karuna singh

Dr. karuna singh


Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 March 2024 in Non-coding RNA Research
Verified
Journal Article
Open access
Vivek UttamVivek Uttam
Vivek Uttam
MRManjit Kaur Rana
Manjit Kaur Rana
USUttam Sharma
Uttam Sharma
KSkaruna singh
karuna singh
AJAklank Jain
Aklank Jain
The widespread public health problem of esophageal squamous cell carcinoma (ESCC) is the cause of an increasing number of deaths each year due to delayed diagnosis. Therefore, we require specific and sensitive new biomarkers to manage ESCC better. The detection of diseases, such as cancer, can now be achieved through non-invasive circulating blood-based methods. Blood-based circulating non-coding RNAs, such as miRNA and lncRNA, have been extensively used as valuable markers for lung, esophageal, and breast cancer diagnostic purposes, as quoted in our previous research. Herein, we investigated the role of novel long non-coding RNA EWSAT1 as a blood-based liquid biopsy biomarker for the ESCC. Our findings indicate that EWSAT1 lncRNA has an increased tumor suppressive activity in ESCC, as it reduces by ∼2.59-fold relative to healthy controls. Moreover, we established that EWSAT1 expression can significantly distinguish between clinicopathological characteristics, including age, gender, and lifestyle choices such as smoking, alcohol consumption, and drinking hot beverages among patients with ESCC and healthy individuals. In addition, the expression levels of lncRNA EWSAT1 could distinguish between individuals with more advanced ESCC cancer and those without it, as illustrated by the ROC curve (AUC = 0.7174, 95 % confidence intervals = 0.5901 to 0.8448, p-value = 0.001). Our in-silico prediction methods demonstrated that miR-873-5p is the direct target of EWSAT1, which competes with the tumor suppressor candidate 3 (TUSC3) and EGL-9 family hypoxia-inducible factor 3 (EGLN3) mRNAs through a sponging mechanism, creating the EWSAT1/miR-873-5p/mRNA axis. We have analyzed the role of EWSAT1 in various cellular processes and signaling pathways, including mTOR, Wnt, and MAPK signaling pathways. Circulating EWSAT1 can be used as a liquid biopsy marker for diagnosis of ESCC and has the potential to serve as an effective therapeutic biomarker, according to this pilot study.

Verified
Journal Article
Open access
PDF file
USUttam Sharma
Uttam Sharma
TBTushar Singh Barwal
Tushar Singh Barwal
VAVarnali Acharya
Varnali Acharya
KSkaruna singh
karuna singh
MRManjit Kaur Rana
Manjit Kaur Rana
AJAklank Jain
Aklank Jain
Intrinsic resistance to ionizing radiation is the major impediment in the treatment and clinical management of esophageal squamous cell carcinoma (ESCC), leading to tumor relapse and poor prognosis. Although several biological and molecular mechanisms are responsible for resistance to radiotherapy in ESCC, the molecule(s) involved in predicting radiotherapy response and prognosis are still lacking, thus requiring a detailed understanding. Recent studies have demonstrated an imperative correlation amongst several long non-coding RNAs and their involvement in complex cellular networks like DNA damage and repair, cell cycle, apoptosis, proliferation, and epithelial-mesenchymal transition. Additionally, accumulating evidence has suggested abnormal expression of lncRNAs in malignant tumor cells before and after radiotherapy effects in tumor cells’ sensitivity. Thus, lncRNAs indeed represent unique molecules that can influence tumor cell susceptibility for various clinical interventions. On this note, herein, we have summarized the current status of lncRNAs in augmenting resistance/sensitivity in ESCC against radiotherapy. In addition, we have also discussed various strategies to increase the radiosensitivity in ESCC cells under clinical settings.

21 June 2021 in Cureus
Verified
Journal Article
Open access
MRManjit Kaur Rana
Manjit Kaur Rana
TBTushar Singh Barwal
Tushar Singh Barwal
USUttam Sharma
Uttam Sharma
RBRichika Bansal
Richika Bansal
KSkaruna singh
karuna singh
UKUtkarshni Khera
Utkarshni Khera
Cancer incidence across the geographical area is mercurial and factors like dietary habits, environment, social structure, genetics govern relative incidence. Malwa region of Punjab is one such geographical area of India speculated to have a higher incidence of cancer. The current analysis was done to assess the occurrence of cancer in the region and to analyze the trends and types of carcinoma with age, gender, site, and histopathological type, and to compare with the trends mentioned in the literature. A retrospective analysis was done to collect and collate 2088 cancer patients' pathological records for three years at a tertiary treatment center. The collated data was digitized and used to create tables and histograms. Of the 2088 cancer cases, the leading cancer site was breast (24.7%) in females, followed by cancer of female genetic tract (18.9%), whereas in males, the most common site involved was head and neck (17.5%) followed by esophagus (10.3%). The leading cancer type for males was squamous cell carcinoma and for females was infiltrating ductal cell carcinoma. Breast carcinoma was most commonly seen cancer (40.5%) followed by female genital tract carcinoma and esophageal carcinoma in female patients. Whereas in males, head and neck carcinoma was most commonly identified (37.5%) followed by the gastrointestinal tract and esophageal carcinoma. This higher incidence may be attributed to better medical facilities, cancer awareness, and novel government schemes. Based on our comprehensive analysis, we conclude that there was a change in trends of all types of carcinomas in males and females except breast carcinoma, which was seen as the most common carcinoma in female patients. Our findings suggest and support the strong implementation of cancer awareness programs and epidemiological studies to know the changing trends of risk factors in the region.

30 September 2015 in Journal of Case Reports
Verified
Journal Article
Open access
PDF file
KSkaruna singh
karuna singh
OSOmar Sadat Shah
Omar Sadat Shah
ADAnshuman Dalbera
Anshuman Dalbera
VDV. Sirisha Devi
V. Sirisha Devi
DGDhananjay Ghosh
Dhananjay Ghosh
Low grade chondrosarcoma is considered to have less aggressive clinical course and is generally managed by excision. We hereby report a diagnosed patient with low grade chondrosarcoma of right proximal femur who presented for palliative radiotherapy. PET-CT scan of whole body showed vertebral metastasis. She later developed occult blood in stool for which she was evaluated with endoscopy which revealed pedunculated ulcerative lesion in stomach. She also had colonic mass lesion and paratracheal lymph nodal enlargement. This report is to make ourselves aware the possible metastatic potential of low grade chondrosarcoma.