1.Aspirin-induced acetylation of APE1/Ref-1 enhances RAGE binding and promotes apoptosis in ovarian cancer cells
Hao JIN ; Yu Ran LEE ; Sungmin KIM ; Eun-Ok LEE ; Hee Kyoung JOO ; Heon Jong YOO ; Cuk-Seong KIM ; Byeong Hwa JEON
The Korean Journal of Physiology and Pharmacology 2025;29(3):293-305
The role of acetylated apurinic/apyrimidinic endonuclease 1/redox factor 1 (APE1/Ref-1) in ovarian cancer remains poorly understood. Therefore, this study aimed to investigate the combined effect of recombinant human APE1/Ref-1 (rhAPE1/Ref-1) and aspirin (ASA) on two ovarian cancer cells, PEO-14, and CAOV3.The viability and apoptosis of ovarian cancer cells treated with rhAPE1/Ref-1 or ASA were assessed. Our results demonstrated that ASA induced rhAPE1/Ref-1 acetylation and widespread hyperacetylation in PEO-14 cells. Additionally, co-treatment with rhAPE1/Ref-1 and ASA substantially reduced cell viability and induced PEO-14 cell apoptosis, not CAOV3, in a dose-dependent manner. ASA increased the expression and membrane localization of the receptor for advanced glycation endproducts (RAGEs). Acetylated APE1/Ref-1 showed enhanced binding to RAGEs. In contrast, RAGE knockdown reduced cell death and poly(ADP-ribose) polymerase cleavage caused by rhAPE1/Ref-1 and ASA combination treatment, highlighting the importance of the APE1/Ref-1-RAGE interaction in triggering apoptosis. Moreover, combination treatment with rhAPE1/Ref-1 and ASA effectively induced apoptosis in 3D spheroid cultures of PEO-14 cells, a model that better mimics the tumor microenvironment. These results demonstrate that acetylated APE1/Ref-1 and its interaction with RAGE is a potential therapeutic target for ovarian cancer. Thus, the combination of ASA and APE1/Ref-1 may offer a promising new strategy for inducing cancer cell death.
2.Aspirin-induced acetylation of APE1/Ref-1 enhances RAGE binding and promotes apoptosis in ovarian cancer cells
Hao JIN ; Yu Ran LEE ; Sungmin KIM ; Eun-Ok LEE ; Hee Kyoung JOO ; Heon Jong YOO ; Cuk-Seong KIM ; Byeong Hwa JEON
The Korean Journal of Physiology and Pharmacology 2025;29(3):293-305
The role of acetylated apurinic/apyrimidinic endonuclease 1/redox factor 1 (APE1/Ref-1) in ovarian cancer remains poorly understood. Therefore, this study aimed to investigate the combined effect of recombinant human APE1/Ref-1 (rhAPE1/Ref-1) and aspirin (ASA) on two ovarian cancer cells, PEO-14, and CAOV3.The viability and apoptosis of ovarian cancer cells treated with rhAPE1/Ref-1 or ASA were assessed. Our results demonstrated that ASA induced rhAPE1/Ref-1 acetylation and widespread hyperacetylation in PEO-14 cells. Additionally, co-treatment with rhAPE1/Ref-1 and ASA substantially reduced cell viability and induced PEO-14 cell apoptosis, not CAOV3, in a dose-dependent manner. ASA increased the expression and membrane localization of the receptor for advanced glycation endproducts (RAGEs). Acetylated APE1/Ref-1 showed enhanced binding to RAGEs. In contrast, RAGE knockdown reduced cell death and poly(ADP-ribose) polymerase cleavage caused by rhAPE1/Ref-1 and ASA combination treatment, highlighting the importance of the APE1/Ref-1-RAGE interaction in triggering apoptosis. Moreover, combination treatment with rhAPE1/Ref-1 and ASA effectively induced apoptosis in 3D spheroid cultures of PEO-14 cells, a model that better mimics the tumor microenvironment. These results demonstrate that acetylated APE1/Ref-1 and its interaction with RAGE is a potential therapeutic target for ovarian cancer. Thus, the combination of ASA and APE1/Ref-1 may offer a promising new strategy for inducing cancer cell death.
3.Aspirin-induced acetylation of APE1/Ref-1 enhances RAGE binding and promotes apoptosis in ovarian cancer cells
Hao JIN ; Yu Ran LEE ; Sungmin KIM ; Eun-Ok LEE ; Hee Kyoung JOO ; Heon Jong YOO ; Cuk-Seong KIM ; Byeong Hwa JEON
The Korean Journal of Physiology and Pharmacology 2025;29(3):293-305
The role of acetylated apurinic/apyrimidinic endonuclease 1/redox factor 1 (APE1/Ref-1) in ovarian cancer remains poorly understood. Therefore, this study aimed to investigate the combined effect of recombinant human APE1/Ref-1 (rhAPE1/Ref-1) and aspirin (ASA) on two ovarian cancer cells, PEO-14, and CAOV3.The viability and apoptosis of ovarian cancer cells treated with rhAPE1/Ref-1 or ASA were assessed. Our results demonstrated that ASA induced rhAPE1/Ref-1 acetylation and widespread hyperacetylation in PEO-14 cells. Additionally, co-treatment with rhAPE1/Ref-1 and ASA substantially reduced cell viability and induced PEO-14 cell apoptosis, not CAOV3, in a dose-dependent manner. ASA increased the expression and membrane localization of the receptor for advanced glycation endproducts (RAGEs). Acetylated APE1/Ref-1 showed enhanced binding to RAGEs. In contrast, RAGE knockdown reduced cell death and poly(ADP-ribose) polymerase cleavage caused by rhAPE1/Ref-1 and ASA combination treatment, highlighting the importance of the APE1/Ref-1-RAGE interaction in triggering apoptosis. Moreover, combination treatment with rhAPE1/Ref-1 and ASA effectively induced apoptosis in 3D spheroid cultures of PEO-14 cells, a model that better mimics the tumor microenvironment. These results demonstrate that acetylated APE1/Ref-1 and its interaction with RAGE is a potential therapeutic target for ovarian cancer. Thus, the combination of ASA and APE1/Ref-1 may offer a promising new strategy for inducing cancer cell death.
4.Patient-Reported Outcome Measures of Staged Direct Anterior Approach and Direct Lateral Approach for Total Hip Arthroplasty Performed on the Same Patient
Byeong Yeol CHOI ; Woo Chull CHUNG ; Se Jin KIM ; Eun Ho CHOI
The Journal of the Korean Orthopaedic Association 2025;60(1):22-29
Purpose:
Total hip arthroplasty (THA) is performed using various approaches, including posterior, lateral, and direct anterior approaches.The most beneficial method is controversial. Each approach has its advantages and disadvantages. This study compared patient satisfaction after bilateral THA using the direct anterior and lateral approaches on the same patient, considering the advantages and disadvantages of each approach.
Materials and Methods:
This study examined 30 patients who underwent bilateral THA: two with femoral neck fractures, 18 with osteonecrosis of the femoral head, six with borderline dysplasia-induced hip osteoarthritis, and four with degenerative hip osteoarthritis.Without distinguishing between the left and right sides, THA was performed randomly using the direct anterior approach on one side and the lateral approach on the other. The results of THA were compared using different approaches on the same patient, and patient satisfaction was evaluated.
Results:
Surgery using the direct anterior approach for THA showed favorable results in terms of the initial postoperative pain compared to surgery using the lateral approach. On the other hand, there was no significant difference observed after one month post-surgery. Among the participants, three preferred the direct anterior approach; four preferred the lateral approach, and 23 reported no preference.
Conclusion
In THA, the direct anterior approach may offer advantages in terms of initial postoperative pain and rehabilitation compared to the lateral approach. Nevertheless, the pain and joint function one month after surgery were similar between the two approaches.Therefore, the choice of approach should be determined by the surgeon's preference or experience, as both methods appear rational.
5.Patient-Reported Outcome Measures of Staged Direct Anterior Approach and Direct Lateral Approach for Total Hip Arthroplasty Performed on the Same Patient
Byeong Yeol CHOI ; Woo Chull CHUNG ; Se Jin KIM ; Eun Ho CHOI
The Journal of the Korean Orthopaedic Association 2025;60(1):22-29
Purpose:
Total hip arthroplasty (THA) is performed using various approaches, including posterior, lateral, and direct anterior approaches.The most beneficial method is controversial. Each approach has its advantages and disadvantages. This study compared patient satisfaction after bilateral THA using the direct anterior and lateral approaches on the same patient, considering the advantages and disadvantages of each approach.
Materials and Methods:
This study examined 30 patients who underwent bilateral THA: two with femoral neck fractures, 18 with osteonecrosis of the femoral head, six with borderline dysplasia-induced hip osteoarthritis, and four with degenerative hip osteoarthritis.Without distinguishing between the left and right sides, THA was performed randomly using the direct anterior approach on one side and the lateral approach on the other. The results of THA were compared using different approaches on the same patient, and patient satisfaction was evaluated.
Results:
Surgery using the direct anterior approach for THA showed favorable results in terms of the initial postoperative pain compared to surgery using the lateral approach. On the other hand, there was no significant difference observed after one month post-surgery. Among the participants, three preferred the direct anterior approach; four preferred the lateral approach, and 23 reported no preference.
Conclusion
In THA, the direct anterior approach may offer advantages in terms of initial postoperative pain and rehabilitation compared to the lateral approach. Nevertheless, the pain and joint function one month after surgery were similar between the two approaches.Therefore, the choice of approach should be determined by the surgeon's preference or experience, as both methods appear rational.
6.Aspirin-induced acetylation of APE1/Ref-1 enhances RAGE binding and promotes apoptosis in ovarian cancer cells
Hao JIN ; Yu Ran LEE ; Sungmin KIM ; Eun-Ok LEE ; Hee Kyoung JOO ; Heon Jong YOO ; Cuk-Seong KIM ; Byeong Hwa JEON
The Korean Journal of Physiology and Pharmacology 2025;29(3):293-305
The role of acetylated apurinic/apyrimidinic endonuclease 1/redox factor 1 (APE1/Ref-1) in ovarian cancer remains poorly understood. Therefore, this study aimed to investigate the combined effect of recombinant human APE1/Ref-1 (rhAPE1/Ref-1) and aspirin (ASA) on two ovarian cancer cells, PEO-14, and CAOV3.The viability and apoptosis of ovarian cancer cells treated with rhAPE1/Ref-1 or ASA were assessed. Our results demonstrated that ASA induced rhAPE1/Ref-1 acetylation and widespread hyperacetylation in PEO-14 cells. Additionally, co-treatment with rhAPE1/Ref-1 and ASA substantially reduced cell viability and induced PEO-14 cell apoptosis, not CAOV3, in a dose-dependent manner. ASA increased the expression and membrane localization of the receptor for advanced glycation endproducts (RAGEs). Acetylated APE1/Ref-1 showed enhanced binding to RAGEs. In contrast, RAGE knockdown reduced cell death and poly(ADP-ribose) polymerase cleavage caused by rhAPE1/Ref-1 and ASA combination treatment, highlighting the importance of the APE1/Ref-1-RAGE interaction in triggering apoptosis. Moreover, combination treatment with rhAPE1/Ref-1 and ASA effectively induced apoptosis in 3D spheroid cultures of PEO-14 cells, a model that better mimics the tumor microenvironment. These results demonstrate that acetylated APE1/Ref-1 and its interaction with RAGE is a potential therapeutic target for ovarian cancer. Thus, the combination of ASA and APE1/Ref-1 may offer a promising new strategy for inducing cancer cell death.
7.Patient-Reported Outcome Measures of Staged Direct Anterior Approach and Direct Lateral Approach for Total Hip Arthroplasty Performed on the Same Patient
Byeong Yeol CHOI ; Woo Chull CHUNG ; Se Jin KIM ; Eun Ho CHOI
The Journal of the Korean Orthopaedic Association 2025;60(1):22-29
Purpose:
Total hip arthroplasty (THA) is performed using various approaches, including posterior, lateral, and direct anterior approaches.The most beneficial method is controversial. Each approach has its advantages and disadvantages. This study compared patient satisfaction after bilateral THA using the direct anterior and lateral approaches on the same patient, considering the advantages and disadvantages of each approach.
Materials and Methods:
This study examined 30 patients who underwent bilateral THA: two with femoral neck fractures, 18 with osteonecrosis of the femoral head, six with borderline dysplasia-induced hip osteoarthritis, and four with degenerative hip osteoarthritis.Without distinguishing between the left and right sides, THA was performed randomly using the direct anterior approach on one side and the lateral approach on the other. The results of THA were compared using different approaches on the same patient, and patient satisfaction was evaluated.
Results:
Surgery using the direct anterior approach for THA showed favorable results in terms of the initial postoperative pain compared to surgery using the lateral approach. On the other hand, there was no significant difference observed after one month post-surgery. Among the participants, three preferred the direct anterior approach; four preferred the lateral approach, and 23 reported no preference.
Conclusion
In THA, the direct anterior approach may offer advantages in terms of initial postoperative pain and rehabilitation compared to the lateral approach. Nevertheless, the pain and joint function one month after surgery were similar between the two approaches.Therefore, the choice of approach should be determined by the surgeon's preference or experience, as both methods appear rational.
8.Aspirin-induced acetylation of APE1/Ref-1 enhances RAGE binding and promotes apoptosis in ovarian cancer cells
Hao JIN ; Yu Ran LEE ; Sungmin KIM ; Eun-Ok LEE ; Hee Kyoung JOO ; Heon Jong YOO ; Cuk-Seong KIM ; Byeong Hwa JEON
The Korean Journal of Physiology and Pharmacology 2025;29(3):293-305
The role of acetylated apurinic/apyrimidinic endonuclease 1/redox factor 1 (APE1/Ref-1) in ovarian cancer remains poorly understood. Therefore, this study aimed to investigate the combined effect of recombinant human APE1/Ref-1 (rhAPE1/Ref-1) and aspirin (ASA) on two ovarian cancer cells, PEO-14, and CAOV3.The viability and apoptosis of ovarian cancer cells treated with rhAPE1/Ref-1 or ASA were assessed. Our results demonstrated that ASA induced rhAPE1/Ref-1 acetylation and widespread hyperacetylation in PEO-14 cells. Additionally, co-treatment with rhAPE1/Ref-1 and ASA substantially reduced cell viability and induced PEO-14 cell apoptosis, not CAOV3, in a dose-dependent manner. ASA increased the expression and membrane localization of the receptor for advanced glycation endproducts (RAGEs). Acetylated APE1/Ref-1 showed enhanced binding to RAGEs. In contrast, RAGE knockdown reduced cell death and poly(ADP-ribose) polymerase cleavage caused by rhAPE1/Ref-1 and ASA combination treatment, highlighting the importance of the APE1/Ref-1-RAGE interaction in triggering apoptosis. Moreover, combination treatment with rhAPE1/Ref-1 and ASA effectively induced apoptosis in 3D spheroid cultures of PEO-14 cells, a model that better mimics the tumor microenvironment. These results demonstrate that acetylated APE1/Ref-1 and its interaction with RAGE is a potential therapeutic target for ovarian cancer. Thus, the combination of ASA and APE1/Ref-1 may offer a promising new strategy for inducing cancer cell death.
9.Antigenicity evaluation of lac color and exploratory study for identifying potential biomarkers of anaphylaxis
Hyun‑Jin LIM ; Kang Min HAN ; Seung‑Hyun KIM ; Soo‑Kyung RYU ; Ji‑Ran YOU ; Jung‑Hee YOON ; Euna KWON ; Ji‑Eun KIM ; Byeong‑Cheol KANG
Laboratory Animal Research 2024;40(4):461-475
Background:
Lac color, a natural red dye derived from the larvae of laccifer lacca kerr, is one of the most commonly used substances in food. To date, no studies have reported on the antigenicity of lac color and the other biomarkers that can determine anaphylactic reactions. To address this, we evaluated the antigenicity of lac color through active systemic anaphylaxis (ASA) in addition to identifying potential biomarkers performing exploratory studies. For ASA test, Guinea pigs (n = 5) were sensitized with 0(negative control), 4 mg/kg of lac color, 4 mg/kg of lac color + FCA, and 5 mg/kg of ovalbumin + FCA (positive control) 3 times a week for three weeks. Fourteen days after the last sensi‑ tization, animals were challenged intravenously weekly for two weeks. Hematological and histopathological analyses were performed and compared to control groups.
Results:
In the ASA test, all lac color groups showed mild symptoms such as nose rubbing, urination, and evacuation, which are insufficient indicators of anaphylaxis. Exploratory studies identified several biomarkers: decreased platelet count, and increased basophil count; distention in the lung, and redness on the inner wall of trachea; mononuclear inflammatory cell infiltration (MICI) in the ear, and heart hemorrhage. When these biomarkers were applied to the ASA test of lac color, in comparison to the negative control group, the positive control group (ovalbumin + FCA) showed a significant over 60-fold reduction in platelet count and nearly threefold higher basophil count compared to other groups. Furthermore, only positive control group exhibited full lung distention and severe redness on the inner wall of the trachea. Mononuclear inflammatory cell infiltration (MICI) in the ear was about three times higher, and heart hemorrhage was only present in the positive control group compared to others. None of the lac color groups were different from the negative control group (p > 0.05), whereas the positive control group was significantly different (p < 0.05).
Conclusions
Our study concludes that lac color, at the tested concentrations, does not induce antigenicity in the guinea pig model, providing valuable safety data. Furthermore, the biomarkers identified in this study offer a supportive approach to evaluating the immunogenicity of substances in future research.
10.Pectolinarin Against Amyloid-beta-induced Neuroinflammation and Apoptosis In vitro
Mei Tong HE ; Byeong Wook NOH ; Hyun Young KIM ; Ah Young LEE ; Eun Ju CHO
Natural Product Sciences 2024;30(4):254-261
An excess of amyloid beta (Aβ) led to a rise in ROS production, which in turn caused inflammatory reactions and mitochondrial dysfunction, both of which accelerate the progression of Alzheimer’s disease (AD).Natural flavonoids are proposed as possible agents for neurodegeneration. Pectolinarin is an important flavone mainly found in Cirsium species. In this study, we explored the potential neuroprotective effect of pectolinarin in Aβ25-35 -induced SH-SY5Y cells. The result demonstrated that pectolinarin enhanced cell viability. Pectolinarin treatment inhibited Aβ25-35 -induced ROS generation. Pectolinarin also suppressed NO generation by inhibiting the translocation of NF-ĸB and downregulating protein expression of iNOS and COX-2. Moreover, the expression of Bcl-2 increased while BAX protein decreased when the cells were exposed to pectolinarin, resulting in a decrease in the BAX/Bcl-2 ratio. Pectolinarin treatment also increased BDNF and its receptor TrkB protein expression. In conclusion, pectolinarin neuroprotected Aβ25-35 -induced inflammation and apoptosis. These findings suggest that pectolinarin may be a promising neuroprotective functional food in the protection of the neurodegenerative diseases, including AD.

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