• Issue

    MedComm: Volume 4, Issue 2

    April 2023

ISSUE INFORMATION

Open Access

Issue Information

  • First Published: 14 February 2023

ORIGINAL ARTICLES

Open Access

The combined effect of metformin and mirabegron on diet-induced obesity

  • First Published: 14 February 2023
The combined effect of metformin and mirabegron on diet-induced obesity

The combined metformin/mirabegron treatment not only prevents the development of diet-induced obesity but also promotes weight loss in established diet-induced obesity. Furthermore, metformin/mirabegron treatment induces a greater reduction in body weight than either treatment when used alone. Mechanistically, these benefits on weight loss were mainly achieved by activating brown adipose tissue thermogenesis and promoting subcutaneous white adipose tissue browning, leading to enhanced energy expenditure.

Open Access

Osthole regulates N6-methyladenosine-modified TGM2 to inhibit the progression of rheumatoid arthritis and associated interstitial lung disease

  • First Published: 22 February 2023
Osthole regulates N6-methyladenosine-modified TGM2 to inhibit the progression of rheumatoid arthritis and associated interstitial lung disease

Osthole (OS) suppressed the positive feedback circuit transglutaminase 2 (TGM2)/Myc/WTAP-facilitated NF-κB signaling to attenuate the pathological phenotype of RA-fibroblast-like synoviocytes as well as impair the proliferation and polarization of CD11b+ M2 macrophages in the control of RA and RA-interstitial lung disease (ILD) progression. OS might serve as an effective anti-RA and anti-RA ILD drug without toxicity, and TGM2 might be applied as a target for RA treatments.

Open Access

Protopanaxadiol manipulates gut microbiota to promote bone marrow hematopoiesis and enhance immunity in cyclophosphamide-induced immunosuppression mice

  • First Published: 23 February 2023
Protopanaxadiol manipulates gut microbiota to promote bone marrow hematopoiesis and enhance immunity in cyclophosphamide-induced immunosuppression mice

CTX treatment leads to immunosuppression and gut microbiota dysbiosis in mice. PPD treatment can protect against CTX-induced gut microbiota dysbiosis by increasing the abundance of beneficial bacteria and inhibiting the proliferation of pathogenic bacteria. The beneficial bacteria metabolize to produce immune-enhancing metabolites and anti-inflammatory metabolites, which contribute to the immune-enhancing and anti-inflammatory functions of PPD-M in CTX-induced immunosuppressed mice, including promoting bone marrow hematopoiesis to increase the number of peripheral blood white blood cells, proliferating splenic lymphocytes, and eliminating inflammation.

Open Access

Predicting risk on cardiovascular or cerebrovascular disease based on a physical activity cohort: Results from APAC study

  • First Published: 10 March 2023
Predicting risk on cardiovascular or cerebrovascular disease based on a physical activity cohort: Results from APAC study

This study used the participants from the Asymptomatic Polyvascular Abnormalities in Community (APAC) to develop a new sex-specific prediction equation that involves physical activity (PA equation) for cardiovascular (CVD) risk prediction. The developed sex-specific PA equations have shown good performance to predict CVD for a physical active cohort in the Kailuan population that will help to improve the prevention and treatment of CVD.

Open Access

Heterologous vaccination with subunit protein vaccine induces a superior neutralizing capacity against BA.4/5-included SARS-CoV-2 variants than homologous vaccination of mRNA vaccine

  • First Published: 10 March 2023
Heterologous vaccination with subunit protein vaccine induces a superior neutralizing capacity against BA.4/5-included SARS-CoV-2 variants than homologous vaccination of mRNA vaccine

We prepared a Delta full-length spike protein sequence-based mRNA vaccine (Figure A, B) and developed a recombinant trimeric receptor-binding domain (RBD) protein vaccine (Figure C). Later, the mRNA vaccine was injected as the “priming” shot, and the RBD–HR/trimer vaccine was used as a third heterologous booster (Figure D).

Open Access

Interleukin-37 promotes DMBA/TPA skin cancer through SIGIRR-mediated inhibition of glycolysis in CD103+DC cells

  • First Published: 05 March 2023
Interleukin-37 promotes DMBA/TPA skin cancer through SIGIRR-mediated inhibition of glycolysis in CD103+DC cells

In the 7,12-dimethylbenzoanthracene/tetradecylphorbol-13-acetate two-stage skin cancer induction model, interleukin weakened the expression of CD40/CCR7 and the secretion of C-X-C motif chemokine ligand 9/CXCL10 in CD103+DCs through single immunoglobulin interleukin-1-related receptor-activated protein kinase-Akt signal axis, which leads to the suppression the function of CD8+T cells and accelerating the growth of tumor.

Open Access

Increased RTN3 phenocopies nonalcoholic fatty liver disease by inhibiting the AMPK–IDH2 pathway

  • First Published: 14 March 2023
Increased RTN3 phenocopies nonalcoholic fatty liver disease by inhibiting the AMPK–IDH2 pathway

This study suggested that RTN3 can interact with GRP78 on the endoplasmic reticulum. The increased expression of RTN3 can facilitate interactions between RTN3 and GRP78, thereby decreasing the activity of GRP78 in regulating AMPK phosphorylation, which further reduces the expression IDH2, finally resulting in mitochondrial dysfunction, increased reactive oxygen species, and NAFLD.

Open Access

Macrophages facilitate tumor cell PD-L1 expression via an IL-1β-centered loop to attenuate immune checkpoint blockade

  • First Published: 30 March 2023
Macrophages facilitate tumor cell PD-L1 expression via an IL-1β-centered loop to attenuate immune checkpoint blockade

The pro-inflammatory cytokine IL-1β could be triggered and released from macrophages (Mφ) by lactate derived from tumor cells. Interleukin (IL)-1β, in turn, drove an immune inhibitory phenotype on tumor cells, especially on the increase in programmed death-ligand 1, by activating the nuclear factor-κB (NF-κB) signaling pathway. Thus, tumor-released lactate and Mφ-derived IL-1β mediated the crosstalk loop and caused immunosuppression. Moreover, activated NF-κB signaling promoted C-C motif chemokine ligand 2 secretion in tumor cells, leading to further monocyte recruitment and replenishment of the Mφ population, which maintained the malignant feedback loop (Figure 7).

Open Access

Genome-wide association study of tuberculosis in the western Chinese Han and Tibetan population

  • First Published: 29 March 2023
Genome-wide association study of tuberculosis in the western Chinese Han and Tibetan population

This genome-wide association study discovered 14 and 3 independent loci that had potential associations with Tuberculosis (TB) susceptibility in the Chinese Han and Tibetan populations, respectively (p < 1 × 10-5). Further imputation-based meta-analysis on another two East Asia cohorts verified one independent locus harbored by the human leukocyte antigen class II genes that was genome-wide significantly associated with TB (lead single nucleotide polymorphism rs111875628 with a p-value of 2.20 × 10-9).

Open Access

Targeted therapy for cisplatin-resistant lung cancer via aptamer-guided nano-zinc carriers containing USP14 siRNA

  • First Published: 06 April 2023
Targeted therapy for cisplatin-resistant lung cancer via aptamer-guided nano-zinc carriers containing USP14 siRNA

The ligands are combined with nano-zinc hydroxide carriers to guide aptamer and siUSP14 to specifically bind to the surface of DDP-resistant A549/DDP cells. After internalization of the paired aptamer and carriers, intracellular pH changes cause the active release of the siUSP14, followed by inactivation of epidermal growth factor receptor (EGFR)/PI3K/protein kinase B (AKT) signaling pathway, resulting in decreased DDP resistance in A549/DDP cells.

REVIEWS

Open Access

Targeted therapy for pancreatic ductal adenocarcinoma: Mechanisms and clinical study

  • First Published: 19 February 2023
Targeted therapy for pancreatic ductal adenocarcinoma: Mechanisms and clinical study

Pancreatic ductal adenocarcinoma (PDAC) is an aggressive and lethal malignancy with a high rate of recurrence and a dismal 5-year survival rate. A recent shift toward a neoadjuvant approach to treating PDAC has been sparked by the numerous benefits neoadjuvant therapy (NAT) has to offer compared with upfront surgery. This review bridges the molecular understanding of PDAC with its clinical significance, development of novel therapies, and shifting directions in treatment paradigm with an emphasis on the use of NAT.

Open Access

Human microbiomes in cancer development and therapy

  • First Published: 26 February 2023
Human microbiomes in cancer development and therapy

Several microbes, such as Fn, Helicobacter pylori, Fusobacterium, Staphylococcus aureus, Peptostreptococcus anaerobius, and Porphyromonas gingivalis, promote cancer progression. Other microbes, such as Lactobacillus, Bifidobacterium, Clostridium butyricum, Bacillus subtilis, Bifidobacteria, Lactobacoilli, Streptococcus thermophilus, Leptotrichia, Bacteroides thetaiotaomicron, and Faecalibacterium prausnitzii, can inhibit cancer progression. Possible therapeutic approaches for cancer include fecal microbiome transplantation (FMT), probiotics, synbiotics, antibiotics, oncolytic virus, and nanospheres.

Open Access

Biomolecular condensates: Formation mechanisms, biological functions, and therapeutic targets

  • First Published: 28 February 2023
Biomolecular condensates: Formation mechanisms, biological functions, and therapeutic targets

This review highlighted the importance in elucidating the regulation of biomolecular condensates, which is urgently needed for the development of novel therapies. The characteristics, formation mechanism and functions of biomolecular condensates, and the therapeutic targets for diseases are systematically summarized in this review. The available regulatory targets and methods are also discussed in this review. Moreover, this review depicted the significance and challenges of targeting these condensates.

Open Access

Neurological damages in COVID-19 patients: Mechanisms and preventive interventions

  • First Published: 06 April 2023
Neurological damages in COVID-19 patients: Mechanisms and preventive interventions

A schematic overview of severe acute respiratory syndrome coronavirus 2 mediated neurological damages in coronavirus disease 2019 causing cerebral ischemia.

Open Access

Metabolic reprogramming in cancer: Mechanisms and therapeutics

  • First Published: 27 March 2023
Metabolic reprogramming in cancer: Mechanisms and therapeutics

This article presented the metabolic reprogramming of tumor cells to adapt to their microenvironment distinct from normal cells. And this study reviewed the driving factors of metabolic reprogramming, the specific metabolic pathway changes affected, and the related treatment options, in order to provide some suggestions for future tumor treatment.

PERSPECTIVE

Open Access

The rapid rise of SARS-CoV-2 Omicron subvariants with immune evasion properties: XBB.1.5 and BQ.1.1 subvariants

  • First Published: 15 March 2023
The rapid rise of SARS-CoV-2 Omicron subvariants with immune evasion properties: XBB.1.5 and BQ.1.1 subvariants

In the Omicron wave, two emerging subvariants, BQ.1 and XBB, have rapidly become a global public health concern. This diagram illustrates the critical spike mutations in these subvariants, which can lead to immune escape from prior COVID-19 vaccines, boosters, and therapeutic monoclonal antibodies (mAbs). Notably, XBB.1.5, which carries a rare F486P mutation, has demonstrated significantly higher receptor-binding domain (RBD)-ACE2 binding affinity and transmissibility compared to other subvariants, making it the dominant strain in several countries.

HIGHLIGHTS

Open Access

Targeting FMRP: A new window for cancer immunotherapy

  • First Published: 21 March 2023
Targeting FMRP: A new window for cancer immunotherapy

  • FMRP is regulated by Myc and is highly expressed in a variety of human and mouse tumor tissues.
  • FMRP recruits Treg and M2 macrophages to form an immunosuppressive tumor microenvironment by IL3, PROS1 and exosomes.
  • FMRP-KO up-regulates tumor cell secretion of CCL7, which directly activates and recruits CD8+ T cells.
  • FMRP-KO recruits CCR5 and CXCR4 receptor-positive CD8 T cells indirectly by promoting M1 macrophages to secrete CCL5, CXCL9, and CXCL10.

ORIGINAL ARTICLES

Open Access

PRMT5 promotes ovarian cancer growth through enhancing Warburg effect by methylating ENO1

  • First Published: 28 March 2023
PRMT5 promotes ovarian cancer growth through enhancing Warburg effect by methylating ENO1

PRMT5 promotes ovarian cancer growth and Taxol response through enhancing glycolysis pathway, which mediated by regulating the symmetric dimethylation of arginine (SDMA) modification of ENO1.

REVIEWS

Open Access

COVID-19 in early 2023: Structure, replication mechanism, variants of SARS-CoV-2, diagnostic tests, and vaccine & drug development studies

  • First Published: 08 April 2023
COVID-19 in early 2023: Structure, replication mechanism, variants of SARS-CoV-2, diagnostic tests, and vaccine & drug development studies

This paper reviews not only the structure, replication mechanism, and variants of severe acute respiratory syndrome (SARS)-CoV-2 but also exposes all the details of the pandemic, such as how it came out, how it spread, what precautions should be taken, and prevention strategies in every aspect. It also compares the molecular and serological assays used for SARS-CoV-2 diagnosis and lists the COVID-19 vaccines approved by the countries.