitter-mediated islet hormone secretion in diabetic mice

  • First Published: 27 June 2022
Phosphoproteome reveals molecular mechanisms of aberrant rhythm in neurotransmitter-mediated islet hormone secretion in diabetic mice

  1. Rapid regulation of neurotransmitters in islet is exerted by altering proteins phosphorylation rather than expression levels.
  2. Proteins phosphorylation modulated by kinases play an important role in neurotransmitters ACh and NE mediated islet hormones secretion.
  3. Impaired innervation and aberrant rhythm of insulin secretion were found in islet of diabetic mice, which could be ameliorated after intervention with key receptors and kinases.

Open Access

Direct targeted therapy for MLL-fusion-driven high-risk acute leukaemias

  • First Published: 22 June 2022
Direct targeted therapy for MLL-fusion-driven high-risk acute leukaemias

Direct inhibition of MLL-fusion proteins is a potential therapeutic strategy.

MLL-fusion depletion screen identified disulfiram for its ability to ablate MLL-fusion protein and block-associated leukaemic phenotype.

Disulfiram directly targets the CXXC domain that is essential for all MLL-fusion proteins.

Disulfiram prevents the binding to the target genes of the MLL-fusion resulting in rapid decrease in H3K27ac levels.

LETTER TO EDITOR