Publications by authors named "Changzheng Du"

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  • * The study found that CFAP65 expression was notably higher in colon cancer tissue compared to adjacent healthy tissue, with 61.9% of samples showing high expression.
  • * Low CFAP65 expression was associated with a lower five-year disease-free survival rate, while its expression, along with tumor stage and location, were identified as independent prognostic factors for colon cancer outcomes.
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  • Pancreatic cancer is highly deadly and resistant to chemotherapy, but ferroptosis therapy may offer a potential treatment avenue.
  • The study reveals that CPEB1 influences the stability of NRF2 and promotes resistance to ferroptosis in pancreatic ductal adenocarcinoma by enhancing p62/SQSTM1 levels.
  • Analysis of tissue from 90 PDAC patients indicates that CPEB1 is a significant prognostic factor, with its levels correlating with patient outcomes in therapy.
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In cancer treatment, therapeutic strategies that integrate tumor-specific characteristics (i.e., precision oncology) are widely implemented to provide clinical benefits for cancer patients.

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  • Insufficient pancreatic β-cell mass and reduced insulin expression are crucial factors in the development of diabetes mellitus (DM), with Talin-1 playing a significant role in maintaining β-cell health.
  • Research shows that a lack of Talin-1 leads to decreased β-cell proliferation, resulting in lower insulin production and glucose intolerance in mice.
  • The interaction between Talin-1 and Smurf1 affects the stability of Stat3, linking both genes in a genetic pathway that regulates β-cell function and highlighting Talin-1 as a potential target for diabetes therapies.
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Kindlin-2 is critical for development and homeostasis of key organs, including skeleton, liver, islet, etc., yet its role in modulating angiogenesis is unknown. Here, we report that sufficient KINDLIN-2 is extremely important for NOTCH-mediated physiological angiogenesis.

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Ki67 is a commonly used proliferation marker in pathological diagnosis of tumors; however, its prognostic value in colon cancer is controversial. A total of 312 consecutive patients with stage I-III colon cancer who underwent radical surgery with or without adjuvant chemotherapy were included in the present study. Ki67 expression was assessed using immunohistochemistry and was classified according to 25% intervals.

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  • Premature ovarian insufficiency (POI) affects women under 40, leading to symptoms like amenorrhea and infertility, and has shown potential treatment with exosomes from human pluripotent stem cell-mesenchymal stem cells (hiMSC).
  • In a study using a chemotherapy-induced POI-like mouse model, hiMSC exosomes were tested for their ability to protect ovarian function, with assessments made on hormone levels and follicle count.
  • Results indicated that hiMSC exosomes slowed follicle loss, restored hormone levels, and promoted cell growth while reducing apoptosis in ovarian cells, suggesting a pathway to preserve fertility in female mice.
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Objective: Hyperandrogenemia (HA) is the main pathophysiological change that takes place in polycystic ovary syndrome (PCOS). Cyproterone acetate (CYA) is a drug commonly used to reduce androgen in patients with PCOS. Long-term and continuous exposure to HA can cause ovarian granulosa cells (GCs), pyroptotic death, and follicular dysfunction in PCOS mice.

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  • The study investigates how the Wnt signaling pathway influences early ovarian follicular development using mouse ovaries cultured with inhibitors IWP2 and KN93.
  • Proteomic analysis identified significant changes in protein abundance, with various proteins and pathways linked to ovarian development, specifically highlighting Wnt, Notch, and P53 signaling pathways.
  • The findings enhance understanding of the regulatory mechanisms behind early ovarian development, employing advanced techniques like label-free quantification and liquid chromatography-mass spectrometry for deeper insights.
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Studies demonstrate that long non-coding RNAs (lncRNAs) play vital roles in cancer progression. However, the expression pattern and molecular mechanisms of lncRNA in lung cancer remain largely unclear. Here, we analyzed expression in lung cancer tissues from three RNA-sequencing (RNA-Seq) datasets and validated these results using quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR) in an independent set of lung adenocarcinoma.

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  • Glioblastoma (GBM) is a deadly brain cancer that has a high resistance to treatments, partly due to the presence of cancer stem cells.
  • Recent studies show that a genetic change known as homozygous deletion, common in GBM, enhances the stem-like properties of the tumor cells.
  • Treatment with L-Alanosine (ALA) reduces these stem-like properties by impairing mitochondrial function and also makes GBM cells more sensitive to the standard chemotherapy drug temozolomide (TMZ), suggesting that targeting purine synthesis could improve treatment outcomes with less toxicity.
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Strengthened DNA repair pathways in tumor cells contribute to the development of resistance to DNA-damaging agents. Consequently, targeting proteins in these pathways is a promising strategy for tumor chemosensitization. Here, we show that the expression of a subset of Fanconi anemia (FA) genes is attenuated in glioblastoma tumor cells deficient in methylthioadenosine phosphorylase (), a common genetic alteration in a variety of cancers.

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Late-stage cancer metastasis remains incurable in the clinic and is the major cause death in patients. Circulating tumor cells (CTCs) are thought to be metastatic precursors shed from the primary tumor or metastatic deposits and circulate in the blood. The molecular network regulating CTC survival, extravasation, and colonization in distant metastatic sites is poorly defined, largely due to challenges in isolating rare CTCs.

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Purpose: We compared the long-term outcome of the watch and wait (WW) strategy and surgery in patients with locally advanced rectal cancer.

Patients And Methods: This prospective cohort study included 84 patients who achieved clinical complete response (cCR) after neoadjuvant chemoradiotherapy (NCRT). They were divided into the WW group (n = 58) and surgery group (SG, n = 26).

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Background: and have been well studied for their roles in tumorigeneis, plus cancer diagnosis and treatment, but their prognostic value in colon cancer, especially for early-stage cancer, has not been fully illuminated. This study examined the expression levels of BRCA1 and BRCA2 proteins in sporadic colon cancer cases and investigated their value in prognosis.

Methods: The expression levels of and in 275 colon cancer patients who underwent radical surgeries were assayed by immunohistochemical staining in dissected tumor samples.

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Diffuse intrinsic pontine glioma (DIPG) is an invariably fatal brain tumor occurring predominantly in children. Up to 90% of pediatric DIPGs harbor a somatic heterozygous mutation resulting in the replacement of lysine 27 with methionine (K27M) in genes encoding histone H3.3 (H3F3A, 65%) or H3.

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H2AX safeguards genomic stability in a dose-dependent manner; however, mechanisms governing its proteostasis are poorly understood. Here, we identify a PRMT5-RNF168-SMURF2 cascade that regulates H2AX proteostasis. We show that PRMT5 sustains the expression of RNF168, an E3 ubiquitin ligase essential for DNA damage response (DDR).

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  • Anastomotic leakage is a serious complication in rectal cancer surgeries, and this study aimed to develop a predictive method to evaluate individual risks of leakage for patients undergoing these procedures.
  • The study included 163 rectal cancer patients who underwent surgeries with Doppler sonographic measurements, revealing that specific hemodynamic parameters (like peak systolic velocity) correlated significantly with the risk of leakage.
  • Results showed that patients with severely reduced blood flow had a higher incidence of leakage, especially those with low rectal cancer or who received neoadjuvant treatment, suggesting that blood supply assessment could be a crucial predictor in surgical outcomes.
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  • - The study investigated the long-term outcomes of organ preservation in mid-low rectal cancer patients who achieved clinical complete remission (cCR) or near-cCR after undergoing neoadjuvant chemoradiotherapy (NCRT), focusing on local excision or a "watch and wait" approach.
  • - Data from 62 patients were analyzed, showing a 3-year non-regrowth disease-free survival (NR-DFS) and tumor-specific survival (CSS), with notable results such as a 24.2% local regrowth rate and an 8.1% overall metastasis rate during follow-up.
  • - The findings indicated high rates of organ preservation (85.5%) and sphincter preservation (95.2
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Objective: Lysine-specific demethylase 2A (KDM2A), a specific H3K36me1/2 demethylase, has been reported to be closely associated with several types of cancer. In this study, we aimed to investigate the expression and function of KDM2A in colorectal adenocarcinoma.

Methods: A total of 215 colorectal adenocarcinoma specimens were collected, and then subjected to immunohistochemistry assay to evaluate the expression levels of KDM2A, cyclin D1 and other proteins in colorectal adenocarcinoma tissues.

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Laminin γ2 (LAMC2) has been reported to be involved in the development and progression of a variety of tumors. However, its function in human colorectal cancer is unclear. Our study aimed to investigate the role of laminin γ2 in colorectal cancer.

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  • High-risk patients with stage II colon cancer may benefit from chemotherapy, but identifying them is challenging; this study evaluates tumor budding and preoperative CEA levels as predictive biomarkers for disease progression.
  • A total of 134 patients who had surgery for stage II colon cancer were analyzed, focusing on how CEA and tumor budding grades correlate with 5-year disease-free survival (DFS).
  • Results showed that combining CEA and tumor budding (the CEA-budding panel) had a higher accuracy for predicting disease progression (82.1%) compared to using CEA (70.9%) or tumor budding alone (72.4%).
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  • 5-fluorouracil (5-FU) has therapeutic effects in colorectal cancer (CRC), but its exact mechanisms, particularly regarding histone acetylation, are not fully understood.
  • Research shows that 5-FU leads to global de-acetylation of histones in CRC cell lines by reducing the binding and promoting the degradation of histone acetyltransferases p300 and CBP.
  • Low levels of p300/CBP in CRC tissues are linked to poorer responses to 5-FU chemotherapy, suggesting that these proteins could serve as important indicators for predicting the effectiveness of this treatment.
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  • The study highlights the need for colorectal cancer screening and prevention in China, as population-based data is scarce, particularly in Beijing.
  • From 1998 to 2012, the annual incidence rate of colorectal cancer in Beijing rose significantly, particularly among men over 75 in urban areas, while still being relatively lower compared to other Chinese cities.
  • Although Beijing's colorectal cancer rates are increasing, there's a notable difference in trends, with rates declining in major cities like New York, indicating a need for improved prevention strategies in Beijing.
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Objective: To investigate the safety and efficacy of organ preservation surgery or "watch and wait" strategy for rectal cancer patients who are evaluated as clinical complete response(cCR) or near-cCR following neoadjuvant chemoradiotherapy (nCRT).

Method: From March 2011 to June 2016, 35 patients with mid-low rectal cancers who were diagnosed as cCR or near-cCR following nCRT underwent organ preservation surgery with local excision or surveillance following "watch and wait" strategy in the Peking University Cancer Hospital. All the patients received re-evaluation and re-staging 6-12 weeks after the completion of nCRT, according to Habr-Gama and MSKCC criteria for the diagnosis of cCR or near-cCR.

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